Essay - What Is the Chemical Composition of These Oval Bodies? Starch....

What is the chemical composition of these oval bodies? Starch.

What is the color ***** the small oval bodies? Blue-black.

Table 3.4 Iodine Tests for *****

Sample Color Change Conclusions

Tube 1: Starch *****. Starch is present.

Tube 2: Water Yellow-brown. Starch is not present.

Potato Blue-black. Starch is present.

Onion Yellow-brown. Starch is not present.

Sugar are an immediate energy souce in cells. In plant *****, glucose (a primary energy molecule) is often stored in ***** form of starch. Is glucose stored as ***** in the potato? Yes.

***** glucose stored ***** starch ***** the onion? No.

Table 3.6 Benedict's Reagent Test

***** Contents Color(After Heating) *****

Water Blue ***** reducing sugars present.

Glucose Solution Orange High concentration of ***** sugars *****.

***** juice Orange ***** concentration ***** reducing sugars present.

Potato juice ***** No reducing sugars present.

Starch suspension Blue ***** reducing sugars present.

Which tube served as a control? Tube 1 containing water w***** the