Explanation:
I would use a digital weighing scale to perform the operation
the following steps should be considered.
1. Turn ON the digital scale
2. Zero the scale(this eliminate any previous measurements or default readings)
3. Place the dish on the scale and note the initial readings
4. Place the sample of NaCl to be measured and note the final reading
5. Subtract the initial reading from the final reading
The final reading is the amount of NaCl
Which of the following serve as antibodies? carbohydrates lipids proteins nucleic acids
Answer:
Protein
Explanation:
Out of the four macromolecules, proteins are the ones that serve as antibodies.
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Answer:
Proteins for sure.
how is meiosis similar from mitosis
A. both occur in somatic cells
B.both produce two daughter cells
C. both are forms of cell reproduction
D. both involve two divisions of a cell
Answer:
C
Explanation:
Both helo with cell division or reproduction of cells.
Hope this helps!
what do we call the chemical substances necessary for an organism to sustain life A. energies B. nutrients C. supplements
Answer:
B. nutrients
Explanation:
Nutrients are chemicals present in all living things on Earth. They are essential for the lives of humans, plants, animals ,and all other species. Nutrients help remove food that provides energy to the species. Carbon, hydrogen and oxygen are the most essential nutrients which they need.
Hence, option B is correct as it is necessary for sustain the life of an organism
Answer: B.
Explanation: Nutrients are chemical substances found in every living thing on Earth. They are necessary to the lives of people, plants, animals, and all other organisms. Nutrients help break down food to give organisms energy. The most important nutrients they need are carbon, hydrogen, and oxygen.
Please help me!!!!!!!!!!!
Answer:
The likelihood that a particular event will occur.
Explanation:
Answer:
The likelihood that a particular event will occur .
Explanation:
This means how sure you are that something will happen
You mix activated yeast with different carbohydrates and measure the CO2 production over a time span of 10 minutes for each type of carbohydrate. Is this experiment a qualitative analysis or a quantitative analysis
Answer:
quantitative analysis
Explanation:
Qualitative analysis refers to quality whereas quatitative analysis refers to the amount or quantity. In this experiment, we see how much carbondioxide gas is produced after the use of different carbohydrates given to the yeast. In this experiment, we want to know the concentration of the product in the reaction not the quality so we can say that this experiment shows quantitative analysis as compared to qualitative analysis.
Which is not likely to be studied by a biologist?
Answer:
there are many things that are not studied by biologist such as physics, figuring out new elements
Explanation:
biologists are people that study peoples life
Answer:
clouds
Explanation:
which structure inside the cell holds the digestive enyzmes that break down carbohydrates?
Answer:
Lysosomes
Explanation:
Lysosomes are membrane-bound organelles that contain digestive enzymes that break down proteins, lipids, carbohydrates, and nucleic acids. They are important in processing the contents of vesicles taken in from outside the cell.
Why does the troposphere contain the most water vapor out of the atmosphere? Everywhere says that it does but why?
Answer:
The troposphere does contain the most water vapor out of the atmosphere
Explanation:
The troposphere does contain the most water vapor out of the atmosphere because the troposphere is where all the weather conditions like: rain cloudy, hurricanes take place and all the weather conditions have water vapor because most of the weather conditions have clouds, or water vapor.
Because plants release water during the transpiration process, the troposphere contains the most water vapour in the atmosphere. This remains here, and as a result rain forms.
What is the atmosphere?
The atmosphere is the earth's outer layer, which is further subdivided into troposphere, stratosphere, mesosphere, and so on. The troposphere is the part of the atmosphere closest to the earth, and it is where rain and clouds form.
The upper stratosphere is less disturbed and more stable than the troposphere, as less wind disturbance is seen here. In this layer, planes and jets are travelling. It has a special layer called the "ozone layer" that protects the earth from the UV light of the sun. The mesosphere is the coolest of these atmosphere layers.
The troposphere has disturbances such as those caused by winds; clouds form here. There are various gases, such as oxygen, carbon dioxide, nitrogen, water vapor, and so on. The water vapour is the result of transpiration from plants and evaporation from water bodies.
Hence, this troposphere layer contains water, because the water above it cannot remain liquid due to the increased temperature of the stratosphere.
Learn more about the atmosphere, here.
