HESI A2 BIOLOGY - QUESTIONS ANSWERS EXAM

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QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -100 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Function of anaphase?

Answer:

Chromosomes begin to separate, chromatids are not considered separate chromosomes

Question 2: Which base pair is substituted in RNA?

Answer:

Thymine

Question 3: What are nucleic acids?

Answer:

Components of the molecules of inheritance.

Question 4: What are most of the components of cells referred to as?

Answer:

Organelles

Question 5: What is a genotype?

Answer:

The combination of alleles Question 6: What does the oxidation of NADH molecules produce during respiration?

Answer:

Oxygen

Question 7: Two types of gene versions?

Answer:

Dominant and recessive

Question 8: Importance of steroids?

Answer:

Precursor to many significant hormones.

Question 9: Production of DNA begins with?

Answer:

Transcription

Question 10: Specific types of Lipids?

Answer:

Fatty Acids, Phospholipids, Steroids

Question 11: Where does Kreb's Cycle take place?

Answer:

Matrix of mitochondria

Question 12: Structure of phospholipids?

Answer:

Two fatty acids and a phosphate group.

Question 13: What allows for hydrogen bonding between molecules?

Answer:

Polar nature of water

Question 14: What is genetics?

Answer:

Study of heredity

Question 15: What is heterozygous?

Answer:

Alleles are different types

Question 16: High rate of protein synthesis equals high number of______?

Answer:

Ribosomes.

Question 17: Locations for Ribosomes?

Answer:

Endoplasmic Reticulum and Cytoplasm.

Question 18: Core theme of biology?

Answer:

Evolution

Question 19: Two types of ribosomes?

Answer:

Bound and Free

Question 20: Two different stages in photosynthesis?

Answer:

Light reactions and Calvin cycle.

Question 21: Function of ribosomes?

Answer:

Read the RNA produced in the nucleus and translate the genetic instructions to produce proteins.

Question 22: Function of prophase I?

Answer:

non-sister chromatids of homologous chromosomes cross, small sections of DNA are transferred leading to variation.

Question 23: How many ATP are produced from the ETC?

Answer:

28-32 ATP

Question 24: What do chromosomes contain?

Answer:

Material for regeneration of the cell and information for the function of the cell.

Question 25: Most important purposes of Carbs?

Answer:

Storage, Structure, Energy

Question 26: What is DNA?

Answer:

Contains code that is necessary for replication.

Question 27: How does the cell produce ATP in photosynthesis?

Answer:

Absorption of light and then using that energy to split water molecules, transfer electron, create NADPH and produce ATP.

Question 28: 4 types of nitrogenous bases?

Answer:

Adenosine, Thymine, Guanine, Cytosine