HESI BIOLOGY NURSE HUB PRACTICE TESTS 1-5: EXAM

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HESI BIOLOGY (NURSE HUB PRACTICE TESTS 1-5): EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -99 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Which of the following about phospholipids is incorrect?

Answer:

The phosphate group in phospholipids is nonpolar and non-soluble in water.

Question 2: Lysosomes

Answer:

are the digestive system of the cell. Lysosomes contain hydrolytic enzymes which allow them to hydrolyze (break down) proteins, fats, sugars, and nucleic acids taken into the cell as well as break down other worn out organelles within the cell.Question 3: If a substance is moving across a plasma membrane against the concentration gradient, what type of transport is required?

Answer:

Active transport

Question 4: hypotonic solution

Answer:

Solute concentration is less than that inside the cell; cell gains water, and swells and burst

Question 5: anaphase

Answer:

the sister chromatids separate into individual chromosomes and are pulled apart. Note that the separated chromatids are now each considered individual chromosomes.

Question 6: Steroids

Answer:

are lipids that are a component of cellular membranes and a precursor to significant hormones and drugs.

Question 7: Which of the following is not true about water?

Answer:

The polarity of water's bonds allows for covalent bonding between molecules.

Question 8: Which type of cell lacks a defined nucleus?

Answer:

Prokaryotic cell Question 9: A repeatable procedure of gathering data to support or refute a hypothesis is known as?

Answer:

conducting an experiment Question 10: Which of the following correctly lists the hierarchic system of classification from most inclusive to least inclusive?

Answer:

Kingdom, Phylum, Class, Order, Family, Genus, Species Question 11: Which of the following statements about catabolic pathways that lead to cellular respiration is correct?

Answer:

Cellular respiration produces more energy than fermentation.

Question 12: hypertonic solution

Answer:

Solute concentration is greater than that inside the cell; cell loses water, cell shrivels and shrinks Question 13: The Kerbs Cycle:

Answer:

is the second step of cellular respiration when pyruvate is transported to the mitochondria where it used in a series of reactions.

Question 14: What is the role of water in photosynthesis?

Answer:

Supply electrons in the light reactions

Question 15: guanine bonds with ....

Answer:

Cytosine

Question 16: Phospholipids

Answer:

consist of two fatty acids bonded to a phosphate group. The phosphate group is polar and soluble in water whereas the hydrocarbon tail of the fatty acids is nonpolar and non-soluble in water. This quality is important in the function of cellular membranes, including the plasma membrane, as the molecules organize themselves in a way that creates a barrier to protect the cell.Question 17: How does the number of chromosomes in daughter cells produced by meiosis differ from the number of chromosomes in daughter cells produced by mitosis?

Answer:

In meiosis, each daughter cell contains half as many chromosomes as the parent; In mitosis, each daughter cell contains the same number of chromosomes as the parent cell.

Question 18: Golgi apparatus

Answer:

is the cell organelle responsible for packaging, processing, and shipping proteins from the endoplasmic reticulum (ER) throughout the cell.

Question 19: Crossing over occurs during which phase of meiosis?

Answer:

prophase 1 Question 20: Which organelle is responsible for storing, modifying and sending out products of the endoplasmic reticulum, such as proteins?

Answer:

golgi apparatus

Question 21: Eukaryotic cells ...

Answer:

are more complex than prokaryotic cells. They contain a defined, membrane-enclosed nucleus as well as membrane-bound organelles.Question 22: Which step in cellular respiration takes place in the mitochondria of the cell and produces two ATP molecules, six carbon dioxide molecules, and six NADH molecules for every molecule of glucose?

Answer:

The Kerbs Cycle

Question 23: In RNA, the complement of adenine (A) is ....... instead of ...

Answer:

uracil, instead of thymine

Question 24: Chloroplasts

Answer:

responsible for energy production, are found in plants and are the site of photosynthesis

Question 25: Ribosomes

Answer:

site of protein synthesis, makes protein

Question 26: Where in the cell does active transport take place?

Answer:

plasma membrane