Answer:
Coal is a fossil fuel. It comes from the remains of plants that died about 100 to 400 million years ago. Coal is a non-renewable energy source because it takes millions of years to form
ANSWER: Genes
Genes hold an organisms hereditary information.
When an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.
<h3>What is an allosteric enzyme?</h3>
Allosteric enzymes are catalysts that exhibit a site for binding that is distinct from the active site.
Allosteric enzymes are controlled by many effector compounds that can bind to different sites.
The active site of the enzyme is the molecular domain of this protein where reactants can bind during a chemical reaction.
The heterotropic effects occur when the ligands of allosteric modulators (effectors) are linked to the enzyme.
An allosteric modulator is a molecule that binds to the enzyme in a site different to the active site and this binding alters its tridimensional conformation, thereby activating it or deactivating it.
In conclusion, when an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.
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Answer:a. gastropods, bivalves
Explanation:mollusca is a phylum which consist of organisms whose body are bilaterally symmentrical (can be dived into two equal mirror part through a unique plane)and segmented, except the gastropods which are asymmetrical.
Mollusca possess a ventral body wall and is modified into a muscular foot for lomotion.they use radula for feeding , except the bivalves which are filter feeders
They possess gills/ctinedia for respiration.they may also use lungs or body surface for respiration.
Snail is an example of gastropoda.they are the most populous and diverse class of mollusca.other examples include slugs, periwinkle etc.
Oysters is an example of bivalva.they have two calcerous valves held together by a ligament.they have no head and their body is compressed in their shell.examples oysters and clams.
