Biology Exam Questions Overview

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Questions and Answers

What is the function of afferent nerve fibres?

Deliver signals to the immune system

Transmit signals from CNS to muscles

Carry impulses from receptors to the CNS (correct)

Carry impulses to effector organs

Which of the following describes bioaugmentation?

Reduction of pest populations through chemical means

Addition of beneficial bacteria to enhance waste treatment (correct)

Production of fertilizers using fungal growth

Natural fertilization through animal excrement

Which carbohydrate acts as a polymer of glucose?

Fructose

Glycogen (correct)

Sucrose

Galactose

What process is known for flowering dependent on cold treatment?

Vernalization Signup and view all the answers

What is the primary purpose of Ti plasmids in the context of transgenic plants?

To allow the transfer of foreign genes into plant cells Signup and view all the answers

If the mean and median of a population are equal, what type of distribution is most likely observed?

Normal distribution Signup and view all the answers

What effect does opium have on the nervous system?

Stimulates the nervous system and causes hallucinations Signup and view all the answers

Where is glycogen primarily stored in the body?

In cytoplasm and mitochondria Signup and view all the answers

Which cranial nerve is responsible for regulating heart beat?

X Signup and view all the answers

Which statement correctly describes the total number of bones in the hind limb of a human?

There are 24 bones in the hind limb. Signup and view all the answers

What does a condition called anuria refer to?

Failure of kidney to form urine Signup and view all the answers

What distinguishes the dorsal surface of the earthworm?

Site of photoreceptors Signup and view all the answers

What is the role of thymine in RNA?

It is replaced by uracil Signup and view all the answers

Which environmental disaster occurred in 1986, creating significant hazards?

Bhopal gas tragedy in India Signup and view all the answers

In which stage of glucose oxidation is the maximum ATP produced?

Electron Transport Chain Signup and view all the answers

Which transgenic food crop might help solve the issue of night blindness?

Golden rice Signup and view all the answers

What does the explosive increase in the population of an insect species during the rainy season indicate?

Its population growth curve is of J-type Signup and view all the answers

What is true about the nucleocytoplasmic ratio during cleavage?

The size of the cells does not increase. Signup and view all the answers

Which of the following macromolecules is most diverse and found in the cell both physically and chemically?

Proteins Signup and view all the answers

Which statement accurately addresses modifications made by germline gene therapy?

The functional gene is incorporated into reproductive cells. Signup and view all the answers

What process is primarily described by the failure to form urine in the kidneys?

Excretion Signup and view all the answers

Which sequence is used to determine phylogeny?

DNA sequence Signup and view all the answers

What occurs in meiosis II?

Separation of chromatids Signup and view all the answers

Which chemical is commonly used for the artificial ripening of banana fruits?

Ethylene Signup and view all the answers

Study Notes

Biology Exam Questions and Answers

Genetically modified crops: Require human testing because they may cause allergies, alter genes, or release toxins.
Aquatic Reptiles: Are ureotelic over land.
Iris Function: Controls pupil size.
Aquatic Fern Biofertilizer: Azolla.
Standard ECG Representation: R (ventricular repolarization).
Hind Limb Bones (Humans): 30.
Nuclear Power Plant Accident (Worst): Russia in 1990.
Hazardous MIC Gas Accident: Bhopal in 1986.
Meiosis-II Function: Separates chromatids.
Phylogeny Determination: Using rRNA sequence.
ATP Production in Glucose Oxidation: Greatest amount during electron transport chain.
Auxin Movement: Basipetal and acropetal.
Epistatic Phenomena: One gene hiding another's effect.
Radioactive Thymidine Incorporation: Into euchromatin.
Psychotropic Drug Effects: Hashish alters perceptions and causes hallucinations.
Bird Flight Muscles Attachment: Keel of sternum.
Cleavage Cell Characteristics: Nucleocytoplasmic ratio remains unchanged.
Pyrenoids Function: Starch formation.
Germline Gene Therapy Effect: Heritable modifications to the genome.
Water Available to Plant Roots: Capillary water.
Organism Type Suppression: Known as biological control.
Deltoid Ridge Location: Humerus.
Mendelian Cross Factors: Allelomorphs.
Golgi Apparatus Absence: Bacteria and blue-green algae.
Mammalian Heart Development: Demonstrates biogenetic law.
Pectoral Girdle Part: Glenoid cavity.
RNA World Evidence: RNA as genetic material in some viruses.
Iris Location: Part of the choroid/uvula.
Desert Plant Characteristics: Generally succulent.
Kidney Failure and Urine Production: Anuria.
RNA Nucleotide Replacement: Uracil replaces thymine.
Transgenic Food Crop for Night Blindness: Golden rice.
Biological Research Organism: Escherichia coli.
Rice Yield Increase Biofertilizer: Mycorrhiza.
Malaria Life Cycle Stage in Mosquito: Sexual cycle.
Plant Genetic Engineering Bacteria: Agrobacterium.
Plant Food Reserve: Inulin and pectin.
Sperm Middle Piece Components: Mitochondria.
Organism to Select for Bioethanol: Zea mays (corn).
Nerve Impulse Direction in Afferent Fibers: Receptors to CNS.
Glycogen Polymerization: Glucose.
Normal Population Distribution: Distribution where mean and median are equal.
Correct Transgenic Animal Sequence: Micro-injection, Electroporation, Retroviral vectors, Transfection.
Plant Cold Treatment Effect: Vernalization.
Ti Plasmid Source for Transgenic Plants: Agrobacterium tumefaciens.
Plant Group with Spores and Embryo But No Vascular Tissue: Bryophyta.
Protein Synthesis Location (Animal Cells): Cytoplasm and ribosomes.

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Explore a variety of questions focused on key topics in biology, including genetics, physiology, and ecology. This quiz covers essential concepts such as genetically modified organisms, phylogeny, ATP production, and more. Test your knowledge and prepare for your upcoming exams in the biological sciences!