HESI A2 QUESTIONS & ANSWERS

1. Which of the following is not true of mitosis? A. Mitosis produces daughter cells B. Mitosis has five main stages C. Mitosis can only be done by haploids D. Following mitosis, daughter cells are identical to parent cells 2. In meiosis, the chromosome number is reduced from: A. 46 to 23 B. 46 to 33 C. 28 to 14 D. 24 to 12 3. Cellular respiration takes place in which of the following? A. Golgi apparatus B. Mitochondrion C. Chloroplast D. Ribosome 4. Which of the following is the term used to represent two alleles that are the same type? A. Homosynchronous B. Hypersynchronous C. Heterozygous D. Homozygous The Punnett square shows that one parent carries the recessive gene for a cleft chin (c) while the other parent does not. 5. What percentage of the parents' offspring is predicted to have a cleft chin? A. 25% B. 50% C. 0% D. 75% 6. Which of the following options identifies the products of cell respiration? A. Water, carbon dioxide, and oxygen B. Glucose and oxygen C. Water, carbon dioxide, and adenosine triphosphate (ATP) D. Water, glucose, and oxygen 7. Which stage of mitosis is occurring when the nuclear envelope begins to disappear and the chromosomes begin to attach to the spindle that is forming along the axis of the cell? A. Prometaphase B. Metaphase C. Anaphase D. Prophase 8. In the hierarchic organizational system, which of these is the most restrictive category? A. Genus B. Class C. Kingdom D. Species 9. Water is a polar molecule that can be: A. cohesive and corrosive B. cohesive and adhesive C. electrostatic and ionic D. repellent and attractive 10. What is considered the main objective of the translation stage of protein synthesis? A. To produce amino acids B. To produce nucleotides C. To produce fatty acids D. To produce nucleic acids 11. Prokaryotic cells lack which of the following? A. A cell membrane B. Genetic material C. Cytoplasm D. Membrane bound organelles 12. Proteins are polymers of 20 molecules called: A. Amino acids B. Phospholipids C. Carbohydrates D. Fatty acids 13. Which of the following statements is true if a molecule has adhesion? A. Two molecules of the same substance have the ability to stay bonded to one another B. The molecule has the ability to bond to or attract other molecules B. A molecule has the ability to increase its heat when necessary C. The molecule has the ability to form hydrogen bonds 14. Which of the following statements is most accurate regarding the transcription of DNA? A. RNA uses reverse transcriptase to make mRNA B. DNA uses mRNA to produce tRNA C. RNA creates a duplicate copy of DNA D. RNA copies DNA to produce mRNA 15. What are the two types of cells in biology? A. Ribosomes and lysosomes B. Mitochondria and chloroplasts C. Nucleic and protein D. Prokaryotic and eukaryotic 16. Which two items react during cellular respiration? A. Glucose and water B. Carbon dioxide and water C. Carbon dioxide and oxygen D. Glucose and oxygen 17. What must first occur before a cell can be divided to grow, develop, and reproduce organisms? A. RNA replication B. DNA replication C. Gene replication D. Chromosome replication 18. Which of the following organelles is known as the cell's transportation center? A. Golgi apparatus B. Endoplasmic reticulum C. Mitochondria D. Lysosomes