Final Exam: Multiple Choice Questions – SCI/250, Week 7

Summary

Immunology, microbiology and pathology are about how the body defends itself against infections. This document covers these topics through multiple-choice questions. It helps students test their knowledge of these subjects.

Bacteria and Stains

Bacteria have different cell walls. Stains help identify them. The Gram stain is one way to tell bacteria apart. It uses different dyes to show their cell wall content.

Parasites and Infections

Parasites can harm their hosts in several ways. Some infections spread from parents to children. Others are caught in hospitals. Septicemia is a type of infection. Resident microflora are not harmful.

Viruses and the Lymphatic System

Some viruses stay inactive for years. Others cause cancer or birth defects. The lymphatic system has several jobs. It fights infections and moves fluids around the body. Adaptive immunity is specific to certain invaders.

Respiratory Infections and Diseases

Some viruses change over time. This can cause new outbreaks. The respiratory tract has ways to protect itself. Some infections can be treated with drugs. Others cannot. Some diseases come from animals.

Key terms

Gram stain

A method that uses dyes to show the cell wall content of bacteria.

Septicemia

A type of infection where bacteria are in the blood.

Vertical transmission

The spread of a pathogen from parent to child before or during birth.

Adaptive immunity

A specific defense against foreign bodies or antigens.

Nosocomial infections

Infections caught in hospitals.

Zoonoses

Diseases that are primarily found in animals but occasionally cause diseases in humans.

Questions this document helps with

• What are the differences between Gram-positive and Gram-negative bacteria?
• How do parasites harm their hosts?
• What is the role of the lymphatic system in fighting infections?

Summary written with AI from the document's text.