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Alisiya [41]
3 years ago
7

Compare diffusion and facilitated diffusion

Biology
1 answer:
Alex787 [66]3 years ago
7 0
Diffusion is the movement of molecules from an area where the molecule is in high concentration to an area where the molecule is in lower concentration. Facilitated diffusion is the movement of a molecule from an area of high concentration to an area of lower concentration with the help of a protein channel or carrier.
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How do stem cells maintain their populations within tissues?
AURORKA [14]

The stem cells divide through mitosis making two daughter cells. One daughter cell becomes a stem wall, and the other daughter cell  differentiates into the tissue, so therefore stem cells maintain their populations because mitosis produces a daughter cell that differentiates, as well as one that self-renews, remaining a stem cell. Good luck, and hopefully this helps you out!

7 0
4 years ago
Which of the following gives rise to the skin cells?
zubka84 [21]

Answer:

Ectoderm

Explanation:

Of the three primary germ layers in the very early embryo, the ectoderm is the one that gives place to the epidermis (epidermic skin cells).

The mesoderm will develop into muscle and bone, while endoderm turns into the lungs, stomach and other organs.

8 0
3 years ago
The frequency of alleles in a population that is in hardy Weinberg equilibrium
Olenka [21]
I don't get your question, this can be helpful though To explore the Hardy-Weinberg equation, we can examine a simple genetic locus at which there are two alleles, A and a. The Hardy-Weinberg equation is expressed as: p² + 2pq + q² = 1. where p is the frequency of the "A" allele and q is the frequency of the "a" allele in the population. Goodluck
8 0
3 years ago
Read 2 more answers
How can a catastrophic global event influence evolutionary change? Group of answer choices Undesirable versions of genes are rem
ExtremeBDS [4]

Answer:

Only some species may survive the event

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Evolution is most likely to occur when catastrophic events alter community composition. Catastrophic global event can influence that only the hardiest, generalist species may survive. Specialists may be left without food and starve.

8 0
3 years ago
The diagnostic term "in/continent" literally means _________ and is seen with the lack of control of the bladder and/or rectum.
ELEN [110]
The diagnostic term "in/continent" literally means Not contained and is seen with the lack of control of the bladder and/or rectum. Incontinent is the inability to control excretions, to hold urine in the bladder, or to keep feces in the rectum. For example the urinary incontinence is a common and embarrassing problem that occurs more often as people get older.
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4 years ago
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