PHOTO-SYSTEMS Photosynthetic pigments are organized into clusters called photo-systems. These photo-systems absorb and utilize the solar energy efficiently in the thylakoid membranes. Each photo-system is composed of two parts. I.…
Describe different structures of plasma membrane. Describe fluid mosaic membrane. Describe different movements across plasma membrane. Describe physio-chemical nature of cytoplasm. SHORT QUESTIONS Give chemical composition of plasma membrane.…
Light is electromagnetic energy. Electrochemical energy travels in the form of waves. The distance between the crest of the electromagnetic waves is called wavelength. The entire range of radiations is…
TERMS DEFINITIONS Homeostasis The maintenance of a constant internal environment despite fluctuations in the external environment is called homoeo stasis. Diffusion The movement of molecules from the area of higher…
Photosynthesis (photo-light, synthesis-putting together) may be defined as the process in whieh the green plants synthesize carbohydrates from carbon dioxide and water, using the energy of sunlight. 673 K cal…
The living content of the protoplasm between plasma membrane and nucleus is called cytoplasm. Living content of eukaryotes is divided in to nucleus and cytoplasm. These living contents (nticlebs and…
Multiple Choice Questions (MCQs) Which of the followings enzymes is not protein? (a) Diastase (b) Pepsin (c) Ribozymes (d) Trypsin Key and lock model was proposed by: (a) Kosh land …
The plasma membrane surrounds the cell. Chemically plasma membrane is composed of: (a) Protein: 60 to 80% (b) Phospholipids: 20 to 40% (e) Cholesterol in small amount (d) Carbohydiutes in…
Multiple Choice Questions (MCQs) I. Specie name is mostly: (a) Noun (b) Adjective (c) Article (d) None 2. The person who first describes a new species and gives it a…
MODEL SUBJECTIVE QUESTION* What are enzymes? Discuss their nature. Write note on cofactors and coenzymes. Give classification and nomenclature of enzymes. Describe properties of enzymes.SHORT QUESTIONS Define enzymes. Ans: An…
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