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Makovka662 [10]
2 years ago
6

When does crossing over occur in meiosis

Biology
1 answer:
DerKrebs [107]2 years ago
6 0

Answer:

Crossing over occurs during prophase I of meiosis before tetrads are aligned along with the metaphase I.

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help me plz Which statement best explains why cells were observed in more detail using a compound microscope than a simple micro
Gnoma [55]

Answer:

Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?

A compound microscope has greater magnification ability than a simple microscope.

Explanation:

Hope this <em><u>Helped!</u></em> :D

8 0
3 years ago
What are the 2 differences between prokaryotic and eukaryotic
Papessa [141]

Answer: One difference is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. Another difference is that eukaryotic cells have many membrane-bound organelles while prokaryotic cells have no membrane-bound organelles.

Hope this helps! :)

7 0
3 years ago
HELP ME FAST PLEASE!!!!
SVETLANKA909090 [29]
Think it’s answer D but it maybe B
hope this helps!!
sorry if it’s wrong
6 0
2 years ago
Which element is found in nucleic acids but not in amino acids
Sergio039 [100]

Answer:

Phosphorus

Explanation:

idk amino acids contain carbon hydrogen oxygen and nitrogen as well as sulfur sometimes

nucleic acids contain phosphorus as well as carbon hydrogen and nitrogen

4 0
3 years ago
If the researchers replaced the bacterial proton pump with a proton pump that was activated only by atp, what result would you p
AnnyKZ [126]

If the researchers replaced the bacterial proton pump with a proton pump that was activated only by atp then less ATP would be produced when the light is on because no proton gradient would be available to produce ATP.

<h3>What is proton gradient ?</h3>

Two quinol (4H+4e) oxidations at the Qo site result in the formation of one quinol (2H+2e) at the Qi site, creating a proton gradient (in total six protons are translocated: two protons reduce quinone to quinol and four protons are released from two ubiquinol molecules).

For the ETC to continue functioning, the energy trapped in the electrochemical gradient of protons across the inner mitochondrial membrane must also be released in some manner. ATP is created using the energy in the proton electrochemical gradient.

Chemiosmotic coupling is the process by which ATP synthesis is coupled to the electrochemical gradient of H+ across the inner mitochondrial membrane.

Peter Mitchell, who in 1961 made the initial suggestion, was given the Nobel Prize for his efforts in 1978.

To learn more about proton gradient from the given link:

brainly.com/question/28046848

#SPJ4

4 0
1 year ago
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