Answer:
The correct answer is - hydrogen bond.
Explanation:
Hydrogen bonding is very essential for life on earth. DNA has a double-helix structure that means it has two distinct strands in its structure and hydrogen bonds hold together the nitrogen base pairs in the middle. In absence of hydrogen bonds, DNA would have to exist as a different structure. The principal force or bonds between those two strands are Hydrogen bonds between the nitrogen bases. Adenine always makes a hydrogen bond with Thymine whereas Guanine always binds with cytosine.
Thus, the correct answer is - hydrogen bond.
Answer:
Presence or absence of cilia/stinging cells.
Numbers.
Retractability.
Number of cells.
Explanation:
Apart from size difference, tentacles in Cnidaria and Bryozoa differs such that:
- <em>The tentacles in Cnidaria have no cilia surrounding them while those of Bryozoa are ciliated. Instead of cilia, the tentacles in Cnidaria have stinging cells.</em>
- <em>Tentacles in Cnidaria are fixed in number while the number may vary in Bryozoa.</em>
- <em>Tentacles in Cnidaria are often retractable while retractability is not possible in Bryozoa.</em>
- <em>Cnidaria tentacles are made up of multiple cells while those of Bryozoa are made up of single cells.</em>
Answer:
The correct answer is A.
Explanation:
Diffusion is the net movement of a substance from a region of higher concentration to a region of lower concentration. The difference in concentration between two environments creates a concentration gradient which is what drives diffusion. Therefore, this movement does not require aid such as extra energy molecules for active transport or integral membrane proteins for directed movement, hence the answer is not B nor C. If the cell is in equilibrium with its environment, it means that the concentration of substances inside the cell is equal to the concentration outside the cell, and any movement that takes place will be random movement of substances across the plasma memberane. Movement in the cell will not cease as the cell is still active. Therefore, the answer cannot be D either.
The answer to this question would be: triglyceride
Triglyceride is made of a glycerol with three fatty acids. A similar structure to this would be the diglyceride which was consist of glycerol with two fatty acids. Triglyceride could transport adipose fat or glucose to or from the liver. A high level of triglyceride is linked to heart disease and other atherosclerotic.
What are the experiments?
