What are exteins and inteins?
What will be an ideal response?
Ans: Some proteins are capable of autocatalytic splicing, where a section of the protein is removed posttranslationally by the protein itself. Removed sections are called inteins, while remaining sections are called exteins.
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If you could stick a microscopic pin into the
center of a bacterium, what would the order of the structures you would encounter from the outside in?
a. capsule, cell wall, plasma membrane, cytoplasm b. cell wall, capsule, plasma membrane, cytoplasm c. plasma membrane, cell wall, capsule, cytoplasm d. cell wall, plasma membrane, capsule, cytoplasm e. capsule, plasma membrane, cell wall, cytoplasm
Which of the following is not involved in muscle contraction?
1.An action potential that releases ACh at the neuromuscular junction. 2.An action potential that releases norepinephrine at the neuromuscular junction. 3.An action potential carried by T tubules. 4.Opening of voltage gated channels in the sarcoplasmic reticulum.
The introduction of a novel organism into an ecosystem can lead to the extinction of species
Indicate whether the statement is true or false
The shaggy-mane mushroom lives beneath broadleaf forest trees and aids in decomposition of forest litter. You have just learned something about what specific type of ecological information concerning this fungus?
A) the biosphere B) the population dynamics C) the niche D) the phosphorus cycle