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marissa [1.9K]
3 years ago
8

Which of these checkpoints determines if cell division has occurred properly?

Biology
1 answer:
Goryan [66]3 years ago
7 0
Cell division has two checkpoints namely, G1 checkpoint and spindle assembly checkpoint. The checkpoint which determines if division has properly occurred is the G1 checkpoint. At this point, is a damage in the DNA is detected or the has not reach the optimum size, the cell is stopped in G1 and is not allowed to proceed to further process.
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What is the role of phytoplankton in a pond ecosystem?
lyudmila [28]
Plankton exists near the bottom of the ocean's food chain and provides nutrition for whales, shrimp, snail, and jellyfish. Plankton also plays an important role in the carbon cycle by removing inorganic carbon dioxide due to photosynthesis. 
4 0
3 years ago
Emily is given an object by her grandmother. She is told it is worth a lot of money. Emily thinks it is quite ugly on the outsid
Darya [45]

Answer:

Rock

Explanation:

Minerals are inorganic substances that occur naturally in nature and have a  

a definite chemical composition and a crystalline structure while rocks may consists of one or many minerals together along with some organic remains due to which it may not look shiny and crystalline from outside.  

Here, the two characteristics that enable the reader to identify the object given by grandmother to Emily as rock  are –  

a) Looks ugly on the outside (shows the presence of organic matter)

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3 years ago
Peridotite, which is composed almost entirely of dark silicate materials and is believed to make up much of earths upper mantle,
HACTEHA [7]

I believe the answer is Ultramafic

3 0
3 years ago
Read 2 more answers
The sudden death of brain cells when their blood supply is interrupted is called
barxatty [35]
The only correct answer in this case is B - a stroke.

None of the other answers could be counted as correct here. 

While A - a heart attack is conceptualy similar, when we're talking about a heart attack, we're talking about not enough oxygen that gets delivered to the heart - because something is blocking it. 

C - hypertension on the other hand means someone has a higher blood pressure than is usual for a regular human being, which puts more strain on his cardiovascualr system. 

and D - atherosclerosis doesn't come even close to be correct :)
3 0
3 years ago
Read 2 more answers
9. Which molecule loses electrons in cellular respiration ? A glucose B carbon dioxide C oxygen D water
Readme [11.4K]

Answer:

A. glucose

Explanation:

In cellular respiration, electrons from glucose move gradually through the electron transport chain towards oxygen, passing to lower and lower energy states and releasing energy at each step.

7 0
3 years ago
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