A plant embryo enclosed in a protective covering is a(n) 

A. pollen.
B. egg.
C. seed.
D. spore.


C. seed.

Biology & Microbiology

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Which vesicular transport process occurs primarily in some white blood cells and macrophages?

a. exocytosis b. phagocytosis c. pinocytosis d. endocytosis

Biology & Microbiology

Which of the following statements is

CORRECT about enzymes?

a. Most enzymes are proteins. b. Enzymes speed up reactions that are intended to happen anyway. c. Enzymes do not change the output of a reaction. d. Enzymes can perform over and over. e. All of these are correct

Biology & Microbiology

Enzymes speed up reactions by

a. lowering activation energy. b. adding some energy to the system. c. increasing activation energy. d. lowering activation energy and adding some energy to the system. e. doing all of these

Biology & Microbiology

Define apoptosis and explain its role in normal development. What will be an ideal response?

Biology & Microbiology