Which substances can cross plasma membrane more easily?
Correct answer: C. Lipid soluble molecules
- A. Starch
- B. Protein
- C. Lipid soluble molecules
- D. Ions
Explanation
Lipid soluble molecules can cross plasma more easily than starch, protein, and ions. The plasma membrane is a phospholipid bilayer, which is made up of two layers of fatty acids. Lipid soluble molecules, such as oxygen, carbon dioxide, and fat-soluble vitamins, can dissolve in the fatty acids of the plasma membrane and cross the membrane easily.
Last updated
About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.