When immune function is weakened, the pathogenicity of is seen as opportunistic. Although oral fungal infections are rare, when they do occur, they are more painful and can occasionally cause tissue damage. The clinical diagnosis can be supported by cytology and tissue biopsies.
Fungal infections may affect anybody, including healthy individuals. People often breathe in or come into touch with fungal spores without becoming ill since fungal infections are widespread in the environment. However, these fungi are more likely to result in an infection in people with compromised immune systems.
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What does the replication of DNA during interphase ensure during cell replication?
A. Mutations are connected before the cell divides
B. Each daughter cell gets an exact copy of the cells DNA
C. Crossing over occurs prior to cell division
D. Genetic variation is created in daughter cells
During meiosis i, maternal and paternal chromosomes come together during the process called ________ to form a ________.
Answer:
synapsis, tetrad
Explanation:
A mutant strain of e. Coli produces β‑galactosidase in the presence and in the absence of lactose. Where in the operon might the mutation in this strain occur, and why?.
Answer:
A + E
Explanation:
The operator region where the mutation occurs and the operator does not binds to the repressor normally. The mutation can also occur in the Lacl gene which leads to an inactive lac repressor.
how are these models (the SIM and the diagram) similar and how are they different?
These models (the SIM as well as the diagram) are similar because they both depict the fate of energy storage molecules during photosynthesis. However, they also differ since the SIM model shows the products and reactants (time 1, time 2) in the producer cell, whereas, the diagram illustrates the overall reaction during photosynthesis.
The SIM model shows that carbon dioxide and water (reactants) are present within the chloroplast (Time 1) in a producer cell. It also shows the products formed during the process of photosynthesis, i.e. Energy Storage Molecules (ESM) and oxygen, within the chloroplast (Time 2) in the producer cell.
The diagram, on the other hand, illustrates the overall reaction that occurs during photosynthesis as well as the rearrangement of atoms during this reaction. It represents the reaction for photosynthesis which can be also written as:
6 CO₂ + 6 H₂O + light energy → C₆H₁₂O₆ + 6 O₂
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which are then made into complex carbohydrates such as
Complex carbohydrates are macromolecules composed of long chains of simple sugar molecules, such as glucose, fructose, and galactose. These simple sugar molecules can be linked together in different ways to form complex carbohydrates, which can have a variety of functions in the body, including energy storage and structural support.
One example of a complex carbohydrate is starch, which is a common energy source in many plants. Starch is made up of long chains of glucose molecules that are linked together in a specific way that allows them to be easily broken down by enzymes in the body. Another example of a complex carbohydrate is cellulose, which is a major component of plant cell walls. Cellulose is also composed of long chains of glucose molecules, but these molecules are linked together in a different way than in starch, making it more difficult for enzymes to break down.
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Which of the following is true about pure substances?
A.
A pure substance has the same chemical properties throughout.
B.
All pure substances are unable to be separated by any means.
C.
A pure substance can only be made up of one kind of atom.
D.
A pure substance can always be separated by physical means.
Answer:
pretty sure its B
Explanation:
Answer: A
Explanation:
why it is so important for the body to be protected against viral pathogens?
Answer:
Certain viral pathogens can lead to death. Viruses like Human Immunodeficiency Viruses (HIV) are not considered lethal on their own but lower your body's ability to fight infections, and over time cause Acquired Immunodeficiency Syndrome (AIDS). If infected by this virus you could be killed by the common cold. That is why it is important to be protected against viral pathogens.
Explanation:
Nucleic acid segments and are nucleic acids that can store biological information based on the sequence of their nucleotide monomers. Figure 1 shows a short segment of each of the two types of nucleic acids. Which of the following best describes a structural difference between and ?
Full Question (figure attached):
Nucleic acid segments and ar
DNA and RNA are nucleic acids that can store biological information based on the sequence of their nucleotide monomers. Figure 1 shows a short segment of each of the two types of nucleic acids. Which of the following best describes a structural difference between DNA and RNA?
