Which organism is a flagellated protozoan that has a flat ventral side and is able to attach firmly to a human's intestinal wall?
a) Giardia lamblia
b) Entamoeba histolytica
c) Cyclospora cayetanensis
d) Cryptosporidium hominis
Ans: a) Giardia lamblia
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An insecticidal protein has been discovered in a bacterium known as
A. Escherichia coli. B. Agrobacterium tumefaciens. C. Bacillus thuringiensis. D. Aspergillus sp.
All of the following processes are associated with photosystem I EXCEPT
a. ATP synthesis. b. NADPH synthesis. c. cyclic electron flow. d. accepting electrons flowing from the electron transport chain. e. splitting of water.
A(n) ________ is a substance that accepts hydrogen ions or, when it dissociates in water, will give off hydroxide ions
Fill in the blank(s) with correct word
Which of the following characterizes the apoplastic pathways in the root?
a. the water moves through living regions but in the endodermis it must pass through the cell wall b. the water moves through nonliving regions but in the endodermis it must pass through the cell wall c. the water moves through living regions but in the endodermis it must pass through the cytoplasm d. the water moves through nonliving regions but in the endodermis it must pass through the cytoplasm