Answer:
troposphere
Explanation:
Answer: Troposphere
Explanation:
The majority of the mass of the entire atmosphere is contained in the troposphere—between approximately 75 and 80 percent.
PLEASE HELP
An urban ecosystem is a designed ecosystem. Which of the following is (are) another example(s) of a designed ecosystem?
a. natural pond
b. a farm that has not been maintained for 10 years
c. fish aquarium
d. all of the above
16. Which of the following is an advantage of a synthetic fertilizer?
a. Amounts of nutrients can be precisely measured
b. Nutrients are lost from the soil through leaching
c. Benefits natural nutrient cycling
d. Less danger of overfertilizing
PLEASE HELP!!!! Which of the following were responsible for changing the oxygen content in
Earth's atmosphere from no oxygen to 21% oxygen?
A. Prokaryotes
B. Eukaryotes
C. Ribozymes
D. Protobionts
Im not 100% sure but the best answer I can give is Prokaryotes because they came to be around the time oxygen did as well.
Answer:
prokaryotes
Explanation:
i took the quiz
Which process is driven by the energy from earth’s interior?
Answer:
solar energy
Explanation:
Solar energy mainly drives the processes that happen at the earth's surface, like the water cycle, wind, weathering, erosion, and growth. Energy from inside the earth is responsible for internal processes like volcanism, metamorphism, and plate tectonics.
Actinobacteria sp. are fermenting organisms, which do not require oxygen to survive. These organisms break down organic material and convert it to inorganic material. Which part of the carbon cycle does this describe?
photosynthesis
respiration
decomposition
assimilation
Answer:
decomposition
Explanation:
This describes the decomposition part of the carbon cycle. Therefore, the correct option is C.
What is Carbon cycle?The movement of carbon between the atmosphere, land, oceans and living things is known as the carbon cycle. Many processes exchange carbon, including photosynthesis, respiration, combustion, breakdown, and sedimentation. These activities help maintain the carbon balance that is essential for life on Earth in both the biosphere and the planet's atmosphere.
Another important greenhouse gas is carbon, and the carbon cycle is important in controlling Earth's climate. The natural carbon cycle has been disrupted by human activities, including fossil fuel burning, deforestation, and land-use change, which have also increased atmospheric carbon dioxide concentrations and contributed to climate change.
Therefore, the correct option is C.
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What are the reactants of photosynthesis?
carbon dioide and hydrogen;
hydrogen oxygen and water
;light energy, water and carbon dioxide; oxygen and glucose
Answer:
The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.
Explanation:
It takes six atoms of carbon (C), six atoms of oxygen (O) and twelve atoms of hydrogen (H) to make one molecule of glucose (C6H12O6)
Answer:
What are the reactants of photosynthesis are light, energy, water, and carbon dioxide,
Explanation:
what is cryptograms
Answer:
A cryptogram is a type of puzzle that consists of a short piece of encrypted text. Generally the cipher used to encrypt the text is simple enough that the cryptogram can be solved by hand. Substitution ciphers where each letter is replaced by a different letter or number are frequently used.
Which of the following scenarios can be classified as a negative feedback loop?
a increase in blood pressure to reduce heart rate
b increase in testosterone to help increase a fight-or-flight response
c increase in oxytocin caused by increased contractions
d increase in platelet production to help increase blood clotting
Answer:
The scenario that can be considered an example of a negative feedback loop is increase in platelet production to help increase blood clotting (option d).
Explanation:
Negative feedback loop is what occurs when a change occurs in the body, producing a response that decreases or stops that change, with the intention of maintaining homeostasis.
When there is a wound that produces bleeding, a series of mechanisms are activated, the coagulation cascade, which promotes the release of factors that allow the formation of clots. The increased release of platelets implies negative feedback because it helps to stop the change that occurs in the body, the loss of blood, through the formation of clots.
One thing that can cause confusion is the fact that this response also involves positive, though limited, feedback that promotes the production of clotting factors and platelets to increase clot formation. What really happens is that the positive feedback promotes the general feedback, which is the negative feedback: clot formation to stop the bleeding, restoring homeostasis.
The other options are not correct because:
a. Increase in blood pressure to reduce heart rate is not possible.
b. In the fight and flight response the hormones involved are cortisol and adrenaline, not testosterone.
c. Increased oxytocin in response to uterine contractions is positive feedback.
