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Biology Final Review
Biology Final Review
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A review game before the Biology Final Exam!
Flashcards
40 cards
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Practice quiz
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Host live
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Questions
40
Answers
1
Which of the following statements regarding Down syndrome is
false
?
People with Down syndrome usually have a shorter life span.
Trisomy 21 is the cause of Down syndrome
Down syndrome is least likely when mothers are over 40
Down syndrome can usually be detected in utero
2
At what point in the development of a zygote does implantation in the uterine wall happen?
Blastula
Gastrula
2-cell stage
8-cell stage
3
Prolactin promotes milk production & newborn suckling promotes prolactin production. This is:
Negative feedback
Positive feedback
4
What is epigenetics?
Non-heritable changes in gene expression
Changes in gene expression not caused by changes in DNA
Changes in nucleotides that cause changes in gene expression
Inheritance patterns not explained by Mendelian genetics
5
Alternate forms of genes for a particular trait are called
phenotypes
alleles
genes
characters
6
What kind of molecule could this picture represent?
Uracil
Thymine
Cytosine
Adenine
7
Which of the following is false?
Homology is not useful in determining common ancestors.
Populations, not individuals, evolve.
Evolution is not goal directed.
Natural selection can only amplify/diminish heritable traits
8
The Hardy-Weinberg equation relies on several conditions being met. Which is NOT one of them?
No random mating.
Very large population.
No mutations.
No natural selection.
9
Which enzyme catalyzes the elongation of a new DNA strand?
helicase
RNA polymerase
DNA polymerase
DNA primase
10
Found in the interior of continents and marked by drought, fires, and herds of grazing animals
Savanna
Chaparral
Northern coniferous forests
Temperate grasslands
11
The thin sheet of tissue separating the outer and middle ear.
Pinna
Tympanum
Oval window
Stapes
12
When a female is born, in which stage of meiosis are her eggs?
Prophase II
Metaphase I
Prophase I
Metaphase II
13
Which is an example of a post-zygotic barrier that can prevent mating between species?
Gametic isolation
Reduced hybrid viability
Habitat isolation
Behavioral isolation
14
The driest of all terrestrial biomes is the
Savanna
Desert
Tropical forest
Chaparral
15
Each codon for an amino acid consists of how many nucleotides?
4
2
1
3
16
2 brown mice mate. 6 of the offspring are brown & 2 are white. What are the parents' genotypes?
bb and bb
Bb and Bb
Bb and bb
BB and bb
17
Independent orientation of chromosomes at metaphase I results in an increase in the number of
gametes
homologous chromosomes
possible combinations of characteristics
sex chromosomes
18
In a food web containing the following species, which is a primary consumer?
hawk
mouse
snake
grasshopper
19
These scientist(s) used bacteriophages to determine DNA was the genetic material.
Hershey and Chase
Hardie and Shea
Griffiths
Watson and Crick
20
What is genetic drift?
A change in the gene pool due to chance.
The movement of individuals between populations.
Similarity in characteristics resulting from common ancestry
The differential survival and reproduction of individuals.
21
The picture shows
a nucleotide
an amino acid
a lipid
a carbohydrate
22
What is allopatric speciation?
Geographic isolation leading to speciation.
Speciation taking place without geographic isolation.
23
The transfer of genetic information from DNA to RNA is called
initiation
translation
replication
transcription
24
What does this picture represent?
RNA
Amino acid
Monosaccharide
Nucleotide
25
If one strand of DNA is CGGTAC, the complementary strand would be
CATGGC
CGGTAC
GCCATG
GCCAUC
26
In which structure does spermatogenesis occur?
Seminiferous tubules
Urethra
Vas deferens
Epididymis
27
In "Origin of Species", Darwin presented a strong argument for
use and disuse.
perfect and unchanging species.
descent with modification.
evolution of individuals.
28
In humans, a child's sex is determined by the
father
both parents equally
mother
none of the above
29
The Doe family has 7 kids: 1 boy and 6 girls. What is the chance their 8th child will be a son?
1/4
1/8
1/256
1/2
30
Eukaryotic cells spend most of their cell cycle in which phase?
anaphase
telophase
interphase
metaphase
31
In therapeutic cloning, ESCs are grown in culture for medical treatments.
False
True
32
The number of proteins made from our DNA far exceeds the number of genes.
False
True
33
The open ocean is also called the
Aphotic Zone
Benthic Zone
Photic Zone
Pelagic Zone
34
The creation of genetically identical offspring by a single parent is called
asexual reproduction
sexual reproduction
regeneration
spontaneous generation
35
The production of multiple identical copies of a gene-carrying piece of DNA is:
gene cloning
gel electrophoresis
recombination
genetic manipulation
36
A person with AB blood illustrates the principle of
Codominance
Pleiotropy
Polygenic Inheritance
Incomplete dominance
37
If A & B are dominant to a & b, what is the expected phenotypic ratio of the cross AaBb x AaBb?
4:4:4:4
9:3:3:1
8:4:2:2
16:0:0:0
38
The DNA polymerase used in PCR is:
none of the above
an heat-resistant enzyme not found in humans
an enzyme used to cut things
an enzyme used in transcription
39
The artery leaving the left ventricle is the ____ and it delivers blood to the ____.
superior vena cava; lungs
aorta; body
inferior vena cava; body
pulmonary artery; lungs
40
The lac operon is ____ and the tryp operon is ____.
repressible; inducible
inducible; repressible
