stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
SCIENCE EXAM REVIEW 7A Flashcards | StudBud
Explore
/
SCIENCE EXAM REVIEW 7A
SCIENCE EXAM REVIEW 7A
144 terms
·
StudBud Administration
·
8 plays
exam on friday 5/20/2025
Flashcards
144 cards
F
Practice quiz
P
Host live
L
Questions
144
Answers
1
_____________ plants, such as mosses and liverworts, lack vascular tissues.
vascular
non-hydrophobic
non-vascular
hydrophobic
2
There are only four main types of tissue in the human body.
False
True
3
_______ ________ are regular changes in the biology and behavior of individuals that occur in 24-hour cycles.
None of the above
Circadian rhythms
Seasonal changes
Noncircadium rhythms
4
In prokaryotic cells, what is located within the nucleus.
the DNA
the nucleolus
the nuclear pores
Prokaryotic cells do not have a nucleus.
5
The stem of a horsetail is unique in that it
is hollow and allows for water transport
has tiny leaves
has cells that can perform photosynthesis
is often found in marshes
6
Which country produces the most crustaceans for food?
Indonesia
The United States
China
Japan
7
What are two of the most important nutrients for a healthy skeletal system.
calcium and potassium
calcium and vitamin C
vitamin C and vitamin D
calcium and vitamin D
8
What best allows fungi to able to absorb large amounts of nutrients?
All of the above
The ability to digest large molecules
The ability to make digestive enzymes
The large surface area of fungi
9
Osteoarthritis occurs when the cartilage at the ends of the bones breaks down.
True
False
10
Non-vascular plants have leaves, seeds, and flowers.
No
Yes
11
The nitrogen base that is complementary to thymine is _________.
adenine
cytosine
guanine
uracil
12
One function of proteins is to help the body fight infections.
True
False
13
Which cell structure separates the internal environment of the cell from the external environment?
cytosol
cell membrane
cytoplasm
14
Examples of nonvascular seedless plants include mosses, liverworts, and ____.
Heartworts
Hyperworts
None of the above
Hornworts
15
Tapeworms absorb nutrients directly from their host's digestive system.
False
True
16
Activities that increases bone strength include ________.
karate
all of the above
walking
weight lifting
17
What part of the non-vascular plant releases spores?
the leaf
the sporangium
the spore forming unit
the sporophyte
18
Good scientists are skeptical. They question the answers to their questions.
False
True
19
The tails of phospholipid molecules in the cell membrane are hydrophobic.
True
False
20
Glucose is a polysaccharide.
True
False
21
Which statements about prokaryotes is false?
Prokaryotic cells have membrane-bound organelles.
Prokaryotic cells are unicellular.
Prokaryotic cells have ribosomes.
22
How is fitness related to genes?
Higher fitness animal have better chance of passing their genes to next gen
Lower fitness animals have better chance of passing their genes to next gen
Animal with higher fitness use their genes more efficiently.
Animals with higher fitness make better and more useful genes.
23
Each phospholipid molecule in the cell membrane has two heads and a tail.
True
False
24
Which of the following is a detailed observation?
4 female and 5 male chimps under the age of 5 on the south side have died
Young chimps on the south side die due to a lack of nutrients in their diet
The chimps on one side of the jungle are dying
Chimps on the north side of the jungle are healthy
25
Bears are the best known example of an animal that hibernates.
True
False
26
What type of tissue includes the skin, the lining of the mouth and nose, and the lining of the digestive system?
connective
epithelial
muscle
nervous
27
Prokaryotic cells can exist as multicellular organisms.
False
True
28
Which animal behavior is probably most important to rabbits?
The ability to build nests.
All of the above are equally important.
The ability to avoid predators.
The ability to maintain body temperature by absorbing sunlight.
29
Human uses of materials produced by arthropods include
all of above
the use in surgical sutures and adhesives.
the use of silk produced by caterpillars.
the use in fishing nets.
30
Nucleic acids help cells make proteins.
True
False
31
A mother dog protecting her young and birds building nests for a safe place are both examples of animal behavior.
True
False
32
What cell structure is a thin phospholipid bilayer that surrounds a cell?
cell membrane
cytoplasm
cytosol
33
What is typically a final step in the scientific method?
draw conclusions
communicate results
form a hypothesis
make observations
34
Teenagers need about ________ of calcium daily.
