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max2010maxim [7]
3 years ago
12

Why does electrical current always flow from areas of negative charge to areas of positive charge ?

Biology
1 answer:
AlladinOne [14]3 years ago
7 0
So, in metals where the charge carriers (electrons) are negative, conventional current is in the opposite direction as the electrons. ... In other conductive materials, the electric current is due to the flow of both positively and negatively charged particles at the same time.
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What do bacteria have in common with the cells of other living organisms?
butalik [34]

Answer:

Summary. Bacteria are like eukaryotic cells in that they have cytoplasm, ribosomes, and a plasma membrane. Features that distinguish a bacterial cell from a eukaryotic cell include the circular DNA of the nucleoid, the lack of membrane-bound organelles, the cell wall of peptidoglycan, and flagella.

4 0
3 years ago
Do male or female songbirds build the nest? please show source and evidence to support your answer
hjlf

Actually it is the females the mostly build the nests the males will help build it sometimes both males and females will build it but typically it is females and that goes for all birds.

"Females typically build nests, but sometimes both parents or just the male"

5 0
3 years ago
Which tectonic plate boundary caused the structure that is circled in the image?
pochemuha

Answer:

I'm guesssing it's B? I did this a very long time ago( two weeks ago)

Explanation:

Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges. While the process of forming these mountain ranges is volcanic, volcanoes and earthquakes along oceanic spreading ridges are not as violent as they are at convergent plate boundaries.

6 0
3 years ago
As towns grew, which Group was most likely to take responsibility for making improvements as the town?
Darina [25.2K]
I think the answer would be c
7 0
3 years ago
Read 2 more answers
When the polymerase chain reaction (PCR) is used to amplify segments of DNA, the sample is first heated, and then cooled, in cyc
baherus [9]

Answer:

At least 17 PCR cycles or 16 PCR cycles

Explanation:

As we know -

In one chain of  heating and cooling  of polymerase chain reaction (PCR), the strands of DNA gets doubled.

The general mathematical representation of this is

{2^n - (2 *  n)}

where "n" is the number of PCR cycles.

It is given that DNA strands  to be produced is 16 times the original quantity of DNA.

So the PCR cycle must be carried out at least 17 times in order to have DNA strand not less  than 16 times the original quantity of DNA

8 0
3 years ago
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