Answer:
robert hook
Explanation:
what is the purpose of having distilled water as one of your test substances?
Distilled water does not have any cellular or mineral contamination. It is used in experiments for accurate results.
What is distilled water?It is a type of water that is completely purified of any kind of impurities. It does not have any minerals, salts, or organic materials.
Distilled water is the liquefied stream. When the water is boiling, it turns into a stream. This is collected and the steam is turned back to liquid. The steam doesn't carry an impurity of water with it and so distilled water formed from steam is also devoid of any impurities.
Distilled water is safe to drink but it will not taste anything like regular water. The water in our homes is supplied with minerals. These minerals are required for various processes in our body. Distilled water doesn't have any such minerals. Hence it's safe to drink but it's not beneficial.
Therefore, distilled water is used in experiments as there is no chance of contamination or reaction with this. This is used as a control against the test substances.
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Which of the following processes is LEAST directly influenced by adrenergic drugs?
a. peristalsis
b. secretion of digestive enzymes
c. enzymatic breakdown of food molecules
d. nutrient delivery to muscles and organs
Answer:
c. enzymatic breakdown of food molecules
Explanation:
For adrenergic drugs active the nervous system i.e. sympathetic also it directly related to digestive enzymes, rise the blood glucose that results in blood vessels dilation that aids delivery of nutrient and tissues.
But it does not directly affect the digestive enzymes activity after considering the secreted
Therefore in the given case, the option C is correct
Alicia conducted an experiment to find out which insulating material holds in the most heat. She did multiple trials of each test and recorded observations of each trial. Why did Alicia do more than one trial? to improve the variability of her data to prevent other people from using the data incorrectly to help in arriving at a conclusion even with inaccurate data to reduce the likelihood of errors in the experiment
Answer:
ITS D
D: to reduce the likelihood of errors in the experiment
Explanation:
Edge 2021
4. Using a complete sentence, state what would most likely happen to the production of oxygen by duckweed plants if the intensity and duration of exposure to light were increased.
Answer:
See the answer below
Explanation:
If the intensity and duration of exposure to light are increased for a duckweed plant, the rate of photosynthesis would increase and this would lead to an increase in the amount of oxygen produced.
From the equation of photosynthesis:
[tex]6CO_2 + 6H_2O + light --> C_6H_1_2O_6 + 6O_2[/tex]
the more the rate of photosynthesis, the more the amount of oxygen produced. Also, an increase in the intensity of light generally increases the rate of photosynthesis (and oxygen production) provided that other reactants can catch up. The rate of photosynthesis would become limited by the reactant that is available in the lowest quantity.
Carbon dioxide dissolved in water is what gives soda it's fizz. What is the solvent in this solution?
carbon dioxide
water
carbon
there is no solvent because carbon dioxide is a gas
100pts and brainleast
Answer:
The correct answer would be - Water.
Explanation:
Soda is a solution that has water, sugar, flavorings, carbon dioxide as its components. Carbon dioxide is dissolved under pressure in the water with other solutes like sugar and flavorings. Carbon dioxide is a gas however it is still is a solute.
Water is the component of soda that is solvent as all other components dissolve in it. Water is solvent in this solution of water, sugar, flavorings, carbon dioxide as its components. Carbon dioxide.
Thus, the correct answer is - water.
Answer: Hi Uncle
Explanation:
Which revision changes the dependent clause into an independent clause?
The given question is incomplete. However, the complete question is given below:
Read the dependent clause.
after the conversation with her publisher, when she decided to write an autobiography
Which revision changes the dependent clause into an independent clause?
After the conversation with her publisher, because she decided to write an autobiography.
Since the conversation with her publisher, when she decided to write an autobiography.
After having the conversation with her publisher, when she decided to write an autobiography.
After the conversation with her publisher, she decided to write an autobiography.
Answer:
The correct answer is - After the conversation with her publisher, she decided to write an autobiography.
Explanation:
The revision that alters the dependent clause (incomplete thought) into an independent clause (a complete thought) is the following one:
"After the conversation with her publisher, she decided to write an autobiography."
The reason behind this is that an independent clause is a clause that expresses a complete thought and no need for other clauses to be associated.
The other options (a and b) are grammatically incorrect when presented as independent clauses, whereas D is completely okay.
Answer:
D - After the conversation with her publisher, she decided to write an autobiography.
How does heat energy affect condensation?
Answer:
Condensation happens when molecules in a gas cool down as the molecules lose heat, they lose energy and slow down. They move closer to other gas molecules and finally the molecules collect together to form a liquid.
Explanation:
Answer:
the practices move faster because of the heat energy
Which of the following is an example of a biochemical adaptation?
a. camouflage
b. migration
c. being immune to scorpion stings
d. razor sharp teeth
Answer:
c.
