Answer:
A scientific question is one where an investigation can be designed and completed to find out the answer without having to do multiple, entirely different investigations to get there. In a word, a scientific question is testable, but a non scientific question is not.
Look at the image above. How did endosymbiosis impact the structural differences between bacteria, animals, plants, and fungi? CLAIM: EVIDENCE: REASONING:
Answer:
What role did endosymbiosis play in the evolution of eukaryotes? Endosymbiosis led to the evolution of eukaryotic cells with mitochondria and chloroplasts. This kind of natural selection led to the evolution of eukaryotic cells and the plants and animals we see today.
Explanation:
Endosymbiosis is important because it is a theory that explains the origin of chloroplast and mitochondria. It is also a theory that explains how eukaryotic cells came to be. DNA, RNA, Ribosomes and Protein Synthesis
This provided the first substantial evidence for the endosymbiotic hypothesis. It was also determined that mitochondria and chloroplasts divide independently of the cell they live in.
Evolutionary processes have resulted in approximately _____________ million species, of which 1.4 million species have been described.
Answer:
1.mm
Explanation:0000000044444444444
Which of these statements about molecules is true? A. All molecules only contain one element
B. Two or more molecules can combine to form an atom
C.the elements in a molecule are always present in equal proportions.
D. The atoms in a molecule cannot be separated from each other by physical means
Answer:
D
Explanation:
The atoms in a molecule cannot be separated from each other by the means of physical force because they are bound to each other through chemical bonds. Thus, the correct option is D.
What are molecules?Molecules are a group of two or more similar or different atoms that form the smallest identifiable unit which can be divided into pure substances such as atoms. Molecules retain the composition and chemical properties of the substance from which it is built.
Molecules can be homogenous or heterogenous depending upon the constituent atoms. If different atoms combine to form a molecule then it is heterogenous in nature e.g., CO₂ while the molecule which is made up one type of atom is known as homogenous. Example- O₃.
Molecules have chemical bonds which are responsible for the binding of atoms, these chemical bonds can be broken by applying energy in the form of heat to the molecules.
Therefore, the correct option is D.
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What is the main transformation that occurs during glycolysis?
Answer:
Glycolysis produces pyruvate and ATP
Explanation:
Answer:
Glycolysis produces ATP by oxidizing water
Explanation:
Glycolysis produces ATP and pyruvate by oxidizing glucose and NAD+. Glycolysis produces pyruvate, ATP, and NADH by oxidizing glucose. Glycolysis produces CO2, ATP, and pyruvate by reducing glucose.
Diarrheal disease can be caused by the microscopic protozoans...
(has checkboxes can select multiple)
[] giardia
[] amoeba
[] trypanosoma
What would Iraq have to do in order to reach a zero growth rate? What kinds of challenges might the Iraqi government face in trying to implement these measures?
Answer:
Iraq will have to massively reduce the birth rate to achieve a zero growth rate. In the middle east, there is more sexual freedom which may cause sexual education to be useless. Iraqi government would most likely have to give widespread contraception to its citizens.They would either have to lower birth rates or increase death rates. It would be more practical for the Iraqi government to provide contraception's and sexual education among its citizens to decrease birth rates.
how is the scientific thory developed
Answer:
Scientific theories are created through the process of the scientific method. Observation and research lead to a hypothesis, which is then tested. ... Over time, a hypothesis can become a scientific theory if it continues to be supported by additional research. Theories and laws
Both scientific laws and scientific theories are produced from the scientific method through the formation and testing of hypotheses, and can predict the behavior of the natural world. Both are typically well-supported by observations and/or experimental evidence.
Answer:
Scientific theories are created through the process of the scientific method.
Explanation:Observation and research lead to a hypothesis, which is then tested. ... Over time, a hypothesis can become a scientific theory if it continues to be supported by additional research.
Fiddler crabs are invertebrates. That means they do not have a backbone (that's made out of vertebrae). Does this mean they don't have a skeleton?
Answer:
No, this is not true.
Explanation:
Fiddler crabs have exoskeletons, meaning their skeletons are found on the outside of their body rather than the inside.
