Answer the following question given this paragraph: Puberty lasts from about ages 12 to 18 years and is controlled by hormones. Q: What chemical affects the onset of puberty and duration? Choices: - steroids - enzymes - acids - hormones A:
hormones
(Question)
Answer the following question given this paragraph: The epidermis is the outermost layer of the skin. It forms the waterproof, protective wrap over the body's surface. Although the top layer of epidermis is only about as thick as a sheet of paper, it is made up of 25 to 30 layers of cells. The epidermis also contains cells that produce melanin. Melanin is the brownish pigment that gives skin and hair their color. Melanin-producing cells are found in the bottom layer of the epidermis. The epidermis does not have any blood vessels. The lower part of the epidermis receives blood by diffusion from blood vessels of the dermis. Q: What is the outermost layer of the skin? Choices: - dermis - nexus - callus - epidermis A:
(Answer)
epidermis
Ques: Answer the following question given this paragraph: Q: What does some amphibians have as juveniles but not as adults living on land? Choices: - microscopic line system - kinetic line system - vertical line system - lateral line system A:
Ans: lateral line system
(Q).
Answer the following question given this paragraph: Some bacteria also have tail-like structures called flagella ( Figure below ). Flagella help bacteria move. As the flagella rotate, they spin the bacteria and propel them forward. Though some eukaryotic cells do have a flagella, a flagella in eukaryotes is rare. Q: Some bacteria also have tail-like structures called what? Choices: - plasmids - sporangia - nuclei - flagella A:
(A).
flagella
Ques:Answer the following question given this paragraph: Viruses are classified on the basis of several traits. For example, they may be classified by capsid shape, presence or absence of an envelope, and type of nucleic acid. Most systems of classifying viruses identify at least 20 virus families. Table below shows four examples of virus families and their traits. Have any of these viruses made you sick?. Q: Lampreys use their sucker to feed on what part of other fish species? Choices: - heart - brain - liver - blood A:

Ans:blood
Question: Answer the following question given this paragraph: Q: Besides the inner membrane, where are many respiratory enzymes found? Choices: - alveoli - golgi apparatus - cytoplasm - the matrix A:
Answer:
the matrix