By moving warm water & precipitation from the poles to the equator & equator toward the poles back to the tropics, ocean currents function much like a conveyer belt.
As a result, currents control the climate globally, helping to balance out the unequal distribution of solar energy that reaches the surface of the Earth. NASA has noted how sea levels will rise as the Earth warms. Warmth causes water to expand. Because warm water occupies more space in our oceans, sea levels rise as a result. Melting ice on land is another factor contributing to ocean rise. By moving warm water or precipitation from of the equator to the poles and equator toward the poles back to the tropics, ocean currents function much like a conveyor belt.
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germination is prematurely halted so doesn't break down completely and is presn the mashing step, enzymes convert into a disaccharide called .
Germination is prematurely halted so starch doesn't break down completely and is presn the mashing step, enzymes convert into a disaccharide.
Germination is the emergence of a seed, spore, or other reproductive body following a period of hibernation. Water absorption, the passage of time, cooling, warming, oxygen availability, and light exposure may all play a role in commencing the process.
Seed Germination: It initiates the growth process by activating enzymes. The seed initiates its internal physiology and begins to respire, make proteins, and digest the stored food.
To germinate, all seeds require water, oxygen, and the correct temperature. Some seeds also require adequate lighting. Some germinate better in direct sunlight, while others prefer darkness to germinate.
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Can you match these key science terms with their definitions?Drag the terms on the left to the appropriate blanks on the right to complete the sentences.1. The type of test that changes only one variable at a time in order to isolate the results is known as a controlled experiment.2. The one variable that is manipulated by a scientist as a potential cause in an experiment is the independent variable.3. The dependent variable is the factor a scientist observes to see the effect of the change made.4. A control group establishes a base line for an experiment.5. A negative control is a group in which no response is expected.6. A positive control is a group in which a known response is expected.7. In a single-blind experiment, the researchers--but not the participants--know who receives the treatment and who does not, to eliminate subjective bias.8. In a double-blind experiment, neither the participants nor the researchers know who receives the treatment and who does not.
The key science terms with their definitions are
1. The type of test that changes only one variable at a time in order to isolate the results is known as a controlled experiment.
2. The one variable that is manipulated by a scientist as a potential cause in an experiment is the independent variable.
3. The dependent variable is the factor a scientist observes to see the effect of the change made.
4. A control group establishes a baseline for an experiment.
5. A negative control is a group in which no response is expected.
6. A positive control is a group in which a known response is expected.
7. In a single-blind experiment, the researchers--but not the participants--know who receives the treatment and who does not, to eliminate subjective bias.
8. In a double-blind experiment, neither the participants nor the researchers know who receives the treatment and who does not.
“Blinding” is а procedure in which one or more persons in the reseаrch triаl аre kept unаwаre of the treаtment аssignment(s). Single-blind usuаlly meаns thаt the reseаrch pаrticipаnt is not told of the treаtment аssignment. Double-blind usuаlly meаns thаt the reseаrch pаrticipаnt, investigаtor, study coordinаtor/nurse, and study sponsor, аnd in some cаses the dаtа аnаlyst аre kept unаwаre of the treаtment аssignment. The purpose of а “blinded” study design is to remove the unintentionаl biаs thаt cаn аffect the interpretаtion of the reseаrch informаtion thаt is collected if the treаtment аssignment is known.
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Sweet pea plants have a diploid (2n) chromosome number of 14. Which of the following best explains how the sweet pea plants in the parental generation produce F1 offspring with 14 chromosomes? Meiosis II and IIII lead to the formation of cells with 7 chromosomes.
The option "C" holds best explanation for how the sweet pea plants in the parental generation produce F1 offspring with 14 chromosomes.
how the after fertilization of parental sweet pea plants got offspring with 14 chromosomes?Seven chromosomal cells are created by meiosis I and II. Homologous chromosomes split during meiosis I. Sister chromatids split in meiosis II. When two cells unite during fertilisation, 14 chromosomes are produced in the baby.
What split up in meiosis 1 and 2?Before meiosis II, homologous pairs of cells separate into chromosomes while in meiosis I. These chromosomes would be further fragmented into sister chromatids after meiosis II. Meiosis II does not involve genetic material crossing across or integrating between chromosomal pairs, whereas meiosis I does.
