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Tutor profile: Sheikh K.

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Sheikh K.
Tutoring/teaching experience for 6+ years
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Questions

Subject: Basic Chemistry

TutorMe
Question:

How are pH and pOH related in acid-base chemistry?

Inactive
Sheikh K.
Answer:

pH refers to the concentration of hydrogen (H+) or hydronium ions (H3O+) and pOH refers to the concentration of hydroxide ions (OH-). The two are related as pH x pOH = 10^(-14). With the pH scale, a lower pH indicates a higher concentration of hydrogen ions and means a solution is more acidic. A higher pH indicates a lower concentration of hydrogen (thus higher concentration of hydroxide) and means a solution is more basic/alkaline.

Subject: Biology

TutorMe
Question:

What are the similarities and differences between mitosis and meiosis?

Inactive
Sheikh K.
Answer:

Both mitosis and meiosis are referring to cell division. Mitosis is the cell division of your somatic cells (your normal body cells) whereas meiosis is the cell division of your germ cells (like the sperm and egg). What helps me differentiate between the two is to think of meiosis being the process the helped make "me" ("me"iosis). Both processes start with interphase where the cell is growing and making sure it is appropriate for division and both go through the same steps: prophase, metaphase, anaphase, and telophase. However, in meiosis all of these steps occur twice and in the first round of prophase, genetic recombination occurs. In mitosis, the end result is 2 identical daughter cells with the normal, diploid number of chromosomes (46 in humans). In meiosis, the result is 4 different haploid (half) number of chromosomes (23 in humans).

Subject: Anatomy

TutorMe
Question:

What do the anatomical terms "adduction" and "abduction" mean?

Inactive
Sheikh K.
Answer:

Adduction means to move a limb (or other body part) TOWARDS the midline of the body; it helps me to think about it as "adding to" the middle ("add"uction). Abduction is to move a limb AWAY from the midline of the body; I like to think of it as "abducting" it away from the body.

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