PATHOLOGY MCQ
GENETICS AND DISEASE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
DNA converts light energy into chemical energy.
|
|
|
DNA contains nutrients that cells are able to ingest.
|
|
|
DNA provides instructions for cellular activities.
|
|
|
DNA stores water molecules that hydrate an organism’s cells.
|
Detailed explanation-1: -DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.
Detailed explanation-2: -In all living things, DNA is essential for inheritance, coding for proteins, and providing instructions for life and its processes. DNA dictates how a human or animal develops and reproduces, and eventually dies. Human cells normally contain 23 pairs of chromosomes, for a total of 46 chromosomes in each cell.
Detailed explanation-3: -DNA now has three distinct functions-genetics, immunological, and structural-that are widely disparate and variously dependent on the sugar phosphate backbone and the bases.
Detailed explanation-4: -The nucleus (plural, nuclei) houses the cell’s genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins.