Prokaryotic and eukaryotic cells generally have which of the following features in common?
A. A membrane bound nucleus
B. a cell wall made of cellulose
C. Ribosomes
D. Flagella or Cilia that contain microtubules
E. linear chromosomes made of DNA and protein
Ans: C. Ribosomes
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Of the following sequences, which shows the correct molecules through which electrons flow when delivered to the electron transport system by NADH?
A) complex I, cytochrome c, complex III, coenzyme Q, complex IV, oxygen B) complex I, coenzyme Q, complex III, complex IV, oxygen C) complex I, coenzyme Q, complex IV, cytochrome c, oxygen D) complex I, coenzyme Q, complex III, cytochrome c, complex IV, oxygen E) complex II, coenzyme Q, complex III, complex IV, oxygen
In the experiment with Peacock butterflies, the
working hypothesis is that a. mimicry confuses both predator and prey. b. mimicry conveys a selective advantage to the prey. c. birds are capable of learning. d. birds are agents of evolution. e. unpalatable species display distinctive wings.
Which of the following is NOT a recombinant protein isolated from bacteria?
A) Interferon B) Factor VIII C) Insulin D) Erythropoietin E) Cellulase
A bacterium has the following lac operon genes located on the chromosome: I+P?Z?Y?A+. On a plasmid, this same bacterial cell has the lac genes I?P+Z?Y+A?. Which protein products will be made from lac genes in response to the presence of lactose?
What type of protein expression (induced or constitutive) will there be for each protein that is made? What will be an ideal response?