Quiz about Biology EOC Sec 1 Practice Test

Question 1

Fruit flies have 3 chromosomes plus sex

chromosomes (X and Y). Mutations occurred

within four different cells of an individual female

fruit fly as shown in the table below. Which of these mutations could be passed on to

this fruit fly's offspring?

Accepted Answer

curly wings

Answer

absent eyes

Answer

yellow body

Answer

leg-shaped antennae

Question 2

The diagram below represents a cross between two

pea plants. In pea plants, the allele for round seeds (R) is

dominant to the allele for oval seeds (r). In a cross

between the two plants above, what percentage of

the offspring will have round seeds?

Accepted Answer

75%

Answer

100%

Answer

50%

Answer

25%

Question 3

Which of the following best describes the

inheritance of a sex-linked trait?

Accepted Answer

an allele carried on an X chromosome that

can affect males or females

Answer

a recessive allele carried by females that

affects only males

Answer

a dominant allele carried by females that

affects only males

Answer

an allele carried on the Y chromosome that

can affect both males and females

Question 4

If a corn plant has a genotype of Ttyy, what are

the possible genetic combinations that could be

present in a single grain of pollen from this plant?

Accepted Answer

Ty, ty

Answer

TY, ty

Answer

TY, Ty, ty

Answer

Ty, ty, tY, TY

Question 5

In certain breeds of dogs, deafness is due to

a recessive allele (d) of a particular gene, and

normal hearing is due to its dominant allele (D).

What percentage of the o spring of a normal

heterozygous (Dd) dog and a deaf dog (dd) would

be expected to have normal hearing?

Accepted Answer

50%

Answer

0%

Answer

25%

Answer

100%

Question 6

Which sequence of DNA bases would pair with

the ones shown in the partial strand below?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 7

The diagram below shows Rosalind Franklin's

x-ray diffraction image of DNA. How did this evidence affect the work of Watson

and Crick?

Accepted Answer

It was used to determine the physical structure

of DNA.

Answer

It was used to identify the four bases that

make up DNA.

Answer

It was used to develop the theory of

independent assortment.

Answer

It was used to show that DNA was the

molecule of inheritance.

Question 8

5' ATCAGCGCTGGC 3'

The above sequence of DNA is part of a gene.

How many amino acids are coded for by this

segment?

Accepted Answer

4

Answer

8

Answer

12

Answer

20

Question 9

What is a primary role of decomposers in an

ecosystem?

Accepted Answer

They cycle matter by returning carbon and

other matter to the ecosystem.

Answer

They eliminate matter by taking nitrogen from

the ecosystem.

Answer

They eliminate matter by taking phosphorus

from the ecosystem.

Answer

They cycle matter by returning oxygen and

other matter to the ecosystem.

Question 10

Which diagram correctly models the movement of heat, energy, and matter in an ecosystem?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 11

The graph below shows the population of mice

living in a certain area over a fifteen-year period. Which numeral on the graph points to a time when

the birth rate exceeded the death rate of the mice?

Accepted Answer

I

Answer

II

Answer

III

Answer

IV

Question 12

The graph below shows a population of pigeons

living in a neighborhood over a ten-year period. Which of the following statements could account

for the change in population seen between years 7

and 8?

Accepted Answer

The death rate of the pigeons exceeded the

birth rate.

Answer

The birth rate of the pigeons increased.

Answer

The emigration rate of the pigeons decreased.

Answer

The neighborhood reached its carrying

capacity for the pigeon population.

Question 13

A group of students is building a model of an

ecosystem. Which of the following organisms

should the students select to act as a decomposer?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 14

After a volcanic eruption has covered an area with

lava, which of the following is the most likely

order of succession in the repopulation of the

area?

Accepted Answer

lichens -> grasses -> shrubs -> trees

Answer

mosses -> grasses -> lichens -> trees

Answer

grasses -> trees -> mosses -> lichens

Answer

shrubs -> grasses -> trees -> lichens

Question 15

When the Mount St. Helens volcano erupted, the

blast covered much of the surrounding area with

ash. Based on the diagram above, which list

shows the sequence of secondary succession that

followed that eruption?

Accepted Answer

Z, X, Y, W

Answer

X, Y, Z, W

Answer

W, Y, X, Z

Answer

Z, Y, W, X

Question 16

A wetland was drained to build a mall. Two years

later, there were no more toads in that area. Why

did the toads disappear?

Accepted Answer

The toads got their food from the wetland

ecosystem.

Answer

The toads were destroyed by the construction

equipment.

Answer

The toads died because toads cannot breathe

out of water.

Answer

The toads were frightened and went into the

woods.

Question 17

How does too much fishing in an area affect its

ecosystem?

Accepted Answer

Organisms that eat the fish could become

endangered due to starvation.

Answer

The fish will lay many more eggs to replace

the fish that were caught.

Answer

Organisms that the fish eat will become

endangered.

Answer

People could eat too many fish and become

ill.

Question 18

The graph above shows how a white-tailed deer population recovered over a ten-year period after a population crash. Wolves in the same area feed primarily on deer. Which graph shows the most likely change in wolf population for the same ten-year period?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 19

The genome of a gold sh contains

96 chromosomes. How many chromosomes will

each daughter cell have after mitosis of a gold sh

cell is complete?

Accepted Answer

96

Answer

24

Answer

48

Answer

192

Question 20

The distribution of chromosomes in one type of

cell division is shown in the diagram below. Which process and type of resulting cells are

represented in the diagram?

