Can someone help me with why a calorimeter has a lid? I’ll give brainliest. Thanks
Answers
Answer:
A calorimeter uses an insulated lid, or insulated surroundings. In the CAL2K the polystyrene surrounding is used as insulation to keep the heat of the liquid or solid sample during a reaction for an accurate measurement in the change of temperature to provide the best possible accurate results
Related Questions
what is the function of DNA and RNA
Answers
Answer: DNA codes for our genotype, which is the genetic representation of out traits. There are multiple kinds of RNA but it is mostly used to aid the replication of DNA.
Explanation: DNA is the strand of nucleic acid, sugars and phosphate group, that is found in the nucleus and mitochondria of every cell. It codes for our genotype, which is essentially the written representation of our traits. There are multiple kinds of RNA but they are mostly used to replicate DNA, they are single stranded as opposed to the double stranded DNA and include the nitrogen base uracil (U), instead of thymine (T). mRNA, tRNA and dsRNA are commonly used to replicate and regulate the DNA sequence.
Answer:
The two main types of nucleic acids are DNA and RNA. Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. DNA provides the code for the cell 's activities, while RNA converts that code into proteins to carry out cellular functions.
Explanation:
RNA:
The central dogma of molecular biology suggests that the primary role of RNA is to convert the information stored in DNA into proteins.
DNA:
The main role of DNA in the cell is the long-term storage of information. It is often compared to a blueprint, since it contains the instructions to construct other components of the cell, such as proteins and RNA molecules.
I HOPE IT HELPED
A personal trainer thinks her clients get better workouts and are stronger if they listen to music while working out. Over the next week, she divides her 20 clients into two groups of 10. For the first group, she plays music and sees if they can lift a barbell weighing 50 lbs. For the second group, she repeats the test but does not play any music. All 10 members of the music group could lift the barbell, but only 7 members of the no music group could lift the barbell. She concludes that her hypothesis was correct and decides to always play music for her clients.
Which group was the control group?
Answers
Answer:
The correct answer is: the group of 10 people that lifted the barbell with music is the control group.
Explanation:
The personal trainer made an experiment to test her hypothesis. When experiments are being made, is common to have a control group and an experimental group.
The control group is the one that is subjected to the usual conditions, the group that shows what normally happens. The experimental group is the opposite, this group is observed while it goes through an unusual condition that may impact how they perform in the task observed.
The personal trainer thinks that playing music for her clients is of benefit to them, so we can assume that she always plays music during the workouts, which means that the control group is the one that is listening to music while lifting a barbell. The group that worked out without music is the experimental group because they were the ones that performed that activity with a change in their normal environment.
How do the skin's 3 layers differ?
Answers
Answer:
Hi Tadashi Here!
Explanation:
Skin has three layers: The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.
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Which of the following options shows how energy is stored for immediate use?
immediate use?
a
Phosphate group added to adenosine diphosphate (ADP + P)
b
Phosphate group is added to adenosine triphosphate (ATP + P)
c
Adenosine diphospate has a phosphate group removed (ADP - P)
d
Adenosine triphosphate has a phosphate group removed (ATP - P)
Answers
Answer:
The answer would be A.
Explanation:
I don't have an explanation but I have this:
Which of the following is a polysaccharide often responsible for providing structure to plants? A. Amylose B. Cellulose C. Glucose
Answers
Answer:
Cellulose.
It's structural polysaccharide in plants
Cellulose is a polysaccharide often responsible for providing structure to plants
Option B is correct.
How do we explain?Cellulose is a polysaccharide that is made up of glucose molecules that are linked together in a long chain. It is the most abundant organic compound on Earth, and it is found in the cell walls of plants. Cellulose provides structure to plants, and it also helps to protect them from damage.
Amylose is a polysaccharide that is also made up of glucose molecules, but the molecules are linked together in a different way than they are in cellulose. Amylose is found in starch, and it is not as strong as cellulose. Therefore Option B is correct.
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please answer as many as possible
Answers
Answer:
in second assignment 1 - b
Explanation:
What are the 5 main steps into the formation of the Solar System??
Answers
Answer:
Step 1 of the formation of the solar system. the solar nebula collapses.
Step 2 of the formation of the solar system. rotating protostellar disk.
Step 3 of the formation of the solar system. center of nebula fusion begins, star is born.
