Correct answer: A). The enzyme influences the speed of change from substrate to product
The enzymes are the biological catalyst that speed up the rate of chemical reactions by decreasing the activation energy of the reaction pathway.
They increase the speed of change of substrate to the product and it remains unchanged in the reaction. Hence, it can be used again and again.
Enzymes are highly specific in nature, only a specific substrate binds to the enzyme's active site. Hence, a particular enzyme is required to catalyze a reaction.
The statement "The enzyme influences the speed of change from substrate to product" is correct. Option 1 is correct.
Enzymes are biological catalysts that speed up chemical reactions by lowering the activationenergy required for the reaction to occur. Enzymes do not undergo any permanent changes during the reaction and are not consumed in the process.
Enzymes are proteins that play a crucial role in biological reactions by facilitating the conversion of substrates into products. Substrates are the specific molecules that bind to the active site of an enzyme, forming an enzyme-substrate complex. The active site is a region on the enzyme's surface that has a complementary shape to the substrate.
When the substrate binds to the enzyme's active site, it undergoes a temporary change in shape, known as the induced fit model. This induced fit brings the reactive groups of the substrate close together, making it easier for the chemicalreaction to occur. As a result, the activation energy required for the reaction to proceed is significantly reduced.
The enzyme does not alter the nature of the reaction or the final products. Instead, it provides an environment where the reaction can occur more rapidly and efficiently. Once the reaction is complete, the enzyme releases the products, and it can then bind to new substrate molecules to catalyze additional reactions.
Enzymes are highly specific, meaning that each enzyme catalyzes a particular reaction with specific substrates. This specificity ensures that only the appropriate substrates bind to the enzyme, preventing unwanted side reactions in the cell.
In summary, enzymes and substrates are related through the process of enzyme-substrate interactions, where enzymes accelerate the conversion of substrates into products by lowering the activation energy required for the reaction. This crucial role of enzymes in biological processes makes them vital for maintaining the proper functioning of living organisms.
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2. prophase
3. metaphase
4. telophase
Chromosomes attach to spindle fibres by their centromeres during metaphase of mitosis.
Further Explanation:
Interphase is the resting phase or metabolic phase of a cell where it prepares itself for the cell division process. Interphase comprises of sub-phases namely, Gap1 phase, Synthesis phase and Gap2 phase. G1 is the first gap phase where a cell grows larger in size and the cytoplasm volume increases as more organelles are produced. During Synthesis phase, the strands of DNA replicates. G2 is another gap phase in which the cell becomes much larger in size and this phase is followed by mitosis where cell division occurs.
Mitosis or somatic cell division is comprised of four phases which includes prophase, metaphase, anaphase and telophase. A somatic cell divides to give rise to two identical daughter cells where each cell contains exact copy of each chromosomes present in the parent cell. In the prophase, the envelope that covers the nucleus and nucleolus disappears and chromosomes become visible by forming two chromatids attached to centromere.
In the metaphase, chromosomes alignment at the metaphase plate occurs and spindle fibres attach to the centromere. Spindle fibres pull the chromatids away from the metaphase plate towards the opposite poles of the cell during anaphase. In the telophase, nuclear membrane reforms, chromosomes decondense and nuclear membrane reforms around each daughter nuclei. The cytokinesis is the final stage of cell division process where the parent cell is pinched off to result in two daughter cells.
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Answer Details:
Grade: High school
Subject: Biology
Chapter: Cell division
Keywords: Mitosis, prophase, metaphase, anaphase, telophase, interphase, cytokinesis, somatic cell, nucleolus, nucleus, centromere, chromatids, spindle fibres.
- ATP (energy)
- oxygen
- water
- light
- glucose (sugar/carbohydrates)
b. False
Answer: FALSE (just took the test)
Answer:
a muscle thing