Answer:
splits into two or more genetically distinct descendant populations
Explanation:
New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations. Speciation involves reproductive isolation of groups within the original population and accumulation of genetic differences between the two groups
HELP ME PLEASEEE
1. What percentage of the offspring will be heterozygous?
2. Why does each parent contribute only one allele to the offspring?
Answer:
1. 50% from the picture as they are Aa which means they are heterozygous and AA mean dominant and aa means ressecive.
2. Because alleles are segregated during meiosis when homologous chromosomes are separated.
Explanation:
Hope this make helps you to understand :)
Non examples of cell cycle
Summarize the lytic cycle. (1 point)
The viral DNA incorporates itself with the host cells and replicates whenever the host cell replicates itself.
A virus copies its genetic material and then splits its cell membranes in half to form identical viruses.
A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.
A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
Answer: A virus injects its genetic material into the host cell, copies itself using the host's structures and resources, and then forms new viruses that burst out of the host cell
The lytic cycle is one of the two main life cycles of viruses, the other being the lysogenic cycle. In the lytic cycle, a virus infects a host cell and hijacks its cellular machinery to replicate and produce new virus particles, or virions.
The correct option is D .
The lytic cycle is rapid and results in the destruction of the host cell. It is often associated with acute infections, where the symptoms of the infection are more severe and appear relatively quickly. Examples of viruses that follow the lytic cycle include the flu virus (influenza), the common cold virus (rhinovirus), and many bacteriophages that infect bacterial cells.
The lysogenic cycle, on the other hand, is characterized by the integration of the viral genetic material into the host cell's genome, allowing the virus to remain dormant for a period before switching to the lytic cycle.
Hence , D is the correct option
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Can someone explain what polymers, monomers, and isomers are to me? What is the difference between isomers and polymers? Thanks, I'm studying for a test in about a week :)
Answer:
A monomer is a single unit of a substance (eg. Amino acid). A polymer is a chain of monomers (eg protein). An isomer is a molecule of an element with the same chemical formula but a different chemical structure (sucrose and maltose).
Explanation:
Changes in water pressure within guard cells cause the cells to open or close the stomata. This response helps the plant maintain homeostasis by
Answer:
reduced water loss
Explanation:
When the water enters the cells, they swell and become bowed. This causes the guard cells to bend away from each other, thereby opening the stomata. Conversely, when guard cells lose potassium ions, water diffuses out of the cells by osmosis.
The response helps the plant maintain homeostasis by regulating water levels that plants lose during transpiration.
What is cellular homeostasis?The expression cellular homeostasis makes reference to the processes by which an organism maintains an internal state of equilibrium.
Cellular homeostasis is fundamental for the survival of the cell and the organism.Cellular homeostasis in this case indicates the mechanism to maintain concentration and gradients used by the plant to carry out metabolic functions.In conclusion, the response helps the plant maintain homeostasis by regulating water levels that plants lose during transpiration.
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A scientist carried out an experiment to follow the movement of carbon atoms within animal cells. To do this, the scientist added glucose with radioactively labeled carbon atoms to a culture of cells growing in a Petri dish.
After a certain amount of time had passed, the scientist tested parts of cells for radioactivity. Radioactivity was detected in various biomolecules, including DNA.
Which of the following statements best explains why radioactivity was detected in the DNA?
Choose 1 answer:
(Choice A)
The DNA was in close proximity to the radioactive glucose during its formation.
(Choice B)
Carbon atoms that were once in the radioactively labeled glucose were used to form DNA.
(Choice C)
The DNA was made up of radioactively labeled glucose subunits.
Carbon atoms that were once in the radioactively labeled glucose were used to form DNA - this statement best explains why radioactivity was detected in the DNA.
What is radioactivity in DNA?Radioactivity is known to induce tumors, chromosome lesions, and minisatellite length mutations.
Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions.
The radiation could damage the cell’s DNA, but the DNA repairs itself. The radiation could prevent the DNA from replicating correctly. The radiation could damage the DNA so badly that the cell dies.
The correct answer is option B.
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Answer:
the answer is b - carbon atoms that were once in the radioactively labeled glucose were used to form DNA
hope this helps! <3
5. One reason that viruses are harmful to living cells and classified as pathogens is that they-
A cause organisms to produce daughter cells through the process of mitosis
B stimulate the production of ATP in mitochondria within host cells
C damage the cells used in the production of new virus particles
Dreduce the amount of cholesterol in the blood of people with heart disease
When would a point mutation occur?
It can occur before and after cell division
Before the cell divides
After the cell divides
Before DNA replication
Answer:
The correct answer is option 1. Before and After Cell Division
Explanation:
Point mutations are frequently the result of mistakes made during DNA replication, although modification of DNA, such as through exposure to X-rays or to ultraviolet radiation, also can induce point mutations. But they may also occur after as well as before the division of a cell.
the human lineage began to diverge from those of other primates about
Plz help quickly I’ll mark
Answer:
Carbon Monoxide
Explanation:
I just took the test :)
what part does chlorophyll play in photosynthesis?
