The density of the unknown liquid sample will be 4.0 g/.mL
What is density?The density of a substance is the ratio of the mass of the substance to its volume.
This is mathematically expressed as:
Density = mass/volume.
In this case:
Volume of unknown liquid sample = 24.0 mL
Mass of unknown liquid sample = 6 g
Density of the unknown liquid sample = 24.0/6
= 4.0 g/mL
Thus, the density of the unknown liquid sample us 4.0 g/mL
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Which two statements explain why nitrogen is important to sustaining a
healthy ecosystem?
A. Nitrogen makes up many of the biomolecules that living things
need in order to function.
B. Plants can take up nitrogen from the air through their leaves.
C. Animals and plants need nitrogen in order to grow and reproduce.
D. Plants use nitrogen during photosynthesis to produce sugars.
SUBMIT
According to the research, the correct options are A and C. Nitrogen makes up many of the biomolecules that living things need and also, animals and plants need nitrogen in order to grow and reproduce.
What is Nitrogen?It is a gas that is the most abundant compound in the atmosphere of our planet, being vital for the existence of animals, plants and even human beings since nitrogen cannot be fixed from its gaseous form (N2).
In this sense, this element is an essential compound for the structure and functions of cells, and for all the reactions in it since it makes up amino acids, proteins, nucleic acids and DNA, being an important nutrient that all plants and humans require for proper growth.
Therefore, we can conclude that according to the research, the correct options are A and C. Nitrogen makes up many of the biomolecules that living things need and also, animals and plants need nitrogen in order to grow and reproduce.
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Answer: Nitrogen is a nutrient that plants need for healthy growth.
Nitrogen is part of many of the biomolecules that make up living things.
Explanation:
bruno mars wondered if the day of the week impacted how many fans attended his concerts. he performed his concert on a tuesday, friday, saturday.
Tuesday 28,117. friday 32,586. saturday 31,794
what are the 3 constant variables?
Constant variables are all the variables whose values or states remain the same in an experiment to avoid their influence on results. Constant variables that could apply to the experiment: City, Schedule, Ticket Cost.
What is a constant variable?
Several variables are involved in an experiment. Among them are the ones in which the researcher is interested and the ones that are not of interest.
Constant variables are the ones in which the researcher is NOT interested. But since these variables might influence the results, the researcher needs to keep them constant to avoid affecting the dependent variable response.
So, constant variables are all the variables whose values or states remain the same in an experiment.
In the exposed example we need to identify three POTENTIAL constant variables. So first, we will identify the question, the independent and dependent variables, and then we will propose the three constant variables.
Question: Did the day of the week impact on how many fans attended the concerts?
Independent variable: days of the week
Dependent variable: number of fans attending the concert
Constant variables:
Concert city -Chicago-, Concert schedule, Cost of the concert ticket.These variables must be kept constant in this experiment because they might influence the results if they change.
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Complete question,
Part One: For each of the following examples, identify the independent and dependent variables and list three (3) constant variables that COULD apply to the experiment. Remember: there are probably more than just 3 constant variables in an experiment.
Bruno Mars wondered if the day of the week impacted how many fans attended his concerts.
He performed his concert on a Tuesday, Friday, and Saturday in Chicago
Tuesday: 28,117 fans Friday: 32,586 fans Saturday: 31,794 fansVariables
Independent variable: Dependent variable: 3 constant variables:Which functional group has a double bond within it?
Describe the function of the following in cellular respiration (be specific):
NAD/NADH
electron transport
ATP synthase
oxygen
The function of the following in cellular respiration are energy storing, production of ADP, carry ATP molecules and acceptor.
Briefing :NAD/NADH is an electron carrier that is used during cellular respiration to temporarily store energy.
Adenosine triphosphate (ATP) synthase is to produce ATP in the F1 sector from ADP and inorganic phosphate (Pi).
Electron transport is the process of transferring energy from electron carriers to more ATP molecules.
