The surface of the cells of some Pseudomonas species are covered in numerous threadlike structures. What is the likely reaction of such a Pseudomonas cell to the presence of a food particle?

A. Directional movement toward the food particle using a swimming motion
B. Directional movement toward the food particle using a gliding motion
C. Directional movement toward the food particle using an amoeboid motion
D. No movement because the cell synthesizes its own food
E. No movement because it is cemented in place


B. Directional movement toward the food particle using a gliding motion

Biology & Microbiology

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Imagine that you have been shrunk to microscopic size and are sitting on top of a thylakoid disk. Which of the following are contained within the structure upon which you sit?

-photosystems -antenna complexes -ETCs -phospholipids -all of the above

Biology & Microbiology

During synaptic transmission, the influx of ________ causes vesicles in the axon bulb to fuse with the cell membrane, releasing ________

A) mitochondrion; neurons B) Ca2+; neurotransmitter C) neurotransmitters; Ca2+ D) vesicles; neurons E) neurons; mitochondrion

Biology & Microbiology

Mitochondrial disorders can be caused by mutations in all the following except:

A. cytoplasmic DNA B. mitochondrial DNA C. nuclear DNA

Biology & Microbiology

Photosynthetic pigments in its membrane What part of the chloroplast has photosynthetic pigments in its membrane?

a) granum b) mesophyll c) chlorophyll d) thylakoid e) stroma

Biology & Microbiology