Exam 3: Cell Structure and Function

Using the figure above, identify the labeled part. -Label F: ________

The _________________________ of a membrane is the property that determines its effectiveness as a barrier.

Microtubules

A substance known to cause cancer is referred to as a(n) _________________________.

_________________________ are permanent alterations in a cell's DNA.

In cells that are not dividing, chromosomes form a loose network of fibers known as _________________________.

Structurally, the plasma membrane

Because DNA replication produces molecules that are half-new and half-old nucleotides, the process is called _________________________.

Using the figure above, identify the labeled part. -Label U: ________

Membrane-bound proteins that allow recognition of a cell as "self" are called _________________________ proteins.

Briefly explain the process of active transport as it relates to the sodium-potassium pump.

The structure that allows locomotion in some cells is the _________________________.

Examination of a sample of cells reveals large numbers of mitochondria compared to most other cells. Which of the following is a likely reason for this?

Cellular reproduction is known as _________________________.

Synthesis of most ATP takes place in the

The process of forming a polypeptide from mRNA instructions is called

The peroxisome

Tubulin is to microtubules as myosin is to

Which of the following is a concept of the cell theory?

Osmotic pressure is determined by the _________________________ of solute molecules in a solution.