As the last electron acceptor in cellular respiration, oxygen plays this role.
Cellular respiration :A series of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily reactions. Glycolysis, the citric acid cycle, and oxidative phosphorylation are the three main processes that take place during cellular respiration.
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Why were antibiotics created?
Antibiotics were accidentally created. It was created then to kill the bacteria present inside the body, and they affect the health of the body.
What are antibiotics?Antibiotics are antibacterial medication that is used to cure diseases caused by bacteria. They were first created by Alexander Fleming. It was a powerful discovery that is done to kill bacteria.
Antibiotics were proved to be very useful to prevent infection and death from infections.
Thus, inadvertently, antibiotics were developed. At the time, it was developed to eradicate the germs that reside inside the body and compromise bodily health.
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Diatoms are one of the most common types of phytoplankton in marine habitats. Like plants, diatoms contain chlorophyll and produce glucose from which of the following?
A. O2 and ATP
B. CO2 and O2
C. ATP and H2O
D. CO2 and H2O
Answer: Co2 and H2O.
Explanation: In the process of photosynthesis, glucose, and oxygen are produced using CO2 and H2O.
I had biology last year, and it was my favorite subject! I really hope this helps!
A dehydrator runner drinks a lot of water after race he or she rehydrate because 
Answer:
Water helps regulate their temperature and gives energy to the cells which are tired and can't function as good after using the energy for the race.
Explanation:
Heat
Assignment Active
Defining Heat
What is heat?
Heat is the energy needed to change the temperature of 1 g of a substance by 1°C.
Heat is the average kinetic energy of the particles of a substance.
Heat is the total energy of a substance due to the movement of its particles.
Heat is the energy that flows between two substances of different temperatures.
Answer:
umm what syour question?
Explanation:
A bird or fish if there is a loss or change in energy
birds and Fish need energy to maintain basic metabolic activities and to support growth, reproduction, activity, and health. Proteins, carbohydrates, and lipids (the macronutrients) provide this energy and also some essential nutrients.
What are the energy sources of fish and birds?Protein is a major energy source for all fish and birds, and it appears that blood glucose may derive more readily through gluconeogenesis than directly from dietary carbohydrates.
Whit this information we can conclude that Protein is used for fish growth if adequate levels of fats and carbohydrates (energy) are present in the diet. If not, the more expensive protein can be used for energy and life support rather than growth.
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Instructions
Directions: Cigarette smoke contains thousands of chemicals. Many are toxic and some are linked to cancer. Smoking leads to negative effects on many systems in the body, including the cardiovascular, integumentary, respiratory, digestive, reproductive and central nervous system.
Using all available resources, perform RESEARCH to obtain information about THREE of the chemicals found in cigarette smoke. You should include: (A) Toxic effects (B) Symptoms of overdose (C) Other uses of the chemical
Create a Poster; a 30 second commercial; or a Brochure; in essay format if you would like. But you must include information that has an emphasis which teaches the community about the harmful effects of smoking on the body.
Nicotine in cigarette smoke mixes with the blood and reduces the affinity of haemoglobin for oxygen uptake. It decreases potential function of the lungs. Nicotine works as stimulant as well as depressant for CNS. Overdose may lead to addiction and liver cirrhosis.
What is drug addiction?The overdependence or excessive consumption of certain chemical drug by the user leads to its addiction. Drug addiction is a social stigma and is commonly observed in the adolescents and youths.
Drug addiction poses harmful effect on the physical, mental, emotional and social well being of a person. It makes them isolated from the society and indulges them in destructive or sometimes violent activities.
Drugs can be stimulants, depressants, sedatives, hallucinogens etc. Consumption of any of these can lead to addiction in the long run. It is extremely difficult to withdraw the use of drugs once the person is addictive to it.
Drug addiction withdrawal requires deep therapeutic counselling by the practitioners. Rehabitalization centres are available for people suffering with drug addiction.
Thus, drug addiction should be dealt with empathy and care.