Step 4 of the formation of the solar system
Explanation:
Finch species living on the Galapagos Islands exhibit a variety of beak types that favor different foods. Finches that eat seeds and plant parts have beaks of the shorter, thicker variety, while finches that eat insects and other small organisms have thin, pointed beaks. 78% of the finches on an island in the Galapagos have beaks that are identical to Finch 1. What conclusion can you reach about the availability of food for the finches on this island?
A)
There is an abundance of insects.
B)
There is an abundance of seeds and nuts.
C)
There is a wide variety of foods for the finches to eat.
D)
Plants have died out and there are only insects for food
Answers
Answer:
B) There is an abundance of seeds and nuts.
bio Trad Pretest Case Ms 2020-2021
Answers
Answer:
what
Explanation:
Answer:
So your question is?
Explanation:
Shivering when you get too cold is an example of which two concepts you learned about? (there are two answers) evolution metabolism homeostasis stimulus-response
Answers
How might my views
about the natural
world be influenced by
the results
of scientific
investigation?
Answers
James adds some magnetic marbles to a glass jar full of ordinary marbles, and then shakes up the jar. What do you think will happen to the magnetic marbles?
Answers
Answer:
Magnetic marbles will tend to attract each other.
Explanation:
Magnetic marbles are composed of ferromagnetic materials, which indicates that they function as a magnet and have the ability to attract other objects formed by ferromagnetic materials. In this case, we can say that the magnetic marbles attract each other and inside a jar containing magnetic marbles and common balls, the magnetic marbles will tend to attract and group together.
When James shakes the glass jar ; The magnetic marbles will attract each other
The magnetic marbles will attract each other because of the ferromagnetic materials that each magnetic marble contains. marble is a rock ( metamorphic ) that is made up mainly of calcium carbonate .
when rocks/compounds contain ferromagnetic materials they will act as magnets thereby attracting any metallic object or any magnetic material within close proximity. therefore the magnetic marble will attract each other inside the glass jar
Hence we can conclude that When James shakes the glass jar ; The magnetic marbles will attract each other.
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Where does mildew usually grow? Besides on clothes and wet/damp areas.
Answers
Answer:
Mildew thrives in damp, wet places like basements, attics and closed closets -- so strive to keep clothing as clean and dry as possible at all times. Clothing with grease or soiled spots encourages mildew growth, so don't leave dirty clothes on the floor or in the washing machine.
Explanation:
2. The hypotonic (0%) water had no dissolved salts in it. That means it was 100% water
molecules. The potatoes have only 99% water molecules in them. Should water move into or
out of the potatoes cell?
Answers
Q.4. I
are the basic unit of structure and function of all living
things.
a) Cells
c) Organs
b) Tissues
d) Organ systems
Q.5. The specific area where an organism lives is called its
a) niche
b) biomes
c) habitat
d) biosphere
Q.6. What is the highest level of organization of ecological systems?
a) Population
b) Biome
c) Community
d) Biosphere
Q.7.
a) niche
c) habitat
refers to the role of an organism in an ecosystem.
b) biomes
d) biosphere
Q.8.
is a large group of ecosystems characterized by similar
Answers
Answer:
4. Cell
5. Habitat
6. Biosphere
8.Biome
What is the purpose of greenhouse gases?
Answers
Answer:
A greenhouse gas (sometimes abbreviated GHG) is a gas that absorbs and emits radiant energy within the thermal infrared range. Greenhouse gases cause the greenhouse effect[1] on planets. Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0 °F),[2] rather than the present average of 15 °C (59 °F).[3][4][5] The atmospheres of Venus, Mars and Titan also contain greenhouse gases.
Explanation:
Darwin discovered twenty different species of finches in the Galapagos islands. He hypothesized that as new islands arose, finches
colonized the islands and rapidly changed into new species, depending on what food was available on each new island. The rapid
formation of many new species, as in this case, is called
Answers
Answer:
Adaption radiation
Explanation:
This process explains how organisms transform rapidly due to the changes within their environment. When a change occurs it created new challenges, new resources are available, as well open up to new environmental niches.
Is Bacteria made of many cells
Answers
Answer:
No it is a single cellular organism
If you were on the moon, and you were trying to move a 20-lb bowling ball and a 3-foot cube of Styrofoam, which item would take more work to move? Why?
Answers
Answer:
The 20 lb bowling ball would take more work to move. This is because it has more mass
Explanation:
It is the bowling ball that will take more work to move. The reason for this is simple. Mass is constant anywhere, whether it is on the moon or on the earth.
It is the acceleration due to gravity that is different in both places. Work as we all know is a factor of mass, the higher the mass, the more work it will take to displace the mass from its position.
