Answer:The above statement is "false".
Explanation:
The following events take place during contraction-relaxation of a muscle:
•Action potential in T tubule activates voltage-sensitive receptors,which in turn trigger Ca ions release from terminal cisternae of sacroplasmic reticulum(SR) into cystol.
•Ca ions bind to troponin;troponin changes shape,removing the blocking action of tropomyosin;actin active sites is exposed.
•CONTRACTION; myosin heads alternatively attach to actin and detach,pulling the actin filaments toward the center of the sarcomere;using ATP in this process.
•removal of Ca ions by active transport into the SR after the action potential ends.
•RELAXATION occurs.Actin and myosin return back to its unbound state.
The answer is B hope it helps pls mark branliest
Answer:
1.
the process of cell modification from a generalized cell to one that performs a specific task
gene expression
2.
this is the molecule, unique to each individual, carrying the genetic information to be found in every cell
3.
a segment of DNA that directs the development of some inherited traits
gene expression
4.
the process of the cell implementing the instructions of a gene
gene expression
5.
messenger RNA; a linear RNA molecule that contains codons
mRNA
Answer:
to preserve its stability.
to avoid cross contamination.
Explanation:
Biological evidence refers to all biological materials such as hair, tissue, bones, teeth, blood or other bodily fluids etc. These biological materials are collected from the site of crime. These evidences helps in finding the criminals. These biological evidences has to be kept at safe place in order to avoid contamination and preserve its stability so it can be used for solving the problem.
