Answer:
Motor neurons:
A. Function:
It relay messages coming from the brain or spinal cord to the muscles or organs.
B. Structure:
●Presence of long axons due to long distances the signals have to travel to the muscle its stimulating.
●It's myelinated, to assist the signal in travelling long distances as soon as possible.
Sensory neurons:
A. Function: its sensory receptors respond to stimuli by converting it into an electrical signal to the brain or spinal cord.
B. Structure:
●Presence of long dendrites / axons
● its myelinated
●since it's found in the middle of the neuron it forms ganglia that unites in the spinal cord and aid in involuntary reflexes.
Interneurons:
Structure:
● shorter than motor or sensory neurons
● has branches, a lot of branches consisting of axons and dendrites off the cell body to enable multiple simultaneous between neurons
● It's body is partially myelinated.
●occurs in large clusters of neurons to compensate for its partial myelination to speed up the signal
Answer: Colon cancer
Explanation:
All cancers, but especially colon and rectal cancers, commonly referred to as colorectal cancer (CRC), have hereditary factors that potentially increase one’s risk.
Genetic testing is determine if there is an increased risk of colon cancer. Apolipoprotein E (apoE) plays a major role in the metabolism of bile acids, cholesterol and triglycerides, and has recently been proposed as being involved in the carcinogenic process. Given the potential role of bile acids in colorectal cancer etiology, it is reasonable that colorectal cancer risk might be modified by apoE genotype. The absence of an e3 apoE allele significantly increased the risk of colon cancer especially for individuals above 50years.
Answer:
A: Suited for their environment
Explanation:
You can automatically eliminate B and C, since they both say that animals with adaptations that won't work with their environment would have a higher survival rate. This doesn't make sense; adaptations that wouldn't suit an environment would actually lower the population's chances of reproduction and survival.
That leads us to A and D. However, A would be the correct answer. Organisms with adaptations that suited their environment would help them (since it would make the organism more compatible with their environment), rather than having no change at all.
Hope this helped!
Answer:
Hey there!
A population increase follows a period of scarcity.
With more people, the food and water resources get scarce, and isn't always enough for everyone.
Let me know if this helps :)
Answer:
it is called tympanostomy tubes. they also help to equalize pressure
