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BioSemExam Part 4
Test Description: Test 4
Instructions: Answer all questions to get your test result.
1) What type of mutation is it when a nitrogen base is added?
A
Insertion
B
Frameshift
C
Deletion
D
Inversion
2) When a mutation results in an allele that is recessive-
A
The mutation will never be expressed
B
The mutation will be expressed only in individuals who are homozygous for the recessive trait
C
An individual who is homozygous for the trait will not express the mutation
D
An individual who is heterozygous for the trait will express the mutation
3) Which action is an application of the work of Watson and Crick?
A
blood typing
B
arthroscopic surgery
C
DNA fingerprinting
D
magnetic resonance imaging
4) What type of mutation occurs when a nucleotide base is replaced with a chemically similar nucleotide base and, therefore, there are no recognizable effects upon the organism?
A
beneficial mutation
B
neutral mutation
C
harmful mutation
D
structural mutation
5) A mutation is considered helpful when-
A
It decreases the chances of survival
B
it increases the chances of survival
C
it changes the genetic makeup of the organism
D
it provides no harm to the organism
6) A cell nucleus sends out molecules that carry instructions to protein synthesis. What is the destination of these molecules?
A
ribosomes
B
enzymes
C
cell membrane
D
cytoskeleton
7) In which set is a biotic factor paired with an abiotic factor?
A
decomposers and plants
B
producers and sunlight
C
herbivores and carnivores
D
temperature and humidity
8) Which idea about evolution was held by Darwin but NOT by Lamarck?
A
Species are moving toward perfection
B
The use or disuse of an organ determines its appearance in a species
C
Organisms best suited to their environment survive and reproduce
D
Species are fixed and do no change
9) Which illustrates Lamarck's explantation of evolution?
A
A species of fish develop fins that allow it to swim faster after a bigger, predatory fish is introduced into its environment
B
A population of humans develops a darker skin tone after moving to a sunnier and warmer environment
C
A blacksmith, when working, strengthens muscles in his arms, and so, his sons will have similar muscular dev.when they mature
D
A female peacock has brightly colored feathers, therefore attracting a mate more easily
10) What questions did both Lamarck and Darwin try to answer with their theories of evolution?
A
What causes populations of organisms to change over time?
B
What are the patterns of heredity in sexually reproducing organisms?
C
What happens to beneficial traits when populations undergo natural selection?
D
What is the role of DNA in the inheritance of traits?
11) An example of genetic variation in an organism is -
A
Fruit without seeds
B
All of the above
C
Presence of dimples
D
Albinism
12) Which must be in place within a population in order for the theory of evolution to hold true?
A
changes in chromosomal frequencies in random generations
B
changes in chromosomal frequencies in successive generations
C
changes in allele frequencies in random generations
D
changes in allele frequencies in successive generations
13) According to natural selection, which of the following results would be considered a beneficial mutation to an organism?
A
resistance to a virus
B
stopping the production of an essential protein
C
inability to undergo sexual reproduction
D
formation of cancer cells
14) How is information from the field of embryology used as evidence for evolution?
A
It shows that organisms from the same species have similar DNA
B
It shows that organisms from different species have similar developmental patterns
C
It shows that organisms from different species have similar DNA
D
It shows that organisms from the same species have similar developmental patterns
15) The process by which individuals in a population that are best adapted to the environment pass their traits to their offspring is-
A
Variation
B
Overproduction
C
Speciation
D
Natural selection
16) Which of the following statements is true?
A
Evolution can occur in one generation over many years
B
Evolution can only occur through thousands or million of generations in a population
C
All of the above
D
Evolution can be seen in one organism in one lifetime
17) The evolution of beak sizes in Galapagos finches is a response to
A
How finches use their beaks for the food or seeds available
B
The finches using their beak more, the beak changing, then passing the trait on
C
Whether the populations interbreed
D
The nutritional content of the seeds grew smaller birds
18) Which describes a change of alleles in a population over time?
A
independent assortment
B
relative frequency
C
incomplete dominance
D
biological evolution
19) Which is part of the process of radioactive dating for determining the age of fossils?
A
studying stratified bands of rocks
B
studying the different types of inclusions found in rock formations
C
using the carbon 14 isotope
D
observing the biozones of different species
20) Relative dating of fossils is different from radioactive dating of fossils because relative dating
A
measures changes in fossils according to decaying isotopes
B
can provide a rough estimation of the age of a fossil
C
requires the use of modern technology
D
requires observing the location in which the fossil was found
*select an answer for all questions
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