Which of the following is not a function of smooth muscle tissue? forcing blood from the heart into the major arteries forcing urine out of the urinary tract moving food materials along the digestive tract elevating hairs on the arm altering the diameter of the respiratory passageways

Answers

Answer 1

Answer:

Answer:

The correct answer is-forcing blood from the heart into the major arteries

Explanation:

Heart is not made up of smooth muscles rather it is mainly made up of a specialized type of muscle called cardiac muscle which helps in the contraction of heath that results in the forcing blood from the heart into the major arteries.

Cardiac muscle is straited muscle but smooth muscle is not straited muscle. These smooth muscles are mainly present in the organs which have hollow walls like urinary tract, digestive tract, blood vessels, etc.

Therefore forcing blood from the heart into the major arteries is not a function of smooth muscle tissue.

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A complete circuit contains two parallel-connected devices and a generator for providing the electromotive force. The resistance of the first device is 12 ohms, the resistance of the second device is 4 ohms, and the voltage developed by the generator is 40 V. What is the magnitude of the current flowing through the first device? A. 10 A B. 13.32 A C. 8 A D. 3.33 A

Answers

The answer is D. 3.33 A

In parallel connected devices, circuits are also placed parallel. It is known that in parallel circuits, total voltage is equal to the voltage of each device.

So, we know that:
Device 1 - R1 = 12 ohms
Device 2 - R2 = 4 ohms
Total voltage - V = 40V = V1 = V2

If V = I × R, for the first device is V1 = I1/R1.
⇒ I1 = V1 ÷ R1
⇒ I1 = 40 V ÷ 12 ohms
⇒ I1 = 3,33 A

Answer:

D. 3.33 A 100%

Explanation:

What causes chemical weathering?a.
damage caused by animals and plants
c.
natural acids
b.
ice wedging
d.
physical factors

Answers

natural acids because chemicals erode rocks in chemical weathering

OK so basically Chemical weathering occurs from rain and other things that are washed in with it so best choice will be to go with option C. Natural Acids.

What is the special function of the mucosa in the esophagus that explains why it is relatively thick and smooth while in most areas of the digestive tract the mucosa is relatively thin and folded?

Answers

Answer;

To protect the rest of the esophagus from sharp food particles and stomach acid.

Explanation;

The mucosa is the innermost layer, and functions in absorption and secretion. It is composed of epithelium cells and a thin connective tissue.

It contains specialized goblet cells that secrete sticky mucus throughout the GI tract, that prevents the corrosion of the stomach walls and esophagus from sharp food particles and the acids from the stomach.

Which of the following is evidence for how the composition of the atmosphere has changed on Earth over time? a. Bands of iron found in rock layers show that the Earth's atmosphere became oxygenated by photosynthetic cyanobacteria millions of years ago.
b. Frequent volcanic eruptions have caused the Earth's atmosphere to fill with sulfur aerosols dropping the temperature globally by 5 degrees.
c. Multiple ice ages in the 18th century have caused a shift in atmospheric circulation on present day Earth.
d. Over the past 50 years, greenhouse gas concentrations have rapidly decreased in the atmosphere.

Answers

Hello there.

Which of the following is evidence for how the composition of the atmosphere has changed on Earth over time?

Multiple ice ages in the 18th century have caused a shift in atmospheric circulation on present day Earth.

Plz Help Me Will make brainliest if got it right!!!

Answers

Answer:

Sorry if I'm wrong but I think it's B

Explanation:

A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.

It’s b I had to do a project on the same bottle neck topic

If an enzyme is absent during polypeptide production, a mutation can occur.

Answers

If you are asking if it is a true or false statement, it is a false statement. A mutation cannot possibly occur during polypeptide production or any protein synthesis or process. However, mutation may occur if the protein or enzyme is involved in any DNA replication or transcription process.

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Overpopulation impacts the environment primarily bylimiting land available for crops.destroying natural resources.causing the removal of trees.interfering with normal plant growth.

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