EOCT Quiz #535 Questions

Created by:

Brandy McClain

After a culture of cells is allowed to multiply and is viewed through a microscope, the cells are x-rayed. After the radiation, many newly reproduced cells appear different. What has probably occurred?

a. Contamination

b. Mutation

c. Bacterial infection

d. Speciation

#1.

The process of photosynthesis releases this gas into the atmosphere:

a. Oxygen

b. Carbon dioxide

c. Methane

d. Carbon monoxide

#2.

In squash plants, yellow fruit (Y) is dominant to white fruit (y). If two plants heterozygous for yellow fruit are crossed, what are the possible

genotypes of the offspring?

a. Yy only

b. YY and yy

c. Yy and yy

d. YY, Yy, and yy

#3.

In snapdragons, the combined expression of both alleles for flower color produces a new phenotype that is pink. This

illustrates incomplete dominance. The Punnett square below shows that both the white and red snapdragons are homozygous. Which of the following would be the correct

product from a cross between two heterozygous pink snapdragons?

a. 2 red, 2 white

b. 2 red, 1 pink, 1 white

c. 1 red, 2 pink, 1 white

d. 1 red, 1 pink, 2 white

#4.

Meiosis is the process by which gametes are produced. In which of the following human

organs does meiosis occur?

a. Skin

b. Testis

c. Liver

d. Brain

#5.

What is the function of enzymes in biological systems?

a. Enzymes act as substrates when the necessary proteins are unavailable.

b. Enzymes act as products to create new chemical reactions.

c. Enzymes act as catalysts to drive chemical reactions forward.

d. Enzymes bond with substrates to create the new reaction products.

#6.

A mushroom and a humpback whaleare alike because both are:

a. Motile

b. Prokaryotic

c. Unicellular

d. Heterotrophic

#7.

Which of these could not be a virus?

BA

C D

#8.

Which of the following macromolecules are a prominent part of animal tissues

that function in insulation, helping animals conserve heat?

a. Carbohydrates

b. Lipids

c. Proteins

d. Nucleic acids

#9.

Cells from which of the following organisms would be expected to

contain cell walls?

a. Sponge

b. Cricket

c. Water lily

d. Paramecium

#10.

What characteristic do all living things share?a. They contain DNA

b. They are made up of many parts

c. They reproduce by mitosis

d. They need oxygen to survive

#11.

The picture models a cellular metabolic process. The main purpose of this

process is to produce —

a. ADP

b. H2O

c. Phosphate group

d. Usable energy

#12.

Lichens are a combination of fungi and algae. They begin primary succession to break down

rocks into soil. They are an example of a:

a. Parasite

b. Pioneer Species

c. Abiotic Factor

d. Biome

#13.

The in the pedigree chard below represents what?

a. a male who is albino

b. a female who is albino

c. a male who carries albinism

d. a female who carries albinism

#14.

In the human body, muscle cells have an increased need for energy during exercise. To help supply

this energy, the body will immediately increase —

a. Food intake to increase the substances

available for respiration

b. The need for waste products to

be retained

c. Activity in the nervous system to

stimulate intake of carbon dioxide

d. The breathing rate to supply more

oxygen to cells for the release of energy

#15.

In the diagram, which organism provides nutrients for the largest number of other organisms?

a. Herring

b. Snapper

c. Bluefish

d. Seal

#16.

According to the diagram, which of the following is the top predator?

a. Diatoms

b. Seal

c. Herring

d. Orca

#17.

Which phase of mitosis would be seen next?

a. b.

c. d.

#18.

External sources, such as radiation or chemicals, can cause mutations in genes or

entire chromosomes. For a mutation to pass on to offspring, it must occur in a —

a. Sex cell

b. Brain cell

c. Muscle cell

d. Bone cell

#19.

What is the total magnification used to view these onion cells through this

microscope setup?

a. 10 x

b. 20 x

c. 40 x

d. 400 x

#20.

10 X 40 = ?

Escherichia coli is the scientific name of a bacterium. What category of classification is Escherichia?

a. Genus

b. Species

c. Kingdom

d. Family

#21.

Algae and multicellular plants are autotrophs because they —

a. Decompose dead organisms

b. Absorb nutrients from soil

c. Break down starches to glucose

d. Capture sunlight to produce sugars

#22.

Each drawing represents different stages in community succession within the state of Virginia.

Which of the following drawings represents the climax community in this succession pattern?

a. b.

c. d.

#23.

The organisms in a typical backyard are likely to include bacteria, grass, shrubs, trees, insects,

spiders, birds, and small mammals. Together, all these organisms make up a—

a. kingdom

b. population

c. biome

d. community

#24.

A biologist has just discovered a new life form. The newly described organism is multicellular, does not

carry on photosynthesis, and absorbs nutrients from the environment. It is composed of eukaryotic cells with cell

walls made of chitin. In which kingdom would theorganism be classified?

• kingdom

• population

• biome

• communitya. Fungi

b. Bacteria

c. Plant

d. Animal

#25.

Amino acids link together by peptide bonds to form proteins. In which cellular

organelle would this process occur?

a. Lysosome

b. Ribosome

c. Endoplasmic reticulum

d. Golgi Body

#26.

Which of these is most responsible for carrying coded information from

the nucleus?

a. DNA

b. Ribosomes

c. ATP

d. mRNA

#27.

The above information was collected in the field while studying the effect of pH on the growth of the duckweed

plant. The data shows that duckweedhas optimum growth at a pH of —

a. 4

b. 6

c. 8

d. 12

#28.

Which of these will complete the mRNA strand matched to DNA?

a. AUG

b. CAG

c. GUC

d. UAC

#29.

This key can be used to distinguish four species of

frogs found in ponds in eastern Virginia. To which species does

the frog shown belong?

a. Rana sphenocephala

b. Rana clamitans

c. Rana catesbeiana

d. Rana virgatipes

#30.

Which of these segments could be used to correctly complete the DNA molecule in the diagram above?

a. F

b. G

c. H

d. J

#31.

This graph suggests that from 1840 to 1920, the carrying capacity for sheep in Tasmania

was approximately —

a. 0.75 million

b. 1.00 million

c. 1.75 million

d. 2.25 million

#32.

A student was studying the responses of cells to solutions of varying salt concentrations. Which solution below would

be considered the most hypertonic?

a. F

b. H

c. G

d. J

#33.

The picture shows a segment of DNA from a cat. Which of these is most likely

the kitten of this cat?

a. 1

b. 2

c. 3

d. 4

#34.

Which characteristic do viruses possess in common

with living cells?

a. They contain nucleic acids such as DNA or RNA

b. They contain a nucleus and organelles.

c. They make their own food. d. They are inactive outside the body of living cells.

#35.

THE END