The molecule Q moves through the non-polar portion of the inner membrane of mitochondria.  Based solely on this observation which of the following would apply? a. It is associated with motor proteins. b. None of the other answers are correct. c. It is a primarily polar molecule. d. It is a lipid insoluble molecule.

Transmembrane proteins span the width of the cell membranes. Four types of transmembrane proteins are shown in a section of cell membrane.    Although these proteins have different specific functions, they all --  a. help the cell interact with its external environment b. stop chemical reactions within the cell c. synthesize molecules that signal other cells d. remove large waste particles from the cytoplasm of the cell.

Production of ATP can occur when creatine kinase takes a phosphate from _______________ and phosphorylates ADP into ATP.  This process is known as ________________ and generates _____ ATP each time this process occurs.     A. creatine phosphate; direct phosphorylation; 1     B. creatine; ATP hydrolysis; 1     C. creatine phosphate; direct phosphorylation; 32     D. creatine phosphate; ATP hydrolysis; 32     E. creatine; direct phosphorylation; 2

What is the function of the structure indicated by the arrow? CHD Answers A -E A ATP production B Glycosylation of proteins C Production of MRNA Production of ribosomal RNA Translation of MRNA into proteins

Select the correct pairing of a structure and the process it is associated with.    A. Schwann cells……..muscle contraction  B. ATP synthase…..electron transport chain  C. H+ pump……facilitated diffusion  D. Mitochondria…..protein synthesis

Which of the following organelles and molecular complexes carries out catabolic reactions as one of its main functions?   a. ribosomes   b. rough endoplasmic reticulum   c. chloroplasts   d. Golgi complex   e. lysosomes

Which structure within the cell produces ATP (adenosine triphosphate)? A. the mitochondria B. the nucleus C. peripheral proteins D. the endoplasmic reticulum

Na+ moves from high to low concentration, across the plasma membrane, through a protein channel that is permenantly open. Which statement is true about this process? a. It does not require ATP b. It is a form of active transport  c. Movement is against the concentration gradient of Na+ d. The channel probably allows many different molecules and ions to cross

Where in the cell is an N-linked glycan added onto a protein? A.In the nucleus. B.In the cytoplasm.C.The the lumen of the ER.D.In the lumen of the cis-Golgi.E.On the extracellular side of the plasma membrane.

Which of the following is incorrect about the collagen structure? a. The covalent cross-links between the individual chains stabilize the collagen structure b. None; all the other choices are correct The helical structure is cross-linked (with covalent bonds) at both ends Od. Gly residues are all located in the center of the helix (i.e. between the individual chains) C.