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lara [203]
3 years ago
13

Checkpoints are points between phases of the cell cycle at which a cell determines whether all the requirements necessary for ea

ch phase of the cell cycle have been properly satisfied. For example, because a cell with damaged DNA can lead to cancer if it is allowed to divide, a cell with damaged DNA usually arrests the cell cycle until the damage can be repaired. At which phase(s) of the cell cycle would a cell normally check for the integrity of its DNA
Biology
1 answer:
Sedaia [141]3 years ago
5 0

Answer:

The correct answer is - at the G1/S phase and G2/M phase.

Explanation:

The G1/S transition phase or checkpoint is a phase where the cell cycle arrested if during the evaluation of the DNA found damaged or other factors including external factors. Due to this evaluation and inadequate conditions, the cell will not enter the S phase.

The G2/M phase or transition phase is a checkpoint which takes place just before the M phase that ensures that all replicated DNA is not damaged before entering mitosis phase or M phase.

Thus, the correct answer is - at the G1/S phase and G2/M phase.

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Which brain structure receives information from all the senses except smell?
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The brain structure that receives information from all the senses except smell is the thalamus. This is located above the brain stem of the brain in which is a small structure that is responsible for having to receive or pass sensory signals to the brain’s cerebral cortex.

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Which of the following statements is true? Animal cells cannot produce food. Both plant and animal cells can produce food. Some
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Animal cells cannot produce food is the true answer.
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On a trip to the beach, Jacob noticed many signs that read "Keep off dunes." His mother told him that walking or digging on the
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Answer:

C

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The roots of the grass hold the dunes together

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What is the correct order of levels of organization in an organism, from the least complex to the most complex?
In-s [12.5K]
The answer is letter D. 

<span>The levels of organization of life from the least complex to most complex are enumerated below:<span>
a. Organelles - the basic part of a living organism. It refers to the different structures of the cell, whether prokaryotic or eukaryotic. (Ex. Mitochondria, nucleus)
b. Cells - building blocks of life that are composed of different molecules responsible for the function of an organism. (Example: prokaryotic, eukaryotic cells)
c. Tissues - combinations of cells that carry out a specific function in an organism. (Example: Human skin)
d. Organs - collections of tissues that perform specific functions. (Ex. heart, lungs)
e. Organ Systems - composed of interconnected organs that function as a whole. Many organisms, particularly mamamals, are composed of organ systems. (Ex. respiratory, circulatory systems)
f. Organisms – individual entities that specifically make-up a population. (Ex. Each tree in the forest is an organism, each animal in sea is an organism)</span></span>
g. Population – species living within a specific location. It could be the same or different species that inhabit a place. (Ex. Birds are species in the forest as well as bears)
h. Community – refers to the total number of populations that inhabit a specific location. (Ex. All of the trees, insects, birds that inhabit the forest are a community)
i. Ecosystem – consists of all living things that function together as a group which also includes the non-living parts of the environment. (Ex. Rain water, nitrogen in the soil)
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6 0
3 years ago
Tricuspid vale stenosis results when the tricuspid valve dosent open completely during ventricular systole atrial diastole ventr
Ghella [55]

Answer:

Hello!

The answer is ventricular diastole.

Explanation:

Tricuspid Valve Stenosis:

Tricuspid Valve Stenosis is the narrowing or stenosis of the tricuspid valve located between the right atrium and right ventricle.

This is a rare heart disease that can be caused by infective endocarditis and rheumatic fever.

This condition entails restricted blood flow from the right atrium to the right ventricle. Untreated cases can result in an enlarged or hypertrophied atrium and a smaller ventricle.

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3 years ago
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