Organisms are composed of molecules, which are collections of smaller units, termed:

A. monomers.
B. atoms.
C. electrons.
D. polymers.
E. ions.


B. atoms.

Biology & Microbiology

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The inducing antigens that react with an antibody are called heterologous antigens

Indicate whether the statement is true or false.

Biology & Microbiology

Answer the question using the accompanying figure. What is occurring in step 2?

a. mitosis b. the first meiotic division c. the second meiotic division d. fertilization e. fusion

Biology & Microbiology

The first eukaryotic fossils are dated to about

a. 3.8 billion years ago. b. 2.1 billion years ago. c. 1.5 billion years ago. d. 750 million years ago. e. 201 million years ago

Biology & Microbiology

Genetics is defined as the study of ____

A. diseases B. DNA C. heredity D. chromosome structure E. more than one of these

Biology & Microbiology