Ch. 8 Cells Structure and Function Review

Which of the following statements is part of the cell theory?

• Cells are composed of mostly empty space

• Cells are generally large enough for the unaided eye to see

• Only animals are made of cells

• All cells are produced from existing cells

The cells of all organisms contain DNa. In cells of which of the following groups is the cellular DNA enclosed in a nucleus?

• bacteria

• eukaryotes

• prokayotes

• viruses

Microscopes can be used to explore cells. Which of the following types of microscopes is used to produce a 3D image of the surface of a cell?

• Simple light microscope

• Compound light microscope

• Scanning electron microscope

• Transmission electro microscope

A number of scientists made contributions to cell theory. Which scientist was the first to use a light microscope to observe cells in a slice of cork?

• Robert Hooke

• Matthias Schleidien

• Theodor Schwann

• Anton van Leewenhoek

Lysosomes are organelles that contain enzymes. Which of the following is a function of lysosomes?

• Lysosomes build lipids, carbohydrates, and proteins

• Lysosomes package lipids, carbohydrates, and proteins

• Lysosomes break down lipids, carbohydrates, and proteins

• Lysosomes store lipids, carbohydrates, and proteins

Which of the following structures are typically present in both plant and animal cells?

• chloroplasts

• cell walls

• centrioles

• mitochondria

All cells contain cells membranes. Which of the following describes the composition of cell membranes?

• Cell membranes are composed of carbohydrate chains, allows materials to leave the cell

• Cell membranes are composed of cellulose, provides rigidity for the cell.

• Cell membranes are composed of cytoplasm, allows proteins to be excreted

• Cell membranes are composed of lipid molecules, provides flexible structure.

Which organelles allow plants to support heavy structures such as leaves and flowers?

• the cell membranes because they regulate what enters and leave the cells

• chloroplasts bc they convert sunlight -> chem energy

• golgi body bc it packages proteins for storage

• vacuoles bc they are filed with fluid, provides rigidity

Correct sequence of how cells produce and distribute proteins in eukaryotes?

• 1. Proteins modified on rough ER. 2. Proteins assembled on ribosomes. 3. Proteins modified, sorted, and packaged on Golgi bodies.

• 1. Proteins assembled on ribosomes. 2. Proteins modified on rough ER. 3. Proteins modified, sorted, and packaged on Golgi bodies.

• 1. Proteins modified, sorted, and packaged on Golgi bodies. 2. Proteins modified on rough ER; 3. Proteins assembled on ribosomes

• 1. Proteins modified on rough ER; 2. Proteins modified, sorted, and packaged on Golgi bodies; 3. Proteins assembled on ribosomes.

A cell is placed in isotonic solution. How does the cell maintain homeostasis in this environment?

• There is no movement of water molecules.

• Water moves from higher concentration to lower

• Water moves from lower concentration to higher

• Water moves in both directions