Accepted Answer

meiosis, which produces gametes

Answer

mitosis, which produces gametes

Answer

mitosis, which produces body cells

Answer

meiosis, which produces body cells

Question 21

Which statement about plant and animal cells is

true?

Accepted Answer

Both use mitochondria to produce energy.

Answer

Both have a cell wall to give them support.

Answer

Both have a large vacuole to store water

Answer

Both use chloroplasts to store energy.

Question 22

There are many different enzymes located in the

cytoplasm of a single cell. How is a specific

enzyme able to catalyze a specific reaction?

Accepted Answer

An enzyme binds to a specific substrate

(reactant) for the reaction catalyzed.

Answer

Different enzymes are synthesized in specific

areas of the cytoplasm.

Answer

Most enzymes can catalyze many different

reactions.

Answer

Enzymes are transported to specific substrates

(reactants) by ribosomes.

Question 23

Proteins are large macromolecules composed of

thousands of subunits. The structure of the protein

depends on the sequence of

Accepted Answer

amino acids.

Answer

lipids.

Answer

monosaccharides.

Answer

nucleosides.

Question 24

Use the pictures below to answer the question. Which shows the correct order from simplest to

most complex?

Accepted Answer

Cell -> Tissue -> Organ

Answer

Organ -> Tissue -> Cell

Answer

Cell -> Organ -> Tissue

Answer

Tissue -> Organ -> Cell

Question 25

The diagram below represents a fat molecule. A fat molecule belongs to which category of

organic molecules?

Accepted Answer

lipids

Answer

proteins

Answer

nucleic acids

Answer

carbohydrates

Question 26

Cellular respiration involves a series of chemical

reactions. Which of the following is a primary

way that enzymes affect these reactions?

Accepted Answer

They increase the rate of the reactions.

Answer

They decrease the pH of the products.

Answer

They take the place of oxygen as a reactant.

Answer

They change the location of the reactions in

the cell.

Question 27

Which bird foot is best for swimming?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 28

The illustration below shows the morphological

change of two species. Which statement explains why species 1 and species 2 are different?

Accepted Answer

Natural selection can cause gradual speciation

changes.

Answer

An individual changed itself to suit the

environment.

Answer

Interbreeding of species 2 results in no

genetic mutations.

Answer

Extinction of ancestor species occurs as a

result of interbreeding.

Question 29

A termite population was sprayed with a certain

brand of insecticide. After being sprayed, the

number of surviving termites within the population

were counted and recorded as a percentage of the

total. This process was repeated until a total of

six generations of termites had been sprayed. The

results are shown in the table below. Which statement best explains why later generations had higher percentages of termites that

survived?

Accepted Answer

Later generations were the o spring of

termites that were more resistant to the

spraying.

Answer

Earlier generations had several members that

were old and weak.

Answer

Earlier generations had smaller numbers of

termites than later generations.

Answer

Later generations were able to live through

the spraying because they were used to it.

Question 30

How is natural selection in the evolution of long

necks in giraffes best explained?

Accepted Answer

Giraffes with longer necks survived because

they were better suited to the environment.

Answer

Shorter-necked giraffes were killed by

long-necked giraffes.

Answer

Giraffe necks grew longer because of the bone

structure of the animals.

Answer

Long-necked giraffes mated only with other

long-necked giraffes.

Question 31

The arctic fox and gray wolf are two examples of

animals that change the color of their fur with

the seasons. In the summer, the animals are a

brownish color, and in the winter, they turn white.

The change of color helps the animals to survive.

Which of the following provides the best

explanation for this change?

Accepted Answer

The color change helps protect them from

predators.

Answer

The color change helps them raise their

young.

Answer

The color change helps them regulate their

body temperature better.

Answer

The color change helps them be seen from a

great distance.

Question 32

Study the table below. A student records observed characteristics for four organisms. Based on this student's observations, which organism has two characteristics of all living things?

Accepted Answer

organism X

Answer

organism W

Answer

organism Y

Answer

organism Z

Question 33

The following table lists characteristics of five

different types of animals. Use the information in

the table to answer the following question(s). An animal has 20 body segments and has no mandibles. Which type of animal is it?

Accepted Answer

Type V

Answer

Type II

Answer

Type III

Answer

Type IV

Question 34

According to the classification key, what

characteristic does a wolf have in common with a

caribou?

Accepted Answer

Backbone

Answer

Flat tails

Answer

Hooves

Answer

Teeth

Question 35

The table below shows the classifications of four

animals. According to their classification, which of the

following animals are most closely related?

Accepted Answer

R and S

Answer

Q and R

Answer

S and T

Answer

Q and T

Question 36

Use this dichotomous key to answer the question. Trish constructed a dichotomous key to help identify the reptiles and amphibians living in a certain area. Which phrase describes a lizard?

Accepted Answer

an animal with scaly skin and legs but no

shell

Answer

an animal with scaly skin and a shell but no

external gills

Answer

an animal with legs and coastal grooves but

no tail

Answer

an animal with external gills and a tail but no

coastal grooves

Question 37

The table below provides information about

nutrition and cellular structure for organisms in

different kingdoms. What information best completes the table?

Accepted Answer

heterotrophic, yes, multicellular

Answer

autotrophic, no, unicellular

Answer

autotrophic, yes, multicellular

Answer

heterotrophic, no, unicellular

Biology EOC Sec 1 Practice Test

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