Which of the following describes a negative feedback system?

"Producer → primary consumer → secondary consumer" best represents a simple food chain. Therefore, option A is correct.

A food chain is a network of links in a food web that runs in a straight line from producer organisms to apex predators, detritivores, or decomposer species.

A food chain also demonstrates how organisms are connected to one another by the foods they consume. A food chain's levels correspond to several trophic levels.

"Producer → primary consumer → secondary consumer" best represents a simple food chain. Therefore, option A is correct.

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harles Darwin is renowned in many countries across the globe as the man who developed the Theory of Evolution. His theory sets about explaining the progressive changes that occur within species down the generations, as well as the formation of new species, when environmental pressures have differential effects on the reproductive success of all individuals.

Darwin's first observation illustrates this as evolution describes changes in inherited traits of populations through successive generations. To fully understand the science of ecology, one must first be able to grasp evolutionary concepts. Members of a population often vary in their inherited traits.

Answer:

True

Explanation:

When transfer energy, the substance's temperature changes which can change the molecules' freedom. For example, when water freezes the water molecules loose temperature and slow down, unlike in a gas where molecules are free and energetic.

Answer:

Mineral crystals form in many different shapes and sizes. A mineral is made up of atoms and molecules. As the atoms and molecules combine, they form a particular pattern. ... The final shape of the mineral reflects the original atomic shape.

Explanation:

Answer:

The thickness

Explanation:

The minerals could be thinner or thicker depending on where they come from. :) hope this helped. Have a good day!

Answer:

Explanation:

To systematically investigate the yellowing of the plant's leaves, you can follow these steps:

1- Observation: Observe and note that after five days in the room, most of the plant's leaves have turned yellow.

2- Question: Ask yourself, "Why did the leaves of the potted plant turn yellow after being kept in the room for five days?"

3- Hypothesis: Make an educated guess about the possible cause of the yellowing. For example, you could hypothesize that the lack of sunlight in the room caused the leaves to turn yellow.

4- Experiment: Design an experiment to test your hypothesis. Place another potted plant in a different room with similar conditions but with sufficient sunlight.

5- Data collection and analysis: Record and compare the condition and color of the leaves in both plants after five days. If the plant with sunlight has green leaves while the one in the room still has yellow leaves, it supports your hypothesis.

6- Conclusion: Based on your observations and the results of the experiment, conclude that the lack of sunlight may be the cause of the yellowing of the plant's leaves.

By following these steps, you can systematically ask the right questions, form a hypothesis, conduct an experiment, and reach a conclusion using the scientific learning process.

Hope it helps!!! :)

A systematic method to ask the right questions, make educated guesses, conduct scientific experiments, and arrive at a conclusion is to follow the scientific method as follows:

A hypothesis could be; The yellowing of the plant's leaves is a result of reduced exposure to sunlight.

The yellowing of leaves in a potted plant kept away from sunlight is primarily due to a process called chlorosis which is the loss or reduction of chlorophyll in plant tissues.

When a potted plant is kept away from sunlight or receives insufficient light, the plant is unable to carry out photosynthesis. Consequently, the chlorophyll content in the leaves decreases, and they start to lose their green color.

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Answer:

I. tRNA anticodon bonds to mRNA codon

II. Ribosome bonds to mRNA strand

III. Ribosome reaches a STOP codon and detaches from the mRNA

IV. Each tRNA adds an Amino Acid to the chain as the Ribosome moves along the mRNA

Explanation:

Translation is the second process of gene expression in which a protein molecule is synthesized from the information in a mRNA strand. Translation occurs in the RIBOSOME (an organnelle for protein synthesis made up of ribosomal RNA (rRNA) and proteins). The process of translation occurs in three stages viz: Initiation, Elongation and Termination.

Initiation occurs when the ribosome binds to the mRNA strand in the cytoplasm. The mRNA sequence is then read in a group of three nucleotides called CODON by the ANTICODON of a transfer RNA (tRNA). The basis of reading is the complementary base pairing rule i.e. A-U, G-C. Options I and II describes this stage.

In the elongation stage, the tRNA carries an amino acid corresponding to what it reads in the mRNA codon to the growing polypeptide chain. The amino acids bonds to one another via a peptide bond. As each codon is being read, the mRNA gradually moves over the means sequence. Option IV describes this stage.

Elongation stage continues until any of the stop codons (UAA, UAG, and UGA) are finally encountered by the trans in the ribosome. Since, there are no corresponding anticodons that can read the stop codons, they signal the termination of the translation process. The ribosome then detaches from the mRNA sequence. Option III describes this stage.

