Activity 3 - Ice Breaker
Read the selection below. The story illustrates what an experiment is. Study and answer the
questions that follow.
Ice Breaker
Q1. For his investigation, why did Mr. Edison buy the same kind of fish as those that had died? *
1 point
Because he missed his fishes
Because that kind of fish is expensive
To make sure that his fish would have the same response behavior as the fish that died
To bring back the memories of the dead fishes
Q2. Why did he keep the fish on the aquarium he bought for two days before started his investigation? *
1 point
To ascertain that they can survive in their new environment
Because he is not yet ready with his experiment
To give time for the fishes to meet each other
Because he can't find a jar to keep the fishes
Q3. Why did he use identical jars in his investigation? *
1 point
It is the only type of jars available in the market.
It was necessary for all conditions to be identical except one: the experimental variable.
The fishes are fitted to the jars.
He used identical jars for no reason at all.
Q4. Why did he put ice cube in Jar No. 1? *
1 point
The fishes in jar no. 1 feel hot.
He learned that fishes in jar 1 loves cold water.
To find out if there would be a difference in the behavior of the fish in the two jars
He wants to kill the fishes in jar no. 1 to finish his investigation immediately
Q5. What did Edison want to find out from this experiment? *
1 point
The reason of the death of fishes in the aquarium
If fishes will survive in smaller jars
The reason why the maids put ice cubes in the aquarium
If he needs to fire his housemaids because of the death of the fishes.
pasagot pls needed ko na now
Answers
When performing an experiment, the researcher needs to define the variables: dependent -fishes response-, independent -the ice cubes' presence/absence -, and controlled -the jar and environmental conditions- variables.
-------------------------------------------------
Before performing any experiment, the researcher - Mr. Edison- needs to define the variables.
• Independent variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is modified to analyze its effects on another variable. The researcher changes on purpose the independent variable to observe the response of the dependent variable.
In the exposed example, the independent variable is the presence/absence of ice cubes.
• Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable.
In the exposed example, the dependent variable is the fishes survival or the fishes death.
• Controlled variables are kept constant. Some variables might influence the results, so they need to remain constant to cause no effect on the dependent variable response. They need to be controlled. Controlled variables do not influence the results.
In the exposed example, the controlled variable is the fishes species, the size of the jar, and other environmental conditions such as food, light exposure, water oxygen saturation, pH, temperature, etcetera.
Knowing this, we can answer the questions.
Q1. Why did Mr. Edison buy the same kind of fish as those that had died? *
A1. To make sure that his fish would have the same response behavior as the fish that died.
The kind of fish is a controlled variable. To perform the experiment properly he needs to use the same species because another species might behave differently to the ice cubes presence.
Q2. Why did he keep the fish in the aquarium he bought for two days before started his investigation?
A2. To ascertain that they can survive in their new environment.
Probably the conditions in the aquarium were different from the conditions in Edison's house. So before performing the experiment, he needed to be sure that the animals got to adapt to their new environmental conditions -which are also controlled variables-. In this way, he could be sure that the switch of the environment -from the aquarium to his house- did not influence the fishes' response to ice.
Q3. Why did he use identical jars in his investigation?
A3. It was necessary for all conditions to be identical except one: the experimental variable.
Jars size are also a controlled variable. Different sizes would mean different amounts of water, space, etcetera. He needed to ensure that these variables were kept the same and had the same influence on fish. Otherwise, they could be influencing the animals' survival.
Q4. Why did he put ice cubes in Jar No. 1?
A4. To find out if there would be a difference in the behavior of the fish in the two jars.
The presence/absence of ice cubes was the treatment, the independent variable. He needed to know if fishes died because of the ice cubes, so he compared how animals behave in the presence and the absence of ice cubes. To make a proper comparison, he exposed all the animals to the same environmental conditions excepting for the ice cubes exposition. He put ice on only one jar and observed the survival of animals in both jars.
Q5. What did Edison want to find out from this experiment?
A5. The reason for the death of fishes in the aquarium
He wanted to know if his fished died because of the ice cubes or if there was any other reason that provoked their death. If ice was not the cause of death, then animals in both jars should have survived. If ice was the cause of death, then only the animals in Jar number 1 should die.
By defining the variables involved in the experiment, Mr. Edison could perform a simple experiment and got to know if ice cubes caused the fishes' death.
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Answer:
the answer is D. All of the above
Explanation:
i dont got the energy too sorry, the other questions in this section will help explain why its all the above
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Answers
Stirring rod is used to mix combinations of materials and to assist in the pouring of liquids.
