HESI A2 EXAM BIOLOGY 2024 QUESTIONS WITH CORRECT

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HESI A2 EXAM BIOLOGY 2024 QUESTIONS WITH CORRECT

ANSWERS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

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

Question 1: what is significant about saturated fat?

Answer:

no double bonds in their hydrocarbon tail

Question 2: what is converted during glycolysis?

Answer:

glucose to pyruvate

Question 3: what are two examples of vacuoles?

Answer:

food vacuole and central vacuole

Question 4: what is the second step of cellular respiration?

Answer:

citric acid cycle (Krebs cycle)

Question 5: what part of a phospholipid is charged and uncharged?

Answer:

phosphate head - charged hydrocarbon tail - uncharged

Question 6: how is a precusor to glucose formed?

Answer:

photosynthesis

Question 7: what is ATP used for?

Answer:

energy currency of the cell

Question 8: what is DNA important for?

Answer:

repair, replication, and instructions for the function of the cell

Question 9: what is the endoplasmic reticulum?

Answer:

a membranous organelle found attached to the nuclear membrane made up of the rough ER and smooth ER

Question 10: what is the role of the smooth ER?

Answer:

detoxification and metabolism of multiple molecules

Question 11: what are metabolic pathways?

Answer:

series of steps that a reaction takes place

Question 12: what systems of respiration occur within a mitochondrion?

Answer:

the citric acid cycle and electron transport chain

Question 13: what is the cellular membrane?

Answer:

barrier that protects the cell

Question 14: what is contained within lysosomes?

Answer:

hydrolytic enzymes

Question 15: what are ribosomes?

Answer:

organelles that read mRNA and translate the genetic instructions to produce proteins

Question 16: what is the definition of specific heat?

Answer:

the amount of heat necessary to raise the temperature of one gram of that molecule by one degree Celsius

Question 17: what is the third step of cellular respiration?

Answer:

electron transport chain

Question 18: what are the most important functions of carbohydrates?

Answer:

storage, structure, energy

Question 19: what does a relatively high specific heat value allow for?

Answer:

resists shifts in temperature

Question 20: what are the three steps of aerobic respiration?

Answer:

glycolysis, the citric acid cycle (Krebs cycle), electron transport chain

Question 21: what is cohesion?

Answer:

the ability of a molecule to stay bonded or attracted to another molecule of the same substance Question 22: what is the precursor to produce greater amounts of ATP in the final steps of respiration?

Answer:

NADH

Question 23: what is RNA used for?

Answer:

transfer of information from DNA to protein level and as a messanger

Question 24: where does the citric acid cycle take place?

Answer:

in the matrix of the mitochondria

Question 25: what is a mitochondrion?

Answer:

found in most eukaryotic cells and are the site of cellular respiration

Question 26: what is the first step of cellular respiration?

Answer:

glycolysis

Question 27: what is the central vacuole?

Answer:

found in plants, used for storage, waste disposal, protection, and hydrolysis

Question 28: how do bound and free ribosomes differ?

Answer:

identical in structure, but have slightly different roles