A boy falls ill with a new virus that nobody has described before (we'll call it Virus A). He contracted this virus from rat droppings near his home. After he falls ill, 80% of the members of his village become sick with the disease caused by Virus A. However, public health officials are able to confine the disease to one particular geographic region and to eliminate it completely after several months. Which of the following is true of Virus A? a) It caused a pandemic. b) It caused an epidemic/outbreak. c) It is a re-emerging virus. d) It is an emerging virus. e) It is a deliberately emerging virus. f) It is a zoonotic virus.
Answers
Answer: the following options are true of the Virus A:
--> b (It caused an epidemic/outbreak)
--> d (It is an emerging virus.)
--> f (It is a zoonotic virus.)
Explanation:
Virus is a type of microorganism that contains a genetic material and is surrounded by a protein coat called capsid.
Virus such as virus A from the question is an EMERGING VIRUS because it just newly infected the boy who is it's first host causing a disease that is unknown. An emerging virus has the ability of increasing in incidence which happened with Virus A although is was put under control through public health activities.
Virus A is said to cause an EPIDEMIC because it occured in an unusually high number of individuals in a community at the same time. From the question after the boy fell sick,80% of the members of his village(one particular geographic region) became sick with the disease caused by Virus A.
A large number of infectious diseases that occur in humans also occur in animals. A disease that occurs primarily in animals (example, rats) but is occasionally transmitted to humans, either through direct blood contact, faecal or urine of these infected animals, is called Zoonosis. Therefore Virus A is a zoonotic virus because the boy contracted this virus from rat droppings near his home.
Related Questions
What is a secondary crime scene?
Answers
Answer:hope this helps
SECONDARY CRIME SCENES. A location related to the crime but not where the actual crime took place. Sometimes this is the only scene that investigator's know about. There can be MANY secondary crime scenes.
Explanation:
Conjugation requires membrane-membrane contact. Which of the following medically relevant bacterial species is/are likely incapable of conjugating?B. Bacillus anthracisC. Staphylococcus aureus
Answers
Mycobacterium tuberculosis is medically relevant bacterial species is/are likely incapable of conjugating. Option D is correct choice.
Conjugation is a process of horizontal gene transfer in bacteria, which involves the transfer of genetic material (such as plasmids) between cells via direct cell-to-cell contact. This requires physical contact between the donor and recipient cells, which is typically facilitated by the presence of pili or fimbriae on the bacterial surface.
Mycobacterium tuberculosis is a slow-growing, gram-positive bacterium that is known to be difficult to culture and manipulate in the laboratory. It is not typically associated with conjugation, and its genetics and horizontal gene transfer mechanisms are not well understood. Hence, option D is correct.
To know more about bacillus, here
brainly.com/question/8869839
#SPJ4
--The complete question is, Conjugation requires membrane-membrane contact. Which of the following medically relevant bacterial species is/are likely incapable of conjugating?
Choose one or more:
A. Staphylococcus aureus
B. Escherichia coli
C. Bacillus anthracis
D. Mycobacterium tuberculosis--
The geosphere is the earth itself. It includes the non-living ______ , ________ , and ________ that make up the ________ on earth .
Answers
The geosphere is the actual earth. It includes the inert substances such as rock, mineral, and soil that make up the earth's surface.
What is contained within the geosphere of the Earth?All the rocks that make up Earth are included in the geosphere, including the partially molten rock beneath the crust, the enormous, towering mountains, and the sand grains on the seashore. A global ecosystem that includes all life on Earth, the biosphere is supported by both the geosphere and the hydrosphere.
Is the geosphere alive or dead?The entire crust of the Earth is the geosphere. The Greek prefix geo-, which meaning "earth," is the root of the word geosphere. Due to the absence of any living things, the geosphere is regarded as abiotic.
To know more about geosphere visit :-
https://brainly.com/question/5137630
#SPJ1
select all the body and cellular processes that require cell division (mitosis or meiosis) to function- growth and development- reproduction- replace dead cells
Answers
Both meiosis or mitosis result in cell division to produce new cells. So, for sexually reproducing creatures to continue to exist, these two processes are necessary. The non-sex cells reproduce during mitosis.
