Answers
Answer:
C
Explanation:
Electrons are so small they basically have no weight. They weigh even less than a proton or neutron.
Related Questions
I need help with this practice problem In your own words, in two to three sentences answer the pic
Answers
Because it suffocates other plants and trees under a canopy of leaves, taking all the sunshine and trapping other species in its shade, kudzu is very terrible for the ecosystems that it invades.
It can also endure droughts and low nitrogen environments, giving it an advantage over local species that lack similar characteristics. 4 That doesn't really help because the only other plants that can compete with kudzu are other invasive species.
The Soil Erosion Service and Civilian Conservation Corps purposefully planted it to prevent soil erosion in the state of Pennsylvania, which is where the great kudzu invasion all began.
It was also employed as an ornamental species and to provide shade for residences in the Southeast.
Kudzu also lessens the soil's capacity to store carbon, which contributes to climate change as if that weren't awful enough.
When kudzu invades native pine woods, more carbon from the soil's organic matter is released into the atmosphere, according to a 2014 study on the plant.
This is most likely a result of kudzu's organic matter degrading far more quickly than the vegetation it replaces (like organic matter from trees).
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Describe the different morphological types of viruses and give examples of each type:
a. Helical
b. Icosahedral
c. Complex
2. Compare and contrast the multiplication of bacteriophages versus the multiplication of animal viruses:
3. Describe how arthropods can act as mechanical vectors and biological vectors:
4. Describe five (5) characteristics of fungi and how they differ from othermicroorganisms: 5. Describe common characteristic of protozoans (protists). Name three (3) protozoans that are human parasites:
6. What are helminths? Name and describe three (3) that can cause problems in humans
Answers
Bacteriophages multiply within bacterial cells through the lytic or lysogenic cycle, while animal viruses typically use the steps of attachment, penetration, uncoating, replication, assembly, and release.
Helical viruses have a coiled or spiral-shaped capsid, such as the tobacco mosaic virus. Icosahedral viruses have a symmetrical icosahedral-shaped capsid, like the adenovirus. Complex viruses have a combination of both helical and icosahedral components, such as bacteriophages.
Bacteriophages multiply within bacterial cells through the lytic or lysogenic cycle, while animal viruses typically use the steps of attachment, penetration, uncoating, replication, assembly, and release.
Arthropods can act as mechanical vectors by carrying pathogens on their bodies or in their mouthparts, transmitting them to humans through physical contact. They can also act as biological vectors by harboring and transmitting pathogens within their bodies, such as mosquitoes transmitting malaria parasites.
Fungi are eukaryotic organisms characterized by their filamentous structure (hyphae) and reproduction through spores. They differ from other microorganisms in their mode of nutrition (absorptive), cell wall composition (chitin), mode of reproduction (asexual and sexual), growth at low pH, and preference for organic substrates.
Protozoans are single-celled eukaryotic organisms classified under the kingdom Protista. They exhibit characteristics such as being unicellular, heterotrophic, motile (using cilia, flagella, or pseudopods), and capable of reproduction through binary fission or sexual processes. Examples of human parasites include Plasmodium (causing malaria), Giardia lamblia (causing giardiasis), and Trichomonas vaginalis (causing trichomoniasis).
Helminths are parasitic worms that infect humans. Three examples of helminths that can cause problems in humans are Ascaris lumbricoides (roundworm), Taenia solium (pork tapeworm), and Schistosoma mansoni (blood fluke). These helminths can cause diseases such as ascariasis, taeniasis/cysticercosis, and schistosomiasis, respectively. They have complex life cycles involving different developmental stages and can infect various organs or systems in the human body.
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Which biomolecule contains fats, oils, and waxes?
Answers
Answer:
lipids
Explanation:
have a good day! :)
The corolla of a morning glory forms a shape called
Answers
Answer:
Explanation:
The collection of all the petals of a flower is known as the corolla. It can be of different shapes like clawed, fimbriate, laciniate, spurred, and saccate. They can be irregular or regular.
rate this drawing 1-1000
Answers
A person is receiving oxygen. When measuring temperature, you cannot use the. A. Oral site. B. Rectal site. C. Axillary site. D. Tympanic membrane site.
Answers
When measuring temperature in someone receiving oxygen, the oral, rectal, and axillary sites cannot be used. Instead, the tympanic membrane, or ear canal, site should be used to measure the patient's temperature.
Correct option is A, B, and C.
