The statement that best explains why there is usually not more than five trophic levels in a food chain is that Energy is lost from each trophic level.
A food chain shows the transfer of energy and nutrients from organisms to organisms in a feeding pathway.
Each step along a feeding pathway is known as a trophic or feeding level.
This feeding pathway in nature follows a certain pattern:
It starts with a primary producer( the grass).the primary producer is eaten by a primary consumer (example, the zebra);the primary consumer is eaten by a secondary consumer (example, the lion);decomposers converts the remains of dead producers and consumers.At every trophic level, some of useful energy is lost as heat energy. Thus as we move along the food chain, the amount of useful energy decreases progressively.
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If a section along the DNA molecule had a nucleotide sequence of "TACGCAATC", identify what the complimentary section on the RNA molecule would be?
Answer:
AUGCGUUAG
Explanation:
T - A
A - U
C - G
G - C
There are 450 calories in 100 g of trail mix. If you burn 30 calories in 10 minutes of walking, how much trail mix should you eat to replenish the energy you spend walking for 2 hours?
Answer:
to replenish the energy spent walking for 2 hours, 80g of trail mix should be eaten
Explanation:
Firstly, let us calculate the number of calories burnt in 2 hours
in 10 minutes; 30 calories are burnt
∴ in 1 minute 30/10 calories are burnt = 3 calories are burnt
2 hours = 120 minute
∴ in 120 minutes 3 × 120 = 360 calories are burnt.
Next, let us calculate the amount of trail mix that contains 360 calories
100g of trail mix = 450 calories
450 calories = 100 g
1 calory = 100/450
∴ 360 calories = 360 × (100/450)
= 360 × 0.222 = 80g
∴ to replenish the energy spent walking for 2 hours, 80g of trail mix should be eaten
Explain why the last image would be an Apocalypse
No LINKS if u don't know it DOn'T ANSWER IT.
How do you think new proteins affect the fitness of children?
Answer:
it affects ALOT!
Explanation:
Although health initiatives promote increased physical activity in children, the physiologic outcomes have not been well characterized. This investigation examined the effects of programmed aerobic exercise on protein metabolism in children (n = 7; mean ± SEM: 9.14 ± 0.46 y old; weight, 32.1 ± 1.6 kg; height, 138 ± 2.5 cm; and body mass index, 16.21 ± 0.36 kg/m2 ) using 15N-glycine methodology. Boys (n = 5) and girls (n = 2) walked (5 d/wk, 3.2–6.4 km/d) for 6 wk. Criterion measures taken at baseline (Pre) and after the exercise program (Post) included anthropometric data, dietary assessment, nitrogen balance, nitrogen flux (Q), protein synthesis (PS), protein breakdown (PB) and net protein balance [(Net) = PS − PB]. After the walking program, there were no significant changes in body weight, fat-free mass or percentage of body fat, whereas height increased (P < 0.01). Energy and protein intakes were constant throughout the study. Nitrogen balance was significantly more positive Post than Pre (P < 0.05). There was a significant decrease in Q (P < 0.0001) with corresponding decreases in PS (P < 0.001) and PB (P < 0.01). These data provide the first evidence that programmed aerobic exercise alters whole-body protein utilization in healthy, nonobese children. Longitudinal studies are required to further examine changes in protein metabolism associated with increased physical activity in this population. In addition, findings suggest a need to evaluate nutrient requirements for healthy, physically active boys and girls.
by chance may i get brainliest - :)
New proteins affect the fitness of children by; increasing fitness
Proteins as bodybuilding foodsProteins as food nutrient precursors function to build the tissues of the body and hence, are necessary for fitness.
The fitness of children is increased by the consumption of new proteins.On this note, we can conclude that proteins affect the fitness of children by increasing the fitness of children.
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Which of the following best defines PRODUCERS?*
1 poin
process by which light energy is converted to chemical energy, produces sugar and
oxygen from carbon dioxide and water
organism that obtains its energy and nutrients by eating other organisms
organism that obtains its energy from abiotic sources, such as sunlight or inorganic
chemicals
the process of using chemical energy to make sugars from carbon dioxide for energy
storage
Answer:
Photosynthesis
Photosynthesis. Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels.
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What would most likely happen if coastal North Carolina increased implementation of wind energy?
