HESI A2 Practice tests Biology (100 OUT OF 100) Questions and Answers (Latest Update)

HESI A2 Practice tests Biology (100 OUT OF 100) Questions and Answers (Latest Update) Question: Which organelle is responsible for protein synthesis A) mitochondrion B) Vacuole C) cell membrane D) ribosome Answer: B Question: Why is yeast used to make bread rise? A) it engages in photosynthesis, which produces oxygen gas B) carbon dioxide forms while yeast carries out photosynthesis C) year carries out fermentation, producing ethanol and carbon dioxide D) yeast breathes in oxygen and produces carbon dioxide through aerobic respiration Answer: C Question: How is mitosis different from meiosis? A) mitosis is the process by which sex cells are formed B) meiosis creates cells with half the chromosome of the parent cell C) telophase does not take place in mitosis D) spermatogenesis and oogenesis occur via mitosis Answer: C Question: Which statement is untrue? A) DNA is single stranded B) RNA contains gracious C) DNA codes for protein D) DNA cannot be altered Answer: B Question: Imagine that two parents both carry the recessive gene for cystic fibrosis. Any homozygous recessive offspring will manifest the disease. What percentage of the offspring is predicted to be carriers but not manifest the disease? A) 0% B) 25% C) 50% D) 100% Answer: C Question: A cell is in a solution in which the concentration of solutes is higher inside the cell than outside the cell. What would you expect to happen to the cell? A) it will swell and possibly burst B) it will shrivel and shrink C) it will maintain its current size D) it will grow a supportive cell wall A Question: What is the purpose of phloem tissue in plant stems? A) it conducts water up through the stem B) it conducts the energy of light to leaves C) It conducts food throughout the plant D) it conducts carbon dioxide throughout the plant Answer: D Question: Physical factors such as temperature and pH can alter enzyme activity because they have an effect on the enzymes A) acidity B) shape C) chemistry D) substrate Answer: B Question: Which part of a plants reproductive system is of a different " gender" than the other? A) Staten B) pistol C) stigma D) style Answer: A Question: What kind of symbiosis exits between. A pneumonia bacterium and a human A) mutualism B) parasitism C) commensalism D) competition Answer: C Question: Which organelle is responsible for protein synthesis A) mitochondrion B) Vacuole C) cell membrane D) ribosome Answer: B Question: Why is yeast used to make bread rise? A) it engages in photosynthesis, which produces oxygen gas B) carbon dioxide forms while yeast carries out photosynthesis C) year carries out fermentation, producing ethanol and carbon dioxide D) yeast breathes in oxygen and produces carbon dioxide through aerobic respiration Answer: C Question: How is mitosis different from meiosis? A) mitosis is the process by which sex cells are formed B) meiosis creates cells with half the chromosome of the parent cell C) telophase does not take place in mitosis D) spermatogenesis and oogenesis occur via mitosis Answer: C Question: Which statement is untrue? A) DNA is single stranded B) RNA contains gracious C) DNA codes for protein D) DNA cannot be altered Answer: B Question: Imagine that two parents both carry the recessive gene for cystic fibrosis. Any homozygous recessive offspring will manifest the disease. What percentage of the offspring is predicted to be carriers but not manifest the disease? A) 0% B) 25% C) 50% D) 100% Answer: C Question: A cell is in a solution in which the concentration of solutes is higher inside the cell than outside the cell. What would you expect to happen to the cell? A) it will swell and possibly burst B) it will shrivel and shrink C) it will maintain its current size D) it will grow a supportive cell wall A Question: What is the purpose of phloem tissue in plant stems? A) it conducts water up through the stem B) it conducts the energy of light to leaves C) It conducts food throughout the plant D) it conducts carbon dioxide throughout the plant Answer: D Question: Physical factors such as temperature and pH can alter enzyme activity because they have an effect on the enzymes A) acidity B) shape C) chemistry D) substrate Answer: B Question: Which part of a plants reproductive system is of a different " gender" than the other? A) Staten B) pistol C) stigma D) style Answer: A Question: What kind of symbiosis exits between. A pneumonia bacterium and a human A) mutualism B) parasitism C) commensalism D) competition Answer: C Question: the scientific name for a house cat is Delia cactus. this indicates the house cats ___________ and ______________. A) kingdom; family B) order; subspecies C) phylum;class D) genus; species C Question: Beeswax is an example of what kind of molecule? A) Lipid B) carbohydrate C) protein D) nucleic acid Answer: A Question: What takes place in a lysosome? A) ribosomes are made B) food is produced C) water is stored D) food is digested Answer: A Question: Which organism reproduces via binary fission? A) mushroom B) blue whale C) rainbow trout D) salmonella Answer: D Question: In which phrase of cell division do to chromosome replicate? A) Prophase B) Interphase C) Anaphase D) Telophase Answer: B Question: In a strand of DNA, you would expect to see adenine paired with A) cytosine B) uracil C) rhyming D) guanine Answer: A Question: Hemophilia is a sex linked trait carried on the X chromosome. In an example of a male with hemophilia and a female carrier, what ratio of the offspring is predicted to have the disease? A) 0 female : 2 male B) 1 female : 0 male C) 1 female : 2 male D) 2 female : 1 male Answer: B