Which of these is a ball and stick model?

Answer:

Explanation:

Energy is transferred through an ecosystem in steps, making up a food chain or a food web. At the bottom of the chain are the primary producers, which absorb sunlight and use the light energy to convert carbon dioxide and water into carbohydrates (long chains of sugar molecules) and eventually into other biochemical molecules, by photosynthesis.

The primary producers support the consumers—organisms that ingest other organisms as their food source. Finally, decomposers feed on decaying organic matter, from all levels of the web. Decomposers are largely microscopic organisms (microorganisms) and bacteria.

The food web is really an energy flow system, tracing the path of solar energy through the ecosystem. Solar energy is absorbed by the primary producers and stored in the chemical products of photosynthesis. As these organisms are eaten and digested by consumers, chemical energy is released. This chemical energy is used to power new biochemical reactions, which again produce stored chemical energy in the consumers' bodies.

Energy is lost at each level in the food web through respiration. You can think of this lost energy as fuel burned to keep the organism operating. Energy expended in respiration is ultimately lost as waste heat and cannot be stored for use by other organisms higher up in the food chain. This means that, generally, both the numbers of organisms and their total amount of living tissue must decrease greatly up the food chain. In general, only 10 to 50 percent of the energy stored in organic matter at one level can be passed up the chain to the next level. Normally, there are about four levels of consumers.

A food chain or a food web is made up of the stages through which energy is moved across an ecosystem. The primary producers are found at the bottom of the food chain.

By photosynthesis, they transform carbon dioxide and water into carbohydrates (long chains of sugar molecules) and ultimately into other biological compounds.

The consumers are organisms that consume other organisms as food—are supported by the primary producers. Decomposers, who feed on decaying organic materials from all tiers of the web, are the last group. The majority of decomposers are bacteria and tiny organisms.

The food web actually follows the route of solar energy through the environment and is a system of energy flow.

Therefore, A food chain or a food web is made up of the stages through which energy is moved across an ecosystem. The primary producers are found at the bottom of the food chain.

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Answer:

i think itz D.)All living things

Explanation:

Answer:

The cheapest way for the country to make electricity would be

A) Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity

The statement provides the best reasoning for regulating the amount of fish removed from the river by humans is:

A) Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.

Explanation:

For the electricity, the use of Biomass meets the demands due to the fact that, it has minimal impact on the environment, does not add carbon dioxide to the atmosphere. Also, it is renewable form of energy.

For the regulation of the amount of fish removed from the river helps to maintain the ecosystem balance. If it was not done, the fishes found in the river will be totally harvested thereby disrupting the chains in that river ecosystem.

Answer:

No, the fossil record is not complete because with further fossil discoveries, and more study, it may continue to tell paleontologists how modern whales came to behave the way they do.

Explanation:

Answer:

Its the flagem

Explanation:

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.  

Answer:

Explanation:

The answers to your questions about genetic recombination are:

Independent assortment happens during metaphase I.

Fertilization happens during sexual reproduction.

Independent assortment is random chromosome alignment resulting in variation.

Crossing over happens during prophase I.

Fertilization fuses gametes to form offspring with genes from each parent.

Crossing over is the exchange of genetic information between non-sister chromatids.

Answer:

Independent assortment happens during metaphase I.

Fertilization happens during sexual reproduction.

Independent assortment is random chromosome alignment resulting in variation.

Crossing over happens during prophase I.

Fertilization fuses gametes to form offspring with genes from each parent.

Crossing over is the exchange of genetic information between non-sister chromatids

Explanation:

Yeah it's possible. Even though both parents have round jaws... that may be the result of a dominant trait overpowering the recessive trait. As long as both parents have the recessive gene (in other words they're heterozygous traits) then there is a possibility for a child to be born with a square jaw.

Answer:

c

Explanation:

Answer:

D

Explanation:

I hope this is correct and have a great day

Answer:

Intramolecular respiration

Explanation:

I think sorry if i'm wrong

It is also called as the fermentation. It is the kind of respiration which helps the cells to breakdown energy in  the absence of oxygen.

It is called as the aerobic respiration which takes place in the presence of oxygen.

Anaerobic  that stands for without oxygen.This  is the method of  the cellular respiration  where it does not basically  require  the oxygen in order  to generate the  energy. For  the smaller animals for breathing , here is no enough oxygen present so  that they will  need energy for surviving  in absence of oxygen.

Anaerobic respiration is  the process in which  the cells just break down  into sugars  just to produce out  energy in the absence of oxygen. The respiration is called  as fermentation. it mainly takes place in yeast cells, bacteria, and muscle cells of animals.

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Answer:

because they can

Explanation:

Answer:

Interpase: the DNA replicates

Mitosis: the nucleses dishes

Cytokensis: Cytoplasam dishes

Explanation:

PLATO GANG WASSUP

The first phase is interphase, during which the nucleus divides and the DNA replicates. The second phase is mitosis, during which the cytoplasm divides. The third phase is cytokinesis, during which the cell divides into two daughter cells.

