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ozzi
3 years ago
8

Need help with this question. (Explain Ali's observation)​

Biology
1 answer:
FrozenT [24]3 years ago
4 0

Answer:

Bubbles in the water is the air that was displaced by water and leaving the surface of water

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PLEASE HELP! ASAP!!!
LUCKY_DIMON [66]
B. The bases in DNA in the nucleus. The way our nitrogenous bases are arranged in DNA (A, T, C, and G) code for traits.
6 0
3 years ago
Protein composes 10-30% of cell mass and is the basic structural material of the body. However, not all proteins are constructio
Andreas93 [3]

Answer:

Amino acids

Explanation:

Like a house, every molecule is formed of units (blocks) that determine their structure and function. Proteins have a diverse functions in the body and are very important in multiple biological processes.  Proteins are molecules called polymers (molecules formed by monomers), the simplest units of proteins are the amino acids (building blocks). The amino acids are bind together by peptide bonds and when the chain of amino acids is less than 30 is called peptide and more than 30 is called protein. Every amino acid has a special structure and the type and number of aminoacids determinate the structure and function of the protein.

8 0
3 years ago
Gel electrophoresis separates DNA molecules on the basis of size. Which of the following DNA molecules would move the slowest? (
Papessa [141]

Answer:

Option C

Explanation:

DNA fragments have negative charge and they move towards the positively charged electrode in  gel electrophoresis.

There is no difference in the charge carried by the DNA fragments as they all have the equal amount of charge on them.

The difference in speed of large and small molecules of DNA is due to their sizes.

Large DNA molecules do not pass easily through the pores of the gel while the smaller molecules  do not face any such hindrance and are easily passed through the gel . Therefore small DNA molecules move faster.

F plasmid has the largest size and hence it will move slowly.

Option C is correct

5 0
4 years ago
George W. Beadle and Edward L. Tatum refined the concept of the gene to state which of the following original ideas?
igor_vitrenko [27]

Answer:

one gene - one enzyme.

Explanation:

The Garrod's explain the hypothesis one gene enzyme and one enzyme. According to this hypothesis, the single gene codes for the single enzyme that plays an important role in the body metabolism.

The Garrod's hypothesis was experimentally performed by the George W. Beadle and Edward L. Tatum.  They performed the biochemical studies and genetic tests on Neurospora to explain the one gene one enzyme hypothesis.

Thus, the correct answer is option (a).

5 0
3 years ago
What is one way in which light waves are different from water waves
avanturin [10]
Water waves are mechanical waves which light waves travel in rays and doesn’t depend on motion.
5 0
3 years ago
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