What parts of the transformation procedure are done to increase the competence of the bacterial cells?
a. treatment with calcium
b. brief heat shock
c. Using a microcentrifuge
d. Adding LB to the tube
Answer:
a. treatment with calcium
b. brief heat shock
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Which type of virus is most likely to be released by lysis of the host cell?
A. Enveloped virus B. Non-enveloped virus
Answer the following statements true (T) or false (F)
1. Myosin is a motor protein that walks along intermediate filaments. 2. The flagellum is composed of a 9 + 2 arrangement of microtubules called the axoneme. 3. The Golgi apparatus is much like a warehouse; it processes proteins and sorts them for delivery to certain parts of the cell. 4. Materials move in and out of the nucleus via endocytosis and exocytosis. 5. Both lysosomes and peroxisomes are important for detoxifying substances in the cell.
After Noller and colleagues performed the fragment reaction, which of the following treatments did
not allow transfer of the met* to puromycin?
a. no treatment b. removing proteins c. digesting proteins d. removing rRNA e. all of these allowed the transfer
A student is describing the tissue that makes up the walls of the alveoli in the lungs. It appears that these walls are composed of flattened cells arranged in a single layer to facilitate gas exchange
Which one of the following terms best describes this tissue? A) simple cuboidal B) stratified squamous C) simple squamous D) simple columnar E) stratified cuboidal