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A.Hippocampus
B.Medulla oblongata
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Answers
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Which feature is unique to a euglena when it is compared to most protists?
Answers
Answer:
he could imagine that new features capitalizing
Answer:
Euglena is a genus of single cell flagellate eukaryotes. It is the best known and most widely studied member of the class Euglenoidea, a diverse group containing some 54 genera and at least 800 species. Species of Euglena are found in freshwater and salt water. They are often abundant in quiet inland waters where they may bloom in numbers sufficient to color
Explanation:
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Answers
Every planet in our solar system has been visited by an unmaned spacecraft sent by the United States. The launch years are given in this order
Venus (1962)Mars (1964)Mercury (1973)Jupiter (1977)Saturn (1977)Uranus (1977)Neptune (1977)Pluto (2006)Answer:c some
Explanation:
only a couple of planets have had unmanned spacecraft sent to them
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Upon detecting epinephrine, the liver cells, also known as hepatocytes, respond by rapidly breaking down glycogen, a stored form of glucose, through a process called glycogenolysis.
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When a piece of iron of mass is 78 gram is put in a graduated cylinder containing 100cm³ of water, the reading of the cylinder become 110³ cm calcute the denisty of the piece of iron
Answers
Which best describes thermal energy?
It is the difference between internal energies of two or more substances.
It is the sum of internal energies of two or more substances.
It is the portion of internal energy that can be transferred from one substance to another.
It is the portion of potential energy that can be transferred from one substance to another.
Answers
Answer:
It is the portion of internal energy that can be transferred from one substance to another
Answer:
C.) It is the portion of internal energy that can be transferred from one substance to another.
Explanation:
E D G E N U I T Y
thermal energy: the part of total internal energy that can be transferred
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Answers
Answer:
In single-celled organisms, materials are stored primarily in. ribosomes.
Mistletoe is a plant that lives on the branches of trees. The mistletoe plant sends its roots in through the bark of trees and takes away water and minerals that the tree needs.
Explanation:
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The difference between BSL-1 and BSL-2 is the potential risk level of the microorganisms being handled, which requires increased precautions and training to ensure the safety of laboratory workers and the surrounding environment.
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BSL-2 requires more stringent practices due to the potential for handling infectious agents that pose a moderate risk to laboratory workers and the environment. These practices include the use of BSL-2 certified equipment, proper containment, and decontamination procedures, and additional training in handling infectious agents.
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Strong "driving forces" help to hasten thermodynamic processes that reduce free energy when there is a high surface area to volume ratio.
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A researcher collected a single-celled organism from birdbath water and grew the organism in a laboratory. The researcher observed the organism reproducing by cell division, which resulted in identical offspring generations. This organism exhibits a form of
Answers
Answer: The organisms exhibit a form of Asexual reproduction.
Explanation:
This is a form of asexual reproduction because Asexual reproduction is a form of reproduction where a single celled organisms or muiticellular organisms produce or divide to produce offsprings that are genetically identical without fusion of gametes and exchange of genetic materials.
This type of reproduction includes binary fission( where an organism divides into two), fragmentation( where an organism divides into fragments), budding, spore formation e.t.c.
Los Parques Nacionales Naturales de Colombia se caracterizan porque:
1. Sus Ecosistemas no han sido alterados por la explotación y ocupación humana.
2. Son zonas delimitadas por criterios de Geografía Física: como relieve, clima, hidrografía, vegetación y suelos.
3. Allí nacen numerosos Ríos.
4. Satisfacen necesidades de la población.
Answers
Answer:
Explanation:
2. Son zonas delimitadas por criterios de Geografía Física: como relieve, clima, hidrografía, vegetación y suelos.
In a healthy person, bile enzymes are constantly being made in the liver cells. In contrast, bile enzymes are never made in stomach cells. Considering only this, we can reasonably predict that there will be more ribosomes __________ in liver cells compared to stomach cells.
Answers
Due to the constant production of bile enzymes in the liver cells but not in the stomach cells, it can be predicted that there will be a higher abundance of ribosomes in liver cells compared to stomach cells.
Ribosomes are cellular organelles responsible for protein synthesis. Since bile enzymes are constantly being produced in the liver cells, which require protein synthesis, it follows that there would be a greater need for ribosomes in these cells.
Ribosomes are the sites where proteins are assembled based on the instructions encoded in the DNA. Therefore, in order to meet the demand for bile enzyme production, liver cells would need to have a higher number of ribosomes to support the synthesis of these enzymes.
