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Worksheets8th Grade CBA #1 Review
Total questions: 80
Worksheet time: 1hrs 6mins
Name
Class
Date
1.
Which kingdom includes only organisms that are heterotrophic and most of which reproduce sexually?
a)
Fungi
b)
Plantae
c)
Protista
d)
Animalia
2.
A eukaryote that makes its own food would be classified as a member of which kingdom?
a)
Fungi
b)
Animalia
c)
Bacteria
d)
Plantae
3.
Mushrooms, puffballs, bread mold & athlete's foot are all part of Kingdom Fungi. What characteristics were used to place them in this kingdom?
a)
Prokaryotic, autotrophic, can be unicellular or multicellular & can reproduce either asexually and sexually
b)
Prokaryotic, heterotrophic, can be unicellular or multicellular & can reproduce either asexually and sexually
c)
Eukaryotic, autotrophic, can be unicellular or multicellular & can reproduce either asexually and sexually
d)
Eukaryotic, heterotrophic, can be unicellular or multicellular & can reproduce either asexually and sexually
4.
The main function of the nervous system is to:
a)
Support and protect delicate organs such as the brain, lungs, and heart
b)
Supply oxygen from the lungs to the blood
c)
Pump oxygen and nutrients through the blood to every part of the body
d)
Coordinate all actions and reactions of the body
5.
Skin is filled with many nerves so that the body can detect pain, sensation, pressure, and temperature. If the body gets too warm, then the integumentary system responds by having:
a)
Oil glands to moisten the skin's surface
b)
Veins pump more blood closer to the skin's surface
c)
The adrenal glands send hormones to the skin's surface
d)
Sweat glands secrete sweat to cool the skin's surface
6.
The function of the respiratory system is to:
a)
Convert food into simpler substances for the body to absorb as nutrients
b)
Supply the blood with oxygen and remove carbon dioxide in the lungs
c)
Send signals in the form of hormones to the body to control growth, reproduction, and metabolism
d)
Circulate blood through the body to supply cells with oxygen and nutrients
7.
The body system which filters water and wastes from the blood is the:
a)
Excretory system
b)
Endocrine system
c)
Digestive system
d)
Integumentary system
8.
Which is the function of the endocrine system
a)
to produce offspring
b)
to separate and eliminate wastes
c)
to protect the body from disease
d)
to produce hormones that regulate the body
9.
Which is NOT a function of the skeletal system?
a)
Support the body
b)
Protect vital organs
c)
Separate and eliminate waste
d)
Serve as a framework for the attachment of muscle
10.
Which cell structure would carry out the function of photosynthesis?
a)
Mitochondria
b)
Chloroplast
c)
Nucleus
d)
Vacuole
11.
Both the cell membrane and the cell wall act to protect the organelles within a cell. Which of the following best describes how the cell wall is different from the cell membrane?
a)
The cell wall is much thinner and more flexible than the cell membrane
b)
Cell walls are only found in primitive cells and are never found in plant or animal cells
c)
The cell wall is found in plant cells but not animal cells
d)
The cell wall is found in both plant and animal cells
12.
What will cause plant leaves to wilt?
a)
The chlorplasts absorb less light energy
b)
The mitochondria change shape
c)
The vacuoles shrink
d)
The cell wall thickens
13.
Which would result in the most diverse offspring?
a)
Bees bringing pollen from the flower of one plant to the flower of another
b)
An orchid with a slower structure that forces self-pollination
c)
Planting a cutting from a potato to grow a new potato plant
d)
An amoeba in a fresh water pond reproducing through binary fission
14.
If an organism reproduces asexually, its offspring will most likely be _____.
a)
Genetically identical to each other
b)
Genetically different from each other
c)
Produced as a result of fertilization
d)
Produced by specialized cells known as gametes
15.
Certain species of whiptail lizards have only female individuals and no males. These lizards reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?
a)
A new population can be established by a single individual in a short period of time
b)
All members of a population are genetically very similar and less able to survive environmental changes
c)
They are smaller than lizards that reproduce sexually
d)
They are more likely to develop a variety of tail lengths
16.
