Answer:
Fraternal twins are also called dizygotic twins. And the difference between fraternal and identical twins is that fraternal twins derive from two different eggs. Fraternal twins may be the same gender, they may have many of the same characteristics, but also may be very different from each other and, in fact, share half of their genes just like their sisters and brothers. It's important to recognize that the difference between fraternal twins and monozygotic, or identical twins, is that monozygotic twins result from the fertilization of a single egg with a single sperm and then during the embryonic development, or during the cell splits, those massive eggs split into two individuals, which later develop into two offspring.
hope this helps sorry if it doesn't
Amphibians, such as frogs, have adapted to have thin, very permeable skin that is well supplied with blood vessels. How does this adaptation most likely help amphibians survive in aquatic environments?
A. It allows them to maintain fairly stable internal temperatures.
B. It allows them to absorb nutrients directly from their environment.
C. It allows them to release chemicals into their environment to attract mates.
D. It allows them to take in oxygen and release carbon dioxide through their skin.
Answer:
to allow easier gas exchange
Explanation:
describe 2 ways that mitosis is important for your body.
Answer: your cells are extremely hard
Explanation:
Which is not a source of carbon dioxide gas?
Answer:oxygen.
Explanation: Photosynthesis does not produce carbon dioxide. It takes up carbon dioxide and water and releases oxygen.
How does your body respond to an increase in the need for energy----why would you need more energy?
Your body circulates more blood and your heart beats faster.
You need more energy to do activities that take more effort.
pls give brainliest.
true or false? local biogeochemical cycles are isolated within their particular ecosystem and all ions and molecules remain in that ecosystem permanently.
Students place a plant in a dark, windowless closet for two days. Which of these will help the plant maintain homeostasis?
a
decreasing stem size
b
losing all of its leaves
c
using stored sugars
d
growing deeper roots
Answer:
use stored sugar for energy
Please help!! What are Okazaki fragments?
Explanation:
Okazaki fragments are short sequences of DNA nucleotides (approximately 150 to 200 base pairs long in eukaryotes) which are synthesized discontinuously and later linked together by the enzyme DNA ligase to create the lagging strand during DNA replication.[1] They were discovered in the 1960s by the Japanese molecular biologists Reiji and Tsuneko Okazaki, along with the help of some of their colleagues
During DNA replication, the double helix is unwound and the complementary strands are separated by the enzyme DNA helicase, creating what is known as the DNA replication fork. Following this fork, DNA primase and DNA polymerase begin to act in order to create a new complementary strand. Because these enzymes can only work in the 5’ to 3’ direction, the two unwound template strands are replicated in different ways.[2] One strand, the leading strand, undergoes a continuous replication process since its template strand has 3’ to 5’ directionality, allowing the polymerase assembling the leading strand to follow the replication fork without interruption. The lagging strand, however, cannot be created in a continuous fashion because its template strand has 5’ to 3’ directionality, which means the polymerase must work backwards from the replication fork. This causes periodic breaks in the process of creating the lagging strand. The primase and polymerase move in the opposite direction of the fork, so the enzymes must repeatedly stop and start again while the DNA helicase breaks the strands apart. Once the fragments are made, DNA ligase connects them into a single, continuous strand.[3] The entire replication process is considered "semi-discontinuous" since one of the new strands is formed continuously and the other is not.[4]
[2]During the 1960s, Reiji and Tsuneko Okazaki conducted experiments involving DNA replication in the bacterium Escherichia coli. Before this time, it was commonly thought that replication was a continuous process for both strands, but the discoveries involving E. coli led to a new model of replication. The scientists found there was a discontinuous replication process by pulse-labeling DNA and observing changes that pointed to non-contiguous replication.
Answer:
but actually hope is going to read all of this
Explanation:
lol
Which situation would increase the fluidity of a
phospholipid bilayer?
A. decreasing the temperature
B. increasing the number of proteins
C. increasing the number of cholesterol molecules
D. increasing the number of unsaturated fatty acids
Answer:
C
Explanation:
Cholesterol molecules stay in between fatty acid tails preventing them from sticking together
The situation that would increase the fluidity of the phospholipid bilayer is increasing the number of cholesterol molecules. The correct option is C.
What is a phospholipid bilayer?A phospholipid bilayer is a layer around a cell. The cell membrane is composed of a bilayer of phospholipids. It contains fatty acids and alcohol.
Bilayers of phospholipids are essential parts of cell membranes. The lipid bilayer serves as a physical barrier to the entry and exit of molecules and ions from the cell. However, allowing the selective transit of specific substances into and out of cells is a crucial role of the cell membrane.
Cholesterol is present between fatty acid molecules and prevents them from sticking to each other.
Therefore, the correct option is C. increasing the number of cholesterol molecules.
