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MCAT Biochemistry Chapter 5 Lipids All Answers Correct What type of microorganism is *Escherichia coli* (E. coli)? ️️ *Escherichia coli* (E. coli) is a bacterium. How do viruses differ from bacteria in their structure and reproduction? ️️ Viruses lack cellular structures and cannot reproduce independently; they need a host cell to replicate. What is the main function of chloroplasts in algae and plant cells? ️️ Chloroplasts carry out photosynthesis, converting sun...

WGU C453 Clinical Microbiology Verified Answers What type of microorganism is responsible for nitrogen fixation in soil? ️️ Certain bacteria, like *Rhizobium*, are responsible for nitrogen fixation in soil. What is the primary role of mitochondria in eukaryotic cells? ️️ Mitochondria produce energy in the form of ATP through cellular respiration. Define the term “pathogenicity.” ️️ Pathogenicity is the ability of an organism to cause disease. How does the inna...

WGU Microbiology C453 Objective Assessment Study Guide What is the role of the capsule in some bacterial cells? ️️ The capsule protects bacteria from phagocytosis and helps them adhere to surfaces. How do flagella contribute to bacterial survival? ️️ Flagella allow bacteria to move toward favorable environments and away from hostile ones, enhancing survival. What is the importance of aseptic technique in microbiology labs? ️️ Aseptic technique prevents contaminati...

WGU C-453 Microbiology Practice Questions Rated A What is the main function of ribosomes in a bacterial cell? ️️ Ribosomes are responsible for protein synthesis. Name the structure that provides bacteria with structural support and protects them from osmotic pressure. ️️ The cell wall provides structural support and protection from osmotic pressure. Which microorganism is known for being a common vector for disease in humans? ️️ Mosquitoes are a common vector for ...

Micro D311 OA All Answers Correct What is the difference between humoral and cell-mediated immunity? ️️ Humoral immunity involves antibodies produced by B cells that circulate in body fluids to target extracellular pathogens, while cell-mediated immunity involves T cells targeting infected or abnormal cells. Describe the role of phagocytes in the immune system. ️️ Phagocytes, such as macrophages and neutrophils, engulf and digest pathogens, cellular debris, and foreign part...

WGU D311: Microbiology with Lab: Section 1 Describe the lytic cycle in bacteriophages. ️️ In the lytic cycle, a bacteriophage attaches to a bacterial cell, injects its DNA, uses the host’s machinery to replicate and assemble new viruses, then lyses the cell to release them. What is the significance of Koch's postulates? ️️ Koch's postulates are a set of criteria to establish a causative relationship between a microbe and a disease, helping to identify pathogens respon...

WGU Clinical Microbiology Final Exam Rated A+ Describe the role of restriction enzymes in bacteria. ️️ Restriction enzymes cut DNA at specific sequences, helping bacteria defend against invading viral DNA by degrading foreign genetic material. What is a facultative anaerobe, and how does it adapt to varying oxygen levels? ️️ A facultative anaerobe can grow with or without oxygen, using aerobic respiration when oxygen is available and switching to anaerobic respiration or ferm...

Microbiology D311 - OA Prep 2025 Guaranteed Success What is the main difference between Gram-positive and Gram-negative bacteria? ️️ Gram-positive bacteria have a thick peptidoglycan layer in their cell wall that retains the crystal violet stain, while Gram-negative bacteria have a thin peptidoglycan layer and an outer membrane that does not retain the stain. Describe the process of microbial respiration. ️️ Microbial respiration is the process by which microorganisms convert...

WGU C-453 Microbiology OA Study With Answer Choices Below What is the purpose of sterilization in microbiology? ️️ Sterilization eliminates all forms of microbial life, including spores, from surfaces or instruments, ensuring they are safe for procedures that require complete microbial elimination. How do bacteriophages infect bacterial cells? ️️ Bacteriophages attach to bacterial cell surfaces, inject their genetic material, and hijack the host’s machinery to produce new...

WGU D311 Microbiology 2024 study for OA Verified A+ Explain the primary role of microbes in the environment. ️️ Microbes play a critical role in decomposing organic matter, cycling nutrients, and supporting ecosystems by maintaining soil health and promoting plant growth. Define the term "pathogen." ️️ A pathogen is a microorganism that causes disease in its host, which can be an animal, plant, or human. What is the function of an endospore in bacteria? ️️ An en...