01 Feb C. prokaryotes convert

Question 1

1. Which of the following accurately describes the binomial nomenclature naming system?

A. The second word indicates the organism’s genus classification.

B. The first word indicates the organism’s genus classification.

C. The first word is always lowercase.

D. The second word is always capitalized.

Question 2

2. According to the Hardy-Weinberg principle, which of the following is most likely to disrupt genetic equilibrium?

A. Lack of movement

B. Large population size

C. Nonrandom mating

D. Lack of genetic variation

Question 3

3. When two species exhibit different behaviors but live in the same area, what can result?

A. Behavioral isolation

B. Geographic isolation

C. Temporal isolation

D. Founder effect

Question 4

4. Which of the following is true regarding extinction?

A. The rate of extinction is steady from clade to clade as are the number of species contained within a clade.

B. Single events or several causes working together to produce extinction in a short period is referred to as mass extinction.

C. If the rate of speciation in a clade is equal to or less than the rate of extinction, the clade will survive.

D. Extinction that occurs in a relatively short period of time is referred to as background extinction.

Question 5

5. Which of the following levels is the most inclusive, largest, and least specific of the choices?

A. Class

B. Species

C. Phylum

D. Family

Question 6

6. Limb bones within unrelated animals that have the same basic structures are considered

A. vestigial structures.

B. homologous structures.

C. analogous structures.

D. embryological.

Question 7

7. A prokaryote is most likely to use which of the following modes of metabolism to release energy if it is in an environment without oxygen, dies when exposed to oxygen, and uses fermentation?

A. Facultative anaerobe

B. Obligate anaerobe

C. Photoautotroph

D. Heterotroph

Question 8

8. Which of the following kingdoms contains prokaryotes?

A. Plantae

B. Eubacteria

C. Protista

D. Fungi

Question 9

9. Suppose a population is carrying a condition controlled by two alleles: R (dominant) and r (recessive). If the frequency of the r allele is 15%, and the frequency of the R allele is 85%, what will be the frequency of the RR genotype, assuming evolution is not occurring?

A. 2.25 percent

B. 12.75 percent

C. 72.25 percent

D. 25.5 percent

Question 10

10. Classification of living things takes into consideration all of the following except

A. number of cells.

B. presence of cell membranes.

C. mode of nutrition.

D. presence of a nucleus.

Question 11

11. Which of the following is a contributing reason behind emerging disease?

A. The overuse of antibiotics

B. The absence of migration or travel in organisms

C. The lack of evolution in pathogens

D. The lack of evolution in hosts

Question 12

12. Which situation allows for evolution during gene duplication?

A. A mutation occurs in one copy of the original gene.

B. Existing genes are copied over generations.

C. The original gene never duplicates.

D. The original gene performs the same role as the mutated gene.

Question 13

13. Which phylum of fungi consists of decomposers that utilize flagellated spores?

A. Ascomycota

B. Basidiomycota

C. Zygomycota

D. Chytridomycota

Question 14

14. Which factor within a population could be studied to determine whether the population is evolving?

A. Age of individuals

B. Number of individuals

C. Reproduction method

D. Allele frequency

Question 15

15. Which of the following best pairs Darwin’s contributor to his ideas?

A. Hutton—believed overcrowding led to conditions that would slow population growth

B. Lyell—stated that geological processes would take millions of years

C. Lamarck—used a concept of deep time to explain Earth’s history

D. Malthus—proposed the idea of acquired characteristics during an organism’s lifetime

Question 16

16. Which of the following is not a piece of molecular evidence supporting the endosymbiotic theory?

A. Ribosomes of some organelles are like that of those found in bacteria.

B. Mitochondrial and chloroplast DNA is similar to bacterial DNA.

C. The mitochondria and chloroplasts are much different in structure than bacteria.

D. Some organelles divide by fission just like bacteria.

Question 17

17. Protists are

A. prokaryotes.

B. members of the plant kingdom.

C. more like other protists than members of other kingdoms.

D. reclassified as scientists learn more about their diversity.

Question 18

18. Suppose a population is carrying a condition controlled by two alleles: A (dominant) and a (recessive). Only homozygous individuals that have two copies of the recessive allele have the condition. If the a allele has a frequency of 20%, and the A allele had a frequency of 80%, what percentage of the population will have the condition?

A. 64%

B. 20%

C. 4%

D. 80%

Question 19

19. All of the following are important properties of prokaryotes except

A. prokaryotes are often decomposers and enable recycling of nutrients.

B. prokaryotes are used to make many products for humans.

C. prokaryotes convert nitrogen-containing molecules into forms that can’t be used by other organisms.

D. prokaryotes form the base of many food chains, especially those found within the open ocean.

Question 20

20. Which one of the following criteria is necessary for natural selection to occur?

A. Enough resources exist for individuals to survive and thrive.

B. Individuals show no variation in fitness levels.

C. Individuals have the same adaptations.

D. A struggle for existence is apparent.