When do homologous chromosomes dissociate during meiosis?In anaphase I, spindle fibres associated to the centrioles pull the sister chromatids pairs apart and to the opposite poles of the cell. Telophase I marks the termination of this initial cell division process.
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Sweet pea plants have a diploid (2n) chromosome number of 14. Which of the following best explains how the sweet pea plants in the parental generation produce F1 offspring with 14 chromosomes?
A) Meiosis II and IIII lead to the formation of cells with 14 chromosomes. When two cells combine during fertilization, extra chromosomes are randomly broken down, leading to offspring with 14 chromosomes.
B) Meiosis I and II lead to the formation of cells with 14 chromosomes. When two cells combine during fertilization, extra chromosomes with recessive traits are broken down, leading to offspring with 14 chromosomes.
C) Meiosis I and II lead to the formation of cells with 7 chromosomes. During meiosis I, homologous chromosomes separate. During meiosis II, sister chromatids separate. Two cells combine during fertilization to produce offspring with 14 chromosomes.
D) Meiosis I and II lead to the formation of cells with 7 chromosomes. During meiosis I, sister chromatids separate. During meiosis II, homologous chromosomes separate. Two cells combine during fertilization to produce offspring with 14 chromosomes.
Which characteristics of life does an automobile possess?
Metabolism is characteristics of life , an automobile possess
Why are automobiles regarded as non-living things?
An automobile appears to be alive since it can move and utilize energy, yet it cannot reproduce. To be considered alive, something must exhibit all five aspects of life. Automobiles, water, fire, and mountains are a few examples of nonliving things.
The only trait of life that an automobile might possess is metabolism, which enables it to consume and utilize energy (such as gasoline or diesel) while exhaling waste products like exhaust and water. It lacks any other aspects of life and is unable to accomplish this on its own.
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creation of the - barrier, which is a semipermeable structure that protects the brain from potentially toxic chemicals circulating in the blood, is an important function of glia.
Creation of the blood brain barrier, which is a semipermeable structure that protects the brain from potentially toxic chemicals circulating in the blood, is an important function of glia.
The brain is protected from poisonous substances in the blood by the blood-brain barrier (BBB), which is a specialized system of brain microvascular endothelial cells (BMVEC). It also provides nutrition to brain tissues and filters dangerous substances out of the brain and back into the bloodstream. BMVEC and other elements of the neurovascular unit, including as astrocytes, pericytes, neurons, and basement membrane, work closely together to ensure that the central nervous system (CNS) is functioning properly.
The BMVEC's luminal and abluminal membrane surfaces are functionally polarized. The BBB limits the transfer of therapeutic medicines into the CNS because of its constrained permeability. The pathogenesis of many CNS diseases is heavily influenced by BBB disruption or changes in transport networks. Such BBB disruption is frequently mediated by pro-inflammatory chemicals and specific disease-associated proteins. The regulation of the BBB structural and functional integrity emerges from shared intracellular pathways, despite the underlying reasons of BBB failure appearing to be different. The development of treatments to enhance BBB function in health and disease will be made possible by a better knowledge of tight junction control and factors affecting transport networks.
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Which statement below lists the essential components of a feedback loop and describes t function? Set point detects the regulated variable; integrator interprets the information and sends it to the ap effector, effector decides if it will react or not to the signal. Sensor detects a regulated variable: integrator interprets the information and sends it to the appropr effector, effector alters the regulated variable; organ system returns the body back to normal Sensor detects a regulated variable; set point is the value of the regulated variable; integrator interpre information and sends it to the appropriate effector, effector alters the regulated variable.Integrator interprets the information; set point is the value of the regulated variable; effector alters the regulated variable. Set point is the value of the regulated variable; integrator interprets the information and sends it to the appropriate effector; effector alters the regulated variable; set point is the point the variable must alwa return to. Duertis
The third statement lists the essential components of a feedback loop and describes their function: "Sensor detects a regulated variable; the set point is the value of the regulated variable; integrator interprets the information and sends it to the appropriate effector, effector alters the regulated variable."
