Exam 3: Cells

An organelle that is a fluid-filled sac with inner partitions studded with enzymes is a mitochondrion.

Which of the following is not a component of the cell membrane?

Roughly how many cells are in the adult human body?

During _______, chromatids separate and become chromosomes that are pulled toward opposite ends of the cell.

If an isotonic saline solution is 0.9% NaCl, a 0.25% NaCl solution would be __________.

Cells are placed in a solution that causes them to absorb liquid until they burst. When some of the water is removed from the solution, newly added cells do not burst. The original solution was __________ to the cells, while the second was __________ to the cells.

Receptor-mediated endocytosis is another name for facilitated diffusion.

Why is the interior of a cell membrane oily?

Vesicles are formed mainly by folding of the __________.

All differentiated cell types in a human body arise through lineages of stem and progenitor cells.

Among other functions, lysosomesdetoxify alcohol and break down hydrogen peroxide.

What organelle houses enzymes that degrade cellular debris?

What is apoptosis?

During the metaphase of mitosis, chromosomes line up between the two centrioles.

A microfilament is made of tiny rods of actin protein.

Within the nucleoplasm, ribosomes are formed in a small dense body called the __________.

A cell that secretes abundant proteins, such as a cell in the pancreas secreting insulin, would have extra nuclei.

If a 5% dextrose solution is isotonic to blood, a 2% dextrose solution would be __________.

The genetic material (DNA) is the component of the cell that carries hereditary information.

Studies show that chronic psychological or emotional stress as well as clinical depression or obesity can stimulate telomere lengthening.