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Explain what is wrong with the cells shown in the image below.
Answer:
wrong answer
Explanation:
it doesn't show any thing that why its wrong
A classmate states that both energy and matter can be created during photosynthesis and cellular respiration. Is this true? Explain
Energy and matter are also produced during photosynthesis.Chemical energy in the form of glucose and matter in the form of oxygen gas are produced during photosynthesis.Since these are the results of the reaction, they are regarded as process outputs.
Can both energy and matter be created during photosynthesis?
Some cells employ a process called photosynthesis to convert light energy into food.Because it enables plants to produce the food required for the rest of the ecosystem, photosynthesis is crucial.Producing organisms, or those that grow their own sustenance, are plants.The foundation of the ecosystem is formed by producers, who transform solar energy into chemical energy in the form of food for themselves and other ecosystem inhabitants.Although many ecosystems are dominated by plants, other organisms are also capable of photosynthesis.Some bacteria and algae are capable of photosynthesizing, and these organisms are the producers in their ecosystem. A biological process called photosynthesis consumes both matter and energy.The world's physical components are made of matter.The capacity to perform work is energy.By use of various mechanisms, matter and energy can be switched for one another.On the other hand, neither matter nor energy can be generated nor destroyed.The first law of thermodynamics is that they constantly evolve into new forms.All processes in the universe operate in this manner.Energy can be transformed into a variety of forms.Several instances include:Chemical drivekinetic energythe potential energy of gravityelastic force The substance and energy persist even after an organism dies.Instead, they are changed into other forms.For instance, both matter and energy are components of plants.Fungi and bacteria in the soil aid in the breakdown of a plant's internal substance into its constituent parts when it dies.These can be used by newly sprouting plants by being recycled into the soil.As a result, neither the energy nor the substance is wasted; rather, they are transformed into new forms.To learn more about photosynthesis refer
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what is the advantage of plasmolysis to the terrestrial plants?
Answer:
plasmolysis make the plants floopy, when water passes out through osmosis the plant become limb
Why a cell spends the majority of its time in interphase.
A cell spends the majority of its time in interphase because during this period the cell grows and synthesizes materials required during and after its division. During interphase, the cell duplicates its genetic material.
The cell cycle can be divided into a long interphase and a short mitotic (M) phase.
The interphase can in turn be divided into three phases: Growth 1 (G1) phase, Synthesis (S) phase and Growth 2 (G2) phase.
During the S phase, the cell duplicates its genetic material, which is sharply controlled by different cellular mechanisms (e.g., checkpoint mechanisms).
During G1 and G2 phases, the cell synthesizes all the proteins required during the M phase and after cell division.
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when a tautomeric shift occurs, what is true about the resulting mutation?
When a tautomeric shift occurs, then the resulting mutation ALWAYS changes a purine to a purine or a pyrimidine to a pyrimidine. A tautomeric shift may lead to a point mutation.
A mutation is any alteration in the nucleotide (DNA) sequence of the genome of an individual.
A tautomeric shift can be defined as a temporary change in the nucleotide base structure.
A transition mutation is a point mutation of one purine or pyrimidine base pair to the other purine/pyrimidine that occurs when one nucleotide base undergoes a tautomeric shift during DNA replication.
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A ____ is the coding and
is the trait.
A scientist fills a glass container with water and places an aquatic plant inside the container, then closes the lid and places the
container in direct sunlight. The scientist observes small bubbles on the surfaces of the plant's leaves on days 1 and 2, but no
bubbles on day 3. The scientist concludes that the bubbles were caused by photosynthesis. Which substance should be
added to the water in order for the bubbles to reappear? (1 point)
Answer: Are there any options? you either add C02 because it has run out gas or you and in minerals that also contain C02.
Explanation: you need C02 to have photosynthesis, so with a closed off lid, the gas is going to eventually run out.
Carbon dioxide should be added to the water in the container in order for the bubbles to reappear in the glass container while placed in sunlight. Carbon dioxide is a component of photosynthesis.
What is Photosynthesis?Photosynthesis is the process by which plants prepare their own food in sunlight and in the presence of carbon dioxide gas. Photosynthesis process takes place in the chloroplast of cells.
Photosynthesis is an anabolic reaction in which carbon dioxide and water reacts in the presence of sunlight which is trapped by the chlorophyll present in the leaves of plant to produce glucose (carbohydrate) and oxygen gas, which is later utilized in the process of respiration.
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Normally dividing cells:
replace damaged or lost cells.
heal wounds.
help tissue and organs grow.
help keep a person in shape.
what energy carrying molecule is created when the chemical bonds of glucose are broken
By oxidizing glucose and other dietary molecules in a step-by-step manner, ATP and NADH are produced as chemical energy.
What is ATP?
