BIOLOGY HIGH SCHOOL

Which type of pollution includes CFCs and smog? Air, land, water or volcanic

Answers

Answer 1
Answer:

Answer: Air pollution.


Air pollution occurs when harmful substances are introduced into the atmosphere. These substances majorly exist in two forms i.e solid ( particulate matter in air) and gaseous form.


CFCs (Chlorofluorocarbons) are compound consisting of Chlorine, fluorine, and carbon atoms. They are released in the atmosphere through aerosol sprays, air conditioners, refrigerators etc. Due to longer lifespan in the stratosphere, they can cause damage to the ozone layer thereby reducing earth's protection from harmful UV radiation. Also, they have warming effects which may cause global warming.



Smog is primarily named for the mixture of smoke and fog in the air. It is a blackish fog formed in the atmosphere mainly due to the reaction of various gases with dust and water vapors. it causes breathing difficulty and other harmful consequences.
Answer 2
Answer: Air pollution
hope this helps :)

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What is a benefit of genetic engineering?A. Does not require any technology
B. Supported by long term research
C. No controversy surrounding its use
D. Can produce non naturally occuring traits

Answers

Answer: Supported by long term research

One of the many benefits of genetic engineering is that it is being supported by long term research which means this area of knowledge has been thoroughly examined and experimented. There are also inevitable minor issues regarding genetic engineering however, it is not big enough to create doubts on what it can do. 

The physical traits of an individual are inherited through information stored ____ in the ______.

Answers

the actual answer is

Chemically in the DNA

im 100% sure

Answer:

Chemically in The DNA

Explanation:

Which gases contribute to the greenhouse effect?

Answers

gases which contribute to the greenhouse effect are Carbon dioxide, methane, ozone and nitrous oxide.
But the most common gases know are Carbon dioxide and Methane.

B  is the correct answer which is carbon dioxide and methane

A cell's digestive enzymes are enclosed in a membrane bound organelle. How can these molecules function of a plasma membrane

Answers

Answer:

A cell digestive enzymes are enclosed in a membrane bound organelles known as Lysosomes. Lysosome contains about 50 different types of enzymes which helping in breakdown of different types of biological molecules such as Protein, carbohydrates, nucleic acid and lipids.

Cells transporting the material into lysosome where digestive enzymes are present. Now the molecules are digested by enzymes after that these digested molecules are going back to the cytosol for use by the cell.

Enzymes which are present in lysosome require acidic environment to function in proper manner.
The membrane bound organelle you refer to is the lysosome. The lysosome fuses with a vacuole where it digest the contents.

What is the benefit of using a shortcut in a reaction between two chemicals ?

Answers

Answer:

To yield more output

Explanation:

The shortcuts in a chemical reaction are used to yield the final output by following a short route rather than the chemically defined long process of production thereby yielding final chemical product in higher amount as the production would become faster.

For example –  

If the chemical process in photorespiration is replaced with shortcuts, the chemical products can be recycled very easily at one location instead of following the natural path of processing.  
A reaction with a shortcut would yield more chemical output

The following DNA fragment was isolated from the beginning of a gene. G G G A T G C G G A A A G T C C A A
C C C T A C G C C T T T C A G G T T


Determine which strand is transcribed, indicate the polarity of the two DNA strands, and then give the sequence of bases in the resulting mRNA and its polarity.

Answers

A strand that is transcribed is called a template strand, the other one is called a coding strand. The template strand is in 3'-5' direction, and the coding strand is in 5'-3' direction. mRNA is transcribed from 3'-5' template DNA strand, so it is in 5' to 3' direction. The first codon of mRNA is called start codon and usually it is AUG.

Knowing this, we can answer the questions:

The transcribed strand must contain three nucleotide sequence complementary to AUG codon. According to the base pairing rules, it must be TAC. The strand that contains TAC, and, thus, is transcribed is
C C C T A C G C C T T T C A G G T T.
This template strand is in 3'-5' direction and the other one is 5'-3'.
mRNA transcription begins from the DNA sequence complementary to AUG codon:
DNA sequence:    3' C C C T A  C G C C T T  T C A G G T T 5'
mRNA sequence:         5'  A U G C G G A A A G U C C A A 3'
mRNA sequence is in 5'-3' direction.
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