Answer:
secondary structure
Explanation:
Alpha helices and beta sheets are two main structural forms in secondary structure of proteins. This structures are formed spontaneously. The next step of protein structure formation is folding into tertiary three-dimensional form.
In diseases such as CJD and kuru, protein prion is changed in structure. It is not known how degeneration of priones protein structure occurs, but it can lead to neurodegenerative diseases which can even be fatal.
Priones are also known as proteinaceous infectious particles.
The answer is True.
Among other biological component of the earth's system, Biosphere includes all the living organisms such as plants and animals. Other component such as lithosphere, atmosphere,hydrosphere, and all other spheres of the earth's biological system does not contain life forms.
Reabsorption of filtered glucose from the lumen in the pct is largely by means of: secondary active cotransport.
Nephron is the functional unit of the kidney associated with removing waste products from the blood. It achieves the function by performing filtration which results in formation of urine. A nephron is divided into two parts namely renal corpuscle and renal tubule. Renal corpuscle is associated with filtration and renal tubule mainly performs reabsorption.
Renal tubules are further divided into Proximal Convoluted Tubule (PCT), loop of Henle, Distal Convoluted Tubule (DCT) and collecting duct. PCT and DCT are mainly linked with reabsorption and secretion respectively. Reabsorption in PCT occurs via cotransport. Here, glucose is reabsorbed along with sodium ions via SGLT2 cotransporter. Specifically, the reabsorption method is termed as sodium-coupled secondary active transport.
Learn more about filtration and rebasorption here -
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True.An operon is a prokaryote. Its is a group of genes working together to make a specific protein.
Answer:
Gases that lead to air pollution include carbon, nitrogen and sulfur oxides. Explanation:
