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Bio Study Guide Fenwick Flashcards | StudBud
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Bio Study Guide Fenwick
Bio Study Guide Fenwick
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1
RNA contains the sugar
Ribose
lactose
Deoxyribose
glucose
2
The Watson and Crick model of DNA is a
Single Helix
Double Helix
Half strand
3
How many codons are needed to specify six amino acids
3
9
6
12
4
Why does DNA double helix have a uniform diameter
deoxyribose sugars bind with ribose sugars
nucleotides bind with nucleotides
Purines pari with pyrimidines
C nucleotides pair with A nucleotides
5
Two plants are crossed, resulting in offspring with 3:1 phenotypic ratio for a particular trait. This suggests
incomplete dominance
That parents had contrasting traits
that the parents were both heterozygous
codominance
6
Chargaffs analysis of the relative base composition of DNA was significant because he was able to show that
the amount of A is always equivalent to T, and C to G
The amount of ribose is always equivalent to deoxyribose
The human genome is more complex than that of other species
The relative proportion of each of the four bases differs within species
7
Traditional classifications tended to take into account primarily
RNA similarities
DNA similarities
General similarities in appearance
extinct organsims
8
Which types of RNA are involved in protein synthesis
mRNA, tRNA, and rRNA
tRNA only
rRNA and tRNA only
mRNA only
9
Which type of RNA functions as a blueprint of the genetic code
RNA polymerase
mRNa
tRna
rRna
10
In eukaryotes DNA
is circular
is located in the ribosomes
is located in the nucleus
floats freely in the cytoplasm
11
What is the function of topoisomerase
elongation of new DNA at a replication fork
relieving strain in the DNA knot ahead of the replication
unwinding of the double helix
addition of methyl groups to bases of DNA
12
Eubacteria and Archaebacteria were once
Fungi
Monera
Eukarya
Animalia
13
Which would you expect of a eukaryotic cell lacking telomerase
inability to repair thymine
production of extra DNA
a reduction in chromosome length
High sensitivity to sunlight
14
Which of the following separates the DNA strands during replication
Telomerase
RNA polymerase
DNA polymerase
Helices
15
DNA is copied during a process called
Replication
transcription
transformation
Translation
16
Replication in prokaryotes differs from replication in eukaryotes for which of these reasons
prokaryotes have telomeres and eukaryotes don't
the prokaryotic chromosome has histones whereas eukaryotes chromosomes dont
prokaryotes produce mutations during DNA replication but eukaryotes don't
prokaryotic chromosomes have a single origin replication
17
What codons specify the amino acid tryptophan
GTT
GAT
AGT
GGT
18
Why is it possible for an amino acid to be specified by more than one kind of codon
Some codons have the same sequence of nucleotides
There are 64 different kinds of codons but only 20 amino acids
some codons don't specify an amino acid
The codon AUG codes for the amino acid methionine
19
During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
GATCCA
AGCTTG
TCGAAC
GAUCCA
20
How many main types of RNA are there
thousands
1
hundreds
3
21
All organisms in the kingdoms Protista Plant Fungi Animal are
photosynthetic organisms
eukaryotes
prokaryotes
Multicellular organisms
22
Which kingdom contains heterotrophs with cell walls of chitin
protista
fungi
anima
plant
23
Members of which kingdom have cell walls and are heterotrophic
Animal
Fungi
Plant
Protist
24
The domain that contains unicellular organisms that live in extreme environments is
Eubacteria
Bacteria
Archaea
Eukarya