Are mitosis and meiosis crucial for development and repair?The form of cell division essential for body growth and repair is called mitosis. Cell division known as meiosis is what creates gametes, or sex cells, for the body. All somatic cells, or cells other than gametes, undergo mitosis throughout the body.
What is the name of the cell division process known as mitosis?Chromosome alignment and segregation are processes that go through distinct phases. After mitosis, a process known as cytokinesis divides the entire cell in half (Figure 1). Walther Flemming's illustration of chromosomes in mitosis, made around 1880, is shown in Figure 1.
To know more about necessary visit:
https://brainly.com/question/30598070
#SPJ1
1. Stores material within the cell
2. Closely stacked, flattened sacs that trap energy from sunlight
3. Where proteins are made
4. Transports materials within the cell
5. The region inside the cell except for the nucleus
6. The organelle that manages or controls all the cell functions in a eukaryotic cell
7. Contains chlorophyll, a green pigment that gives plants their green color
8. Digests excess or worn-out cell parts, food particles and invading viruses or bacteria
9. Small bumps located on portions of the endoplasmic reticulum
10. Provides temporary storage of food, enzymes and waste products
11. The firm, protective structure that gives the cell its shape in plants
12. Produces energy for the cell
13. Packages proteins and other materials for transport out of the cell
14. Everything inside the cell including the nucleus
Answers
Answer:
what is this how do some one to understand what write is no instructions there how can I answer please give us some instructions
Fats, sugars, and proteins are important food molecules. Which statement about these types of molecules is true?
Answers
The statement "There are all macronutrients" is true about these types of molecules
What are macronutrients?Macronutrients, essential components required by the body in substantial quantities, furnish energy, foster tissue growth and mending, and govern physiological processes. The trio of primary macronutrients encompasses carbohydrates, protein, and fat.
The precise magnitude of macronutrient requisites relies on factors such as age, gender, physical exertion, and overall well-being of an individual.
Learn about macronutrients here https://brainly.com/question/28837185
#SPJ1
Complete question:
Fats, sugars, and proteins are important food molecules. Which statement about these types of molecules is true?
a. There are all macronutrients
b. Sugar makes one fat
c. Sugar is the only thing that makes you fat
About of the body's energy needs at rest is supplied by fat.
a. 10 percent
O b. 25 percent
O c. 35 percent
O d. 60 percent
O e. 75 percent
Answers
Hope this helps
please help me what hotspot is it
Answers
Answer: i am not 100% sure what it is, but i think its those gray dots
Explanation:
Answer:
Mitochondria
Explanation:
Describe the role of GA in a-amylase production and in germination. Provide evidence for your claim
Answers
Gibberellic acid (GA) plays a crucial role in a-amylase production and germination. GA stimulates the synthesis and release of a-amylase enzymes, which hydrolyze starch into sugars during germination. Experimental studies have demonstrated that the application of GA accelerates a-amylase production and enhances germination in various plant species
In terms of a-amylase production, GA stimulates the synthesis and release of this enzyme. a-amylase is responsible for breaking down starch into simpler sugars, which are then utilized by the plant for growth and development.
Studies have shown that applying GA to plant tissues or seeds results in an increased production of a-amylase, facilitating the conversion of stored starch into energy-rich sugars.
Regarding germination, GA is involved in breaking seed dormancy and promoting the growth of the embryonic plant.
It stimulates the production of hydrolytic enzymes like a-amylase, which enable the hydrolysis of starch reserves in the endosperm, providing the energy needed for germination and seedling establishment.
Additionally, GA helps in cell elongation and division, promoting the growth of the embryo and the emergence of the radicle.
Evidence for GA's role in both processes includes studies where the exogenous application of GA to seeds or plant tissues has been shown to enhance a-amylase production and promote germination.
Conversely, inhibiting GA synthesis or action results in reduced a-amylase activity and impaired germination. These findings support the critical involvement of GA in both a-amylase production and germination processes in plants.
For more such answers on Gibberellic acid
https://brainly.com/question/15609011
#SPJ8
Why do you think blood tests are an effective way of measuring our health?