The tympanic membrane site offers a reliable alternative to traditional temperature measurement sites. The tympanic membrane is located in the ear canal and has a thin, easily accessible surface. This site is not affected by external factors such as food, beverages, changes in the environment, or even oxygen levels. Therefore, the tympanic membrane is the best alternative for measuring temperature in someone receiving oxygen.
Additionally, the tympanic membrane site is particularly useful for those who are uncomfortable having their temperature taken in the traditional oral, rectal, or axillary sites. For example, infants and young children can be less cooperative when having their temperature taken in these areas, but the tympanic membrane site is a more comfortable approach.
Correct option is A, B, and C.
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Can someone please Help me,Thank u!
Answers
Answer:
Explanation:
1. Stars form deep inside clouds of gas and dust. A cloud of gas and dust is a Nebula (plural - Nebulae). Star forming nebulae are cold, dense, and dark. Gravity causes the densest parts to collapse, forming regions called protostars.
2.Gravity
3.STAR FORMATION Star formation happens when part of a dust cloud begins to contract under its own gravitational force; as it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. ... Interstellar cloud starts to contract, probably triggered by shock or pressure wave from nearby star.
4.As the protostar gains mass, its core gets hotter and more dense. At some point, it will be hot enough and dense enough for hydrogen to start fusing into helium. It needs to be 15 million Kelvin in the core for fusion to begin. When the protostar starts fusing hydrogen, it enters the "main sequence" phase of its life.
5. Gas and Dust in Space, the most massive reservoirs of ... Close-up of the Orion Nebula in Infrared and Visible Light. ... the material in the neighborhood of the new stars is blown away into interstellar space. ... material, and a newly formed star, surrounded by a disk, becomes observable.
Answer:
1. Stars form deep inside clouds of gas and dust. A cloud of gas and dust is a Nebula (plural - Nebulae). Star forming nebulae are cold, dense, and dark. Gravity causes the densest parts to collapse, forming regions called protostars.
2.Gravity
3.STAR FORMATION Star formation happens when part of a dust cloud begins to contract under its own gravitational force; as it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. ... Interstellar cloud starts to contract, probably triggered by shock or pressure wave from nearby star.
4.As the protostar gains mass, its core gets hotter and more dense. At some point, it will be hot enough and dense enough for hydrogen to start fusing into helium. It needs to be 15 million Kelvin in the core for fusion to begin. When the protostar starts fusing hydrogen, it enters the "main sequence" phase of its life.
5. Gas and Dust in Space, the most massive reservoirs of ... Close-up of the Orion Nebula in Infrared and Visible Light. ... the material in the neighborhood of the new stars is blown away into interstellar space. ... material, and a newly formed star, surrounded by a disk, becomes observable.
Explanation:
4. Friction _________moving things and turns motion energy
into _________.
5. In _________ there is almost no friction.
6. Your fingerprints are necessary for you to _________ things.
7. Friction comes from _________.
8. The more electrons repel each other the _________friction there is.
9. When skis or skates slide over ice or snow the friction creates a layer of _________which _________.
Answers
Answer:
4. Slowsdown, Heat
5.Space
6.Pick up
7.Electrons
8.Less
9.Water, reduces
The __________ nerve connects with the auditory nerve to relay information to the brain about balance. a. cochlear b. vestibular c. optical d. kinesthetic please select the best answer from the choices provided a b c d
Answers
Answer:
Kinesthetic
Explanation:
Even with your eyes closed you can tell where your limbs are located and in which direction you are going, thanks to the kinesthetic nerve.
Answer:
B. Vestibular
Explanation:
edge 2022
Which of the following statements describes the structure of the plasma membrane?
a It is a lipid bilayer with the hydrophobic area pointing inward, and the hydrophilic area facing outward.
b Protein molecules make up the membrane, which makes it a strong structure.
c The plasma membrane is made mainly from carbohydrates that give the cell energy.
d It is made primarily of cholesterol that allows the cells to communicate with others.
Answers
Answer:
A. It is a lipid bilayer with the hydrophobic area pointing inward, and the hydrophilic area facing outward.
Explanation:
The plasma membrane (also known as the cell membrane) is a membrane that separates the cell's interior from the environment that surrounds it, protecting it. It consists of lipids, proteins, and carbohydrates.
Its main component are phospholipids that create a bilayer. Phospholipids consist of two hydrophobic tails and a hydrophilic head and are arranged so that the tails face inward and the heads outwards.
This is why option A is the correct one.
