CELLULAR BIOCHEMISTRY QUESTIONS AND ANSWERS

Unifying characteristics of the cell - ANSWER 1. Plasma membrane
2. Cytoplasm containing cytosol
3. Metabolites, coenzymes, ribosomes, proteasomes
4. DNA (nucleus or nucleoid)

Prokaryotic cell characteristics - ANSWER 1. Bacteria and archaea
2. No true nucleus
3. No specialized organelles in the cytoplasm
4. Reproduce asexually by cell division (fission)

Eukaryotic cell characteristics - ANSWER 1. Single-celled: yeasts, moulds,
and protozoa
All multicelled animals
2. Membrane-bound nucleus
3. Specialized organelles in cytoplasm
4. Reproduce by mitosis/cytokinesis, and meiosis

Compartmentalization - ANSWER Distinct sub-cellular compartments and
organizations that allow chemical reactions that require different environments
to occur simultaneously

Cell Theory - ANSWER 1. All organisms consist of one or more cells.
2. Cells are the smallest units characteristic of life.
3. All cells arise from pre-existing cells

Components of plasma membrane - ANSWER Complex lipid bilayer,
phosphate and carb components, and proteins

Plasma membrane function - ANSWER 1. Maintain physical integrity of the
cell.
2. Facilitate the entry of nutrients, ions, and other molecules