Saliva contains the hydrolytic enzyme, salivary amylase, which initiates the breakdown of the polysaccharide _________ into the disaccharide, maltose.  

A.  sucrose
B.  starch
C.  glucose
D.  fructose
E.  cellulose


B.  starch

Biology & Microbiology

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The __________ circuit carries blood from the heart to body tissues, and then returns it to the heart. Fill in the blank(s) with the appropriate word(s)

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During swallowing food, which structure moves downward to prevent food from entering the trachea?

a. larynx b. pharynx c. glottis d. epiglottis e. bronchus

Biology & Microbiology

Which is the correct sequence of embryonic development in eudicots?

a. globular stage embryo ? suspensor embryo ? proembryo ? heart stage embryo b. heart stage embryo ? globular stage embryo ? proembryo ? torpedo stage embryo c. torpedo stage embryo ? globular stage embryo ? heart stage embryo ? suspensor d. proembryo ? torpedo stage embryo ? heart stage embryo ? globular stage embryo e. proembryo ? globular stage embryo ? heart stage embryo ? torpedo stage embry

Biology & Microbiology

Energy is released as ATP becomes ADP when ATP:

A) ejects adenine. B) ejects ribose. C) accepts a phosphate group. D) accepts two phosphate groups. E) ejects one of its phosphate groups.

Biology & Microbiology