B. Solution D only
Solution D is the dependent variable in this experiment.
The variable being measured or tested in an experiment is known as the dependent variable.
What makes up the experiment's independent variable?
The experimenter adjusts or manipulates the independent variable, which is thought to have an immediate impact on the dependent variable.
Let's use "Test Scores" as an example. You're interested in how studying or sleeping affects test results. The dependent variable in the case is "test score." The independent variable is "studying" or "sleeping" because these variables affect how well a student performs on the test.
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The dependent variable in the experiment with de-shelled eggs in different solutions is the mass of the eggs after 24 hours. It is what was measured to determine the effects of the solutions.
The dependent variable in the experiment with the de-shelled, raw chicken eggs placed in different solutions is D. Mass of the eggs after being in the solutions for 24 hours. This is the outcome that the biology students would have measured to determine the effect of each solution. The dependent variable changes in response to the independent variable, which in this case are the four different solutions (A, B, C, and D).
In experiments, the independent variable is the one that is changed or controlled in order to see its effects on the dependent variable. The dependent variable is what is being measured or tested. For example, when a scientist grew bacteria on two types of gels to compare growth rates, the type of gel used is the independent variable, and the growth of the bacteria (number of bacteria present after 24 hours) is the dependent variable.
In a double-blind experiment _____.
the experimenter knows what the experiment is about
the experimenter knows what the experiment is about, but the people in the experiment do not
neither the experimenter nor the people in the experiment know what the experiment is about
both the experimenter and the people in the experiment know what the experiment is about
Answer:
In a double-blind experiment neither the experimenter nor the people in the experiment know what the experiment is about.
Explanation:
A double-blind experiment is when both parts lack information about the experiment, or the information that they have does not influence the results. Past experiences in the life of both experimenter and people on the experiment, can bias the results. To reduce or eliminate biases in the results, double-blind experiments are developed. Therefore, the people that designed the experiment do not administrate it.
When scientists first started mapping human genes, they estimated that there were about 2 million genes. By the late 1990s, it was thought that there were only 100,000 genes, and then that number shrank to 19,000 in 2001. Most scientists now believe that humans have about 21,000 genes. Which statement describes these estimates?
I have the options on e2020. So first, we can definitely mark out D because no way did they stay the same over time. We can cross out B because as scientist "upgrade" over the years, their work will become MORE accurate. Not LESS accurate. So then we are left with A and C. We can cross out C because its doesn't really become accurate and less accurate over time. Then we are left with A which is our answer because scientist can only become more accurate as time goes by with all the new technology advancements they're making.
Hope this helped!! :D (please read whole thing so you understand)
Answer:a
Explanation:
a
What is true about lagging strand during dna replication a.It has the same sequence as the leading strand b.It contains okazaki fragments c.It is synthesized before leading strandd.It is synthesized in the 5 to 3 direction
Correct answer: It contains okazaki fragments
During DNA replication two strand is formed one is called leading strand and another is called as lagging strand. Leading strand is said to be parent strand and it replicate in 3'-5' direction, while lagging strand replicate discontinuously in 5'-3' direction.
Lagging strand is one of the two strand which is found in the DNA, which replicates discontinuously in the form of short section. These sections are called as okazaki fragments.
Okazaki fragments found in eukaryotes are in the size range of 1000 to 2000 nucleotides and in prokaryotes it is 100 to 200 nucleotides long.
which statement best describes how a catalyst can speed up a chemical reaction ?
A. the catalyst makes lower energy pathways available.
B. the catalyst increases the concentration of products.
C. the catalyst binds to enzymes to release substrates.
D. the catalyst increases the concentration of reactants.
A. the catalyst makes lower energy pathways available.
Answer:A
Explanation:
PLEASE HELP
Interpreting the results of an experiment requires critical thinking skills and the ability to make connections across data. Which skill would most likely benefit a scientist who is doing this?