A. DNA contains four types of nitrogenous bases, whereas RNA contains only two types of nitrogenous bases
B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose.
C. A DNA molecule is composed of two parallel strands with the same 5'-3' directionality, whereas an RNA molecule is composed of only one strand
D. Phosphate groups provide rigidity to DNA, but RNA is flexible and contains no phosphate groups
Answer:
B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose.
Explanation:
A. DNA contains four types of nitrogenous bases, whereas RNA contains only two types of nitrogenous bases - this is false. Both contain four types of nitrogenous bases. DNA contains cytosine, guanine, adenosine and thymine, whereas RNA contains cytosine, guanine, adenine, and uracil.
B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose. - this is true, each nucleotide in DNA contains a deoxyribose sugar, whereas each nucleotide in RNA contains a ribose sugar
C. A DNA molecule is composed of two parallel strands with the same 5'-3' directionality, whereas an RNA molecule is composed of only one strand - this is false. DNA is composed of 2 strands, and RNA is composed of one, but the DNA strands run in an anti-parallel configuration (one runs 5'-3', the other runs 3'-5')
D. Phosphate groups provide rigidity to DNA, but RNA is flexible and contains no phosphate groups - this is false, both DNA and RNA nucleotides contain phosphate groups
Which beliefs of the times did Darwin’s ideas conflict with?
A. Organisms never change.
B. Organisms never go extinct.
C. The Earth was 6,ooo years old.
D. All of these
Will give brainliest :')
5.
Please help!
Order the locations from most hours of daily sunlight to least on the December solstice. Most hours of sunlight Least hours of sunlight
The order from most hours of daily sunlight to least on the December solstice is: 1. Equator, 2. Tropic of Capricorn, 3. Arctic Circle, 4. Antarctic Circle.
The amount of sunlight received at different locations on the December solstice varies due to the tilt of the Earth's axis. On this date, the Northern Hemisphere experiences its winter solstice, while the Southern Hemisphere experiences its summer solstice.
The Equator, located at 0 degrees latitude, receives the most consistent amount of sunlight throughout the year. On the December solstice, it receives roughly 12 hours of daylight, making it the location with the most hours of sunlight.
Moving towards the Southern Hemisphere, the Tropic of Capricorn (approximately 23.5 degrees south latitude) marks the boundary of the tropics. On the December solstice, locations near the Tropic of Capricorn receive more sunlight than locations further north, but less than the Equator.
As we move towards the polar regions, both the Arctic Circle (approximately 66.5 degrees north latitude) and the Antarctic Circle (approximately 66.5 degrees south latitude) experience the least amount of sunlight on the December solstice. In these regions, the sun may not rise above the horizon or may only provide a few hours of daylight, resulting in the least hours of sunlight during this time of year.
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Help pls! First correct answer will get brainliest and all guesses WILL be reported!!
Answer:
18.
a) 50%
b) 0%
c) 50%
19.
a) 0%
b) 0%
c) 100%
20.
a) 100%
b) 0%
c) 0%
21.
a) 0%
b) 50%
c) 50%
Explanation:
If you have any other questions like this, use punnet squares, they really help a lot.
name and describe the group of organisms that scientists think likely evolved into multicellular organisms.
Choanoflagellates is the group of organisms that scientists think likely evolved into multicellular organisms.
Choanoflagellates are a group of single-celled eukaryotes that are found in various aquatic environments, including freshwater and marine ecosystems. Choanoflagellates are characterized by a distinctive collar of microvilli surrounding a single flagellum, which they use for movement and feeding. They are filter feeders, capturing bacteria and other small particles using their collar of microvilli.
What makes choanoflagellates particularly interesting is their striking similarity to a specific type of cell found in multicellular organisms called the choanocyte or collar cell. Choanocytes are present in sponges, which are considered some of the simplest multicellular animals. The resemblance between choanoflagellates and choanocytes suggests a potential evolutionary connection.
