Answer:
protein
Explanation:
see attached for human skill
Answer:
d. ATP is present and the intracellular Ca2+Ca2+ concentration is high.
Explanation:
Myosins are motor proteins that plays a major role in muscle contraction. They depend on ATP and responsible for motility in actin-based substances. Skeletal muscle is composed of myosin and actin fibers. Each myosin thick filament is surrounded by actin thin filaments, and each thin filament is surrounded by thick filaments. There exists a strong attraction between the myosin head and the myosin-binding site of actin which binds them spontaneously. This bond is aided by the presence of ATP and the high concentration of intracellular Ca2+. The myosin protein undergoes a change in its shape.
Answer: The amoeba is another animal-like protist that must move about to find food. The amoeba uses phagocytosis to feed on organisms.
Valves are the thin flat tissues in the heart that acts like a one way door. The valves serve the role of preventing the back flow of blood. The heart has four major valves; that is the tricuspid valve located between the right atrium and the right ventricle, Pulmonary valve at the right ventricle and the pulmonary artery, bicuspid valve located between the left atrium and the left ventricle, and the aortic valve at the base of the aorta.
Answer:
The difference between mitosis and meiosis is that....
<u>Mitosis produces two daughter cells with the same number of chromosomes as the parent cell. </u>
<u>Meiosis results in four daughter cells harboring only half of their parent's chromosomes, which underwent recombination.</u>
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