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Questions in biology

📝 Answered - A person develops a disease in which her immune system attacks her own connective tissue. Where would this disease have the greatest impact? A. Tendons and cartilage B. Tendons and the epidermis C. Muscles and the spinal cord D. Muscles and bone

📝 Answered - Which of the following must happen before the cell can go through mitosis? A. The cytoplasm must divide. B. The cell must copy its DNA. C. The spindle fibers must break down. D. The sister chromatids must separate.

📝 Answered - During photosynthesis, plants capture light energy from the Sun to break weak bonds in reactants, such as carbon dioxide and water, and form carbon-containing molecules, such as glucose. The carbon-containing molecules can then be used to: 1. Build plant structures. 2. Store energy for later use. 3. Fuel plant growth and development.

📝 Answered - Which of the following statements is true? A. Viruses are much bigger than bacteria. B. Viruses are cells with RNA or DNA. C. Viruses are bundles of genetic material enclosed in a capsid. D. Both viruses and bacteria are living organisms.

📝 Answered - Topic: Bioactive Detergents 1) What type of enzymes do you expect to be present in the detergent? 2) Suggest, with reasons, what would be the best conditions of use to obtain maximum cleaning power from the bioactive detergents.

📝 Answered - When a parent cell makes several nuclei and divides to make several daughter cells, it is called _____. A. meiosis B. mitosis C. binary fission D. multiple fission

📝 Answered - Environmental factors can have various effects on ecosystems. In August 2005, Hurricane Katrina caused significant damage in several states along the Gulf Coast, including Alabama, Mississippi, and Louisiana. Thousands of people were evacuated from their homes due to flooding and other damage caused by the storm. What environmental impact would Hurricane Katrina not have caused? A. Early onset of spring B. Change in marine ecosystems C. Change in animal migration D. Change in habitats

📝 Answered - What is an important function of mitochondria? A. Converting chemical energy from ATP into chemical energy in glucose products B. Converting chemical energy from glucose products into chemical energy in ATP C. Converting energy from sunlight into chemical energy in glucose products D. Converting energy from sunlight into chemical energy in ATP

📝 Answered - What is the function of a vesicle, sometimes called a vacuole, in an animal cell? A. It stores substances such as food, water, and wastes. B. It is the location where photosynthesis occurs. C. It generates all of the energy for the cell. D. It engulfs pathogens that have invaded the cell.

📝 Answered - Which statement is true for single-celled organisms? A. They are often harmless. B. They always cause disease. C. They only live inside humans. D. They reproduce in a complicated process.