The correct answer is secondary structure of proteins is formed by the hydrogen bonding between amino acid chains.
Explanation:
The secondary structure of protein is generally stabilized by peptides bond along with hydrogen bonding between hydrogen atom and an electronegative atom such as oxygen.
The secondary structure both alpha helix and beta pleated sheet are stabilized by hydrogen bonding beside the presence of peptide bonds.
CREDIT: Pandeyarindam296
The answers are;
The muscular contractions are wave-like
The muscular contractions are entirely involuntary
This action is called peristalsis.
It is powered by the expansion and contraction of the smooth muscles present in the esophagus. It is controlled by the sympathetic activity of the autonomic nervous system hence
the movements are involuntary.
Urbach-Wiethe disease is a rare genetic disorder that can cause calcification of brain tissue in the temporal lobes; this calcification can cause damage to the amygdalae.
<h3>What are the symptoms of Urbach-Wiethe disease?</h3>
The symptoms of the disease vary greatly from individual to individual.
They may include a hoarse voice, lesions and scarring on the skin, easily damaged skin with poor wound healing, dry, wrinkly skin, and beading of the papules around the eyelids.
<h3>What part of the brain does Urbach-Wiethe disease affect?</h3>
(1994, 1995) investigated a patient suffering from Urbach–Wiethe (UW) syndrome, a very rare autosomal recessive disease, which produces bilateral calcifications in the anterior medial temporal lobes, especially of the amygdalae, in 50–75% of cases (Newton et al., 1971; Staut and Naidich, 1998).
Learn more about Urbach-Wiethe disease here:
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brainly.com/question/7224949</h3><h3 /><h3>#SPJ4</h3>
Skunks are a rather interesting and well known animal. Skunks when concerned by prospective predators sprays a substance with a foul odor from it rear glands. This is a example of chemical warfare on the part of the skunk.
In over the past 50 years fishing industry in north american needed to improve their equipment fishing and boats to enhance their production.
the greatest impact on the fishing industry in north america is: a. improvement and modernization of boats and fishing equipment.
hope this help
