Question

I took a test and need help understanding what I missed and why.

1: Which of the following describes an organelle that both prokaryotic and eukaryotic cells have in common?

A:this organelle contains the cell's DNA and is where DNA replication occurs
B:This organelle is composed of a stack of membrane sacs where proteins are modified and stored.
C:This organelle extracts energy stored in glucose molecules to power cell functions.
D:This organelle is composed of protein and RNA and is used to make proteins for the cell.

Answer 1

A is the incorrect answer I Got

Answer 2

well i know it cant be A as Prokaryotic cells do not have DNA only RNA

Answer 3

Question 2
Sucrose and lactose are two carbohydrates that have the same molecular formula (C12 H22 O11). Which of the following describes why sucrose and lactose have different properties.
A:They are made up of different monomers.
B:They differ in how atoms are bonded to their hexagonal rings.(incorrect in a past test)
C:They differ in there arrangement of glucose. (also incorrect)
D:They are made of different combinations of monosaccharides

Answer 4

That's incorrect, @Geometry_Hater. Prokaryotes do have DNA, but it's not in a membrane-bound nucleus like in Eukaryotic cells. That's actually one of the most important differences between the two: "karyon" = nucleus.

Answer 5

okay so what is the correct answer for question 1

Answer 6

I think the answer for question one is C and I think the answer for question 2 is D.

Answer 7

The answer to question one cannot be C: mitochondria are a eukaryotic thing. Interestingly,according to the endosymbiont theory, mitochondria are probably ancient symbiotic bacteria that now live in eukaryotic cells as organelles.

Answer 8

is question 1 B??

Answer 9

I know B are lymosomes but to me it doesn't sound right

Answer 10

No, that's the golgi apparatus. Fancy membrane-related things are generally eukaryotic (one of the main features of eukaryotes is that they have membrane-bound organelles).

Answer 11

so it must be D the ribosomes. Right?

Answer 12

Yep! Both eukaryotes and prokaryotes have ribosomes :)

Answer 13

thanks. Just wondering but is question 2 D?

Answer 14

Sucrose is glucose + fructose, and lactose is galactose + glucose. I suppose that would mean they're made up of different combinations of monosaccharides.

Answer 15

Thank you so much

Answer 16

No problem.