Answer:
The correct answer is d
Explanation:
Allosteric enzymes have multiple binding sites to different ligands called allosteric sites (different from the active site), these ligands can modify their kinetic properties. They are generally made up of more than one polypeptide chain, and have a quaternary structure, an enzyme with a quaternary structure can bind more than one substrate molecule. An allosteric enzyme is an enzyme whose activity is regulated by an allosteric center, which is a site, other than the active center of the enzyme, to which a regulator (called an allosteric regulator) binds in a reversible and non-covalent manner. The binding of this regulator modifies the three-dimensional structure of the enzyme and affects the configuration of the active site, thus increasing or decreasing its activity, depending on the case. The allosteric sites present in regulatory enzymes is where allosteric effectors or inhibitors are attached, causing a conformational change in the substrate binding site or catalytic site, thus regulating enzyme activity.
1. Step 1 The Sun emits energy.
<span>2. Step 2 Plants absorb energy from the Sun and use it for photosynthesis. </span>
<span>3. Step 3 A rabbit eats the plants and uses the energy for growth and respiration. </span>
<span>4. Step 4 A fox eats the rabbit and uses the energy for growth and respiration. </span>
<span>5. Step 5 The fox dies and is decomposed. </span>
Answer:
C. To store water and other materials inside the cell
Explanation:
The part labeled W in the diagram is the central vacuole. When full of water, the cells in a plant provide turgor pressure. When the central vacuoles in the cells are empty, the plant wilts.
Saliva has the enzyme amylase that breaks some starches down into maltose and dextrin.
