1. Which statement below correctly describes why ATP is a high energy A. ATP con
ID: 147147 • Letter: 1
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1. Which statement below correctly describes why ATP is a high energy A. ATP contains 2 phosphate bonds that contain high levels of B. ATP contains hydro-carbon chains that hold energy C. ATP is composed of thymine which is a high energy molecu D. The last two phosphate bonds are unstable and easily E. The first phosphate bond is unstable and easily broken 2. Living organisms are characterized by A. adapting to the environment B. evolving over time. C. displaying homeostatic controls D. all of the choices pertain to living organisms 3. Organisms belonging to the samewou be the most closely related. A. kingdom B. phylum C. family D. class E. order 4. If the atomic number of an element is 80 and the atomic mass is 200, how many neutorns are there in the nucleus? A. 80 B. 200 C. 120 D. None of the above 5. In a water molecule, A. the oxygen atom is more electronegative than the hydrogen atoms. B. the oxygen atom has an overall negative charge with the hydrogen atoms having an overall positive charge. C. unequal sharing of electrons results in a polar molecule. D. All of the choices are correct.. 6. A valence shell is best described as A. the electron shell closest to the nucleus. B. the outermost electron shell of an atom. C. the volume of space in which electrons are most often found. D. the original energy level of electrons in photosynthesis. 7. Which of the following statements is NOT true about electron configurations? A. If an atom has only one shell, it is complete with two electrons. B. If an atom has two or more shells, the octet rule applies. C. If an atom has two or more shells, the outer shell is complete with eight electrons. D. Atoms with more than eight electrons in the outer shell react by gaining electronsExplanation / Answer
1,A
ATP contains two phosphate bonds that contains high level of energy. During a process called hydrolysis .one phosphate group from ATP is removed and energy is released ,forming ADP . again energy is released by breaking phosphate bond in ADP . the breaking of two high energy phosphate bond releases energy .
2- D
All are characteristics of living organisms .All organisms will adapt with their environment by altering structural and metabolic properties . Also they evolve over time .
3-C
Order of taxonomic ranks are species, genus,family, order,class, phylum, kingdom . in which family contain related genus which share similar traits.
4-c
As atomic number denotes the number of protons and atomic mass denotes total number of neutrons and protons , number of neutrons equals to 200-80
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