All Free Biology MCQs with Answers

• A. Transgenic animal
• B. Transgender animal
• C. Clone
• D. Trans sexual animal

Explanation: An animal in which we have incorporated a desired foreign gene to get produced our desired product is called transgenic animal.

• A. Only female produce milk
• B. Females don't produce milk until maturity
• C. Each animal urinate throughout life
• D. It is easier to extract proteins from urine than from milk

Explanation: As urine normally does not contain any protein thus it is easier to extract proteins from urine than from milk.

• A. SCIDS
• B. Cystic fibrosis
• C. Hypercholesterolemia
• D. Cardio vascular disorder

Explanation: In familial hypercholesterolemia liver cells lack specific receptor sites needed to remove cholesterol from blood.

• A. Gene therapy
• B. Transplant therapy
• C. Chemotherapy
• D. Gene therapy through transplant

Explanation: Parkinson's disease is caused by deficiency of dopamine, a neurotransmitter of brain. When its deficiency is made up it is cured.

• A. He ought to speak French well. He lived there for twenty years.
• B. He ought to speak French well. He lived in France for twenty years.
• C. He ought to speak French well. He lived there since twenty years.
• D. He ought to speak French well. He has been living there for twenty years.

Explanation: This option is correct because it clearly specifies the location (France) where he lived for twenty years, making the sentence more…

• A. The Ballet School has some pianists on salary; others are paid by the hour.
• B. The Ballet School has some pianists on salary; others are paid by per hour.
• C. The Ballet School has some pianists on the salary; others are paid by the hour.
• D. Ballet School has some pianists on salary; the others are paid by the hour.

Explanation: The sentence is describing the payment arrangements for pianists at the Ballet School, and the correct form is to use the preposition "by"…

• A. He was good, the bad and ugly in one person.
• B. He was the good, bad and ugly in one person.
• C. He was good, bad and the ugly in one person.
• D. He was the good, the bad and the ugly in one person.

Explanation: The correct answer is D. He was the good, the bad and the ugly in one person.

• A. Lungs
• B. Eyes
• C. Brain
• D. Bones

Explanation: Parkinson disease results from degeneration of dopamine-producing neurons in brain regions involved in movement control, especially the…

• A. 2%
• B. 3%
• C. 7%
• D. 8%

Explanation: The adult human brain has a mass of roughly 1.3 to 1.4 kg, while average body mass is about 65 to 70 kg, giving approximately 1.3/65 x…

• A. 140-150
• B. 115-125
• C. 72-80
• D. None of these

Explanation: A normal resting adult pulse is commonly about 72 beats/min, and the listed 72-80 beats/min range falls within the usual resting range.

• A. Cytokinesis
• B. Interphase
• C. Both (A) and (D)
• D. Karyokinesis

Explanation: Both is right option as mitosis is divided into two phases karyokinesis and cytokinesis.

• A. G1 phase
• B. G2 phase
• C. Interphase
• D. None of these

Explanation: Interphase of first meiotic division lacks G2 phase, while interphase of second meiotic division lacks S-phase.

• A. 23
• B. 0
• C. 46
• D. 92

Explanation: Tetrad formation is associated with meiosis and is characterized by the pairing of homologous chromosomes.

• A. Magnification
• B. Resolution
• C. Fixation
• D. Electrophoresis
• E. Ultracentrifugation

Explanation: Magnification refers to the increase in the apparent size of an object, while resolution refers to the ability to distinguish two…

• A. Forming phase
• B. Maturing phase
• C. Cis-end
• D. None of these

Explanation: The maturing phase of the Golgi apparatus is when the secretory granules become fully formed and ready for secretion.

• A. Kinetochore
• B. Telomere
• C. Centromere region
• D. All of these

Explanation: The spindle fibre attaches to the centromere at a proteinaceous structure called the kinetochore.

• A. Cell membrane
• B. Matrix
• C. Thylakoid
• D. Stroma

Explanation: In the chloroplast, chlorophyll molecules are arranged in groups called photosystems.

• A. DNA replication-Ribosome
• B. Protein synthesis-Smooth Endoplasmic Reticulum
• C. Anaerobic respiration-Cristae
• D. Modification-Golgi apparatus

Explanation: The correct answer is Modification-Golgi apparatus because the Golgi apparatus is essential for processing and modifying proteins and…

• A. Lysosomes
• B. RER
• C. Vacuoles
• D. None of these

Explanation: lysosomes are formed through the Golgi complex, depending on the type of cell and its function.

• A. A membrane-bound nucleus
• B. Presence of ribosomes
• C. A cell wall made up of cellulose
• D. Linear genome

Explanation: Both prokaryotic and eukaryotic cells share the presence of ribosomes, which are crucial for protein synthesis.