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2 years ago

Section 10.3 How does a cell control the process of cell division?

1 answer:

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In cell division, the cell that is dividing is called the "parent" cell. Cells regulate their division by communicating with each other using chemical signals from special proteins called cyclins. These signals act like switches to tell cells when to start dividing and later when to stop dividing.

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Which microscope is used to observe a specimen that emits light when illuminated with an ultraviolet light?

jonny [76]

Answer: Fluorescence microscope

Explanation:

The basic function of a fluorescence microscope is to irradiate the specimen with a desired and specific band of wavelengths. A fluorescence microscope uses a mercury or xenon lamp to produce ultraviolet light. The light comes into the microscope and hits a dichroic mirror. The dichroic mirror reflects the ultraviolet light up to the specimen. The ultraviolet light excites fluorescence within molecules in the specimen. The objective lens collects the fluorescent-wavelength light produced. This fluorescent light passes through the dichroic mirror and a barrier filter, making it to the eyepiece to form the image.

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3 years ago

What is not considered biomass? a Water b Corn C sugar cane D wood

Vitek1552 [10]

The correct answer is A. water. That's because water's chemical composition is such that it can't be decomposed and turned into a fuel. Unlike Corn, sugar cane, and wood, it can't be used to power machines. The other ones are organic and can be used as biofuel, while wood can even be used in the form of coal as coal is nothing else than wood.I hope that my answer is helpful! Let me know if you need something more :)

8 0

2 years ago

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What is the 95% CI for data set 2?

vesna_86 [32]

Answer: 20 ± 11.32

Explanation: Confidence Interval (CI) is an interval of values where there is a % certainty the true mean value lies in. For example, a 95% CI means there is a 95% certainty the true mean value lies in the interval.

For the data set 2, z-value for 95% confidence interval is z = 1.96

Formula to calculate CI is

x ± $z\frac{s}{\sqrt{n} }$

where

x is mean

z is z-value

s is standard deviation

n is the sample number

Then:

20 ± $1.96\frac{10}{\sqrt{3} }$

20 ± $1.96\frac{10}{1.7320}$

20 ± $\frac{19.6}{1.7320}$

20 ± 11.32

The 95% CI is 20 ± 11.32, which means there is a 95% certainty the true value is between 8.68 and 31.32.

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3 years ago

. Which summarizes the genetic research completed by the Austrian monk Gregor Mendel?

Bond [772]

Answer:

C. Mendel hypothesized that the traits of pea plant offspring are inherited.

Explanation:

A. After years of research, Mendel identified the genes for flower colors. False. During Mendel's research, genes were not yet discovered.

B. Mendel bred various dog breeds to discover the science of genetics. False. Mendel worked with pea plants, not dogs.

C. Mendel hypothesized that the traits of pea plant offspring are inherited. True. Mendel uncovered the main principles of the inheritance of simple traits.

D. Using Punnett squares, Mendel developed the principles of genetics. False. The Punnett square was invented by Reginald C. Punnett,

6 0

2 years ago

Climate and weather (see image)

NikAS [45]

Answer:Latitude and ocean currents

4 0

2 years ago

Read 2 more answers