BIOLOGY HIGH SCHOOL

Which statement best describes a human influence on the biogeochemical cycles?A. increased eutrophication caused by high levels of nitrogen and phosphorous
B. increased nitrates available due to inaccurate methods of denitrification
C. increased global warming due to alternative energy sources
D. increased amount of water that is available to freshwater ecosystems

Answers

Answer 1
Answer: The statement that best describes a human influence on the biogeochemical cycles is A) increased eutrophication caused by high levels of nitrogen and phosphorous. 
Answer 2
Answer:

The correct answer is A.

An increase in levels of nitrogen and phosphorus can cause eutrophication, which often leads to algal and phytoplankton blooms in the ecosystems and the formation of dead zones or toxins in the water. The excess nitrogen and phosphorus enter the water from agriculture water runoff and sewage release .

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Which of the following best describes an example of a specific immune response to pathogens?A:Cytotoxic T cells are activated and destroy cells that pathogens have invaded. B:Fever increases body temperature and speeds up the body's reaction to pathogens. C:Phagocytes identify cells invaded by pathogens and mark them for destruction. D:Mucus traps pathogens and destroys them before they can enter the body.
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This involves replacing faulty genes with normal working genes in order to provide a “cure” for a genetic disorder:a. DNA fingerprinting c. Human Genome Project b. gene therapy d. allele testing
1. Hot coffee is stirred with a spoon, the spoon gets hot due to _______________. 2. A chair is placed several feet from a fire in a fireplace. The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of_______________. 3. A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to _______________.

Which statement is the correct explanation of the function of macromolecules in carrying out a major function in the cell?

Answers

Macromolecules are large molecules with many atoms. They have various functions in the body including storage and transmission of hereditary information through nucleic acids. Thus, option D is correct.

What are nucleic acids?

Nucleic acids are one of the major macromolecules that are made of nucleotides joined together to make a whole chain. The nucleic acids are present in the nucleus of the cell and are crucial as they are involved in the transfer of hereditary characters.

The nucleic acids include DNA and RNA that are majorly involved in coding, storing, and transferring genetic information from generations. DNA comprises the genetic material and RNA allows the regulation and coding of the genes.

Therefore, option D. the nucleic acids store and transmit hereditary information is correct.

Learn more about nucleic acids here:

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Your question is incomplete, but most probably your full question was, Which statement is the correct explanation of the function of macromolecules in carrying out a major function in the cell?

A. Lipids control the rate of cell reactions.

B. Carbohydrates form waterproof coverings.

C. Proteins are the main source of energy for the cell.

D. Nucleic acids store and transmit hereditary information.

Answer:

Nucleic acids store and transmit hereditary information.

Explanation:

Describe what a limiting factor is and describe how each factor impacts the rate of photosynthesis.

Answers

A limiting factor is anything that constrains a population's size and slows or stops it from growing. these factors are mostly biotic . For example, Food or mates. Even competing for resources. Factors for the rate of photosynthesis range. The rate of oxygen output, carbon dioxide uptake, carbohydrate (glucose/sugar) production, temperature is also a limiting factor because At low temperatures, the rate of photosynthesis is limited by the number of molecular collisions between enzymes and substrates. At high temperatures, enzymes are denatured. As well as light intensity because without the sun it’s not even possible

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur? a. DNA contains phosphorus and no sulfur.
b. Proteins contain phosphorus and no sulfur.
c. DNA contains sulfur and little phosphorus.
d. Proteins contain sulfur and little phosphorus.

Answers

The reason why Hershey and Chase labeled the viral DNA with radioactive phosphorous and not radioactive sulfur is because A) DNA contains phosphorous and no sulfur. 
Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur because DNA contains phosphorus and no sulfur.

PLEASE SOMEONE HELP MESS

Answers

Answer:

It's B.

Explanation:

uhm, i already went in one? btw, why "mess"? ️ ️

Where does blood go after it is pumped out of the left ventricle

Answers

After the left ventricle the blood is forced through the semi-lunar valves and into the aorta (artery) which then pushes the blood out for transportation to the body

How is pillow lava evidence of
sea-floor spreading?

Answers

Pillow lava is evidence of sea-floor spreading because the lava comes up out of cracks at the mid-ocean ridge and becomes newly formed rock. The farther away you get from the mid-ocean ridge, the older the rock is.
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I need help ASAP PLEASE