Creativity
Inflexibility
Time management
Memorization
d memorization
hope this helped <3
25 POINTS
Which of these reproductive strategies are meant to ensure survival of the offspring?
A. A male sea horse carries its young in its sack
B. A peacock displays its brightly colored feathers.
C. Baby crocodiles travel on their mother’s back.
D. Bees visit the flowers of plants.
E. Birds eat fruits from trees.
The reproductive strategies meant to ensure the survival of the offspring are A, where a male seahorse carries its young in its pouch providing a protective environment, and C, where baby crocodiles travel on their mother's back for protection against predators.
Among the options provided for reproductive strategies meant to ensure the survival of the offspring, the correct choices relate to the direct care and protection of the young animals by their parents. Specifically, choices A and C involve direct protection and nurturing of offspring, which are key aspects of successful reproductive strategies in many animal species.
A. A male sea horse carries its young in its sack: This is an example of a unique reproductive strategy in seahorses, where the female lays eggs in the male's abdominal brood pouch, and the eggs are fertilized within this pouch. The male then gestates the young until birth, which provides a safe environment for the offspring during their development, greatly increasing their chances of survival.C. Baby crocodiles travel on their mother's back: This behavior provides protection to the young crocodiles from potential predators during their early life stages when they are most vulnerable.Conversely, choices B, D, and E are related to different aspects of animal behavior and do not directly contribute to the protection of offspring.
A DNA molecule has the sequence GCATCCGA. What is the mRNA sequence resulting for this DNA code? A) CCTAGGCT B) CGTAGGCT C) CGUAGGCU Eliminate D) GCATCCGA
id say the answer is C
Under which branch of oceanography would one study the water cycle?
Please help me
Marine Geology
Tell me if I'm right.
which is not a major biogeochemical factor
A dentist hypothesizes that patients that floss their teeth every day will have fewer cavities than those that don't. He questioned several of his patients regarding their flossing habits and then compiled the table found below. Patient Name Flosses daily? Number of cavities Jamal Y 2 Kendra N 4 Stephanie N 1 Brandy Y 3 Travis Y 1 Does the dentist's data support his hypothesis? A. Further research is needed. B. Yes; flossing daily prohibits the formation of cavities. C. No; flossing daily actually increases the number of cavities. D. Yes; flossing daily definitely reduces the number of cavities.
Im not sure, but i think its a because you need more evidence and its not an even amount of people, good luck though
Answer:
A.) Further research is added
Explanation:
There are not enough people that were questioned therefore you would need more people to test. I did the Study Island.
What would happen if translation did not occur?
Translation is the reading of the mRNA into a protein. If translation didn't occur, then there would be no proteins made, and hence life would cease (you need proteins for life).
Translation is necessary for synthesizing proteins from amino acids, which are important for the structure and function of cells. Errors or absence of translation could lead to the production of defective proteins or halt the protein production altogether, leading to a variety of hereditary and age-related diseases.
Explanation:Translation is the biological process utilized by ribosomes to synthesize proteins from amino acids. If translation did not occur, the correct proteins would not be made. These proteins are essential for building important body tissues and carrying out vital functions. For instance, these proteins might be crucial in neuronal communication. In the absence of translation, the body's cells would be unable to execute these functions optimally, leading to various issues. Errors in translation could lead to the production of defective proteins or halt the production altogether, leading to a variety of hereditary and age-related diseases.
An example of a translation failure can be the mutations in tRNA and rRNA, which would lead to the production of defective proteins or a complete cessation of protein production. Furthermore, if translation termination does not occur properly when encountering a nonsense codon, the produced proteins would not be released correctly, leading to further complications. Thus, without translation, life as we know it would not be possible, as every function in our body relies on the proteins synthesized by this process.
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True or false only a producer can use the suns energy or chemical energy to make food
This is true good luck on your test.
The statement "only a producer can use the sun's energy or chemical energy to make food" is true.
Who are the producers?A producer is a person who develops and offers products or services. Producers combine labor and capital, also known as factor inputs, to produce, or turn into another thing.
