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: Following the discovery of the electron, J. J. Thomson developed what became known as the " plum pudding " model in 1904. Plum pudding is an English dessert similar to a blueberry muffin. In Thomson's plum pudding model of the atom, the electrons were embedded in a uniform sphere of positive charge like blueberries stuck into a muffin. The positive matter was thought to be jelly- like or a thick soup. The electrons were somewhat mobile. As they got closer to the outer portion of the atom, the positive charge in the region was greater than the neighboring negative charges and the electron would be pulled back more toward the center region of the atom. Q: Thomson's plum pudding model shows the structure of what? Choices: - nucleus - cell - DNA - atom A:
(Answer)
atom
Ques: Answer the following question given this paragraph: Elemental bromine gas can be generated by reacting sodium bromide with elemental chlorine. The other product is sodium chloride. Write a balanced chemical equation for this reaction. Saylor URL: http://www. saylor. org/books. Q: What gas can be generated by reacting sodium bromide with elemental chlorine? Choices: - Molecular Bromine Gas - photons bromine gas - gaseous bromine gas - elemental bromine gas A:
Ans: elemental bromine gas
(Q).
Answer the following question given this paragraph: Amides are prepared by the reaction of a carboxylic acid with ammonia or an amine. Q: What kind of reaction is needed to prepare amides? Choices: - amino acid reaction - oxidize acid reaction - lipophilic acid reaction - carboxylic acid reaction A:
(A).
carboxylic acid reaction
Ques:Answer the following question given this paragraph: 8.2 Chromatin Chromosomes consist of chromatin11 . This is made up of strings of DNA, which typically measure centimeters in length if stretched out. This DNA is wound around a histone12 core and organized into nucleosome13 s. The chromatin14 must be uncoiled for gene expression15 and replication16 . Chromosome micrograph. Q: Chromosomes consist of what material made up of strings of dna? Choices: - mitochondria - gray matter - rna - chromatin A:

Ans:chromatin
Ques:Answer the following question given this paragraph: The most common type of cancer in adult males is cancer of the prostate gland. The prostate gland is part of the male reproductive system. About one third of all cancers in men are prostate cancers. Q: What is the most common type of cancer in adult males? Choices: - lung - leukemia - stomach - prostate A:

Ans:
prostate