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MAXImum [283]
3 years ago
12

Which is a model used to protect possible genotypes and phenotypes of offspring

Biology
1 answer:
-Dominant- [34]3 years ago
5 0
The Punnet Square is used to determine the genotype and phenotype
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Which experiment should be conducted as a field investigation? observing changes in the nesting behavior of wood ducks measuring
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Observing changes in the nesting behavior of wood ducks should be conducted as a field investigation.

Explanation:

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All of the following are functions of the peripheral nervous system except
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The right option is; it interprets signals from the external environment  

The peripheral nervous system (PNS) is made up of all parts of the nervous system, except the brain and spinal cord (parts of the central nervous system). The peripheral nervous system functions as a channel through which neural signals are transferred from and to the central nervous system. Two types of neurons (sensory and motor neurons) functions in the PNS. The motor neurons transfer neural signals from the central nervous system directly to various muscles, glands, and organs (effectors) throughout the body.


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Select the correct answer.
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I suppose it’s recycle; she’s reusing her own bags.
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What is the basis for the delay between the atrial and ventricular contractions in a normal heart?
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The main responsible for the delay among the atrial and ventricular contractions is the action potential conduction velocity of the AV node cells. If the atria and ventricles contract simultaneously, atria cannot give any help in filling the ventricles, which is needed, especially in those with stiff ventricles as in the elderly. Hence atria have to contract first and then the ventricles.

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Read each description below and determine whether or not it describes a function or property of cerebrospinal fluid. Identify wh
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Produced by the choroid plexus -T.This is the major secretion site.It is also produced in smaller quantities in the interstitial compartment.

Blocks blood toxins from brain tissue-F, that is the job of  the blood brain barrier(BBB).

Supplies oxygen to the brain tissue-T.This gas is dissolved  in the CSF together with CO2 for distribution among nervous tissues by the CSF

Maintains the concentration of glycine surrounding the brain-T

Found in the ventricles of the heart and brain-False,it does not reach the heart ventricles.This are occupied by blood.

Prevents concussions-T

Produces antibodies in response to antigen exposure in the brain tissue-False.These are produced by the B-cells, not by in the CSF,based on the  specif antigen stimulation.

Effectively decreases the brain's weight-T It reduces the weight of the brain.This is done by the buoyancy it provided for the brain.

Compared to levels in the blood plasma, the CSF is higher in glucose-F.This is wrong, the glucose of the blood plasma is higher.But equal sodium ion,more chloride in CSF, and less protein.It s levels is a relefection of blood glucose.Although it may lag 2-4hrs in the CSF.

It prevents concussion,(T)and and the contraction of cardiac muscles propels its movement(T).

Explanation:

7 0
2 years ago
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