Answer:
Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). When an antigen binds to the B-cell surface, it stimulates the B cell to divide and mature into a group of identical cells called a clone.
Explanation:
Answer:
Growth of actin filaments to form bulges in the plasma membrane.
Explanation:
Actin filaments is a vital element in the body of unicellular organisms such as amoeba which is responsible for the movement of unicellular organism from one place to another. It also helps in the division of the cell and increase its population. This actin filament also helps the amoeba by engulf food substance for growth and survival.
D) <span>a large assortment of plant dispersal mechanisms.
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<span>Pulmonary circulation is the movement of blood starting from
the heart, where deoxygenated, or carbon dioxide-filled, blood leaves from the
right ventricle and through the pulmonary valve, then into the left and right
pulmonary arteries and arrives at the lungs. During the process of respiration,
the carbon dioxide is released and oxygen is added to the blood. Then, the
pulmonary veins carry the oxygenated blood back to the heart, entering into the
left atrium, completing the circulation. The correct answer is B, pulmonary.</span>
Answer:
diffusion doesnt require energy in any situation
Explanation:
diffusion always occurs down concentration gradient as it is a form of passive transport. usually energy is only used when movig against concentration gradient. give me a brainliest if i helped! ♡
