A.Zygomatics doesn't belong with the list of organelles
Operons are gene regulatory mechanisms that involve promoting and repressing genes that are involved in the metabolism of organic substances (i.e. sugars). Living organisms have the innate ability to metabolize glucose as the main source of energy. Although, in the absence of glucose, the organism must "learn" to use sugars other than glucose (such as lactose) in order to survive.
For instance, in the <em>lac </em>operon:
In the absence of glucose, various regulatory proteins promote the transcription of the gene related to the metabolism of lactose. This will ultimately lead to the production of the enzyme beta lactosidase which will enable the organism to use lactose as energy in the absence of glucose. This will therefore increase the chances of the organism for survival and will be naturally selected for evolution.
Answer:
The total number of possible combination of gametes formed through a particular genotype can be found by using the formula 2ⁿ, where n is the number of dissimilar or heterozygous allele pairs present in the given genotype.
For example, if the given genotype TtYyRR there are 2 allele pairs which are present in heterozygous condition.
So, possible combination of gametes would be 2² = 4.
All the possible combinations would be:
Answer:
Explanation:
Water absorption and transport into a plant is mostly driven by transpiration of water from leaves. The process of water evaporation via specialised holes in the leaves called stomates is known as transpiration. As a result of the evaporation, a negative water vapour pressure develops in the leaf's surrounding cells.
Root pressure
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The cells around the xylem vessels in the root uses active transport to absorb mineral salts up a concentration gradient into the plant. This lowers the water potential in the xylem vessels. Water therefore passes from the living cells into the xylem vessels by osmosis and flows upwards
Capillary action
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Water tends to move up inside very narrow tubes due to the interactions between water molecules and the surfaces of the the tube. If the tube is sufficiently small, then the combination of surface tension (which is caused by cohesion within the liquid) and adhesive forces between the liquid and container wall act to propel the liquid.
Cohesion theory
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When water leaves the plant by transpiration, it creates a negative pressure ( suction ) on the water to replace the lost amount of water. It is like your typical straw when you suck on it. This negative pressure on the water pulls the entire column of water in the xylem vessel. This negative pressure due to transpiration is known as "transpiration pull". It is the main force in drawing water and mineral salts up through the plant.
Force and displacement must be present according to formula and if asking about components then maybe X and Y