HESI A2 BIOLOGY PRACTICE TEST EXAM QUESTIONS

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HESI A2 BIOLOGY PRACTICE TEST EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -25 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: with which genotype would the recessive phenotype appear, if the dominant allele is marked with "A" and the recessive allele is marked with "a"?

• AA
• Aa
• aa
• aA

Answer:

• aa

Question 2: which of the following is identical in both mitosis and meiosis?

• the number of divisions
• the number of daughter cells produced
• the synapsis of homologous chromosomes
• when DNA replication occurs

Answer:

• when DNA replication occurs
• occurs in interphase in both mitosis and meiosis

Question 3: What is the important functions of the roots in plants?

• absorbing water from the surrounding environment
• performing photosynthesis
• conducting sugars downward through the leaves
• supporting the plant body

Answer:

• absorbing water from the surrounding environment

Question 4: which subdiscipline of biology would a botanists study?

• growth of an aloe plant
• evolution of monkeys
• genetic changes in human brain cancer
• interaction between worker bees and queen bee

Answer:

• growth of an aloe plant

-A botanist is a scientist who specializes in plant biology

Question 5: what shape does a water molecule form?

• C- shape
• S-shape
• V-shape
• T-shape

Answer:

• V-shape

-water molecules form a V- shape because of the uneven sharing of electrons between the atom

Question 6: Which is a product of photosynthesis?

• CO2
• H20
• O2
• solar energy

Answer:

• O2

Question 7: What type of biological molecule is DNA helicase?

• an enzyme
• a protein
• nucleic acid
• nucleotides

Answer:

• an enzyme

Question 8: a color-blind male and a carrier female have three children. What is the probability that they are all colorblind?

• 1/4
• 1/8
• 1/16
• 1/32

Answer:

• 1/8

-multiply 1/2 three times (1/2 coming from the parents and three coming from each child) which equals 1/8

Question 9: The process of breaking down large molecules into smaller molecules to provide energy is know as which of the following?

• metabolism
• bioenergetics
• anabolism
• catabolism

Answer:

• catabolism

Question 10: what type of molecules can move through a cell membrane by passive transport?

• complex sugars
• non-lipid soluble molecules
• oxygen
• molecules moving from areas of low concentration to areas of high concentrations

Answer:

• oxygen

Question 11: what information does a genotype give that a phenotype does not?

• the genotype necessarily includes the proteins coded for by its alleles
• the genotype will always show an organisms recessive traits
• the genotype must include the organism's physical characteristics
• the genotype shows what an organism's parents looked like

Answer:

• the genotype will always show an organisms recessive traits
• genotype shows recessive and dominant alleles; phenotype shows only dominant