Which of the following conclusions about the radiolabeled amino acid is best supported by the results of the experiment?
It was mostly incorporated into proteins that regulate and manage metabolic reactions.
Which of the following best predicts what will happen to the lysosomal enzymes if the proteins that transport H+ ions from the cytosol into the lysosome are damaged ??
Which of the following best predicts what will happen to the lysosomal enzymes if the proteins that transport H+ ions from the cytosol into the lysosome are damaged?
The lysosomal enzymes will not become active, since there will be no active transport of H+ ions
.
Which of the following results one hour after membrane fusion best supports the alternative hypothesis that the cell membrane is a fluid mosaic?
Which of the following results, one hour after membrane fusion, best supports the alternative hypothesis that the cell membrane is a fluid mosaic?
The membrane proteins from each cell have mixed and drifted within the bilayer
, which supports the fluid mosaic model of cell membranes.
Which of the following claims about the origin of the Euglena chloroplast is best supported by the three membrane structure of the envelope?
Which of the following claims about the origin of the euglena chloroplast is best supported by the three-membrane structure of the envelope? It
originated from the incorporation of a photosynthetic prokaryote into a eukaryotic cell by two endosymbiotic events
.
Which of the following outcomes will most likely result from a change in the shape?
Which of the following outcomes will most likely result from a change in the shape of the mitochondrial inner membrane from a highly folded surface to a smooth, flat surface?
Mitochondria will become less efficient
because the surface area of the inner mitochondrial membranes will decrease.
Which of the following best explains the advantage These projections provide the cell?
Which of the following best explains the advantages of these projections provide the cell?
The projections increase the surface area-to-volume ratio of the cell which allows for more efficient nutrient exchange with the environment
.
Which of the following indicates where testosterone enters a cell and why it is able to cross at that point?
Which of the following indicates where testosterone enters a cell and why it is able to cross at that point?
because testosterone is nonpolar and can diffuse through the membrane
. … Therefore, testosterone can cross the hydrophobic inner region of the phospholipid bilayer.
What statement best describes the cell after 20 minutes?
What statement best describes the cell after 20 minutes?
Water will move from the cell into the beaker, resulting in a smaller cell. Water will move from the beaker into the cell, resulting in a larger cell. Salt will move from the cell into the beaker, resulting in a smaller cell.
Why is the chicken egg best represents the cell in performing the cell transport mechanism?
The membrane of a chicken egg has many similarities to the membrane surrounding animal cells. … This means that
the cell did not use any energy to move things through the membrane
. Another way living cells can move things through the membrane is active transport.
What is the name of the process that will move molecules into the cell?
It is possible for large molecules to enter a cell by a process called
endocytosis
, where a small piece of the cell membrane wraps around the particle and is brought into the cell. If the particle is solid, endocytosis is also called phagocytosis. If fluid droplets are taken in, the processes is called pinocytosis.
Do Thylakoids have double membranes?
Plant chloroplasts are large organelles (5 to 10 μm long) that, like mitochondria, are bounded by a
double membrane
called the chloroplast envelope (Figure 10.13). … The thylakoid membrane forms a network of flattened discs called thylakoids, which are frequently arranged in stacks called grana.
Does Nucleus have double membrane?
The nucleus contains all of the genetic material for a eukaryotic cell, but this genetic material needs to be protected. And it’s protected by the
nuclear membrane
, which is a double membrane that encloses all the nuclear genetic material and all the other components of the nucleus.
Why do plastids have a double membrane?
Double-Membrane (Envelope Membrane)
Due
to genome reduction of plastids
, particularly in the cells, plastids are only able to encode for a small number of proteins. As a result, they are highly dependent on the proteins encoded by the cell nucleus.
What is the most likely explanation for the change in slope of the line between 3 and 5 minutes?
what is the most likely explanation for the change in the slope of the line between 3 and 5 minutes?
the hydrolysis of sucrose to glucose and fructose is exergonic
.
Which of the following best describes the function of the double membrane system?
Which of the following best describes the function of the double membrane system of this organelle?
The inner membrane has specialized proteins that create
a hydrogen ion concentration gradient between the intermembrane space and the matrix. … The cells do not produce functional motor proteins in flagella and cilia.
Which statement best explains why correct protein folding?
Which statement best explains why correct protein folding is critical in the transmembrane protein shown above?
Interactions of the hydrophobic and hydrophilic amino acids help to anchor the protein in the membrane.
