Which structure below is unique to organisms that harness solar energy to make sugar?
A. Endoplasmic reticulum
B. Chloroplast
C. Plasma membrane
D. Chromosome
E. Nuclear envelope
Answer: B
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Answer the following statements true (T) or false (F)
1. Although land plants, mosses are still tied to water because of their flagellated sperm. 2. The conspicuous green patches of mosses that you see in the woods are mostly sporophytes. 3. The conspicuous green parts of ferns that you see in the woods are mostly sporophytes. 4. Flowers, fruits, and endosperm are defining characteristics of the angiosperms.
The last step of aerobic respiration is referred to as which of the following?
a. the Calvin Cycle b. the Krebs Cycle c. oxidative phosphorylation d. the citric acid cycle
What new information was conclusively demonstrated by the Hershey and Chase experiment pictured on the previous slide?
1.DNA contains phosphorous but not sulfur.
2.Prophage DNA was injected into the bacterial cells while prophage protein remained outside.
3.DNA is the genetic material.
4.Protein contains sulfur but not phosphorous.
5.Prophage protein was injected into the bacterial cells while prophage DNA remained outside.
Women who become pregnant are encouraged to take supplements of ________ because a deficiency in this nutrient can cause birth defects
A) vitamin K B) choline C) folic acid D) vitamin C E) biotin