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3 years ago

The building block that makes up a nucleic acid is a(n) _______. Someone help please ??

Biology

1 answer:

Alex787 [66]3 years ago

5 0

The building block that makes up a nucleic acid is nucleotides.

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A person with prediabetes has a fasting blood glucose level of _____.

vlada-n [284]

Answer;

C. 100 - 125 mg/dL

A person with prediabetes has a fasting blood glucose level of 100-125 mg/dL.

Explanation;

-A fasting blood sugar level below 100 milligrams per deciliter (mg/dL) — 5.6 millimoles per liter (mmol/L) — is considered normal.

-A fasting blood sugar level from 100 to 125 mg/dL (5.6 to 7.0 mmol/L) is considered prediabetes. This result is sometimes called impaired fasting glucose. A fasting blood sugar level of 126 mg/dL (7.0 mmol/L) or higher indicates type 2 diabetes.

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2 years ago

Plants participate in both short- and long-distance signaling. Explain how nerve cells show these two functions, as well. (3 poi

olya-2409 [2.1K]

Answer:

Nerve cells release chemical signals into synapses between them (short distance). They also transverse their lengths with an electrical signal that can result in signal travel along a series of cells (long distance).

Explanation:

Nerve cells release neurotransmitters in the synaptic cleft which are capable of affecting nearby cells such as other nerve cells and muscle cells. Neurotransmitter molecules include, among others, serotonin, acetylcholine, dopamine, norepinephrine and histamine. Moreover, the synaptic cleft is the space that separates a neuron cell and its target cell. On the other hand, neurons transmit signals through electrical impulses. Electrical impulses travel long distances in the body carried by axons of the nerves. Thus, nerve impulses connect the brain and spinal cord and they carry signals to different parts of the body.

5 0

2 years ago

Please select the word from the list that best fits the definition

Digiron [165]

C hope this helps. ............

6 0

3 years ago

There are 258 g of MgCl2/liter. What is the molarity of the solution?

Zolol [24]

Taking into account the definition of molarity, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

<h3>Definition of molarity</h3>

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

molarity= number of moles÷ volume

<h3>Molarity of the solution in this case</h3>

In this case, you know that the molar mass of MgCl₂ is 95.21 g/mole [molar mass is the amount of mass that a substance contains in one mole.]

You can apply the following rule of three: If by definition of molar mass 95.21 grams are contained in 1 mole, 258 grams are contained in how many moles?

amount of moles= (258 grams× 1 mole)÷ 95.21 grams

<u><em>amount of moles= 2.7098 moles</em></u>

Replacing in the definition of molarity:

258 g of MgCl₂/liter= <u><em>2.7098 moles of MgCl₂/liter</em></u>

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Finally, the molarity of the solution is 2.7098 moles of MgCl₂/liter.

Learn more about molarity:

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1 year ago

Does asthma affect anything else besides just your breathing?

IrinaVladis [17]

Answer:

The classic symptoms of asthma include wheezing, coughing, tightness in your chest, and feeling short of breath. But other conditions — like allergies, chronic obstructive pulmonary disease (COPD), sleep apnea, and post nasal drip — can trigger the same problems.

Explanation:

8 0

3 years ago

Read 2 more answers