On the other hand, stomach cells do not produce bile enzymes, so there would be no requirement for as many ribosomes in these cells. The differential abundance of ribosomes between liver cells and stomach cells is directly related to their respective cellular functions and the synthesis of specific proteins.
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What the heck are freaking allergens??????
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Answer:
Allergens are weak antigens lol
I need help with this practice problem solving In your words, give a short summary to my pic
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Answer: The English settlers brought it over from England when they brought supplies to start a new life over
Explanation:
Which processes of the water cycle retum water vapor
directly to the atmosphere?
Answers
Answer: the answer is evaperation :)
The hairs on xander’s arms just started lying flat against his skin. which is most likely his internal body temperature?a. 35°c, or 95°f b. 36°c, or 96.8°f c. 37°c, or 98.6°f d. 38°c, or 100.4°f
Answers
As soon as the hairs on Xander's arms started lying flat against his skin, the most likely internal body temperature is 37°C, or 98.6°F. Therefore the correct option is option C.
Homeostasis is the mechanism by which the body maintains a stable internal environment in response to changes in external circumstances. In the human body, it is critical for optimal health that certain physiological parameters are maintained within a narrow range of values.
Temperature, blood pressure, pH, and glucose levels are just a few examples of physiological parameters that must be kept constant to ensure that body cells function properly.
This conclusion is based on the concept of thermoregulation, which is the process by which the body maintains a stable internal temperature. Therefore the correct option is option C.
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An organism's body weight is a balance between: the energy carried in the food we eat and the energy burned in digesting that food. the energy burned during growth, reproduction, and movement and the energy carried in the food we eat. the energy an organism spends on growth and the energy an organism invests in reproduction. the energy stored as lipids within the body and the energy burned during all activities. the energy carried in the food we eat and the energy burned by our basal metabolic rate.
Answers
Answer:
the energy burned during growth, reproduction, and movement and the energy carried in the food we eat.
Explanation:
A good health can be defined as the state of well-being in which all of the components of an individual's health are in balance. These state of well-being comprises of six (6) important components and they are; physical, spiritual, emotional, environmental, social and mental or intellectual. In order to have a good health, physicians and medical professionals advise individuals to engage in physical activity such as an aerobic exercise.
An aerobic exercise refers to all forms of physical activity that an individual engages in, in order to increase the heart rate (from low to high intensity) in response to the level of oxygen required by any activated or working muscle in the human body.
Some examples of aerobic exercise (cardiofitness activity) includes cycling, swimming, jogging, walking, skiing etc.
Generally, fitness experts usually advises everyone to judiciously engage in cardiofitness activities or exercises so as to improve well-being, body mass index (BMI), wellness or heart health.
Hence, the body weight of an organism is simply a balance between the energy burned during growth, reproduction, and movement and the energy carried in the food we eat.
This ultimately implies that, an organism's body weight is the difference between the energy that is taken in and the energy expended or burn throughout body activities.
During ___________, the cell grows, makes a DNA copy, and prepares to split into two cells
Answers
Answer:
Interphase
Explanation:
Which term is a process that must happen in the cell's cytoplasm
before cellular respiration?
Answers
Answer:
Glycolysis
Explanation:
Glycolysis happens in the cell's cytoplasm. The three-carbon molecules from glycolysis then enter the mitochondria. The products of glycolysis-the three-carbon molecules-enter the mitochondria and are used in cellular respiration.
Which of these describes variation within a species or population?
A population is defined as members of the same species living together in the same area and who are likely to breed with each other.
Evergreen trees have needle-like leaves
Rex rabbits can have one of 16 different colors of fur
Fish use gills to obtain oxygen from water
Answers
Answer:
Below
Explanation:
The answer is C, or Rex rabbits can have one of 16 different colors of fur
5. The center of your skeletal system is your backbone?
(1 Point)
true
False
help
Answers
Answer:
True
Explanation:
the endocrine system consists of various that create and release group of answer choices glands; hormones. neurons; neurotransmitters. glial cells; hormones. glands; acetylcholine.
Answers
The endocrine system consists of various glands that create and release hormones.
The endocrine system regulates the physiological functions of the body through the release of mediators known as hormones which are produced and secreted by the endocrine glands.
The endocrine glands are ductless specialized structures that secrete the hormones produced directly into the interstitial fluid surrounding the tissue from where it diffuses into the blood capillaries and then it reaches its target cell or organ.
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