Answers
Answer:
Blood tests are an effective way of measuring our health because they can provide important information about various aspects of our health, including our overall health status, nutritional status, and the presence of any diseases or conditions. Blood tests can measure the levels of various substances in our blood, including hormones, enzymes, proteins, and electrolytes, which can provide valuable insights into the functioning of our body's systems and organs. Blood tests can also detect the presence of infections, inflammation, or other abnormal conditions that may require medical attention. Overall, blood tests are a safe, non-invasive, and reliable way of gathering important health information.
Explanation:
where do land plants get the water that they use in photosynesis
Answers
Answer:
Land plants get the water they use in photosynthesis from the soil through their roots.
Land plants obtain water for photosynthesis from the soil, which is absorbed through their roots and transported to the leaves through the xylem.
Land plants obtain water for photosynthesis primarily from the soil. The process involves a series of steps that enable water uptake and transportation within the plant. First, plant roots, equipped with root hairs, extend into the soil and absorb water through osmosis. This occurs because the concentration of dissolved substances, such as minerals, in the root cells is higher than that in the surrounding soil.
Water moves from the roots to the xylem, which is a specialized tissue responsible for transporting water and nutrients throughout the plant. This upward movement is facilitated by a combination of root pressure, capillary action, and most importantly, transpiration. Transpiration is the loss of water vapor from the plant's leaves through small openings called stomata. As water evaporates from the leaf surfaces, it creates a negative pressure gradient that pulls water up through the xylem from the roots.
Once water reaches the leaves, it is utilized during photosynthesis. The water molecules are split during the light-dependent reactions, releasing oxygen as a byproduct and providing electrons for the production of ATP and NADPH, which are essential for the light-independent reactions (Calvin cycle).
In summary, land plants rely on their roots to absorb water from the soil, which is subsequently transported through the xylem to the leaves where it is utilized in the process of photosynthesis.
Know more about xylem here:
https://brainly.com/question/14197052
#SPJ8
What are the stages of bee development (eggs,larvae,pupae)
Answers
The stages of bee development are egg, larva, pupa, and adult. Eggs hatch into larvae, which then transform into pupae. Finally, adult bees emerge and undergo further maturation.
The stages of bee development are:
1. Egg: The bee life cycle begins when the queen bee lays an egg in a honeycomb cell.
2. Larva: The egg hatches into a larva, which is a legless, grub-like creature. The larva is fed a special diet called royal jelly, which stimulates its growth.
3. Pupa: The larva undergoes metamorphosis and transforms into a pupa. Inside the sealed cell, the pupa undergoes various changes, developing into an adult bee.
4. Adult Bee: After completing the pupal stage, the fully developed adult bee emerges from the cell. The bee then undergoes further maturation, such as its exoskeleton hardening, wings expanding, and adult coloration appearing.
It's important to note that there are three castes of bees: queen, worker, and drone. The development process for each caste is similar, but the diet and size of the cells they are raised in differ, leading to their distinct roles within the colony.
For more questions on bee development:
https://brainly.com/question/28696131
#SPJ8
Word Bank:
Cell wall, cell membrane, capsid, nucleus, mitochondria, membrane-bound organelles, central vacuole, made of cells, requires host cell, grow and reproduce, can obtain energy, may cause disease, antibiotics may be used to treat infection, vaccines are used to prevent infection, living thing, DNA, and RNA.
From the word bank above list each beside Prokaryotic, Eukaryotic, and virus. All words may be used more than once.
Prokaryotic cells:
Eukaryotic cells:
Viruses:
Answers
Prokaryotic cells: cell wall, cell membrane, nucleus, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.
Eukaryotic cells: cell wall, cell membrane, nucleus, mitochondria, membrane-bound organelles, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.
Viruses: capsid, requires host cell, may cause disease, antibiotics may be used to treat infection, vaccines are used to prevent infection, living thing, DNA, and RNA.
What are viruses?Viruses are small infectious particles that propagate solely inside living cells of other organisms. Their structure comprises genetic material bound by a protein coat called a capsid, with some viruses displaying an additional lipid envelope surrounding the capsid.
Since viruses cannot self-reproduce, host cells are crucial to their replication and production.
