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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
Inversion
D
Deletion
2) When a mutation results in an allele that is recessive-
A
An individual who is homozygous for the trait will not express the mutation
B
An individual who is heterozygous for the trait will express the mutation
C
The mutation will never be expressed
D
The mutation will be expressed only in individuals who are homozygous for the recessive trait
3) Which action is an application of the work of Watson and Crick?
A
arthroscopic surgery
B
magnetic resonance imaging
C
blood typing
D
DNA fingerprinting
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
harmful mutation
B
beneficial mutation
C
structural mutation
D
neutral mutation
5) A mutation is considered helpful when-
A
it increases the chances of survival
B
it provides no harm to the organism
C
it changes the genetic makeup of the organism
D
It decreases the chances of survival
6) A cell nucleus sends out molecules that carry instructions to protein synthesis. What is the destination of these molecules?
A
enzymes
B
ribosomes
C
cytoskeleton
D
cell membrane
7) In which set is a biotic factor paired with an abiotic factor?
A
decomposers and plants
B
temperature and humidity
C
producers and sunlight
D
herbivores and carnivores
8) Which idea about evolution was held by Darwin but NOT by Lamarck?
A
Organisms best suited to their environment survive and reproduce
B
Species are moving toward perfection
C
Species are fixed and do no change
D
The use or disuse of an organ determines its appearance in a species
9) Which illustrates Lamarck's explantation of evolution?
A
A female peacock has brightly colored feathers, therefore attracting a mate more easily
B
A species of fish develop fins that allow it to swim faster after a bigger, predatory fish is introduced into its environment
C
A population of humans develops a darker skin tone after moving to a sunnier and warmer environment
D
A blacksmith, when working, strengthens muscles in his arms, and so, his sons will have similar muscular dev.when they mature
10) What questions did both Lamarck and Darwin try to answer with their theories of evolution?
A
What is the role of DNA in the inheritance of traits?
B
What causes populations of organisms to change over time?
C
What are the patterns of heredity in sexually reproducing organisms?
D
What happens to beneficial traits when populations undergo natural selection?
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 allele frequencies in random generations
B
changes in chromosomal frequencies in successive generations
C
changes in chromosomal 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
formation of cancer cells
B
inability to undergo sexual reproduction
C
stopping the production of an essential protein
D
resistance to a virus
14) How is information from the field of embryology used as evidence for evolution?
A
It shows that organisms from different species have similar DNA
B
It shows that organisms from different species have similar developmental patterns
C
It shows that organisms from the same 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 be seen in one organism in one lifetime
B
All of the above
C
Evolution can occur in one generation over many years
D
Evolution can only occur through thousands or million of generations in a population
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
Whether the populations interbreed
C
The nutritional content of the seeds grew smaller birds
D
The finches using their beak more, the beak changing, then passing the trait on
18) Which describes a change of alleles in a population over time?
A
independent assortment
B
incomplete dominance
C
biological evolution
D
relative frequency
19) Which is part of the process of radioactive dating for determining the age of fossils?
A
studying stratified bands of rocks
B
using the carbon 14 isotope
C
observing the biozones of different species
D
studying the different types of inclusions found in rock formations
20) Relative dating of fossils is different from radioactive dating of fossils because relative dating
A
can provide a rough estimation of the age of a fossil
B
requires the use of modern technology
C
requires observing the location in which the fossil was found
D
measures changes in fossils according to decaying isotopes
*select an answer for all questions
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