Search Header Logo
Biology Keystone Review

Biology Keystone Review

Assessment

Flashcard

Biology

9th - 10th Grade

Practice Problem

Hard

Created by

REBECCA DAY

FREE Resource

Student preview

quiz-placeholder

50 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What action must occur for an enzyme to catalyze a chemical reaction?

Back

A substrate must bind to an active site of the enzyme.

2.

FLASHCARD QUESTION

Front

Which characteristic is shared by both prokaryotes and eukaryotes? Options: have organ systems, make their own food, contain genetic material, need oxygen gas to breathe

Back

contain genetic material

3.

FLASHCARD QUESTION

Front

Why is carbon able to form a large number of different molecules?

Back

carbon can form four covalent bonds

4.

FLASHCARD QUESTION

Front

Which statement correctly describes how a protein is formed?

Back

Amino acids are bonded together in a long chain to form a new molecule.

5.

FLASHCARD QUESTION

Front

Which biological molecules are most likely represented by molecules 1 and 2? Molecule #1: made mostly of carbon with two nonpolar chains & a polar head; main component of cell membrane Molecule #2: polar molecule made of repeating units of sugar bonded to a phosphate & a nitrogenous base; stores genetic information

Back

molecule 1: lipid molecule; molecule 2: nucleic acid

6.

FLASHCARD QUESTION

Front

Lipase is an enzyme that breaks down lipids in the digestive system of humans. It functions best at a pH range of 4.0 to 5.0. When a person takes an antacid tablet to relieve heartburn, the antacid increases the pH to around 7 in certain areas of the digestive system. Which initial effect would most likely be caused by a change in pH?

Back

fewer lipids would be digested

7.

FLASHCARD QUESTION

Front

Difference in energy acquisition between Organism 1 and Organism 2 based on cell structures: Organism 1: cell wall, endoplasmic reticulum, Golgi body, chloroplasts, mitochondria, nucleus, ribosomes, vacuole. Organism 2: cell membrane, endoplasmic reticulum, Golgi body, mitochondria, nucleus, ribosomes.

Back

Only organism 1 uses solar energy to make energy-rich compounds.

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?