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nevsk [136]
3 years ago
6

In a biology lab exercise, you are asked to examine cells of a growing onion root tip, that has been sectioned to show many cell

s. in most of the cells, you easily see the circular or oval nucleus as a uniformly filled space in a membrane outline. in a small percentage of cells, you see chromosomes as distinct strands just as cell division begins, and as it progresses, because the chromatin:
Biology
1 answer:
harina [27]3 years ago
6 0

Because the chromatin condenses into compacted chromosomes.

<span>During mitosis, chromatin condenses starting from the prophase to the end of cell division. Condensation of chromatin protects the DNA during cell division and facilitate its mobility and transport. </span>

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what is meant by an atp cycle and why is it important, frequent event in cells? how does this involve adp
polet [3.4K]

ATPs are the power cell of a cell. Just like a cell, they need to be charged before they can deliver power.

<h3><u>Explanation:</u></h3>

ATP or the Adenosine Triphosphate is a complex molecule containing a Adenine nitrogen base, a ribose sugar and three phosphates being attached with each other in a chain. Adenosine Triphosphate is the power currency of a cell. It just acts like a rechargeable battery. The metabolic and physiological processes of a cell that needs energy, involves the hydrolysis of ATP into ADP and Pi which are Adenosine Diphosphate and Inorganic phosphate respectively.

Now the ATP is discharged and needs to be charged. So the ADPs are charged into ATPs by different processes of respiration  like Glycolysis, Kreb's Cycle, Electron Transport Chain etc.

Both the hydrolysis and the condensation of ATP makes the ATP cycle.

5 0
3 years ago
What do people use energy for?
olga nikolaevna [1]

Answer:

it depends what kind of energy your taking about, like human energy or nonrenewable energy. If it is human energy then the option c, but if it is nonrenewable energy than b.

Explanation:

the other options aren't very logical

3 0
3 years ago
A scientist wants to study the enzymes of the citric acid cycle in eukaryotic cells. what part of the cell would she use as a so
Temka [501]
The part of the cell would she use as a source of these enzymes is the mitochondrial matrix. It contains <span>he mitochondria's </span>DNA<span>, </span>ribosomes<span>, soluble </span>enzymes<span>, small organic molecules, nucleotide cofactors, and </span>inorganic ions<span>. Thank you for posting your question here. I hope the answer helps. </span>
4 0
3 years ago
Ozone is formed when _______. a. two oxygen molecules combine b. an individual oxygen atom combines with an oxygen molecule c. u
BARSIC [14]
Yea the answer would be B
7 0
3 years ago
Read 2 more answers
How was bipedal locomotion important to hominin evolution?
WITCHER [35]

Answer:

Bipedalism freed the hands so they could be used to cart food,  make and use weapons and other advantages of freed hands.  Bipedalism is a much more efficient way to walk and run and this  fact is quantified.  Bipedalism raised the early proto-human above the horizontal so  he could see predators approaching.  Bipedalism is a much more efficient design to cool down  overheating bodies.

your welcome :)

3 0
3 years ago
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