Answer:
Rf valuues and reprroooducibility can be affected by a number of different factors such as layer thickness, moisture on the TLC plate, vessel saturation, temmperature depth of mobile phase, nature of the TLC plate sample size, and solvent parameters. These effects normally cause an increase in Rf values
Explanation:
also sorry for bad typing
ypu are a molecular of water. choose a starting point in the water cycle and describe the pyou would go through to move through the entire cycle
Answer:
Im just a molecular of water within a glass that sitting out in the sun.The suns heat causes me to trun into a gas state where I then make my way up and into a cloud.In this cloud I (water vapor) cool down and turn back into liquid water.I and other water droplets condense onto one another.We grow until we get to heavy to stay in the cloud and then I fall back to earth as rain!
Explanation:
Carbon dioxide (CO2) is released during which of the following stages of cellular respiration?
Answer:
During glycolysis carbon dioxide is released
Explanation:
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The Earth's uppermost layer is made up of tectonic plates. The primary tectonic plates are shown on the map below. Image courtesy of the USGS At the boundaries of tectonic plates, rock materials A. are brought to Earth's surface from its interior and to Earth's interior from its surface. B. cannot be found due to the process of melting. C. are only brought to Earth's interior from the surface. D. are brought to Earth's surface through the process of erosion.
Answer:
A
Explanation
A. are brought to Earth's surface from its interior and to Earth's interior from its surface.
The tectonic plate boundaries, rocky material brought to the Earth's surface from its interior and from the Earth's surface to its interior. So, the correct option is A.
What are Tectonics plates?Tectonic plates are defined as huge pieces of Earth's crust and uppermost mantle that are made up of oceanic crust and continental crust. Earthquakes occur around major faults that mark mid-ocean ridges and plate edges.
These plates act like hard and rigid shells in comparison to Earth's mantle which is the strong outer layer called lithosphere. At tectonic plate boundaries, rocky material is brought to the Earth's surface from its interior and from the Earth's surface to its interior.
Therefore, the correct option is A.
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Study the diagram of a cell.
Which structures are found in both plant and animal
cells?
O W and X
O W and Z
O X and Y
Y and Z
Help me please
25-1
Seasonal
Forest
Biome
Productivity
Kcal/m2/year
i Thom Scrub
Grasse
Desert
TROPICAL
20-
Scrubber Semi Dosen
Tundra
600
IS-
TEMPERATE
Grassland
2000
10-
Mean Annual Temperature (°C)
Pesert
200
0-
Seasonal
Forest
6000
5-11
Tundra
Rainforest
9000
10-
Scrubland
1000
500 1000 1500 2000 2500 3000 3500 4000
Mean Annual Precipitation (mm)
Based on the data given in the graph and table, which environmental factor contributes
to greater biodiversity?
O Plant biomass per meter
0 Available water
Average latitude
0 Average temperature
Answer:
18000
Explanation:
you add all the mean Annual precipitation
If an equal force is applied to each of the following, which would be the least affected?
A.
5kg hummingbird
B.
90kg cheetah
C.
2,000kg schoolbus
D.
6,000kg airplane
Natural selection occurs when:____.
a. a factor in the environment alters the genetic information in DNA of all members of a species.
b. only when nonrandom mating occurs.
c. a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.
d. when a small number of individuals of a population break away and form a new population.
Answer: The correct option is C.
a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.
Explanation:
It is a new genetic variation occurs that allows individuals to have a reproductive and survival advantage because natural selection is a survival mechanism in which organisms develop a variation in genetic traits or develop characteristics which help them to reproduce,survive,adapt to their environment and pass on these characteristics to their offsprings which can be transfer to generations.
Which BEST describes the process of aerobic cellular respiration?
A: a process of energy cornversion that releases energy from food in the presence of Oxygen, forming new cormpounds
B: a process of energy conversion that captures light energy and transforms it into chemical energy
C: a process of energy trarsfer that converts liquid water into water vapor
Answer:
B.) A process of Energy conversion that captures light energy and transforms it into chemical Energy.
Explanation:
Aerobic respiration is the process of producing cellular energy involving oxygen. Cells break down food in the mitochondria in a long, multistep process that produces roughly 36 ATP. The first step in is glycolysis, the second is the citric acid cycle and the third is the electron transport system.
Intense heat at Earth's core creates
in the mantle, which in turn
leads to movement in the
Intense heat at Earth's core creates movement in the mantle, which in turn leads to movement in the crust as the earth has three layers, such as the innermost core and the outermost crust layer.
