Grade 10

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Grade 10 Objective 2
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1 The illustration above shows a
cell model with starch solutions both inside and
outside the cell. In which of the following
situations will the solution rise highest in
the tube? A B C D
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2 Which would most likely cause the
liquid in Tube A to rise? F Starch
concentrations being equal on each side of the
membrane G Water passing from a
region of lower starch concentration to
one of higher starch concentration H Water
and starch volumes being the same J Solute in
the tubes changing from a higher temperature to a
lower temperature
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3 Energy conversion within an animal cell
would be severely limited by removal of the
cells A mitochondria B
chloroplasts C plastids D lysosomes
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4 Food provides the human body with all of
the following except F calories G
amino acid H hydrochloric acid J lipids
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5 The diagram shows different
parts of a human sperm cell. Which part of the
cell is most likely specialized for
mobility? A Q B R C S D T
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6 Which of these is a function of the cell
membrane in all cells? A Producing cellular
nutrients B Preserving cellular wastes C
Neutralizing chemicals D Maintaining
homeostasis
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7 The structures marked 3 in the
diagram are responsible for A absorbing
oxygen B carrying genetic codes C lining
up amino acids D serving as an anticodon
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8 DNA molecules separate into single
strands, which are then used to construct two
identical strands of DNA. This process ensures
that the A cytoplasm is in equilibrium B
mitochondria are genetically identical to the
chloroplasts C parent cells use little ATP D
daughter cells are genetically identical to
the parent cells
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3' AATCGC 5' 9 Which of the following
nucleotide base sequences complements the
section of DNA modeled above? F 5' UTCGCA
3' G 5' TTAGCG 3' H 5' GCGATT 3' J 5'
TTUCGC 3'
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10 The information in the box
identifies some of the organs of the kitten.
Which of the following is identical for every
cell in each of the four organs? A Amount
of ATP B Function of cell C Size of
cells D Genes in DNA
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11 Which molecule resembles the shape of
a twisted ladder? A DNA B Sugar C
ATP D Lipid
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12 The diagram represents the
chromosomes of a person with a genetic disorder
caused by nondisjunction, in which the
chromosomes fail to separate properly. Which
chromosome set displays nondisjunction? F
2 G 8 H 21 J 23
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13 The chain above represents
three codons. Which of the following changes
would be expected in the amino acid chain if the
mutation shown above occurred? F The amino
acid sequence would be shorter than expected. G
The identity of one amino acid would change. H
The amino acid sequence would remain
unchanged. J The identities of more than one
amino acid would change.
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14 Ultraviolet radiation can cause
mutations in the DNA of skin cells that have
been overexposed to the sun. This mutated
DNA has no effect on future offspring because
F changes in skin cell DNA are homozygous
recessive G mutations must occur within the
RNA codons H offspring reject parental skin
cells J only changes to gamete DNA can be
inherited
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15 The diagram shows three
generations of cells produced by a single cell
through mitosis. In the process, a single
mutation occurred at the point indicated. The
mutation caused changes within a dominant
allele. How many of the 15 cells contain the
mutation? Record and bubble in your answer on
the answer document.
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16 This illustration is an example of a
normal DNA sequence. Which of the following
represents a single base change in the sequence?
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17 In order for a species to survive, it
must be able to F consume a wide variety
of food G reproduce successfully H
maintain a constant body temperature J
destroy competing species
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18 If an organism has the genotype
RrSsTtUu, what proportion of its gametes will be
RSTU? A B C D
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19 Dogs (Canis familiaris) are most
closely related genetically to which of the
following organisms? A African hunting dog
(Lycaon pictus) B Gray wolf (Canis lupus) C
Grizzly bear (Ursus arctos) D Domestic cat
(Felis catus)
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20 What trait will most likely be
observed in all offspring of the above set of
parents? A Green feathers B Yellow
feathers C Long beak D Short beak
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21 According to the table, which of
the following phenotypes would probably occur in
all the offspring from the parents shown
above? F Solid gray fur G Striped gray
fur H Green eyes J Blue eyes
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22 A pea plant with the genotype TtWW is
crossed with a pea plant with the genotype ttWw.
How many different genotypes can be expressed in
the offspring? F 1 G 2 H 3 J 4
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23 If a plant that is homozygous
tall and wrinkled is crossed with a short,
wrinkled plant, which percentage of genotypes
would most likely be found in the
first-generation offspring? F 50 TTss, 50
ttSS G 100 TtSs H 100 Ttss J 50 TtSS,
50 ttSS
T tall t short S smooth s wrinkled
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California Sea Lions 24 Male sea
lions can be twice the size of female sea lions.