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Can someone please help me
Answer:
Trypsin
Explanation:
Rennin has an optimum pH of 3.4.
Pepsin has an optimum pH of 2.0.
Trypsin has an optimum pH of 7.5.
Salivary amylase has an optimum pH of 6.5.
Enzyme Y is Trypsin.
Which is one characteristic of consumers? They create all usable food energy. They make their own food. They may eat plants and animals. They obtain their energy from the Sun.
Answer:
they may eat plants and animals
Explanation:
plants- herbivore meat/animals- carnivore both- omnivore
All materials within ecosystems can be recycled.
Answer:
All the things expect enegry are recycled.
Explanation:
When the decomposer decomposes the organic substances than they are taken by plants in the form of nutrition and minerals. Likewise, the food prepared by the plants are taken by animals and the nutrition is recycled. The oxygen and carbon dioxide cycle is also recycled. When the animals releases carbon then the plants take it and gives out the oxygen. In this way oxygen and carbon dioxide cycle is also maintained in nature.But incase of enegry it cannot be recycled but frequently transfered from one form to another form.
hope it helps..
Which of the following shows steps that happen to the chromosomes in Meiosis in the correct order?
Answer:
Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm). In each round of division, cells go through four stages: prophase, metaphase, anaphase, and telophase.
Crop rotation is a method of soil conservation because _______. a. the land produces more than one type of crop b. it requires plowing and tilling that reduces soil compaction c. it does not use the same parcel of land in sequential seasons d. it avoids the depletion of soil nutrients
Answer:
d. It avoids the depletion of soil nutrients.
Explanation:
Crop rotation is the process of planting different crops in the same area of land in rotation. This allows the breathing of the soil as well as the retention of nutrients in the soil.
Crop rotation is one form of conserving soil as it helps in saving the nutrients of the soil from getting depleted. As different crops require different nutrients, the change in crop plantation between different types of crops help in maintaining the fertility of the land. This way, when crops are planted in rotation, there is also the rotation of the different nutrients required for the different crops planted, thus allowing the cycle of nutrient change to take place.
Thus, the correct answer is option d.
The lock-and-key analogy is used to describe the Group of answer choices binding of G proteins to transmitter receptors. activation of the nerve impulse. action of transmitter molecules on receptor proteins. degradation of transmitter molecules by enzymes.
Answer:
The correct option is the degradation of the transmitter molecules by enzymes.
Explanation:
The key lock system is a type of enzymatic catalysis / anabolization, and is so called because the enzyme that reacts with its substrate is in the male-female or key lock format.
Enzymes can also react by other mechanisms, but this is known for the perfect fit of the substrate with the binding site, since one represents the negative of the other, once joined and the reaction started, the active site is occupied and the enzyme is not reacts with another substrate simultaneously to that one.
*Environmental science 11. What’s the main difference between the anthropocentric and the holistic approach to nature? The anthropocentric approach is a subset of the holistic approach. The anthropocentric view places humanity at the center of the universe and considers nature as something to use (and abuse). The holistic approach sees humanity as part of nature and subject to its natural laws The anthropocentric point of view was only commonplace in Medieval Europe because of its religious implications. A holistic point of view is less theistic The anthropocentric view places humanity at the same level as nature while the holistic view places as inferior 12. According to a study by the World bank, what’s the relationship between a country’s economic improvement and environment indicators There’s no relationship between a country’s economic development All environment indicators improve as the country gets richer. All environment indicators get worse as the country gets richer. Some environment indicators improve right away, some get worse then improve, and get worse and don’t improve 13. In high-elevation forests in Pennsylvania, ecologists have noticed a serious decline in certain tree species. Some scientists propose that increased soil acidity might be the cause. What’s this phenomenon Decreases in pH cause by climate change Mercury contamination caused by coal-fired power plants Acid rain, which is caused by SO2 from combustion mixed with atmospheric water vapor Ozone depletion 14. What’s today’s most pressing environmental issue? Pesticide contamination Climate change Flooding Food shortage 15. What caused the environmental situation in Lake Naivasha, Kenya to improve? The environment became so polluted that companies could no longer grw fresh flowers There was a rebellion in the villages, and kenya decided to oust the flower farms Lake naivasha adjusted to the increased nutrients in the water, and new species now thrive Consumers in Europe stopped buying fresh-cut flowers in supermarkets, so companies had to clean up their practices 16. Carbon trading is a