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Questions in biology

📝 Answered - A cell of an organism has four chromosomes. It undergoes a process at the end of which two daughter cells are produced. Each daughter cell has four chromosomes. Which process is described? A. fertilization B. meiosis C. mitosis

📝 Answered - Organisms that are not autotrophs A. Get energy from inorganic molecules B. Can survive without energy C. Get energy from sunlight D. Must consume other organisms to get energy

📝 Answered - Which structures are used by the cell for storing and maintaining biological information that will be passed to daughter cells when the cell divides? A. Nucleus, chromatin B. Nucleolus, ribosome C. Vacuole, lysosome D. Golgi apparatus, endoplasmic reticulum

📝 Answered - Each enzyme produced by the body is specific, meaning it is only able to catalyze a reaction with a certain substrate. What causes an enzyme to be specific? A. The enzyme's surface folds are complementary to the substrate's surface folds. B. The enzyme has surface receptors that can recognize specific sequences of DNA. C. The enzyme is made out of the same type of molecule as its substrate. D. The enzyme is only produced in certain conditions.

📝 Answered - Fish are not able to regulate their body temperature by producing heat. How could a fish adjust its body temperature if it were too warm? A. Swimming into cooler water B. Evaporating water from its skin C. Expelling water from its body D. Speeding up its level of activity

📝 Answered - Which is the correct sequence of events in mitosis? A. Prophase, metaphase, anaphase, and telophase B. Metaphase, prophase, anaphase, and telophase C. Anaphase, metaphase, prophase, and telophase

📝 Answered - Explain why visible structures, such as fins, beaks, and tails, look so different on different organisms.

📝 Answered - If a member of each of the seven animal groups fell into water, which groups would have the highest chance of survival? A. Fish and mammal B. Fish and amphibian C. Fish and reptile D. Fish and bird

📝 Answered - Explain why photosynthesis could have occurred in the Earth's early atmosphere, which did not contain oxygen, and how this process eventually affected the evolution of other organisms.

📝 Answered - Mitochondria are organelles found in both plant and animal cells. These organelles are rod-shaped with cristae and highly folded inner membranes. Mitochondria are responsible for: A. cellular respiration B. waste disposal C. transporting materials D. storage of genetic information