Human Biology Practice Quiz Test!

72 Questions | By Funkytrunks22 | Updated: Mar 22, 2022 | Attempts: 5631

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Human Biology Practice Quiz Test! - Quiz

Questions and Answers

1.

If the neutrons in a nucleus of an atom are more numerous than the number of protons in the nucleus, then:
- A.
  
  The atom is considered to be an ion.
- B.
  
  The nucleus is not possible.
- C.
  
  The atomic weight will always be the same as the number of electrons in the atom.
- D.
  
  The atom has extra electrons
- E.
  
  None of the above is true.
2.

In the human body, the food we eat is ultimately stored in what form of energy?
- A.
  
  ATP
- B.
  
  Carbon Dioxide
- C.
  
  Fructose
- D.
  
  Heat
- E.
  
  Oxygen
3.

What is a non-polar molecule?
- A.
  
  The atoms bond by neutrons instead of electrons.
- B.
  
  Only those which contain hydrogen.
- C.
  
  Water.
- D.
  
  The atoms share the electrons equally.
- E.
  
  Ions that become neutral from bonding.
4.

Which organelle is the site of most ATP formation in the cell?
- A.
  
  Mitochondrion
- B.
  
  Nucleus
- C.
  
  Ribosomes
- D.
  
  Smooth Endoplasmic Reticulum
- E.
  
  None of the above
5.

The name of the process shown here is:
- A.
  
  Active Transport
- B.
  
  Condensation Reactions
- C.
  
  DNA Synthesis
- D.
  
  Facilitated Diffusion
- E.
  
  Osmosis
6.

This is found in the membrane and forms ATP.
- A.
  
  ATP Synthase
- B.
  
  Glycolysis of cellular respiration
- C.
  
  Krebs cycle of cellular respiration
- D.
  
  Protein complexes which pass electrons
- E.
  
  None of the above
7.

Which of the following is a characteristic of living organisms?
- A.
  
  Living organisms respond to the environment.
- B.
  
  Living organisms are composed of one or more cells.
- C.
  
  Living organisms use energy.
- D.
  
  Living organisms reproduce.
- E.
  
  All of the above are characteristics of living things.
8.

Which bond is the weakest?
- A.
  
  Covalent
- B.
  
  Hydrogen
- C.
  
  Ionic
- D.
  
  Peptide
- E.
  
  Both C and D are the least strong (weakest)
9.

The last heart chamber to which blood flows before going to the body is the:
- A.
  
  Left atrium
- B.
  
  Left ventricle
- C.
  
  Aorta
- D.
  
  Right ventricle
- E.
  
  Right atrium
10.

The ______ causes contractions of the ventricles of the heart.
- A.
  
  Vena cava
- B.
  
  AB Node
- C.
  
  AV Node
- D.
  
  Aorta
- E.
  
  Air pressure in the lungs
11.

What is a characteristic of DNA?
- A.
  
  DNA can be replicated.
- B.
  
  DNA contains phosphate (P).
- C.
  
  DNA contains ribose as its sugar.
- D.
  
  A and B are correct, C is incorrect.
- E.
  
  B and C are correct, A is incorrect.
12.

After an mRNA molecule has been produced:
- A.
  
  A complementary mRNA copy must be made so that the mRNA has two strands.
- B.
  
  It leaves the nucleus.
- C.
  
  It must be made into a circle by joining the ends.
- D.
  
  It digests a ribosome.
- E.
  
  None of the above is correct.
13.

DNA replication occurs during:
- A.
  
  Interphase
- B.
  
  Prophase
- C.
  
  Metaphase
- D.
  
  Anaphase
- E.
  
  Telophase
14.

If A is dominant to a, the offspring of the cross AA x aa will:
- A.
  
  Be homozygous.
- B.
  
  Have the same genotype as the AA parent.
- C.
  
  Have the same genotype as the aa parent.
- D.
  
  Display the same phenotype as the AA parent.
- E.
  
  Display the same phenotype as the aa parent.
15.

What is a codon?
- A.
  
  A codon is three amino acids in a row.
- B.
  
  A three amino acid portion of mRNA.
- C.
  
  A three nucleotide base sequence in mRNA which codes for an amino acid.
- D.
  
  The sugar phosphate backbone.
- E.
  
  Three DNA bases which code for a tRNA molecule.
16.

Air enters the human lung because of:
- A.
  
  Suction from the lung capillaries.
- B.
  
  Vacuum in the pharynx.
- C.
  
  Blood pressure.
- D.
  
  Squeezing of the trachea.
- E.
  
  Atmospheric air pressure.
17.

This causes the membrane potential to rise (depolarize) all along the axon.
- A.
  
  K+
- B.
  
  Na+
- C.
  
  Ca++
- D.
  
  Neurotransmitter chemical
- E.
  
  Na+/K+ pump (Sodium/Potassium pump)
18.

This changes shape to move actin.
- A.
  
  Actin
- B.
  
  ADP/ATP
- C.
  
  Myosin
- D.
  
  Tropomyosin
- E.
  
  Troponin
19.

Glucose is removed from the nephron and reabsorbed into the blood from the:
- A.
  
  Bowman's capsule.
- B.
  
  Collecting tubule.
- C.
  
  Distal tubule.
- D.
  
  Loop of Henle.
- E.
  
  Proximal tubule.
20.

The waste product urea is formed in the:
- A.
  
  Bowman's capsule.
- B.
  
  Collecting tubule.
- C.
  
  Gall bladder.
- D.
  
  Liver.
- E.
  
  Red blood cells.
21.

A specific immune response means that:
- A.
  
  Antibodies are produced only by T cells rather than B cells.
- B.
  
  The response is towards a specific antigen.
- C.
  
  Activated B cells are produced but memory B cells are not produced.
- D.
  
  It occurs only during specific times of the day.
- E.
  
  Only specific cuts or wounds are protected.
22.

One thing which helps make a vaccination work is:
- A.
  
  A mast cell.
- B.
  
  Platelets.
- C.
  
  Memory B cells.
- D.
  
  A slower response to a specific antigen the second time it invades the body.
- E.
  
  Non-specific defense mechanisms.
23.

Cell membrane proteins called Major Histocompatability Complex (MHC) serve to:
- A.
  
  Stimulate release of antibodies from helper T cells.
- B.
  
  Allow the attachment of a muscle to a bone.
- C.
  
  Prevent the backflow of blood in the arteries.
- D.
  
  Slow the clotting of blood to prevent a scar.
- E.
  
  None of the above is correct.
24.

Which of the following type of bond is used when a peptide bond is formed?
- A.
  
  Covalent
- B.
  
  Ionic
- C.
  
  Both covalent and ionic bonds.
- D.
  
  Bond formed by removing CO2 (carbon dioxide).
- E.
  
  None of the above is used when a peptide bond is formed.
25.

A common characteristic of the formation of polymers is that:
- A.
  
  All types of polymers are made only by plants.
- B.
  
  All types of polymers use peptide bonds.
- C.
  
  All types of polymers are produced using one or more dehydration(=condensation) reactions.
- D.
  
  All types of polymers form CO2 (carbon dioxide) as they form.
- E.
  
  All types of polymers use the same monomers, only arranged in different ways.