Answer:
C. CALVIN CYCLE(LIGHT INDEPENDENT REACTIONS OF PHOTOSYNTHESIS.
Explanation:
Photosynthesis is the process whereby green plants manufacture their food (organic matters in form of glucose) from carbon IV oxide and water molecules in the presence of sunlight.
The glucose formed undergoes two purposes; provision of energy and in the fixing of carbon.
This process involved two steps : The light dependent process and the light independent (Calvin cycle).
The light dependent reaction takes place in the thylakoid membrane and requires supply of light energy.
ATP and NADPH are formed, water molecules are also formed.
The light independent reaction occurs in the stoma and does not require light energy. The process used the ATP and NADPH formed from the light dependent reaction to fix carbon and produce three carbon sugars.
So the Calvin cycle light independent reaction is involved in the fixing of carbon molecules into organic molecules in the absence of sunlight and the ATP and NADPH formed from the light dependent process of photosynthesis.
Answer:
The correct statements are a, b and d. The incorrect statements are c and e.
Explanation:
Substrate level phosphorylation signifies the generation of ATP from ADP and a phosphorylated intermediate. On the other hand, in oxidative phosphorylation, the formation of ATP takes place from ADP and Pi, that is, an inorganic phosphate.
In substrate-level phosphorylation an enzyme is needed for the reaction to take place. In the process, a dissociation of bond takes place between an organic molecule and a phosphate prior to the formation of ATP. In this, one of the substrates is a molecule obtained from the dissociation of glucose.
In substrate-level phosphorylation, the enzyme taking part in the synthesis of ATP is not required to get attached to the membrane to generate ATP. The phosphate group, which is added to ADP to produce ATP does not come from free inorganic phosphate ions.
Answer:
A. the two genes on chromosome 1 are more than 50 mu apart.
Explanation:
Two or more genes present on the same chromosomes are the linked genes. Linked genes do not assort independently and do not exhibit crossing over. Therefore, the linkage of genes results in deviations from Mendel's law of independent assortment. However, if the linked genes are present far from each other on the same chromosome, they may exhibit crossing over.
The greater the distance between the linked genes, the higher are the chances of crossing over. Crossing over of linked genes would result in some of the progeny to have the new gene combinations as it occurs during an independent assortment of two genes. Therefore, Mendel observed an independent assortment of two genes present together on chromosome 1 since they were present far apart from each other (more than 50 mu apart).
Answer;
Psychologists suspect that these mental deficits often results from growing up in a below average intellectual environment.
Explanation;
Cultural familial is a mental deficit in which no evidence of organic brain damage can be found; individuals' IQ range from 55 to 70. Psychologists suspects that these mental deficits often results from growing up in a below average intellectual environment.
