48) Identify the primary process that featured in the preceding : 1200441.
48) Identify the primary process that is featured in the preceding image.
A) receptor-mediated endocytosis
B) pinocytosis
C) sodium-potassium exchange
D) phagocytosis
E) facilitated diffusion
49) Using the preceding image, determine the correct sequence of events in the primary process, which begins when target molecules (ligands) bind to receptors in the plasma membrane.
1. Ligands are removed and absorbed into the cytoplasm.
2. The membrane containing the receptor molecules detaches from the lysosome.
3. Pockets pinch off, forming coated vesicles.
4. Areas coated with ligands form deep pockets in the membrane surface.
5. The vesicle fuses with the plasma membrane.
6. Coated vesicles fuse with lysosomes.
A) 4, 6, 1, 2, 3, 5
B) 4, 1, 3, 6, 5, 2
C) 4, 3, 6, 1, 2, 5
D) 1, 2, 4, 3, 6, 5
E) 1, 4, 3, 2, 5, 6
50) Which of the following is an example of membranous organelles?
A) lysosomes
B) cilia
C) centrioles
D) ribosomes
E) cytoskeleton
51) The primary components of the cytoskeleton are
A) microfilaments.
B) microtubules.
C) intermediate filaments.
D) phospholipids.
E) actin molecules.
52) Which of the following are long, slender extensions of the plasma membrane?
A) microfilaments
B) cilia
C) thick filaments
D) microtubules
E) centrioles
53) The folds of the internal membrane within mitochondria are called
A) cristae.
B) cytosol.
C) cisternae.
D) matrix.
E) histones.
54) Protein production is a function of the
A) microtubules.
B) mitochondria.
C) rough ER.
D) ribosomes.
E) Golgi apparatus.
55) Which of the following consists of a network of flattened membranous disks?
A) rough ER
B) smooth ER
C) mitochondria
D) nucleoli
E) Golgi apparatus
56) The peroxisome
A) produces proteins.
B) is responsible for the formation of microtubules.
C) functions in macromolecular biosynthesis.
D) breaks down fatty acids and other organic compounds.
E) is responsible for cellular transport through the Golgi apparatus.
57) Paired structures made of microtubules that are perpendicular to each other are called the ________.
A) chromosomes
B) ligand receptors
C) centromeres
D) nucleoli
E) centrioles
48) Identify the primary process that featured in the preceding : 1200441