How is cellular respiration dependent upon an animal's respiration rate?
Answer:Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.
Explanation:
Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.
Cellular respiration is dependent upon an animal's respiration rate because
respiration rate depends on the amount of oxygen inhaled and available to
break down food(cellular respiration).
The oxygen inhaled by animals enter into the cells of the body through the
blood. Carbon dioxide formed in cells is then replaced by the oxygen.
The less the amount of oxygen inhaled during respiration , the less the
cellular respiration that takes place in the animal and vice versa.
The above analysis shows that respiration rate and cellular respiration have
a direct relationship which explains why they are dependent on each other.
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Which numbered organelle produces ATP during cell respiration?
The mitochondria produce ATP during the process of aerobic respiration.
What are mitochondria?
Almost all eukaryotic cells (cells with clearly defined nuclei) have a membrane-bound organelle called a mitochondrion, whose main job is to produce huge amounts of energy in the form of adenosine triphosphate (ATP).
Mitochondria normally have a circular to oval shape and can be anywhere from 0.5 to 10 m in size. In addition to providing energy, mitochondria also create heat, control cell growth and death, and store calcium for cell signaling functions.
As an illustration, human erythrocytes (red blood cells) do not have any mitochondria, but liver cells and muscle cells may have hundreds or even thousands of mitochondria. The oxymonad species Monocercomonoides is the only eukaryotic organism that is known to be mitochondria-free.
Because they contain a unique genome, two separate membranes, and binary fission as a method of reproduction, mitochondria differ from other cellular organelles and may have evolved from prokaryotes (single-celled organisms).
Therefore, the organelle producing the ATP is the mitochondria.
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How is glucose transported to different cells? And how do you know?
Answer:
Whether a cell uses facilitated diffusion or active transport depends on the specific needs of the cell. For example, the sugar glucose is transported by active transport from the gut into intestinal epithelial cells, but by facilitated diffusion across the membrane of red blood cells.
Explanation:
Answer:
Whether a cell uses facilitated diffusion or active transport depends on the specific needs of the cell. For example, the sugar glucose is transported by active transport from the gut into intestinal epithelial cells, but by facilitated diffusion across the membrane of red blood cells.
Explanation:
The lanthanoid elements are:
Brittle and acidic
Synthetic
Soft and malleable
Unreactive
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Lanthanoid elements [ atomic number : 57 - 70 ] are metals that lie below transition metals in periodic table and are very reactive in nature, they are also reffered as rare earth metals, with characteristics like : they are so soft that can be even cut through by knife, and malleable as well, they are mostly paramagnatic.
so, conclusion can be made that the Correct choice is :
C. Soft and Malleable
What role do smooth muscle cells perform in a human body?
A dam created with waste rock from surface mining is called a(n) __________.
A)
interglacial period
B)
valley fill
C)
placer deposit
D)
sanitary landfill
E)
ore deposit
Answer:
i believe it's C
Explanation:
Select the correct answer. Stephan's mother cuts a twig from a rose bush and plants it in the soil. After a few days, Stephan observes a new plant growing. Which characteristic does the growth of the new plant depict? OA asexual reproduction OB meiosis OC photosynthesis D. sexual reproduction
Answer:
A. asexual reproduction
a) microbial biofilm plays a major role in the initiation and progression of both dental caries and periodontal infections. b) periodontal diseases and dental caries are nontransmissible diseases.
Microbial biofilm are where the microbe cells stick closely to each other as well as to the surface. They are used in various purposes like: plant protection, bioremediation, wastewater treatment, corrosion inhibition, etc. The biofilm also acts as a hub for the micro-organisms to grow and therefore cause diseases.
Periodontal diseases are the inflammation of the gums. The symptoms on the onset of the disease involve red, swollen and bleeding gums.
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Match each labeled portion of the diagram to the correct term.
Answer:
1. Cellular Respiration
2. Sunlight
3. Carbon Dioxide ***
4. Water ***
5. Chloroplast
6. Mitochondria
7. Glucose ***
8. Oxygen ***
9. Photosynthesis
10. ATP
Explanation:
*** = 3 and 4 order does not matter as they are products of cellular respiration. You can't be wrong on that if you were to switch answers between carbon dioxide and water–– they're still products.
