Question

Which of these is the smallest?

A. cells

B. atoms

C. molecules

D. cell membranes
(7 Points)

A

B

C

D

Answer 1

B. atoms is the smallest among the options provided.

Here's a brief explanation of each:

- **Atoms** are the basic building blocks of matter and generally considered the smallest unit of an element.
- **Molecules** are made up of two or more atoms bonded together.
- **Cells** are the basic units of life and are composed of various molecules, including proteins and nucleic acids.
- **Cell membranes** are structures that surround cells, made up of lipid bilayers and proteins, which are themselves composed of molecules.

So, the correct answer is B.