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goldfiish [28.3K]
2 years ago
10

When examining cells in the laboratory, you notice that a particular cell has half as much DNA as the surrounding cells. It appe

ars that this cell's cell cycle halted at checkpoint _____.
Biology
1 answer:
kow [346]2 years ago
4 0

Answer:

G1 checkpoint

Explanation:

The cell cycle consists of the series of activities that occurs from the replication of DNA to the actual division of the cell in an organism's cell. However, the cell has been internally programmed to ensure that all conditions are in place/favorable before allowing progression into the next stage of the cell cycle. This internally controlled mechanism ia called CHECKPOINTS. This checkpoint occurs at three main stages of the cell cycle;

after G1 phase, G2 phase and during M phase.

In the G1 checkpoint, the cell ensures that the cell is in the right shape to proceed into the Synthesis phase of the cell cycle where it will double it's DNA. The checkpoint checks majorly for damage or change to the DNA before replicating it. If any error is found, that cell is halted and prevented from proceeding to the S-phase of the cell cycle.

This is the case in the question, the cell has been halted and prevented from entering the S-phase. Hence, its DNA is still the same as it started. However, the DNA of the cells surrounding it has been doubled as they have undergone DNA replication during S-phase.

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Good morning guys....
ololo11 [35]
The answer is d b/c smaller cells will have greater surface area to volume ratio
5 0
3 years ago
Knowing what we know about the link between genetics, environment and intelligence, what would be your expectations if you were
Vesnalui [34]

Answer:

I would expect them to perform similar.

Explanation:

Studies suggest that intelligence has a genetic component and can, in part, be passed from parent to child - but not only that. There are outer components that contribute to the formation of intelligent individuals. Better nutrition and more access to education would be possible explanations for the progressive increase in intelligence test scores over time.

Homozygous twins are those that are mainly characterized by similarity between individuals. These twins are formed from the same zygote, ie after the fertilization process. Because of this characteristic, they have the same genetic heritage and are therefore considered identical.

As the homozygous twins in their classroom have the same genetic heritage and attend the same environment, we can conclude that their intelligence is influenced by the same factors. For this reason, a teacher who taught these two brothers might have expectations that they would perform similarly in the classroom.

6 0
3 years ago
Ninhydrin is used on a latent print to detect
oksano4ka [1.4K]
I think it is D I’m not sure
7 0
2 years ago
Discuss how microbial world is divided providing at least two unique features of each of the living group
Maksim231197 [3]

Microorganisms can be divided into two groups:


1. Archea


• Archea are prokaryotic unicellular organisms without cell nucleus or other membrane bound-organelles.  


• Their membrane is built from ether lipids, which differs them from bacteria’s cell membrane.


•  


2. Bacteria


• Bacteria are also unicellular prokaryotic organisms.  


• Bacterial cell membranes are made from phosphoglycerides with ester bonds. Bacterial genome is in a form of circular chromosome.  


• They reproduce by binary fission or by budding.


Besides, prokaryotes (Archea and Bacteria) a large number of eukaryotes are also microorganisms. Unicellular eukaryotes contain organelles such as the cell nucleus, the Golgi apparatus and mitochondria. Usually, they reproduce asexually by mitosis. An example of eukaryotic microorganism is Protist.



4 0
3 years ago
Why do you think the dna is stored cold with the instagene matrix after boiling the samples?
seropon [69]
<span>The DNA is stored cold with the instagene matrix after boiling samples in order to slow bacterial growth. In that way, you will greatly slow down the activity of any remaining enzymes that could harm your DNA. Most likely it is a way of preserving the DNA and to avoid it bacterial contamination.</span>
6 0
3 years ago
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