The cell cycle is the series of events that take place in a cell leading to its division and duplication. It consists of two major phases: interphase and the mitotic phase. The mitotic phase is further divided into two stages: mitosis and cytokinesis.

During interphase, the DNA of the cell is replicated in preparation for cell division. This phase is divided into three subphases: G1 (Gap 1), S (Synthesis), and G2 (Gap 2).

During G1, the cell grows and prepares for DNA synthesis. During the S phase, the DNA is replicated, resulting in two identical sets of chromosomes. Finally, during G2, the cell prepares for mitosis.

After interphase, the cell enters the mitotic phase. During mitosis, the replicated chromosomes condense and line up at the center of the cell. The nucleus then divides into two identical nuclei, each with a complete set of chromosomes.

After mitosis, cytokinesis occurs, which is the process by which the cytoplasm divides, separating the two daughter cells. The cytoplasmic division usually occurs simultaneously with the telophase stage of mitosis, resulting in the formation of two genetically identical daughter cells.

Therefore, interphase is the phase in which DNA replicates, mitosis is the phase in which the nucleus divides, and cytokinesis is the phase in which the cytoplasm divides to form two genetically identical daughter cells.

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Answer:

A. It is staying the same or increasing.

Explanation:

The body tissues and cells require energy in the form of ATP to work, grow and move. It is produced from cellular processes like ETC, cellular respiration and other metabolic processes.

The amount of ATP in the cell:

Option A. It stays the same or increases.

The function of ATP can be explained as:

Therefore, it remains the same or increases.

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Answer:

Roots

Explanation:

Answer:

roots

Explanation:

Answer:

substance

Explanation:

hello hope this helps

Answer: C.

Explanation:

The signs are placed because humans can cause damage to the stability of ecosystems by removing the flowering trees and shrubs.

Ecosystems are self sustaining units in which there is an exchange of materials and energy within itself. There is need for sustainability in ecosystems to ensure that they continue to survive and ultimately to preserve biodiversity.

The sign; "take nothing but pictures, leave nothing but footprints" placed on state forests and parks like Yellowstone National Park which contain varieties of flowering trees and shrubs are there because humans can cause damage to the stability of ecosystems by removing the flowering trees and shrubs.

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Genetics is the study of how heritable traits are transmitted from parents to offspring. Humans have long observed that traits tend to be similar in families. It wasn't until the mid-nineteenth century that larger implications of genetic inheritance began to be studied scientifically.

Answer:

los  cupoo

Explanation:

kk

Answer:

C-Population Density

Explanation:

Answer:

These chemical reactions produce waste products such as carbon dioxide, water, salts, urea and uric acid. Accumulation of these wastes beyond a level inside the body is harmful to the body. The excretory organs remove these wastes. This process of removal of metabolic waste from the body is known as excretion.

Answer:

Thechemical reactions produce waste products such as carbon dioxide, water, salts, urea and uric acid. Accumulation of these wastes beyond a level inside the body is harmful to the body. The excretory organs remove these wastes. This process of removal of metabolic waste from the body is known as excretion.

Answer:

There would be a decrease in deforestation, because fewer trees would be cut down for paper.

Explanation:

If everyone reduce the use of papers it will lead to reduce in deforestation.

Deforestation refers to the loss of forest area worldwide to other uses such as agricultural land, urbanization and mining activities. Deforestation, greatly accelerated by human activities since the 1960s, has adversely affected natural ecosystems, biodiversity and climate.

Several factors, both human and natural, cause deforestation. Natural factors include natural forest fires and diseases caused by parasites that can lead to deforestation. Nevertheless, human activities are one of the main causes of global deforestation.

Therefore, If everyone reduce the use of papers it will lead to reduce in deforestation.

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Answer:

Um it means your having heart problems

Explanation:

Answer:

DNA replication

Explanation:

Answer:

Gametes from both dogs are needed to maintain the correct number of chromosome in the offspring

Explanation:

Reproduction in dogs is a sexual process. During the process, haploid gametes from both the male and the female (sperm from males and eggs from females) fuse together in a process known as fertilization in order to produce diploid offspring.

The haploid gametes ensure that the offspring produced during fertilization has the correct (diploid) number of offspring. Because the production of gametes involves meiosis and crossing over of genetic materials between chromosomes, offspring produced by sexual reproduction are usually genetically different from one another. The random fusion of gametes further ensures that offspring from the same parents are different from one another.

Answer:

the red cells are the ones that carry it

Explanation:

Answer: if your question has to do with homeostasis here you go! i hope this helps:)

In order for a body to work optimally, it must operate in an environment of stability called homeostasis. When the body experiences stress—for example, from exercise or extreme temperatures—it can maintain a stable blood pressure and constant body temperature in part by dialing the heart rate up or down.

The loss of too much blood may lead to circulatory shock, a life-threatening condition in which the circulatory system is unable to maintain blood flow to adequately supply sufficient oxygen and other nutrients to the tissues to maintain cellular metabolism.