All categories

2 years ago

Why does DNA flow toward the positive electrode of the gel chamber?

Biology

1 answer:

Digiron [165]2 years ago

6 0

Answer:

DNA molecules have negative charges, and so when placed in an electric field they migrate toward the positive pole.

Explanation:

Electrophoresis is a technique that <u>uses differences in electrical charge to separate the molecules in a mixture</u>. DNA molecules have negative charges, and so when placed in an electric field they migrate toward the positive pole. The rate of migration of a molecule depends on two factors, its shape, and its charge-to-mass ratio.

A gel, which is usually made of agarose, polyacrylamide, or a mixture of the two comprises a complex network of pores, through which the DNA molecules must travel to reach the positive electrode. The smaller the DNA molecule, the faster it can migrate through the gel. Gel electrophoresis, therefore, <u>separates DNA molecules according to their size.</u>

You might be interested in

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B

Kobotan [32]

Answer:

The bulging eyes of most frogs allow them to see in front, to the sides, and partially behind them. The eyes help push the food down its throat. Eyes positioned atop the head give frogs a field of vision of almost 180 degrees. This peripheral vision helps them spot predators and prey.

Explanation:

4 0

2 years ago

Read 2 more answers

Structural proteins that typically assemble into large cables or threads, to provide mechanical support to cells or organisms ar

ollegr [7]

Answer:

Fibrous

Explanation:

Proteins are assembled according to their functions. Fibrous proteins usually provide protection and support to cells. They are made up of polypeptides that have elongated shape and assembles in large cables or threads. These proteins are differentiated from globular proteins by their globular form and repeated units of amino acids.

For example the fibrous proteins involved in horns, hair and nails is alpha-keratin. Elastin found in skin and ligament is also a fibrous protein. Collagen includes collagen fibrils that have tensile strength of steel is also a fibrous protein found in cartilages and bones.

7 0

2 years ago

When an organism consumes other organisms for food they are?

lianna [129]

Answer:

Consumer

Explanation:

Producer An organism that can make its own food

Consumer An organism that obtains energy by feeding on other organisms

herbivores consumers that eat only plants

carnivores consumers that eat only animals

4 0

3 years ago

Read 2 more answers

The graph shows the rate of alcoholic fermentation for an aerobic bacterium at different temperatures.

yuradex [85]

The second option since the fermentation occurs best at that temperature and you can narrow down a more precise temperature.

3 0

2 years ago

Step 1- Investigative Question

larisa86 [58]

Answer:

Eggshells are made of calcium carbonate. If you soak an egg in vinegar the eggshell will absorb the acid and break down, or dissolve. The calcium carbonate will become carbon dioxide gas, which will go into the air.

Explanation:

It will bounce.

I believe that it is testable because you can do it at home.

Independent variable is vinegar.

7 0

2 years ago