BIOLOGY HIGH SCHOOL

What caused Earth to develop layers as it cooled?differences in density
escape of gases
its magnetic field
its speed of rotation

Answers

Answer 1
Answer: The answer is difference in density. We know that the high central density suggests the earth must be rich in nickel and iron and that much of the core must be liquid. This lower-density air then rises and is replaced by cooler, higher-density air. The result is atmospheric circulation that drives the weather and climate through redistribution of thermal energy. 

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1. It is a characteristic of aguayo cloth.a. a floral pattern b. a striped pattern c. blue and purple hues 2. ¿De qué color es el azúcar? a. azul b. blanco c. rojo d. morado
Which equation correctly shows the reactants and products of photosynthesis? A C6H12O6 + 6CO2 --> 6O2 + 6H2O B C6H10O6 + 6O2 --> 6CO2 + 6H2O C 6O2 + 6H2O --> C6H10O6 + 6CO2 D 6CO2 + 6H2O --> C6H12O6 + 6O2
If you cannot directly test your hypothesis you can use a…(Select all that apply) A. Model B. Simulation C. Movie D. Survey

Using what you've learned about the nucleus, how could you identify it by looking at a cellthrough a microscope.

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It may be the largest organelle in the cell, filled with dark-colored chromatin. You won't be able to see the DNA with a school microscope, but you can see the chromatin, which will look like Ramen noodles.

Hormones control homeostasis in

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Hormones assist in aiding and maintaining the homeostatic state of the organism by constantly balancing out necessary and unnecessary elements. Hormones have different types in humans we have the exocrine glands and the endocrine glands. Most of these glands are controlled by their gland organ and also the master gland, pituitary gland.  

In order to protect off of aquifers near landfills material is placed under the soil to prevent pollution which property must the protective material process

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Answer: Permeability. 

This property allows liquids to pass through the material but also filters out pieces of garbage and other pollutants. In aquifers, permeable rocks or synthesized permeable material are used so that trash, or clay will not leak into the groundwater. 

The answer is impermeability. The protective materials prevent the leakage and seepage of contaminated water (such as those of battery acid and household cleaners), by gravity, to the water table in the aquifer. If this is not done, contamination of groundwater may result and cause a public health disaster when the contaminated water is used for consumption when it reaches water wells.

What are 4 biotic facts about the tundra??

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Biotic factors are grass and trees, animals, plants, insects, humans, dirt, air and food.
Cold, dry, frozen soil, lots of sand

What type of scientist studies how bacteria are affected by antibiotics

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 The type of scientist that studies how bacteria are effected by antibiotics are called micro biologist
 

During transcription in eukaryotes, a type of RNA polymerase called RNA polymerase II moves along the template strand of the DNA in the 3'→5' direction. However, for any given gene, either strand of the double-stranded DNA may function as the template strand. Which of the following initially determines which DNA strand is the template strand, and therefore in which direction RNA polymerase II moves along the DNA?A. the location of specific proteins (transcription factors) that bind to the DNA
B. the specific sequence of bases along the DNA strands
C. the location along the chromosome where the double-stranded DNA unwinds
D. the position of the gene’s promoter on the chromosome
E. which of the two strands of DNA carries the RNA primer

Answers

Answer:

D. the position of the gene’s promoter on the chromosome

Explanation:

Transcription is the first stage of gene expression or protein synthesis. It is the process of synthesizing a complementary strand of mRNA from a DNA template. This synthesis of complementary RNA strand I carried out by an enzyme called RNA polymerase. RNA polymerase does this by adding complementary nucleotides to the growing RNA strand (3'-5') based on the nucleotide it reads on the 5'-3' of the DNA template.

Before transcription can start, the RNA polymerase needs to recognize and bind to a specific region of the gene called PROMOTER. This signals initiation of the transcription process and also tells the polymerase which unwinded strand of DNA will serve as the template strand and hence, in what direction nucleotides will be added.

N.B: Only one of the separated DNA strands will serve as a template for the synthesis of RNA
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