What is the significance of the earth's layers?The earth is composed of several layers, each with unique properties and characteristics, such as the core, mantle, and crust, the core is made up of two layers: the inner core and the outer core, while the inner core is made up of solid iron and nickel and the outer core is a liquid layer of iron and nickel, the mantle is the thickest layer of the earth and is made up of solid rock present outside of the core, and the crust is the outermost layer of the earth and is made up of solid rock.
Hence, intense heat at Earth's core creates movement in the mantle, which in turn leads to movement in the crust as the earth has three layers, such as the innermost core and the outermost crust layer.
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Which statement is most true about technological design
A. There is only one single best solution to most problems.
B. Tradeoffs are often avoided.
C. There is no room for creativity in design.
D. There may be multiple solutions to a single problem.
Technological design provides multiple solutions to a single problem.
What is technology?Technology is the application of scientific knowledge to produce tools for use of man to make life more comfortable and work easier.
Technological design refers to the various designs of tools used by man.
Technological design ensures that there are multiple tools available for man to solve a particular problem.
For example, cars, ships and aeroplanes are various technological design for transport.
Therefore, technological design provides multiple solutions to a single problem.
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What is a waste product must be removed from the body
Answer: Excretion is the removal from the body of waste products which result from normal life processes. Waste products such as carbon dioxide must be removed. If they are allowed to accumulate they cause poisoning which slows down vital chemical reactions.
Explanation:
Which of the following organisms would use cellular respiration in mitochondria
to produce ATP for their energy needs? *
1.ducks
2.frogs
3.bacteria
4.grasses
6.sharks
7.snakes
8.trees
9.bears
Answer:
Frogs, ducks, sharks, snakes, bears, grasses, and trees.
Everything except bacteria.
Explanation:
All eukaryotes use cellular respiration in the mitochondria.
Prokaryotes, such as bacteria, do not have a mitochondria.
How many sig figs in 4737
Answer:
There are four significant figures.
Explanation:
Significant figures:
The given measurement have four significant figures 4.7.3 and 7.
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.
Zero between the non zero digits are consider significant like 104 consist of three significant figures.
The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.
Which wavelength of light are more stretched—red light or blue light?
Answer:
Red
Explanation:
Blue light has a shorter wavelength than red.
DNA is composed of two complementary strands this is reflected in the fact of that
Answer: The number of adenines in one strand is equal to the number of thymines in the complemetary strand.
Explanation:
Deoxyribonucleic acid or DNA is a molecule that contains the genetic information in all living organisms. So it contains all the hereditary genetic information that has the instructions to development. This DNA molecule consists of two strands that bond together to form a double helix structure. Each strand of DNA is made up of nucleotides which are basic chemical components made of a phosphate group, a sugar group and one of four types of alternative nitrogenous bases. The four types of nitrogenous bases found in the nucleotides are:
Adenine (A)Thymine (T)Guanine (G) Cytosine (C).The sequence of these bases determines how genes are made, and each gene has different biological instructions to create proteins (that will have different functions in the organism). To form a DNA strand, the nucleotides are linked together in chains, alternating with the phosphate and sugar groups.
The nitrogenous bases are complementary between them. Adenine and thymine are complementary, as are guanine and cytosine. So since adenine is complementary to thymines, and cytosine is complementary to guanine, the number of adenines in one strand is equal to the number of thymines in the complemetary strand. And the number of cytosine is equal to the number of guanine.
DNA is composed of two complementary strands this is reflected in the fact of that - The amount of adenine in one strand is always equal to the amount of thymine in the complementary strand.
A stable double helix of DNAthe two strands of DNA are antiparallel which means if one strand is, the 5' → 3' direction of one strand runs opposite to the other strand.The two DNA chains are held together by complementary base pairing between A and T bases and between G and C bases.The hydrogen bonds are found between the bases of the two strands of nucleotides.Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine.This is called complementary base pairing.
Thus, DNA is composed of two complementary strands this is reflected in the fact of that - The amount of adenine in one strand is always equal to the amount of thymine in the complementary strand.
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At birth Himalayan rabbits are usually
white over their entire bodies. But
when parts of their bodies reach
temperatures below 35°C, a pigment
that causes these parts to turn black is
produced. Which of the following is
most likely the cause of this
phenomenon?
Answer:
C
Explanation:
because i took the test and got it right
The Himalayan rabbits are usually white but they show gene expression that is regulated by temperature. Hence option C is correct.
What are Himalayan rabbits?The Himalayan rabbits are rare rabbits that is medium-sized and they show coloration during the changes in temperatures.
These rabbits are one of the oldest and calmest breeds. The gene expression leads to them having brown and black coats with a change in the climate.
Find out more information about the himalayan rabbits.
