Question 20 (1 point) It contains digestive enzymes and plays an important role in dissolving large food molecules, worn out cellular components and invasive bacteria. Identify the organelle. nucleolus lysosome cytosol reticulocyte mitochondria

Question 17 Which enzyme catalyzes formation of "peptide crosslinks" in peptidolgycan? O peptiodotransglycase aminoacyl transferase bacterial transpeptidase ribozymes

Question 21 Identify each characteristic as being either prokaryotic or eukaryotic. has a cell membrane [ Choose ) has membrane bound organelle | Choose ) more complex cells [Choose ) does not have DNA in nucleus | Choose ) simpler cells | Choose ) Does NOT have membrane bound organelle | Choose Animal cells | Choose ) Bacterial cell | Choose ) has cytoplasm [Choose ) > > > > >

Question 17 For each of the following samples, determine whether they would be better to view look up what these are. Human cheek cells Select] ( Select ) Earthworm | Selec Compound A chicken heart Dissecting Bacteria in yogurt SelectJ

Question 32 The temperature at which a lipid bilayer shifts from a fluid state to a crystalline gel is called the O gelation temperature transition temperature transition series temperature optimum

QUESTION 48 In facilitated diffusion, the diffusion rate of a specific molecule across a membrane does not continue to increase as the molecule's concentration difference across the membrane increases beyond a certain point. The reason is that O a. facilitated diffusion requires the use of ATP. O b. as the concentration difference increases, molecules interfere with one another. O c. the carrier proteins become saturated. O d. the transport protein is a channel protein. O e. the diffusion constant depends on the concentration difference.