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.
The cardiovascular system focuses more on pumping blood all throughout the parts of the body which mean the heart, capillaries, veins, and arteries are all involved in this. The Respiratory System is all about the gas exchange that is happening in your body which involves the lungs, oral and nasal cavities.
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.
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Answer:
5 carbon sugar,ribose-a nitrogenous base and three phosphate groups
Explanation: