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Questions in biology

[Homework Help] The smallest structural unit in spongy bone: A. Osteon B. Periosteum C. Lamella D. Trabeculae

[Homework Help] Threadlike structures of DNA molecules are called

[Homework Help] Which describes a condition of the neritic zone? A. few organisms B. ample sunlight C. changing salinity D. frigid temperatures

[Homework Help] A population of pigs lives on an island together with burrowing termites. Pigs that have the longest snouts tend to survive more frequently than those with shorter snouts. Over time, most of the pig population is made up of individuals that have very long snouts. This is an example of which type of selection? A. directional selection B. disruptive selection C. stabilizing selection D. ecosystem selection

[Homework Help] Which part of the scientific method is a proposed answer to the question? A. hypothesis B. experiment C. results D. observation

[Homework Help] After forming a hypothesis, what is the next step in the scientific process? A. analyze data B. ask a question C. design an experiment D. draw a conclusion

[Homework Help] What are the constituents of soil? Classify them as biotic and abiotic constituents.

[Homework Help] Runoff is water that collects on Earth's surface after rainfall and eventually flows into larger bodies of water. Which of the following properties of water accounts for the conclusion that runoff often contains fertilizers, pesticides, and other chemicals that farmers have applied to their fields? A. Water has a high specific heat. B. Water is an excellent and versatile solvent. C. Water has strong cohesion. D. Water has a high surface tension.

[Homework Help] What is the function of the frontal lobe? Check all that apply. Sight Smell Speech Sound Motor Skills Balance Reasoning Memory Problem Solving Perception of Stimuli Blood Pressure Orientation Coordination Emotions Breathing

[Homework Help] Most strains of Staphylococcus aureus produce the exoenzyme ____________, which exploits the natural mechanism of blood clotting to evade the immune system.