<span>The f2 generation phenotypes resulting from the mono hybrid cross of pure reds display a ratio of 9:3:3:1</span>
Answer: Option II.
B cells and T cells undergo colonial selection after encountering an antigen.
Explanation:
B cells are a type of lymphocytes or white blood cells that produce hormones so as to activate the immune system in other to provide a defence or fight against pathogens.
T cells are lymphocytes immune cells that fight against pathogens in the body.
Both T cells and B cells undergo colonial selection after encountering an antigen. The major difference between them is that T cells
Answer:
A) potential energy called chemical energy.
Answer:
d. the movement of myosin head while attached to actin myofilament
Explanation:
During muscle contraction, the calcium ions released from the sarcoplasmic reticulum in the sarcoplasm bind to troponin which in turn removes tropomyosin from the myosin-binding sites present on the actin. Hydrolysis of ATP at the myosin heads energize them. These myosin heads with stored energy bind to the myosin-binding sites on the actin filaments. In their bound conditions on the actin filaments, myosin heads are called cross bridges. Only one myosin head of a single myosin molecule forms cross-bridge at a time.
Answer: False
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Reason :The Chaparral biomes could have various sorts of terrains. The area in a chaparral biomes can range from </span><span>mountainous, rocky, or flat. Their temperature and climate define chaparral biomes. They are scorching and dry and have mild winters and intense summers.
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