Answer:
The particular structure of the influenza virus genome and function of its viral proteins enable antigenic drift and antigenic shift.
Answer:
Between worldwide outbreaks, known as pandemics, influenza viruses undergo constant, rapid evolution (a process called antigenic drift ), which is driven by mutations in the genes encoding antigen proteins.
Antigenic shift is the process by which two or more different strains of a virus, or strains of two or more different viruses, combine to form a new subtype having a mixture of the surface antigens of the two or more original strains. The term is often applied specifically to influenza, as that is the best-known example, but the process is also known to occur with other viruses, such as visna virus in sheep. Antigenic shift is a specific case of reassortment or viral shift that confers a phenotypic change.
Explanation:
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Horace has decided that he is going to do as many push-ups as he can on Monday mornings to see how well his strength building exercises are working. If the number increases, he will know that he is getting stronger. Is this a good strategy?
options:
A. Yes, this is an effective way to monitor strength.
B. No, push-ups are a better indicator of cardio fitness than strength.
C. Yes, but it would be better if he could get his strength professionally measured.
D. No, if he can do more push-ups it just means that he is getting better at push-ups.
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Many people push themselves to the limit of 300 times every day. But if done properly, even 50 to 100 push-ups should be enough to maintain a strong upper body for the average person. Thus, option A is correct.
What are the benefits of doing push-ups daily?Start with 20 push-ups, but don't limit yourself to that number. It's decisive to continually lifting the amount to keep your body guessing.
Push-ups done the old-fashioned way are good for developing upper body strength. They exercise the shoulders, pectorals, and triceps.
By contracting (drawing in) the abdominal muscles, they can also strengthen the lower back and core when done with perfect technique. Push-ups are a simple and powerful exercise for increasing your strength.
Therefore, Yes, this is an effective way to monitor strength.
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Which can modern taxonomy do?
design tables based on physical characteristics
compare the length of DNA among members of a species
compare the length of RNA among members of a species
distinguish how closely related organisms are
Modern taxonomy can be used to distinguish how closely related organisms are. It is a branch of systematics used to classify organisms based on different phenotypic traits and characteristics.
Taxonomy is a system of identifying and classifying biological systems.
Modern taxonomy refers to the system of classification of organisms on the basis of their evolutionary relationships (i.e., its basis involves phylogeny).
Modern taxonomy takes into consideration empirical evidence from different fields of study (e.g., morphology, cytology, physiology, etc).
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Answer:
D is the answer :)
Explanation:
took the test on edge
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does an object need to able to perform all characteristics of life? Why or why not?
The two strands that make up the DNA double helix are said to be antiparallel. What does that mean?
Nucleotides containing adenine base pair with nucleotides containing thymine.
The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand.
Base pairings create unequal spacing between the two DNA strands.
Answer:
The 5' to 3' direction of one strand runs counter to the 5' to the 3' direction of the other strand.
Explanation:
Antiparallel strands of a DNA molecule means that the phosphate groups at the start of two DNA strands are in opposite position (pole).
The DNA molecule is composed of two strands held together by hydrogen bonds. A single strand is different at its two ends. One end is called 5' (5 prime), the other is called 3' (3 prime). The names come from the notation for the two sugar carbon atoms which participate in the phosphodiester bonds. The different strands in the helix run in opposite (anti-parallel) directions. At each end of the double helix, one strand is 5' and the other is 3'.
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prokaryotic cells and eukaryotic cells similarities
Answer:
Three similarities between prokaryotic and eukaryotic cells are that both have vesicles, vacuoles, and the ability to carry out the eight functions of life. Prokaryotes do not have organelles.
Explanation:
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Organisms that show similar patterns of growth while they are in the embryonic stage have what type of homology?
Answer:
Developmental Homology.
Explanation:
Answer:
Development Homology
Explanation:
Comparing the embryos of different animals can show relationships that can't be seen when comparing the fully formed animals.Evidence of an evolutionary common ancestor is seen in the similarity of embryos in markedly different species. Darwin used the science of embryology to support his conclusions. Embryos and the development of embryos of various species within a class are similar even if their adult forms look nothing alike.
