Which kind of T cells regulate the immune response by producing stimulatory lymphokines?

A. cytotoxic T cells (TC)
B. suppressor T cells (TS)
C. helper T cells (TH)
D. memory T cells (TM)


Answer: C

Biology & Microbiology

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You discover a fungus that makes both sexual and asexual spores. The sexual spores are made in groups of eight within a structure that bursts open to release the spores. The structures containing sexual spores are found within a multicellular structure that is about five inches tall. Into which group should you classify this fungus?

a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota

Biology & Microbiology

A horizontal stem modified to penetrate the substrate and anchor a plant is a ____

a. vascular system b. protonema c. sporangium d. rhizome e. shoot system

Biology & Microbiology

Gingivitis

A. is primarily caused by normal anaerobic biota. B. may involve archaeal species. C. involves the formation of calculus and plaque. D. involves a crevice in the gum along the tooth. E. All of the choices are correct.

Biology & Microbiology

Proteins that speed up reactions are known as

1.salts 2.buffers 3.monomers 4.polymers 5.enzymes

Biology & Microbiology