Ancestors of ____ may have possessed mitochondria, which were lost or reduced during evolutionary history

a. Paramecium
b. Laminaria


c. Amoeba
d. Euglena
e. Giardia


e

Biology & Microbiology

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Predict the properties of viral populations in the human colon given that the colon contains a very high concentration of rapidly dividing bacteria. Predict as many viral properties as you can with this information

What will be an ideal response?

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A lesion from an individual that works in a research laboratory is cultured and reveals a "fried egg" appearance with a dark center when grown on blood agar after 48 hours of incubation. The organism is nonmotile, indole, catalase, oxidase, and nitrate negative. Which of the following organism was isolated?

a. Streptobacillus sp. b. Actinobacillus sp. c. Aggregatibacter aphrophilus d. Cardiobacterium sp.

Biology & Microbiology

Which of the following is NOT true of seedless vascular plants?

a. Sporophytes are independent of gametophytes. b. Water is not needed for gamete transport. c. Sporophytes have vascular tissue. d. Seeds are not produced. e. Living members still exist

Biology & Microbiology

Due to a mutation in the HEXA gene, a substance called GM2, normally present in the tissues and nerve cells of the brain, accumulates there. This mutation mainly effects enzymes associated with which organelle in an affected individuals' cells?

a. nucleus b. endoplasmic reticulum c. plasma membrane d. lysosomes

Biology & Microbiology