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| smallest fundamental unit of all living things |
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| T or F: Cells are only found in animals |
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All cells contain:
a) gelatinous substance composed of water
b) protein
c) sugar
d) acids
e) fats
f) various minerals
g) all of the above
h) all but c and d |
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| surrounds and protects the cell; also regulates what passes in and out of it |
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| Controls the operations of the cell. It directs cell division and determines the structure and function of the cell |
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| rod-like structures within the nucleus |
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| Each human body cell, except ___ cells, contains ___ pairs of chromosomes. |
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| Sex cells, like ____ and ____, contain 23 (a. pairs of b. unpaired) chromosomes. |
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| When an egg and sperm unite to form an embryo, each cell of the embryo has ___ chromosomes or ___ pairs of chromosomes. |
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| a region found in an orderly sequence on every chromosome--contains DNA |
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| Sperm is the shortened term for ______. |
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| a chemical found in genes that regulates the activities of the cell according to its sequence on each chromosome |
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| T or F: DNA is responsible for cell division and synthesis of proteins |
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| photograph of an individual's chromosomes--arranged in size, shape, and number. |
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| can determine if chromosomes are normal |
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| puncture of the sac around the fetus for the removal of fluid and cells |
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| The 23rd pair of chromosomes reveals the ____. A normal male will have ____, and a normal female will have ___. |
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| When there is an extra copy of chromosome 21 |
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| A patient who has an extra copy of chromosome 21 has a condition known as _______. |
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Characteristics of Down syndrom include:
a) flat nasal bridge
b) upward slant of the eyes
c) protruding tongue
d) mental deficiency
e) heart defects
f) all of the above
g) all but c |
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| A karyotype in a Down syndrome patient will show ____ chromosomes. |
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| another name for Down Syndrome |
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| T or F: As a mother's age increases, the bigger chance she has of chromosomal abnormality |
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| Combined form meaning cell |
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| includes all the material outside the nucleus that is enclosed by the cell membrane--it carries on the work of the cell and contains the apparatus to supply the chemical needs of the cell |
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| contracting; transmitting |
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| In a muscle cell, the cytoplasm is responsible for _______. In a nerve cell, the cytoplasm is responsible for _________. |
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| small, sausage-shaped bodies that act like miniature power plants to produce energy by burning fuel in the presence of oxygen |
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