BIO HELP! 20PTS

1. A plasma membrane and a cell wall:

-are two names for the same thing
-have the same structure and different functions
-have different structures and the same function
-have different structures and different functions

2. Of the five transport mechanisms, which one will the cell utilize if the substance being transported is insoluble?

-active transport
-passive transport
-pinocytosis
-facilitated diffusion
-phagocytosis

3. The natural tendency of molecules to move from higher to lower concentrations is _____.

- diffusion
-solubility
-transport
-dissolution
-fermentation

4.Why do O2 and CO2 pass through the plasma membrane?

they are nonpolar and soluble
they are facilitated by protein
they are "pumped" through
they undergo pinocytosis

5. Which statement(s) corresponds to cellular respiration? (can be multiple answers)

-CO2 diffuses passively into the cell
-CO2 diffuses passively out of the cell
-CO2 must be pumped out of the cell
-O2 diffuses passively when produced inside the cell
-O2 diffuses passively and then is converted to CO2
-O2 is pumped in and forces CO2 out

6. The cell mechanism of "active transport" involves the transport of insoluble chemicals across the membrane with protein acting as the carrier.

-True
-False

Answers

Answer 1
1:D
2:a
3:d
4:c
5:b
6:True
Answer 2

. #3 is diffusion and #4 is they are nonpolar and soluble. #5 is CO2 diffuses passively out of the cell and O2 in respiration is converted to water. O2 diffuses in to the cell.


Related Questions

Which muscle is innervated by the ulnar nerve? select from letters a-d?

Answers

The ulnar nerves innervate muscles in the frontal part of the forearm, and in the hand. In the anterior forearm, the well-developed branch of ulnar nerve provisions two muscles: Flexor carpi ulnaris which stretches and abducts the hand at the wrist; and Flexor digitorum profundus which stretches the fingers.

The ulnar nerve innervates several muscles including the flexor carpi ulnaris, which flexes and adducts the hand, and the flexor digiti minimi brevis, which flexes the little finger.

The ulnar nerve innervates several muscles in the forearm and hand, among which are the flexor carpi ulnaris and the flexor digiti minimi brevis. The flexor carpi ulnaris muscle flexes and adducts the hand at the wrist, playing a vital role in movements such as gripping. The flexor digiti minimi brevis specifically flexes the little finger, aiding in intricate hand movements.

Within the context of forearm muscles and their movements, the extensor carpi ulnaris extends and adducts the hand, while the extensor digitorum extends the hand at the wrist and the phalanges, contributing to the complex dexterity of the hand. Identifying these muscles embodies a fundamental aspect of anatomy that is crucial for understanding the musculoskeletal system's functionality.

What happens to the body when cirrhosis develops?

Answers

cirrhosis of the liver is a disease that effects the function of the liver. the liver has a function to clean out and detoxify the body. If at that point the liver cannot clean out the toxins you either have dialysis to help clean out the toxins in the liver. it causes the kidneys not to function correctly and you may need a kidney transplant.

the liver fills with fat

Interpret grendel's observations of humans. how is this a satirical commentary on human society?

Answers

Grendel seems to find the violent tendencies of humans as illustrated in their fighting among groups, as more primitive than that of animals. Ironically, while Grendel himself will kill and eat a human, he does not organize into groups with others of his ilk and seek to hunt humans as they do to one another in war-like behavior masking their covetous motivations.

An 85-year-old client is alert and able to participate in care. the nurse understands that, according to erikson, a person's adjustment to the period of senescence will depend largely on adjustment to which developmental stage?

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During radiation therapy with radium implants the client is placed in isolation so that exposure to radiation by family and staF is decreased. Voiding every two hours is unnecessary; a full bladder will not disrupt the seeds. Excess exposure to radiation is hazardous to personnel. Gloves will not protect the nurse from radiation

Which blood component is important in the formation of clots?

Answers

I believe fibrin is the answer

Answer: The Answer is Platelets

Benjamin has just been diagnosed with a chronic illness. his physician informs benjamin that this means:
a. he has a short-term illness.
b. he has a type of mental health diagnosis.
c. he has an easily treatable illness that will not last more than 1 month.
d. he has a long-term and persistent illness.

