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kifflom [539]
3 years ago
9

How do organisms use different types of carbon compounds?

Biology
1 answer:
fgiga [73]3 years ago
6 0
<span>Carbon is the building blocks of all living molecules. With the ability to form carbon-carbon bonds, many different compounds formed into different structures can be used for different purposes such as macromolecules.  </span>
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Mixed cranial nerves containing both motor and sensory fibers include all except which of the following?
Fed [463]

Answer:

Answer is option D.

Olfactory nerve is a sensory cranial nerve.

Explanation:

Nerves are the part of peripheral nervous system, which transmit signals from brain or spinal cord (central nervous system) to the different parts of the body and vice versa.

Based on the direction of signal transmission, they are classified into three groups;  sensory nerves (afferent nerves) pass signals from sensory receptors (pain, pressure, temperature etc) in various parts of the body to the central nervous system, motor nerves (efferent nerves) transmit signals from the central nervous system to the muscles and glands all throughout the body, mixed nerves contain both sensory and motor fibers which conduct both sensory information and muscle commands throughout the body.

Based on where they are connected to the central nervous system, they are classified into two groups; spinal nerves connected to the spinal cord and cranial nerves attached to the brain.  All the 31 spinal nerves are combined sensory and motor axons.

Of the 12 cranial nerves, three are sensory nerves, four are motor nerves and five are mixed nerves. The sensory cranial nerves are olfactory (smell), optic (vision) and acoustovestibular (hearing and balance) nerves.  The motor cranial nerves are trochlear (controls the superior oblique muscle of the eyeball), abducens (controls the lateral rectus muscle of the eyeball), accessory (controls the trapezius muscle in the back and shoulders), hypoglossal (controls the muscles of the throat and helps in swallowing) nerves.  The five mixed cranial nerves are occulomotor, trigeminal, facial, glossopharyngeal and vagus nerves.

6 0
3 years ago
Which statement is true of the X chromosome?
alexgriva [62]

Answer:

The correct option is D

Explanation:

A male sperm needs a x chromosome and y chromosome , whereas a female sperm needs 2 x chromosomes , Thus both genders needing x chromosome

4 0
1 year ago
Which of the following is a characteristic of hydrologic fracturing?
jeyben [28]

Answer:

<u>A. Large amounts of water force open cracks in rocks</u>

Explanation:

Hydraulic fracturing, or fracking, is a drilling method used to extract petroleum (oil) or natural gas from deep in the Earth. In the fracking process, cracks in and below the Earth's surface are opened and widened by injecting water, chemicals, and sand at high pressure.

A is basically explaining this the same way. Forcing cracks in the ground with liquids.

Hopefully I was a help to you. If not I am sorry and I wish you the most wonderful of days. :)

3 0
2 years ago
A forty-five-year-old woman is a heavy drinker, smoker, and has had many sexual partners. Certain types of the female reproducti
WINSTONCH [101]
<span>D.
her sexual behavior and smoking</span>
4 0
3 years ago
Read 2 more answers
What once was an open pasture on a long abandoned farm has changed over time, without the direct influence of humans. after the
Komok [63]

The mentioned case represents secondary succession.  

Secondary succession is one of the two kinds of ecological succession of plant life. Secondary succession refers to a procedure initiated by an incident, like harvesting, forest fire, hurricane, and others, which minimizes an already settled ecosystem to a lesser population of species.  

Thus, it can be said that the secondary succession takes place in preexisting soil on the other hand primary succession takes place in a place devoid of soil.  

Secondary succession is the ecological succession, which takes place after the initial succession has been disrupted and certain plant and animal species do prevail. It is usually faster in comparison to primary succession.  


8 0
3 years ago
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