<span>The juxtaglomerular apparatus is a structure (formed by the distal convoluted tubule and the glomerular afferent arteriole) with the function in the regulation of blood pressure and the filtration rate of the glomerulus. Its primary components are:
</span> <span><span>·     </span>the macula densa- specialized epithelial cells in the distal convoluted tubule (detect Na concentration),
</span> <span><span>·     </span>juxtaglomerular cells- formed from the smooth muscle cells of the afferent arteriole (secrete renin),</span> 
<span><span>·     </span>extraglomerular mesangial cells (lacis cells)-unknown function.</span> <span> </span>
        
             
        
        
        
Answer: Hetrotypes are organisms (anything that lives) that can make it's own energy without absorbing it from other organisms. Example: Flowers, they get there energy from the sun, not from eating and absorbing other organisms.
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Answer:
The ATP and NADPH from light reaction serve as an energy source and reducing power respectively during the Calvin cycle, which is also called the dark phase of photosynthesis.
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Answer:
to contract a muscle, myosin and actin filaments shorten, requiring ATP binding and hydrolysis
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One advantage of asexual reproduction is that animals can <span>increase their numbers rapidly.  The other options in the question are incorrect and so avoided. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has helped you.</span>