General Biology Test Chapters 1-5 Questions And Answers

What are the 3 parts of an atom? - Answer-Electron, Proton, and Neutron What a molecule shares electrons unevenly, it is called - Answer-Polar What is the max number of electrons the orbital closest to the nucleus can hold? - Answer-2 electrons What are the 3 elements found in 98% of all living things? - Answer-Hydrogen, Nitrogen, and Carbon What type of bond is formed when atoms gain or lose electrons achieve a completed outer shell - Answer-Ionic bond If the number of Neutrons in an atom differ from the number of protons, what is true? - Answer-Its an isotope and the atomic mass changes. If the number of Electrons in an atom differ from the number of protons, what is true? - Answer-The atom becomes charged and the atomic mass stays the same. The shape of a molecule is... - Answer-Dependent on the angle of bonds between its atoms and influences its biological function. Carbon has 6 protons; what can you interpret about its atomic structure? - Answer-It will have 2 electrons in the innermost shell. What is true about a molecule that has been oxidized? - Answer-The molecule lost an electron The pH of blood in a healthy human is 7.4. This is.. - Answer-Slightly basic.What 3 things are true about buffers? - Answer-Example on how the body maintains homeostasis, They resist changes in pH by absorbing hydrogen ions when acids are added, and they also resist changes in pH by releasing hydrogen ions when bases are added. Out of the 4 options, which would have the greatest concentration of hydrogen ions? - Answer-Lemon Juice. Describe hydrogen bonds. - Answer-They are indicated by dotted lines between molecules and are weak and transient. Where is the majority of energy in carbohydrates stored? - Answer-in C-H bonds. What domain includes oak trees? - Answer-Eukarya What does the call theory state? - Answer-All living things are made of cells