Chromosomes consist of tightly coiled DNA wrapped around proteins called histones.
What is chromosome?The DNA molecule is packaged into thread-like structures called chromosomes which present inside nucleus of the cell. Each chromosome is made up of DNA that is tightly coiled many times around proteins called histones.
So we can conclude that option A is the correct statement.
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glycogen, starch, and cellulose are examples of
Starch and glycogen, examples of polysaccharides, are the storage forms of glucose in plants and animals, respectively. The long polysaccharide chains may be branched or unbranched. Cellulose is an example of an unbranched polysaccharide, whereas amylopectin, a constituent of starch, is a highly branched molecule.
Explain how the structure of each type of blood vessel compares to its function
Explanation:
blood is carried through the body via blood vessel. An artery is a blood vessel that carries blood away from the heart, where it branches into ever smaller vessels.
Which statement supports the theory of evolution
by natural selection?
A. Organisms change when the survival rate of
offspring begins to decrease.
B. Mutations occur in species that are not suited
for their environment.
C. Evolution is the result of mass extinctions of
species in different ecosystems due to a lack
of genetic diversity
D. Characteristics of populations can change over
time in response to environmental changes.
8.
Answer: Choice D
Explanation: Natural selection explains how the strong survive due to mutations to suit the environment.
The statement that supports the theory of evolution by natural selection is D. Characteristics of populations can change over time in response to environmental changes.
What is theory of evolution?The theory of evolution by natural selection, first proposed by Charles Darwin, suggests that populations of organisms can change over time through the process of natural selection.
This occurs when individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring. Over many generations, these small changes can accumulate and result in significant changes in the characteristics of a population.
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What is “selected” for in natural selection?
In other words, natural selection acts on an organism’s...?
What are the Animallia Facts
Answer: All members of Animalia are multicellular, and all are heterotrophs (that is, they rely directly or indirectly on other organisms for their nourishment). Most ingest food and digest it in an internal cavity. Animal cells lack the rigid cell walls that characterize plant cells.
Answer:
They range from tiny organisms made up of only a few cells, to the polar bear and the giant blue whale. All of the organisms in this kingdom are multicellular and heterotrophs - that means they rely on other organisms for food.
Explanation:
Have a great day
PLZ HELP!!!!!!!! WILL GIVE BRAINLIEST!!!!!!!
Which of the following systems or structures is correctly paired with its function?
Neurons—brain cells that control thoughts, calculations, and memory
Cerebral cortex—portion of the brain that controls involuntary body movement
Peripheral nervous system—carries impulses to and from the central nervous system
Central nervous system—carries information from the nerves to the muscles and glands
Answer:
the answer is c
Explanation:
¿Qué acciones propondrías para ayudar a que la biosfera y que sus ciclos no se vean afectados? Ayuda plis
Answer:
Reducir las actividades humanas.
Explicación:
Reducir el uso de combustibles fósiles, el uso de vehículos que funcionen con electricidad y plantar más plantas y árboles son las acciones que propondría para ayudar a que la biosfera y sus ciclos no se vean afectados. La biosfera se ve muy afectada debido a las actividades humanas, por lo que para conservar la biosfera y mantener su ciclo, tenemos que reducir las actividades humanas que causan más daños a la biosfera.
2. Draw a Punnett square of an Ss x ss cross. The Sallele codes for long stems in pea plants and the sallele codes for
short stems. If Sis dominant to s, what percentage of the offspring would you expect to have each phenotype
Explanation:
Put the Ss on the top and the ss to the side. In the top left, you put Ss and the other 3 boxes have the ss in them. So, the percentage is 25% Ss and 75% ss
The offspring of a sexually reproducing organism receives
A.
half of its genetic material from each parent.
B.
an exact copy of each parent's genetic material.
C.
an exact copy of one parent's genetic material.
D.
genetic material that is not related to either parent.
Answer:
A.
half of its genetic material from each parent.
Answer:
it's a cause u get half jdjsjsnsjjs
Humans affect Earth in many ways. The use of fossil fuels, the clear-cutting of forests, and controlled burns can affect
the carbon cycle.
Which process can help counteract these human interactions?
