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WorksheetsISTEP Science Review 4
Total questions: 16
Worksheet time: 8mins
Name
Class
Date
1.
Shrimp that live in the cold waters off Alaska will die if introduced into warm water. One likely reason these shrimp do not survive is that enzymes in the shrimp
a)
start to replicate
b)
change shape
c)
are composed of fat molecules that melt
d)
break down into small starch molecules
2.
The diagram below represents a cell and some molecules in its environment. Which molecule would require the use of energy in order to be brought into the cell?
a)
1
b)
2
c)
3
d)
4
3.
Which population would be most immediately affected by the removal of the lizard population?
a)
sedges
b)
algae
c)
ants
d)
centipedes
4.
As it grows from a seed to a mature plant, a plant will grow taller and thicker. Which are abiotic factors most responsible for the increase in the mass of the plant?
a)
water, minerals, bacteria
b)
sunlight, oxygen, plant receptors
c)
minerals, water, plant enzymes
d)
water, sunlight, carbon dioxide
5.
Which statement is correct concerning hereditary information?
a)
A chromosome is composed of many genes.
b)
A gene is composed of many chromosomes.
c)
Each chromosome carries the same information.
d)
Each gene carries the same information.
6.
When a paramecium, a single-celled organism, is living under stressful conditions, it sometimes switches from asexual to sexual reproduction. The main advantage when this switch occurs is that the paramecium is most likely to
a)
When a paramecium, a single-celled organism, is living under stressful conditions, it sometimes switches from asexual to sexual reproduction. The main advantage when this switch occurs is that the paramecium is most likely to
b)
increase variation among its offspring
c)
avoid having to find a mate
d)
produce clones of itself
7.
A strand of DNA in a skin cell contains the bases: A-T-G-C-C-A-T-C-G-G-T-A
After the cell is exposed to ultraviolet light, the strand contains the bases:
A-T-G-G-C-C-A-T-C-G-G-T-A
Which statement describes the result of this exposure?
After the cell is exposed to ultraviolet light, the strand contains the bases:
A-T-G-G-C-C-A-T-C-G-G-T-A
Which statement describes the result of this exposure?
a)
A new base has been inserted.
b)
A base has been deleted.
c)
One base has been substituted for another.
d)
There have been no changes in the bases.
8.
A population composed of tan snails and black snails inhabits the same sandy beach. A nearby volcano erupted, and black lava particles washed down to the beach. The once tan beach was now black. The graph shows the population of tan snails and black snails before and after the volcanic eruption. Which statement concerning the snails is correct?
a)
The lava particles turned the tan snails black.
b)
The tan snails will become extinct.
c)
The black snails had an adaptive advantage.
d)
The tan snails preyed on the black snails.
9.
A number of freshly prepared disks were placed in five containers. These containers were then each exposed to light of a different color. The results of the investigation are shown in the graph. Which color of light appears to be least effective for photosynthesis in spinach leaves?
a)
white
b)
blue
c)
green
d)
red
10.
A student proposes that, if volunteers warm up before squeezing a clothespin for one minute, they will increase the number of times that they can squeeze it without tiring. He states that this is because their muscles will be better prepared for exercise. The data from an experiment are shown in the data table. Which trial from the chart above provides the best data to support his claim?
a)
1
b)
2
11.
The diagram represents a metabolic process. This process best represents
a)
the bonding of amino acids to form a starch molecule
b)
the digestion of amino acids to form a starch molecule
c)
the bonding of simple sugars to form a starch molecule
d)
the digestion of simple sugars to form a starch molecule
12.
Structures in an animal cell are represented in the diagram.
Which row in the chart correctly identifies the functions of structures A, B, and C
Which row in the chart correctly identifies the functions of structures A, B, and C
a)
1
b)
2
c)
3
d)
4
13.
Which activity would be an appropriate first step when designing an experiment?
a)
reporting a conclusion based on multiple experimental trials
b)
researching the problem, using information from a variety of sources
c)
creating a data table to organize experimental observations
d)
repeating the experiment with a different hypothesis
14.
Caffeine is a compound found in the seeds of many different plants, such as coffee beans, cola nuts, and cacao beans (the source of chocolate). The presence of this chemical in all three types of plants suggests that these plants
a)
inherited identical mutations
b)
share a common ancestry
c)
were exposed to the same type of radiation in the past
d)
were cloned from a caffeine plant
15.
When an organism reproduces asexually, it usually has
a)
only one parent, and half as much DNA as the parent
b)
only one parent, and the same chromosome number as the parent
c)
two parents, and twice as much DNA as either parent
d)
two parents, and the same chromosome number as each parent
16.
The diagram represents a food pyramid in an ecosystem. The best explanation for the decrease in the amount of energy transferred to each succeeding level is that much of the energy is
a)
consumed by predators
b)
released as heat
c)
stored within inorganic materials
d)
used in photosynthesis
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