Quiz about Missouri Biology EOC

Question 1

The initial steps in gene expression are modeled. Double-stranded DNA first unwinds into two strands. Which process and product are represented in the diagrams?

Accepted Answer

Process: transcription; product: mRNA

Answer

Process: translation; product: protein

Answer

Process: replication; product: tRNA

Answer

Process: recombination; product: polymerase

Question 2

The diagram represents one way an enzyme can be inhibited. Which statement explains the effect of an inhibitor on an enzyme?

Accepted Answer

A substrate will be unable to attach to the enzyme.

Answer

A substrate will be able to bond with the enzyme.

Answer

The enzyme will likely be attacked by immune cells

Answer

The enzyme will be unable to produce more enzymes.

Question 3

Viruses are considered nonliving because they need a host to reproduce.

Accepted Answer

True

Answer

False

Question 4

Which of the following best describes the flow of genetic information in a cell?

Accepted Answer

DNA to RNA to Protein

Answer

RNA to DNA to Protein

Answer

Protein to RNA to DNA

Answer

DNA to Protein to RNA

Question 5

In genetics, what is the term used for the physical appearance of an organism's trait?

Accepted Answer

Phenotype

Answer

Genotype

Answer

Allele

Answer

Homozygous

Question 6

What is the term for a change in the DNA sequence?

Accepted Answer

Mutation

Answer

Meiosis

Answer

Mitosis

Answer

Recombination

Question 7

What is the term used to describe the movement of alleles between populations?

Accepted Answer

Gene flow

Answer

Genetic drift

Answer

Natural selection

Answer

Mutation

Question 8

A cell _______ in a hypertonic solution because water moves _______ the cell.

Accepted Answer

shrinks; out

Answer

shrinks; in

Answer

swells; out

Answer

swells; in

Question 9

Which of the following follows the concentration gradient (high to low) but requires a transport protein?

Accepted Answer

facilitated diffusion

Answer

diffusion

Answer

osmosis

Answer

active transport

Question 10

The four butterflies in the illustration represent the offspring in the F₁ generation. Which statement is best supported by the phenotypes of these offspring?

Accepted Answer

The F₁ generation is the result of a dihybrid cross.

Answer

The F₁ generation is composed only of males.

Answer

Two of the offspring in the F₁ generation will not be able to reproduce.

Answer

Two of the offspring in the F₁ generation will experience a spontaneous mutation

Question 11

Name the process in the picture.

Accepted Answer

replication

Answer

transcription

Answer

mitosis

Answer

translation

Question 12

Name M.

Accepted Answer

Calvin cycle

Answer

light dependent cycle

Answer

Carbon dioxide

Answer

glucose

Question 13

Name B.

Accepted Answer

nitrogen base

Answer

phosophate

Answer

glucose

Answer

deoxyribose

Question 14

An analysis of DNA and RNA sequences can be used to classify organisms. A dendrogram, such as the one shown, is based on molecular data. It can be used to represent evolutionary relationships within a group of organisms that are hypothesized to have descended from a common ancestor. Which statement is best supported by the information in this dendrogram?

Accepted Answer

Lesser pandas are more genetically similar to raccoons than they are to giant pandas.

Answer

Lesser pandas are more genetically similar to giant pandas than they are to raccoons.

Answer

Brown bears are more genetically similar to giant pandas than they are to sun bears.

Answer

The bear species are all more genetically similar to dogs than they are to giant pandas.

Question 15

Some students used vinegar to dissolve a way the shells of three eggs and used these eggs as models of human red blood cells. The students observed the changes in the eggs when they were placed in different solutions. Which statement best describes the role of the cell membrane in this model?

Accepted Answer

The cell membrane allows water to enter and leave the cell.

Answer

The cell membrane is an impermeable barrier that prevents water from entering the cell.

Answer

The cell membrane allows solutions to enter the cell, which causes the cell to shrink.

Answer

The cell membrane removes solutes from the environment.

Question 16

the section of dna has these bases:

TAG CAG TAC

which mRNA sequence is produced from this DNA section

Accepted Answer

AUC GUC AUG

Answer

ATC GTC ATG

Answer

AUG CUG AUC

Answer

UTC GTC UTG

Question 17

Passive transport requires ATP while active does not.

Accepted Answer

False

Answer

True

Question 18

Food webs such as the one shown were first used in 1927 by the animal ecologist Charles Elton. The food web below represents the feeding relationships among organisms in an Alaskan ecosystem. An environmental change that removed which of these organisms from the ecosystem would cause the most instability in the ecosystem?

Accepted Answer

Zooplankton

Answer

Auklets

Answer

Foxes

Answer

Salmon

Question 19

What is the genotypic ratio of the offspring?

Accepted Answer

1:2:1

Answer

3:1

Answer

1:3

Answer

2:2

Question 20

What are the phenotype percentages of the offspring?

Accepted Answer

75 % Brown fur and 25% White fur

Answer

50 % Brown fur and 50% White fur

Answer

25 % Brown fur and 75% White fur

Answer

0% Brown fur and 100% White fur

Question 21

Which of the following processes is primarily responsible for the production of ATP in the mitochondria?

Accepted Answer

C) Electron Transport Chain

Answer

A) Glycolysis

Answer

B) Krebs Cycle

Answer

D) Fermentation

Question 22

In an experiment, a student wants to test the effect of light on plant growth. What is the independent variable in this experiment?

Accepted Answer

C) Amount of light

Answer

A) Amount of water

Answer

B) Type of plant

Answer

D) Growth of the plant

Question 23

Which of the following best explains why a species might become extinct?

Accepted Answer

C) Inability to adapt to environmental changes

Answer

A) High genetic diversity

Answer

B) Stable environment

Answer

D) Abundance of food resources

Question 24

What is the primary function of ribosomes in a cell?

Accepted Answer

B) Protein synthesis

Answer

A) Energy production

Answer

C) DNA replication

Answer

D) Lipid storage

Question 25

A scientist observes that a certain trait in a population of rabbits is becoming more common over generations. Which process is most likely responsible for this change?

Accepted Answer

B) Natural selection

Answer

A) Genetic drift

Answer

C) Gene flow

Answer

D) Mutation

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