Business firms are the primary producers that economists typically refer to when discussing producers. The only organisms that can harvest energy from sunlight or chemicals and use it to create food are plants, some algae, and specific bacteria.
These creatures are referred to as autotrophs. In environments without sunlight, such as some marine ecosystems, this process is known as chemosynthesis.
Therefore, the statement is true.
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The external coverings of diatoms are made up of , while slime molds have cell walls containing . Diatoms are because they make food through photosynthesis, while slime molds are because they eat decaying plant matter.
The external coverings of diatoms are made up of silica, while slime molds have cell walls containing cellulose. Diatoms are autotrophs because they make food through photosynthesis, while slime molds are heterotrophs because they eat decaying plant matter.
1. Diatoms are single-celled organisms that belong to the group of algae known as Bacillariophyta. They have a unique external covering called a frustule, which is made up of two overlapping halves that fit together like a pillbox. The frustule is composed of silica, a hard, glass-like substance. This silica shell gives diatoms their intricate and beautiful shapes, and it also provides protection for the cells.
2. Slime molds, on the other hand, are not true molds or fungi. They belong to the group of organisms known as protists. Slime molds have cell walls made of cellulose, which is a complex carbohydrate found in the cell walls of plants and some other organisms. The cellulose provides structural support and protection for the slime mold cells.
3. Diatoms are autotrophs, which means they can produce their own food through photosynthesis. They have chloroplasts, the organelles responsible for photosynthesis, which contain chlorophyll and other pigments. These pigments capture sunlight and convert it into chemical energy, allowing diatoms to synthesize organic compounds, such as glucose, from inorganic substances like carbon dioxide and water.
4. Slime molds, on the other hand, are heterotrophs, which means they cannot produce their own food. They obtain nutrients by ingesting organic matter, such as decaying plant material or bacteria. Slime molds use enzymes to break down the organic matter into simpler molecules that can be absorbed and used as a source of energy and nutrients.
In summary, diatoms have silica-based external coverings and are autotrophs that make food through photosynthesis. Slime molds have cellulose-based cell walls and are heterotrophs that obtain nutrients by consuming decaying plant matter.
Complete question :-
The external coverings of diatoms are made up of , while slime molds have cell walls containing . Diatoms are because they make food through photosynthesis, while slime molds are because they eat decaying plant matter.
When you go down the food chain by keep asking the question what does it eat at what catogory of living things do you always end up
Herbivore.
Hope this helps!
Discuss the connection that can exist between a season of acorn production and an increase in the number of cases of lyme disease
Acorns are an important food source for the white-footed mouse which is popular target of the ticks that carry the Lyme bacterium and transmit it to the host like human.
Lyme disease is an infection disease characterized by The an expanding area of redness on skin, followed by rash. Other e symptoms may include fever, headache and tiredness. Lyme disease is transmitted to humans by the bite of infected ticks (genus Ixodes).
What refers to the amount of a substance in a given space
Volume? Is that what you mean?
When calcium blood levels fall, one of the body's glands releases a special hormone that increases calcium levels. This is an example of _____.
A. positive feedback
B. negative feedback
C.neutral feedback
Answer:
A. positive feedback
Explanation:
How is a covalent bond formed between atoms?
A: by the sharing of protons
B: by the sharing of electrons
C: by the transferring of protons
D: transferring electrons
B. by the sharing of electrons
Answer choices A and C are incorrect because covalent bonds form as a result of electrons (protons are kind of irrelevant). Answer choice D is incorrect because it describes an ionic bond.
Further study topics: water polarity, hydrogen bonds, free radicals, valence electrons, and more!
What is the main type of energy used to help convert metamorphic rocks into igenous rocks in the rock cycle
A Hydra is an aquatic organism that lives in fresh water. During reproduction an outgrowth begins to form on the parent. The outgrowth continues to develop into the daughter organism and eventually breaks off of the parent. Which type of reproduction does this represent? A.Budding b.Regeneration c. Vegetative propagation d. Binary fission
The correct answer is: A.Budding
This is the asexual reproduction of hydra which involves production of buds in the body wall. When the buds grow enough to be miniature adults and become mature, they break away and the new organism is formed. This can happen every two days if the conditions are good for hydra (enough food). When conditions are harsh, sexual reproduction occurs.
