Answer:
See the answer below
Explanation:
In order to test for starch and distinguish the beaker containing a mixture of startch and water, a small quantity of the solutions in each beaker should be taken and and drops of iodine added. The solution that gives off a blue/black color from the yellow/brown color of the iodine would be the starch water solution.
Generally, starch turns iodine solution to blue/black from the usual yellow/brown color of the substance.
2) A group in which everything is the same as the test group, except that the independent variable stays the same is a(n) ___________.
A. independent variable
B. extraneous variable
C. control group
D. controlled variable
E. dependent variable
Answer: Control Group
Explanation:
A group in which everything is the same as the test group except that the independent variable stays the same is a control group that is in option C, as the control groups never change.
What is the significance of the control group in the experiment?A control group is a set up in a scientific experiment that serves as a baseline for comparison with other unknown samples, and after testing the control group with the results of the treatment group, researchers can determine the effect of the independent variable. The control group is the sample whose value is known to the scientists.
Hence, a group in which everything is the same as the test group except that the independent variable stays the same is a control group that is in option C, as the control groups never change.
Learn more about the control group in the experiment here.
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Explain the method scientest use to study how Earth's atmosphere and climate have changed during the past million years. (brainliest Reward)
Answer:
alksjdfpiasdfiuaE... HAOSIDHFBIWuebflasdblfieubafoJFBAIWBFAHEgtVUvuYVUYvauB UwU
Explanation:
(sry i have no idea)
Answer:
Scientists first collect ice cores from deep under the arctic and antarctic ice shelves. Next, they measure the concentrations of gasses trapped in the ice to determine how long ago the ice was formed and what the composition of the atmosphere was like at the time. These ice cores are like little time capsules showing what Earth’s atmosphere and climate were like in the past.
Evolution is the scientific theory that explains "a change in the characteristics of biological populations over next generations. According to scientists, RNA is the first existing molecule on earth that replicate by itself and the process of evolution leads to advanced forms of life.
These characteristics are easily transferred from one generation to another generation. Organisms evolve over time due to changes in heritable physical characteristics is an example of a scientific theory known as evolution.
Explanation:
what's it called when precipitation falls to earth and gets sucked up in the soil
Answer:
is referred to as Infiltration.
Explanation:
their
Answer:
Explanation: Groundwater
In which two ways does a hummingbird's nervous system help its body's cells
get nutrients?
Answer:
It controls the muscles
Explanation:yes
Answer:
It controls the muscles
Explanation:
Will mark Brainliest. When the environment changes, nature selects favorable _______. Over time, these ___________ in a population.
Answer:
first line adaption
second line build-up
which states of matter has the lowest kinetic energy ?
Answer: Solid State
Explanation:
Answer:
Answer:solid
Answer:solidExplanation:
Answer:solidExplanation:molecules in the solid phase have the least amount of energy.
Answer:solidExplanation:molecules in the solid phase have the least amount of energy.solids are things where the molecules are stuck toghether very tightly in a regular pattern.
Answer:solidExplanation:molecules in the solid phase have the least amount of energy.solids are things where the molecules are stuck toghether very tightly in a regular pattern.the molecules move around very little and have a low amount of energy
Based on the data, we determined that plant growth is affected by the type of soil
Answer: Sometimes.
Explanation: Well, it depends on the other conditions, what is in the soil, etc.
The thing that an enzyme breaks down
Answer:
The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion
Explanation:
In Darwin's Theory of Evolution, he describes how offspring descend with
modification from their parents. All of the following illustrate this concept EXCEPT
Answer:
C.Darwin used this term to describe change in organisms over time, or evolutionary change.
Explanation:its called look it up and click on the quizlet flashcards link and it will give you all the answers on the whole quiz or assignment and it will just look like you are looking at studying flashcards.
Nitrogen from animal waste can be stored in bodies of water as
Pls help like asap, i will give brainliest!!!
Answer:
Amino Acids im pretty sure
Nitrogen is an essential element required by all the organisms present on the Earth. Nitrogen is found in all amino acids and nucleotides. The nitrogen from animal waste can be stored as nitrate, ammonia, or nitrites.
Nitrogen is an essential compound, which makes up the amino acid and many other biomolecules.
The nitrogen is released into the atmosphere through animal manures or waste. Animal manure serves as the source of nitrogen for plants and other organisms.
The nitrogen released by the aquatic organisms is the primary source of circulation of nitrogen in the marine environment.
