Choose the best answer.
The ____ covers the outside of the cell and keeps the contents inside.

a. plasma membrane
b. cell wall
c. ribosome
d. cytoplasm

Answers

Answer 1

Answer: a. plasma membrame

Explanation:

it's not b becasue a cell wall is composed of many cells. c and d are compoments of a cell found within it. which leaves us with a. plasma membrame, the protective layer that seperated the cell with its outside environment.

hope this helped! ♡


Related Questions

someone please help with this question!! giving brainliest.

Answers

The correct answer is answer C.

This is called sickle cell anemia. The mutation here is a valine in place of glutamic acid at position 6 of the B-globin chain. The resulting mutated hemoglobin is called HbS. When deoxygenated the HbS changes conformation such that it polymerizes and crosslinks, misshaping the cell.

The hemoglobin can still function. It can still bind and unbind oxygen, and therefore deliver oxygen. In fact when HbS is oxygenated the RBC will return to its normal shape it is just the deoxygenated form of HbS that causes the sickling.

It’s acceptable if your conclusion does not support your hypothesis. true false

Answers

Answer:

True! Your hypothesis is a fancy way of saying it's a guess. Your conclusion could be the same or completely different.

Explanation:

Does this help you???

If your conclusion does not support your hypothesis. this is false as hypothesis means explanation.

If the statistics constantly do now no longer aid the speculation, then CLEARLY, the speculation is NOT an affordable clarification of what you're investigating. The speculation is rejected, and we look for a brand new interpretation, new speculation that helps the experimental statistics.

What happens when speculation fails?

When speculation fails, the primary issue you ought to do is look at the statistics closely. Then use your studies and statistics to decide a likely cause why the speculation changed into incorrect. Once you give you a cause your speculation can also additionally have failed, you could begin deliberating approaches to test your assumption.

Thus it is clear that if your conclusion does not support your hypothesis this is false.

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It is a cold winter day in Boston with a temperature of −7° C (19° F) and forecast of 3 cm of snow. How do the weather conditions determine the possibility of snow?

A) It is a cold winter day, and it snows every day in the winter.
B) It is winter, and the temperature is well above freezing, causing snow.
C) It is winter, and the temperature is well below freezing, making snow likely.
D) Snow is expected to fall at temperatures at or above freezing.

Answers

Answer:

The answer to this question would be D!

Answer:

C

Explanation:

C

snow is a form of water with freezing point 0 degrees

How is a high rate of reproduction beneficial to a species?(1 point) It prevents extinction because there are so many individuals.
It prevents extinction because there are so many individuals.
It ensures that at least a few individuals will survive to pass on their traits.
It improves fitness over time versus species with slower rates of reproduction. I
It leads to faster evolution and passing on of traits. It leads to faster evolution and passing on of traits.

Answers

High rate of reproduction is beneficial to a species because it ensures that at least a few individuals will survive to pass on their traits.

What is reproduction?

Reproduction is the biological process whereby living organisms replicate themselves by producing offsprings.

High rate of reproduction means that organisms produce excessive number of offsprings.

Therefore, high rate of reproduction among organisms is beneficial to a species because it ensures that at least a few individuals will survive to pass on their traits.

Learn more about reproduction at: https://brainly.com/question/7464705

Differential Reproduction Quick Check:


1. (D) resource partitioning
2. (D) competitive exclusion

3. (D) A population of deer show

4. (C) elephants are being born

5. (A) it ensures that at least a few

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Hope this helps! :)

Which statement best describes the overall function of the human
respiratory system? *
Mark only one oval.
The heart pumps blood containing carbon dioxide into the lungs, where it is
absorbed
Oxygen is transferred into the blood, which circulates the gas throughout the body
Oxygen is taken into the lungs and exchanged for carbon dioxide, which is exhaled
Carbon dioxide is taken into the lungs and exchanged for oxygen, which is absorbed

Answers

Answer:

oxygen is taken into the lungs and exchanged for carbon dioxide which is exhaled

What is the shape of DNA when it is not undergoing replication?

A.Double Helix
B.Circular

Answers

Answer:

B.circular

Explanation:

Which of the following is not a way that nonnative organisms are introduced to new aquatic ecosystems related to commerce? a. Cargo ship hulls b. Recreational boats c. Escape from aquariums d. Migration Please select the best answer from the choices provided A B C D.

Answers

The nonnative organisms are introduced to new aquatic ecosystems in option "D" which is migration.

What is an aquatic ecosystem?

An aquatic ecosystem is an ecosystem in and encircling a body of water, indifferent to land-based terrestrial ecosystems.

Aquatic ecosystems have communities of organisms that are dependent on each other and on their environment.

Thus, migration is not a way that nonnative organisms are presented to new aquatic ecosystems related to trade.

