During fermentation, yeast cells convert pyruvate to ethanol and CO2. Fermentation also occurs in human muscle cells when oxygen is depleted. In the case of muscle cells, what are the by-product(s) of the fermentation of pyruvate?
A) oxygen and ATP
B) ethanol and CO2
C) lactic acid
D) ATP and NADH
E) sugars and proteins
C) lactic acid
You might also like to view...
Tanisha was just diagnosed with an aggressive form of breast cancer called HER2. The cancer started because
A) she has a deletion in the BRCA1 gene that is found in African-American and Ashkenazi Jewish women. B) her affected breast cells have many extra receptors for epidermal growth factor, and so they receive too many signals to divide. C) her affected cells have extra genes for epidermal growth factor, sending signals for the cells to divide too frequently. D) a translocation occurred between chromosomes 7 and 8, generating and activating a breast-specific oncogene.
thr refers to a gene that governs a cells ability to synthesize threonine from inorganic precursors. The
designation thr+ indicates:
a. that the allele is normal. b. that the allele is the mutant allele. c. that the bacterium is biologically active. d. that the bacterium is biologically inactive. e. that the bacterium cannot make its own threonine.
What is the function of a gizzard as found in
earthworms and other animals?
a. stores food b. entrance for food c. absorbs nutrients d. grinds food e. exit for waste
Which of the kingdoms in the six kingdom system of classification was once grouped with plants?
a. Animalia b. Carnivores c. Fungi d. Protista