Exam 3: The Cellular Level of Organization

What organelles would be enhanced in a cell that produces digestive enzymes and secretes them into the intestine? Why?

Many proteins in the cytosol are ________ that accelerate metabolic reactions.

________ are responsible for identifying and digesting damaged or denatured proteins.

A defense cell engulfing a bacterium illustrates

The endoplasmic reticulum is an example of a(n) ________ organelle.

Proteins of the plasma membrane carry out all of the following functions except

The process by which molecules such as glucose are moved into cells along their concentration gradientwith the help of membrane-bound carrier proteins is called

The process of protein formation directed by mRNA is called

Most of the ATP required to power cellular operations is produced in the

The control center for cellular operations is the

The extracellular fluid in most tissues is called ________ fluid.

________ is a mutated regulatory gene that causes cancer.

The "t" in tRNA stands for

Peroxisomes

Assume that the import of a particular amino acid across the plasma membrane is observed (1) to occur onlydown its concentration gradient and (2) to slow when a different but similar amino acid is added to the extracellular fluid. The movement of the amino acid through the membrane is most likely by

The stage in a cell's life cycle in which the cell performs its normal functions and prepares for divisionis called

If a cell lacked the enzyme DNA polymerase, it could not

Figure 3-1 The Plasma membrane Use Figure 3-1 to answer the following questions. -Which structure has a "gate" to control transport?

The "m" in mRNA stands for

The tails of a phospholipid molecule in a plasma membrane are