Cells & Cell Membrane

Which of these supports the cell theory as it is stated today?

• Cells must contain a nucleus
• All organisms are made of more than one cell
• All cells come from pre-existing cells
• Not all cells are alive

Under a microscope, what kind of cells lack membrane-bound internal organelles?

• Prokaryotes
• Eukaryotes
• Plants
• Animals

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

• X-rays 
• computers 
•  the light microscope
• . the scanning electron microscope

The combined observations of Mattias Schleiden, Theodor Schwann and Rudolph Virchow resulted in the formation of the cell theory. Which of the following is not part of the cell theory?

• All cells contain a nucleus. 
• All cells come from other living cells
• All living organisms are made of one or more cells.
• Cells are the basic unit of structure and function of all living things.

Which  structures are present in animal and plant cells?

• Vacuole, nucleus and cell membrane
• Nucleus, cell wall, cytoplasm
• Nucleus, cell membrane, cytoplasm
• Cell membrane, chloroplast, cell wall

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which of the following contain complex, membrane-bound organelles?
1. bacteria
2. viruses
3. eukaryotic
4. prokaryotic

• 1 and 2
• 2 and 4
• 3 only
• 4 only

How does a cell maintain homeostasis?

• Regulates what enters and leaves the cell
• Flexibility
• Protective barrier
• Structure and support

The cell membrane is selectively permeable, which means...

• All materials can enter and leave the cell
• Certain things can enter while others cannot
• The cell manually sorts through all materials
• Only certain cells can interact with the cell.

How many layers is the lipid bilayer?

• 1
• 2
• 3
• 4

What type of cell appeared first on Earth?

• Prokaryotic cells
• Eukaryotic cells