I had to look for the options and here is my answer:
The lipids that could be classified as a precursor for both testosterone and Vitamin D is cholesterol. It has been studied that Vitamin D can have a direct effect on the levels of cholesterol in the body especially for women who are obese and postmenopausal.
        
             
        
        
        
Answer:
Diploid is a cell or organism that has paired chromosomes, one from each parent. In humans, cells other than human sex cells, are diploid and have 23 pairs of chromosomes. Human sex cells (egg and sperm cells) contain a single set of chromosomes and are known as haploid
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Answer:
Characteristics of an Enzyme :
 -Speed up chemical reactions.
 -They are required in minute amounts.
 -They are highly specific in their action.
 -They are affected by temperature.
 -They are affected by pH.
 -Some catalyze reversible reactions.
 -Some require coenzymes.
 -They are inhibited by inhibitors.
 
 
        
             
        
        
        
The best and most accurate technique to identify the appropriate vein site for iv catheter insertion into the arm is to apply a tourniquet approximately 4 to 6 inches above in the arm where the catheter is to be inserted. 
Applying the tourniquet causes the vein to swell from inside due to the pressure which makes the intended insertion point much more clear and visible and helps the nurse to determine if the vein is capable of accommodating the iv catheter.