A student observes a flask containing a mixture of yeast, water, and a carbohydrate; the top of the flask is covered by a balloon. After 30 minutes, what waste products would she expect to find in the flask and balloon?

A carbon dioxide and ethyl alcohol

B carbon dioxide and lactic acid

C oxygen and glucose

D oxygen and starch


B carbon dioxide and lactic acid

Biology & Microbiology

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The first eukaryotic cells were ____

a. bacteria b. archaea c. protists d. algae e. fungi

Biology & Microbiology

Phosphate is introduced to ecosystems via:a

fertilizers. b. laundry detergents. c. dish detergents. d. all of these. e. none of these

Biology & Microbiology

________ is the study of phenomena and mechanisms that cause chromosome-associated heritable changes to gene expression that are not dependent on changes in DNA sequence

A) Transmission genetics B) Population genetics C) Epigenetics D) Mutagenesis E) Preformation

Biology & Microbiology

What could be the result if somehow two follicles made it to the late tertiary stage and burst from the ovary?

A. Excessively high estrogen levels, causing menstruation B. Twins C. Permanent infertility D. Nothing unusual -- this describes typical ovulation

Biology & Microbiology