Answer:
POPs are lipophilic, which means that they can be stored in fatty tissues for long periods of time.
Explanation:
6. What happens to the energy that does not move up to the next trophic level?
The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat
what is a DNA structure
Answer:
DNA is a two-stranded molecule that appears twisted, giving it a unique shape referred to as the double helix. Each of the two strands is a long sequence of nucleotides or individual units made of: a phosphate molecule. a sugar molecule called deoxyribose, containing five carbons.
what causes blue whales to grow so large
Answer:
Stronger upwelling created the right conditions for baleen whale prey, such as krill and forage fish, to become concentrated in dense patches along coastlines. Whales that fed on these prey resources could forage efficiently and predictably, allowing them to grow larger.
rate brainiest
18 The size of a mouse population in a natural
ecosystem tends to remain relatively constant due to
A. the cycling of energy.
B. the lack of natural predators.
C. the increased numbers of decomposers.
D. the carrying capacity of the environment.
Answer:
D- the carrying capacity of the environment.
Explanation:
The limiting factors also called as the carrying capacity of the environment keeps the size of a mouse population in a natural ecosystem constant. Therefore, option (D) is correct.
What is a limiting factor in a ecosystem?Limiting factors are physical, biological, and ecological conditions that:
(1) Limit the ecosystem's ability to sustain native plant and animal populations and to accommodate natural disturbances like floods;
(2) Limit the quality or availability of habitat that supports all life stages of native species; and
(3) Limit the ecosystem's ability to sustain the local tribal culture.
The only natural factor limiting the number of mice in the home is a scarcity of resources such as food. Therefore, The limiting factors also called as the carrying capacity of the environment keeps the size of a mouse population in a natural ecosystem constant.
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27.
Scientists believe that Earth's early atmosphere
changed in composition as a result of
A. the appearance of oxygen-producing organisms
B.
the drifting of the continents
C.
the changes in Earth's magnetic field
D.
a transfer of gases from the Sun
Answer:
The answer is A
Explanation:
The appearance of oxygen-producing organisms.
The appearance of free oxygen in Earth's atmosphere led to the Great Oxidation Event. This was triggered by cyanobacteria producing oxygen that was used by multicellular forms as early as 2.3 billion years ago.What are cyanobacteria?Cyanobacteria are aquatic and photosynthetic, that is, they live in the water, and can manufacture their own food. Because they are bacteria, they are quite small and usually unicellular, though they often grow in colonies large enough to see.Cyanobacteria are responsible for the Earth's transition from a carbon dioxide-rich atmosphere to the present relatively oxygen rich atmosphere as a consequence of oxygenic photosynthesis.To know more about multicellular here
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give Two differences between monocotylidon and dycotiledon.
Answer:
In the screenshot
Explanation:
Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!
The united nations defines a megacity as having at least how many inhabitants?.
Answer: 10 million people
Explanation:
A megacity is defined as a city with a population of at least 10 million.
Ex: New York, US; Tokyo, Japan; Shanghai; China
Which protist group produces much of the oxygen on earth?.
Why is less atp obtained from the average carbon in a sugar molecule than from a carbon in a fat molecule?.
Answer:
Why is less ATP obtained from the average carbon in a sugar molecule than from carbon in a fat molecule? The correct answer is not given. The sugar carbons require more water weight during cellular storage. The carbons in fatty acids are a more oxidized form of carbon than those in sugars.
HELPPP I AM STUCK WITH THIS PROBLEM !
Answer:
All red boxes should be filled with Hh.
Explanation:
The genotype should 100% be Hh, due to the dominant (H) existing in all boxes (which represents the possibilities of the likelihood of inheriting a family trait). This means the likelihood of inheriting 2 horns is 100%.
A plant can produce either purple flowers or white flowers. The purple flower color is dominant over the white flower color. What is the ratio of the offspring with purple flowers to the total number of offspring if two plants that are heterozygous for purple flowers are crossed?
1:4
2:4
3:4
4:4
Answer:
the answer is c and not d
Explanation:
50 Points
8. Why does Australia have so many genetically distinct organisms?
Answer:
Australia has so many genetically distinct organisms because it has been separated from other bodies of land for a very long time. This has given species in Australia a long time to evolve independently from species in other areas of the world.
Under what circumstances would a food pyramid be a more useful model than a food chain?
Answer:
A food chain represents the linear relationship between organisms for food. On the other hand, a food pyramid represents the optimal number of servings to be eaten each day from each of the basic food groups.
Food pyramid represents the total number of food to be eaten each day from each of the basic food groups .A food chain represents the linear relationship between organisms for food.
What is food chain?
Food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
What is food pyramid?Food pyramid is a depiction of the optimal number of servings to be eaten each day from each of the basic food groups.
