BIO 181L FINAL EXAM QUESTIONS WITH
CORRECT ANSWERS 2025
catalyst - CORRECT ANSWER -a substance that increases the rate of reaction without being consumed
enzyme - CORRECT ANSWER -
a molecule that increases the rate of a chemical reaction without being consumed (protein)
energy of activation - CORRECT ANSWER -
amount of energy required to convert a substrate into a product
active site - CORRECT ANSWER -location on an enzyme that physically interacts with the substrate
how enzymes catalyze reactions - CORRECT ANSWER -1. substrate attaches to the active site
2. activation energy required is lowered
3. substrate becomes a product
4. enzyme separates
seven properties of enzymes - CORRECT ANSWER -1. most are proteins
2. highly specific
3. form an enzyme-substrate complex
4. do not affect direction of reaction
5. lower the activation energy
6. not consumed by reaction
7. highly regulated
how inhibitors work - CORRECT ANSWER -
keep enzyme in an active form, binds to enzymes to compete with the substrate
how different substrates affect the rate of enzyme reactions - CORRECT ANSWER -
enzymes are highly specific and workRbetter with some substrates than others
, how substrate concentration affects the rate of enzyme reactions - CORRECT ANSWER -
increase the rate of reaction because there would be more substrate molecules colliding with enzyme m
olecules
how enzyme concentration affects the rate of enzyme reactions - CORRECT ANSWER -
increases the rate of reaction because the substrate will have more chances to bind to the active site of
an enzyme
how pH effects the rate of enzyme reactions - CORRECT ANSWER -
extreme pH levelsRdenature the enzymes making them nonfunctional
how temperature effects the rate of enzyme reactions - CORRECT ANSWER -
temperatures outside the optimal range will change the structure and function of the enzyme making it
nonfunctional
how enzymes are regulated in the body - CORRECT ANSWER -
enzymes help regulate the body's equilibrium, enzymes are regulated by feedback inhibition
similarities of mitosis and meiosis - CORRECT ANSWER -prophase, metaphase, anaphase, and telophase
mitosis - CORRECT ANSWER -2 identical diploid daughter cells
meiosis - CORRECT ANSWER -results in 4 unique haploid daughter cells
steps of mitosis - CORRECT ANSWER -1. prophase
2. prometaphase
3. metaphase
4. anaphase
5. telophase
steps of meiosis - CORRECT ANSWER -meiosis 1: two haploid daughter cells
CORRECT ANSWERS 2025
catalyst - CORRECT ANSWER -a substance that increases the rate of reaction without being consumed
enzyme - CORRECT ANSWER -
a molecule that increases the rate of a chemical reaction without being consumed (protein)
energy of activation - CORRECT ANSWER -
amount of energy required to convert a substrate into a product
active site - CORRECT ANSWER -location on an enzyme that physically interacts with the substrate
how enzymes catalyze reactions - CORRECT ANSWER -1. substrate attaches to the active site
2. activation energy required is lowered
3. substrate becomes a product
4. enzyme separates
seven properties of enzymes - CORRECT ANSWER -1. most are proteins
2. highly specific
3. form an enzyme-substrate complex
4. do not affect direction of reaction
5. lower the activation energy
6. not consumed by reaction
7. highly regulated
how inhibitors work - CORRECT ANSWER -
keep enzyme in an active form, binds to enzymes to compete with the substrate
how different substrates affect the rate of enzyme reactions - CORRECT ANSWER -
enzymes are highly specific and workRbetter with some substrates than others
, how substrate concentration affects the rate of enzyme reactions - CORRECT ANSWER -
increase the rate of reaction because there would be more substrate molecules colliding with enzyme m
olecules
how enzyme concentration affects the rate of enzyme reactions - CORRECT ANSWER -
increases the rate of reaction because the substrate will have more chances to bind to the active site of
an enzyme
how pH effects the rate of enzyme reactions - CORRECT ANSWER -
extreme pH levelsRdenature the enzymes making them nonfunctional
how temperature effects the rate of enzyme reactions - CORRECT ANSWER -
temperatures outside the optimal range will change the structure and function of the enzyme making it
nonfunctional
how enzymes are regulated in the body - CORRECT ANSWER -
enzymes help regulate the body's equilibrium, enzymes are regulated by feedback inhibition
similarities of mitosis and meiosis - CORRECT ANSWER -prophase, metaphase, anaphase, and telophase
mitosis - CORRECT ANSWER -2 identical diploid daughter cells
meiosis - CORRECT ANSWER -results in 4 unique haploid daughter cells
steps of mitosis - CORRECT ANSWER -1. prophase
2. prometaphase
3. metaphase
4. anaphase
5. telophase
steps of meiosis - CORRECT ANSWER -meiosis 1: two haploid daughter cells
