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Finger [1]
3 years ago
13

What is a factor that controls the rate of cell division?

Biology
2 answers:
Vesnalui [34]3 years ago
4 0
Kinases and Cyclins are Internal Factors that Regulate Division. When cells reach a checkpoint within the cell cycle, whether they continue division or abort the process is regulated by cyclin-dependent protein kinases.
Ugo [173]3 years ago
3 0

Answer:

Mitogens

Explanation:

Mitogens: proteins that turn off negative signals that are blocking cell division.

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Which of the following is not true regarding the denaturation and reannealing of double-stranded DNA molecules? Which of the fol
aleksley [76]

Answer: "Decreasing the salt concentration of the solution lowers DNA's melting point (Tm)" is not a true statement

Explanation:

Increasing salt concentration would lower the DNA's melting point (Tm), not otherwise.

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4 years ago
What are the characteristics of Paranthropus?
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Key physical features. All three species share similar physical characteristics - a relatively small body and a 'robust' or strongly built skull including large lower jaws with extremely large molar teeth.

4 0
3 years ago
bacteria culture starts with 400 bacteria and grows at a rate proportional to its size. After 4 hours, there are 9000 bacteria.
yawa3891 [41]

Answer:

A) P = P_0 e^{rt}

B) 19564

C) 5.5 or 6 hours

Explanation:

A) The formula that can be used for bacteria after "t" hours is

P = P_0 e^{rt}

Where ,

P represents the population after "t" hours

P_0 represents the initial population.

r represents the rate of growth of population

t represents the time taken by the population to grow

B) Here let us first find the rate of population growth.

9000 = 400 * e^{r*4}\\3.11 = r* 4\\r = 0.778

Thus, the population of bacteria after 5 hours

P = 400 * e^{0.778 * 5} \\P = 400* 48.91\\P =  19564\\

C)

30000 = 400 * e^{0.778 * t) \\\\4.317 = 0.778 * t\\t = 5.549\\or t= 5.5 or 6

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4 years ago
What kind of plant is this?
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Nephrolepis cordifolia or fern

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3 years ago
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