mechanism by which companies may purchase the right to pollute over a set period, up to a certain quota, established by the government. In the market-based approach, what’s this tool called? Tax break Market-based quota Property rights instrument Market-based instrument 17. Which of these Best describes the reason for the very rapid growth of the human population in more modern times? The absence of limiting factors Improved health care, hygiene, and technology An increase of Earth’s natural resources The rise in income 18. Residents of Flint, Michigan started organizing when government officials and agencies ignored their complaints that their drinking water was making them sick. What’s this organizing an example of? A grassroots movement A legal settlement An NGO-led effort An EIS 19. Which of the following statements is Not based on climate change denial Climate change is exaggerated by scientists so they can get more grants Climate change is part of a natural cycle, and human have little to do with it Climate change is a hoax The climate is changing rapidly, but it would be expensive to fix 20. Who was Rachel Carson? She advocated for the ban of CFCs to combat the increase in size of the ozone layers She was a US government ecologist who worked to protect bird populations She fought a legal battle with environment scientists to prove they were wrong about the effects of DDT She wrote Silent spring, a book that described the environmental impacts of DDT
Answer:
I think it's Carbon Credit Network
Explanation: im dont sure but I think it's Carbon Credit Network
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When can exponential growth occur in a population?
two evidences that shows that gas molecules flow faster than liquid molecules
Answer:
gases can spread into air qiuckly and don't stay as close as liquid particles do.these are the 2 evidence thet show that gas molecules flow faster and liquid molecules.
Diverse groups are _____ able to provide for all of their members’ needs and tend to have _____ integration and communication than do homogenous groups. A. more, more B. more, less C. less, more D. less, less
Answer: Option A.
More more
Explanation:
Diverse groups are more able to provide for all of their members needs and tend to have more integration and communication than homogenous groups because they are made of of people who are different from each other and also have distinct characteristics. This is because they are more productive and perform better because they have expertise range of experienceand working methods that can boost problem-solving capacity and lead to greater productivity. They tend to have more integration and communication than homogeneous group because they bring broader ideas and new perspectives to the table and many members will be partaker of the community. This group of people are different from each other and have different perspectives compare to homogeneous group. They provide for their members because of abundance of resources provided .
Which of the following correctly explains why scientists believe that great apes like chimpanzees and gorillas are more closely related to humans than monkeys on an evolutionary timeline? (4 points)
Answer:
The reason is because apes have many human traits. First they look like humans. Second they are very intelligent like humans. Gorillas are smarter than monkeys. Third, monkeys have had tails for millions of years. Apes have evolved to not have tails.
Explanation:
Can I have brainleist, thanks , 5 star and tell me if I am right?
Answer: Honestly I think thats bogus but I guess it is a educated sci fi theory.
Explanation:
what is not a feature of natural selection
a) competition for resources
b) production of many offspring
c) selection by humans
d) variation within the population
Answer:
C
Explanation:
Selection by human is defiantly not natural selection. Selection by human is called selective breeding which is when two different breeds are put together to produce an offspring with special characteristics.
Hope it helps.
Which renewable resource is used MOST in all sectors of the economy? A. wind B. hydropower C. solar D. biomass
Hey Mate!!
Your answer is C. Solar.
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Answer:
B.
Explanation:
Hydropower.
Solar panels are expensive, biomass takes a lot of work, and wind turbines aren't very popular. Water-run power engines are very common throuought the world and are very effective.
Hope this helped and good luck! :)
An element with symbol 'y' is represented as 30 Y 65 . what is the atomic number and mass number of this element? Name the element 'Y'.
Answer:
Your atomic mass is 65 and atomic number 30. With this information, you'll find that this element happens to be Zinc, with 30 protons, 30 electrons and 35 neutrons on a stable level. There is also 4 energy levels. Hopefully this helps. Good Luck!
What impact did Suleyman I have on the Ottoman Empire?
He ended Mughal rule.
He introduced Hinduism.
He created a new legal system.
He enacted strict religious taxes.
Answer:
He created a new legal system.
Explanation:
Sultan Suleiman I of the Ottoman Empire was characterized by a lot of successes which includes the progress of the nation in terms of being a strong power in warfare and trade. He ensured there was an increase in revenue and effective usage of it in the Empire. Islam was the prevalent religion also and there wasn’t introduction of Hinduism.
