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Alika [10]
3 years ago
15

Plz help I can’t get the answer for prompt 1. The letters “T” & “A” are in bold font. I’ll give brainliest and Thanks!

Biology
1 answer:
Leto [7]3 years ago
4 0

Answer:

I think the cauae of substitution they involve swapping of one nucleotide for another during DNA repliction.For example,during repliction,a thymine nucleotide might be inserted in placed of a guanine nucleotide

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Naddika [18.5K]
Excretion I believe let me know if i was wrong.
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3 0
3 years ago
Describe the role of the following in synaptic communication:______.
Scilla [17]

Answer:

1- Ionotropic receptors form ionic channels that allow certain ions to pass through the plasma membrane, and metabotropic receptors, which are associated with G proteins and have a modulating action on synaptic transmission.

2-Neurons communicate with each other through neurotransmitters, which are the molecules responsible for sending signals from one neuron to the next neuron. Neuromodulators also enter into communication between nerve cells.

3-Rapid PPSE occurs when postsynaptic nicotinic receptors on dendrites and neuronal cell bodies are activated through acetylcholine, which causes membrane depolarization and allows the entry of Na and Ca ions.

Acetylcholine also allows the activation of postsynaptic muscarinic receptors, which leads to the slow excitatory postsynaptic potential. This occurs when the channels are Ca and Na open and the K channels are closed.

4-When the neurotransmitters are attached to their receptors, the opening of the ion channels can be opened. This leads to two types of postsynaptic potentials being generated: postsynaptic excitation potentials (PEPs), if the membrane potential is depolarized, and the postsynaptic potential inhibitors (PIPs), if the membrane potential is hyperpolarized.

Explanation:

1-The importance of studying neurotransmitter receptors is that most of the drugs of clinical importance, such as anesthetics, anticonvulsants, etc., are based on the mechanisms of action of these receptors

2-Neurotransmitters allow them to produce or not action potential, serves to activate postsynaptic receptors and are capable of opening ion channels. On the other hand, neuromodulators are responsible for regulating the activity of ion channels.

3-The fast PPSE reaches 15 milliseconds. The slow PPSE lasts approximately 1-2 minutes.

4-PEPs occur when the ionic channels of Na + or Ca2 + are opened, while PIPs when the channels  of K + or CI- are opened.

8 0
3 years ago
What happens in the mitochrondria
NNADVOKAT [17]
Mitochondria is described as the power house of the cell, because it is the cell organelle that process the production of ATP, which is the energy source of the cell. Kreb's cycle occurs in the mitochondria, it is the process by which energy is generated inside the cell, leading to the production of ATP and carbon dioxide and water are given up as waste products.
4 0
3 years ago
Need helppp plss... ​
Thepotemich [5.8K]
I believe it is resources
5 0
3 years ago
DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely expla
Oliga [24]

Answer:

humans and chimpanzees share a relatively recent common ancestor

Explanation:

someone else has asked the same question

4 0
3 years ago
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