Microorganisms that have the ability to cause infectious diseases are called as pathogens. Such microorganisms include bacteria, fungi , virus, and protozoa. Illness in an individual is caused either by disturbing the normal metabolic activity of the host or by inducing the host’s immune system to produce a response. Infectious agents are transmitted by direct contact (person-to-person) or indirect contact (water-borne, food-borne, air-borne, soil-borne, fomite-borne, vector-borne, and zoonosis). Infectious diseases are responsible for the high frequency of human morbidity and mortality world-wide.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1MCQ

Summary Introduction

Introduction:

Microorganisms that have the ability to cause infectious diseases are called as pathogens. Such microorganisms include bacteria, fungi, virus, and protozoa. Illness in an individual is caused either by disturbing the normal metabolic activity of the host or by inducing the host’s immune system to produce a response. Infectious agents are transmitted by direct contact (person-to-person) or indirect contact (water-borne, food-borne, air-borne, soil-borne, fomite-borne, vector-borne, and zoonosis). Infectious diseases are responsible for the high frequency of human morbidity and mortality world-wide.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.) Data Table 1Stage Totals PercentInterphase Mitosis: Prophase Metaphase Anaphase Telophase Cytokinesis Totals 100 100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…

Answer 2

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1MCQ

Summary Introduction

Introduction:

Microorganisms that have the ability to cause infectious diseases are called as pathogens. Such microorganisms include bacteria, fungi, virus, and protozoa. Illness in an individual is caused either by disturbing the normal metabolic activity of the host or by inducing the host’s immune system to produce a response. Infectious agents are transmitted by direct contact (person-to-person) or indirect contact (water-borne, food-borne, air-borne, soil-borne, fomite-borne, vector-borne, and zoonosis). Infectious diseases are responsible for the high frequency of human morbidity and mortality world-wide.

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Answer 3

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1MCQ

Summary Introduction

Introduction:

Microorganisms that have the ability to cause infectious diseases are called as pathogens. Such microorganisms include bacteria, fungi, virus, and protozoa. Illness in an individual is caused either by disturbing the normal metabolic activity of the host or by inducing the host’s immune system to produce a response. Infectious agents are transmitted by direct contact (person-to-person) or indirect contact (water-borne, food-borne, air-borne, soil-borne, fomite-borne, vector-borne, and zoonosis). Infectious diseases are responsible for the high frequency of human morbidity and mortality world-wide.

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Answer 4

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 25, Problem 1MCQ

Summary Introduction