Answer the following question given this paragraph: Gestation (pregnancy) lasts 8-9 months and usually results in the birth of a single offspring. The young are born helpless, and thus, they need parental care for long periods of time. Compared with most other mammals, great apes have a long adolescence and are not fully mature until 8-13 years of age (longer in humans). Females usually give birth only once every few years. Q: In great apes, what process lasts 8-9 months and usually results in the birth of a single offspring? Choices: - mating - hibernation - reproduction - gestation A:
gestation
(Question)
Answer the following question given this paragraph: When current flows in just one direction, it is called direct current (DC) . The current that flows through a battery-powered flashlight is direct current. Q: When current flows in just one direction, what is it called? Choices: - mono-current - reactant current - alternating current - direct current A:
(Answer)
direct current
Ques: Answer the following question given this paragraph: Membranes Biological membranes surround cells and serve to keep the insides separated from the outsides. They are formed of phospholipid bilayer1 s, which by definition are a double layer of fatty acid2 molecules (mostly phospholipid3 s, lipids containing lots of phosphorus). Proteins4 serve very important functions in cellular membranes. They are active transports in and out of the cell, acting as gatekeepers. They relay signals in and out of the cell. Proteins are the site of many enzymatic reactions in the cell, and play a role in regulation of cellular processes. Q: What is it that surrounds cells and serve to keep the insides separated from the outsides? Choices: - inner membranes - abundant membranes - similar membranes - biological membranes A:
Ans: biological membranes
(Q).
Answer the following question given this paragraph: In this lesson, you learned that electromagnetic waves are transverse waves. Like other transverse waves, electromagnetic waves have certain properties. Q: What kind of waves are electromagnetic waves? Choices: - amplitude - curved - inverse - transverse A:
(A).
transverse
Ques:Answer the following question given this paragraph: The structure of a mitochondrion is defined by an inner and outer membrane. This structure plays an important role in aerobic respiration. Q: The structure of mitochondrion plays an important role in what? Choices: - cell division - sexual reproduction - magnetism - aerobic respiration A:

Ans:aerobic respiration
Ques: Answer the following question given this paragraph: Air movement takes place in the troposphere. This is the lowest layer of the atmosphere. Air moves because of differences in heating. These differences create convection currents and winds ( Figure below ). Q: What is the lowest layer of the atmosphere called? Choices: - mesosphere - lithosphere - asthenosphere - troposphere A:
Ans:
troposphere