Understanding Biology

Kenneth A. Mason, Tod Duncan, George B. Johnson

Chapter 3 The Chemical Building Blocks of Life - all with Video Answers

Educators

Section 1

Carbon Provides the Framework of Biological Molecules

01:38

Problem 1

The four kinds of organic molecules are
a. hydroxyls, carboxyls, aminos, and phosphates.
b. proteins, carbohydrates, lipids, and nucleic acids.
c. DNA, RNA, sugars, and amino acids.
d. carbon, hydrogen, oxygen, and nitrogen.

Joanna Quigley

Numerade Educator

01:16

Problem 2

Which of the following is a hydroxyl group?
a. $-\mathrm{OH}$
b. $\mathrm{CH}_{3}$
c. $-\mathrm{C}=\mathrm{O}$
d. $-\mathrm{NH}_{2}$

Joanna Quigley

Numerade Educator