Agarose is added to solidify the gel. It then acts as a filter, allowing only smaller particles to pass through quickly. Larger molecules are slowed by this and do not move as fast or far through the gel.

What will be an ideal response?


Agarose is added to solidify the gel. It then acts as a filter, allowing only smaller particles to pass through quickly. Larger molecules are slowed by this and do not move as fast or far through the gel.

Biology & Microbiology

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Some types of dinoflagellates (single-cell eukaryotes) are photosynthetic. They have flagella and can swim through the water. If you grow them in a container that is lit from the right side, the cells will swim to the right side of the container

This result suggests that ___________. A. dinoflagellates sense light B. dinoflagellates sense the Earth's magnetic field C. dinoflagellates sense a heterotrophic food source D. dinoflagellates swim in random directions E. dinoflagellates swim in response to temperature gradients

Biology & Microbiology

Although extinction is a natural process and is ongoing, it is likely we are in a time of ____, an event in which many

different kinds of organisms become extinct in a relatively short period.

a. mass extinction b. genetic mutation c. geologic catastrophe d. loss of megafauna e. birth of new species

Biology & Microbiology

The collection of a substance in an organism's body tissues that becomes more concentrated in organisms higher on a particular food chain is called

a) concentration b) smog c) pollution d) biological magnification

Biology & Microbiology

Which layer of the digestive tract is actually in contact with the food?

A) muscularis externa B) mucosa C) serosa D) submucosa

Biology & Microbiology