You can see an image of the cell membrane's structure to help you visualize this below:
Which of the following provides evidence to support the continental drift theory?
Mapping of the ocean floor using sonar shows plates moving apart
Shape of continents look like puzzle pieces that can fit into one another
Spreading apart of the seafloor at the divergent boundary of the mid-ocean ridge
Symmetrical pattern of magnetic stripes in the crust on both sides of the mid-ocean ridge
Answers
Answer:
shapes of the continents look like puzzle pieces that can fit into one another
Answer:
A
Explanation:
Describe how science can have an effect on society.
Answers
Answer:
The science is very important in the evolution and the improvement of the lifestyles of the human being. The researches in the sciences help in providing conclusions, which are helpful in day to day life. The technologies and innovations make life easier by providing various tools and techniques. Also, the researches in the science provide chance to improve lifestyle by providing scientific knowledge to improve the ethics, education, justice, aesthetics etc.
Explanation:
Brainliest please!
Where would you find DNA in plant and animal cells?
Answers
Answer:
Some DNA is present within the mitochondria of animals, plants, and fungi and within the chloroplasts of plants.
Explanation:
A in Bio last year.
Answer:
The DNA is located in the Nucleus in both plant and animal cells
conservative estimates indicate that well over ninety percent of all organisms that have ever lived on the planet are now extinct. conversely, there is a tremendous amount of biodiversity that exists today, as 1.7 million species have been described by science thus far, and yet this is a small percentage of the actual number of species currently alive. how can we reconcile these two facts?
Answers
Conservative estimates suggest that over 90% of all organisms that have ever lived are now extinct, while simultaneously, there is remarkable biodiversity with 1.7 million species described by science, representing only a small fraction of existing species. Reconciling these two facts involves understanding the evolutionary process and the immense timescale of Earth's history.
Over millions of years, species undergo adaptation and diversification, driven by natural selection, leading to the vast biodiversity we see today. Extinction events, such as climate change or natural disasters, contribute to the high percentage of extinct organisms. However, these events also open up new ecological niches, allowing the survivors to adapt and thrive.
Moreover, the sheer amount of time Earth has existed allows for numerous species to emerge, evolve, and go extinct. With constant speciation and extinction events, a considerable number of extinct organisms is expected, while simultaneously allowing for present-day biodiversity.
Thus the high extinction rate and existing biodiversity can be reconciled through understanding the dynamics of evolution, the impact of extinction events, and the vast timescale of Earth's history.
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Calcium and phosphate are important parts of the bone matrix because they:
A provide flexibility to bone.
B promote the formation of cartilage.
C provide strength and durability to bone.
D produce blood cells in the bone marrow.
Answers
Answer: it’s c
Explanation:
Answer: provide strength and durability to bone.
Explanation:
a technologist performing an antibody identification in the blood bank has recorded the following results found in the worksheet below. which antibody(ies) are most likely the cause of the agglutination reactions?
Answers
IgG or IgM antibodies are most likely the cause of the agglutination reactions.
In general, Agglutination reaction occurs when an insoluble or particle antigen come in contact with an antibody. Thus , a positive reaction occurs and can be seen macroscopically in a short time. antigen-antibody complex may be seen with our eye if the complex size is large. Both IgG or IgM could be involved in the agglutination reaction.
Their are two types of agglutination active agglutination or the passive agglutination. In case of active agglutination, the antigen occurs naturally on particle. on the other hand on passive agglutination, the antigen is bound to an inert particle to detect an antibody.
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Some proteins can bind to other proteins only after phosphorylation. Which bond or force is likely important for binding to occur after, but not before, phosphorylation?.
Answers
Hydrophobic clustering is the main force drives the folding of protein, while the hydrogen bond and ionic bond are responsible for maintaining the stable structure of protein.
The hydrophobic effect refers to a nonpolar molecular surface's energy tendency to connect with other nonpolar molecular surfaces and consequently push water molecules away from the interacting surfaces. When hydrophobic molecules or moieties interact with a hydrophilic environment, such as when oil droplets clump together in water, the phenomenon is known as the hydrophobic effect.Both enthalpic and entropic effects contribute to the hydrophobic effect. Short-range attractive interactions known as hydrophobic interactions play a significant role in the binding affinities between ligands and receptors. Although less geometrically limited than hydrogen-bonding interactions, they nonetheless contribute to specificity.To know more about hydrobobhic check the below link:
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What differentiates Hela cells from other human cells?
