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# Tutor profile: Christina A.

Christina A.
Current Medical Student

## Questions

### Subject:Health and Medicine

TutorMe
Question:

What are the two main causes of stomach ulcers?

Christina A.

Helicobacter pylori and NSAIDs.

### Subject:Biology

TutorMe
Question:

What are three differences between prokaryotic and eukaryotic cells?

Christina A.

Prokaryotic cells do not have a nucleus, while eukaryotic cells do. Prokaryotic cells do not cytoskeleton , while eukaryotic cells do. Prokaryotic cells have a single chromosome, while eukaryotic cells have paired chromosomes.

### Subject:Algebra

TutorMe
Question:

Consider that x = apples and y = cupcakes. If Janice has 4 apples, how many cupcakes will this have using this equation? 4x + 2y = 24

Christina A.

Solving for y knowing that x = 4. 4x + 2y = 24 4(4) + 2y = 24 16 + 2y = 24 Then subtract 16 from both sides. 2y = 8 Divide both sides by the 2. y = 4 Janice has 4 apples.

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