Tissue damage activates nociceptors or pain receptors in the skin. A signal is sent to the peripheral nerve to the spinal cord where neurotransmitters or chemical messengers are released. It activates other nerves to pass signal to the brain. The signals are relayed to the somatosensory cortex for sensation, frontal cortex for thinking and limbic system for emotional response.
Answer:
True
Explanation:
That's why modern-day farmers use giant sprinklers and tractor water tanks and trucks!
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Answer:
b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails
Explanation:
B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.
The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.
The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.
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The average daily dietary fiber recommendations are 38 grams and 25 grams for male and females respectively. Dietary fiber is the indigestible portion of food that is usually derived from plants. It includes soluble fibers found in peas, beans, apples among others and the insoluble fiber, which promotes the movement of material through the digestive system and increases the bulk of the stool.
Answer: Of 125 students with hitchhiker's thumbs, 1/3rd would be homozygous dominant (41 students)
HH homozygous dominant
Hh heterozygous dominant
hH heterozygous dominant
hh homozygous recessive
