Which ONE of the following tunica forms the innermost layer of the eye?

Earth is divided into large geographic regions or ________________, which are based on differences in climate A) biomes

Oliga [24]

D habitats because it is divided up into different areas and different areas have different kinds of habitats

7 0

4 years ago

during an action potential, the relative charge across the membrane of an axon is reversed. which ion makes the largest contribu

Nadya [2.5K]

In the depolarization step of action potential where the membrane resting potential is reversed by the rush of sodium ions into a neuron.

A membrane potential shift from -70mV to +30mV for a limited period of time is known as an action potential.

The moving action potential has three stages:

1) The depolarization step, where sodium ions rush into a neuron and reverse the membrane resting potential; and

2) repolarization, which is a mechanism that restores the resting voltage of the membrane and the ionic concentration in the cell, is caused by the closure of the voltage-gated sodium channels and the opening of the potassium channels.

3) Hyperpolarization, when excessive potassium ion efflux occurs as a result of some open potassium channels increasing potassium permeability and causing a drop in the membrane potential.

4) The action potential, which is a transient reversal of membrane potential that travels through the axon, comprises three phases that are described above.

To learn more about the action potential please click on the given link: brainly.com/question/4899353

#SPJ4

8 0

1 year ago

What are the three types of genetic variation?

wlad13 [49]

Answer:

3 types are recombination,mutation and immigration

7 0

3 years ago

To respond to a chemical signal, a cell must have a ? to which the signaling molecule can bind.

Sphinxa [80]

A cell must have an atom

4 0

3 years ago

each of the following molecules is processed by glycolysis to pyruvate. how much net atp is generated starting with each molecul

ki77a [65]

From glucose $2$ ATPs are produced.

ATP:

One glucose molecule is divided into two pyruvate molecules during glycolysis, requiring two ATP molecules while generating four ATP molecules and two NADH molecules.
For the cell to utilize as energy, glycolysis results in a net gain of two pyruvate molecules, two ATP molecules, and two NADH molecules.
Glucose breaks down into pyruvate and energy during glycoses
From glucose 6- phosphate to lactate 3 ATPs are produced.
$4$ ATPs are generated from which one is utilized when fructose $6$ phosphate is converted to fructose $1, 6-$ bisphosphate. So the net yield is $3$ ATP.