Scientists hypothesize that the transition from solitary choanoflagellates to multicellular organisms may have occurred through a process of cell aggregation and cooperation. Individual choanoflagellates may have clumped together, forming colonies where cells remained attached to each other. Over time, this cooperative behavior could have led to specialization and division of labor among the cells, ultimately resulting in the emergence of multicellular organisms.
While the exact details of this transition are still under investigation, studies on choanoflagellates provide valuable insights into the origins of multicellularity and the evolutionary steps that may have led to the diverse range of complex life forms we observe today.
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An upper motor neuron supplying the lateral rectus muscle of the eye would be part of the ________ tract(s)
Answer:
corticospinal tract
The neurons that travel in the corticospinal tract are referred to as upper motor neurons; they synapse on neurons in the spinal cord called lower motor ...
If you say that a ground squirrel has greater evolutionary fitness than another ground squirrel in the same population, you mean that the animal
Answer:
Has more offspring that have the ability to survive and reproduce themselves.
Explanation:
Evolution fitness can be defined as a characteristic or quality possessed by living organisms and determines their adaptability, as well as level of success in terms of reproduction i.e giving birth to offsprings.
Hence, if you say that a ground squirrel has greater evolutionary fitness than another ground squirrel in the same population, you mean that the animal has more offspring that have the ability to survive and reproduce themselves.
Scientists were conducting a multiyear study on the effectiveness of a new drug for long-term memory loss. They
gave some of the test subjects the new drug to find out if it improves their long-term memory
Which is a possible limitation of this study?
O Test subjects may want to participate in additional experiments.
O Test subjects may find that the drug is not effective.
O Test subjects may get bored and want to quit early.
O Test subjects may have full-time jobs.
Answer:A
Explanation: it A
Answer:
A
Explanation:
I did the test E
Which of the following mutations at the DNA level is NOT a silent mutation? Use your amino acid codon sheet to answer the question.
A) CAA --> CGA
B) GGT --> GGC
C) TCA --> TCG
D) TAA --> TAT
this is probably easy but im not smart, so here
Once organisms die, their organic remains are decomposed. If they are left under the earth with heat and pressure for millions of years they can become fossil fuels. What are three examples of these?
Answer:
Three examples of fossil fuels are:
1). Petroleum
2). Coal
3). Natural gas
Lichen consist of at least two species, a saprophytic fungus, and a(n) __________ which may be either prokaryotic or eukaryotic.
Lichens consist of at least two species, a saprophytic fungus, and a photosynthetic partner known as a photobiont.
The photobiont can be either a prokaryotic organism, such as a cyanobacterium, or a eukaryotic organism, such as a green alga or a photosynthetic yeast. This partnership between the fungus and the photobiont is known as mutualistic symbiosis.
The fungus provides the structure and protection for the lichen, while the photobiont performs photosynthesis to produce organic compounds that benefit both organisms. The fungus obtains nutrients from decaying organic matter in the environment, and the photobiont supplies the lichen with carbohydrates and other essential compounds through photosynthesis.
This mutualistic relationship allows lichens to colonize a wide range of habitats, including rocks, trees, and soil surfaces. The specific combination of fungus and photobiont can vary, leading to the diverse forms and colors of lichens observed in nature. The partnership between the fungus and the photobiont is essential for the survival and ecological success of lichens in various ecosystems.
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What do the respiratory system and cellular respiration have in common? question 2 options: oxygen plays a key role in both. they both rely on the heart. they both expel oxygen as a waste product. they have nothing in common.
answer: A. Oxygen plays a key role in both.
Explanation: I took the quiz.
which of the following conditions will result in the rabbit population pictured in the graph below? a. ample land, cold springs b. little land, normal conditions c. moderate land, hot summers d. ample land, harsh winters please select the best answer from the choices provided a b
The best answer would be option a: ample land, cold springs. This is because the graph shows a peak in the rabbit population during the spring season, which is likely due to an abundance of resources (ample land) and the cold weather preventing overpopulation and disease spread.