*** = 7 and 8 order does not matter as they are products of photosynthesis. You can't be wrong on that if you were to switch answers between glucose and oxygen–– they're still products.
The rest should be in order as given.
The video relates the parts of the cell to a city. How does the video describe the nucleus?
A. Toll booth - collects ATP
B. Warehouse - stores cell products
C. the mayor - directs organelles and stores DNA
D. highway system - helps produce protiens
Answer:
B
Explanation:
because cells are stored within it
Which of the following phrases best describes the function of meiosis?
Your answer:
A. conserves chromosome number, produces genetically identical cells
B. conserves chromosome number, produces haploid cells
C. reduces chromosome number by half, produces diploid cells
D. reduces chromosome number by half, produces gametes
The phrase that best describes the function of meiosis reduces the chromosome number by half and produces gametes. The correct option is D.
What is meiosis?Meiosis is the division of gametic or sex cells. This process occurs during reproduction. It completes in eight stages. It is divided into two parts. Meiosis I and meiosis II.
After meiosis, I, the daughter cells move directly into meiosis II without going through interphase or DNA replication. With the exception of the halving of the number of chromosomes, meiosis II resembles mitosis.
Because it contains the chromosomes of both parents, to make the number of chromosome-specific to humans, its numbers of chromosomes is reduced to make it 46.
Therefore, the correct option is D. reduces the chromosome number by half and produces gametes.
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Farmers in a community are complaining that their crops are being damaged by
insects they never had problems with before. Explain what might be causing
this problem
Answer:
Unavailability of biological agent.
Explanation:
The main cause of this problem is the unavailability of biological agent for that insects in that environment. biological agents are the organisms that controls other insects population by feeding on them. When a new insect is introduced in a particular environment and no bioagent is present for it, it greatly damaged the crops and destroys the field of the farmer.
Select all that apply
Cows consume grasses and other plants to survive. In this relationship, cows are which of the following?
Heterotroph
Herbivore
Carnivore
Autotroph
What Type of reaction is C12H220
O11->12C + 11h20
a)synthesis
b)decomposition
c)oxidation
d)combustion
please respond asap
I’ve been workin on this assignment for hours and now it’s 1:30am pwees help✨
A scientists puts nucleotide chains of UUUUUU in a test tube under conditions
allowing for protein synthesis. Son the test tube is full of a polypeptide chains
composed of only the amino acid phenylalanine. What does this experiment
indicate?
A. most proteins are composed of only one type of amino acid
B. protein synthesis cannot function in a test tube
C. UUU codes for the amino acid phenylalanine
D. the amino acid phenylalanine is composed of uracil
This experiment indicates that UUU codes for the amino acid phenylalanine (Option C).
The messenger RNA (mRNA) is used as template to create a polypeptide during translation.The triplets of nucleotides or 'codons' in mRNA indicate specific amino acids to the growing polypeptide.The genetic code indicates that the codon UUU codes for phenylalanine.In conclusion, this experiment indicates that UUU codes for the amino acid phenylalanine (Option C).
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When studying cells structure using a microscope the smallest unit of measurement
commonly used to describe findings is the nanometre. Explain why.
Since a nano-metre is the most accurate unit for working with the extremely small cell structure (the majority of cell organelles are between 1 and 1000 nano meters)
Why is it important to measure cell size?The fundamental functions of a cell's physiology, such as flux across membranes, depend on the size of the cell as a whole, which is one reason why cell size matters. Changes in the volume or surface area of a cell will therefore have a significant impact on the metabolic flux, biosynthetic capacity, and nutrient exchange.
Which tool is used to see the smallest units in cells?Under a light microscope, smaller cells are clearly visible. Even internal cell structures like the nucleus, mitochondria, and chloroplasts can be seen. An image is magnified by a system of lenses in light microscopes. Micrometers are used to measure the cell's size. Human red blood cells have a diameter of 7.0 micrometers, while the smallest cell known as Mycoplasma is 0.3 micrometers. Animal and plant cells typically range in size from 10 to 30 microns.
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A scientist analyzed a segment of DNA from a human chromosome and found that the percentage of cytosine molecular bases (C) was 32%. What percentage of adenine would be found in this DNA segment?
