,
,
,
,D) neoplastic
18. The activities of the cell are directed by which cell structure?
A) Cytoplasm
B) Organelles
C) Cell membranes
D) Nucleus
19. Enzymes that use oxidation to convert food materials into energy are found in
sausage-shaped structures called .
A) endoplasmic reticulum
B) ribosomes
C) mitochondria
D) Golgi apparatus
20. Mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and centrioles
are all examples of .
A) cell membranes
B) organelles
C) enzymes
D) None of the above
21. Choose the answer below that best completes the sentence: DNA is composed of
base chemicals called .
A) 4; adenine, thymine, guanine, cytosine
B) 3; nucleotide, deoxyribose, base
C) 2: chromosomes, proteins
D) None of the above.
22. Which of the terms below does not describe a method by which cells adapt to
changing conditions?
A) Hypertrophy
B) Hyperplasia
C) Increased enzyme synthesis
D) Necrosis
23. Dysplasia of epithelial cells sometimes results from which of the following?
A) Excessive sodium intake
B) Chronic irritation or inflammation
, C) Increased enzyme synthesis
D) Apoptosis
24. The function of lysosomes is to:
A) break down particles or worn-out cellular components.
B) convert food materials into energy.
C) produce digestive enzymes and antibody proteins.
D) aid in cell division.
25. A gene is one that produces an effect only in the homozygous state.
A) dominant
B) recessive
C) sex-linked
D) hemizygous
26. A gene expresses itself in either the heterozygous or the homozygous
state.
A) dominant
B) recessive
C) sex-linked
D) hemizygous
27. Genes carried on sex chromosomes are called genes.
A) dominant
B) recessive
C) sex-linked
D) hemizygous
28. A common abnormality in females, syndrome results from an absence
of one X chromosome.
A) triple X
B) Turner’s
C) Klinefelter’s
D) Down
29. syndrome occurs in males when there is an extra X chromosome.
A) Triple X
B) Turner’s
,
,
,D) neoplastic
18. The activities of the cell are directed by which cell structure?
A) Cytoplasm
B) Organelles
C) Cell membranes
D) Nucleus
19. Enzymes that use oxidation to convert food materials into energy are found in
sausage-shaped structures called .
A) endoplasmic reticulum
B) ribosomes
C) mitochondria
D) Golgi apparatus
20. Mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and centrioles
are all examples of .
A) cell membranes
B) organelles
C) enzymes
D) None of the above
21. Choose the answer below that best completes the sentence: DNA is composed of
base chemicals called .
A) 4; adenine, thymine, guanine, cytosine
B) 3; nucleotide, deoxyribose, base
C) 2: chromosomes, proteins
D) None of the above.
22. Which of the terms below does not describe a method by which cells adapt to
changing conditions?
A) Hypertrophy
B) Hyperplasia
C) Increased enzyme synthesis
D) Necrosis
23. Dysplasia of epithelial cells sometimes results from which of the following?
A) Excessive sodium intake
B) Chronic irritation or inflammation
, C) Increased enzyme synthesis
D) Apoptosis
24. The function of lysosomes is to:
A) break down particles or worn-out cellular components.
B) convert food materials into energy.
C) produce digestive enzymes and antibody proteins.
D) aid in cell division.
25. A gene is one that produces an effect only in the homozygous state.
A) dominant
B) recessive
C) sex-linked
D) hemizygous
26. A gene expresses itself in either the heterozygous or the homozygous
state.
A) dominant
B) recessive
C) sex-linked
D) hemizygous
27. Genes carried on sex chromosomes are called genes.
A) dominant
B) recessive
C) sex-linked
D) hemizygous
28. A common abnormality in females, syndrome results from an absence
of one X chromosome.
A) triple X
B) Turner’s
C) Klinefelter’s
D) Down
29. syndrome occurs in males when there is an extra X chromosome.
A) Triple X
B) Turner’s
