What is a population's age structure? give an example

Answers

Answer 1

Answer: Population age structure is a summary of the number of individuals of each age in the population. An example is, In 2002, 30% of the worlds population was under 15 years old.

Related Questions

Which list of details describes the viviparous mode of reproduction
Exposure to cosmic rays, X-rays, ultraviolet rays, and radiation from radioactive substances may promote?
6. Use the models that you created in Lesson 2, Lab 1 to help you answer the following question.Compare the surface area to volume ratio of a large cell to that of a small cellWhy does the ratio of surface area to volume increase with the decrease in cell size?
Recently, some crop plants were genetically modified to be immune to the effects of weed killers. Which of the following should be determined before planting the resistant crop in fields?A: Could the gene for resistance be passed on to the subsequent generations of crops?B: Could the gene for resistance to weed killers pass naturally from the crop plants to weeds?C: could the gene for resistance increase the yields of the crop as compared to unmodified varieties?D: Could the gene for resistance negativity affect the genetic diversity of the crop itself?
13. Which of the following can result in irregularities leading to cancer? A. The body utilizing growth factors in development B. The body failing to respond to signals that slow the cell cycle C. The body using cyclins to regulate the timing of the cell cycle D. The body programming its cells to die

What is the importance of the carbon and nitrogen cycles to ecosystems? a. They supply the energy needed for living processes.
b. They are needed to release the energy stored in food.
c. They provide materials organisms need to build their bodies.
d. They ensure that matter only moves within a nonliving environment.

Answers

The answer is letter d. They ensure that matter only moves within a nonliving environment.
Biogeochemical processes or cycles iclude carbon, oxygen, and nitrogen cycles. These cycles show the movement of elements through living and non-living components of the Earth. The gases carbon, oxygen, and nitrogen are important components of life which are pass through organisms and nonliving components,but they are never used up.

See attached file for the illustration.

The correct answer is c. They provide materials organisms need to build their bodies. I took the test and this is 100% correct.

Which of the following can be said about the use of agriculture?A. It stunted the growth of civilization and development.
B. It prohibited the use of machinery.
C. It has included practices that led to pollution of soil and water.

Answers

the one that can be said about the use of agriculture is : It has included practices that led to pollution of soil and waterFor example, the use of pesticides during the agriculture process.The use of pesticides has proven to damage the nutrient level of the soil and increase the toxicity level of water's supply

C. it has included practices that led to pollution of soil and water

During the process of photosynthesis energy from the sun is converted into

Answers

During the process of photosynthesis ,energy from the sun is converted into chemicalenergy.

Photosynthesis involves green plants using light energy from the sun to

produce their food ( starch). This process involves series of reactions and it

provides food for consumers in the ecosystem

The product formed is Starch which is a form of chemical energy as it

contains compounds which when broken down gives cells energy.

Read more on brainly.com/question/727121

the energy from the sun is turned into a chemical energy for the plants

Hope this helped! :D

During aerobic cellular respiration, one molecule of glucose is used to produce how many ATP molecules? 2
40
36

Cellular respiration is an aerobic process because it must have which of the following to occur?

water
sunlight
glycogen
oxygen

Which of the following correctly summarizes aerobic cellular respiration?

6O2 + C6H12O6 + Energy yields 6CO2 + 6H2O
6O2 + C6H12O6 yields 6CO2 + 6H2O + Energy
6CO2 + 6H2O + Energy yields 6O2 + C6H12O6
6CO2 + 6H2O yields 6O2 + 6O2 + C6H6O6 + Energy

Answers

During aerobic cellular respiration, one molecule of glucose is used to produce how many ATP molecules?
36

Cellular respiration is an aerobic process because it must have which of the following to occur?

oxygen

Which of the following correctly summarizes aerobic cellular respiration?

6O2 + C6H12O6 yields 6CO2 + 6H2O + Energy

For the first question, I believe it's 36. For the second question, it is oxygen, as oxygen is essential for aerobic processes. For the last question, the summarized cellular respiration equation is the 2nd one.

Benthic organisms may be foundA swimming at the surface of a body of water
B living on the bottom of a body of water
C swimming in deep water
D swimming near deep water vents

Answers

Benthic Organisms may be found B.) LIVING ON THE BOTTOM OF A BODY OF WATER.

