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natali 33 [55]
3 years ago
7

What is th the purpose of the spiral intestine In a shark

Biology
1 answer:
sergeinik [125]3 years ago
8 0
It is twisted to create a greater surface area for digesting and to increase the nutrient absorption.
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Plant shrinks when places in saltwater due to osmosis of?
aivan3 [116]
Water.

osmosis always refers to the diffusion of WATER down a concentration gradient.

diffusion can be applied to any substance;
osmosis only applies to the diffusion of water.

in the situation described, osmosis occurs by water diffusing out of the plant, down the diffusion gradient (because the salt water effectively has a lower concentration of water than in the plant) and into the salt water.
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What happened at the end of the most recent ice age?
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(B.) Sea levels rose over 300 feet

I think

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The evidence from our theory on evolution comes from... *
madreJ [45]
I’m pretty sure it’s A
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Suggest an intracellular regulatory molecule (from your text) that growth factors might stimulate to control cell division. Plea
vlabodo [156]

Answer:

E2F transcription factors  

Explanation:

The E2F transcription factors (TFs) encode intracellular factors associated with the control of the cell cycle. E2F are TFs that bind to promoter consensus sequences in order to activate transcription. These TFs control the expression of target genes involved in cell proliferation including, among others, genes for DNA replication and mitotic activation. Moreover, the E2F proteins also may act as a link between cell fate and the cell cycle. The retinoblastoma (Rb) is a protein that modulates the activity of the E2F family of TFs, and it has been shown that the Rb/E2F pathway is a key molecular mechanism associated with cell proliferation.

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3 years ago
In studying the gene pool of a population, you find that 21% of the population exhibits the recessive trait for eye color and th
Naily [24]
In order to solve this problem we use these formula:
<span>p2 + 2pq + q2 = 1p + q = 1p = % dominant allele in the population
q = % recessive allele in the population
p2 = % homozygous dominant individuals
q2 = % homozygous recessive individuals
2pq = % heterozygous individualsFrom the given, we haveq2 = 21%Simply taking the square root,q = 4.58%</span>
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3 years ago
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