O photosynthesis
O respiration
O decomposition
O transpiration
Answer:
Photosynthesis
I hope this helps
Photosynthesis can help counteract human interactions that affect the carbon cycle. Therefore, option (A) is correct.
What is photosynthesis?Photosynthesis is the process that plants go through to take in carbon dioxide from the air and turn it into organic matter, such as sugars and starches. After being taken in by the plant, this organic material is eventually stored in the plant's tissues, where it can be accessed later for either growth or energy.
By increasing the amount of photosynthesis that takes place in ecosystems, more carbon can be removed from the atmosphere and stored in the tissues of plants. This can help to mitigate the effects of human activities that release carbon into the atmosphere, such as the burning of fossil fuels or the destruction of forests.
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please help :')
Mitosis has one division resulting in unique cells and meiosis has two divisions that result in identical daughter cells. True or False?
Answer:
True
Explanation:
Which characteristic of living things does a virus lack?
Answer:
Viruses are not made of cells as a living thing is.
Explanation:
.
Explain why you think it is useful to understand how different parts of the body work?
(I will give brainliest)
I think its useful to understand how different parts of the body work because like that you can have a better understanding on why we need those parts or why they are useful and what effects they have on us
Which molecule is formed when the protein ferrodoxin transfers electrons to an electron carrier?
ATP
ADP
NADP+
NADPH
Answer:
NADPH
Explanation:
The correct option is, option 4 (NADPH).
Answer:
NADPH
Explanation:
Hope this will help
Which characteristic of radioactive decay makes it hazardous?
A. It causes an atom to change from one specific element to
another.
B. It causes an unstable isotope to change into a stable isotope.
C. It produces radiation that can kill living cells.
D. It changes a small amount of mass into energy.
Answer:
C. It produces radiation that can kill living cells.
The characteristic of radioactive decay that makes it hazardous is it produces radiation that can kill living cells. Thus, the correct option is C.
What is Radioactive decay?Radioactive decay may be defined as a process through which an unstable atomic nucleus mislay energy through the process of radiation. The process of radioactive decay stimulates a health risk by destructing tissues and DNA in genes.
Such processes of radiation can affect the arrangement of atoms in living entities and make a potent threat of damaging tissues and DNA in genes significantly.
Radioactive decay is the methodology through which an unstable atomic nucleus loses energy through the impact of radiation. The process of radioactive decay includes alpha decay, beta decay, and gamma decay.
Therefore, the characteristic of radioactive decay that makes it hazardous is it produces radiation that can kill living cells. Thus, the correct option is C.
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Brainly!
Provide the complementary DNA sequence, mRNA sequence, and amino acid sequence for the following DNA segment. TGTTCTGCCATGACT
Answer:
mRNA complementary:
ACAAGACGGUACUGA
A=U C=G G=C T=A
DNA complementary:
ACAAGACGGTACTGA
A=T C=G G=C T=A
Explanation:
the only difference when coding mRNA into a complementary strand is that A=U.
Everything else is the same, and underneath each is an answer key to both specifically to hopefully help you for the future!
Hope this helps! :)
how did lucy survive?
Answer:
Which Lucy?
Explanation:
Answer:
Lucy was a lucky gal
Explanation:
Because she took precautions
What are the rules of binomial nomenclature
Human red blood cells contain 0.9% sodium chloride as a component of their cytoplasm. What would happen if an IV solution containing 1.5% sodium chloride is introduced into a person?
Answer:
Red blood cells will shrink because it is a hypertonic solution.
Explanation:
The sodium chloride concentration is higher: 1.5% > 0.9%, so it is a hypertonic solution. If the cells are immersed in a hypertonic medium - which is, a medium with a sodium chloride concentration higher than the concentration inside the cells - the water cells will move out from the cell. In consequence, the cells will lose water and they will shrink.
Definition of transpiration in your OWN words
Answer:
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.
Explanation:
what happens to protein in the digestion system
Answer:Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids. Amino acids are joined together by peptides, which are broken by proteases. From your stomach, these smaller chains of amino acids move into your small intestine.
HELP PLEASE
If your immune system can’t actually stop you from getting ill, then why is it beneficial? Why do you think it evolved to work this way, instead of simply stopping every infection in its tracks?