Explanation:
over time you adapt to be immune to scorpio stings
Being immune to scorpio stings is an example of a biochemical adaptation. Thus c is correct option.
What is biological adaptation?
A biological adaptation is defined as physical change in an organism that allow the organism to survive in their environment. Adaptation can be seen in three form i.e structural behavioral and physiological.
Adoption has been described from the time ancient Greek philosophers known as Aristotle.
In the process of adaptation the source of all genetic variation there would be no genetic changes occur.
When there is increase in mutation genetic change occurs in a population.
Adaptation is generally relates to biological fitness which is responsible for rate of evolution due to change in allele frequencies.
Therefore, being immune to scorpio stings is an example of a biochemical adaptation. Thus, c is correct option.
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An mRNA macromolecule transcribes genetic code from a DNA macromolecule in a cell's nucleus and carries the
code into the cytoplasm to synthesize a protein.
Which of the following statements is true about the nucleotides in the mRNA macromolecule and the DNA
macromolecule?
The number of uracil bases in the mRNA is the same as the number of cytosine bases on the strand of DNA that it
transcribed
The number of uracil bases in the mRNA is the same as the number of thymine bases on the strand of DNA that it
transcribed
The number of uracil bases in the mRNA is the same as the number of adenine bases on the strand of DNA that it
transcribed.
The number of uracil bases in the mRNA is the same as the number of guanine bases on the strand of DNA that it
transcribed
Answer:
The answer is B i believe
Explanation:
Edge2020
How does interphase prepare cells for mitosis?
rest prior to cell division
growth of cell and replication of DNA
dissolution of nucleus and cell membrane
division of cytoplasm
Answer:
the first one
Explanation:
rest prior to cell division
Answer:
It's a
Explanation:
In skeletal muscle cells, calcium ions bind to the _____ molecule.
Answer:
Explanation:The arrangement of myofilaments
Answer:
In skeletal muscle cells, calcium ions bind to the troponin molecule.
Explanation:
hope it help ^_^
How many blood cells do you have if you pop a artery
Answer:
Too many
Explanation:
Small steps toward completion of the final project are called _________. benchmarks bunny hops driving questions reflections
Answer:
Benchmarks
Explanation:
A benchmark is simply an operation or a test to check the performance of something (in this case, a project) to evaluate if it is ready to be used.
Benchmarks are important because they are needed to see if a project is ready and set to be launched.
What is missing from the x-axis?
1.title
2.units of measurement
3.data points
Answer:
first one: yeast fermentation over time
second one: units of measurement
third one: y-axis title & units
Explanation:
best describes what occurs when technology advances?
models stay the same
models improve
models are oversimplified
models reflect all scientific knowledge
Question 6 of 11
If a scientist gets unexpected results during the first trial of an experiment,
what should he or she do next?
A. Change the data to match expectations,
B. Repeat the experiment to be sure the results are valid.
C. Reject the scientific theory not supported by the results.
D. Publish only the expected data.
Answer:
Repeat the experiment the be sure the results are valid
Explanation:
Answer: Repeat the experiment the be sure the results are valid
Explanation:
What is true about a Producer's role in the ecosystem?
A. Producers create energy for the other trophic levels to use.
B. Producers consume other trophic levels to pass their energy up the food chain.
C. Producers capture the energy from the sun for all other trophic levels to use.
D. Producers recycle nutrients back into the food chain
Answer:
D
Explanation:
Producers, also known as autotrophs, make their own food. They make up the first level of every food chain. Autotrophs are usually plants or one-celled organisms. Nearly all autotrophs use a process called photosynthesis to create “food” (a nutrient called glucose) from sunlight, carbon dioxide, and water
Answer:
D
Explanation:
Which animal is an amphibian?
O A duck
B. frog
C. turtle
O D. whale
Answer:
frog
Explanation:
Human blood type is an example of which two types of genetics?
A. Multiple alleles and Polygeic inheritance.
B. Incomplete dominance and Polygenic inheritance.
C. Codominance and Multiple alleles.
D. Codominance and Incomplete dominance.
Answer:
The correct answer is option C. "Codominance and Multiple alleles".
Explanation:
Human blood type is a concept developed to understand how blood transfusion can be successfully performed, and is based on the presence and absence of antibodies and antigens in the surface of the red blood cells. Human blood type is an example of genetics codominance and multiple alleles. It is an example of codominance because some people express both allele A and allele B in what is known as blood type AB; and it is an example of multiple alleles since there are three alleles: type A, type B and type O.
The distribution of blood on basis of antibodies and antigenic heritage is called blood type. The main groups of blood types are A, B, AB, and O.
The correct answer is:
Option C. Co-dominance and Multiple alleles.