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6. How many different proteins, 15 amino acids long, could you make given an unlimited number
of each of the 20 amino acids?
Answer:
3816543
Explanation:
20^15 or 3.28. 10^19
That is roughly equivalent to 4.3 billion times the world population today (in just 20 amino acids). The beauty of proteins is their complexity and seemingly infinite possible permutations. Moreover, a single polypeptide chain can have many different tertiary structures. Polypeptide chains can then join together to form quaternary structures. Among these proteins can be an antibody for ovarian cancer, an antimalaria haemoglobin or a antitoxin for heavy metals. There are just so many proteins we do not know yet.
How did the Avery experiment expand on Frederick Griffith's observations?
Answer:
Avery expanded on Griffith's observations by demonstrating that it is the DNA, and not the proteins, that is responsible for the genetic information.
Explanation:
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A partial meadow food web is shown
here. Based on this food web, which
B
organisms are direct sources of
energy for secondary consumers?
Aphid, Bird, Rabbit.
Ladybug, Fox, Dragonfly.
Frog, Butterfly, Berries.
Mouse, Snake, Hawk.
The partial meadow food web shown in which the organisms Aphids , Bird , Rabbit are direct sources of energy for secondary consumers.
The food chain are important part of ecological system as it connects the organism on the basis of food habits.When different food chain connects together to formed the food web.The food web consists of different trophic level.This trophic level divides into two level that is 1) autotrophs and 2) heterotrophs.The feeding relation are divided into herbivory , carnivory , parasitism , scavenging etc.The basal specious are plants which absorb sunlight for food.the secondary trophic level is heterotrophs animals and the third trophic level is carnivorous animals.Therefore The Aphid, Bird, Rabbit are interconnected with each other through the food habits.
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1.
If you were to compare the nucleus to a part of your body, which of the following would be the best choice?
a. your eyes
b. your arms
c. your feet
d. your brain
Answer:
Brain...
Explanation:
why is it important to classify living organisms?
the DNA of organisms may be more easily analyzed.
organisms may survive longer if they are classified.
scientists may study and discuss organisms more easily.
classifying is needed before scientists may make observations.
Answer:
scientists may study and discuss organisms more easily
Explanation:
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Temperatures in the
Gobi Desert reach -40°F in the winter
and 90°F in the summer. Find the range
of the temperatures.
The range of temperature is 130 degree.
Here, highest temperature is 90 °F
Lowest temperature is -40°F
The range of temperature is given as
⇒ highest temperature - Lowest temperature
=90-(-40)
=130 °F
Temperature range is the difference between the maximum and minimum temperatures or between the highest and lowest mean temperatures during a specific time interval, for example, daily, monthly, or seasonal.
There are three temperature scales used today, Fahrenheit, Celsius and Kelvin.Fahrenheit temperature scale is a scale based on 32 for the freezing point of water and 212 for the boiling point of water,
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(30 POINTS) how do plants maintain homeostasis? (free write)
Answer: Hello: )✨ how do plants maintain homeostasis? is easy so as we should know that As water leaves the plant tissues into the atmosphere, it takes energy with it in the form of heat. Much like when we sweat, this allows the plant to cool and maintain homeostasis. we should also know that most Plants take in carbon dioxide and release oxygen. Did you know they also regulate how much they take in and let out? Leaves have stomata, holes on the underside, that expand and contract to get just the right combination. That's homeostasis.
Explanation: Environmental factors may affect the plants. However, they maintain the internal conditions by self-regulation, known as homeostasis, to adjust to the changing environment. This includes maintenance of the plant's internal temperature and fluid.
Hope this helps <3
Answer:
Transpiration provides evaporative cooling. As water leaves the plant tissues into the atmosphere, it takes energy with it in the form of heat. Much like when we sweat, this allows the plant to cool and maintain homeostasis.
