Biology Mixed Test - 1 (Medical Entrance)
Biology Mixed Test - 1
Questions
Which of the following pairs of scientist and discovery is incorrectly matched?
- Meischer - Nucleotides
- Holler et al - Structure of tRNA
- Nageli and Cramer - Cell membrane
- Robert Brown - Nucleus
Which of the following types of enzymes catalyses the reaction inolving the binding of two compounds with breaking up of pyrophosphates?
- Ligase
- Lyase
- Transferase
- Hydrolase
The role of the nucleus in regulating the phenotype of plant was discovered in
- maize
- Neurospora
- Acetabularia
- pea
Hypersecretion of thyroid hormones in human beings results in
- cretinism
- myxoedema
- simple goitre
- exophthalmic goitre
Which of the following is not a helminthic disease?
- Filariasis
- Ascariasis
- Enterobiasis
- Ring worm
Which of the following types of substrate brings about the removal of a functional group from a substrate?
- Ligases
- Lyases
- Transferases
- Isomerases
If the enzyme extract is subjected to magnetic field, it splits to two fractions each catalyzing the same reaction. These fractions are called
- isozymes
- allosteric enzymes
- multiple enzymes
- co-enzymes
Which of the following is an enzyme filled organelle?
- Lysosome
- Ribosomes
- Mesosomes
- Oxysomes
Which of the following is the smallest known cell?
- Mycoplasma
- Virus
- Yeast
- Bacteriophages
Which of the following types of leucoplast stores starch?
- Amyloplast
- Elaioplast
- Aleuroplast
- Chromoplast
Which of the following organelles acts as the site of translation?
- Mitochondria
- Ribosomes
- Peroxisomes
- Endoplasmic reticulums
Which of the following organelles acts as the site of transcription?
- Mitochondria
- Ribosome
- Peroxisome
- Nucleus
Which of the following organelles is concerned with the fatty acid metabolism?
- Mesosomes
- Glyoxysomes
- Peroxisomes
- Spherosomes
Which of the following is the main funtion of nucleus of a living cell?
- Synthesis of proteins
- Photosynthesis
- Respiration
- Control of cell activities
Which of the following groups has glycogen as its reserve food material?
- Algae
- Fungi
- Gymnosperms
- Bryophyta
What happens to the enzyme if it is heated to the boiling temperature?
- It gets activated.
- It gets inactivated.
- It gets denatured.
- It remains unaffected.
Which of the following techniques is used for tracing metabolic processes using isotopes?
- Autoradiography
- Chromatography
- Ultra-centrifugation
- Electrophoresis
A diagnosis test called Widal test is used to diagnose
- AIDS
- leukemia
- tuberculosis
- typhoid
Which of the following organelles plays an important role in cytokinesis in plant cells?
- Lysosomes
- Chloroplast
- Endoplasmic reticulum
- Golgi complex
Which of the following materials is abundantly found in the middle lamella of the plant cell?
- Lignin
- Cellulose
- Pectin
- Suberin
Which of the following structures in a plant cell is/are enucleated?
- Xylem parenchyma
- Comapanion cells
- Seive tube elements
- Phloem parenchyma
Fret channels are present in which of the following organelles?
- Endoplasmic reticulum (ER)
- Mitochondria
- Golgi bodies
- Chloroplasts
Which of the following types of ribosomes is present in the mitochondria and plastids?
- 80s type
- 70s type
- 50s type
- 40s type
What is the photosynthetic unit of chloroplast called?
- Quantosomes
- Oxysomes
- Mesosomes
- Spherosomes
Where is anthocyanin present in the cell?
- Chloroplast
- Chromoplast
- Leucoplast
- Vacuole