HESI®A2 Biology Practice Test 2

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

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

What is the difference between saturated and unsaturated fatty acids?

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

How do large bodies of water moderate climate?

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

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

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)

What is the function of tRNA during translation?

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:

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?

What type of biological molecules are enzymes?

Which cellular structure is found in both prokaryotes and eukaryotes?

What is the largest type of biological molecule?

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

Which best describes the light reactions of photosynthesis?

During which phase of mitosis do sister chromatids separate?

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

How many different amino acids are found in biological proteins?

Which molecule contains the stop codon?

Which of the following is a reactant of photosynthesis?

What is the product of meiosis?

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

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

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?