The hydra is a very small, simple animal that lives in water. Hydras reproduce asexually by budding, a process in which a bud breaks off an adult hydra and floats away. Which of the following best describes a hydra bud?
a)
A hydra bud contains genetic material from its two parents
b)
A hydra bud is genetically identical to the parent hydra
c)
A hydra bud has different mutations than the parent hydra
d)
A hydra bud has half as much genetic material as the parent hydra
17.
Which of the following statements is NOT based on the cell theory?
a)
All living things are made of cells
b)
Cells can only come from other cells
c)
Cells carry on similar functions and are the basic unit of life
d)
Cells must contain chloroplasts
18.
Which best represents the relationship between a cell, a nucleus, a gene, and a chromosome?
a)
Cell - Nucleus - Gene - Chromosome
b)
Gene - Chromosome - Nucleus - Cell
c)
Nucleus - Cell - Gene - Chromosome
d)
Cell - Nucleus - Chromosome - Gene
19.
In order to sustain itself, the food chain represented in the energy pyramid must have --
a)
more carnivores
b)
more herbivores
c)
more decomposers
d)
a constant source of energy
20.
What percent of the energy from the producer level is available to the herbivores?
a)
100%
b)
90%
c)
10%
d)
1%
21.
Which level of an energy pyramid contains the least amount of original energy provided by the sun?
a)
Producers
b)
Herbivores
c)
Primary consumers
d)
Secondary consumers
22.
Which statement is best supported by the energy pyramid?
a)
Herbivores receive energy from the secondary consumers
b)
Plants receive energy from the carnivores
c)
Primary consumers provide energy to carnivores
d)
Secondary consumers provide energy to producers
23.
Pesticides are sprayed near a pond and kill most of the insects living in the pond ecosystem. Which consumer is most likely to survive the insect decline in this ecosystem?
a)
Fish
b)
Snail
c)
Water lily
d)
Frog
24.
A disease enters the food web and kills many of the frogs. Which organism is most affected by the decline of the frogs?
a)
Fish
b)
Snail
c)
Water lily
d)
Turtle
25.
All of the following are examples of a producer/consumer relationship except --
a)
water lily and turtle
b)
algae and snail
c)
frog and heron
d)
cattails and insects
26.
Which organism is considered a primary consumer?
a)
Heron
b)
Snail
c)
Frog
d)
Water lily
27.
Which of the following represents the correct flow of energy in a food chain found within the food web?
a)
Water lily - insect - frog - turtle
b)
Algae - insect - frog - fish - heron
c)
Heron - frog - insect - algae
d)
Cattail - insect - fish - turtle - heron
28.
Bacteria live in our intestines, use indigestible foods, and produce vitamin K for our bodies. This type of relationship is called --
a)
predator-prey
b)
mutualism
c)
commensalism
d)
parasitism
29.
The relationship of a hookworm attaching itself to the intestines of a pig and absorbing nutrients from the pig is called --
a)
commensalism
b)
parasitism
c)
mutualism
d)
competition
30.
In the symbiotic relationship between the pig and the hookworm, the pig is called the --
a)
producer
b)
prey
c)
host
d)
mutualist
31.
A killer whale hunts, captures, and eats a seal. Which of the following best describes the relationship between the whale and the seal?
a)
The whale is a producer and the seal is a consumer
b)
The whale is the prey and the seal is the predator
c)
The whale is the predator and the seal is the prey
d)
The whale is a host and the seal is a parasite
32.
Barnacles are ocean organisms that often attach themselves to whales and filter food from the water as the whale swims. The barnacles do not affect the whale. This type of relationship is called --
a)
predator-prey
b)
mutualism
c)
parasitism
d)
commensalism
33.
Which of the following organisms is both a predator and a prey?
a)
Heron
b)
Fish
c)
Snail
d)
Insect
34.
Which of the following best describes a parasite-host relationship?
a)
Water lily and turtle
b)
Tick and heron
c)
Insect and fish
d)
Frog and tick
35.
You watch a video of a shark eating a small fish. What kind of feeding relationship did you observe?
a)
parasite/host
b)
herbivore/omnivore
c)
producer/consumer
d)
predator/prey
36.
