Which of the following statements about facilitated diffusion is true?

Gated proteins control the rate of diffusion.

Molecules move up the concentration gradient.

ATP is required to move molecules through the protein channels.

Molecules move from an area of low to high concentration.

Answers

Answer 1

Gated proteins control the rate of diffusion


Related Questions

Sewage discharge and fertilizer runoff is detrimental to coral growth because it increases the ________. water temperature that kills zooxanthellae water temperature that results in coral bleaching amount of toxic synthetic chemicals which stimulate excessive bacterial growth salinity of the water that results in coral bleaching amount of inorganic nutrients in the water that stimulates excessive algal growth

Answers

Answer:

The correct answer is - amount of inorganic nutrients in the water that stimulates excessive algal growth.

Explanation:

Fertilizers, sewage discharge and industrial runoff has various chemicls enrich with the inorganic compound and elements that causes eutrophication of the the water body.

Eutrophication causes increase in the number of phytoplanktons and algal growth that is stimulates by the amount of inorganic nutrients.

Thus, the correct answer is - amount of inorganic nutrients that leads to excess growth of algae.

What type of mutation is caused when a codon that corresponds to one of the twenty
amino acids specified by the genetic code is changed to a chain-terminating codon?

A nonsense mutation
B silent mutation
C chromosomal mutation
D missense mutation

Answers

D missence mutation
Is correct answer
D is the right answer. Missense mutation

Please help 10 points for answers!!

Answers

Answer:

1=65

2=50

3=true

Explanation:

Why is the alpine tundra biome worth protecting WELL GIVE BRAINLIEST IF YOU CAN HLO ME

Answers

Struggled with this earlier but because of the high altitude only some animals can live there and thrive because of the lower oxygen levels

PLSSS HELLLPP- Which of the following measurements uses a derived unit? O volume O mass O length O time​

Answers

Answer:

Volume

Explanation:

volume=length ×length ×length

The metric system is the system used for the measurement. It measures the mass, length, weight, time, etc. The unit of volume is a derived unit. Thus, option A is correct.

What is a derived unit?

A derived unit is a unit used to measure and estimate the substance by using the basic or the fundamental metric unit system. It is based on units of the fundamental system.

The fundamental units include mass, temperature, time, luminous intensity, length,  electric current, and amount of substance. On the other hand, derived units result from a combination of base units.

A volume is a derived unit as it came from the fundamental unit of length as,

Volume = length × length × length

= cm × cm × cm

= cm³

Therefore, option A. volume is a derived unit.

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describe in detail how enzymes function using pectinase as an example

Answers

Answer:

Pectinase is an enzyme that breaks down pectin, a polysaccharide found in plant cell walls. Therefore, pectinase enzymes are commonly used in processes involving the degradation of plant materials, such as speeding up the extraction of fruit juice from fruit, including apples and sapota

Question 6 of 25
Which is an example of a vestigial structure?
A. Raccoon tail
B. Fish gills
C. Whale pelvis bone
D. Human arm
help:,)

Answers

the answer for your question is D

Whats a hypothesis for “Which bait works better for a homemade fly trap?”

Answers

Answer:

If I use the correct bait, then I will have a successful homemade fly trap.

Explanation:

A hypothesis is always an "if, then" statement

define and describe osmosis​

Answers

Answer:

Movement of a solvent (such as water) into a solution with a higher solvent concentration by means of a semi-permeable membrane (as from a live cell), which tends to equal solute concentrations in the membrane on both sides.

Explanation:

Osmosis, the spontaneous transition, distribution, or diffusion of water and other solvents over a semipermeable membrane. In 1877, a German physiologist, Wilhelm Pfeffer, researched the process, which is important in biology.

Osmosis is the passage of water down its concentration gradient, across a semi-permeable membrane. An everyday example is a plastic wrap in your kitchen: it allows air and water vapor to move across it, but no water or food. The membranes of cells are semi-permeable, too.

what does Cystic fibrosis do?
(please write in your own words)

Answers

Mark Brainliest please

Answer

CF causes thick mucus that clogs certain organs, such as the lungs, pancreas, and intestines. This may cause malnutrition, poor growth, frequent respiratory infections, breathing problems, and chronic lung disease.

