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Anestetic [448]
2 years ago
6

DNA is shaped like a twisted ladder. What do we call this shape/structure? pick the the correct answer.

Biology
1 answer:
Harrizon [31]2 years ago
7 0

Answer:

The answer is 3. Double Helix.

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Katyanochek1 [597]

Destruction of coral reefs would cause an imbalance in the ecosystem. Some species could be driven to extinction.  

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5 0
3 years ago
What pigment replaces chlorophyll in
Lostsunrise [7]

Answer:

A. Carotene

Explanation:

It is an orange/red pigment which is seen during the fall.

6 0
3 years ago
Where is the urine stored before micturition from the body?
GaryK [48]
Urine is stored in the Bladder before it leaves the body.
8 0
3 years ago
The ____________ functions as a gateway through which chemicals and small particles, such as ____________ enter or leave the cel
Vilka [71]

Answer: cell membrane

such as water, micro-organism

physical process

simple diffusion, osmosis and filtration

such as potasssium permaganate in water,urea a liver waste diffuses from the body and the kidney help in filtering it out

physiological processs

active transport, phagocytosis and pinocytosis

such as soduim-potassium pump, exocytosis

Explanation:  transportation in and out of cell is done in different ways listed above but a barrier to this movement is the cell membrane which is an outer covering of the cell. it protect the cell and only some materials can penetrate the cell membrane e.g micro-organism, water e.t.c. the various physical and physiological processes are the various ways substance  cna be liquid, solid or gas are transported within or outside the  cell e.g food

6 0
3 years ago
The respiratory zone is the only site of gas exchange within the lungs. the respiratory zone is the only site of gas exchange wi
34kurt
I think its false because gas exchange can happen in blood also 
4 0
3 years ago
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