Learn about Eukaryotic cells here https://brainly.com/question/20297189
#SPJ1
1) A model of a bacteriophage is shown in the image here. When comparing the virus/bacteriophage to the host cell that it infects, which statements are accurate? Select ALL that apply.
es
A) Viruses and bacterial cells have DNA or RNA.
B) Viruses and bacterial cells undergo cell division.
Viruses and bacterial cells are approximately the same size.
D) Viruses and bacterial cells contain structures made from proteins.
E) Viruses and bacterial cells contain mitochondria for energy production,
Answers
The most accurate statements are A and C which represents that viruses and bacterial cells contain structures made from proteins, and viruses and bacterial cells have DNA or RNA.
What do you mean by Bacteriophage?Bacteriophage may be defined as any group of viruses that are capable of infecting bacteria.
Genetic information in bacteria and many viruses are encoded in DNA, but in some viruses, RNA is there to encode genetic information.
Viruses do not undergo the process of cell division, bacteria lack mitochondria for energy production.
The size of the bacteria is found to be much greater than viruses.
Therefore, the most accurate statements are viruses and bacterial cells contain structures made from proteins, and viruses and bacterial cells have DNA or RNA.
To learn more about Viruses, refer to the link;
https://brainly.com/question/17395741
#SPJ2
The diagram shows a type of lipid.
Which type of lipid is shown?
Answers
The following experiment was carried out at ILC laboratories to measure the effects of different nutrient solutions on bean root growth. Three nutrient solutions were made and are shown below.
Interpret the results for each solution.
In your answer for each, explain how the solution ranked in relation to the other two (in terms of growth and health of the plant); state the evidence that supports your answer; and explain why the plant grew the way it did.
Answers
Answer:
Based on the results of the experiment, it can be inferred that solution 1 was the most effective at promoting bean root growth and plant health, while solutions 2 and 3 were less effective.
Explanation:
Solution 1 contained all required nutrients and resulted in root growth of 47mm and deep green leaf color. This indicates that the plant was healthy and thriving, as it was able to access all the nutrients it needed for growth and development. The deep green color of the leaves suggests that the plant was able to carry out photosynthesis effectively, which is crucial for plant health and growth. The evidence that supports this conclusion is the length of the roots and the color of the leaves, both of which indicate that the plant was healthy and thriving.
Solution 2, which lacked nitrogen, resulted in root growth of only 17mm and pale-green yellow leaves. This suggests that the plant was not receiving all the nutrients it needed for optimal growth and health. Nitrogen is an important nutrient for plant growth, particularly for the development of leaves, so the pale-green yellow color suggests that the plant was not able to carry out photosynthesis effectively. The evidence that supports this conclusion is the short length of the roots and the pale-green yellow color of the leaves.
Similarly, solution 3, which contained only distilled water, resulted in root growth of only 14mm and pale-green yellow leaves. This indicates that the plant was not receiving any of the nutrients it needed for growth and development. Without nutrients, the plant was not able to carry out essential processes such as photosynthesis, which is why the leaves were pale-green yellow in color. The evidence that supports this conclusion is the short length of the roots and the pale-green yellow color of the leaves.
Overall, the results of the experiment suggest that providing all required nutrients is essential for promoting bean root growth and plant health. Solutions that lack key nutrients, such as nitrogen, are less effective at promoting growth and can lead to pale-green yellow leaves and stunted root growth. Similarly, providing only distilled water is not sufficient for promoting plant growth and can lead to poor health and stunted growth.
Circulatory System
Label the following parts:
Heart
Vein
Artery
Capillary
10
Answers
The circulatory system, also known as the cardiovascular system.
What is the circulatory system?The heart is a muscular organ located in the chest. It acts as a pump, continuously contracting and relaxing to circulate blood throughout the body. The heart has four chambers: two atria (left and right) and two ventricles (left and right).
Veins transport deoxygenated blood back to the heart from the body tissues. Arteries carry oxygenated blood away from the heart to various organs and tissues. Capillaries the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues.
