What is the percentage ?

What group of organisms do not have cell walls?

Marianna [84]

Animal cell do not have cell walls

5 0

3 years ago

How would the equilibrium change if the ocean became more acidic?

Artist 52 [7]

Answer: more H2CO3 is made

Explanation:

6 0

3 years ago

List and describe two functional groups you believe are most important to living things.

olya-2409 [2.1K]

Hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and sulfhydryl groups.

These groups play an important role in the formation of molecules like DNA, proteins, carbohydrates, and lipids.

Carboxyl abs Carbonyl help with Carbohydrates.

7 0

2 years ago

After a successful launch and return of a rocket, NASA and SpaceX noticed a strange gel like substance on the wing. Under the mi

wariber [46]

nonliving the heat from the hot plate is causing the gel like substance to move it's the same thing with liquid nitrogen how it seems to bounce off the floor it's because liquid nitrogen is super cold and the heat basically excites the electrons in the liquid nitrogen making it bounce off the floor same with the gel like substance the electrons in the gel substance are getting excited by the heat and jumping up and down but the substance itself is not alive

6 0

3 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. 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).

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.

Researchers wanted to figure out where the silver carp is.

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.

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

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,

North shore site 1
Chicago site 1
Calumet site 1
Calumet site 2

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

So 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).

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

3 years ago