Question

question 56
cell membranes are found in.
a bacterial cells.
b animal cells.
c plant cells.
d animal and plant cells.
e all cells.
question 57
which pair of organelles contain dna?
a nucleus and lysosome
b mitochondria and chloroplast
c rough and smooth er
d golgi and nucleus
e nucleus and peroxisomes

Explanation:

For Question 56:

• All cells, whether prokaryotic (like bacterial cells) or eukaryotic (like animal and plant cells), have a cell membrane. It is a fundamental structure that encloses the cell, controls the movement of substances in and out of the cell, and provides a boundary between the cell's internal and external environments.

For Question 57:

• The nucleus contains the cell's main genetic material (DNA). Mitochondria and chloroplasts are semi - autonomous organelles. They have their own DNA, which is circular and similar to prokaryotic DNA. This is because of the endosymbiotic theory, which suggests that mitochondria and chloroplasts were once free - living prokaryotes that were engulfed by a larger cell. Lysosomes, rough and smooth ER, Golgi, and peroxisomes do not contain DNA.

Answer:

Question 56: E. all cells
Question 57: B. mitochondria and chloroplast