HESI A2 EXAM - BIOLOGY

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HESI A2 EXAM - BIOLOGY

Qs and Ans Expert- Explanation

This Exam contains:

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

Question 1: what is ATP short for?

Answer:

adenosine triphosphate

Question 2: what are cardiovascular problems associated with?

Answer:

diets containing high quantities of satu fats

Question 3: is the hydrocarbon tail of a phospholipid water-soluble or not?

Answer:

it is not water-soluble

Question 4: where can ribosomes be found?

Answer:

free ribosomes in the cytoplasm and bound ribosomes attached to the rough endoplasmic reticulum

Question 5: what is NADH short for?

Answer:

reduced nicotinamide adenine dinucleotide

Question 6: what are the three steps of aerobic respiration?

Answer:

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

Question 7: what is the largest biological molecule?

Answer:

protein

Question 8: what does the nucleus contain?

Answer:

DNA

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 are the steps of the scientific method?

Answer:

observation, hypothesis, experiment, conclusion

Question 11: what is a mitochondrion?

Answer:

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

Question 12: how are reactions catalyzed in a cell?

Answer:

enzymes

Question 13: what are found in cells with a high rate of protein synthesis?

Answer:

large number of ribosomes

Question 14: where does glycolysis take place?

Answer:

in the cytosol

Question 15: what is significant about satu fat?

Answer:

no double bonds in their hydrocarbon tail

Question 16: what are ribosomes?

Answer:

organelles that read mRNA and translate the genetic instructions to produce proteins Question 17: what is the result from one glucose molecule in the citric acid cycle?

Answer:

two ATP molecules, six molecules of carbon dioxide, six molecules of NADH

Question 18: what is the role of the golgi apparatus?

Answer:

transports proteins from the ER throughout the cell

Question 19: what are the two types of fatty acids?

Answer:

satu and unsatu

Question 20: what are carbohydrates?

Answer:

generally long chains or polymers of sugars

Question 21: what is characteristic of prokaryotic cells?

Answer:

lack a defined nucleus and do not contain membrane-bound organelles

Question 22: how is a precusor to glucose formed?

Answer:

photosynthesis

Question 23: what does amphipathic mean?

Answer:

molecules with both a hydrophopic and hydrophilic region

Question 24: what is the second step of cellular respiration?

Answer:

citric acid cycle (Krebs cycle)

Question 25: what are enzymes?

Answer:

proteins that act to catalyze different reactions or processes

Question 26: is unsatu fat liquid or solid at room temperature?

Answer:

liquid

Question 27: what is the chemical composition of water?

Answer:

two hydrogen atoms covalently bonded to an oxygen atom Question 28: what is the precursor to produce greater amounts of ATP in the final steps of respiration?

Answer:

NADH