1. Answer;
-secondary structure;
Explanation;
Protein secondary structure refers to regular, repeated patterns of folding of the protein backbone. The two most common folding patterns are the alpha helix and the beta sheet. In an alpha helix, the polypeptide backbone coils around an imaginary helix axis in clockwise direction. In the beta sheet secondary structure, the polypeptide backbone is nearly fully extended. The R-groups are alternately pointed above and then below the extended backbone.
2. Answer;
- Quaternary structure
Explanation;
-Many proteins are formed from more than one polypeptide chain. The Quaternary structure describes the way in which the different subunits are packed together to form the overall structure of the protein. For example, the human hemoglobin molecule shown below is made of four subunits.
3. Answer;
-Tertiary structure
Explanation;
Tertiary structure refers to the overall folding of the entire polypeptide chain into a specific 3D shape. The tertiary structure of enzymes is often a compact, globular shape.
The tertiary structure is the structure at which polypeptide chains become functional. At this level, every protein has a specific three-dimensional shape and presents functional groups on its outer surface, allowing it to interact with other molecules, and giving it its unique function.
4. Answer;
Primary structure
Explanation;
-It is the simplest level of protein structure and is simply a sequence of amino acids in a polypeptide chain. For example, the hormone insulin has two polypeptide chains, A and B. Each chain has its own set of amino acids, assembled in a particular order. For instance, the sequence of the A chain starts with glycine at the N-terminus and ends with asparagine at the C-terminus, and is different from the sequence of the B chain.
Answer:
•The dodder plant is parasitic.
•The dodder plant stays alive because of the potato plant.
Explanation:
A parasite cannot survive or reproduce without its host because it depends on it. The dodder plant is parasitic to the potato plant because it derives its nutrition from the potato plant which is the host. The potato plant is denied its nutrient and therefore grows weakly below its maximum potential. The dodder plant gains while the potato plant is negatively affected- that’s parasitism relationship.
Answer: B transmitted by contact
Explanation:
Cutaneous Anthrax is spread by contact with the bacterium's spores, which often appear in infectious animal products. Contact is by breathing, eating, or through an area of broken skin. It does not typically spread directly between people. Risk factors include people who work with animals or animal products, travelers, postal workers, and military personnel.Diagnosis can be confirmed by finding antibodies or the toxin in the blood or by culture of a sample from the infected site.
Answer:
109,440 beats per day
Explanation:
75 times 60 (the amount of minutes in an hour) equals 4,560
456p times 24 (the amount of hours in a day) equals 109,440
