Which of the following store most energy per unit weight?
a. Carbohydrates
b. Lipids
c. Proteins
d. Nucleic acids
Ans: b. Lipids
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Match the terms with the labeled structures on the diagram. 
nucleus
Fill in the blank(s) with the appropriate word(s).
Broad, flat, deciduous leaves are fan shaped; ovules develop into naked seeds.
a. Mosses b. Ferns c. Conifers d. Gingkos e. Angiosperms
Which of the following types of bonds require electrons to be shared between atoms?
a. non-polar covalent only b. polar covalent only c. ionic only d. both polar and non-polar covalent
Which of the following statements about Candida is FALSE?
A) It is present in the digestive tract of 40-80% of all healthy individuals. B) It can be transmitted to adults during sexual contact. C) It is easily treated with topical antifungals in immunocompromised patients. D) It causes thrush. E) It can be passed to babies during childbirth.