The nitrogen when dissolved in the water exists as nitrates, ammonia, or nitrites.
Therefore, nitrogen exists as nitrates and nitrites when stored in water bodies.
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Cells are to tissues as tissues are to _____.
Answer:
organs
Explanation:
We wish to test if a certain vaccine developed for a
disease is effective or not. What is the best way to do
this?
A
Vaccinate 100 animals
and expose all 100 to the
disease.
B
Vaccinate 100 animals
and expose 50 of them to
the disease.
C
Vaccinate 50 animals, do
not vaccinate 50 other
animals, and expose all
100 to the disease.
D
Vaccinate 50 animals, do
not vaccinate 50 other
animals, and expose the
vaccinated animals to the
disease.
Answer:
The best way to test the effectiveness of a vaccine against a disease is vaccinate 50 animals, do not vaccinate 50 other animals, and expose all 100 to the disease (option C).
Explanation:
When testing a vaccine for effectiveness, the option is to administer the vaccine to half of the population exposed to a disease, since effectiveness should measure the performance of the vaccine within a community.
If there are 100 animals exposed to a disease, the fact that the 50 vaccinated animals do not get sick is an excellent test of how the vaccine works and what its effectiveness is.
The other 50 animals, not vaccinated, would act as a control group exposed to the same disease and sharing a certain space.
The other options are not correct because:
A. Vaccinating the 100 exposed animals does not provide an unvaccinated control group to compare the effects of the vaccine.
B. Vaccinating all 100 animals and exposing only 50 to the disease does not make sense, since it would not be possible to measure effectiveness in vaccinated animals that are not exposed.
D. Vaccinating 50 animals and not vaccinating the other 50 to expose only the vaccinated animals to the disease does not make sense since the conditions of the test group and the control group should be the same.
Will give brainest!!!!
Which of the following is a good example of the way manipulation motive affects motivation?
a) Your dad wants to be the one to 'control' the TV remote control.
b) You paint your bedroom a different color.
c) We do a good deed for someone else.
d) The new mother rocks her baby.
Answer:
I am pretty sure it is A
I hope this is the right answer.....
PLEASE HELP ME!!!!!!!
Help me by naming the moon phases, crescents, and gibbous that are happening in the image below
Please and Thank You!
Will mark brainliest!! O///O
Answer:
1= full moon
2=waning gibbous
3=last quarter
4=waning crescent
5=new moon
6=waxing crescent
7=first quarter
8=waxing gibbous
Answer:
1. full moon
2.waning gibbous
3.last quarter
4.waning crescent
5.new moon
6.waxing crescent
7.first quarter
8.waxing gibbous
Explanation:
WILL GIVE BRAINLIEST !! 10 POINTS
Which of the following statements best describes the major difference between prophase I of meiosis and prophase of mitosis?
A. In prophase I, tetrads of homologous chromosomes form and crossing over occurs.
B. In prophase, the nuclear membrane dissolves and spindle fibers attach to the chromosomes.
C. In prophase I, the chromatin condenses to form visible chromosomes. In prophase, the replicated chromosomes are linked together as sister chromatids.
Answer:
I believe the correct answer is A.
Explanation:
Answer:
the answer is A
Explanation:
In prophase I, tetrads of homologous chromosomes form and crossing over occurs" is the statement among the following statements that best describes the major difference between prophase I of meiosis and prophase of mitosis. The correct option among all the options that are given in the question is option "A".
Which is NOT true about a polypeptide?
a
A polypeptide is made up of many peptides (amino acids).
b
Water is removed when one amino acid bonds with another.
c
Amino acids are held together with a covalent bond.
d
The R group is the same across the polypeptide.
Answer:
i think its b ..........
patulong naman guys:>
Answer:
do you still need this
Explanation:
Answer:
the answer is a square multiplied by b
Explanation:
What do all bacteria have in common?
a. They all have cell nuclei.
b. They're all multi-cellular organisms.
c. They're all single-celled organisms.
d. They can all be found inside the human body.
Answer:
b.they're all multi-cellular organisms
If a lipid molecule contains all its_____ it is saturated
Answer: Saturated fatty acids
Explanation:
Describe how the state of matter will affect the usefulness of materials used in a stepping stone
Answer: The states of matter can be solid, liquid, and gas.
Explanation:
The change in the state of matter can change the utility of the materials. Like, water in the liquid state when changed into solid ice can be used as ice cube and in the gaseous vapors can be used for steaming food items.
