Laboratory Instruments

Ribosomes in bacterial cells differ from those in the cytoplasm of eukaryotic cells. When centrifuged at high speed, the eukaryotic cell ribosomes sediment more rapidly than bacterial ribsomes. Explain what this tells you about the difference between bacterial and eukaryotic ribosomes???????????

Tags: Bacterial, Biology, Cell, Eukaryotic, Help, Ribosomes

a. The systole is the contraction phase of the heart beat where the pressure on the walls of the blood vessels is highest. b. The diastole is the relaxation phase of the heart beat where the pressure on the walls of the blood vessels is lowest. c. A centrifuged sample of blood would yield a [...]

Tags: Except..., Following, Help, True

A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum and collect at the bottom of the [...]

Tags: Help, Please

Ok, there are three problems: 1) A centrifuge accelerates from rest to 11,000 rpm in 200 s. Through how many revolutions did it turn in this time? 2) A wheel 75.0 cm in diameter accelerates uniformly from 240 rpm to 350 rpm in 5.5 s. How far will a point on the edge of the [...]

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Which of the following correctly lists the order in which cellular components will be found in the pellet when homogenized cells are treated with increasingly rapid spins in a centrifuge? A) ribosomes, nucleus, mitochondria B) chloroplasts, ribosomes, vacuoles C) nucleus, ribosomes, chloroplasts D) vacuoles, ribosomes, nucleus E) nucleus, mitochondria, ribosomes Thanks! ^^

Tags: Biology, Help, Please

5 drops of aluminum nitrate is placed in a centrifuge tube. 6 drops of aqueous ammonia solution is then added. A precipitate forms. Explain what happened. What is the chemical identity of the precipitate? (hint: What IONIC species arise when NH3 is added to water? The precipitate forms because Al(3+) has combined with an anion…) [...]

Tags: Equation, Help, Ionic

A centrifuge in a medical laboratory rotates at an angular speed of 3450 rev/min. When switched off, it rotates through 46.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge. rad/s2

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how would i use the following words in a compound, complex, or a compound/complex sentence? (one word per sentence) refracted marionette mausoleum tallow olfactory trajectory objectivity Tower of Babel abyss centrifuge any help is greatly appriciated! thanx! :]

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a centrifuge used to train jet fighter 5 designed to simulate very fast turns. If the trainees are rotated in a horizontal circle of radius 50 m and experience an experience an acceleration equivalent to 5 times the force of gravity (5ag) How fast is the trainees rotating?

Tags: Explain, Help, Physics

How fast (in rpm) must a centrifuge rotate if a particle 6.00 cm from the axis of rotation is to experience an acceleration of 75,000 g’s?

Tags: Circular, Help, Motion, Please