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Reika [66]
3 years ago
14

What best describes a centromere

Biology
1 answer:
lorasvet [3.4K]3 years ago
8 0
The region of the chromosomes to which the spindle fiber is attached during cell division...both mitosis and meiosis.  Its the constricted point at which 2 chromatids forming the chromosomes are joined together 


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A cell membrane consists of a lipid bilayer, which is a double layer of phospholipids. Each phospholipid has a hydrophilic phosp
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Answer:

it prevents for things to go in and out of it, kinda like a cell membrane.

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3 years ago
Which component is released from the active site of an enzyme during a chemical reaction?
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PRODUCT is the component that <span>is released from the active site of an enzyme during a chemical reaction.

Products are formed from the reaction of the substrate caused by the changes that happens to it after it bonded with the enzyme. They are then </span><span>released from the enzyme surface to regenerate the enzyme and prepare it for another reaction cycle.</span>
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Humans have cut and frayed the woven tapestry of Earth's biodiversity. List and describe three ways.
miv72 [106K]
  •  Adding cement

to the ocean to increase the land surface area by excavating soil from the

maintains.

  •   Landscaping.

By landscaping, living things such as trees are eliminated to make way for the

construction of buildings. And thus, disrupting the ecosystem.

  •  Cutting trees

Three ways that humans have cut and frayed the woven tapestry of earths

biodiversity:

5 0
4 years ago
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When restriction enzymes do not cut straight across the two strands of DNA, a tail of unpaired bases branch out at the ends. The
CaHeK987 [17]
The correct answer is C. sticky ends
8 0
3 years ago
the area around a cell has a high concentration of sodium ions. as a result, the cell membrane expands and bursts. which problem
Crazy boy [7]

Answer;

B. the cell was unable to maintain a stable internal environment.

Explanation;

-A sodium ion imbalance could cause water to rush across the cell plasma membrane in either direction. Too little water makes the cell shrivel up; too much water makes it burst. The balance between water and electrolytes, such as sodium ions, controls cell integrity.

-Electrolytes are molecules that influence cell fluid regulation. Sodium is the most abundant electrolyte. Too much sodium in the surrounding fluid - or too little in the cells - sucks too much water out of the cells.

-Too little sodium in the surrounding fluid - or too much within the cells -causes cells to swell as their higher sodium concentration draws too much water in, which eventually causes cell and organelle membranes to burst.

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3 years ago
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