Free-living, single-celled eukaryotic microorganisms are simple cells that can swim, mate, hunt, and devour other microorganisms.
举一反三
- Phagocytosis is the process by which a cell, such as a white blood cell, ingests microorganisms, other cells, and foreign particles._____
- The function of immunological defense refers to ( ). A: prevent pathogenic microorganisms invading the body B: inhibit the proliferation and spread of pathogenic microorganisms in the body C: clear the old, dead, or damaged cells in the body D: remove pathogenic microorganisms and their products from the body
- White blood cells patrol the body searching for potential sources of infection and destroy invading pathogens, such as ________, ________, ________, and ________. A: viruses B: bacteria C: fungi D: parasitic microorganisms
- What does not conform to the characteristics of growth factors is that () A: necessary for the growth of microorganisms B: little demand C: microorganisms cannot synthesize by themselves D: organic nutrient
- The anti-UV mutation of microorganisms must be induced by ultraviolet rays