HESI A2 BIOLOGY ELSEVIER EXAM QUESTIONS

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HESI A2 (BIOLOGY) ELSEVIER EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -31 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: In the hierarchic system of classification, which of the following is the least inclusive?

Answer:

Species Question 2: What is the sum of all chemical reactions that occur in an organism?

Answer:

Metabolism

Question 3: Why is it important for cells to undergo mitosis?

Answer:

Mitosis produces cells for growth and repair of body tissue.Question 4: Athletes are often concerned with the question of what they need in their diets to increase muscle mass and strength. What biologic molecule would you recommend that would accomplish this?

Answer:

Proteins

Question 5: A molecule of water is bonded with another molecule of water by what type of bond?

Answer:

Hydrogen Question 6: After observing an event, you develop an explanation. This statement is referred to as which of the following?

Answer:

Hypothesis Question 7: Which of the following shows how information is transformed to make a protein?

Answer:

DNA-RNA- protein Question 8: Which of the following are the distinct organelles that produce cell energy?

Answer:

Mitochondrion and chloroplast Question 9: Which of the following proteins catalyze different reactions or processes?

Answer:

Enzyme

Question 10: How do phospholipids function in cells?

Answer:

They are integral components of the plasma membrane.

Question 11: Proteins are polymers of which of the following?

Answer:

Amino acids Question 12: Which of the biologic molecules are components of the molecules of inheritance?

Answer:

Nucleic acids

Question 13: Which part of cellular respiration produces the greatest amount of ATP?

Answer:

Electron transport chain Question 14: Which cell organelle functions to transport materials from the endoplasmic reticulum throughout the cell?

Answer:

Golgi apparatus Question 15: Which of the following is a benefit of the intermolecular hydrogen bonding of water? (select all that apply)

Answer:

Water has a relatively high specific heat value. Water has a strong cohesive and adhesive properties.Polarity of water allows it to act as a versatile solvent.Question 16: In a cell, reactions take place in a series of steps called:

Answer:

Metabolic pathways Question 17: Which component of the cell contributes to the protection, communication, and passage of substances into and out of the cell?

Answer:

Cell membrane

Question 18: Why is polarity the most important characteristic of water?

Answer:

The results of the polarity are hydrogen bonding, a high specific heat value, and its versatile solvent properties.Question 19: The cell membrane consists of a bilayer of phospholipids with proteins, cholesterol, and glycoproteins. The bilayer creates a hydrophobic region between two layers of lipids, making it which of the following?

Answer:

Selectively permeable

Question 20: Which type of cell contains no defined nucleus?

Answer:

Prokaryotic Question 21: Which organelle would you expect to be present in a cell responsible for detoxifying multiple molecules?

Answer:

Smooth endoplasmic reticulum Question 22: Which of the following statements is true about the Krebs cycle and the Calvin Cycle?

Answer:

Both result in a net production of ATP and NADH.Question 23: A cell from heart muscle would more than likely contain an unusually high

proportion of:

Answer:

Mitochondria Question 24: Of all the molecules that re significant to biology, which of the following are considered the most important?

Answer:

Carbohydrates, lipids, protein, nucleic acids.Question 25: 72 Chromosomes undergo meiosis. How many chromosomes will be in each gamete?

Answer:

36

Question 26: What is the fundamental unit of biology?

Answer:

Cell