The stepping stone is a stone which is used for roadside pavements. It is used for walking. It can be prepared using liquid mixture of cement and concrete into a mold and it is converted into solid mass on drying.
Describe how geologists use index fossils. List the characteristics that make an index fossil.
A index fossil can be recognized easily and abundant, and have a wide geographic distribution and a short range through time. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata.This all are the benefits of maintaining index fossil.
What is fossil?If scientists excavate two fossils at the grand canyon, one of which found at a much deeper rock layer than other, so we assume that the fossil has been found in the deeper layer has been older and fossil which found in upper layer are newer.
A fossil fuel has been hydrogen- containing material found naturally in the earth's crust from the remain of the dead plants and animals that is extracted and burned as a fuel.
Fossil are the natural source of energy, it has been made from decomposition of the plants and animals. Fossil fuels are said to be found in the earth's crust and it contains carbon and hydrogen which could gives energy by burning.
Therefore, A index fossil can be recognized easily and abundant, and have a wide geographic distribution and a short range through time. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata.This all are the benefits of maintaining index fossil.
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Carbon is an important element for biological life because it-
is always attached to oxygen atoms.
can form varied, large, and intricate molecules.
is stable and does not easily go through changes.
is only found in plant species, such as trees.
Answer:
can form varied large and intricate molecules due to tetra valency and catanation chararter
List 5 reservoirs of Carbon.
How do the surface ocean and deep ocean differ when it comes to the carbon cycle?
How do land plants and marine life differ when it comes to the carbon cycle?
How is carbon trapped in the soil?
How is carbon released from the soil?
Describe three scenarios/conditions that would inhibit the carbon cycle from the second animation.
Describe three scenarios/conditions that would promote the carbon cycle from the second animation.
What role do decomposer play in the carbon cycle?
Answer:
1.Living things in the ocean move carbon from the atmosphere into surface waters then down into the deeper ocean and eventually into rocks. This action of organisms moving carbon in one direction is often called a biological pump.
Carbon gets incorporated into marine organisms as organic
Molecules that contain carbon and that have a biological origin.
2.Through the process of photosynthesis carbon dioxide oxide is pulled from the air to produce food made from carbon for plant growth. Carbon moves from plant to animals. Through food chain , the carbon that is in plant moves to the animal that eat them. Animals that eat other animals get the carbon from their food too.
3.soil naturally absorbs carbon from the atmosphere through the process known as sequestration which not only reduce harmful gases but also creates more fertile soil.
4.Soils play a key role in the carbon cycle by soaking up carbon from dead plant matter. Plants absorb CO2 from the atmosphere through photosynthesis, and pass carbon to the ground when dead roots and leaves decompose.
All living organisms are made up of cells. Unicellular organisms are made up of only one cell. Multicellular organisms are made up of more than one cell.In which kingdoms are both unicellular and multicellular organisms found? A. Protist and Fungus only B. Bacteria and Archaea only C. Plant and Animal only D. Archaea and Protist only
Answer: protist and fungi
Explanation:
Answer:
tist and Fungus only
Explanation:
what is the importance of thermal energy
Answer:
Productive uses of thermal energy include but are not limited to: cooking, drying, heating, smoking, baking, water heating, cooling and manufacturing. New and efficient technologies exist that significantly reduce the amount of biomass needed for fuel.
Explanation:
which type of mutation changes the order of the genes but not the number of genes in a chromosome
Answer:
Inversion Mutation
Explanation:
Inversion is a chromosome rearrangement in which a segment of a chromosome is reversed end to end, so it does not change the chromosome. (sorry if its confusing)
Can matter because arranged??
Answer:
yes
Explanation:
[tex]\mathrm {Hey!}[/tex]
Let's solve your problem:
Matter can be arranged into four categories:
[tex]\mathrm {Solid, liquid, gas, and , plasma}[/tex]
Each type of matter has different properties.
Best of Luck!
Please help finish the sentence:
The attraction between oppositely charged ions in a compound is an
Answer:
Ionic Bond
Explanation:
It is one of the main types of chemical bonds in chemistry. Ionic bonds are caused by electrons transferring from one atom to another.
Question 1. Construct a crossword puzzle of your own using the keywords. (Chapter - 18 Pollution of Air and Water)
what are the reactants of enzyme-catalyzed reactions called?
Answer:
substrates.
Explanation:
Substrates bind to a part of an enzyme called the active site and remain bound to the enzyme until the reaction is complete, when the products are released. Temperature, pH, and regulatory molecules can affect the activity of enzymes.