Question

10 multiple choice 5 points apoptosis, or \programmed cell death,\ is ________. abnormal responsible for creating twins dangerous responsible for removing unnecessary tissue such as the webbing between our embryonic fingers and toes 11 multiple choice 5 points which of the following is a principle of the fluid mosaic model of cell membrane structure? phospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains. the lipid bilayer is a solid at body temperature, thus protecting the cell. all proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell. phospholipids form a bilayer that is largely impermeable to water - soluble molecules. 12 multiple choice 2 points mitosis and cytokinesis are the same process. false true

Explanation:

• For question 10: Apoptosis is a normal, programmed process that helps in development, like removing embryonic webbing. It is not abnormal or dangerous in normal function and not related to creating twins.
• For question 11: In the fluid - mosaic model, phospholipids form a bilayer with a polar head and non - polar tails (two fatty acid chains, not three), and the bilayer is fluid at body temperature. Proteins are embedded or associated with the membrane in different ways, and the lipid bilayer is largely impermeable to water - soluble molecules.
• For question 12: Mitosis is the division of the nucleus, while cytokinesis is the division of the cytoplasm. They are different processes.

Answer:

1. responsible for removing unnecessary tissue such as the webbing between our embryonic fingers and toes
2. Phospholipids form a bilayer that is largely impermeable to water - soluble molecules.
3. False