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Questions in biology

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

📝 Answered - Which equation shows how cells use the energy stored in an energy carrier? A. [tex]$NADPH \rightarrow NADP ^{+}+ H ^{+}$[/tex] B. [tex]$NADP ^{+}+ P \rightarrow$ ATP[/tex] C. [tex]$ATP \rightarrow ADP + NADPH$[/tex] D. [tex]$ADP + H ^{+} \rightarrow ATP$[/tex]

📝 Answered - Elevated portions of the cerebral cortex are called a. sulci b. plexuses c. gyri d. ventricles

📝 Answered - Which structure is found in the cytoplasm of a prokaryotic cell, but is not found in the cytoplasm of a eukaryotic cell? A. DNA B. ribosomes C. nucleus D. mitochondria

📝 Answered - This table lists examples of plants. \begin{tabular}{|l|l|l|}\hline \multicolumn{3}{|c|}{Plant Classifications} \\\hline & Gymnosperms & Ang \\\hline A & Flowering plants, grains, and fruit trees & Conifers, cy \\\hline B & Grains, flowering plants, and gingkos & Fruit trees, c \\\hline C & Fruit trees, cycads, and grains & Conifers, gingko \\\hline D & Conifers, cycads, and gingkos & Flowering plants, \\\hline\\\end{tabular} Which row ($A, B, C$, or D) in the table accurately categorizes the plants as gymnosperms?

📝 Answered - Which one of the following statements is correct about the nervous system? A. It takes air into and out of the body to supply oxygen and remove carbon dioxide. B. It uses blood vessels to transport blood around the body through the heart. C. It receives and processes sensory information from internal and external parts of the body. D. It consists of cells that produce and secrete chemicals into the bloodstream via a duct. What is the best justification for the role of voltage-gated ion channels in nerve impulse transmission? A. They actively respond to membrane potential changes, leading to depolarization. B. They block the ions movement across the membrane to sustain the neuron. C. They produce energy when the sodium ions move to the inside of the axon. D. They allow potassium ions to diffuse to the inside of the axon, forming repolarization.

📝 Answered - Which process makes it possible for all the major organs of the body to be formed by week 10 of human development? A. growth B. fertilization C. self-renewal D. differentiation

📝 Answered - The correct order of the steps of skin healing is: A. collagen deposition, blood clot, scab formation, inflammation, scar B. blood clot, collagen deposition, inflammation, scab formation, scar C. blood clot and inflammation, scab formation, collagen deposition, scar D. blood clot, scab formation, scar, collagen deposition, inflammation

📝 Answered - How will a healthy individual's ATP production change during an eight-hour fast? A. The individual's ATP production will not change significantly. B. The individual's ATP production will decrease significantly. C. The individual's ATP production will increase significantly.

📝 Answered - Scientists study salamanders and their ability to regenerate lost legs and tails. What additional information is essential for scientists to understand in order to apply this ability to humans who have lost limbs? A. how quickly the body parts regenerate B. how similar salamanders are to humans C. which body parts are most often lost D. which genes control regeneration