hemoglobin is a protein that binds to oxygen. it is only produced by red blood cells and it allows blood to transport oxygen throughout the body.
what statement does this information best demonstrate?
a.
the proteins produced by cells have structures that are related to their function.
b.
proteins in specialized cells are the result of the expression of particular genes.
c.
specialized cells that are grouped together and perform similar functions are called tissues.
be
od.
proteins with similar functions to those produced in humans can be found in other species.

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

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Describe five factors that influence the value of fuel