BIOLOGY HIGH SCHOOL

Do chromosomes duplicate before cell division or after?

Answers

Answer 1
Answer: Chromosomes replicate before cell division.
Answer 2
Answer: They duplicate before , I think

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A controlled experiment is the testing of a hypothesis in duplicate with only one factor being different. True. False.

Answers

A controlled experiment is a type of experiment where we're testing one hypothesis in duplicate and we have only one different factor. This indeed is true. An example of an uncontrolled experiment would be where we would have many different types of variables which would possibly affect the result of our experiment for example. 

Answer:

true

Explanation:

What is the role of greenhouse gases in the atmosphere

Answers

Greenhouse gases absorb heat energy from the sun and re radiate it back to Earths surface and keep the earths temperature at a constant 15 degrees Celsius, which is 30 degrees warmer than if they were absent. This is a warm enough mean temperature to sustain life, known as the greenhouse effect. However, the enhanced greenhouse effect has been caused by human activity, such as coal burning for fuel, and has lead to a rise in the amount of these greenhouse gases in the atmosphere. This absorbs more of this heat energy, thus leading to a gradual global warming.

Answer:

A. they trap some of the  suns heat energy in the atmoaphere.

Explanation:

Over time, the climate of a region becomes cooler. How will this most likely affect the species living in that region?.

Answers

Answer:

Some species that already have or that developed cold-weather adaptions through natural selection will survive, while species without cold-weather adaptations may go extinct.

Explanation:

That was the answer in study island :/
will, some of them will died because they will not be able to to adapt to the cold. Some might even survive, and adapt to that new climate, this is called natural selection.

The six kingdoms of life include bacteria that have cell walls with peptidoglycan, bacteria that have cell walls without peptidoglycan, protists, fungi, animals, and

Answers

I think you have missed the Plant kingdom.
Bacteria with cell walls
Bacteria without cell walls
Protists
Fungi
Animals
Plants

The pictures i have attached might help you.

A scientist modified the structure of a promoter region of a gene. What could be its effect on transcription and translation?A. RNA polymerase no longer binds to the DNA, so DNA will be directly translated into protein.

B. RNA polymerase will now bind to the coding region of the gene and carry out transcription.

C. RNA polymerase may not be able to bind to the DNA, so transcription will not occur

Answers

A scientist modified the structure of a promoter region of a gene. its effect on transcription and translation is that the RNA polymerase cannot bind on the promoter region, therefore no transcription will take place. As a result there will be no protein translation.


Answer: C) RNA polymerase may not be able to bind to the DNA, so transcription will not occur.


I hope it helps, Regards.

What separates living organisms with nonlivng organisms?

Answers

Living things are made of cells. 
Living things obtain and use energy. 

Living things grow and develop. 

Living things reproduce. 

Living things respond to their environment. 

Living things adapt to their environment. 

non living things cant do these thing
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