Which of the following organelles has its own
DNA and ribosomes?
a. chloroplasts
b. rough endoplasmic reticulum
c. smooth endoplasmic reticulum
d. lysosomes
e. none of these organelles has its own DNA
and ribosomes
A
You might also like to view...
During ________, a ribosome assembles a polypeptide whose amino acid sequence is specified by the nucleotide sequence in a molecule of mRNA.
A. transcription B. translation C. replication D. posttranscriptional modification
Ribozymes are non-protein molecules with catalytic activity
Indicate whether this statement is true or false.
Each of the following is a characteristic of calmodulin except
A) It binds two calcium ions at each end of the protein. B) When activated by calcium ion binding, it wraps around proteins that have calmodulin binding sites. C) It can activate specific kinases and phosphatases. D) It has a very high affinity for calcium ions, and binds calcium ions irreversibly. E) All are characteristics of calmodulin.
Which of the following cellular processes is coupled with the hydrolysis of ATP?
A. Facilitated diffusion B. Active transport C. Chemiosmosis D. Osmosis E. Na+ influx into a nerve cell