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bagirrra123 [75]
3 years ago
8

If you turn the fine adjustment knob slowly to move the objective up or down, what happens to the image you are viewing?

Biology
1 answer:
notsponge [240]3 years ago
4 0
It gets more or less focused by very small increments 
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Which stage of the cell cycle involves the division of the cytoplasm?
Aloiza [94]

Answer:

Cytokinesis

Explanation:

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3 years ago
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Greg wants to build a tree house. He wants the house to last for a long time and to not be broken down by rain, snow, and wind.
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Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.

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Some have speculated that the origin of life occurred at geothermal vents. amino acids can form there. compared to the amino aci
cluponka [151]

There are a number of amino acids that have formed under certain environmental conditions if the required elements are present and the energy conditions ar compatible with chemical assembly. These conditions have also allegedly formed amino acids on meteors, asteroids and comets.


But, amino acids are a very minor component of more complex biochemical assemblies required for life. Pentose sugars are also required, which form under different environmental conditions than amino acids. More importantly, only left-handed homochiral amino acids and right-handed homochiral sugars can form functioning biochemical assemblies that are viable in an organism. But, natural conditions, like hydrothermal vents only produce racemic versions of sugars and acids, meaning they are always approx. 50% left and right handed. This is fatal to forming viable biochemical assemblies.


Further, it is not possible for all of the 20+ homochiral amino acids needed for a living organism to form naturally. The only ones found have been the simpler amino acids. Also, the 4 critical nucleotide amino acids, C, G, A, T, do not form naturally, are not homochiral, nor in the right proportions.


The geo/hydrothermal vent conjecture is nonsensical. These are open systems, susceptible to currents, mineral contamination, salinity, ph, and temperature, making them a totally unacceptable environment for the precise and exact placement of elements to assemble to form life.

3 0
3 years ago
Lysosomes can be compared to the recycling and garbage centers of a city. How can this comparison be justified?
Ivan
I think the correct answer from the choices listed above is the second option. Lysosomes can be compared to the recycling and garbage centers of a city. This can be justified since they <span>digest excess or worn out organelles, food particles, and engulfed viruses or bacteria.</span>
6 0
3 years ago
Why can’t food chains go on forever?
bearhunter [10]

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Because at some point in that food chain, the energy consumption has it's limit, and the predator will not have anything to hunt it. There is a limited amount of energy in a food chain that can go around, and once you reach the predator, that energy doesn't quite run out but it hits that limit where the chain has to repeat itself.

Explanation:

7 0
3 years ago
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