Exam 2: Foundations: The Cell

During ________, the centromere of each chromatid pair separates and the daughter chromosomes are pulled toward opposite ends of the cell, along the chromosomal microtubules.

Figure 2.1 Using the figure above, answer the following questions. -What is the anatomical term for Label O?

Which of the following is a non-membranous organelle?

At intervals, the DNA wind around special proteins, forming a complex called ________; this complex may also coil around other special proteins.

The mitochondrion is enclosed by a double membrane with numerous folds, or cristae, in the inner membrane; the fluid matrix of these organelles contains important metabolic enzymes.

How do peroxisomes differ from lysosomes?

The cytosol contains a high concentration of ________ ions, while the extracellular fluid usually contains a high concentration of ________ ions.

Which of the following describes phospholipids in the plasma membrane?

Predict the consequences of non-functional cilia in the respiratory airways.

Which of the following is a passive process for material movement across a plasma membrane?

What is cytokinesis? What is its role in the cell cycle?

Active transport is an energy-requiring process whereby ions and possibly other materials are moved across a membrane by carrier proteins, which work despite an opposing concentration gradient.

A passive process that involves the movement of water (solvent)molecules toward solute concentrations across a membrane is called facilitated diffusion.

Thick filaments ________.

Which of the following is a cylindrical structure composed of short microtubules?

Figure 2.1 Using the figure above, answer the following questions. -What is the anatomical term for Label Q?

An active process for transporting extracellular fluid, such as water and small molecules, across a plasm membrane is ________.

At structures called ________, two cells are held together by membrane proteins that function as a narrow passageway, allowing ions, small metabolites, and regulatory molecules to pass from cell to cell.

A major function of the Golgi apparatus is ________.

The protein-synthesizing organelles are the ________.