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4 years ago

When a neuron is at rest, there is a high concentration of _____ ions inside the cell relative to the outside?

1 answer:

5 0

When a neuron is at rest, ................................. of POTASSIUM IONS inside the cell relative to the outside.
When a neuron is resting, the concentration of sodium ions outside the cell is very high compare to the inside of the cell while the inside of the cell has high concentration of potassium compares to outside of the cell.

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Biology!!! Thanks for any help!

dsp73

Answer:

1.A

2.not D

3.A

4.D

5idk

Explanation:

5 0

3 years ago

I have a simple question about external variables. If I'm doing an egg drop experiment, and my teacher "chucks" it off of the ro

otez555 [7]

Ok, a few things here:

This is an egg drop experiment, so I'm assuming you are testing out different ways of protecting the egg.

The independent variable is what you want to change: This would be the type of protection you have on the egg

The dependent variable is what would be effected by the changes in the independent variable: which would be something like the integrity of the egg after it hits the ground. You'd have to measure that somehow.

There are two types of controlled variables: <em>Internal and External.</em>

Internal variables are within the scope of the experiment and can be controlled, whereas external variables are outside the scope of the experiment and we have no control over them.

Internal:

- Height of the drop

- Type of egg

- Person dropping

- How the egg is dropped

- Surface being dropped on to

External:

- The person designated to drop the egg is sick

- You run out of eggs to drop

- Somebody loses all the planning for the experiment

- The weather forces you to do the experiment inside versus outside

- The wind blows your egg off course, leading to it hitting the ground at an angle

So, the way your teacher "chucks" the eggs off the roof should be a controlled internal variable. The action should be done as consistently as possible to avoid an uncontrolled variable.

3 0

3 years ago

In an ecosystem, plants are autotrophs. The term autotroph means that plants are capable of changing sunlight into sugar. In oth

kiruha [24]

Answer:

D) producers

Explanation:

In an ecosystem, as plants are termed autotrophs, they are the producers.

An ecosystem is made up of both living and non-living components which co-exists together.

plants are classified as producers as they take inorganic substances from the environment to produce their own food.
this food is taken up by other members of the ecosystem for their own nourishment too.
they are the producers and consumers depends on them for nourishment.

7 0

3 years ago

explain why a father with blood group AB cannot donate for a child with blood group O when he marries a woman with blood group O

denis-greek [22]

The odds are astronomical for a father with AB(IV) to have an O(I) child. The only possible way for this phenomenon to occur is if there was a nondisjunction in the ovogenesis for the 9th chromosome and the father also had a nondisjunction for the same chromosome(A sperm cell with no 9th chromosome fertilized an ovum with two 9 chromosomes).

A person with AB cannot donate to a person with O because the receiver has antibodies(alpha and beta) that bind to the antigens on the AB blood cells, causing death.

7 0

4 years ago

HELLLLPPPPPPPPPPPLEASEEE

Sergio039 [100]

answer:

The organisms are members of the same family.

this is the answer.

6 0

3 years ago