The part of the microscope that supports both the ocular lens and the revolving nosepiece is called the <u>head.</u>
The microscope is a device that is used to examine smaller-sized objects that can not be seen with bare eyes.
The most commonly used microscopic devices are the electron microscope and light microscope.
Due to its high resolving power and powerful lenses, it can see small objects of sizes ranging between 10^-3 millimeters and 0.2 micrometers.
Moreover, it is used to see objects at uni and multi-cellular level allowing the scientists to observe organelles such as mitochondria and nuclei in a cell.
If you need to learn more about microscopes click here:
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<span> There are so many different types that come to eat and as I watch them I notice that some of the finches look very much alike but are different breeds. You can look at the shape of a bird's body, wingspan, colors especially and markings and determine the type of bird, if it is native to your area or visiting, if it is male or female. I have a bird book I like to use, it's called, wild birds of north America. It has tons of color photos and info. If you want to draw lots of interesting birds, try a thistle feeder instead of mixed wild bird seed. This will draw in the finches and other colorful small birds that you don't see flying around that often.</span>
The correct answer is B. Prokaryotes do not have a nucleus.
Explanation:
In biology, the Prokaryotes along with the Eukorytopes are types of cells. In the case of the Prokaryotes these cells are found in bacteria and similar organisms different to Eukaryotes, Prokatyoes do not have a nucleus, lysosomes or Golgi complex. But they have cell walls which are only found in certain Eukorayotes cells and as most cells they Prokaryotes also have cytoplasm. This implies in the case presented the student should not have selected "has genetic material found within a nucleus" as a feature that identifies a cell as prokaryote as these do not have a nucleus and therefore the reason Mrs. Hines should mark the student's answer incorrect is Prokaryotes do not have a nucleus.
Answer:
Air moves into the lungs from atmosphere
Explanation:
As per the gas law, pressure of a gas is indirectly proportional to the volume of the gas. Thus, if volume increases pressure decreases.
Here, the volume of alveoli has increased due to which the pressure within the alveolar space reduces such that the atmospheric pressure outside alveoli becomes higher than the alveolar pressure within the alveoli. Due to this difference in pressure, the air gushes into the lungs.
Answer:
ATCGCGGGAA
Explanation:
The way I learned this was with the word "GCAT". G pairs with C and vise-versa and A pairs with T and vise-versa. This is how you know what the opposite chain of DNA will look like.
