Rachel is woken up in the middle of the night by a loud noise that sounds like a rooster. She is irritable and knocks on Chandler and Joey's door to find out what is making the noise. According to the vet, their chicken is becoming a rooster.
The body goes through five different stages of sleep- the stages constantly repeat throughout the night. This video explains what happens during each stage.
Hank explains in-depth the series of reactions that take place for a plant to produce food for itself, also known as photosynthesis. This video also explores the prerequisites (sunlight, carbon dioxide, and water) of these reactions.
Key Words: Xylem, Stomata, Chlorophyll, Chloroplast, Thylakoid, Photoexcitation, Photosystem II, Electron Transport Chain, Cytochrome Complex, ATP
By observing the chloroplasts in a leaf, the students learn that plants produce their own food and do not get it from another source. The students come to the conclusion that the chloroplasts use sunlight, air, and water to create sugar, which is used as energy for the plant.
Beakman explains how leaves lose chlorophyll using a cartoon video. Then he explains the role of chlorophlyll in photosynthesis verbally. To further demonstrate, Beakman acts like the "chef" chlorophyll that provides food for the plant.
Beakman explains germination as an overview with a short video clip. Then explains the durability and uniqueness of different kinds of seeds. Using an animated clip, he explains how birds help spread seeds. They then perform a demo showing how plants always grow toward light.
Bari Kotofsky
about 5 years ago