Answer:
Given that ,
Mass of object , m=8kg
Velocity of object , v=4s
Kinetic energy of object , K=
2
1
mv
2
=
1/2×8×4^2
=64 N
Answer: option D
The sodium potassium ion exchange move sodium and potassium in opposite direction in electrochemical gradients.
Explanation:
The sodium potassium pump is found in many animals plasma membranes and its moves the sodium and potassium ion in opposite direction across the plasma membrane with the hydrolysis of ATP(adenosine triphosphate) to supply the needed energy. It is an active transport process.
It's the Immune system!
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Answer:
The tundra ecosystem is one of the coldest ecosystem on the earth, which has few trees, high winds, much snow, and low rainfall. Some of the species found in that environment are arctic foxes, caribou, and polar bears.
Explanation:
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In reproductive cells so the answer is A and B