Answers

D- he has a long term and persistent illness

Zebra mussels are originally native to Russia. In the mid-1980's, zebra mussels were introduced into the Great Lake region of the United States where they rapidly reproduced; females can produce up to one million eggs per year. All BUT one situation would be a problem caused by the introduction of this invasive species. That is A) damage to boats, harbors, and docks. B) helping other species of mussels thrive and grow in size. C) damage to water treatment plants by clogging up the intakes. D) out competing native species for food, leading to a decrease in their population.

Answers

B is the correct answer

The correct answers are option C- damage water treatment plants by clogging up the intakes and option D- out competing native species for food, leading to a decrease in their population.

Each zebra mussel can filter up to liter water per day to feed on plankton. Sea plankton are the source of food for zebra mussels and they eat a lot of plankton which makes it harder for other sea animals to find food for themselves.

Second problem zebra mussel caused was clogging the water pipes by growing and dividing inside them which disrupts water flow.


Why is fermentation considered an anaerobic process? anaerobic what are the products of fermentation in humans? what are the products of yeast fermentation?

Answers

Fermentation is considered anaerobic because it happens when no oxygen is present.
Humans--> lactic acid
Yeast--> ethanol
Final answer:

Fermentation is an anaerobic process as it does not require oxygen, with humans producing lactic acid and yeast producing ethanol and carbon dioxide. While yielding less ATP than aerobic respiration, it is vital for energy production when oxygen is scarce.

Explanation:

Fermentation is considered an anaerobic process because it does not require oxygen to produce ATP (adenosine triphosphate), the energy currency of the cell. Instead of oxygen, it uses an organic molecule to accept electrons during the breakdown of energy-rich molecules like glucose.

Humans undergo lactic acid fermentation, which produces lactic acid and ATP when oxygen levels are low, such as during intense exercise. This type of fermentation allows for short bursts of energy and helps to regenerate NAD+ needed for glycolysis to continue producing ATP.

Yeast, on the other hand, performs alcoholic fermentation, where pyruvate is converted into ethanol and carbon dioxide. This process is utilized in the production of alcoholic beverages and causes bread to rise during baking.

Comparison of Fermentation Types

Lactic acid fermentation: produces lactic acid, used by human muscles in anaerobic conditions.Alcoholic fermentation: produces ethanol and carbon dioxide, utilized by yeast in the making of alcohol and leavening of bread.

ATP Yield and Importance

The ATP yield from fermentation is much lower than aerobic respiration, providing just 2 ATP molecules per glucose molecule, while aerobic respiration can generate approximately 36-38 ATPs. However, the key advantage of fermentation is its ability to produce ATP in the absence of oxygen, ensuring that energy production can continue in anaerobic conditions.

do the protein polymers in our food have the same structure as the proteins polymers in our body

Answers

The answer is no the polymers in our food do not have the same structure as the polymers in our body because the polymers in our food are in our food and the polymers in our body are in our body 
Final answer:

Proteins in our food and body have a similar structure, consisting of amino acids linked by peptide bonds. However, the specific arrangement and sequence of amino acids may differ.

Explanation:

Proteins are polymers made up of nitrogen-containing monomers called amino acids. These monomers are linked together by amide bonds, also known as peptide bonds, via a condensation reaction. The proteins in our food and in our body have the same basic structure, consisting of a central carbon atom bonded to an amino group, a carboxyl group, and a variable side chain.

For example, in both our food and our body, proteins are made up of the same 20 amino acids. These amino acids form long chains held together by peptide bonds, which give proteins their unique structure and function.

Therefore, the protein polymers in our food have a similar structure to the protein polymers in our body. However, the specific arrangement and sequence of amino acids may differ, resulting in different types of proteins with unique functions.

Half of the burn victims die when the burn area exceeds _____ percent of the body

Answers

Half of the burn victims die when the burn area exceeds 70 percent of the body

Of the various types of skeletal muscle fibers, the type containing the most glycogen granules is

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Slow oxidative fibers

What is considered the ultimate wonder of cells

Answers

According to G.D Budhiraja in his book "The Natural Way of Healthy Aging," the ultimate wonder of cells is the egg cell. 

The egg cells is considered to be the ultimate wonder of cells because of its potential to form another human being. Once fertilized, the egg cell multiplies and grows, and "seems to know" just the right timing for certain processes to occur within the embryo or fetus. It seems to know when certain hormones should be produced, when it should implant in the uterus, and when the hands, legs, feet, hair, and other parts of the embryo and fetus should grow. 

Which structures are haploid? select all that apply?

Answers

i neeeed help on the question too

What will happen to your heart rate when you hold your breath?

