10 Questions
Which of the following elements are not among the 6 elements that make up 96% of a cell's composition?
Sodium
What is the primary source of carbon for heterotrophs?
Organic molecules produced by other living organisms
What is the primary function of micronutrients in microbial nutrition?
Enzyme function and maintenance of protein structure
What is the term for microorganisms that derive their energy from organic compounds and their carbon source from inorganic compounds?
Chemoorganic
What is the approximate percentage of water in the cytoplasm of a microorganism?
70%
What is the primary source of nitrogen for heterotrophs?
Proteins, DNA, RNA, and ATP
What is the role of sulfur in proteins?
Forming disulfide bonds
What is the characteristic of facilitated diffusion?
Transport of polar molecules and ions
What is the effect of a hypertonic solution on a cell?
The cell will shrink and die
What is the term for the transport of molecules against a concentration gradient, requiring energy and carrier proteins?
Active transport
Test your knowledge of microbial nutrition, including macronutrients and micronutrients, inorganic and organic nutrients, and their roles in cell structure and metabolism. Learn about the essential elements for microbial growth and ecology.
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