Answer:
it th chemical reactions because the reactif is transformed into a new products
how can you walk under water?
Answer:
by taking oxygen heavy bottle for respiration and to touch a ground.
Which two characteristics describe organisms in the kingdom Animalia?
A. They are heterotrophic
B.They are unicellular
C. They are multicellular
D.They have prokaryotic cells
This is a multi (two) answer
Answer:A and C
Explanation:
Answer:
A and C
Explanation:
All members of Animalia are multicellular, and all are heterotrophs (that is, they rely directly or indirectly on other organisms for their nourishment). Most ingest food and digest it in an internal cavity. Animal cells lack the rigid cell walls that characterize plant cells.
I also did the test and got it right.
If a DNA molecule is 24% Thymine, which one of these is correct?
A. Adenine is also 24%, Cytosine is 26%
B. Cytosine and Guanine have a total of 48%
C.Guanine is 26% and Cytosine is 24%
D. A and B are correct
Answer:
D
Explanation:
D is the correct answer i think and I'm sorry if it's not
The size of a food chain can vary, but the number of levels that a food chain can reach is limited. Why does this limit exist ?
Answer:
Energy is lost at each trophic level.
Explanation:
hope this helps have a good rest of your day :) ❤
Energy is lost at each trophic level.
What is food chain ?
Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism.
What is tropic level?
Trophic level is defined as the position of an organism in the food chain and ranges from a value of 1 for primary producers to 5 for marine mammals and humans.
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Describe three types of natural selection for a polygenic trait
Answer:
I not sure about this question. If this wrong, I'm sorry.
Explanation:
1.Stabilizing Selection
2.Directional Selection
3.Disruptive Selection
Hope this helps.
How many molecules of NADH are formed in the citric acid cycle from one molecule of glucose?
a. 2
b. 6
c. 1
d. 3
Why does asexual reproduction result in offspring with identical genetic variation? Use the examples that you studied earlier in this lesson to support your answer.
Answer:
The reason asexual reproduction results in identical offspring is because the DNA is replicated exactly from the parent to the daughter. One example is bacteria.
Explanation:
Answer:
Sexual reproduction results in offspring with genetic variation due to the multiplication brings about limitless prospects of hereditary variety. The examples, that can be studied to support this would be at the end of the day, sexual generation brings about posterity that are hereditarily extraordinary. They vary from the two guardians and furthermore from one another. This happens for various reasons.
Explanation:
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When organisms grow, what happens to their cells?
A- the cells continue to get larger
B- they increase in number
C- both a and b
D- neither a nor b
Answer:
B.
Explanation:
whenever a organism grows the cells seperate to make up more room for the organism to keep growing until adulthood to elderly-hood
There are 10 pieces of candy in a bowl and 2 of them are chocolate. What percentage of the pieces of candy in the bowl are chocolate?
Answer:
20%
Explanation:
2 out of 10 is the same as 20 out of 100. So 2/10 = 2/100 or 20%
Why would plant cells become wilted in a concentrated sugar solution?
A:They lose water by osmosis
B:They are not receiving enough light
C:They lose water by active transport
D:They gain water by osmosis
PLEASE ANSWER I'll love you forever
which structure is represented by letter b
A.ribosome
B. tRNA
C.Nucleus
Answer:
the leeter b is sturcture by option A:ribosome
What issue might be present in the soil if the ration to Nitrogen (N), Phosphate (P)
and Potassium (K) are sufficient, but the leaves of a
plant are showing phosphate and potassium deficiency?
Answer:
Low level of nitrogen in the soil.
Adding organic materials poor in mineral nitrogen to the soil, which encourages the subsistence of soil microorganisms on mineral nitrogen to break down these materials, and this causes a temporary reduction in the proportion of mineral nitrogen in the soil.
Soil drought.
Problems with root growth due to soil compression or disease.
What was the Scientific Revolution of the mid-1500s and 1600s? What is the scientific method? List the major steps of the scientific method. What are the lasting consequences of the scientific revolution?
Answer:
Question: What was the Scientific Revolution of the mid-1500s and 1600s?
