Answer:
Pulse chase experiment was performed to find the secretory pathway of proteins inside the cell. The protein sorting and pathway of protein can easily be studied by the pulse chase experiment.
The molecule is labelled with radioactive component and its pathway is observed during the pulse chase experiment. The molecule reside 5 minutes in rough ER. After this 40 minutes in glogi apparatus. From the golgi apparatus the molecules moves towards the endosomes and resides for 70 minutes. The molecules then transferred to lysosomes in 140 minutes. This chasing explains the pathway of the molecule.
The pathway can be drawn is ER→golgi→endosome→lysosome.
The rays have to travel a larger part of the atmosphere because they are very close to the horizon. So light other than red is scattered away.
Make an observation.
Ask a question.
Form a hypothesis, or testable explanation.
Make a prediction based on the hypothesis.
Test the prediction.
Answer:
Conservation efforts are helping bat species recover. At least 13 types of U.S. bats are endangered, and more are threatened. These amazing animals face a multitude of threats including habitat loss and disease, but we're working to change that. A unique international conservation partnership in the southwestern U.S. and Mexico has been working to help one species, the lesser long-nosed bat, recover to the point it can be removed from the Endangered Species list. In 1988, there were thought to be fewer than 1,000 bats at the 14 known roosts range wide. There are now an estimated 200,000 bats at 75 roosts!
Explanation:
False. this earth has always had life. be it microscopic cells to a gigantic titanosaurus