Explanation:
Help! Will give brainly
Answer:d
Explanation:imright
What is the speed of a car Wich travels 45 miles in 3 hours
3 hours total
Travel 45 miles total
45/3=15
So the car is traveling at an average speed of 15 miles/h
Answer:
15
Explanation:
i just did the math
How is the density of an object determined?
Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). Remember, grams is a mass and cubic centimeters is a volume (the same volume as 1 milliliter). from edinfomrmatics.
Explanation:
Do you believe it is important for a human to have a basic understanding of science? Why or why not?
Give two reason for explaining.
Answer: Yes.
Explanation: Why?
Having a basic understanding of science, on a large scale, has allowed humans to advance and go through evolution throughout time. But based on today, and what we see everyday, science is apart of our everyday lives. Science is the way we know what is good for our body and what isn't. Science is what allows us to maintain healthy, what foods help out these body systems?
The answer I have provided might be a small paragraph, but I hope you can take something out of it. It could also set up an example for an answer of your own! :)
Conservation is using materials and resources wisely to protect the environment. Describe a way that you could practice conservation in the activity.
Conservation is using materials and resources wisely to protect the environment.
Conservation activities involve businesses, international organizations, and certain governments. The UN promotes the establishment of national parks all around the world. In order to increase awareness of and water conservation, the UN also created World Water Day.Governments pass legislation outlining the proper use of land as well as the locations that should be preserved as parks and wildlife refuges. Along with enforcing these rules, governments also require industries to build pollution-control equipment in order to safeguard the environment. Last but not least, governments frequently offer incentives for resource conservation, the employment of clean technology, and the recycling of obsolete items.There are several global organizations devoted to conservation. Members advocate for causes including preserving rain forests, defending endangered species, and purifying the air. The IUCN (International Union for the Conservation of Nature)To know more about Conservation visit : https://brainly.com/question/17913006
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_______ is using Earth's natural capitol in a way that ensures the resource will replenish in a relatively short time.
a. Natural Resource
b. Sustainability
c. Environmental Science
d. Renewable
Answer:
B - Sustainability
Explanation:
When we do things sustainably, we keep in mind what resources we are using, how much we are using, how quickly they will be replenished, and how it will affect others/the environment.
Answer:
Environmental science
Name this Sedimentary Rock: ___________
This sample has a gritty feeling like coarse sand paper
Answer:
sandstone
Explanation:
Sandstone is made up of tiny sand grains that've been cemented together. Sandstone usually has a rough, granular texture, like sandpaper.
8. In which ranges of pH will amylase cease to function?
Click or tap here to enter text.
The pH level of 4.5 to 7 was discovered to be where -amylase functions at its best. The activity of the enzyme is reduced when the pH of the enzyme solution is lowered below this range.
Nearly all animals have a significant amount of amylase in their pancreas. However, it is also present in many species' livers, salivary glands, and small bowel mucosa; the levels of amylase in these tissues vary greatly between species. The ideal pH for the interaction between starch and amylase is 7. The rate of reaction will be slowed down by PH levels that are high or low than this number. Between pH 3 and pH 11, amylase is active. The morphology of a site of the enzyme is impacted by PH variations, which has an impact on the enzyme's capacity to bond with its adsorbates. Amylase levels that are high in the blood or urine can indicate: Acute pancreatitis (sudden) - an obstruction in a pancreatic duct, a tiny tube either benign (non cancerous) tumor or pancreatic cancer.
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Medical researchers have developed a new cream for treating skin rashes. To test their cream they set up an experiment where one group of patients used the new cream for two weeks, and a second group used no cream.
In each group, the number of people whose skin condition got better and the number whose condition got worse are recorded below. Because patients do not always complete studies, the total number of patients in each of the two groups is not exactly the same.
Of 298 patients who used the cream, 223 found their rash got better and 75 found their rash got worse.
Of 128 patients who used no cream, 107 found their rash got better and 21 found their rash got worse.
What numbers should you compare to determine whether the cream is effective?