Which best explains the difference in size
between male and female sea lions? A Orcas
and sharks prey on sea lions. B Male and
female sea lions hunt on land and at sea. C
Sea lions hold their breath while diving. D
Males compete with one another for females.
Mammals Hold breath while diving Can dive
as deep as 250 m Hunt on land and at sea
Preyed on by orcas and great white sharks
Establish large communities Males compete for
females Males can reach a mass of 300 kg
Females can reach a mass of 150 kg
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Punnett Square for Corn Height
25 Square 4 of this Punnett square represents
the genotype of the offspring if F ovule
T is fertilized by pollen grain T G ovule t
is fertilized by pollen grain T H ovule T is
fertilized by pollen grain t J ovule t is
fertilized by pollen grain t
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26 Which two kingdoms have members that
are photosynthetic? A Eubacteria and
Fungi B Protista and Animalia C Plantae
and Protista D Animalia and Fungi
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27 In this food web, how many
organisms are in kingdom Animalia? A 8 B
7 C 6 D 5
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28 A laboratory investigation included
examining prepared slides of pond water.
Single-celled organisms with a nucleus and either
cilia or flagella were visible. These organisms
probably belong to the kingdom F
Animalia G Fungi H Plantae J Protista
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29 Multicellular eukaryotes that are
usually mobile and obtain food from other
organisms probably belong to the kingdom A
Plantae B Fungi C Animalia D Protista
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30 Some zooplankton belong to the kingdom
Protista. Members of this kingdom are
characterized as A having segmented bodies
with jointed appendages B containing one or
more eukaryotic cells C laying eggs with a
leathery protective shell D having a
four-chambered heart
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31 The cell above most likely belongs
to an organism of the kingdom F
Animalia G Plantae H Fungi J
Eubacteria
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32 Which is a characteristic of members of
the plant kingdom that distinguishes them from
members of the animal kingdom? A Storage of
energy in chemical bonds B Exchange of H2O
with the environment C Use of mRNA during
protein production D Use of chlorophyll for
solar-energy transformation
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Characteristics of a Newly Discovered
Organism 33 Knowledge of which of these
is most important in classifying this new
organism into a kingdom? F The color of light
absorbed by the organism G The type of
radiation emitted H The use of
photosynthesis J The color of the organism
Absorbs blue light Emits infrared radiation
Contains RNA in nucleus Appears as a red
organism in full daylight Can obtain nutrition
through photosynthesis
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34 Which of these statements describes the
vertebrate circulatory system and its primary
function? A A web of structures that provide
support while protecting vital organs B
A series of ductless glands that secrete
hormones directly into the blood C A
network of tissues that carry nutrients and
oxygen through the body D A complex
of cytoplasmic cell membranes that transport
materials made by the cell
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35 Which structure in the upper arm
is responsible for raising the lower arm? A
1 B 2 C 3 D 4
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36 The medulla, part of the brain stem,
reacts quickly to increased levels of CO2
in the blood and stimulates a response from the
A excretory system B immune system C
respiratory system D integumentary system
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37 Which system is responsible for
producing enzymes that aid in breaking down
substances to be absorbed for the bodys growth
and repair? F Digestive system G
Reproductive system H Respiratory system J
Skeletal system
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38 Which of the following is directly
caused by muscle action? F Regeneration of
nerves G Healing of wounds H Release of
hormones J Extension of limbs
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39 Which system of the body would be
directly affected if a large number of T cells
were attacked by a virus? A Cardiovascular
system B Immune system C Endocrine
system D Respiratory system
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40 In the diagram above, one cell
creates and releases chemicals that travel to a
second cell and quickly induce that cell into
action. This diagram represents part of the
A endocrine system B skeletal
system C muscular system D nervous system
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41 Hemoglobin carries oxygen to body cells.
Which body system contains hemoglobin? A
Circulatory system B Respiratory system C
Endocrine system D Nervous system
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42 Pelicans prevent serious wing damage by
entering the water in the manner shown above.
Which two organ systems in the pelican work
together the most to accomplish this
maneuver? A Circulatory and nervous
systems B Nervous and muscular systems C
Muscular and digestive systems D Digestive and
circulatory systems
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Grade 10 Objective 2 Answer Key
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