Download Hesi A2 Biology Practice Questions and answers 2025 update a+ pass. Qs Which organelle is and more Exams Nursing in PDF only on Docsity!
Hesi A2 Biology Practice Questions and
answers 2025 update a+ pass.
Qs Which organelle is responsible for protein synthesis? - n Ans✔ Ribosome Qs Why is yeast used to make bread rise? - n Ans✔ Yeast carries out fermentation, producing ethanol and carbon dioxide Qs How is mitosis different from meiosis? - n Ans✔ Meiosis creates sex cells with half the # of chromosomes of the parent cell whereas mitosis creates cells that are exact copies of each other, down to the number of chromosomes Qs What can be altered? - n Ans✔ DNA Qs What is single stranded? - n
Ans✔ RNA Qs What contains uracil? - n Ans✔ RNA Qs What codes for proteins? - n Ans✔ DNA Qs 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? - n Ans✔ 50 percent Qs 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? - n Ans✔ It will swell and probably burst/hypotonic situation Qs What is the purpose of phloem tissue in plant stems? - n
Order/carnivora Family/felidae Genus/ Felis Species/catus Qs Beeswax is an example of what kind of molecule? - n Ans✔ Lipid, waxes oils and fats are lipids Qs What takes place in a lysosome? - n Ans✔ Food is digested, the lysosome contains digestive enzymes. The job of a lysosome is to digest food for cells and break down cells waste products Qs Which organism reproduces via binary fission? - n Ans✔ Salmonella Qs In which phase of cell division do the chromosomes replicate? - n Ans✔ Interphase-active phase of a cells reproductive life, the cell produces nucleic acids and proteins and doubled its # of chromosomes
Qs In a strand of DNA, you would expect to see adenine paired with? - n Ans✔ Thymine/adenine Cytosine/guanine Qs 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? - n Ans✔ 1 female: 0 male Qs What is represented by this formula 6CO2+6H2O=>C6H12O6+6O2 - n Ans✔ Photosynthesis, carbon dioxide pairing with water to form a simple sugar and oxygen Qs 3 students measured the mass of a product of combustion. They recorded measurements of 5.14g 5.16g and 5.17g if the known mass of the product is 5.30g how would you describe the students measurements? - n Ans✔ Precise Qs What is the energy pyramid? - n Ans✔
Simple carbohydrates are simple sugars, complex carbohydrates are simple sugars linked with covalent bonds Qs What conducts water up through the stem of a plant? - n Ans✔ Xylem Qs What are the female parts of a plant? - n Ans✔ Pistil (female reproductive organ) Stigma (top part of pistil) Style (slender stalk below the stigma) Qs Vascular plants whose seeds have no protective covering? - n Ans✔ Gymnosperms Qs Organisms that make their own food through photosynthesis example blue-green algae - n Ans✔ Autotrophs Qs
Infectious organisms that spread disease - n Ans✔ Pathogens Qs Which organelle is the site of energy production? - n Ans✔ Mitochondrion Qs What happens to glucose during glycolysis? - n Ans✔ It splits into molecules of pyruvic acid Qs What process do cells in the tip of a plants roots undergo to increase in number? - n Ans✔ Mitosis Qs How do RNA and DNA derive their names? - n Ans✔ From the sugar each contains Qs If a disease is carried on the dominant allele, only the aa combination of recessive genes represents a disease free offspring. - n
Qs Two organisms live in a relationship from which both benefit - n Ans✔ Mutualism, both species receive mutual benefit Qs Which gives the order of four taxonomic categories from least to most specific? - n Ans✔ Kingdom phylum class order family genus species Qs Which molecules contain only carbon, hydrogen, and oxygen? - n Ans✔ Carbohydrates and lipids Qs Which structure is found in Protists but not in monerans? - n Ans✔ Golgi apparatus Qs How does yeast reproduce? - n Ans✔ Budding Qs What takes place during anaphase? - n
Ans✔ Chromosomes move to opposite ends of the spindle Qs What is DNA composed of? - n Ans✔ Deoxyribose, a simple sugar, nitrogen based, and a phosphate group Qs What are products of the Krebs cycle? - n Ans✔ ATP, carbon dioxide, NADH Qs The Krebs or citric acid cycle is the third step of what? - n Ans✔ Carbohydrate catabolism, the breakdown of sugar. Before it begins, glucose has been broken down via glycolysis into pyruvic acid Qs Whose efficiency of energy is greater on the energy pyramid? - n Ans✔ Herbivore Qs What is the function of decomposition in the carbon cycle? - n Ans✔
Qs In which phase of mitosis do new nuclear membranes form around sets of chromosomes? - n Ans✔ Telophase, the phase in which the spindle dissolves and new membranes and nucleoli form, leading to two new cells Qs Which names a final step in protein synthesis? - n Ans✔ Amino acid bonds Qs What are the steps of protein synthesis? - n Ans✔ Coded info from DNA is translated into a finished protein. First DNA unzips and RNA nucleotides bond with bases on each unzipped segment, forming messenger RNA. Then messenger RNA leaves the nucleus and attaches to a ribosome in the cytoplasm. Transfer RNA moves into position along messenger RNA, and the amino acids attached to the transfer RNA molecules bond forming the protein. Qs Foods with high salt content do not have to be refrigerated. What natural process prevents these foods from spoiling? - n Ans✔ Osmosis Qs
What is necessary for active transport through a membrane to take place? - n Ans✔ ATP Qs What are enzymes made from? - n Ans✔ Proteins Qs What is an example of a gymnosperm? - n Ans✔ Red cedar Qs What is a symbiotic relationship in which one organism benefits and the other is not affected? - n Ans✔ Commensalism Qs Dogs are part of a larger animal group, the Carnivora. What classification is this? - n Ans✔ Order Qs What are saturated fats saturated with? - n
ADP, phosphate, and glucose not water Qs Which one would have the least energy efficiency in nutrient consumption? Cow caterpillar coyote cricket - n Ans✔ Coyote because the greatest energy content is at the base of the energy pyramid. A coyote being a secondary consumer is higher up the energy chain than any of the other choices Qs How do green plants use nitrates in the nitrogen cycle? - n Ans✔ To synthesize proteins. A nitrate is a nitrogen containing material found in soil. Green plants take in nitrates through their roots and use them to make amino acids, the building blocks of proteins Qs Which color of light is least effective at driving photosynthesis? - n Ans✔ Green Qs Which might be described as a core of nucleic acid surrounded by a protein coat? - n Ans✔ Virus Qs
In contrast to triglycerides phospholipids are lacking what component? - n Ans✔ Fatty acid Qs Which phase is the phase where DNA is replicated? - n Ans✔ S Phase Qs What is the growth phase? - n Ans✔ G 1 Qs What is the second growth phase where division occurs? - n Ans✔ G Qs