The Symptoms of Cystic Fibrosis:

Chronic coughing (dry or coughing up mucus)
Recurring chest colds.
Wheezing or shortness of breath.
Frequent sinus infections.
Very salty-tasting skin.

) An allosteric interaction between a ligand and a protein is one in which: (3 pts) A) binding of a molecule to a binding site affects binding of additional molecules to the same site. B) binding of a molecule to a binding site affects binding properties of another site on the protein. C) binding of the ligand to the protein is covalent. D) multiple molecules of the same ligand can bind to the same binding site. E) two different ligands can bind to the same binding site.

Answers

Answer:

B) binding of a molecule to a binding site affects the binding properties of another site on the protein.

Explanation:

In an allosteric interaction between a protein and a ligand, the ligand binds to a site in the protein. As a result, there is a change in the properties of other active sites on the protein. These active-site changes may or may not allow the protein to bind to other molecules. There is a change in the protein that affects the affinity of the active site for other molecules. The affinity on the active site increases if the protein binds to an activator and decreases if the protein binds to an inhibitor molecule.

what's the cell wall of a onion made up of?

Answers

Answer:

Unlike animal cells (such as cheek cells) the cell wall of an onion and other plants are made up of cellulose, which protects the cell and maintains its shape.

Answer:

cell membrane,cytoplasm,nucleus and a large Vacuole.

Explanation:

An onion is a multicellular(consisting of many cells)plant organism.As in all plant cells,the cell of an onion peel consists of a cell wall.

Describe two specialized cells in the respiratory system that enable the lungs to function?

Answers

Answer:

Respiratory epithelial cells line the respiratory tract from trachea to bronchi into bronchioles and alveolar sacs. ... The goblet cells produce and secrete mucous to trap pathogens and debris within the airway tract. Basal cells are progenitor cells that differentiate into cells types found within the epithelium.

6.Explain how animals in Vertebrata are classified into further subgroups.​

Answers

Answer:

Vertebrates are further classified according to several criteria like exoskeleton, respiratory organs, method of giving birth, number of chambers in heart, mode of living etc. They are further classified into classes Pisces, Amphibia, Reptilia, Aves and Mammals

how does a cow drink water​

Answers

Answer:

cow will line up side by side and drink

Explanation:

They have to dip their mouth in without suck- ing air at the sides of their lips.

ep 3

What Creates local winds ?

A. As hot air sinks and cold air rises winds are formed

B. As cold air sinks and hot air rises winds are formed

C. As Precipitation falls winds are formed

Answers

Answer:

B

Explanation:

hot air rises because it is less dense and cold air sinks because it is more dense. for example if he had a balloon and it was in the freezer it would shrink however if you were to leave it out for a little while it would expand.

A scientist hypothesized that oxygen atoms from both carbon dioxide and water are used to make glucose during photosynthesis. However, experimental results using oxygen isotopes showed that all of the oxygen from the water ended up in the oxygen molecules that were produced. None of the oxygen from water was found in glucose.

What should the scientist do to best gain scientific understanding of this topic?

a. Analyze the results, and change the experimental methods to retest the hypotheses in a different way.
b. Discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods.
c. Analyze the procedural errors that took place in the experiment, and summarize these in a conclusion statement.
d. Repeat the experiment and adjust new data to support the original hypothesis.

Answers

The scientist Discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods; option B.

What is an experiment?

An experiment is a research or test conducted in order to prove or disprove a hypothesis.

An experiment is conducted using steps or procedures based on an explanation given to an observation.

The results of the experiment by the scientist disproved his hypothesis.

Therefore, the scientist should discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods.

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What is the end product of glycolysis ?​

Answers

Answer:

pyruvate

Explanation:

Explanation:

The final product of glycolysis is pyruvate in aerobic settings and lactate in anaerobic conditions. Pyruvate enters the Krebs cycle for further energy production.

Use the drop-down menus to complete the hypothesis of the first group of researchers. During a drought, the decrease in rainfall will reduce the amount of vegetation that can grow and increase the occurrence of natural fires, so an elevation in Select… and a reduction in Select… should be found in the cores.

Answers

Answer:

Microscopic charcoal, Vegetation.

Explanation:

As the researchers conducting research in the Nile region identified that an increase in temperatures leads to an increase in droughts and reduction of natural vegetation and thereby the chances of the occurrence of natural fires.

