Question

Multicellular colonies of plant cells adhere to each other primarily by ________, whereas multicellular colonies of animal cells are typically held together by ________. fusion of cellular membranes;

A. cell walls interlocking cellular shapes; large, calcified capsules
B. interlocking chloroplasts; interlocking mitochondria
C. cell walls; fused cellular membranes
D. cell walls; proteins Submit

Answer 1

Answer is option "D"

Explanation:

• A cell wall is a strong, protective structure that surrounds a plant cell. A cell wall can be up to 800 times thicker than the plasma membrane. It's composed largely of cellulose, a polysaccharide sugar that provides strength to the cell wall. If you've ever noticed how strong the bark of a tree is, that's because this bark is composed of dead cells with really tough cell walls.
• Proteins are long chains of amino acids. In other words, amino acids are like the links in a chain. The chain itself represents the protein molecule. Protein chains are then twisted and folded together in specific ways to create certain molecules.
• Hence, the right answer is option D " cell walls; proteins Submit".