Biology Flashcards
(43 cards)
Which of the following occurs in mitochondria?
A. Cytokinesis B. Lipid synthesis C. DNA replication D. Citric Acid Cycle E. Photon capture
D. Citric Acid Cycle
What is cytokinesis?
the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
Which of the following is the site of protein synthesis in a cell?
A. Cell wall B. Cell membrane C. Nucleus D. Mitochondrial E. Ribosome
E. Ribosome
In embryonic origin, nerve cells are most similar to:
A. Epidermal cells B. Bone cells C. Red blood cells D. Liver cells E. Reproductive cells
A. Epidermal cells
In the name “homo sapiens”, the word “sapiens” refers to:
A. Species B. Family C. Class D. Genus E. Order
A. Species
All of the following diseases are genetically inherited EXCEPT:
A. Tuberculosis B. Phenylketonuria C. Huntington’s Disease D. Cystic Fibrosis E. Tay-Sachs Disease
A. Tuberculosis
Which of the following diseases can be controlled by dietary regulation?
A. Influenza B. Type 2 Diabetes C. AIDS D. Pertussis E. Small Pox
B. Type 2 Diabetes
As a direct result of photosynthesis, energy is stored in molecules of which of the following?
A. RNA B. DNA C. C6H1206 (glucose) D. Hsub>20 E. COsub>2
C. C6H1206 (glucose)
A person whose gallbladder has been removed has a decrease ability to store bile and therefore to digest
A. Fats B. Starches C. Sugars D. Proteins E. Vitamins
A. Fats
In fruit flies, “Straight Wings” (S) is dominant over “Curly Wings” (s), and “Gray Body Color” (G) is dominant over “Black Body Color” (g). A straight-winged female with gray body color was mated with a straight-winged male with black body color, and the following ratios of offspring resulted.
Ratio: Phenotype:
3/8. Straight-winged, gray body color
3/8. Straight-winged, black body color
1/8. Curly - winged, gray body color
1/8. Curly-winged, black body color
The date suggests that the genotype of the male parent is
A. SsGg B. SSGg C. ssgg D. SsGg E. SsGg
D. Ssgg
In fruit flies, “Straight Wings” (S) is dominant over “Curly Wings” (s), and “Gray Body Color” (G) is dominant over “Black Body Color” (g). A straight-winged female with gray body color was mated with a straight-winged male with black body color, and the following ratios of offspring resulted.
Ratio: Phenotype:
3/8. Straight-winged, gray body color
3/8. Straight-winged, black body color
1/8. Curly - winged, gray body color
1/8. Curly-winged, black body color
The date suggests that the genotype of the offspring with the curly wings and black body color is
A. SsGg B. SSGg C. ssgg D. Ssgg E. SsGg
C. ssgg
The classification characteristics that define the genus of an animal or a plant are usually more general than those defining
A. a class B. An order C. A species D. A family E. A phylum
C. A species
Hard water is undesirable and often softened because hard water
A. Is too viscous for regular uses
B. Contains trace amounts of toxic substances
C. Forms insoluble precipitates when boiled or when used with soap
D. Cannot be used efficiently by the body due to dissolved impurities
E. Evaporates more rapidly than salt water
C. Forms insoluble precipitates when boiled or when used with soap
Which of the following adaptations are more likely to be found in the leaves of desert plants than in those of plants grown in moist regions?
A. Stomata mostly on upper leaf surface B. A thin, transparent cuticle C. A smooth leaf surface, free of hairs D. A thickened epidermis and cuticle E. A loosely packed mesophyll layer
D. A thickened epidermis and cuticle
If all the xylem from a section of tree trunk could be removed, which of the following would most likely happen first?
A. Food couldn’t pass from the leaves to the roots
B. The roots would be unable to transfer any stored food to the spring buds
C. The leaves would be unable to get any carbon dioxide.
D. The roots would be unable to store food.
E. The leaves would be unable to get sufficient water.
E. The leaves would be unable to get sufficient water
Whereas the ultimate sources of energy for most organisms is sunlight, the immediate source is
A. Chemical B. Electrical C. Thermal D. Gravitational E. Radiant
A. Chemical
In embryonic origin, most cells are similar to
A. Epidermal cells B. Bone cells C. Red Blood cells D. Liver cells E. Reproductive Cells
A. Epidermal cells
In the name “homo sapiens” the word “sapiens” refers to the
A. Species B. Family C. Class D. Genus E. Order
A. Species
A student placed a sprig of green water plant under a funnel in a glass vessel full of water and placed a test tube full of water mouthdownward over the stem of the funnel. After the setup had been exposed to sunlight for several hours, the student tested a gas that had been collected in the test tube and concluded that the plant had produced oxygen. The results of this experiment could have been interpreted more satisfactorily if
A. The water had been tested for carbon dioxide
B. Only the leaves of the plant had been used
C. Air had been forced through the water
D. The plant had not been exposed to sunlight
E. A similar experiment had been set up without sunlight.
E. A similar experiment had been set up without sunlight
Which of the following best completes the statement below?
Among multicellular animals, the insects exhibit the greatest diversity of life-forms; therefore, _____
A. The total number of species is limited
B. The presence of wings on an insect is probably an evolutionary error
C. Insects probably occupy the greatest number of niches
D. Insect control by human beings is simplified
E. Any genetic mutation in fruit flies is likely to escape detection
C. Insects probably occupy the greatest number of niches
The percentage of phosphates in commercial detergents was reduced primarily because phosphates were shown to
A. Be less effective cleaning agents than most other compounds
B. Build up in animal tissues and cause sterility
C. Cause cancer in animals
D. Cause birth defects in animals
E. Increase the growth rates of algae in lakes and rivers
E. Increase the growth rates of algae in lakes and rivers
Carbohydrates are most commonly stored in plants in the form of
A. Starch B. Cellulose C. Lactose D. Ribose E. Sucrose
A. Starch
The father will transmit the genes of his Y chromosome
A. One-half of his sons only B. One-half of his daughters only C. All of his sons only D. All of his daughters only E. None of his sons.
C. All of his sons only
In many cultivated plants such as oranges, bananas, and potatoes, favorable characteristics are often created by careful genetic crosses. Of the following, which would be the best way to maintain the traits of a new variety with favorable characteristics?
A. Selfing individuals of this new variety (i.e., cross the offspring of one parental plant)
B. Artificially pollinating wild varieties with pollen from the new variety
C. Artificially pollinating the new variety with pollen from wild varieties
D. Crossing the new variety with a variety that was homozygous recessive for all traits of concern
E. Vegetative reproduction of the new variety.
E. Vegetative reproduction of the new variety
