Those that do not show artificial selection are examples A and B.
Answer:
The following are the sections which can be seen in a food label:
1) Product dates:
Under this section look for the production date and the expiry date ( best before). The production date tells when the food was made. The expiry date tells the date before which the food has to be used.
2) Ingredient list:
The list of all the ingredients used for the preparation of the food is mentioned.
3) Nutrition Facts Label
At the top of this label, we will see the total number of servings and size of the container. Thus table shows some key nutrients and the percent of them present in the container of food. It also shows the calories of each. Percent Daily Value (DV) shows the percentage of each nutrient present.
The nutrient label are important to an athlete because he/she needs to take a diet which is capable of filling us nutrient requirements. Athletes tend to perform well when they have a balanced diet. To get a balanced diet, they need to look at the nutritional values.
Magnesium Sulphate Monohydrate
The correct answer to this is:
“Astrocytes”
Astrocytes also called star cells due to their shape are the
most abundant glial cells in the brain. Extensions from these cells encase
capillaries and offer extra control over which materials enter or leave the
intercellular fluid of the CNS thus acting like a permeability membrane.
Answer: The diffusion of ions along the axoplasm is faster,in myelinated compare to unmyelinated,
Neurons are the structural and functioning units of nervous system.They are the vehicles for transmission of impulses as electrical signals from one part of the cells,and from one part of the body to another.
The basic structural components of a typical neuron are the cellbody, the axon, and the dendrites.
Based on structure neurons are classified as myelinated and unmyelinated.This is based on the the surrounding layer of myelin sheath around the axon. The myelin provides the insulating layer for the axon.And ensures fast movement of impluses.
In myelinated neurons the myelin sheath are interrupted at intervals by gaps along the length of the axon called Nodes of Ranvier. These gaps contains more Na-K channels for influx and out-flux of K and Na+ ions for transmission of impulses.
The cytoplasm of axon is called axoplasm,Since this is surrounded by myelin sheath which contains Na-K+ channels,The rate of diffusion of ions along these channels is faster for depolarization to take place than in unmyelinated neurons. Inaddtion as these ions diffusion increases,its jump faster at the nodes of Ranvier (saltatory conduction) to the next axoplasm which further speed up the rate of transmission.
Unmyeinated lacks myelin sheath,therefore the exchange and the rate of diffusion of ions along the axons is low.
Explnation:
