<h2>
Answer: Some regions of a polypeptide may coil or fold back on themselves. This folding is called <u>
Secondary structure </u>
and the coils or folds are held in place by <u>Hydrogen Bonds</u></h2>
Answer:
I don't know what you mean but emotionally the human body is very fragile and physically the human body is very strong
Answer:
4) It allows the exchange of nutrients between the embryo and the mother, while at the same time filtering out harmful material.
Explanation:
The placenta is an organ present in all mammals. She is confirmed between the 6th and 8th week of pregnancy and has as main function the exchange of substances between the mother and the fetus. Among these substances are nutrients, gases and even secretions. The placenta also has the function of fighting infections and promoting immunity to the fetus, in addition, it can act as the lung, the intestine and the liver, while the fetus does not develop its organs.
Answer:
1. Angiosperms develop unique reproductive organs known as flowers. Flowers contain ovaries, witch surround and protect the seeds.
2. The main parts of a flower are the sepals and petals, which protect the reproductive parts: the stamens and the carpels. The stamens produce the male gametes in pollen grains. The carpels contain the female gametes (the eggs inside the ovules), which are within the ovary of a carpel.
3. All angiosperms have flowers at some stage in their life. ...
Angiosperms have small pollen grains that spread genetic information from flower to flower. ...
All angiosperms have stamens. ...
Angiosperms have much smaller female reproductive parts than non-flowering plants, allowing them to produce seeds more quickly.
4. When an individual organism increases in size via cell multiplication and remains intact, the process is called "vegetative growth". However, in vegetative reproduction, the new plants that result are new individuals in almost every respect except genetic.
5. Fruits are produced only by flowering plants (angiosperms). Following pollination of the flower, the fertilized ovules develop into seeds while the surrounding ovary wall forms the fruit tissue, or pericarp.
Explanation:
<span>T-tubules and SR form Molecularly and Structurally specialized Membrane domains that support E-C, Excitation contraction.</span>