Answer:
The answer is Budding.
Explanation:
Got it correct on mastery test
Why does the water seem to mix quickly in some cases while other times water mixes slow
Answer:
It depends what direction the heat is heading.
Explanation:
Because heat moves upwards, it takes a longer time for heat to move downwards toward a substance below the hotter factor.
The rate at which water mixes is influenced by factors such as temperature differences, viscosity, and the type of mixtures involved. Thermal energy transfers drive mixing in cases with significant temperature difference. Viscosity and chemical behaviors of substances also impact the mixing process.
Explanation:
The rate at which water mixes can vary due to several factors such as temperature difference, viscosity, and the nature of the mixtures involved. In the case of temperature difference, when two bodies of water with different temperatures mix, the energy transfers from the hotter mass to the colder one, ultimately leading to a uniform temperature. This process is driven by an increase in entropy. So, if the temperature difference is vast, the mixing might appear to happen more quickly.
Viscosity is another factor to consider. It describes the resistance of a fluid to flow. Fluids with higher viscosity (like syrup) flow slower compared to those with low viscosity (like water), thus affecting the mixing rate.
Lastly, the type of mixtures involved also influences the rate at which water mixes. In a simpler mixture, like mixing water with more water, the process is genuinely quicker. However, if water is mixed with a complex mixture (like substances in a swimming pool), it requires more time for complete homogeneity due to the different substances' chemical behaviors.
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What are the two major differences between a plant cell and an animal cell?
The mitochondrion is host to which portion of cellular respiration? (2 points)
A. Glycolysis
B. Alcoholic fermentation
C. Lactic acid fermentation
D. The Krebs cycle
The mitochondrion is host to The Krebs Cycle
It would be the Krebs Cycle!
Hydrogen bonds can form between regions of polar molecules that are
a)
nonpolar.
c)
negatively charged.
b)
uncharged (neutral).
d)
oppositely charged.
The answer to your question is,
D) Oppositely charged.
-Mabel <3
Hydrogen bonds can form between regions of polar molecules that are oppositely charged.
For a hydrogen bonds to form, a molecule that has hydrogen attached to an atom of high electronegativity and another molecule that has another electronegative atom with high electronic density (that is, a negative partial charge) is required.
When both molecules are brought together by hydrogen, a weak bond called a hydrogen bridge is generated.
A molecule is a dipole when there is an asymmetric distribution of electrons because the molecule is made up of atoms of different electronegativity.
As a consequence, the electrons are preferably in the vicinity of the most electronegative atom.
This creates two regions (or poles) in the molecule, one with a negative partial charge and the other with a positive partial charge
The bonds will be the more polar the greater the difference in electronegativity between the bonded atoms.
Therefore, we can conclude the hydrogen bonds can form between regions of polar molecules that are oppositely charged, having opposite charges, these two parts of the atom attract each other.
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Why are compounds different from single elements?
A When elements form a compound, the bonds and structure of the elements
change.
B When elements form a compound, the masses of the elements increase.
C When elements form a compound, the masses of the elements decrease.
D When the elements form a compound nothing is different.
Order the steps in the process of fertilization
Answer:
The correct steps in the process of fertilization are as follows:
-The ovary releases an egg
-A sperm enters the egg,
-The fertilized egg travels out of the fallopian tube ,
-The fertilized egg attaches to the lining of uterus.
Explanation:
Fertilization is the process of formation of zygote by the fusion of female gamete (egg) and male gamete (sperm).
Each month an egg is released by an ovary. During copulation, the sperm enters and fuses with an egg. The site of fertilization is fallopian tube. The fertilized egg moves out of the fallopian tube for implantation. The implantation of fertilized occurs in the uterus, during which fertilized egg attaches to the lining of uterus.