Thus, because the mass of the bowling ball is greater, it will take more work to move than the styrofoam
You did an experiment where you want to test if a special kind of fertilizer will actually help your apple tree produce a lot of apples. To do the experiment you went to your local nursery and purchased two of the same kind of apple trees. You planted both trees in your sunny backyard , gave both of them the same amount of waterbut you gave one tree the special fertilizer and the other tree with the regular old fertilizer you've used before . After about a month , you noticed that the tree that got the special fertilizer grew over 100 apples than the other tree that grew about 40 apples . From this experiment , which of the following is considered the dependent variable ?
Answers
Answer:
Dependent variable: number of apples
Explanation:
In an experiment, the independent variable is the variable that isn't modified by the other variables measured in the experiment. In the example above indicated, the independent variable is the fertilizer used in the experiment. On the other hand, the dependent variable is the variable tested or measured in the experiment, thereby this variable is 'dependent' of the independent variable.
What do optical telescopes collect and magnify?
Answers
Answer:
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
Please help me answer this as fast as possible!!!!
Answers
Answer:
Are the basic unit of life.
Explanation:
Well, every organism is made up of cells. Thus, they are the basic units of life.
Random Fun Fact:
BTW i thought this was worth mentioning, did you know that humans share 70% of their DNA with a slug?
Explanation:
The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.
Fill in the blank - ____________ is the use of electronic instruments to monitor and physiological changes mostly regulated by the autonomic nervous system.
Answers
Answer: Biofeedback
Explanation: it mostly helps with body functions such as blood flow, blood pressure, and heart rate.
Biofeedback is the use of electronic instruments to monitor and physiological changes mostly regulated by the autonomic nervous system.
What is autonomic nervous system?
"The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiologic processes."
What is the main function of autonomic nervous system?
"The autonomic nervous system regulates certain body processes, such as blood pressure and the rate of breathing."
What do you mean by biofeedback?
"Biofeedback is a technique you can use to learn to control some of your body's functions, such as the heart rate."
What is the basic principle of biofeedback?
"This technique involves using visual, physical and/or auditory feedback to guide the patient to give their optimal performance."
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NEED RN! MARKING BRAINLIST WORTH 100!! Put in order from SMALLEST to LARGEST how the structures of plants, animals, and fungi are organized.
organ, cell, organ system, tissue, organelle, organism.
Answers
Answer:
organelle, cell, tissue, organ, organ system, organism
Answer: organelle, cell, tissue, organ, system, organism
Explanation: this is the correct answer...
Prompt 3: Why do you think it is so
important to have producers
(autotrophs), consumers
(heterotrophs), and decomposers
(detritivores) in an ecosystem?
Answers
Answer:
there will have to be something to produce all the food so that other animals can eat
Explanation:
the consumers are important as when they eat they can have a high possibility to not starve to death as they have competition and can reproduce and then there is a possibility that that animal species may not become extinct
also when u eat u decompose so they are inportant as they decompose
as when they decompose they lay fertilisers for the soil in the floor so that other plants can grow amd flourish so the cycle can continue
Researchers propose a model to explain variation in phytoplankton cell sizes in a marine
environment. They base their model on the idea that smaller cells absorb nutrients more
efficiently. The researchers predict that the mean diameter of phytoplankton cells will
change by 50 micrometers for every 5-kilometer increase in distance from the shore
because of a gradual decrease in nutrient availability. To test their model, the researchers
determine that the phytoplankton cells found closest to shore have a mean diameter of
900 micrometers.
Based on the model, what will be the mean diameter of the phytoplankton cells that are
found 25 kilometers from shore?
Answers
Answer:
650 micrometers
Explanation:
The night sky is filled with images of wild animals. Which animal is the circled constellation named after?
scorpion
serpent
snake
salamander
Answers
Answer:
Scorpion
Explanation:
Answer:
A
Explanation:
ANSWER QUICK PLS!!
What part of a greenhouse is similar to the greenhouse gases in Earth's atmosphere?
- the plants
- the glass
- the soil
- the sunlight
Answers
Which of the following is an example of an abiotic factor?
A. Plants
B. Sunlight
C. Food
D. Animals
Answers
Answer:
B. Sunlight
Explanation:
Abiotic factors are nonliving parts of an environment and it has major influences on living organisms.
What is it called when you make a logical interpretation based on your
observations/research?
Answers
Answer:
it is anything but the what u see in the expirment in ur question