Most human cell contains....... chromosomes:
a. 23
b. 46
c. 20
d. 100 trillions
Ans: b. 46
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Which relationship is MOST likely to be observed between species of different classes?
A) A deltaproteobacterium oxidizes hydrogen sulfide into sulfate, which is then reduced by an epsilonproteobacterium. B) An epsilonbacterium oxidizes the hydrogen sulfide produced by a sulfur-reducing deltaproteobacterium. C) A sulfate-reducing epsilonbacterium produces sulfite, which a deltaproteobacterium reduces to hydrogen sulfide. D) Syntrophic metabolism of sulfur by a deltaproteobacterium and an epsilonproteobacterium occurs.
Cold is preferred for storing food because it retards microbial growth by slowing down metabolic processes
Indicate whether the statement is true or false
What is the effect of surrounding a gene with insulators?
What will be an ideal response?
What role does Cas9 play in CRISPR?
A) It leads RNA to the target gene to be sliced. B) It creates a copy of the target gene. C) It creates a clone of the target bacterium. D) It cuts the target gene in a specific location. E) It leads researchers to the gene of interest