Question 1

Which of the following best describes the structure of proteins?

Accepted Answer

A) Polymers of nucleic acids 
B) Polymers of fatty acids 
C) Polymers of steroids 
D) Polymers of amino acids 
A) Polymers of nucleic acids 
B) Polymers of fatty acids 
C) Polymers of steroids 
D) Polymers of amino acids

Question 2

Which of these is not a type of RNA?

Accepted Answer

A) cRNA 
B) tRNA 
C) mRNA 
D) rRNA 
A) cRNA 
B) tRNA 
C) mRNA 
D) rRNA

Question 3

Crossing over occurs during which phase of meiosis?

Accepted Answer

A) Prophase I 
B) Prophase II 
C) Telophase I 
D) Telophase II 
A) Prophase I 
B) Prophase II 
C) Telophase I 
D) Telophase II

Question 4

Which of the following is a lipid that is a component of cellular membranes and a precursor to significant hormones and drugs?

Accepted Answer

A) Unsaturated fats 
B) Phospholipids 
C) Saturated fats 
D) Steroids 
A) Unsaturated fats 
B) Phospholipids 
C) Saturated fats 
D) Steroids

Question 5

The cell membrane is composed of which of the following?

Accepted Answer

A) A rigid layer of cytoskeleton 
B) A bilayer of phospholipid molecules 
C) A wall of cholesterol and phospholipids 
D) A single layer of phospholipid molecules 
A) A rigid layer of cytoskeleton 
B) A bilayer of phospholipid molecules 
C) A wall of cholesterol and phospholipids 
D) A single layer of phospholipid molecules

Question 6

Which of the following equations represents the simplified chemistry behind cellular photosynthesis?

Accepted Answer

A) 6CO2 + 6H2O + Light energy → C6H12O6 + 6O2 
B) C6 H12O6 + 6O2 → 6CO2 + 6H2 O + ATP 
C) 6CO2 + 6O2 + ATP → C6H12O6 + 6H2O 
D) C6H12O6 + 6CO2 + Light energy → 6O2 + 6H2O 
A) 6CO2 + 6H2O + Light energy → C6H12O6 + 6O2 
B) C6 H12O6 + 6O2 → 6CO2 + 6H2 O + ATP 
C) 6CO2 + 6O2 + ATP → C6H12O6 + 6H2O 
D) C6H12O6 + 6CO2 + Light energy → 6O2 + 6H2O

Question 7

In humans, the trait for brown eyes is dominant (B) and blue eyes is recessive (b). Which alleles would be present in the gametes of a human if that human is heterozygous for eye color?

Accepted Answer

A) Each gamete would include both the dominant and recessive alleles for eye color regardless of the parent's traits. 
B) Only B would be present because it is the dominant allele. 
C) Each gamete would include both the dominant and recessive alleles for eye color because the parent is heterozygous, for that trait. 
D) Half of the gametes would contain only the dominant allele while the other half would contain only the recessive allele. 
A) Each gamete would include both the dominant and recessive alleles for eye color regardless of the parent's traits. 
B) Only B would be present because it is the dominant allele. 
C) Each gamete would include both the dominant and recessive alleles for eye color because the parent is heterozygous, for that trait. 
D) Half of the gametes would contain only the dominant allele while the other half would contain only the recessive allele.

Question 8

What is represented by the following formula?
C6 H12O6 + 6O2 → 6CO2 + 6H2 O + ATP

Accepted Answer

A) Photosynthesis 
B) Glycolysis 
C) Cellular respiration 
D) The Calvin cycle 
A) Photosynthesis 
B) Glycolysis 
C) Cellular respiration 
D) The Calvin cycle

Question 9

What type of bond forms between base pairs in DNA?

Accepted Answer

A) hydrogen 
B) hydrophobic 
C) glycosidic 
D) phosphodiester 
A) hydrogen 
B) hydrophobic 
C) glycosidic 
D) phosphodiester

Question 10

Which organelle is correctly paired with its function?

Accepted Answer

A) Nucleus - stores DNA 
B) Mitochondria - protein synthesis 
C) Peroxisome - cellular respiration 
D) Endoplasmic reticulum - locomotion 
A) Nucleus - stores DNA 
B) Mitochondria - protein synthesis 
C) Peroxisome - cellular respiration 
D) Endoplasmic reticulum - locomotion

Question 11

Which of the following correctly represents a heterozygous individual?

Accepted Answer

A) hH 
B) Hh 
C) hh 
D) HH 
A) hH 
B) Hh 
C) hh 
D) HH

Question 12

Which of the following best describes the molecular structure of water?

Accepted Answer

A) Two hydrogen atoms covalently bonded to one oxygen atom 
B) Two hydrogen atoms ionically bonded to one oxygen atom 
C) Two oxygen atoms covalently bonded to one hydrogen atom 
D) Two oxygen atoms ionically bonded to one hydrogen atom 
A) Two hydrogen atoms covalently bonded to one oxygen atom 
B) Two hydrogen atoms ionically bonded to one oxygen atom 
C) Two oxygen atoms covalently bonded to one hydrogen atom 
D) Two oxygen atoms ionically bonded to one hydrogen atom

Question 13

Which of the following about phospholipids is incorrect?

Accepted Answer

A) The phosphate group in phospholipids is nonpolar and non-soluble in water. 
B) Phospholipids consist of two fatty acids bonded to a phosphate group. 
C) Phospholipids are important in the function of cellular membranes. 
D) The phosphate group is charged. 
A) The phosphate group in phospholipids is nonpolar and non-soluble in water. 
B) Phospholipids consist of two fatty acids bonded to a phosphate group. 
C) Phospholipids are important in the function of cellular membranes. 
D) The phosphate group is charged.

Question 14

How are carbohydrates absorbed into the bloodstream?

