Answer:
Explanation:
The correct match is given below:
1. Communicable by direct acquisition via vertical transmission. C. <em>Treponema palladium</em> (syphilis).
2. Communicable by indirect transmission via air droplets. B. Tuberculosis
3. Communicable by direct transmission via a biological vector. F. Malaria
4. Non-communicable. A. <em>Clostridium tetani </em>(tetanus).
5. Communicable by indirect transmission via fomites. D. <em>Staphylococcus aureus</em>.
Answer:
D
Explanation:
The first step in DNA replication is to 'unzip' the double helix structure of the DNA molecule. This is carried out by an enzyme, called helicase which breaks the hydrogen bonds? holding the complementary bases of DNA together
Vitamin D is one of many nutrients our bodies need to stay healthy. It helps the body absorb calcium, which then build bones and keep bones strong and healthy. Severely low levels of vitamin D can result in soft, brittle bones; bone pain; and muscle pain and weakness.
What is vitamin D and why is it needed?
Vitamin D is one of many nutrients our bodies need to stay healthy. Among the vitamin's main functions, it helps the body:
Absorb calcium. Vitamin D, along with calcium, helps build bones and keep bones strong and healthy.
Block the release of parathyroid hormone. This hormone reabsorbs bone tissue, which makes bones thin and brittle.
Vitamin D may also play a role in muscle function and the immune system. The immune system is your body's defense system. It helps protect it against infections and other illnesses. Taking vitamin D every day has been shown to reduce the risk of falling in older individuals.
Other ways vitamin D is thought to help us, and how much we would need to take, is an area of active research (and controversy). There have been studies to suggest that it might help prevent colon, prostate, and breast cancers. There is also some research that it might help prevent and treat diabetes, heart disease, high blood pressure, and multiple sclerosis. However, the results of many of these studies are either preliminary or under debate. Without other long-term research, even many of the researchers who conducted these initial studies are cautious about recommending vitamin D for the prevention of these diseases.
Vitamin D is one of many nutrients our bodies need to stay healthy. It helps the body absorb calcium, which then build bones and keep bones strong and healthy. Severely low levels of vitamin D can result in soft, brittle bones; bone pain; and muscle pain and weakness.
What is vitamin D and why is it needed?
Vitamin D is one of many nutrients our bodies need to stay healthy. Among the vitamin's main functions, it helps the body:
Absorb calcium. Vitamin D, along with calcium, helps build bones and keep bones strong and healthy.
Block the release of parathyroid hormone. This hormone reabsorbs bone tissue, which makes bones thin and brittle.
Vitamin D may also play a role in muscle function and the immune system. The immune system is your body's defense system. It helps protect it against infections and other illnesses. Taking vitamin D every day has been shown to reduce the risk of falling in older individuals.
Other ways vitamin D is thought to help us, and how much we would need to take, is an area of active research (and controversy). There have been studies to suggest that it might help prevent colon, prostate, and breast cancers. There is also some research that it might help prevent and treat diabetes, heart disease, high blood pressure, and multiple sclerosis. However, the results of many of these studies are either preliminary or under debate. Without other long-term research, even many of the researchers who conducted these initial studies are cautious about recommending vitamin D for the prevention of these diseases.
If all receptor proteins were removed from hepatocytes' (liver cells') membranes, then the liver would no longer respond to hormones. This would be catastrophic to the metabolism, because the liver could no longer process nutrients such as glucose. Such a malady would prove fatal when not eating, because the lack of glycogen, cortisol, epinephrine (and other hyperglycemic hormones) woukd lead to hypoglycemic shock, coma, and death.
In DNA base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine. Adenine is also one of the bases in RNA. There it always pairs with uracil (U). The base pairs in RNA are therefore A-U and G-C.