What structure acts as a selective barrier, regulating the traffic of materials into and out of the cell?
a. nuclear envelope
b. endomembrane system
c. cytoskeleton
d. extracellular matrix
e. plasma membrane
Ans: e. plasma membrane
Biology & Microbiology
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Which of the following genera is photosynthetic using bacteriochlorophyll g?
A. Heliobacterium B. Clostridium C. Veillonella D. Caryophanon
Biology & Microbiology
Which group of organisms is bilateral, has a pseudocoelom and a cuticle?
a. Platyhelminthes b. Nematoda c. Porifera d. Annelids e. Planarians
Biology & Microbiology
In a nutritionally balanced diet, the source of essential fatty acids is ________.
a) carbohydrates b) proteins c) vitamins and minerals d) lipids
Biology & Microbiology
mutation
What will be an ideal response?
Biology & Microbiology