Answer the following question given this paragraph: Mucous membranes provide a mechanical barrier at body openings. They also line the respiratory, GI, urinary, and reproductive tracts. Mucous membranes secrete mucus , a slimy substance that traps pathogens. The membranes also have hair-like cilia. The cilia sweep mucus and pathogens toward body openings where they can be removed from the body. When you sneeze or cough, pathogens are removed from the nose and throat (see Figure below ). Tears wash pathogens from the eyes, and urine flushes pathogens out of the urinary tract. You can watch the sweeping action of cilia at the following link: http://mcdb. colorado. edu/courses/2115/units/Other/mucus%20animation. swf . Q: The tiny hair present on mucus membranes is known as? Choices: - tissue - collagen - dendrites - cilia A:
cilia
(Question)
Answer the following question given this paragraph: Q: What is the term for going into a dormant state during the winter? Choices: - gestation - fermentation - homeostasis - hibernation A:
(Answer)
hibernation
Ques: Answer the following question given this paragraph: Pedigree for Color Blindness. Color blindness is an X-linked recessive trait. Mothers pass the recessive allele for the trait to their sons, who pass it to their daughters. Q: What type of x-linked trait is color blindness? Choices: - conscientiousness trait - dominant - predominant - recessive A:
Ans: recessive
(Q).
Answer the following question given this paragraph: When hydrogen gas is reacted with oxygen gas, water is formed as the product. Q: Water is formed from oxygen and what other element? Choices: - calcium - helium - lead - hydrogen A:
(A).
hydrogen
Ques:Answer the following question given this paragraph: Volcanoes can be active, dormant, or extinct. Q: Volcanoes can be active, dormant, or what else? Choices: - remnant - still - burgeoning - extinct A:

Ans:extinct
Answer the following question given this paragraph: Several lethal viruses that cause viral hemorrhagic fever have been discovered, two of which are shown in the Figure below . Ebola outbreaks have been limited mainly to remote areas of the world. However, they have gained extensive media attention because of the high mortality rate23 percent to 90 percentdepending on the strain. The primary hosts of the viruses are thought to be apes in west central Africa, but the virus has also been isolated from bats in the same region. Q: What are the 2 primary hosts of ebola in central africa? Choices: - hyenas and apes - apes and hippos - lions and elephants - apes and bats A:
apes and bats