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Sav [38]
3 years ago
13

Explain How an immune system response starts after a macrophage attacks a pathogen || I need it fast please help

Biology
1 answer:
dybincka [34]3 years ago
5 0
After the macrophage fails the Helper T Cell stimulates the B cells if pathogen is extracellular and Cytotoxic T Cells if the pathogen is intracellular. Once the pathogen is killed the B Cells create Memory B Cells and the Killer T Cells create memory T Cells.
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A hiker crosses topography near the sea that has low elevation and low relief and then climbs up steeply to reach a
gladu [14]

Answer:

mountain and coastal plains

Explanation:

i think it would be coastal plains because the area with low elevation is near the sea. only one answer has coastal plains in it, so use process of elimination. additionally, mountain makes sense since theyre usually steep and end in a peak.

7 0
4 years ago
The myelin sheath on a neuron allows nerve impulses to be faster because
blondinia [14]
Axons with large diameters conduct impulse faster than those with small diameters. Also Myelinated axons conduct impulse faster than unmyelinated axons. Axons with the largest diameter are all myelinated, therefore they are capable of salatory conduction (Impulses jump from one myelinated node to another). The smallest diameter axons are unmyelinated, so their conduction is continuous.
I hope this helps. :) :)
3 0
3 years ago
List and briefly describe earths compositional layers
Semmy [17]

Answer:

Compositional Layers

Layer Depth

Crust 0-100km silicates

Mantle 100-2900km iron and magnesium silicates

Core 2900-6370km metals

Hope this helps!!!

6 0
3 years ago
The spoon a conductor or insulator
tia_tia [17]
Conductor because spoons are metal which will conduct electricity.
7 0
3 years ago
Read 2 more answers
A weakness or slight muscular paralysis is known as:
DerKrebs [107]

Answer:

paresis

Explanation:

refers to a condition in which muscle movement has become weakened or impaired. You may also sometimes see it referred to as “mild paralysis” or “partial paralysis.” Although paresis affects your muscles, it usually occurs due to nerve damage.

3 0
3 years ago
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