What is chromatin?
A. a structure that allows materials in and out of the nucleus

B. a thread-like genetic material formed from DNA and histones

C. a defensive layer that forms when the cell is under attack

D. a structure that protects the nucleus from extreme temperatures

Answers

Answer 1

Answer:

B. a thread-like genetic material formed from DNA and histones


Related Questions

An upper motor neuron supplying the lateral rectus muscle of the eye would be part of the ________ tract(s)

Answers

Answer:

corticospinal tract

The neurons that travel in the corticospinal tract are referred to as upper motor neurons; they synapse on neurons in the spinal cord called lower motor ...

What is a scatter pattern? What can it tell a forensic anthropologist?

Answers

Answer:

A scatter plot (aka scatter chart, scatter graph) uses dots to represent values for two different numeric variables. The position of each dot on the horizontal and vertical axis indicates values for an individual data point. Scatter plots are used to observe relationships between variables.

A scattered pattern is an area where the bones are distributed after a while. This can tell anthropologist how long the body was in the area and the conditions scene the bones arrived.

Explanation:

Answer:

A scattered pattern is an area where the bones are distributed after a while. This can tell anthropologist how long the body was in the area and the conditions scene the bones arrived.

During a Vo2max test, many people have a Respiratory Exchange Ratio greater than 1.0 as they approach their VO2max. Why

Answers

The important of RER between 0.7 and 1 shows a blend of carbohydrates and fat as a basis of energy. In case the value is more significant than 1, it means anaerobic respiration as a result of more carbon dioxide being developed than the oxygen that is being consumed.

What is the difference between vo2max and relative vo2max?

Absolute VO2 max is only the amount of oxygen you breathe in liters per minute.

This dose depends on your age, weight, size, and gender. Relative VO2 maximum  Relative VO2 max calculates your weight in liters per minute per kilogram of body weight.

Thus,  anaerobic respiration results of more carbon dioxide being forged than the oxygen that is being destroyed.

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What determines the type of feedback? A. How close to equilibrium the characteristic is B. How the body responds to a change C. How much product is present already​

Answers

Answer:

The awnser is B

Explanation: no explanation

The fact that determines the type of feedback is "How the body responds to a change?" Thus, option B is correct.

What is positive feedback?

A feedback has been known as the  process where a system responds to an external or internal stimulus. There are two major types of feedback in a system, they are negative and positive feedback or we can say that there are two types of feedback is there one is positive feedback and another one is negative feedback.

Positive feedback is a type of response that occur when an output or response is an enhancement of the input. It's output moves further away from equilibrium. A negative feedback occur when a fraction of the output is fed back to the system to control fluctuation of other output.A feedback has been known as the  process where a system responds to an external or internal stimulus.

Therefore, The fact that determines the type of feedback is "How the body responds to a change?" Thus, option B is correct.

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what is radioactive dating

Answers

Radioactive dating refers to the techniques used to date the age of rocks and fossils by radioactive isotopes.

What is Radioactive dating?

Radioactive dating can be defined as a strategy to date the age of fossils by means of radioactive isotopes.

These methodologies (Radioactive dating) are fundamental for the application field of geologists and paleontologists.

In conclusion, Radioactive dating refers to the techniques used to date the age of rocks and fossils by radioactive isotopes.

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Hello people ~
Point out the odd one

a) nucellus
b) embryo sac
c) micropyle
d) pollen grain

Answers

Answer:

pollen grain

Explanation:

all of those answer choices are related to ovules except for the pollen grain

the pollen grain is like the sperm for flowers

mark brainliest please!

because of you the love your change thank you for the lover in the joying them thank you for you but the love your change thank you for the love with the joying them bye bye GUSY!! THANK YOU VERY MUCH!!​

Answers

Where the question uhh I your welcome?

The heavily myelinated fibers that connect the two cerebral hemispheres are collectively called the:

Answers

Answer: corpus callosum

Explanation: The corpus callosum is a collection of nerve fibers that connect the two hemispheres.

In humans, which of these is required for carrying oxygen from the lungs to body cells?.

Answers

Red Blood Cells Are Responsible For Transporting Oxygen From Your Lungs To Body’s Cells.

