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xz_007 [3.2K]
2 years ago
14

How do multiple human body systems work together to cause muscle contraction and movement of the body?

Biology
1 answer:
Brrunno [24]2 years ago
5 0
Our muscular system works alongside with nerve impulses, the muscles and of course, the brain cells too. Muscle contractions happen when these three works all together. Nerve impulses are triggered by different stimuli and once the body senses, movement becomes possible as the brain sends the muscles the signal to move.
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This is any multicelluar living thing that obtains energy from sunlight or makes its own food
Anika [276]

Answer:

yeah there is

Explanation:

plants are multicellular organisms that make food from sunlight

7 0
2 years ago
HELP!! DNA was isolated from water samples taken from six different sites. This gel
VladimirAG [237]

After running DNA in a gel, bands of different sizes and species might appear. <em>Scientists know silver carp are at North Shore site 1 because one of the bands in lane 1 matches a band in the positive control (Option C). </em>

<h2>Gel</h2>

When DNA was isolated and run in a gel, many bands migrated to different points.

These bands were the different-sized fragments of DNA samples from different species from the six sites.

<em>Researchers wanted to figure out where the silver carp is. </em>

To do it, they needed to identify the bands on the gel that belonged  to the silver carp DNA, so they included negative and positive controls to make comparisons.

<h3>Positive and negative Controls</h3>

Negative and positive controls guarantee the interpretations of the results.

  • The positive control shows the band sizes that belong to the silver carp DNA.

<em>Any</em><em> band</em><em> in the sampling sites that</em><em> matches</em><em> one of the </em><em>positive control</em><em> bands indicates that the species is present at that site.</em>

  • The negative control is the opposite. It is the absence of the species' DNA.

<h3>Results interpretation</h3>

As we can see, there are four sites where the bands match one of the bands of the positive control. These are,

  1. North shore site 1
  2. Chicago site 1
  3. Calumet site 1
  4. Calumet site 2

This means that at these four sites, the silver carp is present.

<em>So scientists know silver carp are at North Shore site 1 because one of the</em><em> bands</em><em> in </em><em>lane 1</em><em> matches a band in the </em><em>positive control</em><em> (Option C). </em>

By looking at the lane of the North Shore site 1, we can also see another band (Thinner and grey). But this band does not match either of the positive control bands. This result suggests that the grey band belongs to another species' DNA.

You can learn more about gel electrophoresis at

brainly.com/question/9437877

brainly.com/question/895793

4 0
2 years ago
4. PART B: Which quote from the text best supports the answer to
alex41 [277]

Answer:

C

Explanation:

.

5 0
2 years ago
FUN FACT:<br> the Swine flu was a strand of Coronavirus
DanielleElmas [232]

Answer:

thats not scary at all

Explanation:

jk it is

4 0
2 years ago
HELPP FAST 20 POINTS AND BRAINLIEST ANSWER i need 2 answers tho
zhuklara [117]
I only have an answer for number 24, I'm sorry! But one piece of evidence is the DNA sequences, they have discovered that humans and monkeys/apes share a common ancestor through DNA. Another would be fossils, scientists have fossils to show great similarities in the skull and jaw structure, along with the legs, comparing to humans.
6 0
2 years ago
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