have no effect on the rate of the chemical reaction

slow the rate of the chemical reaction

keep the rate of the chemical reaction the same

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

Enzyme decrease the activation energy of the reaction.

Enzymes increase the energy of the reactants.

Enzymes decrease the energy level of the products.

Enzymes reverse the direction of the reaction.

Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity increases as pH increases 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 .

What happens when enzymes are heated to a high temperature?

The shapes of the enzyme are altered denature

The enzymes' amino acid sequence changes.

Cells can produce over one thousand different enzymes at a time. Enzymes are critical to the metabolism of these cells, but why are so many different enzymes needed?

The active site of an enzyme can only bind to a specific substrate.

Cells are completely unable to control what enzymes they produce

The variety of enzymes prevents their actions from being inhibited.

The products of a reaction are always converted into new enzymes.

Why does enzyme activity decrease when it is in solution that has either a too high or too low pH?

The shape of the active site changes

All enzymes only work in neutral solutions

Enzyme activity remains unchanged in different pH's

The shape of the substrate changes

What happens when an enzyme changes shape?

The enzyme has to change back its shape to work

This is the most important factor about an enzyme that determines what job it will do in the body.

The sugars that make up the enzyme

The nucleic acids that make up the protein

The fatty acids that make up the protein

What is the function of nucleic acids?

build skin, hair, nails, muscles

Biology Unit 2 Review

Quiz

•

Biology

•

10th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS1-5, HS-LS1-5, MS-LS1-1

+6

Standards-aligned

Alexis Jackson

Used 44+ times

FREE Resource

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What structures distinguish a plant cell from an animal cell?

Plant cells have cell walls and ribosomes.

Plant cells have cell walls and chloroplasts.

Plant cells have chloroplasts and ribosomes.

Plant cells have chloroplasts and mitochondria.

Which statement is a part of the cell theory?

all cells come from preexisting cells

bacteria are prokaryotic cells

eukaryotic cells are complex

humans are multicellular

The Cell Theory states...

atoms create all matter

living things evolve

the cell is the backbone of all matter

cells are the basic unit of structure and organization of organisms

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is NOT a cell theory.

All non-living things are made of cells

All cells come from pre-existing cells

Cells are the basic unit of structure and function of all living things

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Has membrane bound organelles

Prokaryote

Eukaryote

both

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which has ribosomes?

Prokaryote

Eukaryote

both

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bacteria

Prokaryote

Eukaryote

both

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30 questions

What structures distinguish a plant cell from an animal cell?

Which statement is a part of the cell theory?

The Cell Theory states...

Which of the following is NOT a cell theory.

Has membrane bound organelles

Which has ribosomes?

Bacteria

Which type of cell?

A single-celled organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane -bound organelle .

What type of cell has a nucleus?

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