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valina [46]
3 years ago
13

What is the difference between an excitatory postsynaptic potential and an inhibitory postsynaptic

Biology
2 answers:
Vikki [24]3 years ago
8 0

Answer:

A postsynaptic potential is defined as excitatory if it makes it easier for the neuron to fire an action potential. ... A postsynaptic potential is considered inhibitory when the resulting change in membrane voltage makes it more difficult for the cell to fire an action potential, lowering the firing rate of the neuron.

ryzh [129]3 years ago
3 0

Answer:

excitatory presynaptic cell, connected to the dendrite, fires an action potential. ... An inhibitory postsynaptic potentials (IPSP) is a temporary hyperpolarization of postsynaptic membrane caused by the flow of negatively charged ions into the postsynaptic cell.

Explanation:

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Write a paragraph explaining how genetic variation, reproductive strategies and environmental pressures have impacted the surviv
Andreas93 [3]

Answer: Genetics and Pressures

Explanation:

For natural selection to occur, a population must have a wide variety of individuals with different traits. For example, natural selection would not influence fish body color if all individuals in a population were exactly the same color. Variation of scale color can help a fish species have a higher chance of survival by confusing predators as to what species they are.

Reproductive strategies represent a set of behavioral, morphological, and physiological adaptations that facilitate access to potential mates, improve the chances of mating and fertilization, and enhance infant survival. Male peacocks have bright, big tail feathers, for example, to attract females. If an organism has a high appeal, this will make them more likely to be able to meet and continue the survival of the species.

Environmental pressures, such as plant death, could influence the survival of herbivorous organisms. Say a small land creature consisted off grass, and an epidemic killed all the grass in their region. They would either die off, or they would evolve to find different types of food. The former could reduce population, while the latter could increase it.

4 0
2 years ago
Collectively, the hollow cavities in the maxillae, ethmoid, sphenoid, and frontal bones are called the ____________ sinuses..
slamgirl [31]
The answer to this question would be: paranasal sinus.

There are a few sinuses near the face area. The sinus can be classified based on the bone that makes then to sinus maxillae, ethmoid, sphenoid and frontalis. This structure frequently gets infected causing sinusitis. Sinusitis patient can complain pain or feel the sinus got filled with some liquid.
8 0
3 years ago
How s dominant allele masks the presence of a recessive allele
zysi [14]

the answer is the ratio is off

4 0
3 years ago
Mr. White gives you an empty box and asks you to push it with 10N of force. He then puts all of the class textbooks in the box,
jarptica [38.1K]
The mass of the box increased and the acceleration of the box decreased
3 0
3 years ago
Which features is least useful in assigning the phylum cycliophora to a clade of animals?
Musya8 [376]

Answer:

Having a true coelom as a body cavity.

Explanation:

Coelomate contain tissues derived from mesoderm, whereas pseudocoelomates have no such tissue. have a gut that lacks suspension within the body cavity, whereas pseudocoelomates have mesenteries that hold the digestive system in place. Have a body cavity completely lined by mesodermal tissue, whereas pseudocoelomates do not.

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