26.1 Two Prokaryotic Domains Flashcards Preview

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Flashcards in 26.1 Two Prokaryotic Domains Deck (10)
1

what are the two domains characterized by prokaryotic cell structure?

bacteria and archaea?

2

plasmid

in bacteria, a small circular molecule of DNA carrying a small number of genes that can replicate independently of the bacterial genomic DNA

3

plasmids may have genes that have adaptive value under...

specific environmental conditions

4

since no nuclear membrane separates DNA from the surrounding cytoplasm, transcribed mRNA is immediately....

translated into proteins by ribosomes

5

bacteria have both a plasma membrane and a...

cell wall

6

because bacteria lack the membrane bound organelles in eukaryotic cells, metabolism is carried out by:

proteins that float freely in the cytoplasm or are embedded in the plasma membrane

7

the light reactions of photosynthetic bacteria take place in association with:

membranes distributed within the cytoplasm

8

peptidoglycan

a complex polymer of sugars and amino acids that makes up the cell wall of bacteria

9

how to photosynthetic bacteria gain CO2 and how do respiring bacteria take in small organic molecules and oxygen?

through diffusion from the environment into the cell

10

what are bacteria small?

DIFFUSION: surface area-volume ratio, interior parts of a small cell are closer to the surrounding environment