Which of the following nutrients can yield energy and provide materials for forming the structures and working parts of body tissues 1) carbohydrates 2) protein 3) fats 4) vitamins

2) protein

Explanation:

Protein is one of the important nutrients that is required by the body. Protein functions as an energy yielding nutrient in the body. It also provides structures required for development of muscular structure in the body as well as repair of an worn out working tissues found in the body.

Protein can be found in foods such as Fish, Meat, Chicken, Egg, Cream, Cheese, legumes, grains e.t.c.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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protist eukaryotes that are not plants, animals, or fungi ("misfits")