Accepted Answer

A) Carbohydrates are turned into glucose and absorbed into the blood via the walls of the small intestine. 
B) Carbohydrates are turned into disaccharides and absorbed into the blood via the walls of the stomach. 
C) Carbohydrates are turned into oxygen and are absorbed into the blood via the lungs. 
D) Carbohydrates are turned into fatty acids and absorbed into the blood via the walls of the large intestine. 
A) Carbohydrates are turned into glucose and absorbed into the blood via the walls of the small intestine. 
B) Carbohydrates are turned into disaccharides and absorbed into the blood via the walls of the stomach. 
C) Carbohydrates are turned into oxygen and are absorbed into the blood via the lungs. 
D) Carbohydrates are turned into fatty acids and absorbed into the blood via the walls of the large intestine.

Question 15

During which phase of cell reproduction do the cell's chromosomes line up along the middle of the cell?

Accepted Answer

A) Prometaphase 
B) Cytokinesis 
C) Prophase 
D) Metaphase 
A) Prometaphase 
B) Cytokinesis 
C) Prophase 
D) Metaphase

Question 16

Which of the following makes it possible to predict genotype and phenotype of the offspring of sexual reproduction?

Accepted Answer

A) ELISA 
B) Mendel square 
C) PCR 
D) Punnett square 
A) ELISA 
B) Mendel square 
C) PCR 
D) Punnett square

Question 17

What are the two catabolic pathways that lead to energy production in a cell?

Accepted Answer

A) Cellular respiration and fermentation 
B) Fermentation and anaerobic respiration 
C) Anaerobic and cellular respiration 
D) Combustion and fermentation 
A) Cellular respiration and fermentation 
B) Fermentation and anaerobic respiration 
C) Anaerobic and cellular respiration 
D) Combustion and fermentation

Question 18

What is the function of lysosomes?

Accepted Answer

A) Energy production 
B) Digestion 
C) Protein synthesis 
D) Storage 
A) Energy production 
B) Digestion 
C) Protein synthesis 
D) Storage

Question 19

What happens to mRNA once its message has been translated?

Accepted Answer

A) It is destroyed and expelled from the cell 
B) It is degraded and the nucleotides are recycled 
C) It is stored in a ribosome until needed again 
D) It travels back into the nucleus to transcribe the same gene again 
A) It is destroyed and expelled from the cell 
B) It is degraded and the nucleotides are recycled 
C) It is stored in a ribosome until needed again 
D) It travels back into the nucleus to transcribe the same gene again

Question 20

Which of the following is the typical magnification power of the ocular lens on a microscope?

Accepted Answer

A) 10x 
B) 5x 
C) 50x 
D) 20x 
A) 10x 
B) 5x 
C) 50x 
D) 20x

Which of the following best describes the structure of proteins?

Which of these is not a type of RNA?

Crossing over occurs during which phase of meiosis?

Which of the following is a lipid that is a component of cellular membranes and a precursor to significant hormones and drugs?

The cell membrane is composed of which of the following?

Which of the following equations represents the simplified chemistry behind cellular photosynthesis?

In humans, the trait for brown eyes is dominant (B) and blue eyes is recessive (b). Which alleles would be present in the gametes of a human if that human is heterozygous for eye color?

What is represented by the following formula? C₆ H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂ O + ATP

What type of bond forms between base pairs in DNA?

Which organelle is correctly paired with its function?

Which of the following correctly represents a heterozygous individual?

Which of the following best describes the molecular structure of water?

Which of the following about phospholipids is incorrect?

How are carbohydrates absorbed into the bloodstream?

During which phase of cell reproduction do the cell's chromosomes line up along the middle of the cell?

Which of the following makes it possible to predict genotype and phenotype of the offspring of sexual reproduction?

What are the two catabolic pathways that lead to energy production in a cell?

What is the function of lysosomes?

What happens to mRNA once its message has been translated?

Which of the following is the typical magnification power of the ocular lens on a microscope?

HESI-A2-Chemistry

HESI-A2-Math

HESI-A2-Vocabulary

HESI-A2-Reading

HESI-A2-Grammar

HESI-A2-Physics

HESI-A2-Anatomy & Physiology

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Exam 6: HESI-A2-Biology

Which of the following best describes the structure of proteins?

Which of these is not a type of RNA?

Crossing over occurs during which phase of meiosis?

Which of the following is a lipid that is a component of cellular membranes and a precursor to significant hormones and drugs?

The cell membrane is composed of which of the following?

Which of the following equations represents the simplified chemistry behind cellular photosynthesis?

In humans, the trait for brown eyes is dominant (B) and blue eyes is recessive (b). Which alleles would be present in the gametes of a human if that human is heterozygous for eye color?

What is represented by the following formula? C6 H12O6 + 6O2 → 6CO2 + 6H2 O + ATP

What type of bond forms between base pairs in DNA?

Which organelle is correctly paired with its function?

Which of the following correctly represents a heterozygous individual?

Which of the following best describes the molecular structure of water?

Which of the following about phospholipids is incorrect?

How are carbohydrates absorbed into the bloodstream?

During which phase of cell reproduction do the cell's chromosomes line up along the middle of the cell?

Which of the following makes it possible to predict genotype and phenotype of the offspring of sexual reproduction?

What are the two catabolic pathways that lead to energy production in a cell?

What is the function of lysosomes?

What happens to mRNA once its message has been translated?

Which of the following is the typical magnification power of the ocular lens on a microscope?

HESI-A2-Chemistry

HESI-A2-Math

HESI-A2-Vocabulary

HESI-A2-Reading

HESI-A2-Grammar

HESI-A2-Physics

HESI-A2-Anatomy & Physiology

Filters

What is represented by the following formula? C₆ H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂ O + ATP