Answer:
Option D, Essentially none
Explanation:
The essential condition for lac operon to express its subsequent proteins i.e laz A, lacZ and lacY are as follows –
a) Absence of glucose
b) Presence of Lactose.
In fact absence of glucose is must. In case when lactose is absent and glucose is present then the lac z sub-protein whose product is β-galactosidase is not expressed. In fact in lac z breaks down lactose into glucose and galactose in absence of glucose.
Hence, option D is correct
<span>2. x-rays result from the decay of an excited nucleus (one which has a higher energy than the usual energy) without changing the mass or atomic number of...
</span><span>X-rays are fast and and simple method of imaging recommended by most of the doctors nowadays, it is painless and doesn't require much preparation and also doesn't require recovery time after having x-rays. The only time that x-rays become dangerous to a persons health is when they are exposed too much of radiation however, this risk is very low.</span>
Answer:
Photosynthesis is the process where green plants synthesis energy using the energy of the sun, carbon dioxide and water. Photosynthesis is very important to life it keeps most plants alive (autotrophs), and heterotrophs eat autotrophs to help them het energy. An autotroph is an organism that synthesis its own energy and heterotroph is an organism that gets it energy by digesting other organisms.
Answer:
C. Succinate is the substrate, and fumarate is the product.
Explanation:
Succinate is the substrate, and fumarate is the product in the reaction.
