C & Seoure hMtps/myclass.kckc.edu/webapp/sessment/aaunchjsplcourse, aessment id-
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C & Seoure hMtps/myclass.kckc.edu/webapp/sessment/aaunchjsplcourse, aessment id- 07531,1coune ida 23126, Tcontent id 964316,18steu QUESTION 6 111 ane anoms of the same ekement that have different numbers of neutrors QUESTION 7 There are tour elements that make up the buik of lving cells which one of these is NOT one of those four elements? 0 Caloum Oxygen O Carbon 0 Hydrogen QUESTION B The molecuter orbital and each shares par of electroms constmuies a l11 that hokds the o logether QUESTION Proteins, nucles acs, and carbohyorates are all made up of smater repeating units wth a detined structure Lipis ane diferent Inslead of being defined by a chemical structure, tney share a partioute property Lipids are al 11 The bases or ruosc ach Rom spEn purne so pymidne rs mat are said to becorplerentary where adenre part um enosne and guarine pan wen ny ne TrueExplanation / Answer
ANSWER 6: Isotopes
Reason- Because Isotopes are the elements that differ in their mass number due to a difference in the number of neutrons in their nucleus.
ANSWER 7: Calcium
Reason- Because the 4 major elements in the human body are oxygen.carbon, hydrogen, and nitrogen. Nitrogen is needed for the amino acids. These 4 major elements do not include calcium.
ANSWER 8: Covalent molecular bond
Reason- Because the electrons and the orbitals are shared only in the covalent bond. The other type of bond is the electrovalent bond in which the electrons get transferred. Hence, the covalent molecular bond holds the shared atoms and the orbitals of the elements together.
ANSWER 9:Non-polar and the hydrophobic property
Reason- All the lipids share a common property of being non-polar. Due to lack of this polarity, all the lipids are insoluble in water. This makes them hydrophobic in nature.
ANSWER 10: False
Reason- This statement is false because of the fact that adenine pairs with thymine with a double bond and the guanine pairs with cytosine with a triple bond.
ANSWER 11: D- Polar covalent bond
Reason- Because the polar covalent bond thus formed due to unequal sharing of electrons, gives rise to a polarity and the charge difference when this kind of bond is formed.
ANSWER 12: Hydrophilic, hydrophobic
Reason- This is because the hydrophilic molecules dissolve in water due to polarity whereas the non-polar nature of hydrophobic molecules makes them insoluble in water. Thus the hydrophilic molecules water-loving and the hydrophobic molecules are water-fearing.
ANSWER 13: Electrovalent ionic bond
Reason- Because this kind of bond is formed due transfer of extra electrons from a more electronegative atom to the less electronegative atoms to make both the atoms stable.
ANSWER 14: D 2
Reason- Because the maximum number of electrons any orbital which is a constituent of a subshell can accommodate only 2 electrons; each with an opposite spin.
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