LS Chapter 2 Review

Who is credited with the discovery of cells under a microscope in the 1600s?

• Louis Pasteur

• Robert Hooke

• Anton van Leeuwenhoek

• Gregor Mendel

Which of the following is NOT one of the three main ideas of cell theory?

• All living things are made of cells.

• Cells are the basic unit of life.

• Cells can arise from non-living matter.

• All cells come from pre-existing cells.

Why is cell theory considered a model that is subject to change?

• Because it is based on opinions.

• Because new discoveries can alter our understanding of cells.

• Because it is outdated.

• Because it only applies to plants.

What is one key difference between eukaryotes and prokaryotes?

• Eukaryotes have a nucleus; prokaryotes do not.

• Prokaryotes are always larger than eukaryotes.

• Eukaryotes are always unicellular.

• Prokaryotes have membrane-bound organelles.

True or False: Prokaryotes can only be multicellular organisms.

• True

• False

Multicellular organisms have cells organized into:

• Tissues, which are then organized into organs.

• Organs, which are then organized into systems.

• Molecules, which are then organized into cells.

• Cells, which are then organized into tissues.

What are organelles?

• Small cells that can live independently.

• Membrane-surrounded structures in eukaryotic cells that perform functions.

• The outer layer of prokaryotic cells.

• The genetic material of a cell.

What does it mean if a membrane is semi-permeable?

• It allows all substances to pass through.

• It only allows certain substances to pass through.

• It does not allow any substances to pass through.

• It is completely solid.

Photosynthesis uses which of the following to produce energy?

• Oxygen to make carbon dioxide

• Water to make glucose

• Carbon dioxide to make oxygen

• Light energy to make glucose

Cellular respiration primarily occurs in which part of the cell?

• Nucleus

• Ribosomes

• Mitochondria

• Golgi bodies