Benthic organisms are called Benthos. They live in and on the ocean floor. Examples of these organisms are worms, clams, lobsters, crabs, and sponges.

Benthos are classified as filter feeders or deposit feeders.

Why the chromosomes are in so many different positions, rather than in one distinctive position?

Answers

Answer: Chromosomes are the thread like structures, which are made up of DNA ( deoxyribonucleic acid). They are present in different locations rather than in one distinctive location ( like some are present at the nuclear center and some at the periphery). This is due to the density of genes present on them and the size of the chromosome as chromosomes have variable size.

Thus, size of chromosome and the gene density correlates to their different positions rather than one distinctive position.

Chromosomes are in so many different positions, rather than in one distinctive position. Every nucleus contains with genetic material and the entire body is made up cells.Cells undergo equational division.

Further Explanation:

The chromosome is dividing cell.A human cell has 46 chromosomes are present in the nucleus.chromosome contain genetic material.

There are some condition in which one chromosome is missing called monosomy and in the same condition in which one chromosome is extra is called trisomy.

The chromosome is made of DNA and chromatin which is composed of histone protein.Chromosome is different in size and present at different location .we can study this by karyotyping.

The cell cycle refers to an ordered flow of events which includes cell growth as well as cellular division. This cycle produces 2 new daughter cells. The cycle starts with interphase; during which, the cell grows and replicates its own DNA or deoxyribonucleic acid. The interphase begins with:

1.G1 phase: This is the primary growth phase provide nutrient to the cell.

2.S phase or synthesis of DNA: During this phase, the replication of DNA takes place. The centrosome is divide and forms mitotic spindle during the mitosis phase.

3.G2 or second gap: during this phase, the cell mainly replenishes its energy stores as well as synthesizes the proteins which are required for the chromosome manipulation.

The second phase of the cell cycle is the mitosis or M phase. Mitotic phase refers to a multiphase process during which the chromosomes are aligned, segregated, and moved into the 2 new daughter cells which are identical to each other.

This phase starts with:

1. Prophase: During this phase, the condensation of the chromosomes takes place and these chromosomes become visible. Spindle fibers formation take place, breakdown of the nuclear envelope, and nucleolus disappear.

2.Metaphase: During this phase, the formation of spindle fibers is completed and centrosomes are found at the opposite terminals of the cell. The chromosomes line up at the metaphase plate. Each of the sister chromatids is linked to the spindle fiber starting from the opposite poles.

3.Anaphase: During this phase, the cohesion proteins link with the sister chromatids and splits them down. The sister chromatids are pulled towards the opposite terminals of the cell and the non-kinetochore spindle fibers mainly lengthen and elongate the cell.

4.Telophase: During this last phase, the chromosomes arrive at the opposite terminals and start to decondense. Nuclear envelope reappears, and mitotic spindle breaks down. This marks the end of the mitosis.

The end phase of the cell cycle is called cytokinesis wherein the cleavage furrow occurs are segregates the daughter cells. In plant cells, the cell plate is responsible for the segregation of the daughter cells.

Learn more:

1. Learn more about component of DNA brainly.com/question/334927

2. Learn more about base pairing brainly.com/question/2491455

3. Learn more about RNA base pairing brainly.com/question/2416343

Answer Details:

Grade: High School

Subject: Biology

Chapter: Genetic material

Keywords:

Daughter cell,Telophase, cytokinesis, anaphase, mitosis, chromosome, chromatin, Dna, prophase, metaphase.

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Which of the following statements correctly describes the targeting of proteins to the mitochondrial matrix or the nucleus? A. Proteins targeted to the nucleus are unfolded while being inserted into the nucleus and are refolded within the nucleus. Proteins targeted to the mitochondrial matrix are completely folded into the cytoplasm and remain completed folded when they are transported into the mitochondrial matrix. B. Proteins targeted to the mitochondrial matrix are unfolded while being inserted into the mitochondria and are refolded within the matrix. Proteins targeted to the nucleus are completely folded into the cytoplasm before they are transported to the nucleus. C. Both mitochondrial matrix and nuclear proteins are folded only after they reach their destinations. D. Both mitochondrial matrix and nuclear proteins are co-translationally targeted to their destinations. E. None of these statements are correct.

Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called