The tongue has been considered as the strongest muscle yet it is a group of muscles. This is because it does not stop working. It is use if someone is eating, drinking, pushing the food as well as the liquid down to the throat and works to keep saliva out of one's mouth.
Answer:
b. absence of peptidoglycans in the cell walls of archaea.
Explanation:
<em>Archaea is a domain of unicellular organism (procaryotes) that live in extreme environments, their cell walls are made of pseudo peptidoglycan (similar in function to peptidoglycans but different in structure), </em>on the other hand, bacteria's cell walls are made of peptidoglycan and lipopolysaccharide.
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Answer:
it causes the depolarization of the target cell
Explanation:
Glutamate is an excitatory amino acid neurotransmitter that binds to specific receptors on the surface of target cells and thus causes its depolarization. During glutamate-mediated depolarization, the difference in charge inside and outside the cell is lost due to the entry of sodium and calcium positive ions into the postsynaptic cell (neuron) through specific ion channels. Moreover, glutamate binding also leads to the exit of potassium ions from the cell, thereby resulting in excitation. Through this mechanism, glutamate regulates many signaling pathways, such as those involved in memory, learning, emotions, cognition, motor control, etc.
Melting temperature of RNA duplex will be higher
Explanation:
- RNA is a double stranded RNA with two complementary sequences
- Duplex DNA is simply double stranded DNA
- It is known A=U base pairs of duplex RNA is less stable than that of A=T base pairs of duplex DNA
- RNA duplexes are considered to be more stable than DNA duplexes of comparable sequences but physical basis for thermal stability is not much known hence melting temperature of RNA duplex will be higher
