Free HESI A2 Biology Practice Test

Question 1 of 10

Which of the following correctly lists the hierarchic system of classification from most inclusive to least inclusive?

Kingdom, Phylum, Order, Family, Class, Genus, Species
Kingdom, Phylum, Order, Class, Family, Genus, Species
Kingdom, Phylum, Class, Order, Family, Genus, Species
Kingdom, Phylum, Class, Family, Order, Genus, Species

Question 2 of 10

Which of the following best describes why polarity is the most important characteristic of water?

The benefits of polarity are hydrogen bonding, a low specific heat value, strong cohesive and adhesive properties, and its versatility as a solvent.
The benefits of polarity are covalent bonding, a high specific heat value, strong cohesive and adhesive properties, and its versatility as a solvent.
The benefits of polarity are hydrogen bonding, a high specific heat value, weak cohesive and adhesive properties, and its versatility as a solvent.
The benefits of polarity are hydrogen bonding, a high specific heat value, strong cohesive and adhesive properties, and its versatility as a solvent.

Question 3 of 10

Which of the following correctly identifies the difference between saturated and unsaturated fats?

Saturated fats contain one or more double bonds in their hydrocarbon tail, while unsaturated fats contain no double bonds.
Unsaturated fats contain one or more double bonds in their hydrocarbon tail, while saturated fats contain no double bonds.
There is no difference between saturated and unsaturated fats.
Saturated fats contain two or more double bonds in their hydrocarbon tail, while unsaturated fats contain only one double bond.

Question 4 of 10

All metabolic reactions in a cell are catalyzed by which of the following?

Amino acids
Phospholipids
Steroids
Enzymes

Question 5 of 10

Which organelle is responsible for storing, modifying and sending out products of the endoplasmic reticulum, such as proteins?

Golgi apparatus
Lysosomes
Ribosomes
Endoplasmic reticulum

Question 6 of 10

Which step in cellular respiration takes place in the mitochondria of the cell and produces two ATP molecules, six carbon dioxide molecules, and six NADH molecules for every molecule of glucose?

Glycolysis
The Krebs cycle
Electron transport chain
The Calvin cycle

Question 7 of 10

What is the role of water in photosynthesis?

Absorb light energy
Supply electrons in the light reactions
Convert solar energy to chemical energy
Provide sugars to be used in the Calvin cycle

Question 8 of 10

During which phase of cell reproduction are the chromosomes duplicated, and the cell prepares for division?

Interphase
Telophase
Metaphase
Cytokinesis

Question 9 of 10

The color purple (P) is dominant in a plant. If you have a purple plant with an unknown genotype and cross it with a white plant (pp) and get offspring which are 100% purple, what is the genotype of the unknown plant?

PP
Pp
pp
Uncertain

Question 10 of 10

Which are the correct mRNA bases, complementary to the following DNA strand “ TGCA”:

ACGT
ACGU
TGCA
TUGT

Free HESI A2 Biology Practice Test

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