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ddd [48]
3 years ago
12

__________ is indigestible by animals because they lack __________, which is a __________.

Biology
1 answer:
alekssr [168]3 years ago
3 0

Cellulose is indigestible by animals because they lack the enzyme Cellulase.

Cellulose is the polysaccharide which is the main constituent of plant cell wall. It consists of chains of glucose monomers. Animals like human beings lack the enzyme Cellulase which is necessary for the digestion of cellulose.  

Hay and grasses are rich in cellulose and therefore, both are indigestible by human beings. Animals like cows and horses also do not possess the enzyme cellulase, but they harbor microbes which help in the digestion of cellulose.

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1. You are a doctor working at a hospital. You want to test a new drug for cancer patients who are being treated in your hospita
maxonik [38]

Answer:

An experimental group is a group that receives the variable being tested in an experiment. The control group is the group in an experiment that does not receive the variable you are testing.

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Control group, the standard to which comparisons are made in an experiment. ... A typical use of a control group is in an experiment in which the effect of a treatment is unknown and comparisons between the control group and the experimental group are used to measure the effect of the treatment.

The control group would be the group you keep control as you would not change anything about it throughout the course of the experiment. The experimental group you would give the experimental drug to.

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