HiSET Science Domain 1: Life SIience Welcome to your HiSET Science Domain 1: Life SIience 1. HiSET Science: Life Science Which of the following best describes the process of glycolysis? The synthesis of sugar molecules from smaller precursors The breakdown of glucose into two molecules of pyruvate The conversion of ADP to ATP using sunlight The process by which amino acids are synthesized None 2. HiSET Science: Life Science In a eukaryotic cell, where does the Krebs cycle occur? Cytoplasm Mitochondrial matrix Mitochondrial intermembrane space Nucleus None 3. HiSET Science: Life Science Which of the following is a characteristic feature of chordates at some point in their life cycle? Presence of a notochord Ability to undergo photosynthesis Presence of jointed appendages Absence of a digestive system None 4. HiSET Science: Life Science What is the role of ribosomes in a cell? Cellular respiration Protein synthesis DNA replication Lipid synthesis None 5. HiSET Science: Life Science In the context of genetics, what does the term 'heterozygous' mean? Having two identical alleles for a particular gene Having two different alleles for a particular gene An organism with no alleles for a given gene Having mutated alleles for a particular gene None 6. HiSET Science: Life Science What is the primary function of the xylem in plants? Transport of nutrients Transport of water and dissolved minerals from roots to leaves Photosynthesis Growth and development None 7. HiSET Science: Life Science Which cellular organelle is responsible for packaging and distributing proteins and lipids? Mitochondria Ribosomes Golgi apparatus Nucleus None 8. HiSET Science: Life Science Which of the following best describes the function of enzymes in biological systems? To decrease the activation energy of chemical reactions To increase the activation energy of chemical reactions To act as structural components of cell membranes To store genetic information None 9. HiSET Science: Life Science In a DNA molecule, which base pair matches are correct? Adenine with Guanine, Cytosine with Thymine Adenine with Thymine, Cytosine with Guanine Adenine with Cytosine, Guanine with Thymine Adenine with Uracil, Cytosine with Thymine None 10. HiSET Science: Life Science Which process is directly responsible for the variation seen in the offspring produced through sexual reproduction? Mitosis Meiosis Binary fission Budding None 11. HiSET Science: Life Science What is an allele? A type of protein that influences trait expression A version of a gene that determines a specific trait A cellular structure that contains DNA An organism's observable characteristics None 12. HiSET Science: Life Science In an ecosystem, which component is considered a producer? Carnivores Herbivores Plants Decomposers None 13. HiSET Science: Life Science Which of the following best explains the role of ATP in cellular processes? It acts as the cell's main energy currency It serves as the genetic material of the cell It is the primary component of cellular membranes It functions as the main structural protein None 14. HiSET Science: Life Science Which biological molecule is primarily responsible for encoding, transmitting, and expressing genetic information? Proteins Carbohydrates DNA Lipids None 15. HiSET Science: Life Science In the Linnaean system of classification, which rank follows directly after Order? Family Genus Species Class None 16. HiSET Science: Life Science What is the main difference between prokaryotic and eukaryotic cells? The presence of a cell wall in eukaryotic cells The absence of genetic material in prokaryotic cells The presence of a nucleus in eukaryotic cells The absence of ribosomes in prokaryotic cells None 17. HiSET Science: Life Science What is the significance of Mendel's law of independent assortment in genetics? It describes how traits are inherited independently of each other. It explains the uniformity of traits among offspring. It outlines how alleles are duplicated during cell division. It details the process of DNA replication. None 18. HiSET Science: Life Science In biology, what is the main function of the lysosome? Protein synthesis Energy production Breakdown of cellular waste DNA replication None 19. HiSET Science: Life Science Which of the following best describes the phenomenon of osmosis? The movement of solutes from an area of lower concentration to an area of higher concentration The active transport of ions across a membrane The movement of water across a semipermeable membrane from an area of lower solute concentration to higher The synthesis of ATP using the energy derived from the flow of ions across a membrane None 20. HiSET Science: Life Science What is the primary role of chlorophyll in photosynthesis? It absorbs light energy and converts it into chemical energy. It facilitates the breakdown of glucose molecules. It acts as a catalyst in the Calvin cycle. It transports electrons during cellular respiration. None 21. HiSET Science: Life Science What type of cell junction in animal cells is primarily responsible for preventing the passage of materials between cells? Gap junctions Desmosomes Tight junctions Plasmodesmata None 22. HiSET Science: Life Science Which of the following processes is an example of a catabolic reaction? Photosynthesis Protein synthesis DNA replication Cellular respiration None 23. HiSET Science: Life Science In the context of molecular biology, what is the central dogma? DNA is transcribed to RNA, which is translated to protein. Proteins synthesize RNA, which then creates DNA. RNA replicates itself to form DNA, which then forms proteins. Proteins are degraded into RNA, which then forms DNA. None 24. HiSET Science: Life Science What is the primary function of the smooth endoplasmic reticulum in cells? Protein synthesis Lipid synthesis ATP production DNA replication None 25. HiSET Science: Life Science In genetics, what is a polygenic trait? A trait controlled by a single gene A trait influenced by multiple genes A trait that does not follow Mendelian genetics A trait resulting from environmental influences None 26. HiSET Science: Life Science Which biome is characterized by a layer of permafrost? Tropical rainforest Savannah Tundra Desert None 27. HiSET Science: Life Science In which phase of mitosis do the chromosomes align at the cell's equatorial plane? Prophase Metaphase Anaphase Telophase None 28. HiSET Science: Life Science What is the significance of the Hardy-Weinberg equilibrium in population genetics? It describes how populations evolve over time. It provides a framework for understanding genetic drift. It describes a population not evolving if certain conditions are met. It explains the rate of mutation in a gene pool. None 29. HiSET Science: Life Science In the phosphorus cycle, which reservoir is considered the primary source of phosphorus for terrestrial ecosystems? The atmosphere Rock and soil minerals Ocean sediments Plant biomass None 30. HiSET Science: Life Science What is the role of messenger RNA (mRN in protein synthesis? A) It carries amino acids to the ribosome. It forms the structure of ribosomes. It carries the genetic code from DNA to the ribosome. It catalyzes the formation of peptide bonds. None 1 out of 30 Time is Up! Time's up
