Choose the correct and incorrect statements about viruses
A. These were found to be smaller than bacteria because they passed through bacteria-proof filters.
B. They are inert outside their specific host cell.
C.No virus contains both RNA and DNA.
D. The protein coat called capsid is made of small units called capsomeres.
E. These capsomeres are arranged in helical and polyhedral geometric forms

Choose the wrong statement regarding bacterial cell A. Glycocalyx is the outer most envlope in bacteria B. The glycocalyx could be a loose sheath called capsule C. The glycocalyx may be thick and tough called slime layer D. A special structure formed by the plasma membrane is called mesosome E. Small bristle like fibers sprouting out of the cell are called fimbriae

Read the following statements and find out the incorrect statements. a. Each testicular lobule contains one to three highly coiled seminiferous tubules in which sperm are produced. b. Each seminiferous tubule is lined on its inside by two types of cells called Leydig cells and Sertoli cells. c. The region outside the seminiferous tubules called interstitial space, contain small blood vessels and male germ cells (spermatogonia) which lead to sperm formation. d. In testis immunologically component cells are also present. e. The seminiferous tubules of the testis open into the rete testis through vasa efferentia.

In the first biological applicativon of bucky ball , chemists at the University of Califorminaat San F Francisoc and Santa Barbra made a discovery in 1993 that could help I designing drugs to rtreat AIDS . The human immunodeficienrcy virus (HIV) that causes AIES reproduces by syntheising a long protein chain , which is cut into smaller segments by an enzymecalled HiV-proteases . ONe way to stop AIDS , then might be to inacivate the enzyme. when the chemists reacted a water-soluble derivative of bucky ball with HIV-protease , they found that itbinds to the portion of th enzyme that would ordinarily clareve the repreouctive protein , preventing the HIV virus from reproducing . Consequently the virus could no bnolgre infect the human cells they had frown in the laboratory . The buycky ball compound itself is not a suitable drug for use against AIDS because of potential side effects and delivery difficaultes , but it does provide a model for the development of such drugs Consider following statements about bucky ball : A , It is also called fullerene B: It is also called Buckministerfullerene C: Bucky tubes (made of fullerenes ) are several times stronger than stel whnires D: Bucky ball is a plastic polymer Select correct statement (s) :

read the following statements w.r.t tobacco mosaic virus. (a) it is rod like elongated virus which is 3000 A long and 180 A in diameter. (b) it consists of 2130 capsomeres, arranged helically to form the capsid. (c) its genetic material is ds RNA (d) its RNA consists of 6400 nucleotides (e) Nucleotide Capsomeres ratio is 3: 1. select the correct option

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 both cilia as well as 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.