Select the incorrect statement
(A) Inner nuclear membrane is smooth
(B) Outer nuclear membrane bears 70s ribosome
(C) Nucleolus is called ribosome factory
(D) Acrocentric chromosome is J-shaped during anaphase

The nucleus is a significant organelle found in the cell. Read the following statements about the nucleus and select the option that correctly determines the number of false statements. (i) The nuclear envelope consists of two parallel membranes having space between them called pericentriolar space. (ii) The outer membrane of the nucleus usually remains continuous with the Golgi apparatus. (iii) The nuclear matrix or the nucleoplasm contains nucleolus and chromatin. (iv) Larger and more numerous nucleoli are present in cells actively carrying out lipid synthesis

Select the incorrect statement with respect to the plasma membrane. (a) It is selective permeable. (b) It is elastic in nature. (c) It is not living (d) It is quasi fluid nature.

Read the following and select the incorrect statements: A. The placenta acts as a permanent endocrine tissue and produces several hormones. B. During pregnancy levels of cortisol, prolactin, thyroxine, and estrogen hormones also Increase several folds in maternal blood. C. The second meiotic division of secondary oocyte in females is unequal and results in the formation of a polar body. D. The secondary follicle transforms into a tertiary follicle which is characterized by a fluid - filled cavity called the antrum.

Dense fibrous complex lying adjacent to inner membrane of nuclear envelope is (A) Chromatin (B) Fibrous lamina (C) Nuclear lamina (D) Both B and C

Consider the following statements and select the correct option (A) The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles (B) ER helps in the transparent of substances, synthesis of proteins, lipoproteins and glycogen (C) Ribosomes are involved in protein synthesis (D) Mitochondria help in oxidative phosphorylation and generation of ATP

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.

Nuclear membrane and nucleoli are distinctly seen in (a) Prophase (b) Metaphase (c) Anaphase (d) Interphase

Read the following statements and select the correct option. Statement A: Polar molecules can move across the membrane by the process of simple diffusion along the concentration gradient. Statement B: The nuclear matrix or nucleoplasm contains nucleolus and chromatin.

Select correct statement w.r.t. Monera (a) All are autotrophic prokaryotes (b) All are chemoheterotrophs (c) Unicellular, colonial or filamentous organisms (d) Prokaryotes with 70 S ribosome and histonic DNA

Read the following statements and choose the correct statements. A. Cilia and flagella are covered with plasma membrane. B. Centrioles form the basal body of only cilia and not flagella. C. Approximately 2 m long thread of DNA is distributed among 46 pairs of chromosomes in a single human cell. D. Movement of proteins and RNA into or out of nucleus occurs through nuclear pores.