1300 mg
1300 kg
130 mg
1300 grams
35
A _________ is a lipid molecule with a hydrophilic head and two hydrophobic tails.
phospho
phospholipid
plasma membrane
36
Approximately how many species of insects are edible?
about 200
almost 1,000
about 100
almost 2,000
37
_______ is a diseases in which bones lose mass and become more fragile than they should be.
Osteoporosis
Osteoarthritis
38
Why are clubmosses called by that name?
Because of the club-like clusters of sporophytes found on the plants.
Because of the club-like clusters of sporangia found on the plants.
Because of the club-like clusters of gametes found on the plants.
Because of the club-like clusters of gametophytes found on the plants.
39
The scientific method generally begins when a scientist makes ________.
an observation.
none of the above
an experiment.
a watch.
40
Hunting is a type of animal behavior.
False
True
41
What organisms are
NOT
multicellular
fungi
bacteria
animals
42
The plants that are non-vascular with leaf-like, lobed, or ribbon-like photosynthetic tissues, are called ______.
Hibiscus plants
Pitcher plants
Rose plants
Liverworts
43
Which arthropod produces a substance used in Kevlar vests, fishing nets, surgical sutures, and adhesives?
Caterpillars
Silkworm
Spiders
Bees
44
Most flatworms are parasites.
True
False
45
Where do fungi live?
inside other organisms
all of the above
under decaying logs?
deep in the soil
46
In a Yy x Yy cross, 75% will have yellow seeds and 25% will have green seeds.
False
True
47
Tt
x
Tt
, where T is a tall allele and t is a short allele. Of four possible offspring, what percent will be
Tt
50%
25%
75%
100%
48
Which of the following does modern science rely on to understand the physical world?
emotions, thoughts, and speech
laughs, giggles, and chuckles
experiments, theories, and thoughts
observable evidence, reasoning, and repeated testing
49
The four main organic compounds that make up living things are carbohydrates, lipids, nucleic acids, and _______.
blood cells
blood acids
proteins
sugar
50
Which type of tissue is made up of cells that band together and contract to allow for movement?
nervous
epithelial
muscle
connective
51
Cells are classified into two basic types based on whether or not they have a cell membrane.
True
False
52
The flatworms are the first significant phylum with bilateral symmetry.
False
True
53
The cell membrane ___________.
is semipermeable
has hydrophobic tails on the exterior
is made of three layers
54
Migrations are not seasonally or geographically available.
False
True
55
Glucose is a complex carbohydrate found in animals.
True
False
56
What organ system provides protection from injury, water loss, and physical defense against infection by microorganisms?
integumentary
lymphatic
urinary
immune
57
The biological clock is controlled by
the amount of light entering the eyes.
the temperature changes between the seasons.
the circadian rhythms.
all of the above
58
Scientists should be interested in finding the truth to natural phenomenon.
False
True
59
Circadian rhythms in humans are usually controlled by
what the person eats.
the amount of sleep a person has the previous night.
the temperature at a particular time of day.
the biological clock.
60
If genes control behaviors that increase fitness, how do the behaviors become more common in the species?
All of the above
By only using advantageous behaviors.
Through natural selection of the gene.
Through more frequent usage of the behavior.
61
In a DNA molecule, the nitrogen base adenine always bonds with what other nitrogen base?
Guanine
Thymine
Cytosine
Adenine
62
Which arthropods are the most likely pollinators?
All of the above are good pollinators
Bees and wasps
Ants, flies and beetles
Butterflies and moths
63
Arthropods used as a food source for humans include _______.
sea cucumbers, crab, and insects
jellyfish, sea cucumbers, and squid
insects, crabs, lobster, and shrimp
octopus, crab, and shrimp
64
The tails of phospholipid molecules in the cell membrane are hydrophobic.
False
True
65
What are proteins made of?
amino acids
nucleotides
lipids
monosaccharides
66
How many species of bees pollinate crops?
about 100
about 3,500
about 25
about 350
67
Migration is example of _____ behavior.
acyclic
cyclic
68
Choose the example of animal behavior.
All of the above
A rabbit runs away from a fox and other predator to stay alive.
A mother dog nurses her puppies to feed them.
A cat chases a mouse and tries to catch it.
69
The scientific method is the general process of a scientific method.
