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mixas84 [53]
3 years ago
7

Reflex actions are automatic and do not involve thinking. Why is this an advantage?

Biology
1 answer:
pantera1 [17]3 years ago
8 0

Answer:

You don't have to think about it because the response is a reflex that does not involve the brain. A reflex is a rapid, unlearned, involuntary response to a stimulus. Reflexes are responses that protect the body from potentially harmful events that require immediate action.

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A. circle the portion of the molecule in model 1 that is polar.
xxMikexx [17]
Attached is Model 1. I found the exercise on the internet.

A. The portion of the molecule that's polar is the head of the molecule - phosphorus containing group plus the glycerol backbone.
The other part of the molecule has two fatty acid chains which are hydrophobic meaning that they are nonpolar.

B. Yes, it would mix well with water because polar molecules are dissolved in water perfectly. Their partly positive portion and their negative polar connect to the positive charge of the H atoms and negative charge of the O atom of the water molecules.

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FromTheMoon [43]
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4 years ago
Name any two substances which are selectively reabsorbed from the tubules of a nephron.
fgiga [73]

Answer:

Two substances which are selectively reabsorbed from the tubules of a nephron are Amino acids and Glucose.

Explanation:

The majority of the vital nutrients (which do not have to be discharged out) are recovered by the bloodstream out from tubule of the nephron all through re - absorption, a key procedure in urine production that primarily takes place in the PCT of the nephron. Proximal tubule includes unique cuboidal epithelial cells having microvilli towards the lumen for completing this. Higher substance reabsorption is a result of this. Because glucose and amino acids seem to be essential to the organism, hence the nephron's tubules reabsorb them. Moreover, sodium, water and other ions like sodium can also be reabsorbed by nephrons. Furthermore nephron tubules are in charge of waste product elimination and nutrient absorption.

You can get more information from the following link:

brainly.com/question/12993721

#SPJ4

6 0
1 year ago
Definition: A thin, flexible, semipermeable barrier around the cell which regulates what enters and leaves
Anettt [7]
It’s a cell membrane
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klasskru [66]

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5 carbon sugar,ribose-a nitrogenous base and three phosphate groups

Explanation:

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