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HESI Biology Practice Test 4

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HESI Biology Practice Test 4

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Question 1 of 10

1. Question

Which statement describes the relationship between the densities of ice and liquid water?

Ice has a higher density than liquid water.
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Ice has a lower density than liquid water.
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Ice has the same density as liquid water.
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There is no consistent relationship between the densities of ice and liquid water.
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Question 2 of 10

2. Question

Which process do prokaryotes use for cell division?

Mitosis
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Meiosis I
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Meiosis II
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Binary fission
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Question 3 of 10

3. Question

Consider a cell undergoing meiosis. Which best describes the cells resulting from meiosis I?

Two diploid cells with each chromosome composed of two sister chromatids
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Two haploid cells with each chromosome composed of two sister chromatids
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Two haploid cells with each chromosome being one double-stranded DNA molecule
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Four haploid cells with each chromosome being one double-stranded DNA molecule
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Question 4 of 10

4. Question

If an individual heterozygous for a gene mates with an individual who is homozygous recessive for the same gene, what is the probability that their offspring will be homozygous recessive?

100%
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50%
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25%
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0%
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Question 5 of 10

5. Question

If the A allele is completely dominant to the a allele, which groups of genotypes will result in an individual having the dominant phenotype?

AA and aa
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Aa and aa
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AA and Aa
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AA, Aa, and aa
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Question 6 of 10

6. Question

Cystic fibrosis is an autosomal recessive disease. If two individuals who do not suffer from cystic fibrosis but each carry the allele associated with the disease have children, what is the probability that they will have a child having cystic fibrosis?

100%
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50%
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25%
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0%
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Question 7 of 10

7. Question

Which term refers to an individual’s observable characteristics resulting from what genes they have as well as environmental influences?

genome
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haplotype
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genotype
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phenotype
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Question 8 of 10

8. Question

If two individuals both having the genotype AaBb are crossed, what proportion of their offspring do you expect to have the dominant A phenotype combined with the recessive b phenotype?

9/16
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1/4
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3/16
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1/16
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Question 9 of 10

9. Question

What term refers to two chromosomes that have the same genes in the same order but not necessarily the same alleles of each gene?

Homologous
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Nonhomologous
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Homozygous
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Heterozygous
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Question 10 of 10

10. Question

Within a double-stranded DNA molecule, what type of bond links nucleotides to each other within a strand of DNA?

Hydrogen bonding between the nitrogenous bases
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Covalent bonding between the phosphate of one and the sugar of another
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Hydrophobic bonding between nitrogenous bases
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Ionic bonding between the phosphate of one and the sugar of another
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Next: HESI Biology Practice Test 5

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