Please, help with the answer and explain it: When observing a bacterial cell, a scientist observed a chain forming attached to a ribosome. The chain absorbed a stain that was specific for amino acids, The chain that was forming was completely linear, representing which level of protein structure? protein? A) primary B) secondary C) tertiary D) quaternary

Exocytosis is the last step of secretion of proteins from the cell. There are two broad types of exocytosis. a) Name the two types of exocytosis b) Describe each type of exocytosis (i.e. how are they different from each other?) c) Give at least one example of each type of exocytosis.

In both Prokaryotes and Eukaryotes, which of the following structures can cross cell membranes using the same protein channels as water? A) mRNA, B) triglycerides, C) large, non-polar molecules, D) DNA, E) gases (CO2 and O2) and small ions.

Many eukaryote cells are NOT able to synthesize (make their own) the amino acids that they require to conduct life processes. When such a cell is placed in an aqueous (water) solution containing the 20 essential amino acids, one would expect that a) nothing would happen. b) amino acids would be moved into the cell by specific membrane transport proteins.  c) H2O would dissolve in the membrane. d) the cell would make Glucose into amino acids. e) the cell would divide.

In both Prokaryotes and Eukaryotes, which of the following structures can cross cell membranes using the same protein channels as water? A) mRNA, B) triglycerides, C) large, non-polar molecules, D) DNA, E) gases (CO2 and O2) and small ions.

Why does microbial polypeptide need to fold into a 3D protein in order to become functional? Explain in 1-2 sentences. Edit View Insert Format Tools Table

In a lysosomal storage disease, newly synthesized lysosome hydrolases are secreted from the cells rather than being delivered to the lysosomes. From the list below, what is the most likely reason? Please EXPLAIN. a) The cis-Golgi network lacks a proton gradient b) The ER is unable to produce lysosomal vesicles c) Lysosomal enzymes are not phosphorylated in the rER d) Mannose is not phosphorylated in the cis-Goligi network e) All the hydrolase genes are mutated, resulting in synthesis by ribosomes free in the cytoplasm rather than on the endoplasmic reticulum membrane Give typing answer with explanation and conclusion

SDS gel electrophoresis can be used to determine a.) The molecular mass of denatured protein subunits b.) Whether subunits in a protein complex have the identical sequence   c.) The molecular mass of a native protein complex   d.) The overall charge on a polypeptide

The hydrophobic interior of the cell membrane is created by O O a) peripheral proteins b) phospholipids heads c) integral proteins d) glycoproteins e) phospholipids tails

6.