During translation, the amino acid added to the growing polypeptide depends on the

codon on mRNA and anticodon on tRNA

the struggle for existence states

more offspring are produced than can survive

if two species have similar DNA sequnces but different observable characteristics

they are more closely relations than their appearances imply

Which of the following describes a frameshift mutation?

the insertion of adenine in a gene sequence

studbud

Biology Semester 2 Review

20 termsStudBud Administration73 plays

DNA and RNA, Genetics, Evolution, Classification, Ecology

Flashcards20 cardsFPractice quizPHost liveL

Questions 20

Answers

1
Different forms of a gene are called
phenotypes
alleles
traits
hybrids
2
Which animal kingdom contains only autotrophs
protista
plants
archaebacteria
eubacteria
3
Sex-linked genes are more likely to be found on
the smallest chromosome
Y chromosomes
autosomal chromosomes
X chromosomes
4
What enzyme creates new strands of DNA by adding complimentary nucleotides?
helicase
DNA polymerase
ligase
histones
5
which of the following is an abiotic factor
competition among organisms of the same species
nutrients in soil
parasitism
predator prey relationships
6
the population of seals plummeted due to over hunting. which process changed the gene pool?
gene flow
bottleneck effect
founder effect
natural selection
7
the pelvic bone in a whale would deb an example of
homologous structures
vestigial structures
analogous structures
embryonic structures
8
During translation, the amino acid added to the growing polypeptide depends on the
anticodon on mRNA and anticodon on tRNA
codon on mRNA and anticodon on rRNA
codon on mRNA and anticodon on tRNA
codon on rRNA and codon on mRNA
9
the struggle for existence states
organisms that are the fittest are always the largest
organisms most suited to their environment will survive
organisms not well suited to their environment will die
more offspring are produced than can survive
10
if two species have similar DNA sequnces but different observable characteristics
scientists need to re-examne DNA evidence
they could not have shared a common ancestor
they are more closely relations than their appearances imply
they are not closely related
11
Several different orders make up a
genus
family
species
class
12
Which of the following describes a frameshift mutation?
the inversion of gene sequences on a chromosome
the insertion of adenine in a gene sequence
the substitution of thyme for guanine in a gene sequence
the deletion of a chromosome
13
Why does DNA need to replicate?
So cells can divide
in order to create genetic diversity
so each cell has 2 copies of DNA
in order to make proteins
14
The process by which the genetic code of DNA is copied into a strand of RNA is called
translocation
transcription
translation
replication
15
most mutations
are deadly
are helpful to an organism
are harmful to an organism
have no effect on an organism
16
Variations in human skin color is an example of
incomplete dominance
codominance
polygenic trait
multiple alleles
17
Which type of RNA carries instructions for building proteins to other parts of the cell?
RNA polymerase
tRNA
rRNA
mRNA
18
The ability of an organism to survive and reproduced in its specific environment is
evolution
mutations
diversity
fitness
19
evolution is a change in
gene pool
phenotype
allele frequency
genotype
20
something that controls the growth or size of a population is
a limiting factor
a growth factor
the carrying capacity
the growth rate

Biology Semester 2 Review Flashcards | StudBud