Question

value: 10
currently ____ is used to identify archaeans
a. dna sequence
b. nuclear structure
c. water temperature
d. cell size and shape

value: 10
match the items.
a. botulism
b. yogurt
c. gonorrhea

1. neisseria gonorrhoeae

a ►

1. clostridium botulinum

a ►

1. lactobacillus bulgaricus

a ►

value: 10
archaeans that live in a high salt concentration are called ____.
a. acidophiles
b. basophiles
c. halophiles
d. methanogens
e. thermophiles

Explanation:

• First question: DNA sequencing is a modern and accurate method to identify archaea as it looks at their genetic material. Nuclear structure (archaea are prokaryotes, no true nucleus), water temperature (environmental factor, not identification method), and cell size/shape (too general and variable) are not the best choices.
• Matching question:
• Neisseria gonorrhoeae causes gonorrhea.
• Clostridium botulinum is associated with botulism.
• Lactobacillus bulgaricus is used in yogurt production.
• Third question: Halophiles are organisms (including archaea) that thrive in high - salt environments. Acidophiles like acidic conditions, basophiles (not a standard term in this context, perhaps a misnomer, as alkaliphiles like basic conditions), methanogens produce methane, and thermophiles like high - temperature environments.

Answer:

• First question: A. DNA sequence
• Matching question: 1. c, 2. a, 3. b
• Third question: C. Halophiles