Learn more about circulatory system:https://brainly.com/question/29259710
#SPJ1
interpret what data means about the otter’s role in the kelp forest. what is the percent fish in diet? (otters present) what is the percent fish in diet? (otters absent) what is the percent of invertebrates in diet? (otters present) what is the percent of invertebrates in diet? (otters absent)
Answers
In general, otters play a crucial role in maintaining the health of kelp forests. They are considered a keystone species because they feed on sea urchins, which are known to graze on kelp.
Without otters, sea urchin populations can grow unchecked and damage the kelp forest ecosystem. By keeping sea urchin populations under control, otters help maintain the balance between kelp and other organisms in the ecosystem.
The percentage of fish and invertebrates in the otter's diet can vary depending on their location and availability of prey. Otters are known to be opportunistic feeders and will consume a variety of prey depending on what is available. Studies have shown that otters can consume a range of invertebrates, including crabs, clams, and snails, as well as fish species such as rockfish and herring.
In general, when otters are present, there may be a lower percentage of sea urchins and a higher percentage of fish and invertebrates in the ecosystem.
Conversely, when otters are absent, the sea urchin population may grow unchecked, leading to a decline in kelp and potentially impacting other species that rely on the kelp forest ecosystem.
Know more about otter here:
https://brainly.com/question/18619379
#SPJ11
Recently, oil from rectangle resulted in a disaster and ecosystems containing many unique species. The potential loss of these species could result in
Answers
The potential loss of unique species due to a disaster is referred to as mass extinction. When large numbers of species disappear over a short time period then it is called mass extinction.
Biodiversity threats include burning fossil fuels and deforesting forests and other wildernesses for industrial agriculture. Other human activities, such as wildlife poaching and hunting, can also have serious impacts.
When ecosystem services no longer adequately meet social needs, biodiversity loss can have far-reaching, direct human health consequences. In addition, ecosystem services impact indirectly on livelihoods, incomes, local migration, and, in some cases, political conflict.
To learn more about extinction, refer to the link:
https://brainly.com/question/12934291
#SPJ1
A scientist is testing whether light color affects plant
growth. She places three groups of plants in boxes, each
with only one color of light: red, blue, or green. She places
a fourth group of plants in natural light. Each day she
measures the plants and records their growth.
What is the dependent variable in this experiment?
OA. The color of light the plants received
B. The plants in natural light
OC. The type of plants she used
D. The growth of the plants
Answers
The dependent variable in this experiment is D. The growth of the plants.
The scientist is measuring and recording the growth of the plants each day, which is the variable that is being affected and influenced by the different colors of light. The growth of the plants is the outcome that is dependent on the variable being tested, which is the light color.The dependent variable in this experiment is the growth of the plants, as it is the outcome that is being measured and recorded. The scientist is interested in observing how the different colors of light affect the growth of the plants. By comparing the growth of the plants in red, blue, green, and natural light conditions, the scientist can analyze the impact of light color on plant growth.In conclusion, the dependent variable in this experiment is the growth of the plants. By manipulating the colors of light that the plants receive and measuring their growth over time, the scientist aims to determine the effect of light color on plant growth.
For more questions on growth of the plants:
https://brainly.com/question/9323511
#SPJ8
Which of the following scenarios is an example of temporal isolation?
A.
Fossil evidence suggests that a number of members of one squirrel species evolved over time into two separate species, each on opposite sides of the Grand Canyon.
B.
Black-eyed Susans and daisies used to be part of the same species. A random mutation in a subset of a population caused one group to release their pollen three weeks before the other, causing interbreeding to cease.
C.
Two species of tree crickets live in a Costa Rican dry forest. Their habitats and ranges overlap. The two species never interbreed because the calls of the males are different and do not attract females of the other species.
D.
Indian paintbrush flowers vary greatly in color. Bumblebees form a search image for the most average common color and preferentially pollinate those flowers.
Answers
Answer:
B. Black-eyed Susans and daisies used to be part of the same species. A random mutation in a subset of a population caused one group to release their pollen three weeks before the other, causing interbreeding to cease.
Explanation:
Temporal isolation, where temporal relates to time. So temporal isolation is the process where two populations will reproduce at different times/different seasons and therefore cause a split in species. In this case, we see the flowers release pollen at different times and caused a split into two distinct species.
What percent of the US population is involved in production agriculture?