Answer: Before the mid-1500s and 1600s, Scientists feed on ancient scholars scientific materials and what the church explains through the Bible of how God created the universe and the people that lived in the world. The interest people have to observe their natural environments, coupled with the rise of more educated scientists led to the Scientific Revolution which uses observation of the natural world, experimentation, and a well-followed scientific method to discover the world.
Question: What is the scientific method?
Answer: During the mid-1500s and 1600s scientists developed a method called the scientific method with the aim to lay emphasis on observing the natural world and experimentation to test hypothesis. Making them start thinking like scientists instead of accepting unproven theories.
Question: List the major steps of the scientific method.
Answer:
1. Observation
2. Experimentation
3. Logical Ideas
4. Hypothesis
Question: What are the lasting consequences of the scientific revolution?
Answer:
1. It shaped the way people think and make people question and observe their environments.
2. It embraces the acceptance of proven and tested theories rather than some mystical beliefs.
can a theory be created by just one person ?
Answer:
Theories can be created by just one person
YesExplanation:
What normally happens is that one person creates a theory, and as years go by new research comes out further advancing or modifying a theory. The theory then is created by many people. Which overall still means that theories can be created by just one person.
Do you believe in evolution? , why or why not?
Answer: No, I don’t believe in evolution, I *KNOW* that evolution is a fact because THOUSANDS of scientists over the past couple of centuries have built up a body of evidence which makes the theory of evolution one of the best supported theories in all of science. -quora (not made by me its just to help u out)
ice floats on water because ice is less dense than water, how is this helpful to fish tnat live in a lake
How does mutating the DNA affect the organism?
name and describe the process occurring in the nucleus which results in the formation of an mRNA molecule
Messenger ribonucleic acid (mRNA) is the single-stranded biological molecule that resembles the hereditary sequence of the gene and is needed for coding the proteins molecules essential for cell function and growth.
Transcription is the process that occurs in the nucleus.
What is the process that synthesizes the mRNA?mRNA is the biological molecule that gets formed from the double-stranded DNA molecule by the process of Transcription in the nucleus of the cell.The replicated DNA undergoes a transcription process and it's one strand transcripts to form a single strand of the mRNA molecule with the help of the transcription factors.One of the DNA strands acts as a template for the formation of the pre mRNA molecule with the help of the RNA polymerase II enzyme. The pre molecule formed undergoes an elongation and the termination process and the final mature mRNA is formed.Therefore, transcription results in the formation of the mRNA.
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root hair cells have a high ion concentration . explain how this is maintained and its importance
Answer:
Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria , which release energy from glucose during respiration in order to provide the energy needed for active transport.
Explanation:
To maintain the concentration gradient and so the constant movement of water into the root hair cell by osmosis, the root hair cell actively transports mineral salts into the cell.
Root hairs are important because they absorb the majority of the water and nutrients required by the plant. The root hair cell actively transfers mineral salts into the cell to maintain the high ion concentration.
Root hairs, also known as absorbent hairs, are outgrowths of epidermal cells, which are specialized cells found at the root's tip.Root hairs are important because they absorb the majority of the water and nutrients required by the plant. In legume plants, they are also directly involved in the production of root nodules.The root hair cell actively transfers mineral salts into the cell to maintain the concentration gradient and hence the continual passage of water into the cell by osmosis.
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Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
The Ring of Fire or also known as the Circum-Pacific Belt
Hope that helps!
Answer:
the circum-pacific system A surrounds the pacific ocean.
Explanation:
proteins are made at the ?blank
Answer:
below
Explanation: Ribosomes cell
How do keystone species shape communities?
Explanation:
A keystone species is an organism that helps define an entire ecosystem. By keeping populations of mussels and barnacles in check, this sea star helps ensure healthy populations of seaweeds and the communities that feed on them—sea urchins, sea snails, limpets, and bivalves.
Answer:
By keeping populations of mussels and barnacles in check
How are the properties of water
essential to life on Earth?
