Human A&P I - Cells

What is the basic unit of structure and function in the body?

• Cell

• Tissue

• Organ

• System

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Cells are measured in ________.

• units

• meters

• liters

• grams

Which of the following are the three major parts of a cell?

• Nucleus, Cytoplasm, Cell membrane

• Nucleus, Mitochondria, Ribosome

• Cell wall, Cytoplasm, Nucleus

• Cell membrane, Ribosome, Mitochondria

Tags

NGSS.MS-LS1-2

The function of the cell membrane is to:

• Protect the cell and control what enters and leaves

• Produce energy for the cell

• Store genetic information

• Synthesize proteins

Tags

NGSS.MS-LS1-2

The cell membrane is composed of a ________ in which protein, carbohydrate, and cholesterol molecules are embedded.

• phospholipid bilayer

• single lipid layer

• protein sheet

• carbohydrate layer

What is the function of Channel Proteins in the plasma membrane?

• They catalyze metabolic reactions directly

• They allow a particular molecule or ion to cross the plasma membrane freely

• They combine with a substance and help it move across the membrane

• They have a specific shape that allows a specific molecule to bind with it

Carrier Proteins combine with a substance and help it move across the _______.

• membrane

• cytoplasm

• nucleus

• ribosome

Cell Recognition Proteins are connected with which molecule for specific recognition?

• Lipid

• Carbohydrate

• Protein

• Nucleic Acid

What is the role of Receptor Proteins in the plasma membrane?

• They catalyze metabolic reactions directly

• They allow a particular molecule or ion to cross the plasma membrane freely

• They have a specific shape that allows a specific molecule to bind with it

• They combine with a substance and help it move across the membrane

The cell membrane is selectively permeable. Small, charged molecules and ions cannot cross the membrane due to their _______.

• charges

• size

• shape

• temperature