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?

#Question id: 384

#Unit 1. Molecules and their Interaction Relevant to Biology

A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).

#Question id: 385

#Unit 1. Molecules and their Interaction Relevant to Biology

In which reaction below does water not participate as a reactant (rather than as a product)?

#Question id: 386

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following properties of water does not contribute to the fitness of the aqueous environment for living organisms?

#Question id: 387

#Unit 1. Molecules and their Interaction Relevant to Biology

For a weak acid with a pKa of 6.0, What would be the ratio of acid to salt at pH 5.

#Question id: 388

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the pH of a solution prepared by mixing 2.0 mL of a strong acid solution of pH=3.0 and 3.0 mL of a strong base of pH=10.0.

#Question id: 389

#Unit 1. Molecules and their Interaction Relevant to Biology

A weak acid HA has a pKa of 5.0.  If 1.0 mol of this acid and 0.1 mol of NaOH were dissolved in one liter of water, what would the final pH be?