Answers
Answer:
Scientists try to control most variables in an experiment to find a relationship between the independent variable and the dependent variable
Answer:
Controls are done in order to know if experiments or the subjects being tested are working. Both the control and the subject are compared and observed for change or improvement that will lead to answering to the hypothesis. Since the tested variables will determine the results.
Related Questions
Will water that contains no solute ever stop flowing into a hypertonic solution through osmosis?
Answers
Answer:
No, it will never stop flowing
Explanation:
Osmosis is the movement of water from an area of lower concentration of solute to an area of higher solute concentration through a semi-permeable membrane. If one side of the membrane is completely free of solute, water will move to the hypertonic solution continuously in a bid to achieve equilibrium until all the water completely moves to the hypertonic side. This is because equilibrium cannot be attained since one side is completely void of solute and another has solutes.
It is like having red coloured paint on one side and water on another side of a membrane, and the water moves into the paint compartment and only stops when they both have the same color. No matter how much water moves across, they cannot have the same color on both sides.
ce 8 A
What is the purpose of a reference point?
O to provide a standard system of measurement
O to establish a point from which to measure future distance, or if movement has occurred
O to determine the speed of an object in miles per hour
O to provide a standard from which to evaluate variables in an experiment
Answers
(i do not know the exact definition, so my apologies if this is incorrect, however i do have an explanation)
using process of elimination, we can cross out the 1st, 3rd, and 4th option, as they do not logically make sense:
1 - a reference point is not a system of measures, hence the word ‘point’.
3 - a reference point is again, not a measuring tool or system
4 - at a glance this may make sense, but a reference point is just that, a reference, it’s something you can go back to to see if your work is accurate or has changed in some way, thus option 2 is the best answer.
In a molecule of water, the electrons are more strongly attracted to the hydrogen nuclei than to the oxygen nucleus. Therefore electrons spend more time near the hydrogen nuclei and there is an unequal sharing of electrons.A. TrueB. False
Answers
Answer:
Pretty sure it's false.
The complex carbohydrates picture below are all made by linking molecules of glucos
Starch
Cellulose
Glycogen
In all 3 complex carbohydrates can be referred to as?
A. Monomers
B. Amino Acids
C. Nucleotides
D. Polysaccharides
Answers
Answer:Monosaccharides
Explanation:
monosaccharies are the building blocks of all carbohydrates! Starch and glycogen are carbs that consist of multiple monos.
How do particle speed relate to the distance between particles
Answers
Answer:However, particles will move in straight lines until they collide with something. Collisions usually change the speed and direction of the particles movements. If the motion of particles slows the particles move closer together. This is because the attraction between them pulls them toward each other.
Explanation:
Larger particles move slower, due to their larger mass and may be influenced by numerous collisions with many nearby smaller particles. Smaller particles move faster. ... Hotter particles move faster because they have more energy. The rate of diffusion increases as temperature increases because the particles move faster. You're welcome :) - xoxo madster
What would happen if a giant dust cloud blocked the sun on Earth
Answers
Answer:
there would be the equivelant to a very harsh winter
Explanation:
Answer:
we would die from the lack of food and the vitamins that the sun gave and plants would die and and destroy the atmosphere also the water would be unclean
Explanation:
What is the best hypothesis for the problem question
below:
"What happens when a thrown tomato is suddenly stopped by a concrete wall?"
Answers
Answer:
its upon sudden impact
Explanation:
Indicate whether each of the following is a primary source or a secondary source. An article in Journal of the American Medical Association: An article in Time magazine: An article in The New York Times newspaper:
Answers
Answer:PRIMARY SOURCE , SECONDARY SOURCE , SECONDARY SOURCE
Explanation: I just completed the assignment with a 100%
An article in Journal of the American Medical Association : primary source
An article in the Times magazine : secondary source
An article in the New York Times newspaper : Secondary source
Identify which type of source is being described.
✔ Primary
sources present original research, whereas
✔ secondary
sources summarize scientific information.
Indicate whether each of the following is a primary source or a secondary source.
