The ancestors of land plants were aquatic algae. Which of the following is not an evolutionary adaptation to life on land?
A) C? photosynthesis
B) a waxy cuticle
C) root hairs
D) xylem and phloem
E) guard cells
Ans: A) C? photosynthesis
Biology & Microbiology
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Which of the following contains bacteriochlorophyll?
A. Bacillus subtilus B. Staphylococcus aureus C. Streptococcus pyogenes D. E. coli E. Chromatium, Thiospirillum, Thidictyon
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When macrophages bind antigens, they secrete
____ to attract more phagocytic cells.
a. more antigens b. MHC c. cytokines d. antibodies e. complement
Biology & Microbiology
Which of the following may result from eating tuna sashimi (raw fish)?
A) botulism B) norovirus infection C) polio D) salmonellosis E) saxitoxin intoxication
Biology & Microbiology
If lithium has an atomic number of 3 then it will have one valence electron.
Answer the following statement true (T) or false (F)
Biology & Microbiology