Oogenesis (or the production of the egg cell) takes place in the ovaries
<span>During the synthesis of a protein, a shortage of one needed amino acid can stop the process.</span>
<span>If the missing amino acid is a nonessential amino acid, it can be synthesized, most often by transamination, and protein synthesis can continue.
If the missing amino acid is an essential amino acid, the body cannot make the amino acid, but it can break down some of its own proteins to obtain it. If an amino acid cannot be supplied, protein synthesis stops.</span>
Answer:
D) In case 1, both PS I and PS II completely lose function; in case 2, a proton gradient is still produced.
Explanation:
The light dependent reaction of photosynthesis, which produces the ATP and NADPH needed in the light independent stage of the process, includes complexes of proteins and pigments called PHOTOSYSTEMS. These photosystems (I and II) are key to the functionality of the light dependent reactions in the thylakoid.
The major pigment present in both photosystems is CHLOROPHYLL A, which absorbs light energy and transfers electrons to the reaction center. Chlorophyll B is only an accessory pigment meaning it can be done without. Hence, if all of the chlorophyll A is inactivated in the algae but leaves chlorophyll B intact as in case 1, both PS I and PS II will lose their function because Chlorophyll A is the major pigment that absorbs light energy in both photosystems.
In case 2, if PS I is inhibited and PS II is unaffected, a PROTON GRADIENT WILL STILL BE PRODUCED because the splitting of water into protons (H+) and electrons (e-) occurs in PSII. Hence, H+ ions can still be pumped into the inner membrane of the thylakoid in order to build a proton gradient even without the occurrence of PS I.
Can you put the terms as well, please
Answer:
In an important experiment, radioactively labeled bacteriophages were allowed to infect bacteria. In the first trial, the phages contained radioactive DNA, and radioactivity was detected in the bacteria. Next, other phages containing radioactive protein were allowed to infect bacteria, and radioactivity was not detected in the bacteria. These experiments led to the conclusion that <u>genes of phage are made of DNA.</u>
Explanation:
Bacteriophages are the viruses which infect the bacteria. They bind to the surface of bacteria and inject the inner core and genetic material in the bacteria.
As in the first trial, the phages contained radioactive DNA, and radioactivity was detected in bacteria, it clearly shows that <u>genes of phage are made of DNA</u>. While, on the other hand,other phages containing radioactive protein were allowed to infect bacteria, and radioactivity was not detected in the bacteria clearly indicating that protiens are not entering the bacteria.