A feedback loop is a control system in which the output is used to regulate the input. In this statement, the sensor detects the regulated variable, which is the variable that the system is trying to control. The set point is the desired value of the regulated variable that the system is trying to maintain. The integrator receives the information from the sensor and compares it to the set point.
The effector then receives the information from the integrator and decides whether or not to alter the regulated variable in order to bring it back to the set point. This is the process of a feedback loop that helps to maintain the regulated variable at the set point.
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Identifying Variables
1. What is the independent variable in part A of Barbara’s experiment?
2. List all the parts that were controlled in part A.
3. What is the independent variable in part B of this experiment?
4. List all the factors that were controlled in part B.
5. What can you conclude about how the mass of the pendulum and length of string affect the amount of time needed to complete 40 swings? Use the chart above.
1) The independent variable in part A is the mass of the pendulum
2) The parts that were controlled in part A are Length of string and the distance pulled
3) The independent variable in part B is the length of the string
4) The controlled factors are the mass of the pendulum and the distance pulled
5) The mass of the pendulum does not affect the completion times.
What is an experiment?We know that in an experiment, we have to vary the independent variable and this would in turn cause a change in the dependent variable. In the case that we have Barbara is trying to carry out an experiment that has to do with the simple pendulum.
In the first case, the mass of the pendulum was the variable that was varied while in the second case, the length of the pendulum is the variable that was varied.
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as the chromosomes of a parent cell are duplicated and distributed to the two daughter cells during cell division, the structure of the chromosomes changes. answer the three questions for each phase of the cell cycle by dragging the yes and no labels to the appropriate locations in the table. note: assume that by the end of the m phase, the parent cell has not yet divided to form two daughter cells.
As the chromosomes of a parent cell are duplicated and distributed to the two daughter cells during cell division, the structure of the chromosomes changes Sister chromatids form when DNA replicates in the S phase. The sister chromatids become individual chromosomes once they separate in early anaphase.
It is one of the two identical of a chromosome that has been replicated in preparation for cell division. A chromatid is defines as when chromosome replicates in a nucleus that have two identical forms strands joined at a centromere.
However the cell's DNA content does not return to its normal levels until after cytokinesis is complete and two daughter cells have formed and remains condensed until after the sister chromatids separate and the new daughter cells begin to form.
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question: An unknown sample of metal had a mass of 120g and it displaced 40ml of water when it was placed into a graduated cylinder. what is the density of metal
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1. Which is a true statement about a bilaterally symmetrical animal?
a. It has sense organs at its anterior end.
b. It has sense organs at its posterior end.
c. It has sessile characteristics.
d. It has no posterior.
Answer:
A true statement about a bilaterally symmetrical organism is that it has sense organs at its anterior end, so the correct option is A
Explanation:
Bilaterally symmetrical organisms refer to those that can be divided into mirror images along a midline called a sagittal plane. Bilateral symmetry is a characteristic feature of various kinds of organisms. We human beings are the best examples. Generally, these types of animals have sense organs at the front or anterior end. This helps them to find food easily.
They definitely have a posterior but the sense organs are not necessarily situated at that end.
Also, they do not have sessile characteristics. Sessile means fixed to one place. Free locomotion is generally associated with bilaterally symmetrical organisms.
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A tobacco plant can b made to express a gene from fireflies, resulting in emission of light. Which of the following is the basis for this phenomenon?
A. Chloroplasts can be made to produce light if firefly proteins are injected into plant cells.
B. Fireflies and tobacco plants share a recent common ancestor.
C. Fireflies and tobacco plants are infected by the same kinds of bacteria.
D. Transcription and translation are fundamentally similar in both fireflies and tobacco plants.
E. Most enzymes in fireflies have the same amino acid sequence as the enzymes in tobacco plants
Chloroplasts can be made to deliver light in the event that firefly proteins are infused into plant cells. Fireflies and tobacco plants share a new normal predecessor.
A phenomenon in an examination is what is happening or potentially process seen in reality that should be clarified by utilizing the logical technique.
In sciences, the word 'phenomenon' makes reference to any cycle seen in reality whose causes and additional outcomes still need to be explained.
phenomenon are clarified through a progression of consecutive strides altogether, which is known as the logical technique, it depends on exploratory methodology to test a given clarification (speculation) of these peculiarities.
