1.2 Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1-1.2.6) in the ANSWER BOOK. 1.2.1 The reagent used to test for the presence of starch 12.2 The green, light-trapping pigment in photosynthesis found in plant leaves. 1.2.3 The group of animals that feed only on plants material. Flat and uneven teeth used for grinding and crushing food. animals 1.2.4 1.2.5 A hollow muscular tube that connects the pharynx to the stomach 1.2.6 The removal of solid wastes from the body

With the advent of photosynthesis, the amount of oxygen in the atmosphere has varied over the eons up to 35 % by volume, theoretically leading to larger plants and animals. The current concentration is 21 % oxygen, 78 % nitrogen, and 1 % other gases such as argon and carbon dioxide. Assuming an atmosphere of 16 % oxygen, to the nearest whole number (no decimal) what would be the ideal volume of water (in mL) initially placed in a 25 mL graduated cylinder (assuming the graduation goes up to the lip of the container) for optimal combustion (biggest explosion) if we collected pure hydrogen by displacement as in this experiment? Make sure to account for the stoichiometry of the combustion, that all gases involved are diatomic, and that equal moles of different ideal gases occupy equal volumes at the same temperature. Answer:

Answer questions 7 through 18.

Answer this Complete Question (Conisdered by School Systems only counts as one Question made up of each numebr being atcually a letter (1=a,etc.).

Name the essential element involved in each process: changes the osmotic potential in guard cells as they swell or shrink, present in all nucleotides and amino acids, carries electrons in chlorophyll, present in cytochromes, present in plastocyanins, involved in nitrogen metabolism, present in the water-splitting enzyme of photosystem II, present in ATP, present in the middle lamella, and important in regulating the activity of many enzymes.

Extremophiles are microorganisms that can survive and proliferate in extreme environments. One group of such microorganisms are lithotrophs. These are found deep beneath the Earth's surface, living on rocks under anaerobic conditions and surviving on CO2 as their sole source of carbon. Imagine that you are studying a newly discovered lithotroph and are trying to determine what it uses as a source of electrons for reducing CO2 and for producing energy. Which one of the following conditions must be met for a molecule to serve as a useful electron donor? Oxidation of the molecule occurs with a decrease in free energy. Oxidation of the molecule occurs with an increase in free energy. Reduction of the molecule occurs with a decrease in free energy. O Reduction of the molecule occurs with an increase in free energy.

11.3 a). What is the unit used for measuring ozone layers? b). What is the wavelength range of the UV radiation? c). How is ozone different from oxygen? d). When CFCs are exposed to UV or sun light, what species are produced? e). What is the role of chlorine radical in the ozone formation or reactions. f). What in the polar zone makes the depletion of ozone more serious?

For questions 4 and 5 just say which kind they are (photoautotroph, chemoautotroph, photoheterotroph, or chemoheterotroph)

What marine life forms are affected by aspergillosis caused by Aspergillus sydowii? a. Sea turtles () b. Sea fans )c. Sea anemones d. Sea slugs   16. Identify the single most correct choice: (a) Enzymes can operate at low temperatures.  b) pH may change the rate of an enzyme's activity. c) Enzymes can lower the activation energy of reactions and they (enzymes) are produced by the living cells. d) All of the above.

______________ require ______________ and ______________, to perform ______________.   Question 1 options:   Photoautotrophs, water (H2O), carbon dioxide (CO2), photosynthesis   Cordatatrophs, potassium superoxide (KO2), water (H2O), chemosynthesis   Hemitrophs, iron oxide (Fe2O3), water (H2O), chemosynthesis   None of the other answers are correct.   Herterotrophs, carbon dioxide (CO2), water (H2O), photosynthesis   Simiautotrophs, nitrous oxide (N2O), hydrogen peroxide (H2O2), nucleosynthesis