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Papessa [141]
3 years ago
9

Which of these lists the components of a reflex arc in the correct sequence? Which of these lists the components of a reflex arc

in the correct sequence? receptor; efferent neuron; control center; afferent neuron; effector receptor; efferent neuron; effector; afferent neuron; control center receptor; afferent neuron; control center; efferent neuron; effector receptor; afferent neuron; efferent neuron; control center; effector R
Biology
1 answer:
kobusy [5.1K]3 years ago
3 0

Answer:

Receptor, afferent neuron, control center, efferent neuron, effector muscle (the options are not given in the correct way therefore the options are arranged in sequence)

Explanation:

Reflex arc refers to the neuronal pathway which is activated during the reflex or emergency actions in the body.

The reflex arc pathway is a very fast response as it shortens the time of the neuronal pathway.

When the receptor senses the reflex stimuli, it immediately generates the signals and transmits them to the spinal cord through the afferent or sensory neuron. When the signal reaches the spinal cord then the signals are perceived by the interneurons or control centre of the spinal cord and then transmit the response to the effector muscle through the efferent neuron or the motor neuron. This whole pathway is followed in just a few milliseconds.

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Genes that are encoded for polymerases, gyrases, ribosomal proteins, and other proteins essential to replication, transcription,
Lena [83]

Answer:

A) chromosomes is the correct answer.

Explanation:

Chromosomes are present in nuclei of animals and plants and they are composed of protein and DNA.

functions of chromosomes

  • Chromosomes are required for the formation of daughter cells, replication and cell division process.
  • Chromosomes carry the genetic material called DNA that provides genetic information to carry out the different cellular processes and functions.

5 0
3 years ago
A normal breath takes in about 1.0 L of air. If air has an average molar mass of 28.8 g per 1 mol and has a density of 0.97 g/mL
Ann [662]

Taking into account the definition of density and Avogadro's Number, you take 2.0286×10²⁵ molecules of air.

<h3>What is density</h3>

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

density=\frac{mass}{volume}

<h3>What is Avogadro's Number</h3>

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

<h3>Amount of molecules of air</h3>

In this case, you know that:

  • Density= 0.97 \frac{g}{mL}
  • Volume= 1 L= 1000 mL

Replacing in the definition of density:

0.97 \frac{g}{mL}=\frac{mass}{1000 mL}

Solving:

mass= 0.97 \frac{g}{mL}  ×1000 mL

<u><em>mass= 970 g</em></u>

Air has an average molar mass of 28.8 g per 1 mol. Then 970 grams are contained in 33.68 moles.

Now, considering the definition of Avogadro's number you can apply the following rule of three: If 1 mole of air contains 6.023×10²³ molecules, 33.68 moles contains how many molecules?

amount of molecules = (33.68 moles× 6.023×10²³ molecules)÷ 1 mole

<u><em>amount of molecules= 2.0286×10²⁵ molecules</em></u>

Finally, you take 2.0286×10²⁵ molecules of air.

Learn more about

density:

brainly.com/question/952755

brainly.com/question/1462554

Avogadro's Number:

brainly.com/question/11907018

brainly.com/question/1445383

brainly.com/question/1528951

#SPJ11

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PtichkaEL [24]

Answer:

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What might happen if there were an extra nitrogen base deleted from the mRNA code
shutvik [7]
“Extra” base?
Just trying to help!

7 0
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