Answers

Hey there,
It will reduce your heart rate, as the relaxed muscles no longer need a lot of oxygen, and your CO2 levels are low..

Hope this helps :))

~Top

The carbon in coal, oil, and natural gas came from?

Answers

The carbon in coal and oil comes from plants and animals.

Where is the glandular swelling on the earthworm found?

Answers

The glandular swelling is found on the back of the earthworm and is called C.litellum.
An earthworm is tube shaped and it belongs to the Annelida phylum. It is usually found in the soil, where it contribute to the level of fertility of the soil by feeding on the dead organic matter and by aerating the soil. Earthworms lack internal skeletons and they are hermaphrodites. 

What type of organism would recycle a dead tree in a forest

Answers

A decomposer, a very small bug or even bacteria.

Answer:a

Explanation:i dont lie

Explain why combed yarns are more costly than carded yarns of the same fiber content and size

Answers

Combed yarns are more costly than carded yarns of the same fiber content and size because more fibers are fluffed up and aligned to create a smoother yarn. Carded yarns need lesser fibers creating  slightly fuzzier yarn. More fibers used means higher cost. 

The innermost layer of the eye, which contains the vision receptors, is the:

Answers

Hello!

The innermost layer of the eye, which contains vision receptors is the: Retina.

I really hope this helped you out! :)

The innermost layer of the eye is the retina, which holds the vision receptors known as rods and cones. It is part of the neural tunic, which also includes the ganglionic and bipolar cells necessary for processing visual information.

The innermost layer of the eye, which contains the vision receptors, is the retina. This neural layer is essential for photoreception and consists of a complex multilayered structure, where light-sensitive cells known as rods and cones are located. The retina's role is to convert light that enters the eye into electrical impulses that can be interpreted by the brain. It rests upon the choroid coat and transforms the visual information into nervous signals through a complex arrangement of photoreceptors, bipolar cells, and ganglionic cells.

To understand this better, light must first travel through the fibrous tunic, the eye's outermost layer. The fibrous tunic is composed primarily of the sclera and cornea. Then, it moves through the vascular tunic, which includes the choroid, ciliary body, and iris, before reaching the neural tunic or retina. Here, in the fovea, the area of highest visual acuity, the light stimuli are focused. Within the retina, light is detected by the rods, which are highly sensitive in dim light, and the cones, which are sensitive to different colors of light.

Gottfredson and hirschi trace the root cause of poor self-control to

Answers

Low self-control is linked back to poor child-rearing practices. Children who do not learn that they are not to receive everything they ask for seem to be worse at controlling their impulses as adults. These children (and adults) look for immediate gratification, and this can lead to criminal or anti-social behaviors in the future.

The spread of electromagnetic energies to which the eyes respond is called the

Answers

The answer is Visible Spectrum.
is called the visible spectrum

Water and soil pollution from oil and gas drilling is primarily what type of concern?

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The answer is Environmental issues.

How was homo floresiensis different in appearance from homo sapiens?

Answers

H. floresiensis tended to be smaller than H. sapiens. In addition, they had much smaller heads and, therefore, smaller brains. Also, the species had a much more sloped forehead, shoulders that were more forward-leaning, and feet that were relatively large for their small body size.

If you look at the cross section of a long bone under a microscope, the rings of bone immediately internal to the periosteum of the bone are called

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External circumferential lamellae

A general function of all cellular membranes is to regulate which materials can enter or leave the cell. move the cell. produce proteins for the cell. support the cell and determine its shape. produce energy for the cell.

Answers

not really sure what your talking about

Exposure to light affects the body's production of _____, which helps regulate the sleep-wake cycle.

Answers

Melatonin I believ eis your answer. Not melanin like the pigment in our skin but melanin the sleep hormone. 

Whats are the characteristics of the stage ii pressure ucler? select all that apply?

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i neeeed help on the question too

Guillermo was eventually unable to speak because he lost the ability to control the muscles around his vocal cords. a stroke patient sometimes loses the ability to speak because of the loss of blood flow to the brain. what is this called

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The condition of not being able to speak is called aphasia. Aphasia is an inability to comprehend language because of damage brain caused by the low supply of blood to the brain. People having this may not just lose their ability to speak but also the ability to read and write. 

Genes are able to be passed onto offspring because they are found on

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a law changing because a new scientific method was developed

Enzymes are typically which type of bio molecule

Answers

Enzymes are usually proteins
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