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Tutor profile: Emma P.

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Emma P.
Tutor for 9 years!
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Questions

Subject: Chemistry

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Question:

You find a strange substance in the lab and decide to collect a sample! Upon further investigation, you realize the substance is uniform throughout and cannot be separated into other substances by physical means. What is this substance?

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Emma P.
Answer:

A compound or an element (particles of a compound never combine chemically with each other).

Subject: Biology

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Question:

Name and explain two key differences between plant and animal cells.

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Emma P.
Answer:

Here are a few differences that would make for a correct answer: • Animal cells are typically smaller than plant cells. While animal cells average 10 - 30 micrometers in size, plant cells are between 10 - 100 mm. • Animal cells contain no cell wall; this contributes to their spherical or globular shape, whereas plant cells have a semi-rigid cell wall for structure and flexibility. • Plant cells contain chloroplasts, organelles specific to plant cells that use chlorophyll– a pigment chemical– to conduct photosynthesis. Animal cells, on the other hand, create energy via cellular respiration. • All plant cells have a large vacuole, a membrane-bound organelle within the cytoplasm that help maintain homeostasis. Some (but not many) animal cells contain small vacuoles.

Subject: English

TutorMe
Question:

Edgar Allan Poe employs many literary devices in his poem, "The Raven". Please select one of these literary devices, provide an example from the text, and briefly explain how the device you selected is used to enhance the poem.

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Emma P.
Answer:

(Example answer) Alliteration – the repetition of similar sounds; "Once upon a midnight dreary, while I pondered weak and weary". Poe repeats the sounds /w/ and /n/ in this line to illustrate a dream-like cadence in his writing. This adds a musical quality to the speaker's nighttime wandering and attributes to the poem's haunting tone.

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