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What is the acceleration due to gravity at the space station.

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

Understanding the structure of a muscle cell

Video 1: Explores what angles are
Video 2: Provides examples of angles
Video 3: Misconceptions about angles

This video explores the angles found in parallel lines.

DNA is made up of two strands. Each strand has a backbone made up of alternating sugars and phosphate groups. The two strands are linked by complementary nitrogenous bases. The strands are oriented in opposite directions, making the structure "antiparallel".

Applying Newton's first law to answer some true/false statements about why objects move (or not).

Binary fission, budding, mitosis, fragmentation, parthenogenesis and sexual reproduction.

Solving a word problem to find average velocity and speed of an object in one-dimension.

Introduction to bacteria