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babymother [125]
4 years ago
8

Which is an example of temporal isolation?

Biology
1 answer:
Tom [10]4 years ago
4 0

Answer:

A. flowers that bloom in different months

Explanation:

Temporal isolation is a prezygotic barrier that is caused by the inability of two closely related species to interbreed as a result of differences in breeding season.

If two related species of plants have flowers that bloom in different months, the possibility of both fertilizing each other is very slim. Both flowers won't be able to interbreed as a result of this reproductive isolation mechanism, called temporal isolation.

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With this new concept in your students' minds, you can now begin discussing how cells can utilize dehydration synthesis and hydr
Anna35 [415]

The biosynthesis of fatty acids and lipids meets two imperatives in the

cell :

- supply of fatty acids necessary for the synthesis of structural lipids;

- storage of energy.

The synthesis of fatty acids goes through a dehydration step during its synthesis. and its catabolism goes through a hydration stage, which shows the importance of H2O molecules to build lipids (even cholesterol).

Synthesis of the fatty acid:

firstly, acetyl-ACP and malonyl-ACP were condensed, followed by reduction of acetoacetyl-ACP to β-hydroxybutyryl-ACP, followed by dehydration of β-hydroxyacyl-ACP, and finally reduction of the double bond by NADPH + H

Catabolism:

The reverse steps will occur: a beta oxidation, a hydration of the molecule, and finally another oxidation.

3 0
3 years ago
How many ovaries does a flower have?
VMariaS [17]
There is about 2 ovaries in a flower.
3 0
3 years ago
Read 2 more answers
Which of the following sequences is correct for the downhill movement of electrons during cellular respiration? A. glucose – cit
Volgvan

Answer:

B. glucose – NADH – electron transport – O2

Explanation:

This is the sequence  from glycolysis in which  glucose molecules are split down to pyruvate, to oxidative phosphorylation.

During this process the electrons are released from glucose  molecule as it is oxidised multiple times as pyruvate, and other molecules formed subsequently in Kreb's cycle, until the oxidative phosphorylation is reached .

The makes the  carrier molecules to be reduced.Thus NAD→NADH,FAD→FADH .

The electrons from above are  transferred in hydrogen atoms  to matrix by these co-enzymes.Where the H is split to electrons  and protons.

The electrons for the ETC, produce the PMF for transporting  protons into the intramembrane space.

The concentration of protons generated the electrochemical gradients  which is needed to produce energy for for phosphorylation of ADP with Pi to form ATP by ATpase synthase.

The electrons moves as chain,and this is finally accepted by oxygen as the final electron acceptor.

3 0
3 years ago
When an organism actively perturbs the environment in ways that modify the selection pressures experienced by subsequent generat
sattari [20]

Hello there

the answer is Niche construction

Hope this helps

Best Regards Queen Z

5 0
3 years ago
What does the place theory of pitch perception suggest? different amplitudes of the basilar membrane are sensitive to sounds of
kodGreya [7K]
Answer;
The pitch perception suggests that <span>different portions of the Basilar membrane are sensitive to sounds of different frequencies.

Explanation; 
</span><span>According to the place theory; different portions of the basilar membrane are sensitive to sounds of different frequencies.
The base of the basilar membrane responds best to high frequencies and the tip of the basilar membrane responds best to low frequencies. Therefore, hair cells that are in the base portion would be labeled as high-pitch receptors, while those in the tip of basilar membrane would be labeled as low-pitch receptors.</span>
8 0
3 years ago
Read 2 more answers
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