What biotic factor might an animal compete for in a tundra ecosystem?
a)
Air
b)
Prey
c)
Space
d)
Water
37.
Which of the following would be an investigation into how an organism in this ecosystem depends on an abiotic factor?
a)
a study of fish eating algae
b)
a study of fish swimming in water
c)
a study of fish mating with another fish
d)
a study of fish seeking shelter behind a plant
38.
Scientists determine that twenty deer can survive in a selected area with the current resources. This number is considered _____
a)
the carrying capacity
b)
the limiting factor
c)
the abiotic factor
d)
the ecos factor
39.
Which would be the most direct cause of an increase in the cacti population?
a)
The population of kangaroo rats decreased
b)
The population of shrubs decreased
c)
The population of insects increased
d)
The population of coyotes increased
40.
A scientist is investigating producer/consumer relationships in a lake. Which pair of organisms is she most likely observing?
a)
Frogs and snakes
b)
Algae and snails
c)
Dragonflies and fish
d)
Water lilies and cattails
41.
In which situation would you expect the lowest level of competition among populations for biotic and abiotic factors in an ecosystem?
a)
A forest experiences a rainfall
b)
A grassland experiences a flood
c)
A mountain experiences a drought
d)
An arctic ecosystem experiences warm temperatures
42.
Which of the following is a predator/prey relationship shown within the food web?
a)
A seal eats a squid
b)
A fish eats a squid
c)
A seal eats a penguin
d)
A squid eats a penguin
43.
There are 3 species of birds on an island. Bird A has a heavy bill for eating big seeds and. Bird B has a sharply pointed bill for eating insects. Bird C has a sharp bill for eating insects and small seeds. If the insect population suddenly disappeared one season, which bird or birds would probably be least affected that season?
a)
Bird A
b)
Bird B
c)
Bird C
d)
Bird A and Bird B
44.
Which stage represents the establishment of the pioneer organisms?
a)
1
b)
2
c)
3
d)
4
45.
Which stage represents the climax community?
a)
2
b)
3
c)
4
d)
5
46.
What is an example of a behavior that prey might use to avoid being eaten?
a)
camouflage
b)
running quickly
c)
staying in a group
d)
all of these
47.
Which of the following is part of the theory of natural selection?
a)
Individuals that acquire characteristics will pass those characteristics on to their offspring
b)
Most offspring of a species will survive to reproduce
c)
Individuals within the same population have identical traits
d)
Individuals that have favorable traits are more likely to survive and reproduce
48.
What is the name for a period of reduced activity that some animals experience during the winter months?
a)
hibernation
b)
estivation
c)
seasonal behavior
d)
learned behavior
49.
Under what conditions are resources such as water, food, or sunlight likely to be limiting factors?
a)
when population size is decreasing
b)
when predators eat their prey
c)
when the population is small
d)
when a population is approaching the carrying capacity
50.
Which statement best describes how the needs of plants and animals compare in a forest ecosystem?
a)
Plants and animals compete for resources such as food, space, and mates
b)
Plants and animals compete for resources such as sunlight and soil nutrients
c)
Plants compete for resources such as sunlight, space, water, and soil nutrients while animals compete for resources such as food, space, and mates
d)
Plants compete for resources such as food, space, and mates while animals compete for resources such as sunlight and soil nutrients
51.
This cat is a member of which genus and species?
a)
Lynx rufus
b)
Puma concolor
c)
Lynx Canadensis
d)
Herpailurus yaguarondi
52.
The overall charge of the nucleus is...
a)
Positive
b)
sometimes positive and sometimes negative
c)
neutral
d)
negative
53.
Neutrons are neutral. This means that...
a)
neutrons are not involved in chemical reactions
b)
neutrons are neither acidic nor basic
c)
neutrons do not have a charge
d)
neutrons do not have a mass
54.
Which of the following best describes an electron?
a)
it has no charge and about the same mass as a proton
b)
it has a negative charge and much less mass than a proton
c)
it has a positive charge and much more mass than a neutron
d)
it has a negative charge and about the same mass as a neutron
55.
