Unlike mammals, fish

Answers

Answer 1
Answer: In the question re-posed as one of the answers the best solution is option D That is to say Unlike mammals fish ... utilize gills for gas exchangeIn the question re-posed as one of the answers the best solution is option D
Answer 2
Answer:

the fish release gas  so that can go up above the water breath and then go back into the water


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When Mendel crossed purebred purple flowering plants (PP) with purebred white flowering plants (pp), what were the flower colors of the resulting offspring? 25 percent white and 75 percent purple 50 percent white and 50 percent purple 100 percent purple 100 percent white

Answers

The answer is 100 percent purple

Let P be dominant allele for purple flowers and p recessive allele for white flowers. So purebred purple flower has two P alleles and its genotype is PP and purebread white flower has two p alleles and its genotype is pp. Since P is dominant over p, when found together like in heterozygous plants (Pp), the flowers will express dominant allele and will be purple.
So, a cross between purebred purple flowering plants (PP) with purebred white flowering plants (pp) will have 100% of the offspring with genotype Pp and purple flower color.

Parents:               PP      x       pp
Offspring:        Pp     Pp      Pp    Pp

When Mendel crossed purebred purple flowering plants (PP) with purebredwhite flowering plants (pp), the flower colors of the resulting offspring is: 100 percent purple.

WHAT IS MENDEL CROSS:

  • Gregor Mendel, who is referred to as the FATHER OF GENETICS, crossed pea plants using several of their characters.

  • He crossed purebred purple flowering plants (PP) with purebred white flowering plants (pp) to obtain offsprings that were all purple flowered (Pp).

Therefore, it can be said that when Mendel crossed purebred purple flowering plants (PP) with purebred white flowering plants (pp), the flower colors of the resulting offspring is: 100 percent purple.

Learn more about Mendel cross at: brainly.com/question/4441612

PLEASE HELP ASAP WILL DO 20 POINTS NOW AND WILL ADD MORE 50 LATER IF THE ANSWER IF WHAT IM LOOKING FOR EXPERIMENT: TISSUE STRUCTURE

OBJECTIVES
Observe different types of cells.





Use the microscope. These supplies and equipment are needed:

prepared slide of muscle tissue
prepared slide of some internal organ such as the kidney, liver, or heart
prepared slide of erythrocytes, or leukocytes (from blood)
Follow these directions and complete the activities.
1. Place one of the prepared slides of animal tissue on the stage of the microscope.
2. Focus the microscope on low power. Then change to the high power objective. Focus on the tissue, and note the cells.
3. On a separate sheet of paper, draw an individual cell that you see in the tissue. Note the shape of the cell and its other distinctive characteristics.

What do you think the function of this cell might be?
4. Repeat Steps 1 and 2 using the other prepared slides.
5. On a separate sheet of paper, draw individual cells from the other prepared slides examined.
What do you think the functions of the other cells drawn might be?
If all of the different kinds of cells which you observed had been taken from the same organism or individual, would they have all had the same genetic information?
Consider specialization: What biological concept or occurrence is demonstrated by the different kinds of cells which were observed?
Why is it important?

Answers

Answer: 434 words total. Left two questions blank (they are underlined) so youll probs need to fill it in. I also suggest putting it into your own words so if they run it through a plagerism checker this doesnt pop up. I hope this helps tho.

Introduction:

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.  

Materials:

• Microscope  

• Prepared slide of muscle tissue  

• Prepared slide of some internal organ such as the kidney, liver, or heart

• Prepared slide of erythrocytes, or leukocytes (from blood)

Instructions:

1. Place one of the prepared slides of animal tissue on the stage of the microscope.

2. Focus the microscope on low power. Then change to the high-power objective. Focus on the tissue, and note the cells.

3. On a separate sheet of paper, draw an individual cell that you see in the tissue. Note the shape of the cell and its other distinctive characteristics.

-What do you think the function of this cell might be?

4. Repeat Steps 1 and 2 using the other prepared slides.

5. On a separate sheet of paper, draw individual cells from the other prepared slides examined.

Questions:  

What do you think the functions of the other cells drawn might be?

- (i think this differs on person to person so may need to do it yourself)

If all of the different kinds of cells which you observed had been taken from the same organism or individual, would they have all had the same genetic information?

- Yes, the cells will have the same genetic information. However, the particular combination of genes that are turned on (expressed) or turned off (repressed) dictates cellular morphology (shape) and function. Essentially meaning that though the cells share the same genetic information they do not necessarily share the same functions.  

