dna rna and protein synthesis test

In RNA, _____ codon(s) translate to ______ amino acid(s) a)1, 1 b)3, 1 c) 3, 3 d)1, 20

a)1, 1

If a DNA molecule is found to be composed of 40% thymine, what percentage of guanine would be expected. a)10% b)20% c)40% d)80%

a)10%

Which site of the tRNA molecule binds to the mRNA molecule? a)anticodon b)codon c)amino acid d)5 prime end

a)anticodon

Amino acids are joined together into a protein chain by which of the following? a)transfer RNA b)DNA polymerase c)hydrogen bonds d)messenger RNA

a)transfer RNA

Which of the following must happen first in order for DNA replication to occur? a)DNA polymerase binds to the leading strand b)DNA is unwound c)Hydrogen bonds form between bases d)chromosomes condense

b)DNA is unwound

Which of the following best describes the arrangement of the sides of the DNA molecule? a)twisted b)antiparallel c)bonded d)alternating

b)antiparallel

In order to transform to a virulent form of bacteria, non encapsulated bacteria must: a)divide b)be exposed to killed capsulated bacteria c)be exposed to radioactive phosphorous d)infect a host

b)be exposed to killed capsulated bacteria

How many different codons are possible? a)3 b)20 c)64 d)an infinite number

c)64

The element that transformed the bacteria in Griffith's experiments was: a)protein b)capsules c)DNA d)heat

c)DNA

Translation begins: a) at the replication fork b)on the lagging strand c)at the start codon d)in the nucleus

c)at the start codon

The outside of the DNA ladder (the legs) is composed of alternating ___ and phosphates. a)adenines b)hydrogens c)sugars d)bases

c)sugars

The process by which RNA is made from DNA: a)synthesis b)translation c)transcription d)replication

c)transcription

RNA is synthesized on a DNA template in a process called ______, which utilizes the enzyme _______ a) translation, RNA polymerase b)transcription, DNA polymerase c)transcription, RNA polymerase d)replication, DNA polymerase

c)transcription, RNA polymerase

Once transcription has been completed, which of the following is NOT necessary for protein synthesis to occur? a)tRNA b)ribosomes c)mRNA d)DNA

d)DNA

The "rungs" of the DNA ladder are made of: a)phosphates and bases b)sugars c)sugars and phosphates d)bases

d)bases