He also ensured that there was the use of an accepted centralized legal system for the Ottoman Empire which validates the use of a new legal system.
Answer:
He created a new legal system.
Explanation:
took the test and got a 100%
what is the largest organ in human body?
Answer:
The liver
Explanation:
The liver is the largest internal organ in the body, which is about 3.5 pounds! Then, followed by the brain, lungs, heart, and kidneys.
Hope this helps you out! : )
Consider the formula for glucose: C6H1206. In the processes of photosynthesis, what supplies the hydrogen (H) used
in the formation of glucose?
Olight energy
carbon dioxide
O chlorophyll
water
In the process of photosynthesis, water H₂O supplies the hydrogen(H) used in the formation of glucose.
What happens during photosynthesis?Photosynthesis is a metabolic process carried out by certain cells of autotrophic organisms, that is, those that have the capacity to make their own food, such as plants.
With this process, plants capture the energy of sunlight and transform it into chemical energy, to produce organic matter(glucose).
Overall reaction during photosynthesis:
6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂
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What is a carcinogen?
O A. A chemical that is used to put out fires
O B. A chemical that improves the quality of gasoline
C. A chemical that is used in baking
O D. A chemical that causes cancer
DUBMI
Answer:
The answer is option D.A chemical that causes cancer
Hope this helps you.
Answer: D.
Explanation:
a chemical that causes cancer.
function of centriole is
Answer:
To help with cell division.
Explanation:
The centrioles form spindle fibers during mitosis and meiosis. The spindle fibers separate the chromosomes during cell division.
Answer:
The function of the centriole is to form spindle fibres in animal cells and move to opposite poles during cell division
Hope this helps
Identify which type of natural selection is described in each case below,
Results in the evolution of the species:
Results in new species
Favors traits at the two extremes:
No increase in diversity
One extreme trait is favored
Diversity decreases:
Diversity increases
DONE
Intro
Answer:
Results in the evolution of the species: Directional selection
Results in a new species: Disruptive selection
Favors traits at the two extreme: Disruptive selection
No increase in diversity: Stabilizing selection
One extreme trait is favored: Directional selection
Diversity decreases: Stabilizing selection
Diversity increase: Disruptive selection
Explanation:
Natural selection changes the allele frequency of a gene that produces an inheritable trait
The type of natural selection that takes place can be grouped into three categories based on their effect on allele frequencies including;
Directional selection
Stabilizing selection
Disruptive selection
In directional selection, a particular allele that has a higher fitness naturally increases its frequency in the population such. The process of directional selection is able to progress directionally so as to spread to the entire population
Stabilizing selection involves the reduction of the allele that has a cancelling effect on the desired phenotype and that can result the production of organisms with a fitness reduction. The stabilizing selection process can continue until the elimination of the deleterious allele from within the population
The disruptive selection process takes place between the the period of transition resulting in the alteration of the trait in in more directions than one.
Answer:
Results in the evolution of the species: Directional selection
Results in a new species: Disruptive selection
Favors traits at the two extreme: Disruptive selection
No increase in diversity: Stabilizing selection
One extreme trait is favored: Directional selection
Diversity decreases: Stabilizing selection
Diversity increase: Disruptive selection
Explanation:
Just got it right on edge 2021
The theory of plate tectonics helps to explain _____.
Which viral replication cycle is represented in part A of this diagram?
O A. Dormant cycle
OB. Replication cycle
C. Lysogenic cycle
O D. Lytic cycle
Answer:
The correct answer is - option D. lytic cycle.
Explanation:
The lytic cycle is one of the two viral reproduction cycle. Generally, it is the major reproduction cycle. In this cycle reproduction of the viruses takes place inside the host cell and produce more viruses. In the production of the more viruses the host cell and it''s destruction takes place in the end. The 5 steps that takes place are as follows:
1- attachment - viruses attach to the cell.
2-penetration- only nucleic acid or genetic material is injected into the host cell through the hole made by the tail fibers and enzymes.
3- synthesis - replication of viral nucleic acid and protein and envelope.
4- assembly - assembling of the new viruses formed.
5- release.
Thus, the correct answer is - option D.
Answer:
d
Explanation:
it’s right