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3 years ago

I give you brilliant

Biology

1 answer:

romanna [79]3 years ago

4 0

Answer:

Adenine and Guanine

Explanation:

These two bases are included in the 4 types of nitrogenous bases. Which are the two purine bases (which are Adenine and Guanine)

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Activities of the digestive system generally increase when it is stimulated by parasympathetic impulses. sensory impulses. somat

masha68 [24]

Am certain that the activities of the digestive system generally increase when it is stimulated by parasympathetic impulses.
The parasympathetic nervous system i one of the three division of the ANS which is sometimes referred as the rest and digest system, the parasympathetic system conserves energy as it slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles in the gastrointestinal tract.

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3 years ago

storchak [24]

Answer:

jbd GG ggrrstdsytdytdytdfxtrzt

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3 years ago

What class of organic molecules does dna belong and what are the subunits of this class?

Nostrana [21]

DNA, also known as deoxyribonucleic acid, belongs to a class of polymeric organic macromolecules called nucleic acids. The only other member of this class is ribonucleic acid, or RNA. Nucleic acids were first discovered in 1869 by the Swiss scientist Friedrich Miescher.

DNA and RNA play important roles as genetic information carriers in biology, enabling the mechanisms of heredity and protein synthesis. Nucleic acids are polymers of nucleotides, which are composed of a five-carbon sugar, also called a pentose sugar, a nitrogenous base and a phosphate group. The sugar is deoxyribose, in the case of DNA, and ribose, in the case of RNA.

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3 years ago

Read 2 more answers

1 Sequence List the sequence of steps that happens

JulsSmile [24]

Answer:

When a doctor strikes the child's kneecap:

The sensory receptors located in the tendon receive the stimulus.
Information travels by afferent pathway through the sensory component of motor nerve
The integration center, in the spinal cord, receives the information and sends a motor response by efferent pathway.
The quadriceps contracts and extends the leg.

Explanation:

The patellar reflex —by hitting the kneecap tendon—is an example of a reflex arc, which produces the extension of the leg over the knee as an involuntary response to the stimulus to strike the patellar tendon.

This reflex has five main components:

Receptor.
Sensitive fibers of a motor nerve (afferent pathway)
Spinal cord integration center.
Motor nerve fibers (efferent pathway).
Effector.

The reflex arc occurs because the stimulus received does not travel to the brain, but to the spinal cord, which causes the reflex response to be faster.

When the doctor strikes sensory neurons below the boy's kneecap, the following sequence of events occurs:

The sensory receptors located in the tendon receive the stimulus.
Information travels by afferent pathway through the sensory component of the femoral nerve.
The integration center, in the spinal cord, receives theinformation and sends a motor response by efferent pathway.
The quadriceps contracts and extends the leg.

The patellar reflex evaluates the integrality of the reflex arc at that level, whose synapse occurs between the lumbar segments of the spinal nerve L₂ and L₄.

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3 years ago

Plants need building materials beyond the glucose provided by photosynthesis in order to thrive. The presence of which element i

Viefleur [7K]

The correct answer is: nitrogen, which is not present in glucose, but it is present in auxin.

Nitrogen is one of the essential elements of plant which is involved in plants’ metabolic processes. It is being absorbed from the soil in the form of nitrate ions. Since nitrogen is important and often a limiting factor for plants, it is present in different fertilizers.

One of the roles of nitrogen in plants is structural. It is component of amino acids and nucleic acids. Also, present in the chlorophyll.

Nitrogen enhance the rate of photosynthesis and improves growth and development of the plant..

3 0

3 years ago