Explanation:
he main difference between Independent Variables and Dependent Variables is in the definition. Independent variables in research can be manipulated or altered to see their impact on other variables. The dependent variable is dependent on other variables. It is the variable that is measured or tested by a researcher.
Barbiturates supresses brain activity..its an drug that block brain activity
Answer: auxin
Explanation: The answer to your question is auxin
1. The right answer is A nerve cell stimulates a muscle cell to contract (it is intercellular communication).
Cellular communication is the set of mechanisms that allow a cell, tissue, and organism to receive, interpret and respond to signals from other cells or its environment.
All cell types have these mechanisms but some have developed them more:
*the nervous system,
* organs of the senses,
* endocrine system,
*immune system.
This allows the body to maintain its homeostasis, its balance, allowing the interaction between these systems.
2. The right answer is the enzyme-linked receptor.
Receptor-enzymes associate on the same protein of the plasma membrane the functions receptor (mediator binding) and effector (enzymatic activity at the origin of intracellular message transduction): these are catalytic receptors. Thus, the receptor itself has enzymatic activity and the fixing of the messenger modulates this activity which may be of several types:
*tyrosine kinase
*tyrosine phosphatase
*receptors with guanylate cyclase activity
Answer:
It will probably stop fish migration
Explanation:
Fish have to migrate so they don't die from the cold or starvation. They swim upstream and eventually reach there destinations. If a dam is in the way it will cause the fish to have a block in there path and they will eventually die
