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Questions in biology

📝 Answered - Which of the following best characterizes a night of sleep? A. We begin the night in light sleep and end in deep sleep. B. We pass from light sleep to dream sleep to deep sleep. C. Our depth of sleep alternates up and down many times. D. We alternate from the waking state to dream sleep about six times.

📝 Answered - A group of specialized cells working together to perform a function is a(n) A. Organ system B. Organ C. Cell D. Tissue

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

📝 Answered - How many NADH are produced by glycolysis? A. 4 B. 3 C. 2 D. 5 E. 1

📝 Answered - Review the cellular targets of physical and chemical antimicrobial agents by completing each sentence. 1. An antimicrobial agent's adverse effect on cells is known as its mode of action. 2. Such antimicrobials exhibit a range of cellular targets, the (Click to select) against the widest range of microbes and the (Click to select) cellular targets and microbial types they are effective against. 3. Potential cellular targets of various physical and chemical forms of antimicrobials include the (Click to select) whose synthesis can be blocked by these agents or whose structure can be altered as well. 4. Another potential target is the (Click to select) agents resulting in a loss of (Click to select). 5. Physical and chemical agents (Click to select) activity, protein function through (Click to select) native state, and finally disrupting the synthesis or structure of (Click to select). Options: minimum inhibitory concentration, carbohydrate, cell membrane, cell wall, least, mitochondrion, mode of action, most, nucleic acids, protein, whose surface tension can be reduced by various microbicidal, synthesis through disruption of ribosome

📝 Answered - What symptoms do you think a peptic ulcer would cause? Why do you think these symptoms would occur?

📝 Answered - Which flow chart correctly organizes the structures of heredity, from least to most complex? A. codon → gene → DNA → chromosome B. gene → chromosome → codon → DNA C. DNA → codon → chromosome → gene D. chromosome → DNA → gene → codon

📝 Answered - Which two animals use echolocation? A. bats and humans B. bats and dolphins C. dolphins and humans D. dolphins and butterflies

📝 Answered - Which of the following is found in the 'rungs' of a DNA strand? A. Uracil B. Deoxy Ribose C. Phosphate D. Thymine

📝 Answered - The superficial layer of epidermal cells are: A. Well nourished B. Cuboidal C. Highly mitotic D. Squamous Why does the elevated body temperature seen with a fever develop? A. Because the set point for body temperature is decreased. B. Because the hypothalamus stops monitoring body temperature. C. Because infection destroys the hypothalamus and, thus, the control center for body temperature. D. Because the set point for body temperature becomes elevated.