The smallest unit of life is the ?

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The smallest unit of life is the _________.
a) cell
b) organelle
c) macromolecule
d) atom

A dichotomous key is used to?

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A dichotomous key is used to ___________________.
a) locate organisms
b) identify organisms
c) divide organisms
d) interbreed species
e) describe plants
45. The control in an experiment _______________________________________.
a) reduces the experimental errors
b) minimizes experimental inaccuracy
c) allows standard comparison for the experimental group
d) is an additional replicate for statistical purposes
e) makes the experiment invalid

The hydrophilic surface of a membrane faces?

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The hydrophilic surface of a membrane faces:
a) The interior of the cell
b) The interior of the membrane
c) The exterior of the cell
d) Both a) and b) are correct
e) Both a) and c) are correct

Plant cell walls are made of?

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Plant cell walls are made of:
a) Lipids
b) Cellulose
c) Proteins
d) Chitin
e) Glycogen