Answer:
B. A harmful compound can become harmful when its elements are seperated.
Explanation:
In the question, common table salt, NaCl was the illustration.
NaCl is a crystalline solid whjch has different benefits like for preservation, add taste to foods etc. NaCl is generally consumed by humans daily and is found readily. This goes to show that NaCl is a harmless compound but the individual elements that is, Soduim and Chlorine gas,
2Na + Cl2 --> NaCl
Soduim metal is a reactive and unstable element with 1 (valence) electron in its outer shell. Hence why the reaction of sodium strips with water is explosive.
Chlorine gas is very poisonous, unstable as well as reactive because of the 7 (valence) electrons in its outermost shell.
Answer:
Glucose moves with the concentration gradient from high to low concentration using a membrane protein.
Explanation:
Facilitated transport is a type of passive transport where the molecules move from region of high concentration to low concentration. Since they are moving along the concentration gradient, energy is not required for the process. But it does require some special membrane proteins hence the term "facilitated". The proteins are required for movement of large and polar molecules because even their diffusion is difficult through the non polar lipid layer of membrane.
Here, glucose is moving from high to low concentration so it's diffusion but it is using membrane protein because it is polar hence it is facilitated diffusion transport.
HOPE IT HELPS! :D
D, sounds like it could be your answer
Answer:
quizlet/494283439
Explanation:
I used this for my test not sure if im too late or not but here it for future students
Also the quizlet is wrong on a few questions (im not sure if its like this for everyone but it was like this for me):
6. B.292.3 meters
7. B.154 ft
8. D.912 meters
9. A.307 feet
Again these were the correct answers for me not sure if its the same for everyone they might have changed it.
(Also, I'm not sure about 11-15 bc my teacher said i didnt have to do those ones) Hope this helps :))
