Mutagens that can cross the placenta of a pregnant woman and cause a spontaneous abortion or birth defects in the fetus.


Answer: Teratogens

Biology & Microbiology

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In the accompanying figure, the structure labeled “B” is a ____

a. muscle fiber b. sarcoplasmic reticulum c. mitochondria

d. myofibril e. Z line

Biology & Microbiology

Which of the following prevents muscle contraction by regulating the interaction between the

myofilaments? a. the troponin-tropomyosin complex b. actin c. actomyosin d. phosphate e. myosin

Biology & Microbiology

Synaptonemal complex forms during

A) leptonema. B) zygonema. C) pachynema. D) diplonema. E) diakinesis.

Biology & Microbiology

A(n) ________ involves drug testing on humans

Fill in the blank(s) with correct word

Biology & Microbiology