The idea of cloning animals was presented by ________ in 1938.
A. Wilmut
B. Spemann
C. Thomson
D. Varmus
Answer: B
You might also like to view...
Scientists have found that polypeptides that are normally synthesized in the endoplasmic reticulum are about 20 amino acids longer when they are synthesized by ribosomes not attached to the endoplasmic reticulum
What is a possible explanation for the greater length of these polypeptides? A) Ribosomes attached to the endoplasmic reticulum require fewer amino acids to function. B) The 20 amino acids serve as a signal (peptide) sequence that directs the forming polypeptides to the endoplasmic reticulum, where they are cleaved off during processing. C) The 20-amino-acid sequence helps the endoplasmic reticulum package these proteins for shipping to the Golgi. D) The protein has a different function in the cytosol than in the endoplasmic reticulum.
Refer to the accompanying figure with the lateral line organs of fishes. The structures indicated by label 3 are:a
hair cells. b. cupula. c. stereocilia. d. sensory neurons. e. supporting cells.
The site where the two original DNA strands separate and active replication occurs is called the
A. replisome. B. lagging strand. C. replication fork. D. sliding clamp subunit. E. primosome.
A micelle is formed of
A) hydrophobic molecules only. B) hydrophilic molecules only. C) amphipathic molecules where the hydrophobic portion faces toward the center. D) both hydrophilic and hydrophobic molecules. E) amphipathic molecules where the hydrophilic portion faces toward the center.