quiz 3

Question 1

the building units of proteins are..

A) phospholipids
B) nucleotides
C) amino acids
D) carbohydrates

Answer 1

C) amino acids

Question 2

each DNA chain is a ___ mirror image to the other chain

A) alternative
B) Original
C) Circular
D) Complementary

Answer 2

D) complementary

Question 3

In DNA molecules two DNA strands are connected by

A) Hydrogen bonds
B) Covalent bonds
C) Ionic Bonds
D) Peptide Bonds

Answer 3

A) Hydrogen bonds

Question 4

Name the process of obtaining a copy of the information in a gene

A) Transcription
B) Phosphorylation
C) Translation
D) Polymerization

Answer 4

A) transcription

Question 5

Each amino acid in a protein is specified by __ of RNA nucleotides

A) 6
B) 2
C) 3
D) 1

Answer 5

C) 3

Question 6

the name of the enzyme the is responsible for assembling a new DNA strand during replication is

A) Helicase
B) DNA polymerase
C) Dehydrogenase
D) ATP synthase
E) Ligase

Answer 6

B) DNA polymerase

Question 7

to make sure that the right amino acid is attached to the growing polypeptide chain on the ribosome, tRNA (transfer RNA) has an attached three nucleotide sequence called

A) Anticodon
B) Enhancer
C) Codon
D) Repressor

Answer 7

A) Anticodon

Question 8

the DNA site that RNA polymerase recognizes as the beginning of the gene and attaches to in order to start the formation of mRNA is called

A) Exon
B) Anticodon
C) Intron
D) Promoter

Answer 8

D) promoter

Question 9

name three types of enzymes involved in DNA replication

Answer 9

1. helicase
2. DNA polymerase
3. DNA ligase

Question 10

which of the following is NOT one of the bases in a DNA molecule

A) ADENINE
B) GUANINE
C) CYTOSINE
D) URACIL
E) THYMINE

Answer 10

D) URACIL

Question 11

where in the cell are all the three types of RNA made

Answer 11

nucleus

Question 12

the enzyme responsible for assembling a new RNA strand in transcription is

A) DNA POLYMERASE
B) LIPASE
C) LIGASE
D) RNA POLYMERASE
E) ATP SYNTHASE

Answer 12

D) RNA POLYMERASE

Question 13

WHAT MOLECULE DO tRNAS CARRY FOR PROTEIN ASSEMBLY

A) Nucleotide
B) Monosaccharide
C) Amino Acids
D) Carboxylic acids

Answer 13

C) Amino Acids

Question 14

a function ribosome is built of
A) Small and large subunits
B) two amino acids
C) tRNA and mRNA
D) DNA and protein molecules

Answer 14

A) small and large subunits

Question 15

a codon in mRNA is ACU. Build a complementary tRNA anticodon

Answer 15

UGA

Question 16

substances that induce mutations are called
A) Mutagens
B) Carcinogens
C) Splysogens
D) Glycogens

Answer 16

A) mutagens

Question 17

what DNA sequences are interrupting genes in eukaryotes
A) Introns
B) Promoters
C) Enhancers
D) Inhibitors

Answer 17

A) introns

Question 18

Darwin defined evolution as
A) Inheritance of acquired characteristics
B) Descent with modification by natural selection
C) creation of equal organisms
D) none of the above

Answer 18

B) descent with modification by natural selection

Question 19

in one sentence explain why chimanzees still exist on earth together with human

Answer 19

EVOLUTION ISN’T LINEAR! WE ONLY HAVE COMMON ANCESTOR

Question 20

alternative alles of a gene are located on 
A) the chromosome 21
B) a ribosome
C) different polypeptides
D) Homologous chromosomes

Answer 20

C) homologous chromosomes

Question 21

comparative anatonomy presents the evidence of evolution. It defines homolgous structures as
A) stuctures that evolved in the same species over million years
B) structures with different anatomy, but similar function
C) structures with different anatomy, but different function

Answer 21

C) structures with different anatomy, but different function

Question 22

both the mother and the father of a colorblind make appear to be normal. from whom did the son inherit the allele for colorblindness
A) mother
B) father

Answer 22

A. MOTHER