The sexually transmissible disease gonorrhea has become increasingly resistant to treatment with antibiotics. What is the most likely scientific explanation? a) The gonorrhea bacteria learned to avoid antibiotics b) The gonorrhea bacteria changed their genes when they sensed antibiotics c) Antibiotic-sensitive gonorrhea bacteria died out, but antibiotic-resistant gonorrhea bacteria have flourished and persisted d) The […]
Which statement best describes the relationship between plants and animals on earth? a) Plants produce O2 and sugars from CO2 b) Animals produce CO2 and H2O from sugars and O2 c) Plants produce O2 and sugars and animals produce CO2 and H2O d) Animals produce O2 and sugars and plants produce CO2 and H2
Think of the cell as a factory, in which the organelles are specialized sites of production. All cells have a power plant, the mitochondrion. Plant cells have an additional “reactor” for the production of usable energy. It is called the ________. a) golgi body b) rough endoplasmic reticulum c) central vacuole d) vesicle e) chloroplast
What is biology? a) The study of life b) The study of the environment c) The study of DNA d) The study of genetics e) The study of the earth 29. Which of the following groups would contain the largest number of organisms? a) class b) order c) species d) kingdom e) family 30. All […]