Home Instruction Schools Living Environment Quiz 2 Script

a) nerve signals and respiratory gases
b) respiratory gases and hormones
c) bones and muscles
d) nerve signals and hormones

a) Enzymes are complex compounds composed of starch.
b) Each enzyme has a characteristic shape.
c) Enzymes are long, complex fats.
d) Each enzyme is made up of four subunits.

5) Flower color in primrose plants is controlled by an individual gene.The sudden appearance of one white flowering primrose in a plant breeder's field of red primrose plants is most likely due to

a) a change in the amount of glucose produced during photosynthesis
b) the use of a new natural fertilizer on the field
c) rapid mitotic divisions within the developing seeds
d) a random change in the structure of DNA during meiosis

6) White short-homed cattle and Black Angus cattle have been crossed to produce offspring with superior beef and rapid growth qualities.This process of choosing organisms with the most desirable traits for mating is known as

a) cloning
b) biodiversity
c) selective breeding
d) genetic engineering

7) When the antibiotic penicillin was first introduced, it was immediately effective in combating staphylococcus bacterial infections.After a number of years, there were outbreaks of staphylococcal infections that did not respond to treatment with penicillin.The best explanation for this situation is that

a) members of the original population of bacteria that were penicillin resistant survived and reproduced, creating a more resistant population
b) the bacteria that survived exposure to penicillin learned to avoid it
c) the bacteria that survived exposure to penicillin learned to avoid it
d) during each generation, the bacteria modified their own DNA to increase their ability to resist penicillin and passed this ability on to their descendants

8) Which statement about the rates of evolution for different species is in agreement with the theory of evolution?

a) They are identical, since the species live on the same planet.
b) They are identical, since each species is at risk of becoming extinct.
c) They are different, since each species has different adaptations that function within a changing environment.
d) They are different, since each species has access to unlimited resources within its environment.

a) Present-day species developed from earlier species.
b) Some species die out when environmental changes occur.
c) Complex organisms develop from simple organisms over time.
d) Change occurs according to the needs of an individual organism to survive.

10) Warts result when certain viruses cause skin cells to reproduce at a high rate. This rapid reproduction of skin cells is due to the viruses stimulating

a) cellular digestion
b) mitotic cell division
c) synthesis processes
d) meiotic cell division

11) Even though the environment changes, a population that occupies a given geographic area will most likely continue to be found in this area if the

a) variations in the population decrease over time
b) members of the population decrease in number
c) members of the population exceed the carrying capacity
d) population passes on those genes that result in favorable adaptations

a) hormones
b) carbohydrates
c) antibodies
d) enzymes

a) It always produces antibiotics.
b) It usually involves the recognition and destruction of pathogens.
c) It stimulates asexual reproduction and resistance in pathogens.
d) It releases red blood cells that destroy parasites.

14) Before it was banned, the insecticide DDT was used to combat an organism called the red mite. An unexpected result of the use of DDT was that the population of the red mite increased rather than decreased, while the population of insect predators of the red mite decreased. What can be inferred from this situation?

a) Environmental changes that affect one population can affect other populations.
b) The red mite and its insect predators were all competing for the same resources.
c) The red mites were immune to the effects of insecticides.
d) Using insecticides is a reliable way to eliminate all insect predators.

a) The production of estrogen stimulates the formation of gametes for sexual reproduction.
b) The level of oxygen in the blood is related to heart rate.
c) The level of sugar in the blood is affected by the amount of insulin in the blood.
d) The production of urine allows for excretion of cell waste.

16) Chittenango Falls State Park in central New York State is the only known habitat for an endangered species of aquatic snail.Contamination of its water supply and reduction of its habitat have threatened the future of this snail. Which step could be taken toÊprotect this species of snail?

a) banning human activities that damaged the habitat
b) introducing a new snail predator into the habitat
c) transferring the snail to a terrestrial environment
d) crossbreeding the snail with another species

17) A green plant is kept in a brightly lighted area for 48 hours. What will most likely occur if the light intensity is reduced slightly duringÊthe next 48 hours?

a) Photosynthesis will stop completely.
b) The rate at which nitrogen is used by the plant will increase.
c) The rate at which oxygen is released from the plant will decrease.
d) Glucose production inside each plant cell will increase

a) It usually contains only one type of producer.
b) It usually contains a great diversity of species.
c) It contains simple food chains that have more consumers than producers.
d) It contains complex food webs that have more heterotrophs than autotrophs.

19) A certain mutant bacterial cell cannot produce substance X. The mutation was most likely the result of a change in the

a) structure of the cell membrane
b) ability of the DNA to replicate
c) amino acid sequence of DNA
d) gene that codes for a specific protein

20) For many decades, certain areas of New York State have remained as hardwood forests containing predominantly oak and hickory trees.These forested areas will most likely

a) remain indefinitely and not be affected by environmental influences
b) reach maturity and change in the near future
c) be destroyed by environmental changes and never return to their present forms
d) continue in their present forms unless affected by environmental factors