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Questions in biology

[Terjawab] 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.

[Terjawab] 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.

[Terjawab] 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

[Terjawab] 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

[Terjawab] 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

[Terjawab] 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.

[Terjawab] 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.

[Terjawab] Carbon and oxygen are helpful in metabolic studies because: Select one: A. They are inexpensive elements. B. They are incorporated into organic material and commonly found in living things. C. Scientists know a lot about these two elements. D. They are plentiful in nature.

[Terjawab] 1. Enzymes are important because they: A. contain water B. speed up chemical reactions C. contain genetic material D. help the cell maintain its shape 2. Which term refers to the diffusion of water through a membrane? A. osmosis B. engulfing C. active transport D. facilitated transport

[Terjawab] Lamarck proposed two ideas to explain: A. how organisms change through time. B. the principles of geology. C. the age of the Earth. D. the slow movement of the Earth's tectonic plates.