Answer:
Explanation:
Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar
These are
inorganic materials needed in small amounts
O Proteins
0 Vitamins
Water
0 0
Fats
well water would be the only possible answer
Help with biology plzz USA test prep
Answer:
see below
Explanation:
amplification: MUTATION = a type of mutation
independent assortment: MENDELIAN = how different
genes independently separate from one another
when reproductive cells develop
nondisjunction: MUTATION = a type of chromosomal
mutation
translocation: MUTATION = another type of chromosomal
mutation
codominance: MENDELIAN = a relationship between two
genes where neither allele is recessive and both
are expressed
insertion: MUTATION = a type of mutation
radiation: MUTATION = causes mutations
virus: MUTATION = causes mutations as the virus
replicates
deletion: MUTATION = a type of mutation
law of dominance: MENDELIAN = one of Mendel's laws
of inheritance
sex linked traits: MENDELIAN = linkage is an exception
to Mendel's law of independent assortment
incomplete dominance: MENDELIAN = when none of the
factors of a gene is dominant and there is a blend,
such as a red flower crossed with a white flower
turns out pink
law of segregation: MENDELIAN = one of Mendel's laws
of inheritance
substitution: MUTATION = a type of mutation
Which of the following adaptations helps alpine animals survive the cold winter? a. Reduced lung size b. Low levels of hemoglobin c. Hibernation d. Large legs, ears, and tails.
Hibernation is an adaptation that helps alpine animals to survive the cold winter. Hibernation helps to store energy.
Hibernation is an adaptation that helps to store energy by decreasing the metabolic rate.
This adaptation (hibernation) is observed in animals living in extremely cold conditions (e.g., alpine animals).
The hibernation adaptative strategy is characterized by an excessively low temperature in the body, slow breath rate, slow beats (heart rate), and low metabolic rate.
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Answer:
C
Explanation:
Edge 2021 trust
pushing your body to its limits to encourage your body to make physiological changes describes which principle?
what is the powerhouse of the cell?
Answer:
Mitochondria are responsible for respiration
Answer:
I believe it's mitochondria
One of the end products of cellular respiration is ATP, which is the molecule that cells use for energy. How is ATP produced during cellular respiration.
Answer:
The breaking down of glucose into energy (Which is ATP).
Explanation:
Answer:
36 ATP molecules are created from cellular respiration in eukaryotic cells
Explanation:
The ____________ is a muscular dome that forms the inferior boundary of the thorax, separating the thorax from the abdomen.
Answer: the answer is diaphragm
The periosteum and the endosteum are both membranes.
a.
True
b. False
How do you think astronomers group planets?
Answer:
They group them biased off of similar traits and there orbital paths.
Explanation:
I hope this helped ^ ^
draw the flow chart showing the sequential order of reproductive stage and fertilization
The sequential order of reproductive stage and fertilization starts with the
male and female sex cells being produces through meiosis. The male sex
cell which is the sperm is produced in the testes while the female sex cell
which is the egg is produced in the ovary.
During copulation, the sperm cells are released into the vagina which then
swims through the cervix and uterus to the fallopian tubes where the
fertilization occurs.
There is then movement of the zygote formed from the fertilization to the
uterus where development occurs.
Please refer to the attachment .
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Label the following with
N (neutron), P (proton),
E (electron)
___Negative charge
___ Atomic number ___determination
___ Atomic mass determination
___ Involved in bonding
___ Positive charge
___ when gained or lost creates ions
___ Neutral charge
___ Found in nucleus
Answer:
E, P, N and P, E, P, E, N, N and P
Explanation:
I am pretty sure the answers would go like this (in the order you have here):
1. Electron (they have a negative charge)
2. P (The atomic number is determined by the number of protons)
3. N and P (The atomic mass is determined by how many Neutrons and Protons there are in the atom)
4. Electron (they are usually involved in bonding)
5. Proton (they have positive charge)
6. Electron (ions are created when an atom has gained or lost electrons)
7. Neutron (they are neutral)
8. Both Neutrons and Protons (they stick together inside the nucleus)
I am not entirely sure why the atomic number determination has 2 blanks since it is only determined by protons, but I hope this helps. I havent studied this for a while but those are the best answers I can provide and have checked them with my books so I hope they are correct. Good Luck!
Dragon
which test measures the flexibility of the lower back and hamstrings
Answer:
The Sit and Reach Test
Explanation:
The Sit and Reach Test is one of the linear flexibility tests which helps to measure the extensibility of the hamstrings and lower back. It was initially described by Wells and Dillon in 1952 and is probably the most used flexibility test.
The plasma membrane of the cell consists of
Answer:
phospholipid bilayer
Explanation:
this includes:
- head (hydrophilic)
- tail (hydrophobic)
<3 hope this helps!
What is the NADPH responsible for?
Answer:
NADPH is a cofactor, used to donate electrons and a hydrogens to reactions catalyzed by some enzymes.
What kind of selection occurs in many birds when males that build strong nests and help care for young are chosen by females and mates
Which of these greetings is written and punctuated correctly for a personal letter?
What 3 factors influence the rate of photosynthesis?
Hi, what is the Calvin cycle or light-independent reaction, and what is the light-dependent reaction? pls, explain what happens on the stage.
Answer:
The Calvin Cycle is a process used by plants to turn Carbon Dioxide from the air into Sugar. Sugar is the food that autotrophs need to grow.
The light dependant reaction is
The reaction which depends on sun light and ends right after light goesLike NADPH formation
Which object has the most gravitational pull?
Answer:
Jupiter, the fifth planet from the Sun, has the strongest gravitational pull because it's the biggest and most massive.
Explanation:
Answer:
Jupiter
Explanation: