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Amiraneli [1.4K]
2 years ago
6

Cell Differentiation and Specialization

Biology
1 answer:
aalyn [17]2 years ago
8 0

Answer:

cell

Explanation:

cell is functioning and structural unit for all living organisms.. they have their own different functions

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The spinal cord is made up of
skelet666 [1.2K]

Answer:

Grey and White Matter.

Explanation:

When looking at an image of trasnverse section of the spinal cord the grey matter is almost butterfly shapped and it has the central canal in the middle. The white matter is surrounding the butterfly shaped, grey matter.

4 0
3 years ago
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What are the limitations of electric impulse mechanism?​
earnstyle [38]

Answer:

The limitations that nerve impulses have are

Explanation:

1). The impulses can move only in one direction.This is because the nerves are structured to allow unidirectional flow.

2). The electrical impulses are quite short acting. The message is only sent in the presence of the stimulus.

5 0
3 years ago
A small rock that travels through space and hits our planet's surface is
vfiekz [6]
Meteorite, a larger stone is called a meteor
6 0
3 years ago
The ___________ is the layer of the skin made of epithelial tissue and the __________ is composed of dense connective tissue.
tatuchka [14]
The first one is epidermis, the second one is the dermis i believe, I hope this helps
7 0
2 years ago
8-3 Mechanisms of Transport. For each of the following statements, answer with a D if the statement is true of simple diffusion,
slamgirl [31]

Answer:

(a) Requires the presence of an integral membrane protein -F

(b) Solutes move down their free energy gradient in the direction of thermodynamic equilibrium - N

(c) Is not subject to saturation - N

(d) Requires the hydrolysis of

ATP - A except secondary active transport

(e) Is a way of establishing a difference in the concentration gradient of solutes across a membrane - D

(f) Applies only to small, nonpolar solutes - D

(g) Applies only to ions - A

(h) Transport can occur in either direction across the membrane, depending on the prevailing concentration gradient - D

(i) Has a positive G(Gradient) - D

(j) Usually has intrinsic directionality

Explanation:

Simple Diffusion is the movement of solutes from a region of higher concentration to a region of lower concentration through a semipermeable membrane.

When then is through a transmenbrane integral protein, it is a facilitated diffusion

Active transport uses chemicals (e.g ATP) to move ions against the concentration gradient (Lower to Higher concentration).

They are two types(Primary and Secondary Active transport). Secondary active transport do not require ATP

5 0
2 years ago
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