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1
Living things _____.
A)respond to stimuli
B)reproduce
C)have adaptations
D)all of the above
2
The smallest unit of matter that can enter into chemical combination is a _____.
A)cell
B)atom
C)molecule
D)neutron
3
The smallest living unit is a _____.
A)cell
B)atom
C)molecule
D)tissue
4
Similar cells with a similar function describes a _____.
A)organ
B)population
C)tissue
D)organ system
5
All of the gray squirrels in a temperate deciduous forest are referred to as a _____.
A)community
B)population
C)ecosystem
6
Atoms contain molecules.
A)True
B)False
7
Unicellular organisms cannot respond to their environment.
A)True
B)False
8
The ultimate source of energy for nearly all living things is _____.
A)fossil fuels
B)the sun
C)thermal vents
D)water
9
Homeostasis is _____.
A)balancing internal and external conditions
B)wild fluctuations in internal conditions
C)the transformation of the sun's energy into organic molecules
D)the maintenance of internal conditions within certain limits
10
The ability to respond _____.
A)ensures survival of the organism
B)allows the organism to carry on its daily activities
C)both A and B
11
Homeostasis is maintained by _____.
A)the nervous system
B)hormones
C)both A and B
12
Only plants are able to capture solar energy and carry on photosynthesis.
A)True
B)False
13
The process that transforms solar energy into chemical energy in the bonds of organic molecules is called _____.
A)metabolism
B)homeostasis
C)photosynthesis
D)natural selection
14
All cells have a copy of the hereditary material, DNA.
A)True
B)False
15
The instructions for the organization and metabolism of living things are encoded in the _____.
A)genes
B)plasma membrane
C)cell wall
D)ribosomes
16
Some organisms reproduce by simply splitting in two.
A)True
B)False
17
In most multicellular organisms, reproduction involves the pairing of a sperm from one partner and an egg from the other partner.
A)True
B)False
18
Penguins are adapted to an aquatic existence in the _____.
A)Arctic
B)Antarctic
C)both A and B
19
Which of the following is not an adaptation of penguins?
A)forelimbs proportioned for flying
B)flat feet
C)a bill adapted to eating small shellfish
D)stubby flattened wings
20
Natural selection results in genetic changes in _____.
A)an organism
B)a species' members
C)both A and B
21
Organisms become better suited to a particular environment through the process of _____.
A)artificial selection
B)homeostasis
C)natural selection
D)metabolism
22
The characteristics of living things suggests that living things descended from several different ancestors.
A)True
B)False
23
The great diversity of life forms is the result of _____.
A)adaptations to different environments
B)descent from a common ancestor
C)both A and B
24
A species is defined as a group of _____.
A)similarly sized organisms
B)interbreeding individuals
C)organisms that share a common ancestor
D)sexually reproducing organisms
25
Communities are static and unchanging.
A)True
B)False
26
An ecosystem is comprised of _____.
A)the physical environment
B)interacting populations
C)both A and B
27
Energy flows through an ecosystem and is eventually converted to heat.
A)True
B)False
28
The cycling of nutrients through ecosystems depends on _____.
A)decomposition of organisms after they die
B)respiration
C)photosynthesis
D)all of the above
29
Which are the most complex ecosystems?
A)coral reefs
B)deserts
C)tropical rain forests
D)savannahs
30
Mining accounts for about 60% of tropical deforestation.
A)True
B)False
31
The discipline of identifying and classifying organisms according to certain rules is called _____.
A)taxonomy
B)statistics
C)ecology
D)taxidermy
32
In the binomial system, the first word of the name is the _____.
A)species
B)genus
C)family
D)domain
33
Similar genera are placed into _____.
A)families
B)orders
C)species
D)phyla
34
The Domain _____ contains prokaryotic unicellular organisms.
A)Eukarya
B)Archaea
C)Bacteria
D)both B and C
35
Organisms in the Domain _____ have a membrane bound nucleus.
A)Eukarya
B)Archaea
C)Bacteria
36
The most inclusive group of organisms is a _____.
A)species
B)phylum
C)domain
D)kingdom
37
All the organisms classified into the Domain Eukarya are multicellular.
A)True
B)False
38
A unicellular, eukaryotic organism would be classified as ______.
A)Bacteria
B)Protist
C)Plant
D)Animal
39
The correct way to write the scientific name of the garden pea is _____.
A)Pisum Sativum
B)PISUM SATIVUM
C)Pisum sativum
D)PISUM sativum
40
Hypotheses can be tested in _____.
A)laboratory experiments
B)field experiments
C)both A and B
41
When a person uses isolated facts and creative thinking to arrive at an explanation for something, he/she used _____ reasoning.
A)inductive
B)deductive
42
Deductive reasoning begins with a general statement that implies a specific conclusion.
A)True
B)False
43
A control group experiences all the steps in an experiment.
A)True
B)False
44
New data can support or reject a hypothesis.
A)True
B)False
45
The component in an experiment being tested is called the _____ variable.
A)control
B)experimental
C)dependent
46
Data should be _____.
A)objective
B)subjective
47
An experiment is done to see if eating breakfast affects students' performance on exams. The experimental variable is _____.
A)the students' scores on the exams
B)the age of the student
C)whether the student has breakfast or not
D)whether the student drinks coffee or not
48
Which of the following is an assumption scientists must accept when performing the scientific process?
A)natural laws are not affected by time
B)nature is real, understandable, and knowable by observation
C)nature is orderly and uniform
D)all of the above
49
The explanation that life comes only from life is associated with the _____ theory.
A)biogenesis
B)gene
C)evolution
D)cell
50
Science is impartial and does not make ethical or moral decisions.
A)True
B)False
51
The theory that accounts for the differences that divide and the unity that joins all living things is the _____ theory.
A)cell
B)evolution
C)biogenesis
D)gene
52
Theories that are generally accepted by an overwhelming number of scientists are called _____.
A)principles
B)laws
C)both A and B
53
The first step in the scientific method is _____.
A)make conclusions
B)make observations and consider previous data
C)formulate a hypothesis
D)test a related hypothesis
54
The word theory is reserved for a conceptual scheme that is supported by a broad range of _____.
A)data
B)observations
C)experiments
D)all of the above
55
Scientists always gather data by experimenting.
A)True
B)False
56
If an experiment is done to see if a dietary supplement affects the weight gain of chickens, what variables need to be controlled?
A)where the chickens are kept
B)the availability of water
C)the temperature of the surroundings
D)all of the above
57
If the research subjects are different, it is hoped that random selection distributes them equally among the groups.
A)True
B)False





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