An article in Journal of the American Medical Association:
✔ primary source
An article in Time magazine:
✔ secondary source
An article in The New York Times newspaper:
✔ secondary source
e2020
11) What are the three primary uses of computers for biologists?
please help due today
Answers
Computers can be used to simulate cellular growth, the human nervous system, motor control, disease transmission, and disease progression. All of these things are highly useful in biological and medical research. These are only a few of the many ways that computers can be used in life sciences.
Answer: analyze datawrite reports build models
Explanation:
What natural disasters are linked to each other?
Answers
HELP ME PLZZZZZHELP MEEEE ASAP!!!!!
Answers
The answer to the question is A
Answer:
A
Explanation:
Triglycerides are made of disaccharide true or false
Answers
Answer:
false
Explanation:
Answer:
false
Explanation:
What is science and how does it affect our lives?
Answers
Answer:
Science is the study of the natural world through observation and experiment.
It affects our lives because it allowed technology, medicine, and education.
How does it affect our lives?
Science informs public policy and personal decisions on energy, conservation, agriculture, health, transportation, communication, defense, economics, and etc.
How was genetic engineering able to solve the problem of tomatoes being damaged in transit without sacrificing taste?
What was the problem with this genetic engineering solution?
Answers
Answer:
The genetic engineering produced on these tomatoes was the solution to reduce the amount of chemical usage to crops as well as introducing a greater disease resistance, insect resistance, and increase shelf life. Conclusively, scientists and farmers still wanted to keep their natural color and flavor, yet change it into a more positive way. 70 years ago, spoke of the dangers of nightshade foods, covering all this ground, and stating that traditionally in South America, where potatoes and tomatoes come from they were eaten as medicine – that is given specifically for a short period time for a specific condition.
Hope this helped you!
Explanation:
What is the Sl unit of time?
Ο Α.
second
O B.
minute
O c.
hour
OD day
Answers
Explanation:
Hey there!!
The si unit of time is second.
The international convention of scientists that was held in France had come to the conclusion that the si unit of time is second.
Hope it helps...
What do all living cells have in common? 1. A cell membrane and genetic material 2.Chloroplast and mitochondria 3. A cell wall and cell membrane 4. A nucleus and genetic material
Answers
Answer:
one.
Explanation:
nuclei aren't present in prokaryotes, a cell wall/chloroplasts are a part of plants. the basic beings just need a cell membrane (to separate it from it's environment) genetic material, to get information to code proteins, and ribosomes, to create proteins.
All living cells have a cell membrane and genetic material. The correct option is 1.
A cell membrane, also known as the plasma membrane, is a fundamental feature of all living cells.
It is a thin, flexible barrier composed of lipids and proteins that surrounds the cell and separates its internal contents from the external environment. The cell membrane regulates the passage of molecules, ions, and other substances in and out of the cell, maintaining an internal environment necessary for cellular processes.Genetic material refers to the hereditary material that carries the genetic instructions for the functioning, development, and reproduction of living organisms.
In most cells, the genetic material is in the form of deoxyribonucleic acid (DNA).DNA contains genes, which are specific sequences of nucleotides that encode the information necessary to build and maintain an organism.All living cells have a cell membrane that serves as a boundary and a genetic material, usually in the form of DNA, that carries the instructions for the cell's functioning and inheritance. These two components are essential for the basic structure and processes of all living cells.
Thus, the correct option is 1, A cell membrane and genetic material.
To know more about Cell membranes, click here:
https://brainly.com/question/13049297
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What number is written as 6.0 x 106 in scientific notation
Answers
Answer:
The answer would be 636 x
Explanation:
Simply act as if the x is nonexsitant then multiply normally then apply the x afterward.
Which statement describes why hypotheses are valuable, even if incorrect? Select one: a. Adds to existing knowledge b. Answers a defined problem c. Allows theories to be proven d. Allows theories to be disproved A theory doesn't get disproved without large amounts of da
Answers
Answer:
The correct option is a: "Adds to existing knowledge"
Explanation:
A hypothesis is an idea that is brought forth based on an observation. It needs to be tested by carefully and thoroughly planning an experimental design that either supports or refutes the hypothesis. So even if it comes out to be incorrect, it still allows us to understand some aspect of a phenomenon that was unknown till then.
Smita is experimenting with how a paper airplane's shape affects the
distance it will fly, Which action is the result of her logical reasoning?
