Which of the following bacteria lack a cell wall?
A. Treponema pallidum
B. Mycobacterium tuberculosis
C. Staphylococcus aureus
D. Mycoplasma pneumoniae
D
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Thealpha helix was described by
a. Pauling. b. Hershey and Chase. c. Griffith. d. Watson and Crick. e. Avery.
It appears that Homo sapiens moved from
a. India to central Asia to China and Siberia to southeast Asia. b. southeast Asia to China and Siberia to India to central Asia. c. central Asia to India to southeast Asia and southern China. d. China and Siberia to the Americas to India to southeast Asia. e. southeast Asia to China and Siberia to the Americas to India.
Which one of the following risks is increased by ART?
A. Ectopic pregnancies B. Low birth weight C. Multiple births D. Passing on male infertility to sons E. All of these
An organism that uses light for energy and carbon dioxide as a carbon source is a
A) Chemoorganoheterotroph B) Chemolithoautotroph C) Photolithoautotroph D) None of the above