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Questions in biology

[Homework Help] Why do we need to segregate garbage that could be decomposed from those that do not decompose?

[Homework Help] How do humans get the nitrogen they need? A. By breathing B. By eating plants C. Through cellular respiration D. Through photosynthesis

[Homework Help] What is the main organ of a skeletal, muscular, cardiovascular, respiratory, and digestive system?

[Homework Help] What technological advancement was necessary before scientists could begin to observe cells? A. invention of the microscope B. invention of the balance C. invention of the telescope D. invention of the thermometer

[Homework Help] Why is surface area in the small intestine so important? A) Absorption of nutrients B) Mechanical digestion of food C) Chemical digestion of food

[Homework Help] A. Fill in the blanks by choosing suitable words. Options: microorganisms, non-living, photosynthesis, nonrenewable 1. Environment includes living and .......... components. 2. Plants, animals and .......... are living components of environment. 3. Sunlight, air, water and .......... are nonliving components of environment.

[Homework Help] 3.1. State one characteristic of the deer mouse which allows it to avoid predators. (1) 3.2. Using natural selection, explain how the inheritance of light coloured fur allele allowed the deer mice to survive in the light sand dunes. (6) 3.3. Tabulate two differences between Lamarck's and Darwin's theories. (5)

[Homework Help] Explain the relationship between electron transport and oxidative phosphorylation. How do uncoupling proteins "uncouple" this relationship in brown adipose tissue? Match the terms in the left column to the appropriate blanks in the sentences on the right. Terms can be used once, more than once, or not at all. Terms: the electron transport chain reduction potential inner membrane proton gradient electron gradient oxidative phosphorylation protons electrons complex IV Sentences: The electron transport chain is possible via a(n) __________ that is established in __________. Uncoupling proteins disrupt this relationship by allowing __________ to freely pass through the __________, thus reducing the __________ and the production of ATP by __________.

[Homework Help] Does fertilization happen in plants? A) Yes, for sexual reproduction. B) Always, for both sexual and asexual modes of reproduction. C) No, fertilization only happens in animals.

[Homework Help] Procedure: 1. What I Know: Write two sentences about what you already know or think you know about plant cells.