Answer:
by the sarcoplasmic reticulum's calcium ion pumps
Explanation:
Rigor mortis or postmortem rigidity, is a state caused by chemical changes in the muscles that occur post mortem and cause the limbs of the corpse to stiffen.
This occurs because after death, there is no cellular respiration and consequently, no oxygen nor ATP (ATP is required for the muscle relaxation).
Calcium enters the cytosol after death because it is released due to the deterioration of the sarcoplasmic reticulum and due to the breakdown of the sarcolemma. Ca2+ ions activate the formation of actin-myosin cross-bridging necessary for the contraction. Muscles are unable to relax, because myosin heads continue to bind with the active sites of actin and there is no ATP to destabilize the myosin-actin bond.
<u>Complete Question:</u>
Which statements describe proteins? Check all that apply.
A.) Proteins are created from the code in DNA.
B.) Proteins are synthesized in the nucleus of a cell.
C.) DNA and RNA are proteins.
D.) Amino acids are the building blocks of proteins.
E.) Proteins affect the structures and functions of living things.
F.) The shape and the function of a protein are not related.
<u>Correct Option:</u>
The statements which describe proteins are as follows:
A.) Proteins are created from the code in DNA.
D.) Amino acids are the building blocks of proteins.
E.) Proteins affect the structures and functions of living things.
<u>Explanation:</u>
Transcription is the method of RNA molecule creation from DNA. The translation is the mechanism by which the protein material is produced from the RNA molecule. Originally, protein forming data is contained in the DNA in the context of nucleotide code. The mechanism of translation happens in the cytoplasm and not at the nucleus.
DNA and RNA contain nucleotides and not proteins. Proteins are the alpha amino acid polymers, which serve as the building block of the protein. An individual's phenotype relies on the composition of the protein, and protein determines the composition and phenotypic expression in living organisms. 3D structure of proteins and their work are realized with one another.
The raw materials of H2O and CO2 are located there
Answer:
grass deer wolf grizzly bear
430
Explanation: when calculating this you repeatingly divide by 10. If you going the other way you multiply by 10.
