Codon recognition is….

the anticodon of incoming tRNA molecule that pairs with mRNA

any change in the nucleotide sequence of DNA

Select all that a nucleotide is composed of

five-carbon sugar, phosphate group, nitrogenous base

the study of the molecular basis of genes and gene expression, ____genetics

James Watson and Francis Crick deduced the secondary structure of DNA using….

X-ray crystallography (from Franklin and Wilkins)

What is TRUE about ribosomes?

Ribosomes coordinate the functioning of mRNA and tRNA

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🧬 Bio - DNA REVIEW 🧬

25 termsStudBud Administration

Use this Quiz to review for DNA. Created for biology students! Basics of DNA and RNA with key ideas/details.

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Questions 25

Answers

1
Codon recognition is….
the completed polypeptide is freed from the last tRNA
the termination stage of translation when ribosome reaches stop codon
the new amino acid is joined to the chain
the anticodon of incoming tRNA molecule that pairs with mRNA
2
Find the amino acid for GAU
ASP
ARG
VAL
LYS
3
The protein shell that encloses a viral genome
viroid
prion
virus
capsid
4
A mutation is….
base substitution that produces an improved protein
large chromosomal regions or just a single nucleotide pair
any change in the nucleotide sequence of DNA
replacement of ne nucleotide with another
5
Find the codon(s) that go with the amino acid Cys.
UGC
CUG
GUU
UGU
6
Select all that a nucleotide is composed of
purines
five-carbon sugar
phosphate group
nitrogenous base
7
Phares were labeled with radioactive SULFUR to detect _______
RNA
DNA
codons
proteins
8
tRNA….
using anticodons to recognize the correct codons in the mRNA
converts the genetic messages of mRNA
picks up the appropriate amino acid
All of the above
9
Genetic code is a set of rules that dictates the correspondence between RNA codons in an mRNA molecule
True
False
10
Phares were labeled with radioactive PHOSPHORUS to detect _______
purines
proteins
RNA
DNA
11
DNA is a triple helix
True
False
12
What is a silent mutation?
replacing a codon
changes the amino acid coding
enhances the success of the organism
has no effect at all
13
Mutations can result in…
deletions
insertions
14
mRNA…..
All of the above
has a role in translation
conveys genetic messages from DNA
encodes amino acid sequences
15
Find the amino acid for AGU
ALA
ARG
SER
GLY
16
Frederick Griffith discovered that a “transforming factor” could be transferred into a bacterial cell
True
False
17
Molecular Biology
all of the above
the idea that all molecules have certain amounts of nucleotides
the study of the molecular basis of genes and gene expression, ____genetics
the study of all living things
18
What is a missense mutation?
changes the amino acid
harms the organism
has a benefit to the organism
changes the DNA and creates a disorder
19
______ is the synthesis of RNA under the direction of DNA
translation
transcription
RNA splicing
20
Select the nitrogen-containing bases
none of the above
O, U ,P ,K
A, C, T, G
A, U, C , G
21
Hydrogen acts (+) and nitrogen act (-)
True
False
22
James Watson and Francis Crick deduced the secondary structure of DNA using….
years of research which was noted in their journal
X-ray crystallography (from Franklin and Wilkins)
microscope
lab experiment
23
Translation occurs on the surface of the ribosome
False
True
24
What is TRUE about ribosomes?
ribosomal subunits come together during transcription
ribosomes are made up by DNA which creates mRNA
ribosomes are composed of DNA
Ribosomes coordinate the functioning of mRNA and tRNA
25
Mutations can not be caused by spontaneous errors
True
False

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