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Synovial joints ________. Group of answer choices are joints where the bones articulate with each other within a fluid-filled joint cavity are joints where the bones are connected to each other by hyaline cartilage may be functionally classified as a amphiarthrosis may be functionally classified as a synarthrosis

Answers

Answer:

are the most common type of joint in the body (see image 1). These joints are termed diarthroses, meaning they are freely mobile. A key structural characteristic for a synovial joint that is not seen at fibrous or cartilaginous joints is the presence of a joint cavity.

Which of the following is required for photosynthesis to take place? a. sugar b. oxygen c. atp d. water please select the best answer from the choices provided a b c d

Answers

The answer will be :

D. water.

Water, is required for photosynthesis to take place.

How does photosynthesis work in plants?

Photosynthesis is the process of creating sugar and oxygen from carbon dioxide, water and sunlight. It happens through a long series of chemical reactions.

But it can be outlined like this Carbon dioxide, water and light go in. Glucose, water and oxygen come out.

Thus, Water, is required for photosynthesis to take place.

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Explain how the VIH virus uses specific structures to enter the cell

Answers

Answer:

When HIV infects a cell, it first attaches to and fuses with the host cell. Then the virus uses the host cell's machinery to convert the viral RNA into DNA and replicate itself. The new copies of HIV then leave the host cell and move on to infect other cells.

Each biome has its own climate? question 2 options: true false

Answers

i believe true? not totally sure but each biome is different so i’m guessing climates wouldn’t be too similar

Answer:

True!

Explanation: I took the test.

The storage polysaccharides are ________ in plants and ________ in animals.

Answers

Answer:

I think it's

The storage polysaccharides are starch in plants and glycogen in animals.

When the skin comes in contact with an irritant, receptors in the skin send signals to the spinal cord. The signal is then sent to the brain for processing, and the individual begins to scratch the affected area. Which two systems are most likely interacting when a person experiences itching caused by a skin irritant?.

Answers

Peripheral nervous system and Central nervous system are most likely interacting when a person experiences itching caused by a skin irritant.

What is Central nervous system?

This is the control center of the nervous system and comprises of the brain and spinal cord.

The Peripheral nervous system comprises of sense organs such as the skin. The receptors in the skin sending signals to the spinal cord mean the interaction between Peripheral nervous system and Central nervous system.

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The instructions in ______ encode the information that a cell needs to produce proteins, which are vital to living things. Multiple choice question.

Answers

Answer:

DNA

Explanation:

The instructions in DNA encode the information that a cell needs to produce proteins, which are vital to living things.

The instructions in DNA encode the information that a cell needs to produce proteins, which are vital to living things.

What is DNA?

DNA, also called deoxyribonucleic acid, is the part of a living being that carries genetic information.

The DNA encodes the information needed to synthesize proteins in living organisms.

Therefore, it can be said that instructions in DNA encode the information that a cell needs to produce proteins, which are vital to living things.

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In a DNA molecule, ______ bonds form between nitrogenous bases, such that A (adenine) pairs with its complement ______, and G (guanine) pairs with its complement ______.

Answers

In a DNA molecule, hydrogen bonds form between nitrogenous bases, such that A (adenine) pairs with its complement T (thymine), and G (guanine) pairs with its complement C (cytosine).

In the above Hydrogen bond, A (adenine) pairs with T ( thymine) while G (guanine) pairs with C (cytosine).

What is DNA molecule?

DNA molecule is a type of nucleic acid that is found in living cells. DNA is an acronym for deoxyribonucleic acid. The chromosomes is contained within DNA molecule, it carries hereditary information which can be passed from parent to offsprings.

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What seasonal change can be seen in Florida birds during the fall?
A. Birds begin to store food and go dormant

B. Birds begin to store food and hibernate

C. Birds migrate further north to colder locations

D. Birds migrate further south to warmer locations

Answers

The answer will be:

D. Birds migrate further south to warmer location.

Answer:

B birds begin to store food and hibernate

Which of the following is not needed by living organisms?
A.alcohol
B.air
C.energy
D.water

Answers

prob alcohol honestly we don’t need it

Answer:

alcohol

Explanation:

it is very bad for our health so we dont need it in our life

Which of the following relationships is symbiotic?

A group of ants work together to build an underground nest.

A tick latches on to the body of a dog and feeds on the dog's blood.

Abee pollinates a flower while feeding on the flower's nectar.

A remora attaches to the body of a shark and feeds on scraps when the shark eats.

Two male red-winged blackbirds fight over territory.

A male bluebird and a female bluebird provide care for their offspring.

Answers

It should be box 1 3 5

The image below shows plant cells.

plant cells
What feature of cells is best demonstrated in the image?

A.
Cells are formed from other cells within the same tissue.
B.
Cells are the basic units of structure and make up tissues.
C.
All organisms are made up of a large number of cells.
D.
All organisms have cells with different shapes and functions.

Answers

Answer:

c.

Explanation:

The image shown in the question shows that organisms are made up of large number of cells. Living organisms constitute different types of cells.

