The first sighting of a crescent moon after a new moon
The options were not well-ordered, it should be options A to E.
Answer: The correct answer is that the pancreas releases insulin.
Explanation:
Whenever the blood glucose level is high, the pancreas responds by releases insulin, a hormone secreted by its beta cells, and responsible for the regulation of blood sugar level by
- signalling cells of the muscle and liver to store excess blood glucose as GLYCOGEN until energy need arises.
Unlike insulin, when blood glucose levels is low, Glucagon is released also by pancreas to stimulates glycogen breakdown to raise glucose levels
Answer:
The X-shaped structure is made of strands of DNA.
Explanation:
The chromosomes are thread-like structures located in the nucleus of each cell in the body. In a human cell, there are 23 pairs of chromosomes found in the nucleus. Each chromosome is made up of strands of DNA tightly coiled many times around proteins called histones which gives support to its structure.
The chromosomes are X-shaped and are observed only in a cell undergoing division by mitosis or meiosis. Each of these X-shaped chromosomes consists of two identical sister chromatids. The sister chromatids are connected to each other by a region of the chromosome called the centromere. The centromere are located around the depression point of the chromosome which divides the sister chromatids into two regions: long arm called the q arm and a shorter arm called the p arm. During mitosis, spindle fibers attach to this region, and they eventually pull the sister chromatids apart to form two separate chromosomes, one for each daughter cell.
Answer:
The answer is competition.
Explanation:
Competition is a type of relationship where a negative interaction occurs among organisms whenever two or more organisms require the same limited resource.
Phospholipids have phosphate group heads that are hydrophilic while the fatty acid tails are hydrophobic.
They are able to form cell membrane as they automatically arrange themselves in the required pattern in water because of these properties.To form membranes, these line up next to each other with their heads on the outside of the cell and their tails on the inside. A second layer of phospholipids also forms with heads on the inside of the cell and tails facing away.
In this way a double layer is formed with phosphate group heads on the outside, and fatty acid tails on the inside. This double layer, called a lipid bi-layer, forms the main part of the cell membrane.
