The option are not given and the options are:
Proteins are denatured by breaking covalent bonds.
Linear molecules like DNA are inherently stable.
Individual hydrogen bonds may be weak, but DNA structure is stabilized by many thousands or millions of these bonds - far more than found in proteins.
The statement is incorrect; it actually takes far more energy to denature proteins than it does to denature DNA.
Answer:
The correct answer is- Individual hydrogen bonds may be weak, but DNA structure is stabilized by many thousands or millions of these bonds - far more than found in proteins.
Explanation:
Proteins become denatured when it looses its three-dimensional structure. Disulfide bond and hydrogen helps in stabilizing the three-dimensional structure of proteins and if these bonds break due to any factor protein lost its structure and function.
DNA is made up of a large amount of hydrogen bond because in AT base-pairing two hydrogen bonds are required and in GC base pairing three hydrogen bonds are required. Therefore it can be concluded that as more hydrogen bonds stabilizes DNA than protein its melting temperature is higher than protein.
I think that the answer is global warming
Answer:
The five spheres of Earth are the geosphere, hydrosphere, atmosphere, cryosphere, biospheres.
The ocean is one environment that is comprised of both the hydrosphere and biosphere. The ocean, being nothing but water, serves as the whole known world to all marine life within, which serves as the biosphere component.
Mountainous environments are also made up of multiple spheres; including, but not limited to, cryosphere, geosphere, with a little bit of biosphere as well. Mountains--which are giant rock formations created by years of seismic activity--are mostly covered in snow near the peaks due to low temperature, which will melt at different points during the year. A small assortment of wildlife call these areas home, such as jackrabbits, white-tailed deer, mountain goat, bear, gray wolf, coyote, lynx, and wolverine.
Answer:
The correct answer will be option A.
Explanation:
The atrioventricular valve is one of the four valves present in the heart the function of which is to stop the back flow of the blood from the ventricles to the atrium.
These valve opens and closes in response to the change in the pressure of the blood in atrium and ventricles. The valve opens when blood is pumped form the atrium to ventricles which causes the papillary muscles to relax while the valve closes when the ventricles push the blood to the arteries. This causes the papillary muscle to contract which causes the chordate tendineae to create tension ad close the valve.
Thus, option A is the correct answer.
