This is a DNA chip (DNA strands- representing genes -attached to a substate surface such as ceramic) that is used in profiling gene expression. Using cDNA probe from a subject, and which are tagged with a flourescent marker, they are used to identify which genes of the patient, that are normally off have been turned on, and conversley, which genes have been turned off which are normally on. This is therefore important in cancer diagnosis.
Of the following given choices;
A. cell-to-cell communication
B. DNA synthesis
C. protein synthesis
D. fermentation
The answer is; D
It is basically called lactic acid fermentation. Glucose first processed in the first stages of the process of glycolysis to produce pyruvate. The proceeding stages depend on whether oxygen is present or not. When oxygen is pr3esent, the pyruvate is channeled to the Krebs cycle. When oxygen is absent, the pyruvate is converted to lactate.
ONLY 1 PERCENT of sunlight pierces the rain forest canopy. This is because in a rain forest the sunlight is blocked by the canopies formed by the densely growing trees and only a very small portion of sunlight reaches the surface of the rain forest. Thus, very little vegetation is found on the ground level of a rainforest.