Receptor-mediated endocytosis brings in specific material by engulfing it in vesicles. What factors, either directly or indirectly, are related to this process? Choose all that apply.
_____ It is a passive process.
_____ It helps to increase membrane fluidity by helping to transport cholesterol into the cell.
_____ It is an active process.
_____ It uses carrier proteins.
_____ A clathrin coat is present.
_____ It is a passive process.
__X__ It helps to increase membrane fluidity by helping to transport cholesterol into the cell.
__X__ It is an active process.
_____ It uses carrier proteins.
__X__ A clathrin coat is present.
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The nuclear lamina is an array of filaments on the inner side of the nuclear membrane. If a method were found that could cause the lamina to fall into disarray, what would you most likely expect to be the immediate consequence?
A) the loss of all nuclear function B) the inability of the nucleus to divide during cell division C) a change in the shape of the nucleus D) failure of chromosomes to carry genetic information E) inability of the ribosomes to produce proteins
One hundred fifty one deaths have been attributed to vCJD in the United.States.
Answer the following statement true (T) or false (F)
The neuron is the basic unit of the nervous system
1.True 2.False
Lysozyme
a. is secreted by endocrine glands in the skin. b. destroys the cell wall of invading bacteria. c. is produced in the lymph nodes and actively disables bacteria. d. is a very effective defense against viruses. e. is active within the circulatory system.