False
True
70
A proposed explanation that tries to explain an observation is called a ______.
hypothesis
fact
theory
statement
71
Which type of statement provides a possible answer to a scientific question based on scientific knowledge?
an experiment
a fact
a hypothesis
a theory
72
What do the four main macromolecules in living organisms contain?
phosphorus
nitrogen
carbon
73
Fats and oils are lipids.
True
False
74
A proposed explanation that tries to explain an observation is called a ________.
hypothesis
theory
fact
explanation
75
Xylem is the vascular tissue that transports water down a plant.
False
True
76
Which of the following result from animal behavior?
maintenence of body temperature
all of the above
getting food
protection of young
77
A ring of hooks on a tapeworm's head that help to attach it to a host are known as a scolex.
True
False
78
A scientist develops a new idea based on her observations of nature. What should she do next?
reject any evidence that conflicts with the idea
look only for evidence that supports the idea
claim that she has discovered a new theory
think of a way to test the idea
79
The smaller, repeating molecules that make up a DNA or RNA molecule are called _________.
nucleotides
monosaccharides
amino acids
fatty acids
80
Are there any blood vessels in the flatworms?
Yes
No
81
Osteoporosis causes
ligaments to tear.
bones to stop growing and break.
cartilage to break down.
bones to lose mass and become fragile.
82
Bones can break in the same way a pencil breaks when bent.
True
False
83
Clubmosses and spikemosses have ______ tissue, roots and microphylls. Bryophyte mosses do not.
Nonvascular seedless
Nonvascular seedless
Vascular
Vascular seedless
84
What non-vascular plant has a flattened appearance?
flatworts
liverworts
mosses
hornworts
85
Two guinea pigs crossed, one is
Ss
, other is
ss
. Possibility of a baby guinea pig from this cross having both
S
and
s
?
25%
50%
0%
75%
86
Nucleic acids are the main molecules that make up the bilayer of the cell membrane.
False
True
87
What is the first step in the repair of a bone fracture?
Compact and spongy bone form at the break site.
Bone cells travel to the break site and begin to rebuild the bone.
Spongy bone forms around compact bone at the break site.
Blood cells begin to rebuild the cartilage, so bone can from.
88
The key to being a great scientist is to ask questions.
False
True
89
What is the most common seedless vascular plant?
Roses
Tulips
Cypress trees
Ferns
90
Flatworms are parasites with only invertebrate hosts.
False
True
91
Insects and their grubs are extremely nutritious.
True
False
92
Which type of statement provides a possible answer to a scientific question based on scientific knowledge?
explanation
theory
fact
hypothesis
93
The nonvascular plants are :
Pteridophytes
Spermatophytes
Bryophytes
None of the above
94
A group of similar cells that work together is known as an organ.
False
True
95
Which is an example of a parasitic flatworm?
None of the above
Tapeworm
A and B
Fluke
96
Which eukaryotes are heterotrophs?
plants and animals
fungi and protists
fungi and animals
plants and fungi
97
Which of the following is an example of a complementary base pair in DNA?
A-U
C-G
A-G
T-C
98
The first step in a scientific investigation is always to develop a hypothesis.
True
False
99
What is a reason the redwoods in Yosemite National Park can grow so tall?
They have a nonvascular transport
None of the above
They have a vascular transport system
They do not require water
100
Which of the following statements about migration is true?
Migration is innate behavior that is caused by changes in the environment.
All of the above are true.
Animals migrate when the days get longer in the fall.
Migration is most common in birds, amphibians, and insects.
101
Which of the following is
NOT
part of the scientific method.
doing tests
collecting evidence
keeping experimental discoveries a secret
applying logic
102
The two strands of DNA are held together by chemical bonds between the _________.
3-carbon sugars
phosphate groups
nitrogenous bases
5-carbon sugars
103
The plasma membrane is semi-permeable, allowing only certain materials through.
False
True
104
A questioning attitude is part of what it means to think like a scientist.
False
True
105
The cells of all organisms are separated from the outside by a ________.
cytoplasm
cell membrane
cell core
106
What organisms are made of eukaryotic cells?
bacteria
archaea
protists
107
When the body is exercised regularly by performing weight-bearing activity, bones add cells to increase their density.