.
Which is the next structure to contact air after it passes from the nose to the nasal cavity?

the pharynx

the larynx

the bronchus

the trachea

Answers

Answer:

the pharynx

Explanation:

edge 2022

The next structure to contact air after it passes from the nose to the nasal cavity is the pharynx.

What is pharynx?

The pharynx is a muscular tube located behind the nasal cavity and mouth, connecting them to the esophagus and larynx. It serves as a shared pathway for both the respiratory and digestive systems.

In terms of the respiratory system, the pharynx plays a crucial role in the passage of air from the nasal cavity or mouth to the larynx. It acts as a conducting tube, allowing the air to flow smoothly towards the lower respiratory tract. The pharynx also houses the tonsils, which are part of the body's immune system and help protect against pathogens.

Additionally, the pharynx is involved in the process of swallowing. It facilitates the movement of food and liquid from the mouth to the esophagus, ensuring that they enter the digestive system and not the respiratory system.

Overall, the pharynx is a vital structure that serves as a passageway for both air and food, contributing to the proper functioning of the respiratory and digestive systems.

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What does the sea otter do for the kelp forest?
O They control the urchin population by eating the urchins.
They control the sea slug population by eating plastic.
O They control the clownfish population by eating the kelp.
They control the kelp population by eating sea slugs.

Answers

Answer:

They eat large amounts of sea urchins, which keeps the creature's numbers in check and prevents the destruction of the kelp forest.

Explanation:

Answer: Sea otters have long been recognized as a classic example of a keystone species, a dominant predator that maintains the balance of kelp forest ecosystems by controlling populations of sea urchins, which are voracious kelp grazers.

When biotic potential is completely
balanced with environmental resistance,
the population.
A. increases
B. decreases
C. stabilizes

Answers

Answer:

Stabalizes

Explanation:

Because it is a balanced environment.

Answer:

When biotic potential is completely

balanced with environmental resistance,

the population.

A. Increases

B. Decreases

C. Stabilizes

Explanation:

Because, biotic potential is completely balanced with environmental resistance, which make the population stabilizes.

this is the only thing i need thanks

Answers

Answer:

1. C

2.hypo

3.d

4.hyper

5. I don't know about that

"Explain how chemical energy for use in the cell is generated by electron transport and chemiosmosis"

PLEASE HELP!!

Answers

Answer:

Explanation:

The electron-carrier proteins are arranged in the inner mitochondrial wall. A dehydrogenase enzyme (think of it as the first protein of the electron-transport chain) oxidises NADH2 (which is the reduced coenzyme NAD) and/or FADH2 (reduced coenzyme FAD). The energy from the oxidation process is used to pump hydrogen ions from the matrix to the inter-membrane space of the mitochondrion. Because of this, gradient of hydrogen ion concentration builds up across the inner mitochondrial membrane, which generates a potential difference across the membrane. The protons then flow back to the matrix through an enzyme called ATP synthase (also called ATPase). (This is called chemiosmosis because a chemical substance (H+) moves across a membrane, down the concentration gradient.) This releases energy needed for the ATP synthase to phosphorylate ADP, i.e. make ATP (chemical energy for use in the cell) from ADP and inorganic phosphate.

Note: Bolded things are important, everything else is just additional clarification in case you need it. This is the last major phase of cellular respiration. If you want a deeper insight into the process, I suggest you read a bit about glycolysis and Krebs cycle.

If a cell with a 7% glucose solution is placed into an environment with a 15% glucose solution, which if the following would be correct:

A. The environment solution is hypertonic when compared to the cell.
B. The cell is hypertonic when compared to the environment.
C. When placed into the environment, the cell will gain water by osmosis.
D. When placed into the environment, the cell will neither lose nor gain water

Answers

Answer:

A. The environment solution is hypertonic when compared to the cell.

Explanation:

What type of reproduction is needed in order for there to be genetic variation?.

Answers

Answer: any sort of reproduction that isn't as3xual (it's censored )

Explanation: because As3xual reproduction only has one parent, the genes are the same.

Discuss the ways in which carbohydrate metabolic pathways, glycolysis, and the citric acid cycle interrelate with protein and lipid metabolic pathways

Answers

The ways in which the carbohydrate metabolic pathways, glycolysis and the citric acid cycle relate as they obtain energy for the body.