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priming based on specific expectations about the identity of the upcoming stimulus produces
Answer:
a benefit for processing if the expectations are correct, but slows processing
if the expectations are incorrectl
what is the function of cartilage located in the epiphyseal plates
Answer:
Explanation:
Epiphyseal cartilage is hyaline cartilage tissue with a gelatinous texture, and it is responsible for the longitudinal growth of the long bones in birds and mammals. It is located between the epiphysis and the diaphysis. Epiphyseal cartilage also is called a growth plate or physis
what’s the correct choice?
bio
Answer:
There is no way to produce tall offspring since both parents are homo-zygous recessive.
Explanation:
parent plants are short because neither of them has at least one dominant "S" gene. As both of them have recessive "s" genes, they are scientifically known as homo-zygous recessive organisms. So produced offspring will never be tall as they don't have the dominant "S" gene transmitted from their parents. this is genotypically expressed as below.
offsprings: s1 s1, s1 s2, s1 s2, s2 s2
which of these describes the structure of a nucleic acid
c. A hydrophilic head containing a glycerol and two hydrophobic tails
2. How much does the average baby weigh when bom?
Answer:
4 to 5 kg
not very certain in pounds 1b)
Answer:
8lb 6oz
Explanation:
8 pound 6 ounce for an average baby in BritainHELP PLS!
What are the nitrogenous bases in RNA? Which pair together?
Answer:
he four bases that make up this code are adenine (A), thymine (T), guanine (G) and cytosine (C). Bases pair off together in a double helix structure, these pairs being A and T, and C and G. RNA doesn't contain thymine bases, replacing them with uracil bases (U), which pair to [tex] {adenine}^{1} [/tex].
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What is the name of the process that is cell division for the cells involved in reproduction (sperm cells in male organisms and egg cells in female organisms)?
cytokinesis
replication
meiosis
mitosis
Answer:::::::::::: Meiosis………
Answer:
replication or mitosis
Drag the tiles to the correct boxes to complete the pairs
Potential energy is involved in each of these events. Match each event with its source of potential energy
a trampoline expands and contracts from
the weight of children
a chemical substance reacts with water to
give off heat
a skydiver jumps from a plane and free-falls
toward the ground
eravitational potential energy
elastic potential energy
chemical potential energy
Answer:
Refer to image
How can so much information be stored in DNA when there are only four different bases
Answer:
4 bases are G, A, C, and T
Explanation:
The [blank] structures of the cytoskeleton would show the same patters of microtubules as a flagellum?
Answer:
I believe the answer would be cilia
Explanation:
bacteria with rod-shaped cells connected end-to-end are called _________.
Answer:
A bacillus (plural bacilli), or bacilliform bacterium, is a rod-shaped bacterium or archaeon. Bacilli are found in many different taxonomic groups of bacteria
Explanation:
Hope this helps.
Answer:
bacilli
Explanation:
You just studied 27 terms! 1/27.
what type of immunity can be transferred by bodily fluids from one person to another, thus conferring immunity to the recipient?
What is meant by a phenotype ratio in a Punnett square?(1 point)
the number of genes that are possible in offspring
the fraction of possible offspring that contain a certain allele in their genes
the fraction of possible offspring that can be observed to have a trait
the number of alleles in possible offspring
✌️
Answer:
The fraction of possible offspring that can be observed to have a trait.
Explanation:
Just took the test. So yea hope it helps
The observable trait appearing probability for cross-breeding is the phenotype ratio in a Punnett square.
What is cross-breeding?The act of creating offspring, particularly through the mating of two purebred individuals who are from different breeds, variations, or even species, is known as crossbreeding. The practice is specifically referred to as designer crossbreeding because it is typically done with the intention of developing offspring that would acquire desired qualities of the parent lineages. Breeders frequently engage in this approach, particularly when the intended qualities will be advantageous to the progeny, such as when its biological fitness is improved.Hybridization and crossbreeding are sometimes used interchangeably. But specifically, hybridization is the act of creating hybrid offspring by mating two parents from different species.To learn more about cross-breeding, refer to
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When do plants make the most sugar?