Answers
Answer:
a normal cell contains 46 chromosomes whereas HeLa cells contain 76 to 80 (ref) total chromosomes, some of which are heavily mutated (22-25), per cell.
Explanation:
The main difference between Hela cells from other human cells is that a normal cell contains 46 chromosomes whereas HeLa cells contain 76 to 80 (ref) total chromosomes, some of which are heavily mutated (22-25), per cell.
What happens when the involvement of hela takes place?The involvement of hela made to the developing field of genetics is a lot was educated about cell reproduction, DNA and mapping genetics. The hela cells prepared them ideal for use in the polio vaccine trials because they were more liable than other cultured cells.
Cancer cells such as Hela cells escape to normal cell cycle by mutations that lead to the misexpression and/or overexpression of regulatory molecules (e.g., cyclins and cyclin-dependent kinases) and faulty checkpoint control of the cell cycle.
The control of the cell cycle depends on 1-cyclins and cyclin-dependent kinases (CDKs) that regulate the cell cycle by a cascade of protein phosphorylations and 2- a group of checkpoint controls that monitor the completion of critical cellular events.
Therefore, The main difference between Hela cells from other human cells is that a normal cell contains 46 chromosomes whereas HeLa cells contain 76 to 80 (ref) total chromosomes, some of which are heavily mutated (22-25), per cell.
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Which part of a city is most like a lysosome
Answers
Answer:
The lysosomes would be the recycling and waste disposal center in cell city.
Explanation:
What inference is best supported by the data in the graph?
Answers
Answer:
not enough info
Explanation:
Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece of used gum. The gum flattens and sticks to her shoe. When she lifts her foot, she sees long strings of gum between her shoe and the sidewalk. She thinks, “What a great demonstration of the properties of metals!”
What properties of metals would Mrs. Franklin most likely teach about with this demonstration?
conductivity and luster
ductility and malleability
malleability and reactivity
conductivity and ductility
Answers
Answer: Ductility & malleability
Explanation: Ductility is the capability of a material to be deformed or molded without breaking and malleability the ability for a material to be reshaped without breaking. Stepping on gum exemplifies both qualities.
Answer:
malleability and reactivity
what is the term for a structure that has no use in an organism?
A) homologous
B) Index
C) Vestigial
D) Sedimentary
Answers
Answer:
c) vestigial
Explanation:
vestigial tend to be largely or entirely functionless
Typically, modified amino acids, those with side chain modifications that are present in proteins A) are synthesized due to genetic mutations. B) are assembled by specialized bacterial enzymes C) are formed by modification of standard side chain residues after the protein is synthesized.
D) are toxic. E) are racemic
Answers
Typically, modified amino acids, those with side chain modifications that are present in proteins, are formed by modification of standard side chain residues after the protein is synthesized.
Here correct option is C.
During or after protein synthesis, certain enzymes can chemically modify specific amino acid side chains to introduce modifications. These modifications can include various functional groups or structural changes to the side chains, expanding the chemical diversity of amino acids in proteins. Examples of modified amino acids include phosphorylated serine or threonine residues, hydroxylated proline, or carboxylated glutamate.
Modified amino acids often play important roles in protein function, regulation, or stability. They can be involved in processes such as enzymatic activity, signaling, post-translational modifications, or structural stabilization.
It's important to note that while modified amino acids are essential for proper protein function, their presence does not necessarily indicate toxicity or result from genetic mutations.
Additionally, modified amino acids are typically not racemic, meaning they are not composed of equal amounts of L and D enantiomers (mirror-image isomers), but instead, they predominantly exist in the L-form in proteins.
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a student analyzing dividing cells of a certain type under the microscope finds that each daughter cell produced contains half the number of chromosomes as its parent cell. given this, cells of this type would most likely contain all of the following except: a. peroxisomes. b. nuclear pore proteins. c. single-stranded genomes. d. microtubule
Answers
Option c is Correct. With the exception of single-stranded genomes, cells of this sort would most likely contain all of the following.
When dividing cells of a certain type are examined under a microscope, the student discovers that each daughter cell has half as many chromosomes as the parent cell. Chemicals released into the PCM by intestinal epithelial cells stimulated the transcription of LEE genes. A cell's nucleus is a tiny, compact substance with a sphere shape.
It is frequently referred to as the "control center" since it manages all cellular functions, including cell division and heredity. The Western blot method is a crucial laboratory procedure for identifying proteins in blood or tissue samples. It aids in the identification of certain protein molecules in a complicated protein mixture.
