Lesson 10: Nucleotides, Nucleic Acids And Heredity Flashcards Preview

Biochemistry Final Exam > Lesson 10: Nucleotides, Nucleic Acids And Heredity > Flashcards

Flashcards in Lesson 10: Nucleotides, Nucleic Acids And Heredity Deck (15):
1

A nucleotide is made up of a

Select one:
a. Base, polysaccharide and phosphate
b. Polysaccharide and phosphate
c. Base and monosaccharide
d. Base and phosphate
e. Base, monosaccharide and phosphate

e. Base, monosaccharide and phosphate

2

A sequence of DNA is copied or transcribed to which type of RNA?

Select one:
a. siRNA
b. rRNA
c. snRNA
d. tRNA
e. mRNA

e. mRNA

3

DNA mutations may be caused by

Select one:
a. Chemicals
b. Highly reactive oxidizing agents
c. All of these answers are correct
d. Ionizing radiation
e. Replication errors

c. All of these answers are correct

4

During DNA replication, the new cell contains one parent strand of DNA and one newly synthesised strand of DNA. True or False?

True

5

Genes are found in the cytoplasm of cells. True or False?

False

6

Only the exons of the DNA are transcribed onto the mRNA. True or False?

False

7

Satellites occur at the ends and center of chromosomes and appear to provide structural stability. True or False?

True

8

Segments of DNA that don’t seem to code for anything are

Select one:
a. Satellites
b. Codons
c. Introns and satellites
d. Introns
e. Exons

c. Introns and satellites

9

The complementary base pair of cytosine is always

Select one:
a. Adenine
b. Guanine
c. Thymine
d. Uracil
e. Cytosine

b. Guanine

10

The secondary structure of DNA is the

Select one:
a. Combined DNA and histone complex
b. Sequence of nucleotides
c. Chromatin form
d. All of these answers are correct
e. Double helix formation

e. Double helix formation

11

There is continuous synthesis of the leading strand during DNA replication. True or False?

True

12

Which enzyme adds nucleotides to the 3’ end of a new strand of DNA that is being synthesized?

Select one:
a. DNA glycosylase
b. DNA polymerase
c. RNA polymerase
d. Ribozyme
e. DNA ligase

b. DNA polymerase

13

Which of the following is NOT an RNA base?

Select one:
a. Uracil
b. Guanine
c. Cytosine
d. Adenine
e. Thymine

e. Thymine

14

Which of the following is thought to be influenced by genetics?

Select one:
a. Susceptibility to certain diseases
b. All of these answers are correct
c. Physical characteristics
d. Intelligence
e. Areas of talent

b. All of these answers are correct

15

Which type of RNA transports amino acids to the site of protein synthesis in ribosomes?

Select one:
a. rRNA
b. siRNA
c. tRNA
d. mRNA
e. snRNA

c. tRNA