What type of protein accelerates the thousands of different chemical reactions that

take place in an organism?
a. enzyme
b. amino acid\


c. transport protein
d. regulatory protein
e. protective protein


a

Biology & Microbiology

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In 2011, clinical medical trials using _____ to replace diseased cells in the eyes of blind patients showed some

success of restoring vision.

a. bone marrow cells b. central disk cells c. nervous tissue d. embryonic stem cells e. induced pluripotent stem cells

Biology & Microbiology

Which process involves the transfer of heat from the surface of a body to a fluid that passes over the body's surface?

a. convection b. evaporation c. radiation d. conduction

Biology & Microbiology

At ________ weeks, the fetal heartbeat can first be heard through a stethoscope.

A. 16 B. 4 C. 12 D. 30 E. 25

Biology & Microbiology

Most of the water absorbed by the plant enters through the

A. root cap. B. lenticels. C. root apical meristem. D. stomata. E. root hairs.

Biology & Microbiology