Which of these characteristics is shared by algae and seed plants?
a) chloroplasts
b) roots and shoots
c) pollen
d) embryo development within gametangia
e) vascular tissue
Ans: a) chloroplasts
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Which of the following groups is suspected of causing climate change?
A. fossil fuel and hydropower usage B. erosion, deforestation, pollution, and desertification C. overfishing and hydropower usage D. ocean acidification and desertification E. fossil fuel usage, deforestation, and agriculture
Communication between animal cells is facilitated by
A) tight junctions. B) gap junctions. C) adhesive junctions. D) plasmodesmata. E) gap and adhesive junctions.
The presence of (bacillus/clue/streptococcal) cells is an important aspect of the diagnosis of bacterial vaginosis
What will be an ideal response?
A(n) ________ increases the rate of a reaction without being permanently altered by the reaction.
A. reactant B. rate increaser C. catalyst D. catalyzer