A vital "energy molecule" present in all living things is adenosine 5′-triphosphate, also known as ATP and typically written without the 5′-. In particular, it is a coenzyme that transfers energy to cells by releasing its phosphate groups when it interacts with enzymes like ATP triphosphatase.
By adding a phosphate group to another molecule, ATP can drive biological operations (a process called phosphorylation). Special enzymes are responsible for carrying out this transfer, which connects the cellular processes that need energy to the release of energy from ATP.
A variety of cellular functions, such as ion transport, muscular contraction, the transmission of nerve impulses, substrate phosphorylation, and chemical synthesis, all require energy and hence use ATP. A large demand for ATP is generated not just by these processes but also by others.
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Which term means, "changes over
time"?
A. ecological disturbance
B. ecological succession
C. biodiversity
A student creates an experiment to determine the effects of oxygen on the growth of a water plant. The student fills three containers with water and adds an aquatic plant to each. Container 1 is open to the air, container 2 has a lid that prevents the exchange of air, and container 3 has a lid with a tube that pumps air into the container. After three weeks, the student observes that containers 1 and 3 have healthy green plants, while the plant in container 2 has not grown, and the leaves show browning areas.
Which explanation provides the reason for the difference in the growth of the plant in container 2?
Answer:c
Explanation:more oxygen
Answer:
yes
Explanation:
i took it
Carbon in the atmosphere (CO2)
Carbon in plants and animals
It must move through at least 5 different living things (plants/animals) - be sure that the plants/animals would actually interact with each other in nature (ex no african lions eating arctic foxes) this may require a bit of research.
Extra credit - show it becoming fossil fuels and the fossil fuels being burned to release CO2 back into the atmosphere.
In plants/animals- either how its stored in the plant/animal then the plant/animal being eaten or the steps of cellular respiration
In plants- the steps of photosynthesis (how it goes from being CO2 to glucose)
Paragraph / written story
7) Check the terms that fit into the science category "Biology". Select all that apply. air light solar system water animals sound land plants
An organism in its niche within an ecosystem is similar to?
A: a baseball player in his position on the baseball team.
B: the umpire not on a team.
C: the audience in the stands of a game.
D: the opposing team at a baseball game.
An organism in its niche within an ecosystem is similar to a baseball player in his position on the baseball team.
NICHE:Niche in biology refers to the specific role or position of an organism in its ecosystem or habitat.
The niche of an organism is specific or particular to that organism and this enables it to adapt and survive in its environment.
This explanation shows that niche can be likened to a baseball player in his specific position on the baseball team.
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Answer: A: a baseball player in his position on the baseball team.
Which of these is an advantage of factory farming?
O A. Less efficient operation than family farms
O B. More job opportunities than family farms
O C. Smaller profit margin than family farms
O D. More expensive products than family farms
Answer:
B
Explanation:
Answer is not A because this is not a benefit
Not C because it is also not a benefit
not D because it is not a benefit
B is the only benefit listed.
what is dropped off at the lungs by the blood vessels
Answer:
carbon dioxide
Explanation:
1) compare all three states of matter to the
right. Which square has the greatest density
and why? And why is it correct?
Answer:
A
Explanation:
it has more matter in given area, so it is denser.
Epinephrine mediates the fight-or-flight response of the body. One of the effects is to increase the amount of glucose available to muscles. What does the signaling pathway triggered by epinephrine cause to occur in liver cells
Answer:
In liver and muscle cells, epinephrine stimulates the release of glucose from glycogen by inhibiting glycogen synthesis and stimulating glycogen breakdown.
Explanation:
My aunt works in the medical field, so I asked her. Hope this helps whoever needs it.
the recommended daily allowance listed on the nutrition facts label is based on how much caloric intake?
Answer:
2,000-calorie daily diet.
Explanation:
A small inflamed elevation filled with bacterial fluid and pus and appear red and cloudy or white is known as a: Select one: a. milia b. pustule c. cystic acne d. seborrhea
Answer:
C. Pustule
Explanation:
What is it called when water moves through pores in soil?
Answer:
percolation,
Explanation:
Movement of water into soil is called infiltration, and the downward movement of water within the soil is called percolation, permeability or hydraulic conductivity. ... Pore space. Spaces in soil, between the mineral and organic matter, that are filled with water or air.
you can find a nucleus in the cells of human,protists, bacteria and viruses
нєℓℓσ тнєяє!
Bacteria lack a nucleus, mitochondria, chloroplasts and organelles. Protists can either be single-celled or multiple called. They contain a nucleus surrounded by a nuclear membrane. The DNA or genetic material of a bacteria is not surrounded by a protective membrane known as a nuclear membrane.
I really hope this helps! Have an amazing day/evening/night!
Hugs, Kiwi <3