Question

True/False question:

1. "Blind" experiments are designed to reduce the possibility that the outcome of an experiment might be affected by the power of suggestion.
2. A stratified epithelium is often composed of multiple layers of cuboidal or squamous epithelial cells, and usually located in body regions to provide protection.
3. All eukaryotic cells have a plasma membrane composed of a phospholipid bilayer.
4. All waste, raw materials, and sources of energy for a cell must enter and leave the cell by passing through the plasma membrane.

Answer 1

True/False question:

1. "Blind" experiments are designed to reduce the possibility that the outcome of an experiment might be affected by the power of suggestion.

TRUE

(To avoid false positive or negative results inspired by the expected assumptions, BLIND experiments are carried out.)

2. A stratified epithelium is often composed of multiple layers of cuboidal or squamous epithelial cells, and usually located in body regions to provide protection.

TRUE

(A stratified epithelium is usually composed of more than one layer of epithelial cells such as squamous, cuboidal or columnar. Stratified epithelium plays a protective and mechanical role.)

3. All eukaryotic cells have a plasma membrane composed of a phospholipid bilayer.

TRUE

(All eukaryotic cells have a plasma membrane, composed of a phospholipid bilayer with embedded proteins and this membrane separates the internal contents of the cell from the surrounding environment.)

4. All waste, raw materials, and sources of energy for a cell must enter and leave the cell by passing through the plasma membrane.

FALSE

(Plasma membrane is selectively membrane, i.e. only selected solutes or materials can pass through it, not all)