Which of the following is an organism whose cell(s) lack(s) membrane-bound organelles?
A. nucleolus
B. chromatin
C. eukaryote
D. prokaryote
Ans: D. prokaryote
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On a molecular level, all organisms
a. show no similarities. b. have the same bases in DNA and RNA, the same amino acids in proteins, but use different genetic codes. c. use different means of storing genetic information. d. have the same bases in DNA and RNA, the same amino acids in proteins, and use the same genetic code. e. have the same bases in DNA and RNA, but different amino acids in proteins.
The subjective evidence of disease sensed by the patient is termed a/an ________.
A. sign B. syndrome C. symptom D. inflammation E. pathology
Since all action potentials are identical, the intensity of a sensation depends on:
a. whether a myelinated or unmyelinated neuron has been stimulated. b. the duration of the stimulation. c. whether the neuron stimulated is a pre- or postsynaptic neuron. d. the total number of neurons stimulated and the frequency of their discharge. e. the presence of an EPSP or IPSP, which allows for a graded response
Some people eat more because they have larger ___________ responses to the sight or smell of food.
(a) fasting-phase (b) cephalic-phase (c) absorptive-phase (d) gastric-phase