The statement 'the best way to detect the lack of photosystem II in these organisms would be to test for the liberation of O2 in the light' is TRUE.
Photosynthesis has two types of reactions: initial light-dependent reactions and late light-independent reactions.
The photosystem II (PSII) is the first protein complex responsible for the initial light-dependent reactions.
This photosystem captures sunlight to catalyze the generation of an electrochemical transmembrane proton (H+)gradient, which is subsequently used to synthesize ATP.
Photosystem II produces molecular oxygen (O2) by oxidizing two molecules of water (H2O) into one molecule of oxygen.
In conclusion, the statement 'the best way to detect the lack of photosystem II in these organisms would be to test for the liberation of O2 in the light' is TRUE.
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Answer:
True.
Explanation:
Photosystem II is a protein complex that is located in the thylakoid membrane of plants with a significant role in light-dependent reactions of photosynthesis.
Photons of sunlight are absorbed by photosystem II and electrons within the system consequently become excited. As a result, electrons are replaced by the water, and hydrogen ions and molecular oxygen are formed.
b. external; internal
c. oxygen; temperature
d. temperature; pH
The best answer is a - internal : external
Homeostasis is the body's ability to maintain constant internal conditions when external conditions change.
It is the ability of an organism or a cell to regulate its internal conditions, usually through a system of feedback controls so as to stabilize the health and functioning regardless of the outside changing of conditions..
For example in man, homeostasis occurs when the body regulates body temperature in an effort to maintain an internal temperature at around 37° C.
Homeostasis is the body's ability to maintain constant internal conditions when external conditions change.
Homeostasis is the body's ability to maintain constant internal conditions when external conditions change.
It is the process by which the body adjusts to changes and maintains equilibrium by ensuring that body functions remain within a certain range.
For example, when the body becomes too warm, adjustments are made to cool the body.
Homeostasis is essential for the proper functioning of the body and is regulated through various feedback mechanisms.
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Answer:
Interphase is when the cell grows and duplicates chromosomes. This is important for the cell to divide, because otherwise, the cell would shrink everytime it divided and would not have a sufficient amount of DNA
Explanation:
(B) When antibodies bind to a bacterial cell, it may keep that cell from adhering to host cells.
(C) The specific receptors on T cells that would interact with a specific antigen are the same shape as antibodies that will interact with that antigen.
(D) By binding to antigens, antibodies mark those antigens for destruction by macrophages.
(E) By binding to an invader, antibodies attract proteins that lyse the target membrane.
Answer:
Becomes thick with blood vessels passing through
Explanation:
Progesterone levels are the highest in the middle of the luteal phase i.e at the eighth or ninth day of menstural cycle. it is the hormone which is released after ovulation. It is produced by the corpus luteum (an area created by the collapsed follicle) which consists of ovulated egg. At this stage the uterus lining gets thick and also estrogen is at high level. If the conception does not takes place the level of progesterone falls as the corpus luteum starts to break.
Answer:
This is not true
Explanation:
Wells were used in olden days to store and use water. During those days mechanical pulleys were used to extract water out of wells but now a days modern pumps and lifting equipment are used for bringing underground water to the users.
These days water is supplied through pipes and no traditional bucket or rope is used for pulling out water out of the ground. Though wells exists even today but its usage as a primary source of fresh drinking water is no longer in system but rather they are preferred as water storage units.
Answer:
The use of wells to obtain drinking water is not a modern convenience. It might have been a convenience in the past, but with our technological advancements, the use of wells aren't that popular anymore. It is not disregarded though that the usage of wells aren't dropping to a stop since they are still utilized by people usually living in the rural areas. As for the convenience part, well it isn't as convenient as it seems since establishing the well itself would take so much work.
Explanation:
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