It´s the coalescence of many of the arteries that feed the brain.
What is the Willis polygon?
100
A zwitterions
When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3, alanine becomes...?
100
Mucous connective tissue
What type of tissue is Wharton's jelly?
100
Redundancy
The ability of several different cytokines to exert a similar activity is called...?
100
It binds to A site and stop the elongation.
How does puromycin inhibit protein synthesis?
200
Directly from the aorta.
From where does the left common carotid comes?
200
Acetyl-CoA
What is the end product of leucine metabolism?
200
Histiocyte
Which connective tissue cell is a tissue macrophage?
200
Idiotypes
Two antibodies that have the same antigenic recognition sequence are called...?
200
Double helix
The shape of a DNA molecule is..?
300
Intima, medium, and adventitious.
What are the layers of the arteries?
300
Tryptophan
What is the heaviest of the twenty amino acids?
300
White adipose tissue
Unilocular adipose tissue
What type of adipose tissue tends to increase as humans age?
300
Fc region
Which part of the IgE antibody is responsible for binding to mast cells and basophils?
300
Apoptosis
Cytochrome C releases to cytoplasm during...?
400
The cerebrum
What is the name of the biggest part of the human brain?
400
Asparagine
Aspartic acid
Glutamine
Which of the following amino acids can form hydrogen bonds with their side (R) groups?
400
Dense irregular connective tissue
What type of tissue makes up the dermis of the skin?
400
An epitope.
The part of an antigen that is recognized by the adaptive immune system is called..?
400
S phase
DNA replication takes place during?
500
The skin
What is the human body’s biggest organ?
500
Where the molecule carries no electric charge
The isoelectric point of an amino acid is defined as the pH...?
500
Myofibroblast
Which connective tissue cell type contains properties of smooth muscle cells?
500
Toll-like receptor
When the innate immune system encounters a foreign antigen, what cell-surface molecule plays the role of recognizing the presence of a foreign antigen?
500
Warren Weaver in 1938
The term "Molecular biology" was first used by...?