Ome botanists argue that the entire plant should be considered as a single unit rather than a composite of many individual cells. Which of the following cellular structures cannot be used to support this view?
a. cell wall
b. cell membrane
c. cytosol
d. tonoplast
e. symplast
Answer: d. tonoplast
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Phototrophic organisms in SIP experiments are often observed releasing 14CO2 as measuring activity
Indicate whether the statement is true or false.
Answer the following statements true (T) or false (F)
1. The nervous system of a cnidarian consists of a central ganglion leading into a nerve net. 2. The two body forms of some Radiata is an example of alternation of generations. 3. A medusa and polyp have similar body plans. 4. All Platyhelminthes are parasitic. 5. The disease schistosomiasis is caused by a parasitic trematode.
Dim light causes the pigment ________ in rods to change shape, which causes sodium channels on the photoreceptor cell to close and activate ganglion cells
Fill in the blank(s) with correct word
What method does a human white blood cell employ to engulf a bacterial cell?
a. osmosis b. exocytosis c. pinocytosis d. phagocytosis e. facilitated diffusion