DAT Biology Practice Exam | 100% Correct
Answers | Verified | Latest 2024 Version
Which of the following does not occur during telophase?
A. Reassembly of the nuclear envelope
B. Reappearance of the nucleoli
C. Uncoiling of the chromosomes
D. Centromere division
E. Dismantling of the spindles - ✔✔D. Centromere Division
Explanation: Centromere division occurs during anaphase of mitosis and during anaphase II of meiosis
Enzymes which catalyze the phosphorylation of organic molecules are called
A. Lipases
B. Kinases
C. Mutases
D. Amylases
E. Esterases - ✔✔B. Kinases
Explanation: Lipases digest fats; Mutases remove erroneous nucleotides from DNA; Amylases break
down starches into disaccharides; Esterases cleave ester bonds
The primary transmitter of the parasympathetic nervous system is
A. Norepinephrine
B. Epinephrine
C. Acetylcholine
D. Cholinesterase
E. Amylase - ✔✔C. Acetylcholine
, According to the first law of thermodynamics,
A. Energy transfer leads to less organization
B. A system that is isolated from any energy source increases in entropy
C. Evolution is possible through the absorption of energy
D. Energy is balanced by living things
E. Total energy in an isolated system remains constant - ✔✔E. Total energy in an isolated system remains
constant
Explanation: The first law of thermodynamics states "in any process, the total energy of the universe
remains constant," or in other words, energy can neither be created nor destroyed. This also applies to
any isolated system, i.e., any system that does not exchange mass or energy with its surroundings
The myeline sheath is NOT
A. Produced by Schwann cells in the peripheral nervous system
B. Found surrounding all vertebral axons
C. Produced by the fusion of many lamellae of plasma membrane
D. Mostly lipid in composition
E. Used to increase the speed of an action potential - ✔✔B. Found surrounding all vertebral axons
Explanation: The myeline sheath only surrounds certain axons, but not all of them
In the circulatory system, blood pressure gradually drops as blood flows from artery to capillary due to
I. Friction between blood and blood vessel walls
II. The increase in total cross-sectional area
III. Arteriosclerosis (artery plaque accumulation)
A. I only
B. II only
C. I and II
D. II and III
Answers | Verified | Latest 2024 Version
Which of the following does not occur during telophase?
A. Reassembly of the nuclear envelope
B. Reappearance of the nucleoli
C. Uncoiling of the chromosomes
D. Centromere division
E. Dismantling of the spindles - ✔✔D. Centromere Division
Explanation: Centromere division occurs during anaphase of mitosis and during anaphase II of meiosis
Enzymes which catalyze the phosphorylation of organic molecules are called
A. Lipases
B. Kinases
C. Mutases
D. Amylases
E. Esterases - ✔✔B. Kinases
Explanation: Lipases digest fats; Mutases remove erroneous nucleotides from DNA; Amylases break
down starches into disaccharides; Esterases cleave ester bonds
The primary transmitter of the parasympathetic nervous system is
A. Norepinephrine
B. Epinephrine
C. Acetylcholine
D. Cholinesterase
E. Amylase - ✔✔C. Acetylcholine
, According to the first law of thermodynamics,
A. Energy transfer leads to less organization
B. A system that is isolated from any energy source increases in entropy
C. Evolution is possible through the absorption of energy
D. Energy is balanced by living things
E. Total energy in an isolated system remains constant - ✔✔E. Total energy in an isolated system remains
constant
Explanation: The first law of thermodynamics states "in any process, the total energy of the universe
remains constant," or in other words, energy can neither be created nor destroyed. This also applies to
any isolated system, i.e., any system that does not exchange mass or energy with its surroundings
The myeline sheath is NOT
A. Produced by Schwann cells in the peripheral nervous system
B. Found surrounding all vertebral axons
C. Produced by the fusion of many lamellae of plasma membrane
D. Mostly lipid in composition
E. Used to increase the speed of an action potential - ✔✔B. Found surrounding all vertebral axons
Explanation: The myeline sheath only surrounds certain axons, but not all of them
In the circulatory system, blood pressure gradually drops as blood flows from artery to capillary due to
I. Friction between blood and blood vessel walls
II. The increase in total cross-sectional area
III. Arteriosclerosis (artery plaque accumulation)
A. I only
B. II only
C. I and II
D. II and III
