Biology activity: Mechanism of protection, support and movement

Biology activity, aimed at second-year high school students, with questions developed about the protection mechanism.

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SCHOOL: DATE:

PROF: CLASS:

NAME:

Protection, support and movement mechanisms

1) Check the correct statement
a) The shells of arthropods have only a support function
b) The absence of a skeleton facilitates movement
c) The limestone plates of the echinoderms constitute an exoskeleton
d) Chitin, which coats arthropods, is impermeable to water
e) Aquatic invertebrates must have a water-impermeable coating epithelium

2) Check the wrong statement
a) The smooth muscle tissue is of slow contraction and, in general, involuntary

b) The contractile proteins of myofibrils are actin and myosin
c) During muscle contraction, the actomyosin complex forms ATP
d) In muscle fibers, phosphorus phosphocreatine for ATP regeneration
e) Muscle contraction occurs as a result of the shortening of actin and myosin filaments

3) About the contraction of striated muscle fibers, it is correct to state that:
a) Actin filaments change their length, shortening
b) Actin filaments do not change their length, maintaining uniform size
c) Myosin filaments change their length, shortening
d) Myosin filaments do not change their length, maintaining uniform size
e) Actin filaments glide between myosin filaments

4) What is meant by keratinization?
A.

5) How do animals move?
A.

Per Camila Farias.

At answers are in the header link.

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