What is metabolic pathways?

Metabolic pathways is the set of chemical reactions that occur in cells that allow them to stay alive, grow and divide.

Glycolysis - oxidation of glucose to obtain ATPKrebs cycle - oxidation of acetyl-CoA in order to obtain energyOxidative phosphorylation - elimination of electrons released in the oxidation of glucose and acetyl-CoA. Much of the energy released in this process can be stored in the cell in the form of ATP.Pentose-phosphate pathway - synthesis of pentoses and obtaining reducing power for anabolic reactionsUrea cycle - elimination of NH4+ in less toxic formsβ-oxidation of fatty acids - transformation of fatty acids into acetyl-CoA, for later use by the Krebs cycle.Gluconeogenesis -synthesis of glucose from smaller molecules for further use by the brain.

Whit this information, we can concclude that the ways in which the carbohydrate metabolic pathways, glycolysis and the citric acid cycle relate as they obtain energy for the body.

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Please help ASAP

I did answer but i got it wrong

If you can’t see the answers:

A: Denitrification
B: Uptake
C: Decomposition
D: Nitrogen fixation

Answers

Answer:

C i think

thats what mushrooms do - Decompositate

Pls give brainliest :>

New cells have a _______ mix than parent cell​

Answers

Answer: meiosis

Explanation:

new cells have a meiosis mix then parent cells

i might be wrong so i'ma also say try different because that also makes sense to me

new cells have a different mix than parent cell.

What is the matching base sequence to 5’ TGCTCGCTG 3’ ?

PLEASE ANSWER ASAP!!!!

Answers

Answer:

3' ACGAGCGAC 5'

Explanation:

since Adenine and Thymine pair together you would just switch them, also Guanine and Cytosine pair together so you also switch them. Finally, when you switch all of these you will have to switch the two numbers and that's it! :)

What is the half life of a radioactive isotope if a 500 gram sample decays to 62.5 grams in 99 years?

Answers

Answer:

24.75 years

Explanation:

62.5 is 1/4 of 500, which means that in 99 years it passed through four half-lifes. So, you divide 99 by four and you get that the half-life is 24.75 years. 25 years if it was rounded

Enzyme complexes that break down protein are called _____. lipases ubiquitins amylase proteasomes nucleases

Answers

Proteasomes are a large protein complex present in all eukaryotic cells that break down protein.

What are proteasomes?

It is considered one of the main pathways involved in the processes of enzymatic protein degradation.

It is the group of proteins that are associated forming large complexes, whose function is to digest cytoplasmic proteins, generating peptides.

Therefore, we can conclude that proteasomes is a large protein complex present in all eukaryotic cells that breaks down protein .

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3. What is the most common way for a system to lose energy?

Answers

Answer:

Heat energy

Explanation:

Maybe ..this can be

In mammals, which structure supports the developing embryo if fertilization occurs?.

Answers

Answer:

It occurs in the ovaries, uterus,cervix and fallopian tube. give Brainiliest

Which choice best represents what has occurred when a new population emerges that is not compatible with its former population?


predation

extinction

isolation

speciation

Answers

Answer:

Speciation

Explanation:

Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics

What is the effect of artificial light on plant growth?

Answers

Explanation:

The study highlights that interrupting seasonal light stimulation with artificial light has a wide range of effects, including: temporal differences with herbivores; changes in crop development; suppression of flowering in wild species; reduction of dark periods from the environment required for phytoremediation

What is the process by which arteries become hard and stiff as a result of too much pressure?.

Answers

Answer: atherosclerosis

Explanation:

what was the environment like in the arctic 1 million years ago?

Answers

Answer:

it had no ice

Explanation:

Answer:

The arctic was free of ice during summertime.

HELP PLSS!!
In your own words, explain how recombinant DNA techniques are used to produce medications.

Answers

Explanation:

Recombinant DNA technology enables us to change the physiology of a cell. Through this, we can produce many humanoid enzymes in other organisms... For example insulin.

Which organisms from Kingdom Animalia are invertebrates?

Select all correct answers.


worms

amphibians

jellyfish

sponges

Answers

Jellyfish, Sponges and Worms are all invertebrates.
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