<span>Ions are another name for charged atoms. Some elements are electropositive, and some are electronegative. Electropositive elements such as metals like to give up electrons, thus taking on a positive charge. Electronegative elements such as chlorine attract electrons, so they become negative. When electropositive and electronegative atoms meet and exchange ions, they take on opposite charges. Because positive and negative charges attract, these charged atoms become attracted to one another. This attraction forms an ionic bond that keeps the ions together.</span>
Answer:
When we look at reproduction too they are similar. They both produce gametes that fuse to form a zygote. They both have DNA that replicates to produce copies of itself.
Answer:
The correct answer is c. detergent is used to break apart plant cells to extract DNA.
Explanation:
Here we are talking about DNA isolation in E.coli and detergent is used to break apart the bacterial cell membrane by destabilizing the cell membrane. Detergent disintegrates the proteins present in the cell membrane which causes the rupture of membrane releasing the cell extract outside the cell.
Detergent is not able to break plant cell because it is made up of cellulose and require blending or mashing. Detergent can only be used to disintegrate the cell membrane because only cell membranes contain lipids and proteins.
Hence, the correct answer is c. detergent is used to break apart plant cells to extract DNA.
Answer:
Testing a hypothesis by experiment.
Explanation:
Hypothesis is a proposed explanation for scientific observations. And what's really important about a hypothesis is that, when written correctly, it helps create a well-designed experiment.
The two go together like peanut butter and jelly, movies and popcorn, and rock and roll. They not only complement one another but are also specific to each other. This is because an experiment is specifically designed to test a given hypothesis. Experiments are certainly fun to perform, but that's just a bonus for us! Their main purpose is to see whether our predictive statements, our hypotheses, are supported or not.
But even with a solid hypothesis, designing an experiment isn't always easy because there's a lot to take into consideration. So, let's take a look at the process to see how we would go about setting up our experiment based on what we're trying to test.