During diffusion, molecules move from areas of Higher concentration to areas of Lower concentration. Diffusion does not require to move molecules. As
Answer:
The diffusion of molecules is a process that happens in our organism and the solutes move in a single direction that is always respected based on the principles of biochemistry.
Solutes always move or diffuse from compartments of higher concentration to those of lower concentration in order to equalize the amount of solute in both compartments and therefore equalize the concentrations.
Explanation:
These processes must take place between two compartments of different concentrations divided by a selective semi-permeable membrane, that is, only the solute passes and diffuses passively or actively without dragging on water or other molecules.
This process occurs in the body in those with hyper concentration of solutes in the blood in pharmacological situations.
Answer:
The answers are:
high
low
energy
Explanation:
I took this test and got these answers when the answers from other brainly members above proved to be incorrect.
Steve is a 47 year old male who has a lot of plaque buildup in his arteries due to lack of exercise and a diet high in fats. He has recently been complaining of vision problems, chest pain, and severe headaches. His doctor informs him in his latest visit that his blood pressure is too high for his current age. What is most likely happening to the flow of blood in Steve's cardiovascular system?A. Blood flow is continuing like normal and is not affected by his high blood pressure.B. Blood flow has stopped completely which is causing his severe headaches due to lack of blood reaching the brain.C. Blood flow has increased in order to makeup for his lack of exerciseD. Blood flow is decreased below normal due to the build of of plaque in the arteries causing an increase in blood pressure.
Answer:
Blood flow is decreased below normal due to the build of of plaque in the arteries causing an increase in blood pressure.
Explanation:
When fats, cholesterol,calcium , water builds up on the endothelial lining of the Coronary arteries,reducing the diameter,and therefore impeding the flow of blood,these build up is called Plaque.The diseases condition that arise from this called atherosclerosis.
With continue build up the plaque changes in the chemical components.becomes hardened, further reducing the diameter,blood volume available and therefore oxygen supply to the targeted tissues( cardiac muscles) of the heart.This leads to Ischemic heart diseases e.g chest pain-Angina. With these strokes and other complication may follows due to cut off in oxygen and nutrients rich blood to the tissues of the brains for the heart.
The impedance to the blood flow,forced load on the heart to pump blood and therefore High blood pressure.This is the problem with Steve CVS.
what is the answer I really need it quick plz
Explain the function of the cell membrane in both plants and animal cells.
Answer:
The cell membrane is permeable to small solutes to let them easily diffuse in and out of the cells.
pls help me woth this answer ty
Answer:
Scientist three
Explanation
In most experiments, you will find that the averge will outnumber anything else. Think of it like this. If you take a survey of your friends animals they will most likely have a dog or cat, that is your average. One or two might have a snake or lizard, those are your above and below average.
All the radiation absorbed in the Earth's atmosphere is absorbed in the stratosphere.
Please select the best answer from the choices provided
OT
OF
vit
Next
Submit
Answer:
False
Explanation:
I literally got it wrong on the quiz
Answer:
The answer is false
Explanation:
i took the test
what are antibiotics in brief
Answer: powerful drugs that kill bacteria or slow their growth. They treat bacterial infections, not viruses. They keep wounds from getting infected and they clean them so that nothing gets nasty and stuff like that. I hope this helps you :D
Answer:
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria
People who study the effects of human activities on Earth’s land, air, water, and living things are a. astronomers. b. environmental scientists. c. meteorologists. d. oceanographers. Please select the best answer from the choices provided A B C D
Answer:
Environmental Scientists
Explanation:
Astronomers observe stars, space, and other objects in space. Meteorologists study weather patterns, oceanographers study sea life, and environmental scientists study Earth and the interactions between living and nonliving organisms, air, and water.
Hope this helps!
Answer:
B. Environmental scientists
Explanation:
Let's examine each answer choice.
Keep in mind, we want to find the answer that matches: People who study the effects of human activities on Earth’s land, air, water, and living things.
A. Astronomers
They study stars, moons, galaxies, and planets, so this is not correct.
B. Environmental scientists
They study the environment and how to protect nature. They also examine how humans impact the Earth. This must be the right choice, but let's check the others to ensure we are correct.
C. Meteorologists
They study the atmosphere and weather. This is also not correct.