Option d (ample land, harsh winters) may also result in a similar population trend, but the graph does not show a significant decrease in population during the winter months. Options b and c are not likely to result in the observed population trend as they do not provide the necessary conditions for the rabbits to thrive during the spring season.
To determine which of the following conditions will result in the rabbit population pictured in the graph below, we would need to see the actual graph. However, I can help explain how each choice could impact a rabbit population:
a. Ample land, cold springs: This option provides plenty of space for rabbits to live and reproduce, but the cold springs might slow down their reproduction rate or cause challenges in finding food.
b. Little land, normal conditions: This option limits the space available for rabbits, which could lead to overcrowding and competition for resources, potentially limiting population growth.
c. Moderate land, hot summers: With moderate land, there is some space for the rabbit population to grow. However, hot summers might create stress on the rabbits, leading to reduced reproduction rates and limited food resources.
d. Ample land, harsh winters: In this case, rabbits have plenty of space to reproduce, but harsh winters might cause significant die-offs due to cold temperatures, lack of food, or increased predation.
Based on your given choices, please refer to the graph and consider how the conditions mentioned in each choice may impact the rabbit population.
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What makes fossil fuels so popular?
A. it does not affect the environment to collect the fuels
B. it creates byproducts that can be reused to make more electricity
C. it creates an excess of carbon dioxide to keep the world warm enough for life
D. it is less expensive to produce and distribute than renewable energy
Answer:
D
Explanation:
Because fossil fuels are inexpensive to produce, and distribute. It's not A because fossil fuels are harmful to the environment. Not B because it's not reusable. And it's not C because it won't make the world warm enought for life.
what important differences would you expect to see between a sexually reproducing population of organisms and an asexually reproducing population of organisms?
There is more genetic diversity among the members of groups that reproduce sexually.
What are these two variations in sexually reproducing organisms caused by?Gamete creation in the gonads, meiosis, and gamete fusion are all components of sexual reproduction. These mechanisms result in differences because new gene combinations are formed as a result of chromosome segregation changes, gamete fusion by accident, and gene crossover.
While asexual reproduction produces animals that are exact replicas of one parent, sexual reproduction integrates the genetic information from two parental organisms to produce a genetically distinct offspring. Populations that reproduce sexually have higher levels of genetic diversity among the species.
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Identify at least two differences and two similarities between cortical and trabecular bone. These may be anatomical or physiological.
Cortical and trabecular bone are two types of bone tissue found in the human body.
Cortical and trabecular bone are two types of bone tissue found in the human body. Cortical bone, also known as compact bone, forms the outer layer of most bones and is denser than trabecular bone. Trabecular bone, on the other hand, is also known as spongy or cancellous bone, and is found within the inner core of bones. Here are two differences and similarities between the two types of bone tissue.
Differences:
1. Anatomical differences: Cortical bone is characterized by its hard, dense structure, which provides strength and protection to the bones. Trabecular bone, on the other hand, has a porous, spongy structure that helps it to absorb and distribute force and weight throughout the bone.
2. Physiological differences: Cortical bone is responsible for providing structural support to the body and is less metabolically active than trabecular bone. Trabecular bone, on the other hand, is highly metabolically active and plays an important role in bone remodeling and the regulation of calcium and other minerals in the body.
Similarities:
1. Both types of bone tissue contain collagen, which gives them their strength and flexibility.
2. Both cortical and trabecular bone are essential for maintaining bone health and preventing fractures. While cortical bone is responsible for providing structural support and protecting the body, trabecular bone helps to absorb and distribute force and weight throughout the bones.
In conclusion, while cortical and trabecular bone differ anatomically and physiologically, they both play important roles in maintaining bone health and preventing fractures. Understanding the differences and similarities between these two types of bone tissue can help to promote better bone health and prevent conditions like osteoporosis.
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Amoeba Sisters Video Recap: Prokaryotic vs. Eukaryotic Cells 7. At the end of the video, there's a vocabulary challenge mentioned. Can you use the vocab to create your own sentences to compare and contrast prokaryotic cells with eukaryotic cells? If you need more space, you can attach an additional sheet of paper.
Answer:
True nucleus and organelles.
Explanation:
The main difference between Prokaryotic cells and Eukaryotic Cells are given below.
Prokaryotic cells have no true nucleus while Eukaryotic Cells have true nucleus. true nucleus means that membrane is surrounded the nucleus which clearly show the nucleus. Prokaryotic cells have no organelles while eukaryotic cells have organelles which perform specific function in the cell. these organelles are plasma membrane, ribosome, mitochondria, vacuoles, cytoskeleton, plastids and endoplasmic reticulum.
True nucleus and organelles.
What is the difference between prokaryotes and eukaryotes?
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information.
Thus, the True nucleus and organelles are the answer.
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A pea plant with wrinkled peas is crossed with a pea plant with smooth peas. All of the offspring produced have wrinkled peas. What can be inferred about the wrinkled pea trait?
A) It is recessive.
B) The smooth and wrinkled traits are codominant.
C) The plant is a hybrid.
D) It is dominant.
Answer:
D. It is dominant
Explanation:
A dominant trait will always be the one portrayed as long as it is in the genes. Think of it as an override. It is the reason 2 brown-eyed people can have a blue-eyed child. The Punnett square is always the first thing I think of when it comes to genes.
| W | W |
w| Ww | Ww |
w| Ww | Ww |
This is what the Punnett Square for your peas would look like, between a homo Dominant plant and a homo Recessive plant.
Answer:
it is dominant
Explanation:
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You discover a new species of insect. You learn that its gamete contain 4 chromosomes each and contain 20 pg of DNA. Given this information, what can you conclude about this organism's somatic cells? a They will contain 4 sister chromatids. b They will contain 40 pg of DNA during GO c They will contain 2 chromosomes during prophase of mitosis. d They will be haploid (2n)
options a, b, and c are not accurate conclusions based on the given information.
The correct answer is d) They will be haploid (2n). Gametes are haploid cells, meaning they contain half the number of chromosomes as somatic cells. Since the insect's gamete contains 4 chromosomes, the somatic cells would have a diploid number of 8 chromosomes (2n = 8). The amount of DNA in the gamete is not necessarily indicative of the amount of DNA in the somatic cells, as somatic cells can undergo DNA replication and have varying amounts of DNA depending on the stage of the cell cycle.
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Two ways a Tumor can form
Answer:
The first way is when cells grow old or become damaged, they die, and new cells take their place. Sometimes this orderly process breaks down, and abnormal or damaged cells grow and multiply when they shouldn't, when this happens it is usually noncancerous (benign). The second way is when the body’s normal control mechanism stops working. Old cells do not die and instead grow out of control, forming new, abnormal cells. These extra cells may form a mass of tissue, when this happens more often then not the tumor is usually cancerous.
Explanation:
I hope this helps, if you have anymore questions please feel free to ask, I hope you have a great rest of your day. ;D
Which best describes the link between survivorship curves and opportunistic species?
a) Opportunistic species are limited by density-independent factors and have many offspring. b) Opportunistic species are limited by density-independent factors and have few offspring.
c) Opportunistic species are limited by density-dependent factors and have few offspring.
d) No answer is correct.
e) Opportunistic species are limited by density-dependent factors and have many offspring.
The option that best describes the link between survivorship curves and opportunistic species is e) Opportunistic species are limited by density-dependent factors and have many offspring.
The survivorship curve refers to the visual representation of the rate of mortality in a species over the course of its lifetime. It is used to illustrate the life history of an organism, including the rate at which it ages and its mortality rate. Life tables are used to estimate survival probabilities and mortality rates for populations of various organisms. The reproductive strategy of an organism is often closely linked to its survivorship curve. Reproductive rates are usually highest in opportunistic species that have many offspring and a high mortality rate, which is indicated by a type III survivorship curve.