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You and your friend want to see how changing the type of liquid (e.g. water, milk, orange juice) given to a plant affects how high it grows. What would be the independent variable in this experiment?
SELECT AN ANSWER
1)the type of plant used
2)the temperature of the air
3)the type of liquid
4)the height of the plant
Answer:Hi! It’s the type of liquid/third answer
Explanation:
This is the independent variable because it’s the component of the experiment that is being changed to measure the results.
4. How did the pH of the water affect the hatching of the brine shrimp?
I
A science class is checking to see how much life exists in local streams. The students each go to a stream and take a sample of water. What step of the scientific process is this? O A. Collecting data B. Forming a hypothesis C. Drawing conclusions D. Peer reviewing
Answer:Collecting data
Explanation:
The students had gone to the stream and took a sample of water from it. That is, they collected the water sample for further analysis. Thus, the correct option is A.
What are the steps of scientific process?1. Formation of Hypothesis: A research problem is first decided which the researcher wants to look into. Accordingly, a hypothesis is formulated based on the problem.
2. Collection of Data: Depending upon the research problem, an appropriate sample is specified from which the relevant data is collected either through experiments or different types of surveys.
3. Analysis of Data: Once the data is collected, it is processed to obtain the desired results after statistical, graphical or computational analysis. The hypothesis is also tested statistically.
4. Results and Interpretation: Based on the observations and analysed data, the hypothesis is accepted or rejected and interpretation is made accordingly and the final result is drawn.
5. Drawing Conclusion: A conclusion is drawn in line with the results and solution is suggested for the research problem.
6. Submission of Research Project: The final report of the project is submitted for acceptance and review.
7. Peer Review: The project report is reviewed by experts of that particular field for any corrections or suggestions.
8. Publication: After the review is done and the final version is accepted, the project report is sent for publication in relevant journals.
Thus, the correct option is A.
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Having an accurate model of an atom is important except..
A. It can help give information on how atoms work.
B. We use the model to learn how to create new things.
C. Learning about atoms will help create better organisms.
D. It can help support the explanation of the origin of the universe.
How they worded this question does not make sense to me.
Answer:
I think the answer is D. but I'm not 100% sure.
Answer:
The answer to your question is going to be A.
Explanation:
It teaches us how atoms work. and it also gives us more information about how and what they are!!
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What causes nucleotides to switch locations in a DNA molecule?
Answer:
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful.
Explanation:
The location on earth surface above the point where an earthquake start is
Answer:
The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter.
Explanation:
Answer:
The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter.
hope this helps
how are logistic and exponential growth similar?
Answer:
because both are same words
Explanation:
Answer:
Both growth models begin with a population that is growing at a constant rate.
Logistic growth follows a period of exponential growth, as population growth slows or stops.
Exponential growth is only possible when resources are unlimited.
Logistic growth shows what happens when resources become scarce and population growth slows.
Explanation:
Explain how the structure of a cell’s membrane is related to its functions.
Which of these causes the day/night cycle on earth
Answer:
Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.
Explanation:
hope it becomes helpful to you ☺️☺️
good luck
Answer:
Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.
Explanation:
:) hope this helps!
You read an article on a website that suggests that there may be a new form of cancer-causing mutagen that causes the DNA backbone structure to be disrupted in its normal sequence. Using your knowledge of the structure of the DNA molecule, explain how you might hypothesize such a mutagen might impact the ability for the DNA molecule to do its job effectively.
Answer:
The mutagen might alter the DNA sequence, thereby altering the accessibility to transcription factors and thus activate the expression of oncogenes involved in cell proliferation
Explanation:
The DNA molecule consists of two antiparallel strands of nucleotides that wind around each other. Each DNA strand is formed by a backbone containing sugar (deoxyribose) and phosphate groups. This arrangement allows for DNA replication and transcription (and consequently also protein synthesis) to occur. If a mutagen agent binds to DNA, this might modify its structure, thereby altering DNA replication and transcriptional activity.
Which organelle is the site where energy is made in an animal cell?
A. Golgi bodies
B. Nucleus
C. Endoplasmic Reticulum
D. Mitochondria
Answer:
D
Explanation:
Answer:
D
Explanation:
The Mitochondria is the power house of a cell
If the moon moves farther away from the earth the earths oceans will experience what? 
Answer:
flatten out, less waves, become more calm, no more tides
Explanation:
Match the term to its definition.
control group, data, hypothesis, inference
observations that may be quantitative or qualitative
a tentative, testable scientific explanation
useful for determining the effect of the independent variable
a logical interpretation based on prior knowledge
Explanation:
hypothesis is the last one
data is the 3rd one
inference is the 2nd one
and control group is the first one
process of elimination is your best friend
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