Note, option V describes TRANSCRIPTION not TRANSLATION.

Answer: D

Explanation: Bacteria are helpful because they produce oxygen, which our bodies need to breathe, and they help us to digest the food we eat.

Answer:

The only organism that doesn't eat prey is prob scavengers, because scavengers eat dead organisms, so I don't rlly think dead organisms are preys :3

Explanation:

:3

Answer:

the answer would be A

Explanation:

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The kidneys are powerful chemical factories that perform the following functions:

The physical act of moving air into and out of the lungs I called ventilation or breathing.

I hope this helps

Answer:

About bacterial fimbriae, the statement that is not correct is that they protect the cell from dehydration.

Explanation:

Bacterial fimbriae are extensions of the cytoplasmic membrane, predominantly of a protein nature, which give the bacteria the ability to adhere to surfaces, tissues or other bacteria.

These pilous structures can be present in all bacteria, constituting a factor related to their infectious capacity.  The main function of fimbriae is adhesion, so they do not constitute a protective element against dehydration.

The other options correspond to true characteristics of the bacterial fimbriae.

Water breathing animals do not face a challenge for respiration in water because they have evolved ways to optimize oxygen uptake from the water they inhabit.

These animals have adapted specialized gills that contain a large surface area which enables them to efficiently absorb oxygen from the water. They also have an increased number of blood vessels in their gills which increases the oxygen uptake from the surrounding water.

Additionally, the blood vessels in their gills contain counter current exchange systems that enable them to extract more oxygen from the water. This adaptation allows these animals to extract more oxygen from the water than would otherwise be available in the surrounding environment.

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Answer:

Glycolysis

Explanation:

Glycolysis is the first step in both aerobic and anaerobic respiration.

In the presence of oxygen, oxidative phosphorylation is the first stage of cellular respiration.

Cellular respiration may be characterized as a type of chemical process through which oxygen is utilized in order to derive energy from carbohydrates (sugars). This chemical process involves the breakdown of food in the cell with the release of energy.

The three stages of aerobic cellular respiration are glycolysis (an anaerobic process), the Krebs cycle, and oxidative phosphorylation. Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen. If oxygen is present, the pathway will continue and perform oxidative phosphorylation.

Therefore, In the presence of oxygen, oxidative phosphorylation is the first stage of cellular respiration.

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The ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.

To find the ratio between 92 mL and 3.0 fl oz, we need to convert the units to a common measurement. Let's convert 3.0 fl oz to milliliters (mL).

1 fluid ounce (fl oz) is equal to approximately 29.5735 milliliters (mL).

Therefore, 3.0 fl oz is equal to 3.0 * 29.5735 = 88.72 mL (rounded to two decimal places).

Now we can express the ratio between 92 mL and 88.72 mL:

92 mL : 88.72 mL

Simplifying the ratio by dividing both sides by the greatest common divisor, we get:

46 : 44

So, the ratio between 92 mL and 3.0 fl oz is 46 : 44, or it can be further simplified to 23 : 22.

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The effects of alcohol are high blood pressure, heart disease, stroke, liver disease, and digestive problems.

High blood pressure, heart disease, stroke, liver disease, and digestive problems are the effects of alcohol. Cancer of the breast, mouth, throat, esophagus, voice box, liver, colon, and rectum also occur due to more consumption of alcohol. Weakening of the immune system, increasing the chances of getting sick, Learning and memory problems, dementia and poor school performance also the cause of alcohol.

So we can conclude that the effects of alcohol are high blood pressure, heart disease, stroke, liver disease, and digestive problems.

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Gametes are haploid cell that result from the meitoc division of a germ cell. In the exposed example, the correct option is A. Gametes will have either the A or a allele.

Gametes are haploid cells (n) that results from meiotic cell division. They carry half the number of chromosomes of the diploid parental cell (germ cell).

Gamete formation involves the random and independent segregation of the alleles during meiosis, which results in different chromosomal combinations in the daughter cells.

In the exposed example, there is a parental cell carrying a diallelic gene Aa. This cell divides, and each of the alleles migrate to one of the resulting gametes.

Parental cell) Aa

Gametes) A and a

The correct option is A. Gametes will have either the A or a allele.

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When a person breathes in, the diaphragm contracts and the lungs expand, creating a vacuum that draws air into the lungs. The air is then circulated through the lungs, where oxygen is absorbed and carbon dioxide is released.

The diaphragm is a vital muscle in inhaling (breath-in) and exhaling, separates the chest cavity from the abdominal cavity.

