Out of the following given choices;
A) excitatory, but not inhibitory, synapses
B) inhibitory, but not excitatory, synapses
C) electrical synapses
D) ligand-gated ion channels
The answer is D. These are transmembrane ion-channel proteins that open to allow ions such as Na, K, Ca, and/or Cl to pass through the membrane in response to the binding of a chemical messenger (i.e. a ligand), such as a neurotransmitter.
The nucleotide triplet that encodes an amino acid<span> is called a </span>codon. Each group ofthree<span> nucleotides encodes one </span>amino acid<span>. Since there are 64 combinations of 4 nucleotides taken </span>three<span> at a time and only 20 </span>amino acids<span>, the code is degenerate (more than one </span>codon<span> per </span>amino acid<span>, in most cases).</span>
We can help in reducing the problem of waste disposal by these methods:
→ By separating biodegradable substances from non-biodegradable substances.
→ By reducing, reusing and recycling non-biodegradable substances.
Answer: I remember dong this back in October !
Explanation:
Ok so boom....
Control - Only mice near the radio
Independent - Amount of radio wave exposure
Experimental - Mice near the radio
Dependent - Change in strength
Hope that helps