AP BIOLOGY

THE CELL

TRANSPORT INTO AND OUT OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which molecule(s) are not found in the cell membrane?
A
Phospholipids
B
Channel Proteins
C
Nucleic Acids
D
Carrier Proteins
Explanation: 

Detailed explanation-1: -So, the correct answer is ‘Lignin’.

Detailed explanation-2: -So, the correct answer is ‘Lignin’.

Detailed explanation-3: -1 Expert Answer Your assumption is correct as nucleic acids are not found in cell membrane. They are not a structural component in the cell membrane. They are only found in ribosomes and the nucleus as either DNA or RNA.

Detailed explanation-4: -Four major phospholipids predominate in the plasma membrane of many mammalian cells: phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and sphingomyelin. The structures of these molecules are shown in Figure 10-12.

Detailed explanation-5: -Each of these cells is a discrete structure surrounded by a cell membrane and filled with a thick solution called cytoplasm. In human cells, most DNA is found in a compartment within the cell called a nucleus.

There is 1 question to complete.