You are observing a population of lizards when you notice that the number of adults has increased and is higher than previously observed. One explanation for such an observation would include
A) reduction in death rate.
B) increased immigration.
C) increased emigration.
D) decreased emigration.
E) increased birth rate.
Ans: B) increased immigration.
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If your mother has cystic fibrosis, which is caused by a recessive allele, the odds of you having cystic fibrosis are
____.
a. 1/4 b. 1/2 c. 3/4 d. 1 e. impossible to determine without knowing your father’s genotype
Which diagnostic test(s) would you recommend for a patient that you suspect is showing signs of early stage Charcot-Marie-Tooth disease? (Check all that apply.)
_____ Culture and protein expression profile of oligodendrocytes _____ EKG to look for rhythmic abnormalities _____ EMG to test muscle responses _____ fMRI of the frontal lobe of the brain _____ fMRI of the rACC of the brain _____ Genetic testing for mutations in the PMP22 and MFN2 genes _____ Nerve biopsy to look for signs of demyelination _____ Nerve conduction study to test the rate of impulse conduction Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content/Choose Answer · What do you already know about components of the nervous system? What other information is related to the question? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following statements about incinerators is FALSE?
A.Incinerators reduce the volume of material that needs to be landfilled. B.Incinerators are expensive to build and operate. C.The burning of waste reduces the toxic and hazardous materials in the waste stream, as the heat neutralizes the toxins. D.Burning solid waste in incinerators can be used to produce energy.
A polysome is
a. one of the units of a ribosome. b. the nuclear organelle that synthesizes RNA. c. an organelle that functions similarly to a ribosome during meiosis. d. the two units of a ribosome considered together. e. an mRNA molecule with several ribosomes attached.