Answer:
(A) True
Explanation:
Vitamins are important for the human body because it plays an important function in the body like in metabolism, calcium absorption, releasing energy from food, cell damage repair, etc.
For example, vitamin D can be made by the body itself. This vitamin is made by the skin when UV radiation from the sun falls on the skin. This vitamin act as membrane antioxidant and helps in inhibiting iron-dependent lipid peroxidation in cell's liposomes.
It also helps in calcium regulation in the body and without vitamin D the dietary calcium is not properly absorbed.
Answer: I'm not sure what the question is, given there aren't any images provided to choose from, but a ribosome looks something like the picture I attached. Good luck!
Explanation:
Hey
Correct answer: Scavenger
Why? Because a scavenger is an animal that eats dead animals. A vulture is a example of one
have a good day
Veins have valves that allow them to build up pressure and thus pump blood against gravity
Answer:
The correct answer is - sexual transmission.
Explanation:
HIV infections can be transmitted by the various mode. Sexual transmission is one of the major mode of transmission which is comprise almost 90 % of HIV infection, according to the reports. These are relatively inefficient mode, unprotected or unnatural sex is the major mode for the HIV transmission worldwide. Cases are now comparatively less than when it was discovered due to awareness.
Thus, the correct answer is - sexual transmission.