Answers
Answer:
Farm and ranch families comprise less than 2% of the U.S. population.
Explanation:
What do we call the attraction that allows molecules of chalk to stick together
A. Adhesion
B. Cohesion
C. Force
D. None of these
Answers
The attraction that allows molecules of chalk to stick together is called Cohesion.
The correct option is B.
What are the forces of cohesion?
The force of attraction between molecules of the same substance is known as the force of cohesion. The force of adhesion is the attraction that exists between two dissimilar materials, such as water and glass.
Therefore, since the particles of chalk are similar, the attraction that allows molecules of chalk to stick together is called cohesion.
Learn more about cohesion at: https://brainly.com/question/29567749
#SPJ1
A solution with a lower solute concentration in comparison to Solution
Answers
Answer:
Hypotonic
Explanation:
When you are comparing solutions with unequal solute concentrations, the solution with a higher solute concentration is a hypertonic, while the one with a lower one is a hypotonic. If they are equal, then they are isotonic.
Which is MOST likely needed when describing the change in position of an object?
Answers
Answer:
setting
Explanation:
because what it is is important to know
According to this, speed or motion is most likely needed when describing the change in position of an object.
What is motion?Motion is a change in the position of an object over time.
Motion is defined in terms of expulsion, distance, velocity, acceleration, time and speed.
There are three main types of motion which include circular, linear and oscillatory motion.
Thus, speed or motion is most likely needed when describing the change in position of an object.
To learn more about motion click here:
https://brainly.com/question/22810476
With asexual reproduction is the genetic information the same or different?
Answers
Answer:
same
Explanation:
Asexual reproduction gives rise to two physically and genetically identical daughter cells. Thus, the genetic information remains the same.
In asexual reproduction, the daughter cells divide through the process of mitosis, which results in two daughter cells from one parent cell.
In mitosis, the chromosomes which are duplicated segregate into the two emerging cells around which then a nuclear membrane forms. In this case, there is no recombination by crossing-over or chiasmata formation that happens in the case of meiosis.
It is the recombination by crossing-over or chiasmata formation that results in varying genetic information.
Thus, as these processes do not happen in mitosis, genetic information remains the same.
Learn more about mitosis in:
https://brainly.com/question/31626745
#SPJ1
Describe way in which plants are adapted to swed dispersal by animals give an example
Answers
Some seeds feature barbs or hooks that cling to an animal's skin, fur, or feathers. Birds can carry away the sticky seeds of plants like pittosporum.
How do plants adapt to animal seed dispersal?Seeds from plants that rely on animals for distribution are made to fit either within or outside of the animal. Burr- or hook-shaped seeds can cling to an animal's fur. Plants give seeds that are carried internally an enticing fruit pulp reward in exchange for the journey.
What kind of animal dispersal are examples?Mangoes, guavas, breadfruit, carob, and several fig species are some examples. Aardvarks and the desert melon (Cucumis humifructus) share a symbiotic connection in South Africa, where the mammals consume the fruit for food.
To know more about seeds visit:-
https://brainly.com/question/29093380
#SPJ1
Bacteria are unicellular?
-False
-True
Answers
Answer:
True
Explanation:
Answer:
True
Explanation:
I hope this helps.
In bryophytes growth takes place at :
a) apices
b) lateral region
c) through out the body d) All are correct
Answers
Answer:
apices
Explanation:
The growth occurs by single apical cell in initial stages, But mature plants have several scattered apical cells on the margin so growth also takes place at many points..
In bryophytes, growth takes place at the a) apices
Bryophytes are non-vascular land plants that are divided into three evolutionary lineages: mosses, liverworts, and hornworts.Bryophytes exhibit a dominant gametophyte stage generation. During this gametophytic stage, the plant is haploid (n) and reproductive structures that produce the gametes are developed.In bryophytes, growth occurs by a single apical cell at an initial stage, it involves the enlargement of the cell followed by cell division. Mature plants exhibit several scattered apical cells on the margin, which can divide to form new cells.In conclusion, in bryophytes, growth occurs at the apices.
Learn more in:
https://brainly.com/question/1177339?referrer=searchResults
Can you help me with this question!!!
How does a bud become a leaf or flower?