Which one of the following is correct about lysosomes
(A) It generates ATP by oxidation of food
(B) Contains hydrolases which are optimally active at acidic PH
(C) Double membrane bound structure
(D) A membranous structure mainly associated with protein synthesis

Which of the following is correct for carbohydrates? (a) They act as biofuels (b) They are reserve food materials (c ) They are constitunents of biomolecues, (d) They act as the chief structural material

Go through the following statements : (i) Lysosomes contain hydrolytic enzymes which are optimally active at the alka line pH. (ii) A number of proteins synthesised by ribosomes on the endoplasmic reticulum are modified in the cisternae of the Golgi apparatus before they are released from its cis face. (iii) Typically a mitochondrion has a diameter of 0.2-1.0 mu m and length of 1.0 - 4.1 mu m (iv) Elaioplasts store oils and fats. Find out the correct statements

Which one of the following figures will generate a cone when rotated about one of its straight edges? (a) An equilateral triangle (b) A sector of a circle (c) A segment of a circle (d) A right-angled triangle

Which one of the following structures is an organelle within an organelle " " Or Which of the following cell organelle lacks DNA and bounding membrane

Which one of the following fits the below description ? It is a single-celled organism that is a greenish colour and has a cell wall around its cell membrane. It has small infoldings of the cell membrane. It contains genetic material in the cytoplasm which is devoid of any envelope. It has ribosomes for protein synthesis.

Which of the following statements is correct? (a) Among the food materials such as groundnut, wheat egg and cow's milk, it is the groundnut which is the richest in protein. (b) Globular protein is present in blood, milk and eggs. (c ) Keratin is the protein in hair, hoof and nails (d) Proteins such as oxytocin, vasopressin, and insulin act as hormones

Which of the following is correct: (a) Cells of all living organisms have a nucleus. (b) Both animal and plant cells have a well defined cell wall. (c) In prokaryotes, there are no membrane bound organelles. (d) Cells are formed de novo from abiotic materials.