Cell Pretest

Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?

• All living things are made of cells
• All cells come from other preexisting cells
• Cells form through spontaneous generation
• Cells are the basic structural and functional units of life

Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell membrane against the concentration gradient. How do these molecules get into the cell?

• passive transport by diffusion
• active transport using ATP
• passive transport by osmosis
• phagocytosis

Which type(s) of cells have genetic material that is contained in a nucleus?

• both bacteria and fungi cells
• only animal cells
• only protist cells
• both plant and animal cells

Which structures are common to all cells?

• golgi apparatus and ER
• plasma membrane and DNA
• flagella and cilia
• mitochondria and chloroplast

Which organelle converts sugar into energy in the form of ATP molecules?

• nucleus
• ribosome
• lysosome
• mitochondria

Tags

NGSS.HS-LS1-7

Where are you least likely to find water in the structure below?

• A
• B
• C
• E

Tags

NGSS.HS-ESS2-5

Why is the plasma membrane referred to as being selectively permeable?

• The membrane allows all materials to enter and exit the cell.
• The membrane controls what materials can enter and exit the cell
• The membrane only allows water and sugar to enter and exit the cell
• The membrane controls what materials enter the cell, but has no control over what materials exit  the cell

Which statement is  one of the fundamental principles of the cell theory?

•  All cells have a plasma membrane.
• Eukaryotic cells are larger than prokaryotic cells
• All living organisms are composed of one or more cells
• The genetic material in cells is DNA

Which invention from the 17th century allowed for the development of modern cell theory?

• light microscope
• computers
• x-rays
• the scanning electron microscope