I am pretty sure it is false
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Answer:
The correct option is A
Countercurrent multiplication is the process whereby energy is used to generate an osmotic gradient in which water is reabsorbed from the tubular fluid to produced concentrated urine.
Explanation:
Countercurrent multiplication moves sodium chloride from tubular fluid into interstitial space deep within the kidneys. The concurrent multiplication process build up osmotic gradient interstitial fluid in a single effect. Here, sodium chloride is driven by active transport out of the tubular fluid in the thick ascending limb into the interstitial fluid, which becomes hyperosmotic. This result to water moving passively down its concentration gradient out of the tubular fluid in the descending limb into the interstitial space to a point where it attains a state of equilibrium.
Therefore,the correct option is A, where the ions leaves the ascending limb to make water comes out of descending limb.
The tetanic contraction of muscles help to lift objects heavier than our body weight by generating force, overcoming resistance.
<h3>What is muscle?</h3>
Muscle is defined as group of tissue combined together in order to form muscles and muscles are the structure maker of the body it means it provide proper structure to the body.
Muscle contraction has been defined as an action potential that travels along with the nerves to the muscle. The beginning of the muscle contraction occurs with signal generated from the nervous system.There are mainly two types of muscle contraction and the situation occur when a muscle contracts and the change in size takes place.
Therefore, The tetanic contraction of muscles help to lift objects heavier than our body weight by generating force, overcoming resistance.
Learn more about muscle here:
brainly.com/question/11087117
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Answer:
256.
Explanation:
If a bacterium divides once in every half an hour, it means it will double in half an hour. Hence a number of the bacterium after half an hour will be 1×2=2. After one hour the number of bacterium will be 2×2=4. Similarly, it one and a half hours it will be 4×2=8. In two hours it will be 8×2=16 in two and half hours, it will be 16×2=32. In three hours it will be 32×2=64. In three and half hours it will be 64×2=128. Hence, in 4 (four) hours the number of bacterium will be 128×2=256.
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