• Home
  • Textbooks
  • Biology Concepts and Applications
  • Molecules of Life

Biology Concepts and Applications

Cecie Starr

Chapter 3

Molecules of Life - all with Video Answers

Educators

Chapter Questions

01:34

Problem 1

Name the molecules of life and the families of small organic compounds from which they are built.

Christina Sorrentino
Christina Sorrentino
Numerade Educator
02:07

Problem 2

Each carbon atom can share pairs of electrons with as _________ many as other atoms.
a. one
b. two
c. three
d. four

Kaley Lawrie
Kaley Lawrie
Numerade Educator
01:31

Problem 3

Sugars are a class of _____ which have one or more ______ groups.
a. proteins; amino
c. alcohols; hydroxyl
b. acids; phosphate
d. carbohydrates; carboxyl

Christina Sorrentino
Christina Sorrentino
Numerade Educator
02:31

Problem 4

_____________ is a simple sugar (a monosaccharide)
a. Glucose
c. Ribose
e. both a and b
b. Sucrose
d. Chitin
f. both a and $c$

Eric Goldman
Eric Goldman
Numerade Educator
03:15

Problem 5

5. The fatty acid tails of unsaturated fats incorporate one or more ___________.
a. single covalent bonds b. double covalent bonds

Kaley Lawrie
Kaley Lawrie
Numerade Educator
01:11

Problem 6

Sterols are among the many lipids with no ___________.
a. saturation
c. phosphates
b. fatty acids
d. carbons

Kaley Lawrie
Kaley Lawrie
Numerade Educator
01:39

Problem 7

Which of the following is a class of molecules that encompasses all of the other molecules listed?
a. triglycerides
c. waxes
e. lipids
b. fatty acids
d. sterols
f. phospholipids

Christina Sorrentino
Christina Sorrentino
Numerade Educator
00:39

Problem 8

________ are to proteins as __________ are to nucleic acids.
a. Sugars; lipids
c. Amino acids; hydrogen bonds
b. Sugars; proteins
d. Amino acids; nucleotides

Aditya Sood
Aditya Sood
Numerade Educator
00:48

Problem 9

A denatured protein has lost its ___________.
a. hydrogen bonds c. function
b. shape
d. all of the above

Aditya Sood
Aditya Sood
Numerade Educator
01:37

Problem 10

Nucleotides occur in ____________.
a. ATP
b. DNA
c. RNA
d. all are correct

Christina Sorrentino
Christina Sorrentino
Numerade Educator
01:18

Problem 11

Which of the following nucleotides is not found in DNA?
a. adenine $\quad$ b. uracil
c. thymine d.guanine

Christina Sorrentino
Christina Sorrentino
Numerade Educator
03:03

Problem 12

Match the molecule with the most suitable description.
_____long sequence of amino acids _____a rechargeable battery in cells _____glycerol, fatty acids, phosphate _____two strands of nucleotides _____one or more sugar monomers
a. carbohydrate
b. phospholipid
c. polypeptide
d. DNA
e. ATP

Christina Sorrentino
Christina Sorrentino
Numerade Educator