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Overview of types of immune responses. Difference between innate and adaptive immunity. Differences between humoral adaptive immunity and cell-mediated adaptive immunity.

This video introduces you to the concept of ratios.

In this online lesson you will learn how to compare measurements that have different units.

In this unit you will learn how to convert between common metric units of measure.

Outcomes

By the end of this course you will:

• Be familiar with the different metric units of length
• Be able to compute calculations involving metric units of length
• Be able to convert one metric unit of length to another

This YouTube video can help to get deeper understanding on solving ratio and proportion problems.

Outcomes

In this course you will learn about:

1. Ratio and rate.
2. Direct and indirect proportion.
3. Simple interest.

Role of phagocytes in innate or nonspecific immunity. Neutrophils, macrophages, and dendritic cells.

By the end of this unit you will be able to:

• Use a ruler and protractor accurately
• Understand the SI system of measurement
• Convert between different units

This lesson explores appropriate units for metric measurement.