Which of the following statements best supports the idea that certain cell organelles are evolutionarily derived from symbiotic prokaryotes living in host cells?...
a. The process of cellular respiration in certain prokaryotes is similar to that occuring in the mitochondria and chloroplasts.
b. Mitochondra and chloroplasts have DNA and proteins that are very similar to those in eukaryotes.
c. Mitochondria and eukaryotes have similar cell wall structures
d. Like prokaryotes, mitochondria have a double membrane
e. Mitochondria and chloroplasts have DNA and ribosomes that are similar to those of prokaryotes.
Which of the following cell organelles is not bounded by a membrane?
a. centrosome
b. golgi apparatus
c. cell nucleus
d. mitochondrion
e. peroxisome
2007-04-05 08:18:07 · 3 answers · asked by Samarasy f 2 in Science & Mathematics ➔ Biology
E
Not A - respiration isn't in chloroplasts
Not B - should be prokaryotes
Not C - no cell walls in these organelles
Not D - prokaryotes don't have a double membrane
A A centrosome is a microtubule organizing center. Not membrane-bound.
2007-04-05 08:24:12 · answer #1 · answered by ecolink 7 · 1⤊ 0⤋
1) E (C looks right but is trick question unless you made a typo!)
2) A
2007-04-05 15:29:42 · answer #2 · answered by jmh11x2 2 · 0⤊ 0⤋
1. E
2.B
2007-04-05 15:27:20 · answer #3 · answered by Carpe Diem (Seize The Day) 6 · 0⤊ 0⤋