Biology, 14.02.2022 02:40, davelopez979

In the table below, indicate what happens to each parameter (circle "increases" or "decreases") as you rotate through the objective lenses starting with scanning and ending with oil immersion)
Magnification
increases
decreases
Resolution
increases
decreases
Working
Distance
increases
decreases
Depth
of Field
increases
decreases
Field
of View
increases
decreases
Quality modern microscopes have parfocal objective lenses (having focal planes in the same
position). For the user, this means that as the objective lenses are changed, the specimen remains in
focus. In reality, even the most expensive microscopes do not have perfectly parfocal lenses, so a
slight adjustment in the fine focus is normally required as the objectives are changed. To rotate the
objective lenses, turn the nosepiece. Do not grasp and turn the lens as this causes them to loosen
and become less parfocal, more susceptible to vibration, and likely to fall off and become damaged.
Should the stage be lowered to prevent the objective lens from hitting the slide when you change
to the next higher-powered objective? Why or why not?

Answers: 1

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answered: Guest

the areas around the equator

answered: Guest

Idon't know how to do this but maybe ask your mom or dad

answered: Guest

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.

answered: Guest

Proteins are the workhorses of the cell, controlling virtually every reaction within as well as providing structure and serving as signals to other cells. proteins are long chains of amino acids , and the exact sequence of the amino acids determines the final structure and function of the protein. instructions for that sequence are encoded in genes . to make a particular protein, a messenger ribonucleic acid (mrna) copy is made from the gene (in the process called transcription ), and the mrna is transported to the ribosome . protein synthesis, also called translation , begins when the two ribosomal subunits link onto the mrna. this step, called initiation, is followed by elongation, in which successive amino acids are added to the growing chain, brought in by transfer rnas (trnas). in this step, the ribosome reads the nucleotides of mrna three by three, in units called codons , and matches each to three nucleotides on the trna, called the anticodon. finally, during termination, the ribosome unbinds from the mrna, and the amino acid chain goes on to be processed and folded to make the final, functional protein