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Dima020 [189]
3 years ago
11

How is a cell a system , ANWSER IN YOUR OWN WORDS ?

Biology
1 answer:
-BARSIC- [3]3 years ago
5 0

Explanation: the movement of organelles and other substances within cells. Endoplasmic reticulum

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What is the effect of shape on the density of samples of the same material?
NeTakaya
It has no effect. Density of a substance is the same no matter the size or shape of the sample.
8 0
4 years ago
Does a crow move its head with its eyes fixed or does it move its head and eyes independently?
RUDIKE [14]

Answer:

A crow does move its head with its eyes fixed.

Explanation:

Birds Eyes Are Fixed, So Their Neck Compensates To Hold Vision Steady. If a bird is moving and its wants to keep its eyes looking at something while it is moving then its body must compensate.

4 0
3 years ago
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To study Earth’s interior, geologists often rely on indirect methods, such as evidence from fossils.
cestrela7 [59]

It is false that to study Earth’s interior, geologists often rely on indirect methods, such as evidence from fossils. They rely on seismic waves and such.

Explanation:

No, they use seismic waves.A seismic wave is an elastic wave caused by an pressure such as an earthquake or an explosion. Seismic waves may travel either along or near the earth's surface (Rayleigh and Love waves) or by the earth's interior (P and S waves).

5 0
3 years ago
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Knowing what tetanus toxin does to motor neuron activity, predict what would happen to the concentration of acetylcholine in the
jekas [21]
The tetanus is a disease caused by the bacterium Clostridium tetani. The Clostridium tetani is a normal inhabitant of the soil and can easily contaminate dirty wounds, especially those due to farm practices. In the body, these bacteria produce a toxin called tetanospasmin. The toxin enters the central nervous system which is the brain and spinal cord where it blocks the mechanisms that inhibit motor neurons from firing when a muscle is relaxed. With this inhibition removed, the neurons fire repeatedly and continually stimulates the muscle, causing painful and increasingly stronger muscle spasms. The masseter or jaw muscles are often the first muscles involved, and it is the spasm of these muscles that gives rise to tetanus' common name lockjaw, also called trismus. The muscles of the face, neck, back, and proximal limbs are also commonly affected. The contraction of the facial musculature leads to a characteristic facial expression with a teeth-baring grin and raised eyebrows. Contraction of the back muscles may cause the back to arch posteriorly.
6 0
3 years ago
The blank is a sensory organ
laila [671]

Answer:

skin

Explanation:

this is one of them. it has a sense of touch skin is a organ

8 0
3 years ago
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