When the diaphragm contracts, it flattens and moves down. This increases the space in the chest cavity, which causes the lungs to expand. The lungs are elastic, so they expand when the space around them increases.

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Answer:

Well I'm not sure if my answer is correct though but in all these cycles it involves the replenishment of air in ecosystem depending on the organisms which use it.

All of the options are chemical approaches to control micro-organism excepts: B Disinfectants

19. The scientific name for modern man is: B. Homo sapiens

20. kingdoms are prokaryotic organisms placed D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are: B. Angiosperm

22.  taxonomic groups contains closely related organisms A. Genus

23. Malaria causing single-celled parasitic protozoan is called: D. Plasmodium

24. kingdoms consists of eukaryotic organisms such as yeast, molds, and mushrooms A. Kingdom fungi

25. Ecology is a biological science that deals with except: D. none

26. The organism that are consumer is D. Scavengers

Disinfectants are special chemicals that are used to kill germs or prevent them from growing on surfaces or objects. They are not usually used to control microorganisms within living things, unlike antibiotics, antiseptics, and autoclaving, which are all chemicals used to control microorganisms.

Homo sapiens is the fancy name used by scientists to refer to regular, everyday humans This is the species that humans are a part of.

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18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants

19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens

20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm

22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class

23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium

24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population

25. Ecology is a biological science that deals with all of the following except Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista C. organism D. none​

26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers

Answer:

A

Explanation:

A. Secondary succession occurs in ecosystem that have no vegetation.

What is secondary succession?

"Secondary succession, type of ecological succession (the evolution of a biological community's ecological structure) in which plants and animals recolonize a habitat after a major disturbance—such as a devastating flood, wildfire, landslide, lava flow, or human activity."

What are the stages of secondary succession?

The stages that lead to secondary succession include:

What is an ecosystem?

"An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life."

What is a vegetation?

"Vegetation is defined as growing plants, or a life without physical, mental or social activity."

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Mutations are considered important in evolution because they are the ultimate source of genetic diversity.

Answer:

Mutations are one of the fundamental forces of evolution because they fuel the variability in populations and thus enable evolutionary change.

Answer:

Carnivores have biological adaptations that help them hunt. Carnivorous mammals such as wolves have strong jaws and long, sharp teeth that help them grab and rip apart their prey. Plant-eaters, on the other hand, usually have big molars that help them grind up leaves and grasses.

Answer: C Passive transport does not require energy, but active transport does

Answer:

The extinction you are referring to is unclear, as there have been several mass extinctions throughout Earth's history. However, it is generally accepted that climate has played a significant role in many of these events. Prior to some of the mass extinctions, such as the Permian-Triassic extinction and the Cretaceous-Paleogene extinction, the climate was warm and tropical with high levels of carbon dioxide in the atmosphere. This warm climate was likely a contributing factor to the extinction, as it may have led to changes in sea level, ocean circulation, and weather patterns that disrupted ecosystems and caused widespread extinction of species. However, it is important to note that climate is just one of many factors that can contribute to mass extinction events, and there are often multiple causes involved.

Answer:

When a neurotransmitter is released, the posterior receptor neuron has the receptor to bind to it because that neurotransmitter is a stimulator of the postsynaptic membrane.

Explanation:

The neurotransmitters that are released from the motor plate, that is, from the postsynaptic membrane to the presynaptic space, are captured by receptors of the postsynaptic membrane, which can be another neuronal structure to transmit an impulse or a muscle to be able to execute the contraction.

I leave you an image that draws up the stimulation of the postsynaptic membrane by means of a neutrotranismor, these are called as: adrenaline, norepinephrine, acetylcholine, etc.

Number 1 is the presynaptic membrane that releases the neurotransmitter (yellow balls), number 2 is the intersynaptic space, 3 is the postsynaptic membrane that in number 4 can be seen to be activated by relating to the neurotransmitter

A scientific argument is a method that researchers use to direct their work. In order to ultimately improve rational explanations and experimental designs, scientists point out flaws and limitations in other people's arguments. Evidence-based arguments is the term for this technique.

The aim of scientific reasoning is to assess the reliability and validity of methods and results. It would be appropriate to accept the scientific research if one could validate and demonstrate all of the points made. This part is structured around the four components of scientific argumentation

The method by which research, as a field, creates and greater integration, is through scientific debate. Other scientists assess and analyze the assertions, supporting evidence, and explanations of that evidence when scientists make arguments in favor of novel theories.

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Answer:pollen grain

Explanation:

Because it contains male gametophyte.