Which of the following happened partly in response the fire on the Cuyahoga River? Select two correct answers.
A)Rachel Carson wrote silent spring to detail the damage done by the fire. B)The location of the fire was declared superfund site. C)Congress passed the Clean Water Act into law. D)The national environmental policy act was passed, which led to the formation of the EPA

Answers

Answer:

- Congress passed the Clean Water Act into law.

- The National Environmental Policy Act was passed, which led to the formation of the EPA.

Explanation:

The following happened partly in response the fire on the Cuyahoga River are Congress passed the Clean Water Act into law. D)The national environmental policy act was passed, which led to the formation of the EPA.

Which river was caught on the fire?

When Lake Erie – or extra precisely the Cuyahoga River which flows into Lake Erie – stuck hearthplace in 1969, it ignited a firestorm of public outrage over the indiscriminate dumping of sewage and commercial chemical compounds into the Great Lakes.

The 1969 river hearthplace stimulated the advent of the EPA and Clean Water Act. Catch up at the growing fire making headlines. Fish stuck withinside the Cuyahoga River, well-known for catching hearthplace withinside the Sixties at the moment are secure to eat, says the Ohio Environmental Protection Agency.

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In certain flowers, blue and yellow flowers are incompletely dominant to each
other. Show the cross between a pure blue flower and a pure yellow flower

Answers

The cross between a pure blue flower and a pure yellow flower is attached as an image. The genotypes of the parents are as follows:

Pure blue flower = BBPure yellow flower = YY

What is incomplete dominance?

Incomplete dominance is a type of non-mendelian inheritance in which the alleles of a gene are neither dominant nor recessive over one another, hence, an intermediate phenotype is produced.

According to this question, blue and yellow flowers are incompletely dominant to each other in certain flowers.

The genotype of pure blue flower = BBThe genotype of pure yellow flower = YY

A cross between BB × YY will produce an intermediate phenotype different from both parents.

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Partial nitrate reduction results in the formation of.

Answers

Answer:

Partial nitrate reduction results in the formation of nitrite and water

Explanation:

In which situation would calcium enter the cell through active transport?

O The cell is 20% calcium, and the cell's environment is 80% calcium.

O The cell is 50% calcium, and the cell's environment is 50% calcium.

O The cell is 40% calcium, and the cell's environment is 60% calcium.

O The cell is 80% calcium, and the cell's environment is 20% calcium.

Answers

The cell is 80% calcium, and the cell's environment is 20% calcium for active transport to take place.

What is Active transport?

This is defined as the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration against the concentration gradient.

Option D involves movement of calcium into the cell from the environment which has a lower concentration to the cell with a higher concentration which depicts active transport .

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What will happen if Mars was not closer to the sun?​

Answers

Answer:

It would not affect Earth at all, but Mars would be colder and dark most of the time, like the planets far away from the sun.

Explanation:

Answer:

Mars is already a cold planet but if it moved farther to the sun, it would mess up all of the other planets' orbit.

What do you notice about each beaker?

Answers

Answer:

The less sugar added into mixture, the less volume of mixture and less inflated the balloon becomes

Explanation:

The less sugar in the container the less volume and less gas I’d assume since the balloon is less full as well. Hope this was helpful:)))

Which abiotic component of its ecosystem did the owl in the picture above use to build a safe nest?
OA. air
OB. rocks
OC. trees

Answers

Answer:

The answer is rocks

Explanation:

Abiotic factors are nonliving, and biotic factors are living or once living. The tree twigs were once living, and the air wasn't used, so the rocks are the only answer left.

Hope this helps!

B is the answer bc the best is on the rock and that is the only thing stopping the nest from falling

how are volcanoes like windows to the inside of Earth

Answers

Answer:

They emit steam and volcanic gases, such as sulfur dioxide and carbon dioxide. Fumaroles create pathways for rising heat, volcanic gas, and magma. Openings stemming down into the pool of magma. Cracks and fumaroles act like a window so scientists can get a glimpse of the gases inside volcanoes.

Explanation:

The physical appearance of an organism is known as its
A. genotype
B. phenotype
C. allele
D. testcross

Answers

Answer:

B.Phenotype

Explanation:

The term "phenotype" refers to the observable physical properties of an organism; these include the organism's appearance, development, and behavior. An organism's phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.

What effect does the Continental Divide in the United States have on water runoff?

Answers

Answer:

It separates the water that runs toward the Pacific Ocean from the water that runs toward the Atlantic and Arctic Oceans and the Gulf of Mexico.

why argon is called inert element?

Answers

Answer:

Helium neon and Argon are called inert gases are noble gas because they have complete its duplet as well as Octate. and no other element like Helium neon and Argon complete its octate and duplete. in the 18th period all element are inert. Which gas does not exist in air?

Explanation:

Answer:

The outermost (valence) shell of argon has eight electrons, making it exceedingly stable and, thus, chemically inert.

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