Answer:
gravity,friction and motion
The portion of a sperm cell that contains digestive enzymes for penetrating he egg is called the acrosome.
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Answer:
Explanation:
Cannibalism is a very essential factor regulating population dynamics of four beetle. After some days of feeding, the flour becomes conditioned by the beetles which can affect rate of cannibalism
Adults have a relatively lower rate of cannibalism. While its highest rate of cannibalism is at larvae stage
Flour conditioning is caused by the accumulation of feces, pheromones and ethylquinone- thus is repellent produced by the beetles.
Explanation:
<em>Immunological memory</em> is the property of the immune system to store information about a stimulus so it can mount an effective response if it encounters the same stimulus again being this second response quicker and stronger even after years since the first encounter.
This kind of response is dependent on many subpopulations within T and B lymphocytes and NK cells. When encountering an antigen, B cells recognize it by membrane antibody specifically binding to the antigen and then being activated to expand rapidly with their progeny clones differentiating into plasma and memory B cells, these last ones have a long life span to remain in the body, ready when another encounter with the same stimulus occurs, this is how the basis for effective immunizations happens.
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Answer: false
Explanation:
Solute is the substance that dissolves
Solvents is the substance that dilutes dissolve in to make a solution eg ocean water is a solution of salt and water
Water being the solvent and salt being the solute
