____ is a typical photolithoautotroph. A: Sulfur oxidizing bacteria B: Iron oxidizing bacteria C: Cyanobacteria D: Purple non-sulfur bacteria

”革兰氏阳性菌” A: Gram-positive bacteria B: Gram-negative bacteria C: Gram-negative virus

Knowing a word involves producing the word to express the meaning; producing the word in different contexts; producing synonyms and opposites for it; producing words that commonly occur with it. This concrete knowledge can be known as _____ .

Gram-positive bacteria can be differentiated from Gram-negative bacteria since the peptidoglycan layer comprises 10% of the cell wall

If the prefix anti- means “against”, what does antibiotic really mean? A: antibacterial B: health-protecting C: non-organic D: bacteria-producing

The main purpose of semi-solid medium is (). A: Check the motility of bacteria B: Check the ability of bacteria to metabolize glucose to produce acid and gas C: Check the ability of bacteria to metabolize tryptophan to produce indole D: None of the above

Sunlight can be used to ______ electricity. A: producing B: be producing C: have produced D: produce

Which is the most common bacteria in aspiration pneumonia? () A: staphylococcus B: anaerobic bacteria C: streptococcus pneumonia D: pseudomonas aeruginosa E: fungus

3-2。What factors do affect the amount of the bacteria grows in packaged food？（ ） A: The type of the packaged food B: Temperature and time C: The structure of bacteria

The firm_________ at producing computers