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3 years ago

How does facilitated diffusion differ from simple diffusion?

1 answer:

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Each method of passage through the cell membrane might be useful to different molecules. Facilitated diffusion is passive transport that uses integral membrane proteins to help larger, charged, hydrophilic, and polar molecules across a concentration gradient.

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Last week, you looked at both animal & plant cells. Both of these cells were ______. This week, you'll be looking at a diffe

Inga [223]

Answer:

"Last week, you looked at both animal & plant cells. Both of these cells were diploid somatic eukaryotic. This week, you'll be looking at a different, but very important, type of cell: sexual cells. Two gametes, one from a female & one from a male, merge during the process of fecundation/fertilization to form a zygote. All in the organism will develop from this initial diploid cell".

Explanation:

There are two principal types of cells in the organism: Somatic cells that can not form any gametes, and germ cells that are in charge of gamete production. Both somatic cells and germinal cells will end their cycle dividing and becoming two daughter cells with the same genetic dotation after mitosis.

Somatic cells are any cell in the body excepting from sperm and egg cells. These somatic cells are diploid, they contain two chromosomes sets, each one inherited from each parental. Mutations in somatic cells affect the individual but the progeny does not inherit them. In this sense, these cells do not contribute to anything to inheritance terms through genetics.

Germ cells are the reproductive diploid cells, and the sexual organs (testes and ovaries) are the ones that produce them. These cells might suffer mitosis to form more sexual cells, and then a few of them suffer meiosis giving place to haploid gametes called sperm and egg cells through the gametogenesis process. Each germ cell produces 4 haploid gametes after meiosis.

Gametes´destiny is to merge in the process of fecundation, during which a new diploid cell called zygote emerges through fertilization. The zygote is a complete cell from the structural point of view that suffer successive mitosis to form the new organism.

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3 years ago

Repeating the experiment multiple times

nalin [4]

Answer:

C) Practicing good scientific method and practices.

Explanation:

The text states, "repeating the experiment multiple times," as well as other preparations that a good scientist uses.

Doing something multiple times over is a good sign of a good scientific method.

Taking careful measurements, having several researchers run the same experiment, and only testing one variable at a time are all good practices that a scientist should use.

 The correct answer is C).

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3 years ago

Read 2 more answers

What is a non-functional doner cell

aliya0001 [1]

Answer:

An individual organism that supplies living tissue to be used in another body, as a person who furnished blood for transfusion or an organ for transplantation in a histocompatible recipient that doesnt function.

Explanation:

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3 years ago

Which statement about anaerobic respiration is true?

Nikolay [14]

Answer:

Explanation:

C-Anaerobic respiration is used commercially in the production of beer, wine, bread, yogurt, and cheese.

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3 years ago

four plants sitting in the window are beginning to lose their leaves, im thinking that if i move them to a sunnier window, they

noname [10]

Answer:

Hypothesis

Explanation:

Since you are thinking it/guessing it with the knowledge you already have I think it’s hypothesis.

This is the definition of hypothesis if it helps: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

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3 years ago