Lumen is the space (A) Inside chloroplast having 70 s ribosomes (B) Enclosed by membrane of thylakoid (C) In between two membranes of chloroplast (D) Inside the Mitochondria

Double membrane is absent in (a) nucleus (b) mitochondria (c ) chloroplast (d) lysosomes

Read the following statements and identify the correct option given I. In prokaryotic cell, the nuclear membrane , chloroplasts, mitochondria , microtubules and different kinds of pili are absent , II. In eukaryotic cell, the nuclear membranes, chloroplasts, mitochondria and pili are present . III. In prokaryotic cell, the ribosomes are of 70 'S' type and in mitochondria of eukaryotic animal cell, the ribosomes are of 80 'S' type

Mantle cavity in molluscs is the space (A) enclosed within the visceral hump (B) between the mantle and the shell (C) between the gut and the body wall (D) between the hump and the mantle

Which is correct option amongst the following statements ? a. Nuclear membrane, chloroplasts, mitochondria, microtubules and pili are absent in prokaryotic cells b. Nuclear membrane, chloroplasts, mitochondria, microtubules and pili are present in eukaryotic cells c. Ribosomes are 70S in prokaryotic cells, chloroplasts and mitochondria. They are 80S in animal cells.

The space enclosed between two paralllel membranes of nucleus is known as ______ space

ATP synthesis in chloroplast and mithochondria is due to proton gradient across the membrane. Select corrct statement w.r.t formation in chloroplast (a) Proton accumulates in lumen of thylakiod (b) Splitting of water occures on inner side of membrane (c) proton redutase is located on stroma side of chloroplast (d) NADP reductase is located on stroma side of membrane

In mammals, pleural membranes cover the lunge as well as insides of the rib cage. The pleural fluid in between the two membranes-

Site of substrate level photosphorylation in plant cell (A) Chloroplast,Mitochondrial cristae (B) Cytoplasm,Perimitochondrial space (C)Stroma of chloroplast and Cytoplasm (D) Cytosol,Mitochondrial matrix

Consider the following statements A. The chloroplast pigments are fat soluble. B. All the pigments of chloroplast are located in the thylakoid membranes. Which of the statements given above is/are correct?