A biologist wants ipecifically to examine the surfaces of different types of cells in kidney tubules be distinguished by external shape, size, and 3-D The cells in question can of small mammals characteriatics Which of the following would be the optimum method for her study? A) light microscopy of living unstained material B) cell fractionation C) transmission electron microscopy D) light microscepy using stains specific to kidney furction E) scanning electron microscopy

E) scanning electron microscopy

Explanation:

A biologist who was studying kidney tubules in small mammals wants to specifically examine the juxtaposition of different types of cells in these structures. The cells in question can be distinguished by external shape, size, and 3-dimensional characteristics using a Scanning electron microscopy.

Scanning electron microscopy (SEM) is used to examine the ultrastructural morphology of the cells of the kidney tubules. The Material for study is isolated and fixed by vascular perfusion. SEM is a form of electron microscope that gives pictorial view of a sample using a focused beam of electrons to scan the sample to reveal the surface topography and constituents of the sample.

SEM can produce resolution that is more than 1 nanometer.

Specimens are viewed in high vacuum in conventional SEM, or in low vacuum or wet situations in different pressure or environmental SEM, and at a broad set of cryogenic or increased temperatures with specialized tools.

Advantages of a Scanning Electron Microscope are its broad-array of uses, the well structured three-dimensional and topographical imaging or pictorial representation plus the varying information assembled from seperate detectors.

i am going to guess that it is co2.

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.