FPLD 2 Flashcards
Cells being able to carry out their function depend on: (chose all that are correct)
A. The interaction and correct formation of different types of chemical bonds
B. The interaction of two human bodies
C. A large number of cells being present in a particular organ
D. The shape between two (or more) molecules matching up like jig-saw puzzle pieces (shape-complementarity)
A and D
Which of the following are examples of what cells do when they do biochemistry? (Select all that are correct)
A. They sense and respond to their environment to ensure they carry out the right type of reactions, at the right time and to the right level/degree
B. Break molecules that are not needed or needed to be converted to another molecules and make new molecules either from scratch or from another molecule
C. Break down energy from food sources, store it in a form that the body can use and use it when needed
D. They maintain themselves by dividing (cell division) and ensuring that the new cells grow to their full size.
A, B, C and D
Why are non-covalent interactions very important for cellular function and for biochemical reactions?
A. They provide strong bonds and therefore stabilise chemical interactions
B. Non-covalent bonds are only found in the active site of enzymes and are therefore specialised in catalysing chemical reaction within cells
C. They are weak chemical bonds which allow bonds within and between molecules to be broken more easily, therefore facilitating chemical reactions
D. They are strong bonds that can never be broken and therefore lock proteins in into certain configurations and activities
C
Why is it important to determine and understand the structure of a protein?
A. Because proteins are beautiful and protein biochemists love looking at them.
B. Because the structure of a protein determined its function.
C. Because then scientists can figure out the DNA sequence of the gene that gave rise to that protein.
D. Because knowing the size and shape of a protein allows us to isolate it.
B
