Human Anatomy Unit 2: Cells and Tissues
What elements make up 96 percent of the body's weight?
Carbon, hydrogen, oxygen, and nitrogen
When a person is severely burned, fluid accumulates in pockets of skin called blisters. Which of the following cellular structures has been damaged and is the ultimate cause of fluid accumulation?
Plasma Membrane
Which organelle synthesizes proteins that are used in the cytoplasm?
Ribosomes that are free within the cytoplasm
Which part of the plasma membrane is hydrophobic?
The phospholipid "tails"
The structural and functional unit of all living things is the...
cell
Cellular material located outside the nucleus yet inside the plasma membrane is the...
cytoplasm
Nutrients and ions can pass directly from cell to cell through special membrane junctions known as...
gap junctions
The phospholipid tails are ________, which make the plasma membrane impermeable to water.
hydrophobic
Rheumatoid arthritis is a disease in which acid hydrolase enzymes escape from leaky cellular organelles, causing pain and a burning sensation in joints. The leaky organelles from which these acid hydrolase enzymes escape are the...
lysosomes
What is the arrangement of the phospholipids a substance encounters as it passes through the plasma membrane?
phospholipid heads, phospholipid tails, phospholipid tails, phospholipid heads
The membrane connections that prevent the leaking of fluid between cells are called...
tight junctions
Type of cell junction, anchor adjacent cells together and prevent cells from being pulled apart.
Desmosomes
What process permits absorption of glucose into cells?
Facilitated Diffusion
Cell Theory
Fundamental concept of biology that states that all living things are composed of cells
What type of membrane junction allows ions to pass directly from the cytoplasm of one cell to the cytoplasm of the adjacent cell?
Gap Junction
Which of these organelles is responsible for forming secretory vesicles?
Golgi Apparatus
