How do viruses typically spread from one host to another?

By direct contact, airborne particles, or bodily fluids

What is the role of enzymes in the process of digestion?

They break down large molecules into smaller ones

They slow down chemical reactions

Which of the following best represents the conservation of matter during cellular respiration?

Matter is rearranged into new molecules

Which of the following statements is true about eukaryotic cells?

They lack membrane-bound organelles.

Which of the following best describes the function of enzymes in a chemical reaction?

They decrease the activation energy required

They increase the activation energy required

They are used up in the reaction

They prevent the reaction from occurring

Given a diagram of a prokaryotic and a eukaryotic cell, how would you distinguish between them?

By the presence of a nucleus in the eukaryotic cell

A student is sick with the flu. Which statement best explains how the virus caused the disease?

The virus entered cells and used their machinery to reproduce, damaging the cells

The virus produced toxins in the body

The virus performed photosynthesis in the body

The virus increased the number of red blood cells

Why is it important for enzymes to be specific to the substrates they bind?

To ensure that only certain reactions occur in the cell

To allow all reactions to occur at once

To prevent the cell from using energy

If a plant is placed in the dark, how will this affect the process of photosynthesis?

Photosynthesis will decrease or stop

Photosynthesis will not be affected

The plant will produce more oxygen

Compare the complexity of prokaryotic and eukaryotic cells.

Eukaryotic cells are more complex because they have membrane-bound organelles.

Prokaryotic cells are more complex due to organelles.

Which of the following best explains why viruses are not considered living organisms?

They require a host cell to reproduce

They can reproduce on their own

How does temperature affect enzyme activity in a cell?

Enzyme activity increases to a point, then decreases if the temperature is too high

Enzyme activity always increases with temperature

Enzyme activity decreases as temperature increases

Temperature has no effect on enzyme activity

During cellular respiration, what happens to the glucose molecule?

It is broken down to release energy

A new microorganism is discovered. It has a nucleus and mitochondria. Is it prokaryotic or eukaryotic? Explain your reasoning.

Eukaryotic, because it has a nucleus and mitochondria

Prokaryotic, because it is small

Prokaryotic, because it has mitochondria

Eukaryotic, because it lacks a cell wall

A virus mutates and becomes able to infect a new species. What is the most likely reason for the spread of the disease in the new host population?

The virus can now use the host's cellular machinery to reproduce

The host is immune to the virus

The virus cannot enter the host cells

The virus is destroyed by the host's enzymes

A student designs an experiment to test the effect of pH on enzyme activity. What should the student measure to determine the enzyme's effectiveness?

The amount of product formed over time

The temperature of the solution

A model shows the inputs and outputs of photosynthesis and cellular respiration. Which statement best explains how energy is transferred between these processes?

Energy from sunlight is stored in glucose during photosynthesis and released as ATP during respiration

Energy is created during photosynthesis and destroyed during respiration

Energy is only used in respiration

Energy is not involved in either process

Unit 1 & 2 Review

Quiz

•

Science

•

9th Grade

•

Practice Problem

•

Easy

•

NGSS

MS-LS1-7, MS-LS1-2, MS-LS1-6

+6

Standards-aligned

Gabriela Moore

Used 3+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which organelle is responsible for controlling what enters and leaves the cell?

Nucleus

Cell membrane

Mitochondria

Ribosome

What is the basic structural difference between prokaryotic and eukaryotic cells?

Prokaryotic cells have a nucleus; eukaryotic cells do not.

Eukaryotic cells have a nucleus; prokaryotic cells do not.

Both have nuclei.

Neither have nuclei.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes a virus?

A living cell with a nucleus

A nonliving particle that requires a host to reproduce

A type of bacteria

A plant cell

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main function of enzymes in cellular processes?

To store genetic information

To speed up chemical reactions

To provide structural support

To transport oxygen

Which of the following is the correct chemical equation for photosynthesis?

Which process allows water molecules to move across a cell membrane from an area of high concentration to low concentration?

Active transport

Osmosis

Endocytosis

Exocytosis

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is found in both prokaryotic and eukaryotic cells?

Nucleus

Mitochondria

Cell membrane

Chloroplast

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