Cell Theory

Which of the following is NOT a premise of cell theory?

I. All cells arise from other cells.

II. All living cells require water for survival.

III. All living things are only composed of cells.

• I only

• II only

• I and II

• II and III

Which of the following is NOT a premise of cell theory?

I. All cells arise from other cells.

II. All living cells require water for survival.

III. All living things are only composed of cells.

• I only

• II only

• I and II

• II and III

Viruses infect cells and replicate themselves by utilizing various enzymes and cellular components of their host cell. Could you apply the same tenets of cell theory to viral replication?

• No, viruses do not strictly adhere to cell theory because they are not living organisms.

• No, viruses do not strictly adhere to cell theory because viruses do not directly come from other viruses; they require an intermediate cell to replicate.

• Yes, viruses strictly adhere to cell theory because an individual virus is a singular cellular unit.

• Yes, viruses strictly adhere to cell theory because from one virus directly arises another virus.

Viruses infect cells and replicate themselves by utilizing various enzymes and cellular components of their host cell. Could you apply the same tenets of cell theory to viral replication?

• No, viruses do not strictly adhere to cell theory because they are not living organisms.

• No, viruses do not strictly adhere to cell theory because viruses do not directly come from other viruses; they require an intermediate cell to replicate.

• Yes, viruses strictly adhere to cell theory because an individual virus is a singular cellular unit.

• Yes, viruses strictly adhere to cell theory because from one virus directly arises another virus.

Which of the following is a statement which comprises part of the modern cell theory?

• All organisms are composed of one or more cells

• Cells are the smallest units of life

• All cells come from pre-existing cells

• All of the above

• None of the above

Which of the following is a statement which comprises part of the modern cell theory?

• All organisms are composed of one or more cells

• Cells are the smallest units of life

• All cells come from pre-existing cells

• All of the above

• None of the above

Which invention played the biggest role in the discovery of cells by early scientists?

• magnifying glass

• lens

• eyeglasses

• compound microscope

Which invention played the biggest role in the discovery of cells by early scientists?

• magnifying glass

• lens

• eyeglasses

• compound microscope

The cell theory states that all organisms are made of cells; cells are the most basic unit of life; and

• all existing cells form by free-cell formation.

• all cells are eukaryotic.

• all existing cells are produced by other living cells.

• all cells have a nucleus.

The cell theory states that all organisms are made of cells; cells are the most basic unit of life; and

• all existing cells form by free-cell formation.

• all cells are eukaryotic.

• all existing cells are produced by other living cells.

• all cells have a nucleus.

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