The translation of genes into proteins is a complex process involving many components. Some of the necessary components are RNA molecules of various types. Cellular genomes contain coding sequences for all the necessary RNA components as well as genes for proteins. Which of the following types of RNA molecule is/are part of the "machinery" of translation of the genetic code? a. mRNA
b. rRNA
c. siRNA
d. tRNA

Describe speciation of the galapagos island finches in terms of geographic isolation

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip.nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule.true/false