Correct answer: D
A pollen is where male gametes are produced and so the number of chromosomes, as we are talking about gametes, is n. This means that the grain of pollen will only have a copy of each gene, and therefore only one allele for each gene - one S, and one T or t. So, the possible combinations are ST and St.
Answer:
Pinging
Explanation:
- Keith Ferrazzi is the author of the book never eat alone in which he provides ways to build and maintain relationships with other people.
- In his book, Ferrazzi has advised that "pinging" is the way by which about 80 percent of the relationships can be maintained.
- He has defined "pinging" as a quick, casual greeting which can done in any number of creative ways.
- He has given three steps by which pinging can be done to establish new relationships :
Step 1. Send email, call through phone or have face to face interaction with people you are trying to establish a new relationship with.
Step 2. Do a phone call or send an email once a month after a relationship has been nurtured.
Step 3. Having atleast two face to face meetings outside the office leads to establishment of friendship.
Answer:
c: the use of energy released from an exergonic reaction to drive an endergonic reaction.
Explanation:
<em>Energy coupling is a process involving two reactions whereby one of the reactions generate energy, and the generated energy is used to drive the other reaction. </em>
A reaction during which energy is generated is referred to as exergonic reaction while one in which energy is consumed is known as endergonic reaction. Hence, energy coupling can also be viewed as a process linking exergonic and endergonic reactions whereby the energy released in the former is used up by the latter.
A good example is illustrated by the light dependent and light independent reactions of photosynthesis during which the ATP and NADPH produced during the light dependent reaction is used to fix carbon dioxide in the light independent reaction.
<em>The correct answer is C.</em>