Answer:
Your immune system fights off infection and disease. It has a number of ways to detect and destroy anything it recognizes as foreign to your body, including bacteria, viruses, fungi, parasites or unhealthy cells such as cancer cells. In some people, the immune system goes into overdrive, causing the body to see its own cells as foreign and attack them. This leads to what we call autoimmune diseases, such as Crohn’s disease, rheumatoid arthritis and lupus.
Explanation:
Hi can someone please help me answer these 2 questions?
What is the function and purpose of the phosphorus cycle?
What are electromagnetic waves? Including Reflection, refraction and transmitted.
Answer:
The phosphorus cycle is the process by which phosphorus moves through the lithosphere, hydrosphere, and biosphere. Phosphorus is essential for plant and animal growth, as well as the health of microbes inhabiting the soil, but is gradually depleted from the soil over time.
Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields.
They are also perpendicular to the direction of the EM wave
Explanation:
Which of the following explains the cellular function of a ribosome?
A
It is associated with attaching to the plasma membrane in active transport.
B
It is directly involved in the bonding of amino acids to synthesize proteins.
С
It is associated with microtubules and microfilaments to move organelles.
D
It is directly involved in the storage of energy by converting ADP to ATP.
Answer:
B
It is directly involved in the bonding of amino acids to synthesize proteins.
Answer:
It is associated with attaching to the plasma membrane in active transport.It is directly involved in the bonding of amino acids to synthesize proteins.
Explanation:
I hope this helps
3. Name the molecule that would be destroyed (denatured) within the membrane at 70°C
What molecule is it ?
Answer:
The correct answer is - Protein molecule.
Explanation:
The cell membrane is the outer membrane of the cell that differentiates the external environment from the internal components of the cell. The cell membrane is made up of two major components that are lipids and proteins.
Proteins are present as channels and in the form of membrane proteins in between the lipid bilayer. Protein is the molecule that denatured or destroyed at high temperatures such as 70 degrees.
PSYCHOLOGY
Which of the following best defines the nervous system?
The nervous system is responsible for controlling and coordinating all of the activities of the
body.
B.
The nervous system is responsible for controlling and coordinating all of the movement of the
body.
C.
The nervous system is responsible for controlling and coordinating all the interactions of the
body.
D.
The nervous system is responsible for controlling and coordinating all of the synapses of the
body.
Answer:
C
Explanation:
lets say you get cut, you can feel that right? You can usually feel the pain shoot through your body. So it stands to reason that it would be your interactions with things that your nervous system would be in charge of. Cause it doesn't just have to be pain. Whenever you touch something your nerves send a message to the brain and tell it what the thing feels like. It stands to reason that the interaction you just had is not an action but rather an interaction and since the nervous system isn't in charge of moving your body but rather picking up on things you're feeling on the outside it couldn't just be that the nervous system is in charge of movement (besides I think the brain is in charge of movement and controlling actions anyway).
EDIT:
If it isn't C it might be letter B. When making this answer i didn't consider this sorry
(brailiest :3?)
All of the body's synapses are under the direction and coordination of the nervous system, hence option C is correct.
What is the nervous system?A sensory function, an interpretive function, and a motor function are the three general functions of the nervous system. Sensory nerves collect data from the interior and exterior of the body.
The information is subsequently sent by the nerves to the central nervous system (CNS). The CNS interprets and processes sensory data brought in.
Information is sent from the CNS to the body's muscles and glands through motor nerve cells. All of the body's functions are coordinated by the neurological system.
Therefore, the nervous system is responsible for controlling and coordinating all the interactions of the body.
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What happens to the average heart rate as a mammal holds their breath?
Answer:
The heart beats slowly because oxygen consumption is reduced
What makes the rungs or steps of the DNA molecule?
deoxyribose
phosphate group
nitrogenous bases
A statement that describes what is happening in nature based on repeated experiments under the same conditions is a A. scientific law B. theory C. hypothesis D. inference
Answer:
B. theory
Step by- Step Explanation:
Scientific Theories are distinguished from practice
2. Which part of DNA carries genetic
information?
Answer:
the sequence of the plate-like units (nucleotides) in the center carries information. Genes are pieces of DNA that contain information for the synthesis of ribonucleic acids (RNAs) or polypeptides. Genes are inherited as units, with two parents dividing out copies of their genes to their offspring.
HOPE IT HELPS
Explanation: