Although they are mammals, monotremes lack
A) ovaries in females.
B) nipples.
C) mammary glands.
D) hair.
E) a four-chambered heart.
B
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Endosperm tissue arises by the fusion of a sperm nucleus with two nuclei of the:
A. male gametophyte B. female style C. ovule wall D. female egg E. female gametophyte central cell
Where do the electrons from NADPH go in the Calvin cycle?
a. They are put onto oxygen, just like in cellular respiration. b. They are used to regenerate RuBP from G3P c. They are added to 3PGA. d. They are transferred to rubisco. e. They remain on NADPH to help drive the light reactions
The delay in the initial adaptive immune response to pathogen is largely due to the (inducibility/memory/specificity) of adaptive immunity
What will be an ideal response?
A solution of pH 5 is how many times more acidic that one of pH 7?
A) 0.5 B) 10 C) 2 D) 100