Glycogen is to animal cells as ________ is to plant cells.

A. lipid
B. cellulose
C. starch
D. protein
E. sugar


C. starch

Biology & Microbiology

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What is an example of an extrinsic control of cycles in population size?

a. the relationship between a species and its predators b. hormonal changes c. dispersal d. population density e. a single reproductive event

Biology & Microbiology

Hydrogen bonds formed within the backbone of a protein contribute to the ___________ structure of insulin

a. primary and secondary b. secondary and tertiary c. tertiary and quaternary d. secondary, tertiary, and quaternary

Biology & Microbiology

Immune cells that secrete cytokines and activate other immune cells are:

a. Virally infected cells b. Helper T-cells c. Invading pathogenic bacteria d. Cytotoxic T-cells e. Abnormal body cells

Biology & Microbiology

When some hybrid organisms do not live long, it is an example of

A) temporal isolation. B) hybrid inviability. C) hybrid infertility. D) hybrid vigor. E) gametic incompatibility.

Biology & Microbiology