Bio Test 3/4/13

True or False:
Gram-negative bacteria have a thich layer of peptidoglycan that stains purple

True or false:
Bacteria lack nuclei and there also lack genetic material

True or false:
Bacterial cells have membrane-bound organelles and chromosomes

True or false
Bacteria are incapable of movement themselves; they can only get to new locations by growing toward them or by forming endospores and being carried in air or water

True or false
some bacteria cannot survive in the presence of oxygen

True or false:
When bacteria undergo nonreproductive genetic recombination, their bacterial chromosome is altered

True or false:
Human sperm and egg cells have 23 chromosomes

True or false:
cell division in bacteria and eukaryotes takes place in precisely the same manner

True or false:
cells spend most of their lifetime in interphase

True or false:
meiosis results in the formation of haploid cells from diploid cells

Bacteria are the only organisms characterized as______

What is the shape of the Bacillus bacterial genus?

What shape is the spirals called?

When tested with a Gram stain, gram-positive bacteria are stained what color?

Bacteria lack a true nucleus and membrane-bound organelles; therefore, they are classified as