1) 298 v 128
2) 223 v 107
3) 75 v 21
4) 75/223 v 21/107
5) 223/330 v 75/330
6) 223/298 v 107/128
7) 223/298 v 75/298
Answer: #6
Explanation:
For each group, find the ratio of #patients better/total # of patients
In this case, it would be 223/298 and 107/128. These ratios can be used for further calculations.
Lion Phylogeny: Finding connections Based only on eht DNA which populations do you think live closer in proximity to each other
The depiction of the evolutionary history and connections between groupings of species is known as phylogeny. The findings are shown in a phylogenetic tree, which shows connections based on common or divergent morphological and genetic features.
The word "phylogeny" comes from Haeckel's 1866 introduction of the German Phylogenie, and the Darwinian approach to categorization got recognized as the "phyletic" approach.
By observing the given DNA samples of the different lion species, we can say that Cameroon, Tsavo, Fannie Roberta, Umfolozi, Zimbabwe, Zambia, and Kalahari lions are linked together and divided from Sabi sands, Botswana, and Etosha lions due to differences in their cytochrome b gene. The complete division will be as follows.
This phylogenetic tree explains that all the given species have originated from a common ancestor who had T (thymine) nucleotide in the DNA at some sites. The thymine changed to C (cytosine) to develop new species. This change was done by a point mutation.
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Kathy used a survey to determine how many of her classmates were left-handed and how many were righy-handed. Kathy's survey falls under which step of the scientific method?
A. Hypothesis
B. Problem/Question
C. Experiment
D. Analyze
How is the nucleus, the rough endoplasmic reticulum, the Golgi apparatus and vesicles involved in making sure that cells have the proteins they need?
The cell nucleus contains genes to generate mRNAs which are translated into proteins that pass to the endomembrane system to be processed into final proteins.
What is the endomembrane system?The endomembrane system is a group of organelles and structures inside the cell (i.e., the rough endoplasmic reticulum, the Golgi apparatus and vesicles) that act in a sequential form to process proteins and transport them to their final destination within the cell or exported to outside the cell.
This system acts together the cell nucleus whose function is to store the genetic material (DNA) required to produce proteins in their prior form (before folding and processing).
In conclusion, the cell nucleus contains genes that generate mRNAs which are translated into proteins that pass to the endomembrane system (rough endoplasmic reticulum, the Golgi apparatus and vesicles) in order to produce final proteins.
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Which conclusion is best supported by Daniel’s observations and discoveries?
Star X is more luminous than both stars Y and Z.
Star X is more luminous than star Z, but not star Y.
Star Y is more luminous than star X.
Star Z is more luminous than star Y.
A conclusion which is best supported by Daniel’s observations and discoveries is that: A. star X is more luminous than both stars Y and Z.
What is a star?A star can be defined as a giant astronomical object that contains a luminous sphere of plasma and two (2) main hot gases (hydrogen and helium), and it is bounded together by its own gravitational force. Also, some examples of a star include the following;
Antares.Canopus.Betelgeus.Sun (closest to planet Earth).Vega.What is luminosity?Luminosity is sometimes referred to as brightness and it can be defined as an absolute measure of the total amount of light energy that is emitted by a celestial (astronomical) object such as a star, per unit time.
Based on the astronomical records and information, the luminosity and apparent brightness a celestial (astronomical) object such as a star is highly dependent on distance.
In this context, we can reasonably infer and logically deduce that star X is more luminous than both stars Y and Z because star X is farther away from planet Earth than the other stars Daniel observed while star Z is closest to planet Earth.
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Complete Question:
Daniel observed and compared some stars at night and recorded his observations in a chart. Daniel later discovered that star X is farther away from Earth than the other stars he observed, and star Z is closest to Earth.
Which conclusion is best supported by Daniel’s observations and discoveries?
A. Star X is more luminous than both stars Y and Z.
B. Star X is more luminous than star Z, but not star Y.
C. Star Y is more luminous than star X.
D. Star Z is more luminous than star Y.
