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Marina CMI [18]
3 years ago
12

A model cell with damaged DNA was created to explain the importance of checkpoints in a cell cycle.The G2 checkpoint accidentall

y Failed to work during experimentation.What do you think is the likely consequence of this failure?
a. this cell divided in created two cells with repair DNA
b. the cell couldn't divide in the cell division stopped
c.The cell died before it could complete division
d. The cell divided and created nonidentical cells
e.The cell continued to divide uncontrollably to create more damaged cells
Biology
2 answers:
mrs_skeptik [129]3 years ago
8 0
E is the Answer ! <span>The cell continued to divide uncontrollably to create more damaged cells</span>
topjm [15]3 years ago
6 0

The right answer is E.

The G2 phase control point acts for the cell so that mitosis is not triggered until the replication is fully completed or until the lesions detected in the replicated DNA are repaired. For this, the intervening molecules will block the activation process of Cdk1.


Thus, the Cyclin B / Cdk 1 complex retains its inhibitory phosphorylations, or is blocked by p21, until the replication is complete: no mitosis begins before the end of the replication.


If the DNA is damaged, or if the replication is not completed, the activation of several inhibitory pathways of the Cdk 1 / Cyclin B complex makes it possible to prevent the entry into mitosis. If this inhibition is absent, then the mitosis is triggered.

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Answer:

D. lower yields of fruit crops, due to decreased pollination

Explanation:

Pesticides are used to kill or stop the growth of insects that are harmful for crops but use of pesticides reduces biodiversity by killing a wide variety of insects.

Insects are one of the important component participate in the process of pollination that increases the biodiversity. insects move from one flower to other flower and spread pollen for reproduction. Due to pesticides some of the insects important for pollination got killed and reduces the pollination process. If pollination process will decrease, it will impact lower rate of reproduction of fruit crop.

Hence, the correct option is "D. lower yields of fruit crops, due to decreased pollination".

6 0
4 years ago
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Korvikt [17]

Meiosis: A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.

<span>Mitosis:<span> A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.</span></span>

<span>Heredity: T<span>he passing on of physical or mental characteristics genetically from one generation to another.</span></span>

5 0
4 years ago
Three kinds of _________ molecules carry out genetic instructions for the production of proteins?​
Alexxandr [17]
Answer:

There are three types of RNA involved in protein synthesis:
messenger RNA (mRNA)
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Explanation:

All three of these nucleic acids work together to produce a protein. The mRNA takes the genetic instructions from the nucleus to the cytoplasm, where the ribosomes are located.
7 0
2 years ago
Drag the labels onto the diagram to identify the stages of cellular respiration.
fomenos
Where is the picture of the diagram
4 0
3 years ago
Living things should not be viewed under a(n) _____ because the preparation process would kill them.
FinnZ [79.3K]

Answer:

Electron Microscope

Explanation:

In contrast to light microscopes, electron microscopes use a beam of electrons instead of a beam of light. Not only does this allow for higher magnification and, thus, more detail, it also provides higher resolving power. The method used to prepare the specimen for viewing with an electron microscope kills the specimen. Electrons have short wavelengths (shorter than photons) that move best in a vacuum, so living cells cannot be viewed with an electron microscope.

8 0
3 years ago
Read 2 more answers
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