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satela [25.4K]
2 years ago
15

Could a teacher use ink chromatography to determine whether or not a student has changed his or her answers after a test has bee

n graded and returned? Explain your answer.
Biology
1 answer:
USPshnik [31]2 years ago
8 0

Answer:

Yes, ink chromatography can be used by the teacher to find out whether or not a student has changed answers after a test has been graded.

Explanation:

Ink chromatography is a procedure of separating out of the desired ink from the mixture of various other types of inks or dyes.  When any ink is mixed with any solvent meant for it, then it dissolves and may be distinguished from the other ink. Also another fact is helpful, which indicates that some ink are water soluble and some are alcohol soluble. Different types of ink pen uses various types of inks, when this is mixed with certain solvents the components of the mixture thus obtained forms a banding pattern which is very unique to that particular. This is also called ink chromatograph.

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A scientist has discovered a new organism and wishes to classify it based on morphology and genetics. While he is waiting on the
Ipatiy [6.2K]

Answer:

tentatively group it with birds and speculate that the trait shared only with bats is a derived rather than an ancestral trait with bats.

Explanation:

The scientist after his observation should tentatively classify this organism with birds and the the second end of calculating the other morphological traits which makes it possess the likely bat traits to be ancestral.

According to scientists, most widely used modern systematic practice

depends upon the assumption that a change from character in one species

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In this scheme, there are no independently derived parallel evolutionary changes,

nor convergences from a variety of states to a single one. Therefore, when two organisms share a

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Also using the parsimony principle, a scheme of common ancestry for all the species is derived that uses all the characters that have been observed.

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2 years ago
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A patient with a cancerous tumor may seek treatment for his condition from a physician whose specialty is . . A.geriatrics. B.ne
Diano4ka-milaya [45]
The answer is D.) Oncology
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2 years ago
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During strenuous exercise, anaerobic conditions can result if the cardiovascular system cannot supply oxygen fast enough to meet
GaryK [48]

Answer:

Glucose utilization would increase a lot.

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Choose elements that classify the iroquois constitution as a primary-source document.
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Please help me with this science question
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to prevent food poisoning and to prevent food decay

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