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A tobacco plant can be made to express a gene from fireflies, resulting in emission of light, the basis for this phenomenon (D).Transcription and translation are fundamentally similar in both fireflies and tobacco plants.
When the bacteria should be introduced to the tobacco plants, the tobacco should be free of bacteria at that time, and this cannot glow. In addition, the gene should be transferred to the tobacco plant because both bacteria and fireflies had the same genetic makeup.
The tobacco plant, which has recently received a new gene injection, is a transgenic organism. The tobacco plant's DNA has been altered by the injection of a fire fly gene.
Tobacco, Nicotiana tabacum, is a herbaceous annual or perennial plant in the Solanaceae family that is grown for its leaves.
The firefly luciferase gene, a DNA segment that creates an enzyme that acts as the catalyst in the chemical that causes light in fireflies, was initially discovered by the scientists in order to make the auto luminescent tobacco. Cells from the tobacco plant were then injected with firefly DNA.
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a researcher has found variation in courtship dancing behavior among closely related species. she has determined that simple courtship dances are the ancestral form of the trait, while complex courtship dances are derived. this research approach is an example of which of the following? a. The experimental method b. The comparative method c. The observational method d. The statistical method e. The proximate method
The comparative method is the right answer. Relative system is about looking at an object of study in relation to another. The object of study is typically compared across space and/ or time.
Relative styles can be qualitative and quantitative. Frequently, there's a trade-off the further cases to compare, the lower similar variables available and vice versa. The relative system – involves comparing two or further analogous societies or groups which are analogous in some felicitations but varied in others and looking for correlations.
It sharpens our power of description and plays a central part in conception-conformation by bringing suggestive parallels and contrasts among cases into focus. Comparative method is routinely used in testing suppositions, and it can contribute to the inductive discovery of new suppositions and proposition- structures.
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This research approach is an example of the comparative method.
Looking at a study object in relation to another is what the relative system is all about. Typically, comparisons across place or time are made with the object of study.
A group of organisms that can reproduce with one another in nature and create healthy offspring is referred to as a biological species. Both qualitative and quantitative relative styles are possible. There is frequently a trade-off between the availability of related variables and the number of cases to compare, and vice versa. The relative system compares two or more analogous civilizations or groups that are similar in some felicitations but different in others, and it searches for correlations between them.
By drawing attention to suggested parallels and differences across situations, it strengthens our descriptive abilities and contributes significantly to conception-conformation. The comparative technique is frequently used to test hypotheses and can aid in the inductive development of new hypotheses and propositional structures.
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……….allow scientists to gather information about complicated and interrelated environmental systems.
1. Figures
2. Charts
3.Paradigm shifts
4. Models
5.Graphs
Answer:
Charts
Explanation:
Question 3 of 5
At the harbor, one man was stripped of his clothes and sent home after ---
A
B
C
D
he was identified as a British spy
he tried calling out to the guards on the dock
two colonists caught him threatening a British soldier
someone noticed he had tea in his pockets
The schoolteacher snoop. Ann Bates was one of the most successful British spies of the war and a Loyalist sympathizer who taught in Philadelphia. Soon after accompanying her husband, a British soldier and gunsmith, to his position in New York in 1778, she started spying on the British.
Who was a British spy in the Revolutionary War?Ann Bates was one of the most successful British spies of the war and a Loyalist sympathizer who taught in Philadelphia.Soon after accompanying her husband, a British soldier and gunsmith, to his position in New York in 1778, she started spying on the British. She met Major Duncan Drummond at the British camp, who took over for Major John André as the British commanding general's intelligence head. For the British Army, Drummond suggested using Bates as a spy.Women were frequently permitted unrestricted access to military camps at the time since it was generally believed that they were incapable of comprehending military concerns or the significance of what they saw or heard. As a result, Bates found it simple to enter the lines of the Continental Army and inform the British on troop movements, supplies, and the preparation of upcoming operations. Even two famous individuals gave her passes: General Charles Scott, who was then in charge of Washington's intelligence, and General Benedict Arnold, who was still in the early stages of his own spying.To Learn more About British soldier Refer To:
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