Fill in the blank — In DNA, the base adenine pairs with the base ______.

Question:
Fill in the blank — When a cell is preparing to divide, it makes an exact copy of all its nuclear DNA. Each chromosome then consists of two parallel filaments called ______ chromatids.

Fill in the blank — When a cell is preparing to divide, it makes an exact copy of all its nuclear DNA. Each chromosome then consists of two parallel filaments called ______ chromatids.

Question:
What are the monomeric subunits that comprise a molecule of DNA called?

Multiple Choices:
A. Amino acids
B. Fatty acids
C. Monosaccharides
D. Nucleotides

About how much DNA is contained in one nucleus during the first half of a cell’s life cycle?

Multiple Choices:
A. 50 feet
B. 2 feet
C. 6 feet
D. 24 feet

Match each nitrogenous base with its description.

Bases:

• Cytosine

• Adenine

• Thymine

• Guanine

Descriptions:

• Pyrimidine that binds with guanine

• Pyrimidine that binds with adenine

• Purine that binds with thymine

• Purine that binds with cytosine

In the nucleus, DNA is complexed with proteins to form a fine filamentous material called

Select all that apply — Which of the following are components of nucleotides?

Multiple Choices:
A. Amino acids
B. Proteins
C. Sugars (ribose or deoxyribose)
D. Nitrogenous bases
E. Phosphate groups

Question:
In a molecule of DNA, which two nitrogenous bases form two hydrogen bonds with each other? (Select two.)

Multiple Choices:
A. Adenine
B. Thymine
C. Uracil
D. Guanine
E. Cytosine

Which of the following uses cytology and microscopy to study chromosomes and their relationship to hereditary traits?

Multiple Choices:
A. Genetic medicine
B. Cytogenetics
C. Molecular genetics