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maw [93]
3 years ago
12

Describe the channels and ions that neurons use to generate an action potential. (include when channels open and close and which

way ions move)
Biology
1 answer:
IgorC [24]3 years ago
4 0

Answer:

Both of the cells make use of the cell membrane to regulate ion movement ... So another way that channels can be categorized is on the basis of how they are gated. ... When the cell is at rest, and the ion channels are closed (except for leakage ... What has been described here is the action potential, which is presented as a

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Match each of Darwin's ideas to the earlier scientist whose work helped Darwin develop the idea.
mamaluj [8]

Answer:

Lamarck:

The inheritable traits of species may change over time.

Malthus:

In every species in nature, some individuals survive while may others die.

Hutton, Lyell:

The environment of organisms may change over time.

Explanation:

Darwin's revolutionary ideas were influenced by a number of scientists and thinkers of the time:

Jean Baptiste Lamarck:

A botanist and zoologist, Lamarck, for, the first time, proposed the idea of evolutionary changes or adaptations in organisms in response to changes in the environment. He introduced the concept of inheritance of acquired characters.

Thomas Malthus:

Thomas Malthus was not a biologist, but an economist who proposed the ideas that at the rate of the current population growth, human population would eventually suffer from famine and starvation.This would lead to the deaths of the weakest of the population. This idea inspired Darwin to formulate the idea of "the survival of the fittest".

Charles Lyell and James Hutton:

Charles Lyell and James Hutton were famous geologists who greatly influenced Darwin with their theories about the beginning and evolution of the Earth. Charles Lyell proposed that the present state of the Earth was a result of small, gradual changes. James Hutton theorized that the processes that too place at the beginning of the Earth were still in progress.

Lyell and Hutton's work paved the way for the formulation of the theory of natural selection.

6 0
3 years ago
In what way are cell biologists and molecular biologists similar?
Dmitry [639]

Molecular biologists are interested in things like the level of gene expression (how much protein or RNA is present at any given time), which molecules are directly touching each other inside the cell, etc. ... Cell biology techniques, on the other hand, want to know what's going on inside intact cells.

( Try to see which one sounds best after reading this)

4 0
3 years ago
Read 2 more answers
In what direction does blood flow through the heart? a) from ventricles to atria b) from a region of high pressure to a region o
Sauron [17]

Answer:

b) from a region of high pressure to a region of low pressure

Explanation:

Blood flow is measured in blood volume per unit time. It is the movement of blood through an organ, tissue or vessel. It is initiated when ventricles in heart contract leading to its ejection at high pressure. Major arteries receive this blood and they further transport it at high pressure to smaller arteries, arterioles and capillaries. Hence arteries have thick walls to withstand this pressure. The pressure decreases when blood reaches to veins hence their walls are not that thick.  Hence, blood flows from a region of high pressure to a region of low pressure.

3 0
3 years ago
_____ is the main provider of energy for the brain and nervous system.
defon
Glucose is the main provider of energy for the brain and the nervous system. Because the brain is so rich in nerve cells, or neurons, it is the most energy demanding organ, using one half of all the sugar energy in the body. Brain functions such as memory, thinking and learning are closely linked to glucose levels and how efficiently the brain uses this fuel source. 
7 0
3 years ago
2. The green dot indicates a trait that is shared
barxatty [35]
The only trait that I know that those birds and a squirrel have in common in that they both love birdseed.
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3 years ago
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