Answer:
The hydrophobic tails are sandwiched in between because they are ‘water-hating’ leaving the hydrophilic ends (which are ‘water-loving’) to interact with the watery environment inside and outside of the cell. The hydrophobic ends are mainly made of fatty acid chains ( and have no charges) while the hydrophilic ends are made of phosphate molecules that are negatively charged.
Answer:
Glycogen
Explanation:
Glycogen is a storage polysaccharide, which means it is made up of a chain of many monosaccharides. It is a storage polysaccharide because it is stored in the liver and muscle cells to be used as a source of energy later on.
Our body uses glucose for energy, but when it is not used up, it is stored in the liver and made into glycogen. When the body needs an extra boost of energy, it will use glycogen, especially when there is no other source like glucose, around.
Answer:
(A). more urine is produced.
Explanation:
ADH (antidiuretic hormone), also known as vasopressin is a peptide hormone, which is synthezied in hypothalamus and is secreted by posterior pituitary gland.
ADH plays role in osmoregulation as it is responsible for water retention by decreasing urine output when there is low level of water in body.
As ADH is responsible for decreased urine formation, more urine will be produced due to decrease in ADH that would lead to an increase osmolarity of urine.
Thus, the correct answer is option (A).
Answer:
The essential factor to increase the number of cells in a growing organism is that each and every cell has a complete copy of DNA.
Explanation:
The development and growth of an organism is based on the multiplication of its tissue cells. Cell multiplication in somatic cells occurs through mitosis, a process that allows obtaining<u> two identical daughter cells from a progenitor cell</u>.
DNA contains all the genetic information belonging to a living organism. In the process of mitosis, the DNA of each cell must be replicated so that each daughter cell has a complete copy of the original DNA. This ensures that each cell resulting from mitosis has the same structure and function as the original cell.
The other options are not correct because:
- <em>The </em><u><em>size of the cell is important</em></u><em>, since each cell has defined characteristics, according to the tissue it must form.
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- <u><em>Each and every cell needs to have a complete DNA</em></u><em>.
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- <em>In somatic cells, </em><u><em>DNA does not vary from one cell to another</em></u><em>.</em>