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how does gene flow affect population's genetic variation
Answer:
increase the genetic variation of the population
Explanation:
hope this helps
Which type of circulatory system is most likely present in organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells?
A closed circulatory system is present in organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells.
What is the circulatory system?
The circulatory system is an organs system that works to carry out blood cells to all cells in the body.
The circulatory system is fundamental for transporting oxygen and nutrients to all cells of the body.
A closed circulatory system is a special organ system where the blood cells are not circulating in body cavities.
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The type of circulatory system is most likely present in organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells is closed circulatory system.
What are the types of circulatory system ?
Almost all multicellular organisms want a circulatory system to move oxygen and vitamins thru the body. Evolution has brought about the lifestyles of styles of circulatory structures namely: open circulatory system and closed circulatory system.
Closed circulatory system is located in vertebrates and some invertebrates like earthworms. This system has vessels that behavior blood at some point of the body.: is located in vertebrates and some invertebrates like earthworms. Blood and interstitial fluid are distinct and it has the nlood flowing inside the capillary.
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Protozoa are often found in what kind of environment?.
What was new about Jacques Cousteau’s study of the ocean?
He created an underwater laboratory.
He documented life in the deep ocean.
He was the first to scientifically catalogue undersea life.
He was the first naval officer to also consider marine biology.
Answer:
The Answer Is He Created An Underwater Laboratory
5which of the following
does not describe
the structue of DNA
Answer:
C. contains adenine-guanine pairs
Explanation:
ATP is a nucleotide which stores energy, true or false
Answer:
False
Explanation:
Will earth run out of water?
While our globe may never run out of water as a whole, it's crucial to realize that pure freshwater isn't always available where and when humans require it. In fact, only six countries contain half of the world's freshwater. Over a billion people do not have access to adequate safe, clean water. Water scarcity will afflict the entire planet by 2040 unless water use is significantly decreased. "If we keep doing what we're doing now, there will be no water by 2040."
Identify other land resources found on earth. Describe one use for each resource.
1.__
2.__
3.__
4.__
5.__
Which BEST describes the effect on the respiratory system if the human body did not contain a circulatory system?
A
Explanation:
If the body had no respiratory system, then the body would not be able to exchange gases which may lead to body suffocation and then death
Three examples of mitotic reproduction are __________________________, __________________________, and _______________________________
Answer:
Yeast budding. Binary fission. Replacement of worn out tissues.
Explanation:
Cauliflower, broccoli, brussels sprouts, cabbage, and kohlrabi are all the same species of plant. What is responsible for the differences in these vegetables?.
Artificial selection is responsible for the differences in these vegetables.
11. If you wanted to obtain 100% roan calves, what would the parents' genotypes need to be?
If you wanted to obtain 100% roan calves, then it si required to cross parents who are homo-zygous (pure lines) for the genes associated with this trait.
What is a homo-zygous individual?A homo-zygous is an individual who has the same gene variants or alleles for a given gene locus.
Conversely, a heterozygous is an individual who has different gene variants or alleles for a given gene locus.
In breeding, pure lines (or purebred) are homo-zygous individuals that may be crossed to obtain the desired trait in the descendence.
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What was gregor's life like prior to his physical metamorphosis? (what was his job like? what do we learn from his thoughts? what do we learn from the behavior and words of the chief clerk?
Before his metamorphosis, Gregor had a common life with a boring job he could not leave due to his family.
What is the Metamorphosis about?This is a novel that describes how a common man called Gregor Samsa one day and without explanation transforms into a giant insect and how this affects his life.
How was Gregor's life before the metamorphosis?Before this big change, Gregor Samsa had a very common life. The main characteristics of this character during this period are:
He has a boring job as a travelng salesman, which he dislikes. However, he cannot leave the job because his family depends on him.His thougths and ideas reveal his general insatisfaction with his current life.Note: This question is incomplete because the name of the text it refers to is not given. Here is the missing information:
The Metamorphosis by Franz Kaf ka
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Gregor's life prior to his physical metamorphosis was very common and monotonous with a boring job that he could not leave due to the restriction of his family.
What do you mean by Metamorphosis?Metamorphosis may be defined as a dramatic change that some animals, humans, and insects go through during their life cycles.
Gregor earns his livelihood by working as a salesman. This job seems very monotonous for him but he could not leave it due to the poor financial condition of his family.
The thoughts that we learn from his behavior are to think always high and trained your mind to achieve it. He also supports his family in bad times.
Therefore, it is well described above.
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What is DNA like in a city?
The structures of five of the compounds of glycolysis are given. Arrange the compounds in order from the start of glycolysis to the end of glycolysis
Through the glycolysis process, the glucose molecule turns into pyruvate. The correct order of structures is Glucose/Fructose-1,6-biphosphate/Glyceraldehyde 3-phosphate/1,3-diphosphate glycerate/Pyruvate.
