Answer the following question given this paragraph: Myriapoda, which includes centipedes and millipedes. All of these animals live on land, and can have anywhere from ten to nearly 200 pairs of appendages. Q: What class are centipedes and millipedes in? Choices: - xerophyte - spirogyra - terapoda - myriapoda A:
myriapoda
(Question)
Answer the following question given this paragraph: Figure 7.13 Lateral Wall of Nasal Cavity The three nasal conchae are curved bones that project from the lateral walls of the nasal cavity. The superior nasal concha and middle nasal concha are parts of the ethmoid bone. The inferior nasal concha is an independent bone of the skull. Q: The superior nasal concha and middle nasal concha are parts of which bone? Choices: - nostril bone - gastrulation bone - nasal bone - ethmoid bone A:
(Answer)
ethmoid bone
Ques: Answer the following question given this paragraph: The placenta is a spongy mass of blood vessels. Some of the vessels come from the mother. Some come from the fetus. The placenta is attached to the inside of the mother's uterus. The fetus is connected to the placenta by a tube called the umbilical cord . The cord contains two arteries and a vein. Substances pass back and forth between the mother's and fetus's blood through the placenta and cord. Oxygen and nutrients pass from the mother to the fetus. Carbon dioxide passes from the fetus to the mother. Q: The fetus is connected to what by a tube called the umbilical cord? Choices: - Stomach - Intestines - Fallopian tube - placenta A:
Ans: placenta
(Q).
Answer the following question given this paragraph: A secondary alcohol forms a ketone when oxidized. The secondary alcohol cannot be further oxidized to produce a carboxylic acid. Tertiary alcohols cannot be oxidized in this way, because the carbon atom bonded to the OH group is not also bonded to any hydrogens. Q: What forms a ketone when oxidized? Choices: - enzyme - aldehyde - carbolic acid - secondary alcohol A:
(A).
secondary alcohol
Ques:Answer the following question given this paragraph: Chemistry in Everyday Life Transition Metal Catalysts One of the most important applications of transition metals is as industrial catalysts. As you recall from the chapter on kinetics, a catalyst increases the rate of reaction by lowering the activation energy and is regenerated in the catalytic cycle. Over 90% of all manufactured products are made with the aid of one or more catalysts. The ability to bind ligands and change oxidation states makes transition metal catalysts well suited for catalytic applications. Vanadium oxide is used to produce 230,000,000 tons of sulfuric acid worldwide each year, which in turn is used to make everything from fertilizers to cans for food. Plastics are made with the aid of transition metal catalysts, along with detergents, fertilizers, paints, and more (see Figure 19.26). Very complicated pharmaceuticals are manufactured with catalysts that are selective, reacting with one specific bond out of a large number of possibilities. Catalysts allow processes to be more economical and more environmentally friendly. Developing new catalysts and better understanding of existing systems are important areas of current research. Q: What happens if a catalyst runs out? Choices: - variety slows - variety increases - reaction increases - reaction slows A:

Ans:reaction slows
Answer the following question given this paragraph: More than 1000 different enzymes are necessary for human life. Many enzymes are needed for the digestion of food. Two examples are amylase and pepsin. Both are described in the Figure below . Q: Amylase and pepsin are examples of enzymes needed for what process? Choices: - fermentation - absorption - filtration - digestion A:
digestion