True
False
108
If one DNA strand reads CCGTAATGCAT, what will be the sequence of the complementary strand?
GGCATTACGTA
CCGATTAGCTA
CCGTAATGCAT
GGCTAATCGAT
109
Scientific knowledge can change based on new __________.
theories
none of the above
evidence
experiments
110
In a prokaryotic cell, the DNA is located in the __________.
enzyme
cytoplasm
phospholipid
nucleus
111
The leaf of a fern is known as a
fern leaf.
frond.
ferntail.
sporophyte.
112
The scientific method is the general process of a scientific investigation.
False
True
113
The biological clock controls daily migration patterns.
False
True
114
The key to being a great scientist is to ask questions.
True
False
115
Bacterial cells lack a nucleus.
True
False
116
A heterozygous purple flower crosses with recessive white flower, what is the ratio of purple to white flowers offspring
50% purple and 50% white
All white
25% white and 75% purple
All purple
117
What is true regarding cellular structures?
No cellular structure in prokaryotes can be found in eukaryotes
Organelles let eukaryotic cells function more specialized than prokaryotics
Multicellular organisms include both prokaryotes and eukaryotes
118
________ refers to seasonal movements of animals from one area to another.
migration
incarnation
traveling
none of the above
119
The sugar in DNA is called _____.
sucrose
ribose
deoxyribose
glucose
120
Many animal behaviors are to provide food.
True
False
121
Hornworts were the first plants to have vascular tissues
False
True
122
What best allows fungi to be able to absorb large amounts of nutrients?
The ability to digest large molecules
The large surface area of fungi
The ability to make digestive enzymes
All of the above
123
Which example best illustrates the scientific method with respect to developing scientific questions?
memorizing a list of different animals that produce light
learning the scientific names of fire flies
catching fire flies and putting them in a glass jar
wondering why fire flies produce light
124
Regular changes in a behavior that occurs in a 24 hour cycle is known as a :
Master clock
Circadian rhythm
Biological clock
None of the above
125
Which molecule contains genes and makes up our chromosomes?
ATP
protein
DNA
RNA
126
Good sources of calcium are yogurt, milk, and cheese.
True
False
127
Eukaryotic cells store genetic material in the nucleus.
True
False
128
Hydrophobic molecules are "water-fearing".
False
True
129
What is an example of a flatworm?
earthworm
segmented worms
roundworm
tapeworm
130
What describes the meaning of the result or outcome of experiment based on the evidence?
hypothesis
observation
experiment
conclusion
131
Insects are eaten by about 1 of every 3 people on Earth.
True
False
132
Which term is used to describe the observations a scientist makes during an experiment?
hypothesis
evidence
experiment
conclusion
133
What is the role of the cardiovascular system?
It is involved in body movement and heat production.
It produces hormones that communicate between cells.
It moves wastes and carbon dioxide away from cells.
It transports oxygen, hormones, and nutrients to the body cells.
134
Is there a relationship between genes and fitness?
No
Yes
135
How many different species of fungi are thought to exist?
about 100,000
about 1,000
about 1,500,000
about 1,000,000
136
Which is a type of animal behavior?
Nest building by wasps.
A mother nursing her babies.
All of the above are animal behaviors.
Lizards raising body temperature by lying in the sun.
137
What molecule is made of two strands of nucleotides formed into a double helix?
DNA
Protein
RNA
138
Which organelle is the control center of eukaryotic cells?
nucleus
ribosome
cell membrane
vacuole
139
Complementary bases are connected by hydrogen bonds. How many hydrogen bonds connect a cytosine to a guanine?
2
3
1
4
140
Clubmosses, ferns, horsetails, and whisk ferns, are all examples of vascular plants. What else do they have in common?
contain fronds
rigid stems
seedless
no leaves
141
To obtain their nutrition, cells of fungi absorb nutrients from their environment.
False
True
142
Fungi are essential members of all ecosystems. What best describes the role of fungi in ecosystems?
Producer - the fungi makes the food for the ecosystem
Decomposer - the fungi
Carnivore - the fungi feeds on animals
Herbivore - the fungi feeds on plants
143
Which of the following is
NOT
a characteristic of a scientific hypothesis?
testable
able to be proven wrong
provide measurable results
always proven true
144
Which organ system collects, transfers, and processes information?
cardiovascular
endocrine
nervous
digestive
