Mastering Biology (Chapter 3).

If a strand of DNA has the nitrogen base sequence 5′-ATTTGC-3′, what will be the sequence of the matching strand?
3′-TAAACG-5′
If a DNA double helix is 100 nucleotide pairs long and contains 25 adenine bases, how many guanine bases does it contain?
75
The two strands of a DNA double helix are held together by _____ that form between pairs of nitrogenous bases.
Hydrogen Bonds
A nucleotide is composed of a(n) _____.
Phosphate group, a nitrogen-containing base, and a five-carbon sugar
DNA is composed of building blocks called _____.
Nucleotides
DNA has the appearance of a _____.
Double Helix
Proteins are polymers of _____.
Amino acids
What type of bond joins the monomers in a protein’s primary structure?
Peptide
Which of these illustrates the secondary structure of a protein?
Which of these illustrates the secondary structure of a protein?
The secondary structure of a protein results from _____.
Hydrogen Bonds
Tertiary structure is NOT directly dependent on _____.
Peptide bonds
The reaction that joins two monomers to form a polymer is known as a _____ reaction. The molecule of water formed is due to the interaction between _____ and a hydrogen ion.
dehydration … a hydroxyl group
Which of these is NOT a lipid?
RNA
This figure is an example of a(n) _____.
This figure is an example of a(n) _____.
Saturated Fat
Which of these is a phospholipid?
Which of these is a phospholipid?
Which of these is rich in unsaturated fats?
Olive Oil
A function of cholesterol that does not harm health is its role _____.
As a component of animal cell membranes
Glycogen is _____.
A polysaccharide found in animals
Glucose + glucose —> _____ by _____.
maltose + water … dehydration synthesis
Which of these is a source of lactose?
Milk
Which of these is a polysaccharide?
Cellulose
_____ is the most abundant organic compound on Earth
Cellulose