Answer: All green plants make sugar through photosynthesis, the process plants use to transform the sun’s energy into food.
Explanation:
Answer:
Both photosynthesis and respiration occur within plant cells. During the day, photosynthesis is the dominant process in plants. This means that the plant produces more glucose than it uses during respiration. At night, or in the absence of light, photosynthesis in plants stops, and respiration is the dominant process.
Explanation:
what is the highest level of organization that ecologists study
What do people with Glycogen Disorder Disorder need to do in order to maintain a normal blood glucose?
the muscles and organs need a certain level of glucose in the blood to work properly. When the body is missing an enzyme or has a flawed enzyme and is not able to use glycogen the right way, it leads to a condition called glycogen storage disease (GSD). Many different enzymes are used by the body to process glycogen.
1. Bacteria reproduce rapidly through binary fisson
2. A parent bacterial cell is able to survive in the presence of the antibiotic penicillin. Subsequent
generations from this parent will be _vulnerable to penicillin
3. Something that potatoes and bacteria have in common is that they both reproduce through
asexual reproduction
4. In asexual reproduction, DNA from the parent cell
before it produces daughter
cells.
Bacteria are single-celled prokaryotic microscopic organisms that replicate via binary fission.
Bacteria:
They are single-celled prokaryotic microscopic organisms.
They reproduce through binary fission.Binary fission is an asexual mode of reproduction.Some bacteria have the ability to grow even in the presence of antibiotics.In asexual reproduction DNA of the parent cell, replicates before division.Therefore, bacteria are single-celled prokaryotic microscopic organisms that replicate via binary fission.
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Which statement correctly describes how energy is made in photovoltaic cells and how energy is made in photosynthesis?
A.photovoltaic cells can only make energy that does not need light for photosynthesis can only make energy that needs light.
B.photovoltaic cells in photosynthesis can make energy that need light and energy that does not need light. C.photovoltaic cells need light to make energy by photosynthesis to make energy that needs light and energy that does not need light. D.photovoltaic cells can make energy that need light in energy that does not need light for photosynthesis can only make energy that does not need light
Both photosynthesis and photovoltaic cells need light in order to produce energy, though photosynthesis does have a process that can occur in the absence of light, so option C is correct.
Photovoltaic cells are man-made panels that use solar light to create energy. They do this by taking advantage of the natural ability of some materials to absorb the photons in sunlight and use them to release electrons. The release of electrons generates an electric current which produces energy.
Meanwhile, photosynthesis is a naturally occurring process by which plants and a handful of other organisms produce energy. Photosynthesis also requires the presence of sunlight to function. However, photosynthesis also has a dark phase where the chemical reactions continue despite the absence of light. For these reasons, option C is correct whilst the rest are false.
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Answer:
The Photovoltaic cells need light to make energy, while photosynthesis can make energy that needs light and energy that does not need light.
Explanation:
if a star is contracting which force is greater?
Answer:
Before a star reaches the main sequence, the star is contracting and its core is not ... When that happens, the star can no longer hold up against gravity.
: )
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Which statement describes how diffusion works?
Molecules always move from inside of the cell to outside of the cell.
Molecules always move from areas of high concentration to low concentration.
Molecules always move from areas of low concentration to high concentration.
Molecules always move from of outside the cell to inside of the cell.
Answer:
2. Molecules always move from areas of high concentration to low concentration.
Explanation:
Answer:
B. Molecules always move from areas of high concentration to low concentration.
Explanation:
Trust me, this is right.
what is the order of the distances of the terrestrial planets from the sun, from farthest to closest?
Answer:
The order of planets from closest to farthest from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
what is a sequence of growth, replication, and division that produces new eukaryotic cells called?
which stage of mitosis is characterized by the disintegration of mitotic spindles and the formation of two new nuclear membranes?
Answer:
telophase
Explanation:
the last stage of mitosis
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