The process of fertilization in correct order is: The ovary releases an egg[tex]\rightarrow[/tex] [tex]\rightarrow[/tex] A sperm enters the egg [tex]\rightarrow[/tex] The fertilized egg travels out of the fallopian tube[tex]\rightarrow[/tex] The fertilized egg attaches to the lining of the uterus.
Fertilization is the process by which a sperm cell and an egg cell combine to form a single cell called a zygote. This process is necessary for sexual reproduction to occur in many organisms, including humans.
During fertilization, a sperm cell must first travel through the female reproductive tract to reach the egg cell. The egg cell is released from the ovary and travels down the fallopian tube, where it may be fertilized by a sperm cell. If a sperm cell successfully penetrates the egg cell, the two cells merge to form a single cell called a zygote. The zygote then begins to divide and grow as it travels down the fallopian tube towards the uterus.Once the fertilized egg reaches the uterus, it must attach to the lining of the uterus in order to continue developing.Therefore, the correct order for the process of fertilization is:
1. The ovary releases an egg
4. A sperm enters the egg
3. The fertilized egg travels out of the fallopian tube
2. The fertilized egg attaches to the lining of the uterus.
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A fish feeds on algae in a pond. As a result, there is an energy transfer between trophic levels in the ecosystem.
What is the name of the cellular process that releases energy from the algae so it can be used by the fish?
A. photosynthesis
B. homeostasis
C. thermoregulation
D. cellular respiration
Answer: D. cellular respiration
Explanation:
Cellular respiration is a process which involves the break down of glucose molecules into water and carbon dioxide present in the food so as to release energy in the body in the form of ATP and also releases wastes.
The fish being a consumer in the food chain will eat algae as a food source. The cellular respiration process in fish will break down the glucose molecules in the algal food and will provide energy to the fish.
Answer:
C. Cellular respiration
Explanation:
Who was the first person to classify fingerprints in to worlds loops in arches
The correct answer is Francis Galton.
He discovered three kinds of a pattern of fingerprints, that is, arches, loops, and whorls. Arches are witnessed in approximate 5 percent of the patterns of fingerprints encountered. Loops take place in approximately 60 to 70 percent of the patterns of fingerprints encountered.
While the whorls are witnessed in about 25 to 35 percent of the pattern of the fingerprints encountered.
Answer:
The answer is Francis Galton.
Explanation:
He found three sorts of an example of fingerprints, that is, curves, circles, and whorls. Curves are seen in rough 5 percent of the examples of fingerprints experienced. Circles occur in roughly 60 to 70 percent of the examples of fingerprints experienced. While the whorls are seen in around 25 to 35 percent of the example of the fingerprints experienced.
1. In osmosis, water always moves toward the ____ solution: that is, toward the solution with the ____ solute concentration.a. Isotonic, greaterb. Hypertonic, greaterc. Hypertonic, lesserd. Hypotonic, greatere. Hypotonic, lesser
Answer:
The correct answer will be option-B (Hypertonic, greater).
Explanation:
Osmosis is the movement of water molecules via a semi-permeable membrane which depends on the solute concentration of the solution.
The water always moves from low solute concentration with high water potential to high solute concentration with low water potential.
The hypertonic solution is the solution which contains a high amount of solute due to which water potential decreases. As a result of this water molecules will move to the hypertonic solution with less amount of water.
Thus, Option-B is the correct answer.
what is the difference between sex-linked traits and autosomal traits in humans
Females are homologous, XX, for the sex chromosomes, whereas males are heterozygous, XY. ... Does it make a difference if the gene is located on a sex chromosome or an autosome? It might. Autosomal-linked traits are due to genes on the autosomes; sex-linked traits are due to genes located on the sex chromosomes.
Sex-linked traits are passed along on the X or Y chromosome. Autosomal are passed on the other 22 non-sex chromosomes.