A. She decides to perform the experiment outside on a windy day.
B. She decides to use the same type of paper for each airplane.
C. She records only the data that support her favorite hypothesis.
D. She follows her procedure carefully,
Answers
Answer:
Apex approved answer "B" - same type of paper
Human muscle cells are examples of what type of cells?
prokaryotic
eukaryotic
bacteria
plant
Answers
Answer:
Eukaryotic
Explanation:
Answer:
Eukaryotic cells
Explanation:
Human cells have organelles, and so do eukaryotes. Prokaryotes, on the other hand, do not have any organelles and can be seen in small microorganisms such as bacteria.
Plants is not an option becuse plant cells make photosynthesis and human cells (a type of animal cell) do not, as we are missing the chloroplasts necessary for photosynthesis.
Question 20 (10 points)
When you finish working with chemicals, biological specimens, and other lab substances, always
a
Ob
O
С
Od
wipe your hands on a towel.
wipe your hands on your clothes.
treat your hands with skin lotion.
wash your hands thoroughly with soap and water.
Question 21 (10 points)
Im
Answers
Answer:
My answer to the question is "wash your hand thoroughly with soap and water".
Answer:
D
Explanation:
Logically, D is what you would do after touching things like chemicals and biological specimens. The other options don't make as much sense (don't seem as logical) as option D
What do DNA and RNA code for?
Answers
Answer:
The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.
Explanation:
what is not a required characteristic of all living things
A. They require and energy source
B. Made up of 1 or more cells
C. They maintain stable internal conditions
D. They respond to changes in the enviroment
Answers
Answer:
D
Explanation:
not not all living things are required to evolve.
is Human Bone a Plant / Animal / Neither
Answers
Answer:
Neither
Explanation:
A human bone is a non living organism therefore it cannot be a plant or an animal because those are living organisms.
1. What does CDE stand for?
a. Career Development Event
b. Career Developing Education
C. Certified Department of Education
d. Career Department of Education
2
Answers
Answer:
A
Explanation:
Have a nICE DaY
8. In order for the pod
to slow down, the
two forces must
have been balanced
or unbalanced?
Why?
Answers
Answer:
Unbalanced
Explanation:
I cant really explain this from the top of my head but i do know that if the forces were the same, the objects velocity will remain constant, but if the forces are unbalanced it will either slow down or speed up the objects velocity. an example would be tug of war i guess
How did horses come to be ?
Answers
Explanation:
by breeding each other
Answer:
Evolution
Explanation:
Multiple centuries of evolution made horses come to be, most likely evolved from Eohippus. the Prehistoric horses known as dawn horses, they came to be from underwater bacteria that came to life from evolution from the natural world.
Which answer choice BEST supports the idea that the Scientific Revolution questioned the established ways that Europeans understood the world around them? A During this time, philosophers and thinkers in Asia, the Middle East, and Europe developed ideas and theories about how the Universe functioned, and then used mathematics to support their ideas. B This revolution was, in part, a response to the flood of new ideas pouring into Europe as a result of its expanded contacts with the rest of the world. C Europeans were able to collect and form new knowledge, and this led to Europe's unmatched power in the centuries that followed. D This way of thinking challenged the idea that the Bible was the source of all human knowledge, both historical and scientific.
Answers
Answer:
C. Europeans were able to collect and form new knowledge, and this led to Europe's unmatched power in the centuries that followed.
Explanation:
Scientific Revolution occurs in the Renaissance period in which the transition of Europe occurs from middle age towards modern era. This change occurs due to scientific revolution in the Europe. People at that time focus on obtaining knowledge and performing new research and experiments in order to obtain more knowledge and invent new technologies which make them powerful in the coming future.
The energy transformations are similar because they both involve transformations that
begin with chemical energy.
begin with electrical energy.
result in radiant energy.
result in mechanical energy.
Answers
Answer:
its C
Explanation:
I took the test
Answer:
Results in radiant energy
Explanation:
E2020
How is destiny calculated given mass and volume
Answers
Divide the mass by the density of the substance to determine the volume (mass/density = volume). Remember to keep the units of measure consistent. For example, if the density is given in grams per cubic centimeter, then measure the mass in grams and give the volume in cubic centimeters.