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Flashcards in Chapter 3 Deck (112)
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92

During what phase of the cell cycle does DNA replication occur?

S phase

93

What is the region near the middle of a chromosome that represents the attachment of two arms of a chromosome which are termed chromatids?

The centromere

94

An intravenous solution that is labeled isotonic can be what to a patient?

Hypotonic

95

What has chemicals the direct metabolic processes as well as reproduction?

DNA

96

Two major parts of the cell are the nucleus and the... ?

Membrane

97

Osmotic pressure is a force that what?

Attracts water towards the higher pressure (concentration)

98

Is endocytosis passive or active?

Active

99

True or false: Lysosomes degrade bacteria and worn cells, and can cause disease by destroying normal tissues

True

100

The cristae are the inner portions of that what?

Mitochondria (the mitochondria inner surface is lined with folds called cristae which contain enzymes uned in energy production by sythesis of nucleotides such as ATP)

101

True or false: Smooth endoplasmic reticulum has a significant function in protein sythesis

False (the term smooth is to indicate the absence of ribosomes which are the sites for protein synthesis)

102

What is important for producing the fibers that move the chromosomes during cell division?

Centrioles

103

Filtration occurs when particles are forced through a membrane because of what?

HIgh hydrostatic or water pressure.

104

One mechanism in the skin that prevents cells from becoming loose and separating is the presence of junctions called what?

Desmosomes

105

In biological systems, water pressure is called what?

Hydrostatic pressure

106

At equilibrium there is movement of molecules in all directions, but the concentrations of the particles is what?

The same at all points

107

True or false: Hydrogen peroxide is a chemical toxic to most cells and is produced by some human cells.

True

108

The ability of leukosyted to engulf bacteria is due to the process of what?

Phagocytosis

109

Which of the following human cells do not have a flagellum? Sperm, kidneys, intestine, testes.

Intestine

110

A combination of a sugar with a protein is a what?

Glycoprotein

111

The centriole functions in what?

Cell division

112

A human cell membrane is comprised of the following except which one? Lipids, proteins, carbohydrates, nucleic acids.

Nucleic acids

113

Chromosomes align midway between centrioles during what phase of mitosis?

Metaphase