This can be explained by:
Among the presence of two alleles, neither of them can suppress the presence of another allele that is, both of the alleles will be expressed simultaneously this is called Co-dominance.In human blood type when the allele for A and B is present then, they will be expressed concurrently and the blood group will be of AB type.The ABO blood kind in humans is an example of multiple alleles. Human genes for blood type exist as [tex]\text I^{\text{A}}[/tex] , [tex]\text I^{\text{B}}[/tex] and [tex]\text I^{\text{O}[/tex]. Only two of the three genes is expressed in the human cells
Therefore, Human blood type is an example of Co-dominance and Multiple alleles.
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What three things does something need to have in order to be considered living?
Answer:
air water and food
Explanation:
all living things need air, water, and food.
Agent that kills bacterial upon exposure:_____.
Answer: The answer would be disinfectants
Explanation:
Answer:
Bacteriocidal.
I need this by today pls help
Answer:
the first questions answer is A your investegation failed because the data didnt support the hypothesis
the second question is C i believe.
A student is trying to find out if people prefer vanilla ice cream or chocolate ice cream. She buys several
containers of regular chocolate ice cream and low fat vanilla ice cream. She hands out small sample of each
flavor to the testing group she has gathered and asks them 5 minutes later which one was their favorite. Of the
100 people she tested, 80 said they prefer the chocolate ice cream.
This situation is an example of
A)
personal bias
B)
experimental bias
C)
cultural bias
D)
a controlled experiment
Answer:
B. Experimental Bias because she she bought chocolate, but then she bought lowfat vanilla ice cream unknowingly. Therefore, the people liked more of the chocolate ice cream.
Hope this helped :3
Explanation:
The suffix that can indicate a change in cell structure is ____________________.
Answer:
Hope I'm not too late, the answer is plasia.
Adam tested how music affects plant growth.
What is the dependent variable in the experiment?
A) type of bush
B) music ***
C) plant growth
D) soil
Who first identified DNA? Rosalind Franklin Erwin Chargaff Friedrich Miescher James Watson
Answer:
Friedrich Miescher
Explanation:
In 1869, Friedrich Miescher isolated "nuclein," DNA with associated proteins, from cell nuclei. He was the first to identify DNA as a distinct molecule.
Friedrich Miescher was the first to identify DNA. Details about DNA can be found below.
What is DNA?DNA also called deoxyribonucleic acid is the part of a living being that carries or stores genetic information.
Others are of the opinion that American biologist James Watson and English physicist Francis Crick discovered DNA in the 1950s.
However, this is untrue as DNA was first identified in the late 1860s by a Swiss chemist names Friedrich Miescher.
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Help ASAP ... I’ll give you 15 points ... I need the answer
As more and more CO2 dissolves in the oceans:
a. The ocean pH will go up.
b. Sea level will go down.
c. The rate at which oceans take up CO2 will increase.
d. Marine animals that make their shells out of calcium carbonate will suffer.
What does the process of cellular respiration provide for cells?
Answer:
Energy
Explanation:
Answer:
It provides energy.
Explanation:
A student made a model of a river in a sandbox. A pile of
sand represents soil and bits of rock in the riverbed. Water
pouring from a hose represents river water as it flows
downhill.
Which two characteristics are limitations of the student's
model?
A. The model is much smaller than a real river.
B. The model is missing plants, fish, and other details
found in a real river.
C. The model soil is nothing like the soil found in a real
riverbed.
D. The model river water flows downhill instead of
uphill like real river water does.
The two characteristics that are limitations of the student's model are:
A. The model is much smaller than a real river.
B. The model is missing plants, fish, and other details found in a real river.
The first limitation of the student's model is that it is much smaller than a real river. A sandbox model cannot accurately represent the scale and size of a natural river system. Real rivers can span for miles with varying widths and depths, while a sandbox model is limited in size and cannot capture the full complexity of a river's dimensions.
The second limitation is that the model is missing plants, fish, and other details found in a real river. A real river ecosystem consists of diverse flora and fauna, including vegetation along the riverbanks, aquatic plants, fish, insects, and other organisms. These elements play crucial roles in the functioning and dynamics of a natural river system. However, the student's model does not include these essential components, limiting its ability to represent the complexity and ecological interactions present in a real river.
The model soil is not like the soil found in a real riverbed. In natural riverbeds, the soil composition is influenced by geological processes, weathering, sedimentation, and organic matter deposition. The pile of sand used in the student's model may not accurately mimic the intricate mixture of soil and rock particles found in a real riverbed, thereby limiting the model's ability to replicate the diverse characteristics and interactions within the soil environment.
Although not explicitly mentioned in the question, it is worth noting that the model river water flows downhill instead of uphill like real river water does. This discrepancy can be considered a limitation if the student's intention was to replicate the natural flow of water in a river. However, if the focus was solely on demonstrating the concept of water movement, this limitation may be less significant.
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triglycerides are composed of glycerol and fatty acid chains..
Answer:
bonded to a single glycerol molecule.
Explanation:
