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HESI Practice Test 1 Biology

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Practice Test 1 (Diagnostic)
HESI Practice Test 1 Biology

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Categories

An Introduction to Biology 0%
Cell Structure Function and Type 0%
Cellular Reproduction Cellular Respiration and Photosynthesis 0%
Genetics and DNA 0%

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Question 1 of 25

1. Question

In the taxonomic system, a class is grouped into which of the following levels?

Order
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Family
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Species
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Phylum
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Question 2 of 25

2. Question

A researcher characterizes a polymer that consists of glycerol molecules. Which of the following does she write in her notes about this polymer?

These molecules will form protein biomolecules.
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This polymer is capable of storing very little energy.
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The glycerol molecules are covalently bonded together.
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This polymer will help transmit genetic information in a cell.
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Question 3 of 25

3. Question

A researcher characterizes the amino acid chain and structure of a novel substance. Which of the following types of substance is the researcher studying?

Fat
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DNA
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Enzyme
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Sucrose
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Question 4 of 25

4. Question

A study was performed to evaluate which type of road salt deiced a road most quickly. Which of the following is the independent variable?

Deicing time period
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Road used for deicing
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Type of road salt used
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Amount of road salt used
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Question 5 of 25

5. Question

A researcher predicts that a new drug will lower cholesterol in people. What is this statement called?

Law
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Theory
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Variable
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Hypothesis
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Question 6 of 25

6. Question

Which trait is used to distinguish living things from nonliving things?

Size
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Shape
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Homeostasis
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Environment
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Question 7 of 25

7. Question

Why did it take many years for the cell theory to be developed?

Advancements in microscopy took place slowly.
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Cells were difficult to isolate for experimental analysis.
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Researchers believed a cell formed from preexisting cells.
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Scientists already proved that cells were essential for life.
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Question 8 of 25

8. Question

A researcher discovers a cell that is less than 0.5 millimeters in diameter. This cell has pili surrounding its cell wall. Which of the following does the researcher classify this cell as?

Autotroph
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Eukaryote
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Heterotroph
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Prokaryote
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Question 9 of 25

9. Question

Which of the following structures do prokaryotic cells rely on for movement?

Flagellum
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Microtubule
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Pili
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Vesicle
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Question 10 of 25

10. Question

Which of the following is a characteristic of eukaryotes?

These organisms are all unicellular.
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They lack a membrane-bound nucleus.
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Many organelles are in their cytoplasm.
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Bacteria and plants are examples of eukaryotes.
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Question 11 of 25

11. Question

Which of the following cellular processes do autotrophs rely on to obtain energy?

Carbon fixation
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Cell respiration
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Photosynthesis
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Gluconeogenesis
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Question 12 of 25

12. Question

Which of the following explains how a plant cell different from an animal cell?

It lacks a cell wall.
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It is rectangular.
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It has many vacuoles in its cytoplasm.
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It traps sunlight using its mitochondria.
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Question 13 of 25

13. Question

Glycolysis breaks down

acetyl coA.
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ATP.
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glucose
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pyruvate
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Question 14 of 25

14. Question

During the G₂ phase, more copies of tubulin are made to separate which of the following?

histones
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chromosomes
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daughter cells
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sister chromatids
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Question 15 of 25

15. Question

Which process involves crossing over?

Mitosis
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Meiosis
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Calvin cycle
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Cell respiration
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Question 16 of 25

16. Question

Chromosomes line up during

anaphase.
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interphase
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prometaphase.
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telophase.
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Question 17 of 25

17. Question

What is the correct order of the stages of the cell cycle?

\(G_1, S, G_2, M\)
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\(G_2, S, G_1, M\)
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\(M, S, G_2, G_1\)
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\(S, M, G_1, G_2\)
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Question 18 of 25

18. Question

Which of the following is made only during the light reaction phase of photosynthesis?

ATP
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CO₂
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H₂O
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FADH₂
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Question 19 of 25

19. Question

Which of the following is a segment of DNA that transmits information from parent to offspring?

Centromere
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Chromatid
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Chromosome
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Gene
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Question 20 of 25

20. Question

The replication of DNA ends with a twisted strand called a _____.

base pair
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nucleic acid
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double helix
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single strand
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Question 21 of 25

21. Question

Human cells have _____ sets of different chromosomes.

12
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23
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46
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50
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Question 22 of 25

22. Question

Which of the following describes how an organism can have two alleles for each trait but only one of those alleles is expressed?

One of the alleles is hidden in the chromosome.
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One of the alleles is dominant over the other allele.
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It depends on which allele is obtained from a parent first.
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The allele closest to the top of the chromosomes is expressed.
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Question 23 of 25

23. Question

An RNA copy of a gene used as a blueprint for a protein is called which of the following?

mRNA
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pre-mRNA
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rRNA
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tRNA
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Question 24 of 25

24. Question

An offspring receives which of the following number of allele(s) for a particular trait from each parent.

1
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2
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3
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4
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Question 25 of 25

25. Question

Crossing two heterozygous flowers, Bb x Bb, which of the following is the chance of obtaining a homozygous, recessive trait?

25%
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50%
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75%
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100%
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HESI Practice Test 1 Biology

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