If the culture is kept in stationary phase for a prolonged period, the cells may die. Why?

a) due to the time taken for doubling of cell number

b) duration of a cell generation is too large, depending mainly on the plant species.

c) stationary phase is forced on the culture by a depletion of the nutrients

d) due to an accumulation of cellular wastes

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#Question id: 4793

#Unit 8. Inheritance Biology

Hypophosphatemia is caused by an X-linked dominant gene in humans. Normal man marries with Hypophosphatemia woman whose father is normal. What will be observation in their child is correct?

a. All daughters affected                                      b. half of their daughters affected

c. All sons affected                                              d. half of their son’s affected

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#Question id: 29456

#Unit 6. System Physiology – Plant

In maize kernels, IAA also appears to be synthesized by a tryptophan independent pathway via

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#Question id: 12672

#Unit 6. System Physiology – Plant

Following are given some prediction about stress response which ultimately generate ROS;

a) Stress response activates the scavenging mechanism by ROS , these ROS is responsible for activating self-generation  mechanism by using RBOH

b) ROS have a negative effect on plant growth,  development,  and  yield

c) Almost every stress leads to the activation of ROS and its signal transduction

d) ROS indirectly induce acclimation mechanisms

Which of the following is the correct prediction about ROS activated by stress response?

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#Question id: 4219

#Unit 3. Fundamental Processes

Which of the following statements correctly describes Archibald Garrod's hypothesis for how "inborn errors of metabolism" such as alkaptonuria occur?

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#Question id: 3949

#Unit 3. Fundamental Processes

Which of the following observations supports the view that ribosomal RNA has catalytic activity?