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Veseljchak [2.6K]
3 years ago
8

The junction between two communicating neurons is called a _____________; there is a _________ _________ between them across whi

ch the impulse must be conveyed. Synaptic transmission it the process by which the impulse in the presynaptic neuron is transmitted across the synaptic cleft to the postsynaptic neuron. When an impulse reaches the synaptic knob of an axon, synaptic __________ release chemicals called __________ into the synaptic _________. These chemicals react with specific receptors on the postsynaptic membrane.
Biology
2 answers:
slamgirl [31]3 years ago
8 0

Answer:

Explanation:

In the nervous system, a synapse is a structure that permits a

neuron (or nerve cell) to pass an electrical or chemical signal to

another neuron or to the target effector cell.

Neurotransmitter, also called chemical

transmitter or chemical messenger, any of a

group of chemical agents released by neurons

(nerve cells) to stimulate neighbouring neurons

or muscle or gland cells, thus allowing impulses

to be passed from one cell to the next throughout the nervous

system.

the synaptic cleft is the physical space between these two

neurons. the space that separates a neuron and its target cell at a

chemical synapse.

There are steps involved in synaptic transmission, which usually takes place at the neuromuscular junction.

Synapses may be chemical or electrical. In this case, it is a chemical synapse because it involves the transmission of information via chemical mediators.

The release of neurotransmitter molecules into the synaptic cleft is triggered by the influx of calcium ions via voltage-gated ion channels.

LiRa [457]3 years ago
7 0

Answer:

The junction between two communicating neurons is called a <u>synapse</u>; there is a <u>gap</u> between them across which the impulse must be conveyed. Synaptic transmission it the process by which the impulse in the presynaptic neuron is transmitted across the synaptic cleft to the postsynaptic neuron. When an impulse reaches the synaptic knob of an axon, synaptic <u>vesicles</u> release chemicals called <u>neurotransmitters</u> into the synaptic <u>cleft</u>. These chemicals react with specific receptors on the postsynaptic membrane.

Explanation:

These are the key steps involved in synaptic transmission, which usually takes place at the neuromuscular junction.

Synapses may be chemical or electrical. In this case, it is a chemical synapse because it involves the transmission of information via chemical mediators.

The release of neurotransmitter molecules into the synaptic cleft is triggered by the influx of calcium ions via voltage-gated ion channels.

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Answer:

Carbon monoxide and antimycin are classified as electron transport inhibitors, FCCP as uncoupling agent, oligomycin as ATP synthase inhibitors, and bongkrekic acid as transport inhibitor.

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Answer:

No, observed and expected frequencies are different.

Observed frequencies: p2 = 0.56 , 2pq = 0.375, q2 = 0.062

Expected frequencies: p2 = 0.774 , 2pq = 0.211, q2 = 0.014

Explanation:

Given frequency of recessive genotype (q2)= 14/ 1006 = 0.0139

Frequency of recessive allele s (q) = square root of 0.0139 = 0.12

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Observed frequencies in population 2

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A man who is heterozygous for tongue rolling and has a normal vision and a woman who cannot roll her tongue and is heterozygous
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The answer is 3/8

Let T be a dominant allele for tongue rolling and let t be a recessive allele.
Tongue-rolling is a dominant trait. That means that an individual with at least one dominant allele will have the trait:
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Tt - heterozygous individuals able to roll tongue
tt - recessive homozygous individuals able to roll tongue
A heterozygous man (Tt) and recessive homozygous female (tt) will have 2 of 4 children that are able to roll tongue (Tt). Take a look at the attached image: 2 of 4 children (marked yellow on the image) are able to roll tongue (Tt) and 2 of for children are not (tt).
The probability that a child will be able to roll his/her tongue is 2/4 = <span>1/2

</span>Now, let's see what happens with color blindness as an X-linked recessive trait. Let X_V be a dominant allele and X_v be a recessive allele. The genotypes will be as following:
X_VX_V - a female with normal vision
X_VX_v - a heterozygous female with normal vision
X_vX_v - a female with colorblindness
X_VY - a male with normal vision
X_vY - a male with colorblindness
Take look at the attached image. A man with normal vision (X_VY) and a woman heterozygous for colorblindness (X_VX_v) will have 3 of 4 children that have normal vision (marked yellow on the image) and 1 of 4 children with color blindness.
The probability that the child has normal vision is 3/4.

Now, we have two probabilities:
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The probability that the child has normal vision is 3/4.
Since we want both of these traits to occur together, we will just multiply their possibilities:
1/2 * 3/4 = 3/8

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