A. Investment costs to taxpayers would decrease.
B. The population of greenhouse gases would decrease.
C. Turbines could be built in highly populated areas because of low noise pollution.
D. The energy output would be consistent because wind patterns are always predictable.
Answer:
The answer would be A because it would decrease
Answer:
A. Investment costs to taxpayers would decrease.
The body temperatures of ectotherms, like lizards and turtles, can fluctuate with the environment. How do ectotherms maintain homeostasis?
Endotherms, such as birds and mammals, use metabolic heat to maintain a stable internal temperature, often one different from the environment. Ectotherms, like lizards and snakes, do not use metabolic heat to maintain their body temperature but take on the temperature of the environment.
Which of the following is the end result of meiosis II?
2 diploid cells with the same number of chromosomes as the parent cell
4 diploid cells with the same number of chromosomes as the parent cell
4 haploid cells with half the number of chromosomes as the parent cell
2 haploid cells with half the number of chromosomes as the parent cell
Answer:
I think it is not correct
Explanation:
Theresult of meiosis II is the formation of four unique cells, each carrying a new assortment of genes and chromosomes, and each with half the number of original chromosomes. ... The second cell division completes, resulting in four haploid cells or gametes.
Where do most volcanoes form?
A. Near plate boundaries
B. In the middle of tectonic plates
C. Where there is no plate movement
D. On a supercontinent
Explanation:
Most volcanoes form at the boundaries of Earth's tectonic plates. These plates are huge slabs of the Earth's crust and upper mantle, which fit together like pieces of a puzzle. These plates are not fixed, but are constantly moving at a very slow rate. ... Sometimes, the plates collide with one another or move apart.
Proteins on the surface of a human cell and on a bird influenza virus are represented in the diagram below. Describe a change in the bird influenza virus that would allow it to infect this human cell.
Answer:
Where is the diagram?....
Mrs. Jackson tells the class of a new species of living thing that was recently discovered. Cell theory states that which of the following must be true
about this new living thing?
A. It must be made up of one or more cells.
B. Its cells must be able to make their own food.
C. All its cells must perform the same function.
D. Some of its cells must include a cell wall.
Answer:
A. it must be made up of one or more cells. I hope it helps :)
Answer: D. some of the cells must include a cell wall
Explanation:
Once ice forms on a lake in winter, the water underneath the ice remains about 4 c even if the air temperature just above the ice far below freezing. What property of water helps keep the water below the ice from freezing?
Answer:
Hydrogen bonding. When the ice freezes, it becomes less dense and floats to the top. this insulates the water keeping it from freezing.
Explanation:
A farmer crosses a purple-flowered pea plant with a white-flowered pea plant and plants the seeds. The farmer observes that all offspring have purple flowers. What BEST explains the lack of white flowers in the offspring?
Note about the question:
Probably there are options for this question, but I failed in finding them. However, in the explanation box I will explain the reason for the lack of white flowers in the F1.
Answer:
The purple phenotype is dominant over the white phenotype. The allele that expresses the purple color is dominant and, in a heterozygous state, hides the expression of the recessive allele that expresses the white color. Principle of dominance.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
A man walks into a bar and orders a corona and two hurricanes. The bartender replies, “that’ll be 20.20!” explain
Answer:
because 2020 had Corona and hurricanes
Will mark brainliest and give 15 points
Explanation:
Solar eclipse
-The moon is in-between the earth and sun.
-only lasts for a few minutes.
Lunar eclipse
-The earth is in-between the sun and moon.
-can last up too an hour
Hope this helps!!
Which of the following is an accurate description of a double helix?
Answer:
The answer is ARNA.
Explanation:
Step by step explanation hope it helps tho!
Give the complementary DNA sequence from the following mRNA sequence UGGCUAAOCG
Answer:
ACCGAUU GC
Explanation:
not sure what the o is supposed to be but if its a c then a g goes in the space l left
What distinguishes each element from all others, and gives it unique physical and chemical properties?
Answer:
this is the answer hope it helps
be
how did plants move from water to land how did that change life on earth?
Answer:
Over time, plants had to evolve from living in water to living on land. In early plants, a waxy layer called a cuticle evolved to help seal water in the plant and prevent water loss. ... A later adaption for life on land was the evolution of vascular tissue.
