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week 3 and 4
questions and answers
| Question | Answer |
|---|---|
| In the matrix of the plasma membrane, a variety of proteins are embedded. Some of these proteins serve as passageway for Na+ ions or glucose. These proteins are called | transport proteins |
| Cisternae of this organelle are continuous with the nuclear envelope. | rough endoplasmic reticulum |
| Of the following, the only organelle that has a double membrane structure is the | mitochondrion |
| The outer boundary of a human cell is called the | plasma membrane |
| A major function of the cell membrane is to | control what enters and leaves the cell |
| This organelle has both a cis and a trans face | Golgi apparatus |
| The inside of the cell is composed largely of a gel-like substance called | cytoplasm |
| This organelle is characterized by folded membranes called Cristae. | Mitochondria |
| Each hair follicle has a small bundle of involuntary muscles attached to it called the | arrector pili muscle |
| The fluid environment that fills the spaces between the cells of the body is called | extracellular matrix |
| The connective tissue membranes that line the spaces between bones and joints are called _____ membranes. | Synovial |
| The conducting unit of the nerve tissue is the | Neuron |
| The External Ear is composed of | Elastic Cartilage |
| The epidermis is composed of several types of epithelial cells. One type, called keratinocytes, become filled with a tough, fibrous protein called | Keratin |
| Which type of tissue has cube-shaped cells and can be found lining the kidney tubules? | simple cuboidal epithelium |
| The mixed secretions of sebaceous and ceruminous glands form a brown waxy substance called the | Cerumen |
| The basic determinant of skin color is | melanin |