Answer:
Proteins are usually phosphorylated at amino acids that have hydroxyl group- containing side chains. Other statements are false. Thus, Option 2 is only true.
Explanation:
Proteins are usually phosphorylated at amino acids that have hydroxyl group- containing side chains which are Serine, Threonine and Tyrosine. Thus, the statement is true.
Phosphorylation can enhance or inhibit the activity of an enzyme but cannot activate enzymes. Therefore, the statement is false.
Phosphorylation can enhance or inhibit the activity of an enzyme but cannot activate enzymes. Thus, phosphorylation does not always decreases the activity of an enzyme.
Phosphorylation at the termini I.e., N terminus of a protein chain is relatively rare and usually involves other types of modification.
Phosphorylation of proteins is catalysed by enzymes called protein kinases. Thus, this statement is also false.
To know more about Phosphorylation,
Phosphorylation of proteins can either activate or inhibit protein function, depending on the specific context and the protein involved. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains, such as serine, threonine, and tyrosine.
Phosphorylation is a common post-translational modification of proteins, where a phosphate group is added to specific amino acid residues. It is catalyzed by enzymes called kinases, which transfer a phosphate group from ATP to the target protein. Proteins can be phosphorylated at various amino acids, including serine, threonine, and tyrosine. This modification plays a crucial role in regulating protein function and cellular processes.
Contrary to statement 1, phosphorylation does not always activate enzymes. It can have diverse effects on protein activity, stability, localization, and interactions with other molecules. Depending on the specific context and the protein involved, phosphorylation can either activate or inhibit protein function.
Statement 2 is true. Proteins are usually phosphorylated at amino acids that have hydroxyl group-containing side chains, such as serine, threonine, and tyrosine.
Statement 3 is false. Phosphorylation does not always decrease the activity of the enzyme. It can have both activating and inhibitory effects on protein function.
Statement 4 is false. Proteins are not usually phosphorylated at the N terminus of the chain. Phosphorylation can occur at various amino acids throughout the protein sequence.
Statement 5 is false. Phosphorylation of proteins is catalyzed by enzymes called kinases, not phosphatases. Phosphatases are responsible for removing phosphate groups, reversing the phosphorylation.
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Answer:
Interphase is when the cell grows and duplicates chromosomes. This is important for the cell to divide, because otherwise, the cell would shrink everytime it divided and would not have a sufficient amount of DNA
Explanation:
b. enzymes
c. products
d. substrates
Answer:
b. enzymes
Explanation:
For any reaction to happen, an energy barrier must be crossed first. This is called as activation energy. Enzymes are biological catalysts that lower the activation energy for a reaction. As a result the reaction is started sooner and its rate is fast.
The substrate binds to the active site of enzyme to form a substrate-enzyme complex. The reaction takes place and product is formed also releasing the enzyme back so that it can be used again.
b.) Lysosome
c.) Vacuole
d.) Cytoplasm
The Krebs cycle and electron transport chain take place in the inner membrane of the mitochondria, an organelle in the cell cytoplasm.
The mitochondria consists of an outer membrane, an inner membrane and a gel-like material called the matrix. The outer membrane covers the organelle like a skin. The inner membrane folds over many times and creates layered structures called cristae. It is where the Krebs cycle and the electron transport chain take place.
The folding of the inner membrane serve to increase surface area inside the mitochondria.
Over half the people who come here just want the answer, not the lesson they are avoiding. Mitochondria is the answer.
carbon monoxide
fungi
infection
blood clots
White blood cells are a type of immune cell that helps the body fight infection. They do this by engulfing and destroying bacteria, viruses, and other harmful microbes. Hence option D is correct.
They also produce antibodies, which are proteins that help the body recognize and fight specific invaders. Carbon monoxide, fungi, and blood clots are not directly attacked by white blood cells. However, they can all lead to infection, and white blood cells can play a role in fighting these infections.
For example, white blood cells can help to remove carbon monoxide from the body and prevent it from causing damage to tissues. They can also help to fight fungal infections by producing antibodies that target the fungi. And, white blood cells can help to break up blood clots that can lead to infection.
So, while white blood cells do not directly defend the body from carbon monoxide, fungi, or blood clots, they can play a role in preventing these conditions from leading to infection.
Therefore, option D, infection is correct.
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Answer:
Decease and Infection