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If you ate 2 grams of fat, how many
calories would you be eating?
8
9
9000
18
Answers
Answer:18
Explanation:
Of these six nutrients, carbohydrates, protein and fats provide calories. Each gram of carbohydrate and protein yield 4 calories/gram. Each gram of fat yields 9 calories.
Answer: 9
Explanation: 9
what is synaptic integration? what is synaptic integration? adding together all ipsps generated by a single neuron adding together all epsps generated by a single neuron a process by which multiple synaptic potentials combine within one postsynaptic neuron a method of comparing the amplitudes of miniature postsynaptic potentials
Answers
Synaptic integration is the process by which multiple synaptic potentials combine within one postsynaptic neuron. It is a mechanism through which neural information is processed and transmitted.
In the process of synaptic integration, the postsynaptic neuron receives inputs from multiple presynaptic neurons. These inputs are in the form of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs). EPSPs are positive potentials that tend to depolarize the postsynaptic neuron, while IPSPs are negative potentials that tend to hyperpolarize it.
The postsynaptic neuron then combines these inputs, by adding together all EPSPs and IPSPs generated by different presynaptic neurons. The resulting synaptic potentials are then used to determine whether the postsynaptic neuron will fire an action potential or not. Synaptic integration is an essential process in the neural communication and it helps to transmit the complex information between neurons.
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Pls can someone tell me the three cells the left side of the heart pumps blood to.
Answers
The left side of your heart receives oxygen-rich blood from your lungs and pumps it through your arteries to the rest of your body. Your heart has four separate chambers that pump blood, two on the right side and two on the left. How does blood flow through the heart? Blood flows through your heart and lungs in four steps: The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve.
How is polygenic inheritance different from the patterns described by Mendel?
A. In polygenic inheritance, both alleles for a gene are expressed unequally.
B. In polygenic inheritance, both alleles for a gene are dominant.
C. In polygenic inheritance, only one gene affects a trait.
D. In polygenic inheritance, more than one gene affects a trait
Answers
Polygenic inheritance is different from the patterns described by Mendel because in polygenic inheritance, more than one gene affects a trait.
Polygenic inheritance refers to the inheritance of a trait that is controlled by multiple genes. Unlike the patterns described by Mendel, where a single gene with distinct dominant and recessive alleles determines the phenotype, polygenic inheritance involves the contribution of multiple genes to the phenotype of a trait. These genes may interact and combine their effects to produce a wide range of variations in the trait.
In polygenic inheritance, each gene involved may have multiple alleles, and the contribution of each allele is additive. This means that the more alleles for a particular trait an individual possesses, the greater the effect on the phenotype. The combined effect of multiple genes and their alleles results in a continuous variation of the trait rather than distinct discrete categories.
Polygenic inheritance is commonly observed in traits such as height, skin color, and intelligence, where multiple genes influence the outcome. The variation in these traits is often continuous, with a range of intermediate phenotypes observed in the population. This differs from the Mendelian patterns of inheritance, where phenotypes are classified into distinct categories based on the presence or absence of specific alleles.
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for each trait, how many alleles do the gametes carry?
Answers
For each trait, the gametes carry one allele.
During meiosis, chromosome pаirs аre split аpаrt аnd distributed into cells cаlled gаmetes. Eаch gаmete contаins а single copy of every chromosome, аnd eаch chromosome contаins one аllele for every gene. Therefore, eаch аllele for а given gene is pаckаged into а sepаrаte gаmete. For exаmple, а fly with the genotype Bb will produce two types of gаmetes: B аnd b. In compаrison, а fly with the genotype BB will only produce B gаmetes, аnd а fly with the genotype bb will only produce b gаmetes.
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Which set of data is best described as accurate and precise when compared to an accepted value of 125?.
Answers
Answer:
122, 126, 121, 123
Explanation :
Accuracy is defined as the closeness of a measured value to a standard or known value.
For Example:
If the mass of a substance is 66 kg and one person weighed 61 kg and another person weighed 75 kg. Then, the weight measured by first person is more accurate.
Precision is defined as the closeness of two or more measurements to each other.
For Example:
If you weigh a given substance five times and you get 2.5 kg each time. Then the measurement is said to be precise.
Level of precision is determined by the maximum number of decimal places.
As we are given that the actual value is 125. So, 122, 126, 121, 123 are accurate and precise when compared to an accepted value of 125.