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Life Science
Test Description: MST2
Instructions: Answer all questions to get your test result.
1) Which part of Darwin's theory of evolution may be used to describe the results of when lions prey on antelope?
A
natural selection
B
adaptation to environment
C
surival of the fittest
D
variation in species
2) Which scenario represents the role of a vector in the transmission of a disease?
A
A person handles contaminated tissues and later gets a cold.
B
A mother passes a mutated gene to her offspring.
C
An infected raccoon bites an uninfected dog who contracts rabies.
D
A healthy mother passes protective antibodies to her unborn child.
3) What relationship exists between genes and chromosomes?
A
Genes are made up of chromosomes which move from the nucleus to the cytoplasm.
B
Genes produce chromosomes which transmit traits from one generation to another.
C
Genes and chromosomes produce alleles which determine the phenotype of offspring.
D
Genes are located on chromosomes which are found in the nucleus of cells.
4) Which statement about DNA is true?
A
DNA controls the genotype only in the second and third generations.
B
Different people can have the same copy of DNA in their cells.
C
DNA controls the genotype but not the phenotype of an organism.
D
DNA is made up of genes that carry hereditary information.
5) Which statement describes an adaptation for a desert environment?
A
Small mammals are nocturnal to escape the sun's most intense heat.
B
Mammals have thick layers of fat for insulation and light-colored fur for camouflage.
C
Trees lose their leaves to conserve energy and prevent damage to the tree.
D
Plants have air spaces in roots and specialized stems for buoyancy.
6) Which statement about cells is correct?
A
Cells of all living things are identical.
B
All cells have a nucleus and cytoplasm.
C
All cells come from other cells.
D
Cells are made up of other cells.
7) Which cell function would be affected if a cell's vacuoles were destroyed?
A
diffusion
B
direction of cellular activities
C
respiration
D
storage of wastes and small molecules
8) What relationship exists between a virus and a cell?
A
A cell needs a virus to obtain energy.
B
A virus needs a host cell to function.
C
A virus is bigger than a cell.
D
A cell cannot exist without a virus.
9) Which statement describes the niche of an organism in an ecosystem?
A
A frog spends part of its life in water and part on land.
B
A pelican is able to fly long distances without stopping.
C
A moth is nocturnal and is attracted to light.
D
A snake feeds on small rodents in a forest.
10) Which statement about energy is true?
A
Energy transfer between trophic levels is efficient.
B
Once an energy source is gone it cannot be renewed.
C
Energy can always be recycled.
D
Energy only flows in one direction through an ecosystem.
11) Which statement reflects the greatest concern for the growth of genetically modified crops?
A
High yield crop varieties will reduce the use of fertilizers.
B
The cost of agriculture production will increase.
C
Genes for herbicide resistance might be transferred to weeds.
D
Insect resistant crop varieties might reduce the insect population.
12) Which argument supports the use of genetically engineered vaccines over traditional vaccines?
A
Genetically engineered vaccines cost more due to the research and development required.
B
Genetically engineered vaccines may be safer because they do not use live viruses.
C
Genetically engineered vaccines are more effective against unidentified pathogens.
D
Genetically engineered vaccines provide immunity for a short period of time which requires multiple doses.
13) Which statement explains why, over time, certain antibiotics have become ineffective against certain strains of bacteria?
A
The human body has become resistant to the antibiotics, so a new formula must be developed.
B
Some bacteria have developed a resistance to certain antibiotics, which may be passed to future generations.
C
Certain strains of bacteria were used in developing the antibiotics, and therefore they are immune to its effects.
D
The chemical and physical structure of the bacteria is the same as the structure of the antibiotics.
14) A research group is designing a new strain of yeast that can quickly ferment sugar to produce bio fuels. What will be a benefit of this research program?
A
It will reduce people's dependence on renewable fuel sources.
B
It will provide an easy way of generating fuel in households.
C
It will increase the use of yeast in producing all types of energy fuels.
D
It will provide an inexpensive and renewable source to generate fuel.
15) What is the most likely consequence of increased cellular respiration?
A
more energy available to the cell
B
cell death
C
increased oxygen released by the cell
D
decreased diffusion
16) An article was recently published in a scientific journal regarding cellular respiration. Which accurate statement might be included in the article?
A
Respiration captures energy from sunlight to fuel the cell.
B
The chloroplast is the organelle in which the respiration process takes place.
C
Respiration is an energy-releasing process used only by animals.
D
All organisms carry out the respiration process.
17) Which example is an appropriate adaptation for flight in birds?
A
high protein diet consisting primarily of insects
B
feathers, wings, and hollow bones
C
rapid response to stimuli such as predators
D
accurate vision and acute hearing
18) Thomas has a condition where his body does not produce myelin. Myelin forms an insulating layer around cells and allows stimuli to be transmitted between cells and throughout the body. Which cell type would be affected by Thomas' condition?
A
muscle
B
nerve
C
bone
D
blood
19) Which statement best explains why viruses are considered parasites?
A
They are specific and can only infect one type of cell.
B
They are unable to be destroyed by antibiotics.
C
They are nonliving and microscopic.
D
They harm the cells they enter.
20) Black fur in mice (B) is dominant to brown fur (b). What is the probability that an offspring will have the same phenotype as its parents in a cross between a homozygous black and a heterozygous black mouse?
A
75%
B
0%
C
50%
D
100%
*select an answer for all questions
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