Consider specialization:  What biological concept or occurrence is demonstrated by the different kinds of cells which were observed?

- Though these cells have the same DNA, they all have different phenotypes. The phenotypes are different because the cells appear different under the microscope. The cells do this by expressing different genes at different rates. For example, the blood cell is expressing the gene to make hemoglobulin while the other cells are probably expressing different genes that allow them to be specialized. Cells differentiate which means that they are becoming more specialized. Epigenetics focuses on how cells become more specialized.  

Why is it important?

- This is important because it allows different parts of the body to carry out their crucial functions necessary for the whole body to run properly.  

This is important because it allows different parts of the body to carry out their crucial functions necessary for the whole body to run properly.  

Introduction: Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body’s hereditary material and can make copies of themselves.

Materials:  Microscope, Prepared slide of muscle tissue, Prepared slide of some internal organ such as the kidney, liver, or heart , Prepared slide of erythrocytes, or leukocytes (from blood).

Instructions: 1. Place one of the prepared slides of animal tissue on the stage of the microscope.

2. Focus the microscope on low power. Then change to the high-power objective. Focus on the tissue, and note the cells.

3. On a separate sheet of paper, draw an individual cell that you see in the tissue. Note the shape of the cell and its other distinctive characteristics.

-What do you think the function of this cell might be?

4. Repeat Steps 1 and 2 using the other prepared slides.

5. On a separate sheet of paper, draw individual cells from the other prepared slides examined.

- Yes, the cells will have the same genetic information. However, the particular combination of genes that are turned on (expressed) or turned off (repressed) dictates cellular morphology (shape) and function. Essentially meaning that though the cells share the same genetic information they do not necessarily share the same functions.  

Consider specialization:  What biological concept or occurrence is demonstrated by the different kinds of cells which were observed?

- Though these cells have the same DNA, they all have different phenotypes. The phenotypes are different because the cells appear different under the microscope. The cells do this by expressing different genes at different rates. For example, the blood cell is expressing the gene to make hemoglobulin while the other cells are probably expressing different genes that allow them to be specialized. Cells differentiate which means that they are becoming more specialized. Epigenetics focuses on how cells become more specialized.  

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Please help!!
Need the correct answer
Urgent
Will give the brainliest​

Answers

Answer:

1) is A

2) is D

3) is D

Explanation:

Predict the chemical formula of butyne, having one carbon-carbon triple bond.

Answers

C÷C-C-C1-2-3-4 (left to right)The ÷ represents the triple bond.C1 is triple bonded to C2, as well as bonded to a H.C2 is triple bonded to C1, as well as bonded to C3.C3 is bonded to 2 H's, as well as C2 and C4.C4 is bonded to C3, as well as 3 H's.(Hope this helps, it's difficult to make a diagram on phone).

Krebs cycle occurs in the ___ of a eukaryotic cell. Question 27 answers matrix of the mitochondrion cristae membranes of the mitochondrion nucleus cytoplasm

Answers

The answer to the question stated above is matrix of the mitochondria or matrix of the mitochondrion
Krebs cycle occurs in the matrix of the mitochondria of a eukaryotic cell.
Additional information:
 >matrix of the mitochondria is the fluid filled interior of the mitochondria.

Final answer:

The Krebs Cycle occurs in the matrix of the mitochondrion of a eukaryotic cell, which is a part of the process of cellular respiration, generating energy for the cell.

Explanation:

The Krebs cycle, also known as the citric acid cycle or the tricarboxylic acid (TCA) cycle, takes place in the matrix of the mitochondrion of a eukaryotic cell. This cycle is a crucial part of cellular respiration, the process by which cells generate energy. During the Krebs cycle, the pyruvate molecules derived from glucose are oxidized and, in turn, produce ATP (adenosine triphosphate), the main source of cellular energy, and other high-energy compounds. The matrix of the mitochondrion provides the necessary environment and enzymes for this cycle to occur effectively.

Learn more about Krebs Cycle here:

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A pond near a city park is found to be contaminated with both bacteria and excess nitrogen. The bacteria most likely came from _____, and the excess nitrogen most likely came from _____.

Answers

Excess nitrogen is brought in the pond from the fertilizer, which are ladden in nitrogen and phosphorous, and rain water or running water takes that nitrogen to the water bodies.Bacteria must have come from the sewage disposal in the pond. Sewage is rich in organic material and allows proliferation of bacteria, which is taken to the pond when the sewage is disposed in the pond.

Answer:

runoff;sewage

Explanation: