Using the principle of faunal succession, if an unidentified fossil is found in the same rock layer as an index fossil, the two species must have existed during the same period of time (Figure 4). If the same index fossil is found in different areas, the strata in each area were likely deposited at the same time.
C) Provide insulation.
Enzymes are catalyst, meaning that the speed up and help during chemical reaction which in turn means that they do prodvide energy to the cell, they do assist in the production of new cell parts and they also control many cell processes.
They do not provide insulation to cells, and that is the function of lipids.
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BioTeacher101
Answer:
4. calcium ion and cAMP
Explanation:
Second messengers are the intracellular chemicals that are produced for signal transduction and generation of cellular response when a water-soluble hormone binds to its cell surface receptors. Since water-soluble signaling molecules such as protein hormones cannot cross the cell membranes of their target cells, their binding to the respective receptors triggers the production of an intracellular second messenger. The most common second messenger molecules are cAMP and calcium ions. For example, protein hormones bind to their G-protein linked membrane receptors and trigger the synthesis of cAMP in their target cells.
Answer:
The correct answer is - true.
Explanation:
The scientific journal is are the journals that publish the recent scientific findings or scientific experiments that produce new and appropriate results regarding particular experiment or research/
To confirm an experiment, published finding must be tested repeatedly by different scientists and researchers and see if the results are same in particular conditions.
Thus, the correct answer is - true.
Answer:
B.
Explanation:
An unsaturated fatty acid has one or more C=C double bond in the fatty acid chain. Only one answer choice has a C=C double bond.
So, the answer is B.
Hope that helps.
