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In the food chain below, vultures represent grass C> cow C> wolf C> vulture:
In the food chain below, vultures represent grass C> cow C> wolf C> vulture:A . ScavengersB . Primary carnivoresC . DetritivoresD . Secondary consumersE . HerbivoresView AnswerAnswer: A Explanation: Vultures eat carrion, or dead animals, so they are considered scavengers. Detritivores are heterotrophs that eat decomposing organic matter such as...
For vision, ___ must be converted to _____ in the cells of the retina.
For vision, ___ must be converted to _____ in the cells of the retina. A. vitamin C, retinal B. vitamin E, biotin C. vitamin A, retinal D. vitamin A, biotinView AnswerAnswer: C Explanation: Vitamin A is a precursor of retinal, which is the chemical compound that enables animals to see....
Which of the following is NOT made by the pituitary gland?
Which of the following is NOT made by the pituitary gland?A . ACTHB . ADHC . FSHD . LHView AnswerAnswer: B Explanation: The list of hormones made by the pituitary gland can be recalled with the mnemonic FLATPOG, signifying: FSH, LH, ACTH, TSH, GH, MSH (melanocyte stimulating hormone), and prolactin....
In ferns, the joining of egg and sperm produces a zygote, which will grow into the:
In ferns, the joining of egg and sperm produces a zygote, which will grow into the:A . GametophyteB . SporophyteC . SeedlingD . SporangiumE . SporeView AnswerAnswer: B Explanation: In ferns, the mature diploid plant is called a sporophyte. Sporophytes undergo meiosis to produce spores, which develop into gametophytes, which...
Which of the following would increase the pH of the blood?
Which of the following would increase the pH of the blood?A . severe damage to the kidneysB . the digestion of a big mealC . an increase in anaerobic respirationD . an increase of the blood pCO2View AnswerAnswer: B Explanation: During the digestion of a large meal, parietal cells in...
The T-tubules transmit an action potential, causing the opening of ____ channels in the ____.
The T-tubules transmit an action potential, causing the opening of ____ channels in the ____.A . Na+, SarcoplasmB . Ca2+, Sarcoplasmic ReticulumC . Na+, Sarcoplasmic ReticulumD . Ca2+, SarcoplasmView AnswerAnswer: B Explanation: The T-tubules conduct action potentials that cause channels to open on the surface of the sarcoplasmic reticulum. The...
Which of the following lacks mitochondria?
Which of the following lacks mitochondria?A . fungiB . protozoanC . bacteriaD . amoebaView AnswerAnswer: C Explanation: Unlike eukaryotes, prokaryotes do not possess organelles (excluding the ribosomes). Bacteria are categorized as prokaryotic and consequently do not possess a mitochondria.
Blood flows from the mitral valve to the:
Blood flows from the mitral valve to the:A . left atriumB . aortaC . right ventricleD . left ventricleView AnswerAnswer: D Explanation: The left atrium connects to the left ventricle by way of the mitral valve. The left ventricle connects to the aorta by way of the aortic valve. Blood...
The oxidation of NADH occurs in which of the following?
The oxidation of NADH occurs in which of the following?A . glycolysisB . TCA cycleC . ETCD . photosynthesisView AnswerAnswer: C Explanation: NADH is the reduced form of nicotinamide adenine dinucleotide and contains an electron that can be donated in the ETC. In the ETC, NADH is oxidized to NAD+.
Which of the following is not secreted by the hypothalamus?
Which of the following is not secreted by the hypothalamus?A . glucocorticoidsB . GnRHC . DopamineD . GHIHView AnswerAnswer: A Explanation: Glucocorticoids are steroids synthesized and secreted by the adrenal cortex not the hypothalamus.
