As water passes into the guard cells, the pore opens. explain why.

Answers

Answer 1

Answer:

Answer:One of the most important functions of guard cells is to control the closing and opening of the stoma/pores. While the opening of these pores allows water to be released into the environment, it also allows carbon dioxide to enter the cell for photosynthesis (as well as the release of oxygen into the environment).

Explanation:

Answer 2

Answer:

Answer: guard cells are a pair of cells that surround each of the stoma openings. to open the cells, they have to be triggered by one of many possible environmental or chemical signals. these can include more sunlight or higher than normal levels of carbon dioxide within the cell.

Explanation:

they open to regulate the gas and moisture exchange, hope that this is what you were looking for :)

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Explain why multicellularity of an organism requires cell-to-cell communication.
OntsBetween 2014 and 2016, more than 25,000 children in Flint, Michigan, drankwater that was contaminated with lead from lead pipes. During this time, thecity claimed the water was safe to drink. Which of the following is an actionthe city could have taken to keep the water safe?OA. Regularly test the water in residents' homes.OB. Ignore residents' requests to test the water.OC. Have city employees drink the water publicly.D. Monitor the water quality in a neighboring area.O

5) How are Parkinson's disease and ALS similar?A) Both diseases are communicable.
B) Both diseases affect muscle control.
C) Both diseases can be prevented with vaccines.
D) Both diseases are caused by an unhealthy lifestyle.

Answers

B) because Parkinson's disease make the muscles "shake" and ALS weakens the muscles.

What statement most completely describes the primary role of the cell in a multicellular organism?A.The collection of organelles interact with the environment to protect against environmental contaminants.
B. The internal structures provide shape and support to a variety of living organisms-both unicellular and multicellular.
C. They help scientist classify all living organisms by the types of cells they are made of.
D. The combination of chemical functions and genetic material enable the cell and the organism to live,grow,and reproduce.

Answers

The answer for this problem is B

two heterozygous white (brown fur is recessive) rabbits are crossed. List the parent genotypes, draw and fill in a punnett square, and list the offspirng genotypes and phenotypes

Answers

Parent's genotypes are Bb and Bb andn the offsprings genotypes after crossing them will be BB, Bb and bb while phenotypes of 3 white rabbits and 1 brown.

What is a punnett square?

The genotypes of a specific cross or breeding experiment are predicted using the Punnett square, a square diagram. It bears Reginald C. Punnett's name, who developed the method in 1905. Biologists use the figure to calculate the likelihood that a child will have a specific genotype.

A person's genotype is made up of all the alleles they have for a certain gene. The sum of a person's attributes or observable characteristics is their phenotype. Unlike phenotype, which is only impacted by genotype, genotype is directly inherited from a person's parents.

Assume B is white, b is recessive brown ; Bb x Bb

B b

B BB Bb

b Bb bb

Genotypes: BB, Bb, bb

Phenotypes: 3 white, 1 brown

Learn more about punnett square, here:

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Assume B is white, b is recessive brown

Bb x Bb

B b
B BB Bb

b Bb bb

Genotypes: BB, Bb, bb
Phenotypes: 3 white, 1 brown

Explain why spiders and ticks aren't insects

Answers

Insects have six legs but ticks and spiders have eight legs.

What type of immunity provides lifetime immunity for the body against a specific pathogen?

Answers

The type of immunity that provides lifetime immunity for the body against a specific pathogen is called acquired immunity. It is also referred to as adaptive or specific immunity.

Acquired immunity is not present at birth. it is learned. As a person's immune system encounters foreign substances (antigens) the components of acquired immunity learn the best way to attack each antigen and begin to develop a memory for that antigen. Acquired immunity is also called specific immunity because it tailors its attack to a specific antigen previously encountered. Its uniqueness lies in its ability to learn, adapt and remember.

Acquired immunity takes time to develop after first exposure to a new antigen. However afterward, the antigen is remembered, and subsequent responses to that antigen are quicker and more effective than those that occurred after first exposure. Memory of a particular antigen is kept by the B and T lymphocytes.

A solution at pH 7 contains how many times more hydrogen than a solution at a pH of 10?

Answers

Answer:

Solution of pH 7 contains thousand times more hydrogen than the solution of pH 10.

Explanation:

pH of A substance is given by the negative of the logarithm of concentration of hydrogen ions. It is given by the equation

$pH=-log \ [H^+ ]$

Here the initial pH is given as 7. We have to calculate the concentration of $H^+$ ions.

$7=- log[H^+ ] [H^+ ]=10^-^7$

The final solution has a pH 10. We have to calculate the concentration of $H^+$ in this case

$pH=-log[H^+ ] 10=-log [H^+ ][H^+ ]=10^-^1^0$

Next we have to calculate how many times more is the $H^+$ ion concentration in the solution of pH 7 when compared to the solution with pH 10.

$\frac {10^-^7}{10^-^1^0} =10^3=1000$

Thus the concentration of $H^+$ ion in the solution of pH 7 is 1000 times more than the solution of pH 10.

Final answer:

A solution at pH 7 contains 1000 times more hydrogen ions than a solution at a pH of 10. This is due to the logarithmic nature of the pH scale where each unit difference equals a tenfold difference in hydrogen ion concentration.

Explanation:

The pH value of a solution is the negative logarithm base 10 of the concentration of Hydrogen ions in the solution. The difference in pH from 7 to 10 implies a ten-fold difference for each unit of pH, thus, a difference of three pH units indicates a difference of 103, or 1000 times in hydrogen ion concentration. Therefore, a solution at pH 7 contains 1000 times more hydrogen ions than a solution at a pH of 10.

As a side note, it is important to remember that a lower pH value indicates a higher acidity (more hydrogen ions) and a higher pH value indicates a lower acidity (fewer hydrogen ions).

Learn more about pH Scale here:

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