Explanation:
water is essential for all living things. Water's unique density, high specific heat, cohesion, adhesion, and solvent abilities allow it to support life.
ng living
Thought Provoker
The house sparrow (or English sparrow) is one
of the most common birds in the world, living
on every continent except Antarctica. This bird's
scientific name is Passer domesticus; what is the
house sparrow's genus name?
maeus
ig ok i m not sure its genus name is Passer as per how much ik
I m really sorry if its wrong
R. Scientific errors are factors that could have contributed to the uncertainty in the outcome of your experiment. Could measurements have been more accurate? Could you have performed more trials? Could environmental factors, such as the lab's lighting or temperature, have had an effect? State these possible sources of error and analyze or estimate how much they may have affected your results.
Answer:
Yes.
Explanation:
Yes, measurements should be more accurate if these scientific error are removed. Yes, we must perform more trials in order to verify the experiment. Environmental factors, such as the laboratory's lighting or temperature, has a great effect on the experiment and can cause error. In this experiment the errors occur such as instrumental, environmental, procedural, and human. All these error causes inaccurate readings of experiment so greatly affect the experiment.
What characteristic have helped humans survive major changes in the environment? the ability to adapt to new conditions the ability to outsmart predators the ability to run the ability to write and speak language
Answer:
Characteristics that have helped humans survive major changes in the environment are their brains and body. Human's social cooperation with tool making always increases.
Survival of the fittest explains the mechanism of natural selection. The ability to adapt to new changes has helped humans survive major changes in the environment.
What is adaptation?Adaptation is the ecological process that is the process of the adjustment of the structures, behaviors, and physiology of the organism to suit the altered environment.
It is the variation that increases the fitness of the organism so that it can survive and reproduce in a specific environment. It is a dynamic evolutionary method, that is essential for the sustainability of the organisms.
Therefore, option A. the ability to adapt to new conditions has helped humans survive.
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What can be the outcome of a conclusion that has been verified various times?
Answer:
Positive
Explanation:
Name the type of the leaf when its lamina is entire or when incised?
Answer:
compound
Explanation:
A leaf is said to be simple, when its lamina is entire or when incised, the incisions do not touch the midrib. When the incisions of the lamina reach up to the midrib breaking it into a number of leaflets, the leaf is called compound
lab safety equipment alternatives
Answer:
Fume Hoods
Fume hoods provide a barrier between laboratory workers and hazardous chemicals or chemical processes. The key item of fume hoods to make it function well is its ability to exhaust vapor/gas at a certain flow rate.
Flammable Liquid Storage Cabinets
Fire hazard from flammable liquid shall be adequately controlled, including by using storage cabinets. Always store the flammable liquid inside the storage cabinet.
Fire Extinguishers
Provide appropriate fire extinguishers for the laboratory in adequate quantity. Place them in the right location for easy access, high visibility, and free from any obstacles.
Fire Blankets
A fire blanket is one of the most important fire extinguishing equipment. When you find a fire for the first time, use this fire blanket to diminish the fire as soon as possible before it grows bigger.
Safety Cans
You must use safety cans to store flammable liquid in the laboratory safely. It minimizes fire accidents and so protect laboratory workers from the fire hazards.
Safety Showers
When chemical splash occur, you have to immediately wash all of your work cloth and body with plenty of water. So, that’s why safety showers role are very important in case of such emergency condition.
Eyewash Stations
Even though you have already worn safety goggle, but it does not mean that your eyes are fully protected from chemical splash hazard.
The possibility still exists. Because of this reason, you need to make sure that an eyewash station is available in the laboratory.
Chemical Spill Kits
Chemical spill kits are required for handling hazardous chemical spills in the laboratory. The key is to provide the kits in enough quantity and place them on the appropriate location.
First Aid Kits
Make sure that the first aid kits is available in the laboratory and the content is complete. Inspect regularly the content and immediately add first aid kits item if already used up.
Personal Protective Equipment
You must provide all basic personal protective equipment for every lab analyst; lab coat, apron, eye goggles, nitrile gloves, and face shield.
Explanation:
What's the independent , dependent and control variable of the is experiment (bromothymol blue experiment)
Answer:
we can't tell you if you don't tell us what the experiment is regarding bromothymol blue