Answer:
16%
Explanation:
PLEASE HELP ILL GIVE BRAINLEST (PROBABLY MORE THEN ONE ANSWER)
Answer:
carbohydrate and lipid
During photosynthesis, plants produce ___ and oxygen from the ___ of solar energy, water, and carbon dioxide.
Answer:
1. Glucose
2. Conversion
Explanation:
During photosynthesis, plants produce glucose and oxygen from the light of solar energy, water, and carbon dioxide. This process is called photosynthesis.
What is photosynthesis?Photosynthesis is a process that takes place in green plants because they have chlorophyll pigment. Chloroplast is the organelle that is present in green plants. This organelle has chlorophyll pigment that carries out the photosynthesis process.
In photosynthesis, water is taken from the soil, carbon dioxide is taken from the atmosphere, and with the help of sunlight, glucose and oxygen are formed in the chloroplast. Due to this, plants are called producers.
Photosynthesis releases oxygen into the atmosphere, which is required by all living organisms. Organisms take in oxygen and release carbon dioxide into the environment. This is called the respiration process.
In the grassland ecosystem, the plants do photosynthesis. In the ocean's ecosystem, phytoplankton do photosynthesis. Different consumers depend on these producers for food.
Hence, plants produce glucose and oxygen from solar light energy, water, and carbon dioxide.
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WILL GIVE BRAINLYEST
1. The graph below shows a students walk after school. Use the graph to descrito their walk. Make sure to indate the direction they are waking and the speed scordant, they are credits
in speed, or decreasing in speed. 3 points)
HINT: Think about this student's motion in three steps
A Students After School Walke
2
HURRRYYYYYYY IDK-
Answer:
J'aiderais, mais s'il y avait plus d'informations, je les comprendrais mieux pour moi et pour les autres utilisateurs également.
Explanation:
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e. coli are grown on a medium containing lactose. once glucose is added to the medium, the bacteria stop fermenting lactose
The lac operon is an operon required for the transport and metabolism of lactose in E.coli. When lactose is introduced to the increased medium, the lac genes are expressed due to the fact allolactose binds to the Lac repressor protein and maintains it from binding to the lac operator. Allolactose is an isomer of lactose. Small quantities of allolactose are shaped when lactose enters into E. coli. allolactose binds to the repressor protein and reasons the conformational change. As a result of this, the repressor can no longer bind to the operator area and falls off. RNA polymerase can then bind to the promoter and transcribe the lac genes. After some time, when the level of lactose decreases as it is metabolized using enzymes, it causes the synthesis of the repressor from the regulator gene. This repressor binds to the operator gene and prevents RNA polymerase from transcribing the operon and the transcription is stopped. This type of law is acknowledged as negative regulation.
Allolactose is a disaccharide comparable to lactose. It consists of the monosaccharides D-galactose and D-glucose linked thru a β1-6 glycosidic linkage alternatively of the β1-4 linkage of lactose. It may additionally occur from the occasional transglycosylation of lactose through β-galactosidase.
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Elizabeth encountered a huge spider dangling from a tree on her way to check the mail. She nearly walked straight into it, and this near miss with the scary spider caused her body to go into fight or flight mode. Which area of the brain would start releasing adrenaline to direct other parts of the body to respond to this threat?.
The part of the brain that sends out the signal to the adrenal cortex to release the hormone is the hypothalamus of the brain.
What is Adrenalin?The adrenaline is a hormone that is secreted by the adrenal cortex and is known to be functional in a time when the body is in distress. It is sometimes called the fight and the flight hormone because of the role that it plays in the times when the body is faced with danger.
Now, the part of the brain that sends out the signal to the adrenal cortex to release the hormone is the hypothalamus of the brain. Another name for the hormone is epinephrine.
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Glycogen is a polysaccharide stored in animal cells. When glycogen is broken down, glucose is produced. Some people's cells are not able to break down glucose after it has been produced from the breakdown of glycogen.
Which of the following would most likely be observed in a person as a direct result of the inability to break down glucose?
Question 14 options:
A rapid heartbeat and fast metabolism
A swelling of the joints
An inability to digest proteins
A low energy level and muscle weakness
Answer:
the last one would be the correct answer, A low energy level and muscle weakness.