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Questions in biology

[Answered] Which of the following forest management practices is best for reestablishing areas of forest? A. shelterwood cutting B. even-aged management C. reforestation D. uneven-aged management

[Answered] The final electron acceptor of aerobic cellular respiration is: A. $CO _2$ B. NADH C. oxygen D. water E. $FADH _2$

[Answered] The table displays the number of butterflies collected in a sample over three years. What inferences can be made from the samples taken on butterfly populations? Select three choices. | | Year 1 | Year 2 | Year 3 | | -------------------- | ------ | ------ | ------ | | Zebra Swallowtail | 21 | 10 | 10 | | Viceroy | 3 | 4 | 3 | | Painted Lady | 2 | 0 | 16 | | Monarch | 82 | 52 | 57 | A. The average number of monarchs over all three samples is less than the number of monarchs counted in year 3. B. The Viceroy population remained fairly steady over the three years recorded. C. The average number of Zebra Swallowtails over all three samples will be less than the number recorded in year 1. D. If a population is increasing over time, the average will be less than the most recent count. E. There was a mistake in the sample for year 3 as the Painted Ladies were extinct in year?

[Answered] In reference to the movement of molecules across a membrane, what is the difference between diffusion and passive transport?

[Answered] Which of the following provides a genomic-based, probabilistic assessment of identity? A. None of the answers is correct. B. biometrics C. DNA phenotyping D. dactylography

[Answered] Which substance carries energy to the Calvin cycle? A. NADPH B. ADP C. 02 D. H₂O

[Answered] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Answered] (b) (i) Explain the term ruminant as used in animal production. (ii) State one function each of the following organs in the digestive system of ruminants: (a) rumen (B) omasum (y) abomasum (c) (i) Distinguish between potential energy and kinetic energy. (ii) Calculate the kinetic energy of a car of mass 1.0×103kg moving with a velocity of 108.0km/h. (d). (i) Mention two greenhouse gases (ii) state three effects of greenhouse gases on climate

[Answered] Enzymes are A. monosaccharides B. proteins C. amino acids D. lipids

[Answered] Which form of energy is an input for photosynthesis? A. Nuclear energy B. Mechanical energy C. Light energy D. Electrical energy