HESI Biology Practice Test

Which of the following is the MOST inclusive category in the hierarchical organizational system for nomenclature?

Which best describes the bonds between atoms within a water molecule?

What is the role of the Golgi apparatus in the eukaryotic cell?

Where can ribosomes be found inside of a eukaryotic cell?

Which of the following is a correct description of metaphase during mitosis?

The plasma membrane of a cell is composed of:

What are the products of the Krebs cycle?

Which of the following types of cell results from cell division by meiosis?

Which of the following processes begins with a diploid cell and ends in the formation of diploid cells?

During which phase of the eukaryotic cell cycle is DNA replicated?

The term that describes a phospholipid having both a hydrophilic end and a hydrophobic end:

For a trait that shows a simple dominance inheritance pattern, which genotypes will result in the individual having the dominant phenotype?

The alternate versions of a single gene are known as:

Which of the following is an example of a heterozygous genotype?

Which of the following activities does NOT lead to ATP production?

Which term refers to when one gene influences multiple seemingly unrelated phenotypic traits?

If an individual who is homozygous dominant for a given trait is crossed with an individual who is homozygous recessive for the same trait, what percentage of offspring should show the recessive phenotype? Assume a simple dominance inheritance pattern.

Which of the following is a typical base pair seen in double-stranded DNA?

Which process synthesizes mRNA using DNA as the template?

Which type of large biological molecule is correctly matched with the type of small molecule that composes it?

Which cellular structure is the location of protein synthesis in a eukaryotic cell?

For every glucose molecule that undergoes cellular respiration, approximately how many ATP molecules can be produced?

During which step of cellular respiration is NADH oxidized to produce ATP and water?

Glycolysis is the conversion of _______ to ______ .

Which parts of two complementary nucleotides interact with each other in a double-stranded DNA molecule?

How do large bodies of water moderate climate?

What component of animal fats cause them to solidify at room temperature?

What is the difference between saturated and unsaturated fatty acids?

Which of the following correctly compares the molecular orientation of molecules in liquid versus solid water (ice)?

A statement or explanation of certain events is called a(n):

The liver is an organ responsible for detoxifying the body of many harmful substances. Therefore, you might expect liver cells to each contain a high amount of:

What is the function of tRNA during translation?

A pea plant has alleles for the dominant tall gene (T) and the recessive short gene (t). Therefore, its genotype is Tt. Which of the following correctly describe its phenotype if there is complete dominance? Incomplete dominance? (complete, incomplete)

In double-stranded DNA, the amount of cytosine is always equal to the amount of which other nucleotide base?

Which of the following descriptions relates to water’s property of cohesion?

Which part of cellular respiration takes place in the cytosol of the eukaryotic cell?

What is the largest type of biological molecule?

Which cellular structure is found in both prokaryotes and eukaryotes?

What type of biological molecules are enzymes?

A scientist conducts an experiment to discover the effect of music on the growth of pea plants. The scientist hypothesizes that the music will help pea plants grow at a faster rate than pea plants without music. By the end of the experiment, pea plants grown with music playing grew to an average height of 5.6 inches, while pea plants grown without music playing grew to an average height of 2.3 inches.

Which of the following is the correct conclusion from this experiment?

Which molecule contains the stop codon?

How many different amino acids are found in biological proteins?

Which of the following is a way to visualize a family’s history, indicating which individuals had a particular genetic trait?

During which phase of mitosis do sister chromatids separate?

Which best describes the light reactions of photosynthesis?

An individual has the dominant phenotype for a given trait that shows a simple dominance inheritance pattern. This individual is crossed with a homozygous recessive individual. Half of their offspring have the dominant phenotype, while the other half of their offspring have the recessive phenotype for the trait.

What is the genotype of the parent having the dominant phenotype?

If a parent is heterozygous, what percent of its offspring will receive the recessive allele from this parent?

When does exchange of genetic information between non-sister chromatids within a duplicated homologous chromosome pair occur?

What is the product of meiosis?

Which of the following is a reactant of photosynthesis?