Opportunistic species are those that make the most of unpredictable changes in their environments. They are often associated with a high reproductive rate and a short lifespan. Opportunistic species, on the other hand, have a type III survivorship curve, which means that they have a high rate of mortality early in life, but if they survive that period, they can live to a ripe old age. In comparison to equilibrium species, which have a type I survivorship curve, opportunistic species have a higher reproductive rate and a shorter lifespan. They are more vulnerable to changes in their surroundings and are limited by density-dependent factors.
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In the 1890s, Northern elephant seals were hunted almost to extinction. An unknown population of less than one hundred animals managed to survive on the tiny island of Guadalupe off of Mexico. The current population of over 100,000 is thought to be derived from that tiny remnant population. Compared to the Southern elephant seals (which did not experience such a bottleneck), the Northern elephant seals likely have (Click to select) genetic diversity and (Click to select) levels of genetic diseases.
Complete question:
In the 1890s, Northern elephant seals were hunted almost to extinction. An unknown population of less than one hundred animals managed to survive on the tiny island of Guadalupe off of Mexico. The current population of over 100,000 is thought to be derived from that tiny remnant population. Compared to the Southern elephant seals (which did not experience such a bottleneck), the Northern elephant seals likely have -------- (Lower - Higher) genetic diversity and -------- (Lower - Higher) levels of genetic diseases.
Answer:
In the 1890s, Northern elephant seals were hunted almost to extinction. An unknown population of less than one hundred animals managed to survive on the tiny island of Guadalupe off of Mexico. The current population of over 100,000 is thought to be derived from that tiny remnant population. Compared to the Southern elephant seals (which did not experience such a bottleneck), the Northern elephant seals likely have Lower genetic diversity and Higher levels of genetic diseases.
Explanation:
Genetic drift is the random change that occurs in the allelic frequency of a population through generations. The magnitude of this change is inversely related to the size of the original population. These changes produced by genetic drift accumulate in time. Eventually, some alleles get lost, while some others might set. Genetic drift affects a population and reduces its size dramatically due to a disaster or pressure-bottleneck effect- or because of a population split -founder effect-.
In the exposed example, extensive hunting acted as a pressure that reduced the number of Northern elephant seals to fewer than 100. This population experienced one or many generations of small size since these animals were affected by hunting. As the survivors did not have the whole genetic pool of the original population, the population size might have recovered to a current population size of 1000,000 individuals, but the genetic pool might have not. When the small population increases in size, it will have a genetically different composition from the original one. In these situations, there is a reduced genetic variability, with a possibility of developing a peculiar allelic component. If the survivors in the population carried or developed a mutation, probably this mutation passed from generation to generation. It will involve more individuals each time and increase the probability of developing a genetic disease.
in principle, at least, one way to increase the concentration of glucose 6‑phosphate (g6p) is to drive the equilibrium reaction to the right by increasing the intracellular concentrations of glucose and pi. the maximum solubility of glucose is less than 1 m, and the normal physiological concentration of g6p is 250????m. assume a fixed concentration of pi at 4.8 mm. the calculated value of K′eq is 4.74×10−3 m−1. calculate the intracellular concentration of glucose when the equilibrium concentration of glucose 6‑phosphate is 250????m, the normal physiological concentration.
Answers for both scenarios: The concentration (Gle= 13.7 M) can't be soluble in the first scenario while during the second situation the concentration (Gle= 116 μM) is normal and physiologically reasonable.
For the first scenario:
The equilibrium reaction is:
3.8* 10⁻³ = [250*10⁻⁶]/[0.0048][Gle]
Gle = 13.7 M
This can't be soluble at the concentration.
For the second scenario:
c. ΔG⁰ = 13.8 + (-30.5) = -16.7 KJ/mol
-16,700 = -8.315 (298) In Keq
K = 845
845 = [[250*10⁻³] [1.32*10⁻⁶]/ [3.38*10⁻⁶] [Gle]
{Gle} = 1.16*10⁻⁴
= 116 μM
Yes, the concentration is normal and physiologically reasonable.
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