Based on his job duties, what kind of support services professional is Timothy? What type of skills are critical to Timothy's work?
Timothy is a support services professional at a large hospital. His job role requires him to sometimes work with law enforcement
personnel if a security threat situation arises.

Timothy is a _
A: transport technician
B: biomedical engineer
C: head of security

The general skills that Timothy needs most are
_ skills.
A: interpersonal
B: mathematical
C: reading

Answers

Answer:

1C: head of security

2A: interpersonal

Explanation:

Timothy is the head of security and its job requires him to work with law enforcement  personnel if a security threat situation arises. Interpersonal skills are the type of skills are critical to Timothy's work. Interpersonal is relating to relationships or communication between people and we can say that this skill is important for the head of security to do his job efficiently and in a good manner.

Which is more complex and less complex organism biosphere cell ecosystem

Answers

Answer:

The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

Hope you give 5 stars

Name three kinds of prokaryotic cells

Answers

Answer:

Euryarchaeota

Crenarchaeota

Nanoarchaeota

Answer:

lactobacillus acidophilus.

Cyanobacteria.

Archaea.

Is there any plastid in mango seed?

Answers

there are no plastid in a mango seed because

Reset
Which of the following is TRUE about osmosis?
i. Osmosis is a type of active transport.
ii. Kidney dialysis is an example of osmosis process.

Answers

ii is true about osmosis

What is not an issue regarding DNA identification?
(A) It is not very reliable
(B) Having databases of millions of DNA profiles can result in more incorrect coincidental matches with partial samples
(C) There is disagreement about whose DNA should be included in the database
(D) Private information related to peoples genetic makeup could get out, which could result in discrimination against them on that basis

Answers

Answer:

(A) It is not very reliable

Explanation:

Having a database would cause lots of issues and disagreements

why us a spirogyra called a thallus ? which types of nutrition does it show ?why?​

Answers

Explanation:

a plant body that is not differentiated into stem and leaves and lacks true roots and a vascular system. hence spirogyra called a thallus.

Spirogyra is an example of Green algae , thus it prepare its own food by process of photosynthesis in presence of sunlight and chlorophyll.So, its nutrition type is Autorophic.

In 1970, Frye and Edidin published research describing the mobility of plasma membrane proteins. They fused mouse and human cells together, creating a hybrid cell, and then examined the localization of mouse and human proteins over time. Initially mouse and human proteins were each restricted to one-half of the heterokaryon, but over time the mouse and human proteins mixed, with each being present over the entire cell surface. What technique did Frye and Edidin likely use to examine the mouse and human proteins

Answers

Answer:

The answer is "fluorescent microscopy".

Explanation:

A microscope featuring fluorescence is just the same as a conventional light microscope with additional features. Conventional microscopy employs visible light (400-700 nanometers) to illuminate and generate an enlarged image data. Scientists use this highly sensitive, precise, dependable, extensively to see the location of chemicals in tissues and macrophages in organs.

When the Earth's rotation naturally brings water away from the

equator and moves cold water close to the surface Westerly

winds begin to strengthen again. What does this signal?

O A. The midpoint of the Coriolis Cycle

O

B. The beginning of El Nino

O c. The end of El Nino

OD. The beginning of an Ice Age

Answers

the midpoint of the Coriolis cycle

HELP!!!!!!!!!! Which of the following statements regarding membrane transport is false? I will mark brainliest!!!!!!!

Answers

Answer:

It is the 3rd one I believe

The Channel Islands are a series of small islands off the California coast. Each island has a genetically distinct population of foxes. Compare the population of foxes on one of these islands to the population of foxes in the forests of mainland California. Which is more likely to be impacted by genetic drift? Which is more likely to be at Hardy-Weinberg equilibrium?

Answers

Answer:

The fox population on the Islands experiences genetic drift  whereas foxes in the forests has Hardy-Weinberg equilibrium.

Explanation:

The fox population on the Islands experiences genetic drift because there is no chance of introduction of different type of foxes in these Islands which experiences less variation in the population of already existing foxes. Genetic drift is the change that occur in the frequency of an existing gene allele in a population due to random sampling of organisms. Genetic drift may cause gene variants to disappear completely with the passage of time which leads to reduce genetic variation. The foxes that is located in the mainland forest experiences Hardy-Weinberg equilibrium.

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