PCAT STUDY GUIDE|VERIFIED QUESTIONS AND CORRECT DETAILED
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027
The breakdown of a disaccharide releases energy which is stored as ATP. This is an example of a(n) -
ANSWER✔ Exothermic Reaction
Which of the following molecules is thought to have acted as the first enzyme in early life on earth? -
ANSWER✔ RNA
Cyanide is a poison that binds to the active site of the enzyme cytochrome c and prevents its activity.
Cyanide is a(n) - ANSWER✔ Inhibitor
In photosynthesis, high-energy electrons move through electron transport chains to produce ATP and
NADPH. Which of the following provides the energy to create high energy electrons? - ANSWER✔
Light
The synaptonemal complex is present in which of the following phases of the cell cycle? - ANSWER✔
Telophase of meiosis I
Leaves have parallel veins - ANSWER✔ Moncots
In ferns, the joining of egg and sperm produces a zygote, which will grow into the - ANSWER✔
Sporophyte
Which of the following processes is an example of positive feedback? - ANSWER✔ Increased nursing
stimulates increased milk production in mammary glands
A population of 1000 individuals has 110 births and 10 deaths in a year. Its growth rate (r) is equal to -
ANSWER✔ 0.1 per year
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027
The breakdown of a disaccharide releases energy which is stored as ATP. This is an example of a(n) -
ANSWER✔ Exothermic Reaction
Which of the following molecules is thought to have acted as the first enzyme in early life on earth? -
ANSWER✔ RNA
Cyanide is a poison that binds to the active site of the enzyme cytochrome c and prevents its activity.
Cyanide is a(n) - ANSWER✔ Inhibitor
In photosynthesis, high-energy electrons move through electron transport chains to produce ATP and
NADPH. Which of the following provides the energy to create high energy electrons? - ANSWER✔
Light
The synaptonemal complex is present in which of the following phases of the cell cycle? - ANSWER✔
Telophase of meiosis I
Leaves have parallel veins - ANSWER✔ Moncots
In ferns, the joining of egg and sperm produces a zygote, which will grow into the - ANSWER✔
Sporophyte
Which of the following processes is an example of positive feedback? - ANSWER✔ Increased nursing
stimulates increased milk production in mammary glands
A population of 1000 individuals has 110 births and 10 deaths in a year. Its growth rate (r) is equal to -
ANSWER✔ 0.1 per year
