Answer: Light Refraction
Explanation:
Light rays travel in straight lines. When they strike an opaque surface, the rays bounce, and light is reflected back to your eye so that you see an image. When light strikes a transparent object, some of the light passes through. If that light strikes the object straight on, it continues to travel in a straight line. If the light enters the transparent object at an angle, though, it changes direction, bending.This bending of light is called refraction. Refraction occurs because light entering an object slows down. When it enters at an angle, one side of the light ray enters before the other, slowing down first.Looking from above, an object under water appears larger than it does in air. It's not that the image the light gave our eyes is bigger. It's that the image is actually closer to our eyes, since the light is not passing straight down, but is instead bending relative to the water's surface. Light passing straight down would be perpendicular to the water's surface, like the vertical line on the letter T.
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Answer:
Viruses are tinier than bacteria. All viruses have is a protein coat and a core of genetic material, either RNA or DNA. Unlike bacteria, viruses can't survive without a host. They can only reproduce by attaching themselves to cells.
The decrease of predators would make the elk population thrive, because there would be nothing to hunt them down. And with an increase of food, the elks would have enough to eat therefore the elks would not die from hunger.
<span>3)Add iodine (1 min)
4)acid/alcohol wash (1 min)
5)Flood with safranine (1min)
6)Air dry and examine.
These times are for clinical microbiology and experimental methods employ optimal and more precise times (but overall its pretty close).
Down side of this method is that you must smear bacteria onto the slide and fix it by heating the underside of the slide with a bunsen burner. if they are pink then you have gram negative (Gram's stain didnt stick) if its purple then its gram positive(Gram's stain did stick) This is due to the peptidoglycan layers. Gram negative bacteria have only a thin layer of peptidoglycan as part of the cell membrane/wall where Gram positive have a very think peptidoglycan layer.</span>Source(s):<span>Medical Microbiology</span>
Answer:
Genetic information is bundled into packages of <u>DNA</u> known as <u>chromosomes.</u>
Explanation:
DNA is the genetic material. It's how we pass down traits to our offspring. It's the cell's instructions for how to build.
Chromosomes are the, well, packages of DNA. They become visible in meiosis. They basically look like little Xs. Humans normally have 23 of these bundles that determine who we are.
