Answer the following question given this paragraph: Q: What is the ultimate source of energy for all life on earth? Choices: - its core - Mars - the moon - the sun A:
the sun
(Question)
Answer the following question given this paragraph: Like all chordates, vertebrates are animals with four defining traits, at least during the embryonic stage. The four traits are:. Q: Like all chordates, vertebrates are animals with four defining traits, at least during which stage? Choices: - pupal - larval - adult - embryonic A:
(Answer)
embryonic
Ques: Answer the following question given this paragraph: After an adaptive defense is produced against a pathogen, typically plasma cells first secrete IgM into the blood. BCRs on naive B cells are of the IgM class and occasionally IgD class. IgM molecules make up approximately ten percent of all antibodies. Prior to antibody secretion, plasma cells assemble IgM molecules into pentamers (five individual antibodies) linked by a joining (J) chain, as shown in Figure 42.23. The pentamer arrangement means that these macromolecules can bind ten identical antigens. However, IgM molecules released early in the adaptive immune response do not bind to antigens as stably as IgGs, which are one of the possible types of antibodies secreted in large quantities upon re-exposure to the same pathogen. Figure 42.23 summarizes the properties of immunoglobulins and illustrates their basic structures. Q: After an adaptive defense is produced against a pathogen, typically plasma cells first secrete immunoglobin, which constitutes about ten percent of all what? Choices: - parasites - hormones - allergies - antibodies A:
Ans: antibodies
(Q).
Answer the following question given this paragraph: Q: What are double sugars called? Choices: - monosaccharides - sodiums - silicates - disaccharides A:
(A).
disaccharides
Ques:Answer the following question given this paragraph: Enzymes are involved in most of the chemical reactions that take place in organisms. About 4,000 such reactions are known to be catalyzed by enzymes, but the number may be even higher. In animals, an important function of enzymes is to help digest food. Digestive enzymes speed up reactions that break down large molecules of carbohydrates, proteins, and fats into smaller molecules the body can use. Without digestive enzymes, animals would not be able to break down food molecules quickly enough to provide the energy and nutrients they need to survive. Q: What substances are involved in most of the chemical reactions that take place in organisms, including digestion? Choices: - proteins - hormones - vitamins - enzymes A:

Ans:enzymes
Ques:Answer the following question given this paragraph: Over time, deposited sediments may harden into rock. First, the sediments are compacted . That is, they are squeezed together by the weight of sediments on top of them. Next, the sediments are cemented together. Minerals fill in the spaces between the loose sediment particles. These cementing minerals come from the water that moves through the sediments. Sedimentary rocks that form from sediments are called "clastic rocks. " Clastic rocks are rock fragments that are compacted and cemented together ( Figure below ). Q: Over time, deposited sediments may harden into what? Choices: - coral - fossils - deltas - rocks A:

Ans:
rocks