"The chicken genome has about 17,000 genes, and the grape has about 30,000 genes." Which claim about human genes would be most strongly supported by this statement? A. The number of human genes is not especially large compared to other organisms. B. Humans have many more genes than other species. C. Humans are genetically very similar to other species and differ by only a few key genes. D. Humans are genetically very different from other species and share few if any genes with them.
Answer:A
Explanation: I took the quiz.
The claim about human genes would be most strongly supported by this statement is, that the number of human genes is not especially large compared to other organisms.
What do you mean by Genes?Genes may be defined as a stretch of DNA that helps in the determination of each characteristic specifically.
According to the human genome project, humans have 20,000-25,000 genes. while the tiny eater flea Daphnia has the most genes of any animal which is 31,000.
Therefore, the claim about human genes would be most strongly supported by this statement is, that the number of human genes is not especially large compared to other organisms.
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Which statement best explains why a bird may build a nest in a hidden location?
A.Birds build nests in hidden locations because it’s an innate behavior.
B.Birds build nests in hidden locations to avoid predators and decrease the probability of successful reproduction.
C.Birds build nest in hidden locations because it’s a learned behavior.
D.Birds build nests in hidden locations to avoid predators and increase the probability of successful reproduction.
Answer:
The answer is D
Explanation:
Which is the smallest part of an organism?
A. body tissue
B. organ system
C. organ
D. cell
Answer:
D. cell is the smallest part of an organism.
as cell is basic functional and structure of life.
When an action potential is generated within a motor neuron, ________. When an action potential is generated within a motor neuron, ________. all of the muscle cells within the motor unit are stimulated to relax the muscle cells from a neighboring motor unit will contract every muscle cell of the motor unit is stimulated to contract only select muscle cells within the motor unit are stimulated to contract the muscle cells of the motor unit will occasionally contract
Answer:
every muscle cell of the motor unit is stimulated to contract.
Explanation:
Stimulus in biology can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ. Therefore, the senses are necessary for behavior because stimuli must be sensed in order to respond.
Stimulus control can be defined as a phenomenon that arises when a living organism responds or behaves in the presence of a stimulus and in another way in the absence of a stimulus.
For example, opening the door of a microwave oven as soon as its timer beeps.
Example II; When your body touches a hot object, you quickly move away and feel some pain subsequently.
Action potentials generates the nerve impulse in a motor neuron.
When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to contract.
Which of these may be caused by an interaction between the hydrosphere and geosphere?
tides
soil errosion
photosynthesis
melting of icebergs
Pls HELP
Soil erosion may be caused by an interaction between the hydrosphere and geosphere.
What do you mean by soil erosion?Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice, snow, air, plants, and animals.
Soil erosion occurs primarily when dirt is left exposed to strong winds, hard rains, and flowing water. In some cases, human activities, especially farming and land clearing, leave soil vulnerable to erosion.
The effects of soil erosion go beyond the loss of fertile land. It has led to increased pollution and sedimentation in streams and rivers, clogging these waterways and causing declines in fish and other species.
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which one of the following answers has clear ectoplasm, pseudopodium, nucleus, contractile vacuole, cell membrane, and granular endoplasm
A.Protista
B.Animalia
Case Study no. 1
A 35 year old woman complains of muscle weakness, anxiety and depression.
Questions:
1. Which disorder account for the symptoms?
Answer:
the disorder that muscles weaken, axiety and depression is hypothyrodism.
Explanation:
A
B
C
D
HELP PLEASE!!
Answer:
Explanation:
I think C
Answer:
D
Explanation:
it's d because the features of the crosses involving incomplete dominance are intermediate phenotype of heterozygous individuals and perental phenotypes reappear in F2 when heterozygotes are crossed
not really sure but it does makes sense :)
What biome is the Golden Wheel Spider located in?
In around 50 years, the peppered moth population changed from nearly all light wings to nearly all dark wings. Explain exactly how the moth population changed (evolved).
Answer:
The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. ... Later, when pollution was reduced, the light-coloured form again predominated.
I need help
How do adult moths survive predation?
Adult moths can survive predation by being able to camouflage on to trees and avoid predators in the day and at night