When designing a building for passive solar heating in the northeast Ohio, which direction should the windows face to absorb the most energy from the winter sun?
A. east
B. west
C. north
D. south
E. northeast
Ans: D. south
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While lying awake in bed, you stare at your ceiling, watching a faint sparkling, shimmering movement in the pitch darkness around you. What causes this phenomenon in the absence of visible light?
a. Myopia makes near infrared light perceivable. b. The cosmic microwave background is faintly visible. c. Tonic activity generates illusory visual activity. d. Degeneration of the optic nerve creates false images.
In transcription,
a. several amino acids are assembled by the messenger RNA molecules at one time. b. a special sequence called a promoter is necessary for transcription to begin. c. certain polypeptide sequences are governed by one ribosome, whereas other sequences are produced by multiple ribosomes. d. the transfer RNA molecules arrange the messenger RNA codons into the appropriate sequence. e. all of these occur.
Which of the following STDs are preventable through the use of a vaccine?
A. hepatitis A and HIV B. syphilis and vaginal infections C. HIV and gonorrhea D. hepatitis A and B E. hepatitis B and chlamydia
The out-of-Africa hypothesis (replacement model) of human evolution proposes that Homo sapiens evolved from
What will be an ideal response?