Enzymes are capable of increasing the rate of a chemical reaction within a living cell. Enzymes accomplish this through which of the following means?

reducing the number of products

increasing the temperature of the cell

increasing the concentration of reactants

Four groups of organic compounds found in living things are

carbohydrates, lipids, nucleic acids, and proteins

carbon, hydrogen, oxygen, and nitrogen

sunlight, chlorophyll, photosynthesis, and glucose

A lipid molecule is composed of

a glycerol molecule and 3 fatty acid chains

monosaccharides and disaccharides

nucleotides (phosphate, sugar, nitrogenous base)

What is buffering capacity in water and why is it important?

Ability to resist changes in pH; important for maintaining stable pH levels

Ability to increase changes in pH; important for maintaining unstable pH levels

Ability to resist changes in temperature; important for maintaining stable temperature levels

Inability to resist changes in pH; important for maintaining stable pH levels

Discuss the impact of pH on biological processes.

pH can affect the structure and function of enzymes, proteins, and other biomolecules, impacting biological processes such as metabolism, cell signaling, and gene expression.

Biological processes are not influenced by pH

pH has no impact on biological processes

pH only affects non-essential biological functions

A protein that speeds up chemical reactions

A protein that breaks apart molecules

A protein needed for cell structure

A neurological protein involved in cell signaling

What is activation energy

The energy required to activate an enzyme

The energy released after chemical reactions

Energy absorbed by chemical reactions

An enzyme speeds up a reaction by

lowering the activation energy.

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.

What happens when enzymes are heated to a high temperature?

The shapes of the enzyme are altered or denatured

The enzymes' amino acid sequence changes.

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 .

Macromolecules ,pH, Properties of Water - Biology

10th Grade

•

77 Qs

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Macromolecules ,pH, Properties of Water - Biology

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Science, Biology

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10th Grade

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Practice Problem

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Medium

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NGSS

HS-LS1-6, HS-PS1-5, HS-PS1-4

+14

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Katie Villier

Used 21+ times

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77 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Proteins are made of monomers called ___________

Nucleotides

Monosaccharides

Amino Acids

Glycerol and fatty acids

Tags

NGSS.HS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which macromolecule is shown?

lipid

protein

nucleic acid

carbohydrate

Tags

NGSS.HS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

Carbohydrates are made of...

C H O

C H O N

C H O N P

C H O N S

Tags

NGSS.HS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

Lipids are made primarily of...

C H O

C H O N

C H O N P

C H O N S

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

Each amino acid in a protein is made of...

C H O

C H O N

C H O N P

C H O N S

Tags

NGSS.HS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This is one job proteins do NOT have in the body

insulation

structure for tissues and organs

speed up chemical reactions

transport things through cell membrane

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which macromolecule stores energy, insulates us, and makes up the cell membrane?

lipids

proteins

carbohydrates

nucleic acids

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