Which group on the periodic table is most reactive?
a)
Group 3
b)
Group 1
c)
Group 18
d)
Group 12
56.
Which group on the periodic table is least reactive?
a)
Group 1
b)
Group 13
c)
Group 5
d)
Group 18
57.
Which property of an unknown element determines the other elements it will react with?
a)
The total number of neutrons
b)
The total number of particles
c)
The number of protons in the nucleus
d)
The number of valence electrons
58.
What do periods determine on the periodic table?
a)
Valence electrons
b)
Number of protons
c)
Number of energy levels
d)
Number of neutrons
59.
What do groups determine on the periodic table?
a)
Number of protons
b)
Number of valence electrons
c)
Number of neutrons
d)
Number of energy levels
60.
Which atom is more chemically reactive?
a)
If it has 2 valence electrons
b)
If it has 4 valence electrons
c)
If it has 18 valence electrons
d)
If it has 1 valence electron
61.
Sodium, aluminum, and chlorine are alike in that they all three _____
a)
are compounds
b)
are nonmetals
c)
have one valence electron
d)
have three energy levels
62.
All of these are examples of compounds except _____
a)
H
b)
NaCl
c)
H2O
d)
PbS
63.
Which of these two combinations of elements are least likely to form a compound?
a)
helium + neon
b)
sodium + chlorine
c)
hydrogen + oxygen
d)
aluminum + oxygen
64.
How many atoms are in CuSO4?
a)
3
b)
4
c)
5
d)
6
65.
How many elements are in NaOH3
a)
3
b)
4
c)
5
d)
6
66.
Most of an atom's mass consists of _____
a)
electrons
b)
electrons and neutrons
c)
protons and neutrons
d)
electrically charged particles
67.
What does the atomic number tell you?
a)
The number of neutrons
b)
The number of protons and neutrons
c)
The number of protons and electrons
d)
The number of electrons
68.
What does the atomic mass tell you?
a)
The number of neutrons
b)
The number of neutrons and protons
c)
The number of electrons
d)
The number of electrons and neutrons
69.
Valence electrons are the _____
a)
electrons inside the nucleus
b)
2 electrons in the 1st energy level
c)
beta particles
d)
electrons in the outermost energy level
70.
How many phosphorous atoms are in the formula for Sr3(PO4)2?
a)
2
b)
3
c)
4
d)
8
71.
How many Sodium atoms are in the chemical formula for 3C5H8NNaO4?
a)
15
b)
3
c)
12
d)
24
72.
If you have a shiny element that conducts electricity and is able to be pounded into thin sheets, then you have a _____
a)
metal
b)
nonmetal
c)
metalloid
d)
other
73.
How many nitrogen atoms are in the chemical formula for 4(NH4)2SO4?
a)
1
b)
4
c)
2
d)
8
74.
How many elements are found in the chemical formula for 4(NH4)2SO4?
a)
4
b)
16
c)
2
d)
3
75.
Does this chemical equation follow the Law of Conservation of Mass?
CH2 + O2 --> CO2 + H2O
CH2 + O2 --> CO2 + H2O
a)
Yes
b)
No
76.
Does this chemical equation follow the Law of Conservation of Mass?
2H2O + 3O2 --> 2H + 2HO4
2H2O + 3O2 --> 2H + 2HO4
a)
Yes
b)
No
77.
Which of these has to occur in order for there to be a chemical change?
a)
Melting
b)
Fizzing
c)
Cutting
d)
Mixing
78.
What are 5 different things that need to occur for there to be a chemical change?
a)
Fizz, Aroma, Recolor, Temperature, Substance (new)
b)
Fire, Acid, Recolor, Temperature, Substance (new)
c)
Fizz, Aroma, Recoil, Temperature, Substance
d)
Folding, Aroma, Recolor, Tempering, Substance (new)
79.
Is boiling water a physical change or a chemical change?
a)
Physical
b)
Chemical
80.
Escherichia coli, or E. coli, is a single-celled, prokaryotic organism. These characteristics require E. coli to be classified in the kingdom--
a)
Protista
b)
Fungi
c)
Bacteria
d)
Plantae
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