What is glycolisis?Glycolysis is the process through which the cell partially decomposes glucose and turns it into pyruvate.
It is about a series of enzymatic reactions that take place in the cytosol and do need no oxygen to occur. So it occurs in aerobic and anaerobic respiration.
It can be divided into two phases:
1st phase produces two 3-C molecules. This step needs the energy of two ATP molecules.2nd phase produces pyruvate, two ATP, and one NADH from each 3-C molecule.To sum up, glycolysis transforms one glucose molecule (6-C) into two pyruvate molecules (3-C), four ATP, and two NADH. Since it also consumes two ATP molecules, the net product is two ATP.
Steps
1) Glucose phosphorylation by hexokinase. A phosphate group is driven from ATP to glucose, turning it into glucose-6-phosphate -G6P-
Glucose + ATP ⇔ Glucose-6-phosphate + ADP
2) Glucose-6-phosphate isomerization. The enzyme glucose-6-phosphate isomerase turns glucose-6-phosphate into fructose-6-phosphate
Glucose-6-phosphate ⇔ fructose-6-phosphate
3) Fructose-6-phosphate turns into Fructose-1,6-biphosphate. The enzyme phosphofructokinase-1 phosphorylates Fructose-6-phosphate, providing a phosphate group from ATP to the Fructose-6-phosphate molecule.
Fructose-6-phosphate + ATP ⇒ Fructose-1,6-biphosphate + ADP
4) Aldolase enzyme divides Fructose-1,6-biphosphate into phosphate dihydroxyacetone (3-C molecule) and 3-phosphate glyceraldehyde (3-C molecule).
Fructose-1,6-biphosphate ⇔ phosphate dihydroxiacetone + 3-phosphate glyceraldehide
5) Phosphate dihydroxyacetone Isomerization into glyceraldehyde 3 phosphate -G3P- by triose phosphate isomerase.
phosphate dihydroxyacetone ⇒ glyceraldehyde 3 phosphate
6) Glyceraldehyde 3-phosphate oxydation by G-3-P dehydrogenase (GAPDH or GAP). The enzyme adds a phosphate into C-1 of the molecule, turning it into 1,3-diphosphate glycerate. To do it, the enzyme reduces an NAD+ group and turns it into NADH and an H ion.
gliceraldehide 3 phosphate + NAD⁺ + P ⇒ 1,3-diphospho glycerate + NADPH + H⁺
7) 1,3-diphosphate glycerate loses a phosphate group and turns into 3-phosphoglycerate.
1,3-diphospho glycerate + ADP ⇒ 3-phosphoglycerate + ATP
8) 3-phosphoglycerate isomerization, turning it into 2-phosphoglycerate by phosphoglycerate mutase.
3-phosphoglycerate ⇒ 2-phosphoglycerate
9) Phosphoenolpyruvate production. A double bond is formed at carbon 2 where the phosphate group was attached. A water molecule is released (hydrogen of carbon 2 and the OH- group of carbon 3) from the 2-phosphoglycerate.
2-phosphoglycerate ⇒ Phosphoenolpyruvate + H₂O
10) Pyruvate dephosphorylation and ATP formation by pyruvate kinase.
Phosphoenolpyruvate + ADP ⇒ Pyruvate + ATP
The correct order of structures is:
GlucoseFructose-1,6-biphosphateGlyceraldehyde 3-phosphate1,3-diphospho glyceratePyruvateYou can learn more about glycolysis at
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The correct order of the structures from the start of glycolysis to the end of glycolysis is Glucose → Fructose-1,6-biphosphate → Glyceraldehyde 3-phosphate → 1,3-diphosphate glycerate → Pyruvate.
What do you mean by Glycolysis?Glycolysis may be defined as a process in which one molecule of glucose is partially oxidized into the two molecules of pyruvate in a series of 10 enzyme-catalyzed reactions.
The first phase of glycolysis converts a 6-carbon molecule to two 3-carbon molecules with the help of ATP. The second phase is the payoff phase where a 3-carbon molecule may transform into the same carbon molecule known as Pyruvate with the release of energy.
Therefore, it is well described above.
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Which of these does NOT greatly affect climate?
Note: Answer using the exact words from one of the answers so it is less confusing
Earth's Tilt
Angle of Sunlight
Seasonal Changes
Location on Earth
Answer:
angle of sunlight
Explanation:
im pretty sure its this bc all the other answers greatly affect climate
Canopus is 313 light years from Earth. How old is the light that we are currently seeing?
Answer:
313 years old because ye4s im smart a enginner i know how to spoll cause i ahave all as
Explanation: