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3 years ago

According to Percy, why are the dead hard to look at? Page 301

Biology

2 answers:

frosja888 [35]3 years ago

8 0

Because they are disgusting corpses and remind him of a traumatic event.

DanielleElmas [232]3 years ago

3 0

Answer:

"Their faces shimmer. They all look slightly angry or confused.

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Carbon dioxide in the atmosphere traps heat. Scientists are concerned that too much carbon dioxide is being released into the ai

WITCHER [35]

Pollution control in the air

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3 years ago

New genes can be added to or replace the genes on a bacterial plasmid in a process known as __.

allochka39001 [22]

Answer:

Recombinant plasmid

Explanation:

Researchers can insert DNA fragments or genes into a plasmid vector, creating a so-called recombinant plasmid.

This plasmid can be introduced into a bacterium by way of the process called transformation.

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3 years ago

What are the three possible outcomes for species when rapid environmental changes occur

Montano1993 [528]

Rapid environmental changes can cause:

1) Species can become vulnerable to extinction.

2) A decrease or increase of populations.

3) Diversity of species.

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3 years ago

Read 2 more answers

Which of the following is NOT the result of a mutation in the DNA sequence of an organism?

Mama L [17]

DNA is copied during mitosis and when the two resulting copies of DNA are compared they are found to contain the same order of nucleotides is not the result of mutation in the DNA sequence of an organism.

Explanation:

Mutation is the process

It is caused by certain chemicals called mutagens or by environmental factors.

In mutation the nucleotide get change which eventually changes the protein product.

In mutation purine base gets mutated to purine base and pyrimidine base gets mutated to pyrimidine only.

A single change in nucleotide is called point mutation and the effect occurring because of it is called frame shift mutations.

In S phase there are checkpoints which ensure that DNA replication is accurate and when mitosis follows it equal distribution of DNA takes place between the two daughter cells hence no mutation will takes place.

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3 years ago

Biology Photosynthesis questions

Mazyrski [523]

I cannot do the part A task...... I can do the chart (: annddd the questions below..

Glucose: Glucose is a sugar made from sunlight, with the molecular formula C6H12O6.

chloryphll: The energy that is absorbed of the photon is transferred to an electron in a process called charge separation.

ATP: is a product of the first stage of photosynthesis, and it provides energy for the second stage. energy transfer; that is, ATP is able to store and transport chemical energy within cells.

Carbon dioxide: is involved in the production of refrigeration systems, welding systems, water treatment processes

chloroplast: contains the molecule chlorophyll, which absorbs sunlight for photosynthesis.

stomoata: control the flow of gases in and out of leaves.

Thylakoid: A thylakoid is a membrane-bound compartment inside chloroplasts and cyanobacteria. They are the site of the light-dependent reactions of photosynthesis. surrounded by a lunon.

stroma; involved in the Calvin Cycle – carbon fixation, reduction and regeneration. the stroma the supportive tissue of an epithelial organ, tumor, gonad, etc.

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Q2: oxygenic photosynthesis and anoxygenic photosynthesis.

Q3: The general principles of anoxygenic and oxygenic photosynthesis are very similar, but oxygenic photosynthesis is the most common and is seen in plants, algae and cyanobacteria.

Q4: water, light and carbon dioxide, while the products are oxygen and sugars.

Q5: carbon dioxide + electron donor + light energy ==> carbohydrate + oxidized electron donor + water

CO2 + 2H2A + photons ==> [CH2O] + 2A + H2O

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3 years ago