Why are many digestive enzymes produced in an inactive form and then activated in the lumen of the digestive tract?
A. It helps to break down macromolecules(proteins, carbohydrates, nucleic acids, lipids) faster.
B. The temperature of organism changes when food falls into digestive tract, that helps to activate digestive enzymes.
C. Digestive enzyme should have an inactive period, only after that period they could be activated.
D. Digestive enzymes would destroy the cells that produce and secrete them if they were produced in an active form.
Ans: D. Digestive enzymes would destroy the cells that produce and secrete them if they were produced in an active form.
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In _______, the dominant allele can only partially mask the recessive allele.
a) codominance b) incomplete dominance c) simple dominance d) complete dominance
Predict the change in surface area and volume of a spherical cell if the diameter of the cell doubles.
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