D. Oceanographers
They study the ocean and its features, therefore this is not correct.
The best answer choice is B. environmental scientists
Describe the effect of an enzyme in lowering the activation energy.
Answer:
Features of Enzyme Catalyzed Reactions
Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind.
Explanation:
Do hydrogen bonds require a lot of energy to break ?
Answer:
The energy required to break multiple hydrogen bonds causes water to have a high heat of vaporization; that is, a large amount of energy is needed to convert liquid water, where the molecules are attracted through their hydrogen bonds, to water vapor, where they are not.
Fill in the blanks to complete each statement about the age of Earth. According to scientific evidence, Earth is approximately 4.6 billion years old. Scientists used fossils and rocks dating to determine Earth’s age.
Answer
1. billion
2. radioactive
Explanation:
Which of the following is NOT an important function of proteins
1. structure
2. enzymes
3. energy
4. hormones
Answer:
2. enzymes
Explanation:
enzymes are proteins made up of amino acids and acts as a biological catalyst in our body but however, glucose serves as the purpose of energy provider for metabolism which is not a proteinwhat substance does a enzyme act during a chemical reaction
To enhance oral and written presentations, scientists often use?
Answer:
all of these
Explanation:
A.
graphs.
B.
charts.
C.
tables.
D.
all of these
Presentations are oral and written ways of expressing the topic matter in an effective manner. Scientists often use graphs, charts, and tables for presentations. Thus, option D is correct.
What are the components of the presentation?Presentations are the programs that represent the data and information by various elements that make it look effective and presentable. It allows the readers to understand the concept more easily.
It includes the use of graphs that represents the data and census in vertical, horizontal, and dot line, and are used to compare the information. On the other hand, the charts can be like a pie chart that shows the proportions and ratios.
The tables are used to present the data in tabular form, arranged in columns and rows to represent the statistical data. It summarizes the input and output.
Therefore, option D. all of these can be used for an effective presentation.
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Your question is incomplete, but most probably your full question was, To enhance oral and written presentations, scientists often use?
A. graphs
B. charts
C. tables
D. all of these
state four diseases caused by viruses
Answer:
measles, mumps, rubella, & chicken pox
Explanation:
Because viruses attack and multiply within certain cells causing disease.
Define a developing country
Answer:
a country having a standard of living or level of industrial production well below that possible with financial or technical aid; a country that is not yet highly industrialized.
Explanation:
What does specific heat mean?
"The heat required to raise the temperature of the unit mass of a given substance by a given amount"
What is one resource you use on a school project
Answer:
Britannica is an excellent source of information, especially for a school project.
Explanation:
It has many articles and biographies. It also has quizzes to help test your knowledge. It is very good for school and most teachers accept it as a reliable resource.
DNA and RNA are both A. Made up of nucleotides and carry molecules from one end of a cell to another B. Monomers of protein molecules that provide structure to a cell’s nuclear membrane C. Protein molecules that carry the unique genetic information of an organism D. Molecules that contain genetic information and are made up of nucleotides
Answer:
A
Explanation:
DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base.
Based on your knowledge of flood-prone areas, where would similar technology be useful in the United States?
I think this technology would be useful near the Gulf Coast, around Florida, the Carolinas and New Jersey and New York.
Answer:
The storm tanks would be useful in cities frequently hit by hurricanes. The East Coast of the United States often experiences flooding from hurricanes. It also might be useful in areas that are prone to flooding, receive excessive rain, or have old or weak dams.
Explanation:
this is the samaple answer to the question, it also has why for explaining.
Eukaryotes are more complex because they contain.
Answer:Eukaryotic cells are generally larger and more complex than prokaryotic cells. They also contain a variety of cellular bodies called organelles. The organelles function in the activities of the cell and are compartments for localizing metabolic function.
Explanation:
Outline and describe the steps in the process represented in this diagram
Answer:
Phagocytosis is a type of endocytosis performed by phacytes. Bacteria is engulfed through phagocytosis (part of the cell membrane surrounds the bacteria inside the cell). Then lysosomes fuse with the phagosome and the bacteria is digested. After digestion, the cell perform exocytosis of waste products.