HESI A2 Biology Questions with complete solutions 2023.

HESI A2 Biology Questions with complete solutions 2023. Why is polarity the most important characteristic of water? - correct answers.The results of the polarity are hydrogen bonding, a high specific heat value, and its versatile solvent properties. Athletes are often concerned with the question of what they need in their diets to increase muscle mass and strength. What biologic molecule would you recommend that would accomplish this? A. Carbohydrates B. Proteins C. Lipids D. Nucleic acids - correct answers.B. Proteins Which organelle would you expect to be present in a cell responsible for detoxifying multiple molecules? A. Rough ER B. Smooth ER C. Lysosome D. Golgi apparatus - correct answers.B. Smooth ER A cell from heart muscle would more than likely contain an usually high proportion of: A. Lysosomes B. Mitochondria C. mRNA D. Ribosomes - correct answers.B. Mitochondria Which part of cell respiration produces the greatest amount of ATP? A. ETC B. Glycolysis C. Krebs cycle D. Fermentation - correct answers.A. ETC When plants do not receive enough water their photosynthetic rated drops. This is because: A. Water is a raw material for the light reactions in photosynthesis. B. Carbon dioxide is not available. C. Water provides the carbon atoms used to make sugar. D. Not enough oxygen is produced to keep fermentation running - correct answers.A. Water is a raw material for the light reactions in photosynthesis Which of the following statements is true about the Krebs cycle and the Calvin cycle? A. Both result in a net production of ATP and NADH B. Both require a net input of ATP C. Both result in release of oxygen D. Both use light to initiate the process. - correct answers.A. Both result in a net production of ATP and NADH Why is it important for cells to undergo mitosis? - correct answers.Mitosis produces cells for growth and repair of body tissue. 72 chromosomes undergo meiosis. How many chromosomes will be in each gamete? A. 18 B. 36 C. 72 D. 144 - correct answers.B. 36 Which of the following shows how information is transformed to make a protein? A. DNA-RNA-protein B. Gene-chromosome-protein C. ATP-amino acid-protein D. RNA-DNA-protein - correct answers.A. DNA-RNA-protein In the hierarchic system of classification, which of the following is least inclusive? A. Kingdom B. Class C. Genus D. Species - correct answers.D. Species After observing an event, you develop an explanation. This statement is referred to as which of the following? A. Hypothesis B. Experiment C. Conclusion D. Theory - correct answers.A. Hypothesis A molecule of water is bonded with another molecule of water by what type of bond? A. Ionic B. Covalent C. Hydrogen D. Molecular - correct answers.C. Hydrogen Which of the following is a benefit of the intermolecular hydrogen bonding of water? (Select all that apply) A. Water has a relatively high specific heat value. B. Water has strong cohesive and adhesive properties. C. Polarity of water allows it to act as a versatile solvent. D. Water moves from higher to lower concentrations - correct answers.A. Water has a high specific heat B. Water has strong cohesive and adhesive properties C. Polarity of water allows it to act as a versatile solvent Of all the molecules that are significant to biology, which of the following are considered the most important? A. Carbohydrates, lipids, protein, and nucleic acids B. Carbohydrates, lipids, protein, and calcium C. Carbohydrates, lipids, protein, and sulfur D. Carbohydrates, lipids, protein, and iron - correct answers.A. Carbohydrates, lipids, protein, and nucleic acids Lipids are better known as fats, but what are they specifically? (Select all that apply.) A. Fatty acids B. Phospholipids C. Ketones D. Steroids - correct answers.A. Fatty acids B. Phospholipids D. Steroids What are the two categories of fatty acids? A. Trans fat and saturated fat B. Trans fat and unsaturated fats C. Saturated fats and unsaturated fats D. Saturated fats and polyunsaturated fats - correct answers.C. Saturated fats and unsaturated fats How do phospholipids function in cells? A. They are integral components of the nuclear membrane. B. They are integral components of the cytoplasmic skeleton. C. They are integral components of the mitochondrial membranes. D. They are integral components of the plasma membrane. - correct answers.D. They are integral components of the plasma membrane. Which of the biologic molecules are considered the most significant contributor to cellular function? A. Carbohydrates B. Lipids C. Proteins D. Nucleic acids - correct answers.C. Proteins Proteins are polymers of which of the following? A. Monosaccharides B. Amino acids C. Fatty acids D. Nucleotides - correct answers.B. Amino acids Which of the following proteins catalyze different reactions or processes?