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goldenfox [79]
3 years ago
5

•Which best describes how an ionic bond forms ?

Biology
2 answers:
Lerok [7]3 years ago
5 0
The answer is D ! (:
Novay_Z [31]3 years ago
4 0

Answer:

One atom pulls an electron from another atom.

Explanation:

In Ionic bonds, donating and gaining of electrons takes places.

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In the classic Meselson and Stahl experiment, E. coli are first grown in 15N-enriched media (0th generation) and, subsequently,
mars1129 [50]

Answer:

The correct answer is - option e.)

Explanation:

The experiment that was performed by Meselson and Stahl was created to prove that DNA replication is a semiconservative process.

When Bacteria grow on 15N media they incorporate the isotype of nitrogen and after few generations, the culture moved to 14N media where it incorporates as they replicate in semi-conservative mode and one DNA strand comes from the Parent DNA.

The right option for question one is Option (e) Run as one band, at a position expected for DNA containing a 14N:15N ratio equal to 1.

6 0
2 years ago
2. What types of animals can be produced in a CAFO?
Anettt [7]

Answer:

1000 head of beef cattle, 700 dairy cows, 2500 swine weighing more than 55 lbs, 125 thousand broiler chickens, or 82 thousand laying hens or pullets

4 0
3 years ago
Read 2 more answers
After DNA fragments with matching sticky ends are temporarily joined by complementary base pairing, the union can be made perman
STatiana [176]

Answer:

The correct option is b. DNA ligase

Explanation:

DNA ligase is an enzyme that joins DNA fragments. If two DNA fragments or molecules have complementary ends, the ligase can join them together to form a single and intact DNA molecule, without interruptions. This is because the ligase enzyme seals the space between the molecules to form a single DNA fragment.  

The others enzymes have different functions:

DNA helicase is characterized by separating DNA from double strands into single strands and acts in DNA replication.

ATP methylase plays an important role in DNA replication when determining the beginning of replication that has already been replicated or not.

DNA polymerase is an enzyme that is responsible for catalyzing the polymerization of the new strand of DNA during the replication of this molecule.

3 0
2 years ago
After decades of studying extraterrestrial organisms on Triton, you and your colleagues have developed a pretty good cladogram (
Nutka1998 [239]

Answer:

The effect might be due to the gene expression.

Explanation:

The effect might be due to the variation in the gene expression in the organism. In this way, the variety of the genetic pool is likely to result in a diversity of the gene pool or genome. Because of the mutation and the environmental factors, there is likely to be a slight variation of the species. This results in a slight difference in the phenotypic expression.

5 0
2 years ago
Which correctly lists three features of a rock's grains that determine its texture?
kenny6666 [7]

Answer:

shape, pattern, size i took the test

Explanation:

7 0
3 years ago
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