The answer is: Epiglottis
I hope that helped you! c:
Answer:
1. 2. 4. 5. 7 and 8
Explanation:
3. False: A single stimulus can activate multiple target cells.
6. False: A ligand does not phosphorylate protein residues but can bind and activate kinase receptors resulting in conformational changes that induce intracellular phosphorylation of target protein domains.
9. False: Second messengers relay stimulus to intracellular targets. e.g calcium can act as a second messenger.
By definition, a keystone predator is a predator that once it is eliminated from the food web, prey population thrives. This often leads to a decline in diversity within the food web. With this in mind, we can say that A and B are wrong. Additionally, from the information, we can say that D is the correct answer since they do play a very important role in the food web.
President Franklin D. Roosevelt passed numerous acts in the 1930's. Some were the Emergency Banking Act, Social Security Act, and the Soil Conservation Act. All of these acts that were passed by the legislature increased the role of the national government in the economy. The correct answer will be D.
Answer:
Molecular evidence.
Explanation:
Different species of bacteria may look similar structurally/morphologically and can only be told apart through molecular sequencing of biomolecules such as DNA or proteins. This genetic sequencing will compare the sequences of the two species and the differences can be perceived and biologists can tell how far apart the species are.
