Which of the following is not normally considered a pathogenic species of Clostridium?

A. C. perfringens
B. C. tetani
C. C. acetobutylicum
D. C. botulinum


Answer: C

Biology & Microbiology

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Which of the following is a basic component of all of the others?

a. cells b. organs c. tissues d. organism e. organ systems

Biology & Microbiology

Which of the following statements is not true concerning hormonal control over the male reproductive system?

A. Luteinizing hormone controls the production of sperm in the seminiferous tubules. B. These hormones are involved in a negative feedback relationship. C. The hypothalamus secretes a hormone called gonadotropin-releasing hormone. D. Follicle-stimulating hormone and luteinizing hormone are present in both males and females. E. The interstitial cells produce testosterone.

Biology & Microbiology

Seed oils are often dehydrogenated and added back into processed foods as partly unsaturated fatty acids. In comparison with the original oil, the new fatty acids have additional double carbon–carbon bonds, replacing what were once single bonds

This process could also be described as _____________. (a) isomerization. (b) oxidation. (c) reduction. (d) protonation.

Biology & Microbiology

Which of the following is an adaptation against

predation?

a. thorns b. camouflage c. mimicry d. tough, chewy leaves e. all of these

Biology & Microbiology