Which of the following is not a factor that helps create the stomach mucosal barrier?A. thick coating of bicarbonate-rich mucus
B. tight junctions of epithelial mucosa cells
C. replacing of damaged epithelial mucosa cells
D. rennin

Answers

Answer 1
Answer: Rennin is not a factor that helps create the stomach mucosal barrier, whereas thick coating of bicarbonate-rich mucus, tight junctions of epithelial mucosa cells, and replacing of damaged epithelial mucosa cells are.

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Which best describes the difference between osmosis and diffusion

Answers

Osmosis is the specific movement of solvent molecules through a semi-permeable membrane, while diffusion is the general movement of particles from high to low concentration in any medium.

Osmosis and diffusion are both fundamental processes of passive transport. Osmosis is a subset of diffusion that specifically involves the movement of solvent molecules, usually water, through a semi-permeable membrane to equalize solute concentrations on both sides of the membrane. It's essential in processes like maintaining cell turgidity.

On the other hand, diffusion encompasses the broader concept of particles, including solutes and gases, spreading out from areas of high concentration to low concentration. It occurs in various environments, not limited to membranes, and is vital for processes like gas exchange in respiration and the distribution of nutrients in cells.

To learn more about Osmosis here

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Which best describes the difference between osmosis and diffusion?

Diffusion is the movement of particles from a high to low particle concentration, while osmosis is the movement of water from a high to a low water concentration

Hope this helps, have a BLESSED and wonderful day! c:

Cyanobacteria, unusual worm like life-forms and marine organisms did not exist in Precambrian Time.

Answers

The statement is False.

Precambrian Time spans from about 4.6 billion years ago to about 540 million years ago. Fossils of some bacteria and cyanobacteria are an evidence that the life existed in Precambrian Time. They were the first organism that showed about 3.5 billion years ago. These unicellular organisms lived in the oceans. The first multicellular organisms evolved many years later, around 700 million years ago. Some fossils suggest the presence of some jellyfishes and worm-like forms that lived in the oceans. The land was not settled in the Precambrian time.

Answer:

False

Explanation:

I just took the test

Coal is the biggest source for _________.A).transportation
B).gas stoves
C).heating homes
D).producing electricity

Answers

Coal is the biggest source of energy for the generation of electricity.
so the answer is D) producing electricity :))))
I hope this is helpful
have a nice day

What's the source code of transcription

Answers

I assume here that you mean the transcription of DNA to RNA (which already answers your question! the source is the DNA!)  DNA is the genetic code kept in the nucleus. It must be copied (transcription) to RNA which  caries to the ribosomes, which will read the code.

Which type of water is the least dense? A.
warm, salty water

B.
warm water with no salt

C.
cold water with no salt

D.
cold, salty water

Answers

B, cold with a high salt content, I believe. Since density is mass divided by volume, adding salt would increase mass. Temperature is related to kinetic energy and the distance between molecules/atoms of a substance. The hotter the substance, the more distance there is between particles. Generally cold water is more dense. Hope i helped :D


A botanist observes a large population of a particular type of beetle eating the leaves of one tree but not the leaves of a nearby tree. What should the botanist do first to study the interaction of these organisms in the ecosystem?

Answers

Answer:

The botanist should make an hypothesis for your observation (the interaction between population of beetle and leaves of trees)

Explanation:

According to the scientific method, the first step is to make observations about some process or system. In the present case, the botanist observes a large population of a particular type of beetle eating the leaves of one tree but not the leaves of a nearby tree.

Once an observation was made, the second step is to write an hypothesis that suggest something about the observation (for example beetles choose that trees that have more palatable leaves, or leaves with particular compounds).

After the ywo mentioned steps, the botanist can plan an experiment, execute it and so on.

Answer:

B

Explanation:

EDGE 2021