Ultimate Biology Study Guide - Questions & Answers

Pedigree analysis is often used to determine mode of inheritance (dominant or recessive, for example). Be sure to read the "Tips for Pedigree Analysis" in Figure 14.15 in your text. Consider the following pedigree for the trait albinism (lack of skin pigmentation) in three generations of a family. (Solid symbols represent individuals with albinism.) Complete the unlabeled pedigree by indicating the genotypes for all involved.
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Figure 1 shows a model of the endocrine signaling pathway that regulates ovulation. Which of the following observations would provide evidence of a positive feedback mechanism in this system?
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Based on the model of eukaryotic cell cycle regulation shown in the figure, which of the following best describes the effect of a drug that blocks the production of the mitotic cyclin?
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Passive transport is the movement of molecules across the cell membrane without requiring an input of cellular energy. identify which of these options are examples of passive transport.a. do not require cellular energy to allow molecules to pass through the cell membrane.b. do not require cellular energy because the kinetic energy of the molecules' movement will drive the movement down the concentration gradient.c. do not require cellular energy because the molecules are small enough to fit through the membrane.d. All of the above.e. a and bf. None of the above.
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Place the events that control the progression of cells through the G/S checkpoint of the cell cycle in order. First event Last event Cyclins D and E Inactivated RB releases bind CDK proteins. active E2F protein. Cyclin-CDK complexes E2F transcribes genes required for DNA replicat phosphorylate RB proteins.
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An ecosystem is unlikely to be limited by the supply of _____ because it is obtained from the air. (Concept 55.4)carbonnitrogencalciumwaterphosphorus
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Which list correctly identifies characteristics that protists share with animals?answer choicesFGHJ
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winds form when air moves from a low-pressure region to a high-pressure regiontrue or false
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Although the Venus flytrap uses its prey to obtain certain molecules that it needs, it is still classified as a producer because
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19. As a fertilized egg divides, the cells differentiate because they - contain a lipid bilayer
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s this a valid statement? if flipper is a dolphin, then flipper is a mammal. flipper is a dolphin. so flipper is a mammal.
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be able to identify a food chain within a food web. what would happen to a food chain if a limiting factor changed (happened)?
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long-term potentiation enhances the release of which neurotransmitter into the synaptic cleft, resulting in enhanced learning?
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which autonomic ganglion, located anterior to the ear, receives parasympathetic axons from the glossopharyngeal nerve (cn ix)?
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describe the three steps that result in lymph movement facilitated by muscular pumping (valves maintain flow in one direction)
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what is the key feature of a quantitative trait? give 3 examples. how are these traits described within groups of individuals?
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describe the histology, tissue composition, and general function(s) of each of the four layers of the alimentary canal.
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explain why the large numbers of atp and nadph molecules used during the calvin cycle are consistent with the high value of glucose as an energy source.
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what is the correct order of steps for an action potential, beginning with the neuron membrane potential at rest and ending with the neuron membrane potential restored to rest?
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the n u r s e knows that which organ is primarily responsible for maintaining fluid volume and osmolality? a. liver b. kidneys c. blood vessels d. heart
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2017 saw two major hurricanes move through the caribbean, hurricane irma and hurricane maria, both of which were category 5 hurricanes. the force of the winds from the hurricanes stripped fruit trees bare of their leaves and fruits. after a major stress event like this, it can take two or more years before the trees produce fruit again. which population would most likely experience genetic drift as a result of a genetic bottleneck after a hurricane?
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how does neural transmission compare to endocrine signal transmission? (2 points) hormones are chemicals from endocrine glands, and neurotransmitters are chemical signals from neurons. hormones are electric impulses sent from endocrine glands, and action potentials are electric signals sent through neurons. endocrine glands and neurons both send their messages through the bloodstream. endocrine glands and neurons both use electrical signals.
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speciation, or the formation of new species, is group of answer choices necessary for natural selection and adaptation. an event that has occurred only a few times in the history of the planet. a form of microevolution. responsible for the diversity of life.
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Natural selection occurs when there is nonrandom elimination of genotypes from a population due to differences in viability or reproductive success. True O False
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