Their results are shown in the table below.
height the ball was
dropped from (cm)
10
20
30
40
50
Jack's results
1.1
1.4
1.6
1.8
depth of crater (cm)
2.0
1.2
1.5
1.6
1.7
2.1
Aneesa's
results
0.8
1.4
1.5
1.8
2.1
(a) Use information in the table to answer the questions below.
(i)
What was the independent variable that Jack and Aneesa changed in their
investigation?
(i) The height the ball was dropped from accept ‘height’ do not accept ‘depth’ accept ‘height in cm’ ‘cm’ is insufficient. In their investigation, Jack and Aneesa manipulated these independent variables.
What in science constitutes the independent and dependent variables?The cause is the independent variable. Its value is unaffected by the variables. Effect is the dependent variable. Changes in independent variable also affect its value.
What are some illustrations of independent and dependent variables?You run an experiment to see how consuming diet soda and ordinary soda affects blood sugar levels.
The independent variable is the type of soda, either diet or regular.
The dependent variable is the blood sugar level, which varies based on the soda type.
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__act as biological catalysts allowing reactions to occur at the rate necessary
what type(s) of prokaryotic regulation fits the description? transcription occurs with high levels of the small molecule.
Positive inducible and negative repressible type(s) of prokaryotic regulation fits the description.
What regulates prokaryotic transcription?In prokaryotes, this means that the controls on transcription are straightforward activators and repressors. A quick and effective control mechanism is required. In order to alter from a default state of expression or non-expression, only one of the two regulatory mechanisms may be employed for particular genes.
Gene regulation comes in two flavors: positive and negative. Positive regulation is initiated by activators (and occasionally inducers), whereas negative regulation is initiated by repressors. An operon is bound by an activator or inducer, which either speeds up transcription or permits it to continue.
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if a living plant were moved from a freshwater aquarium to a saltwater aquarium, which of the following would occur? a-nothing. the plant would be fine in either aquarium b-the plant's cells would lose water and plasmolysis would occur c-the plant's cells would take on ions d-the plant's cells would take on water and would lyse
Answer: B
Explanation: The plant's cells would lose water and plasmolysis would occur
If a living plant were moved from a freshwater aquarium to a saltwater aquarium, the plant's cells would lose water and plasmolysis would occur. The correct option is b.
What fresh water and salt water?While saltwater is water found in oceans and seas, freshwater is naturally occurring water that has a low percentage of salts and other dissolved particles. Because it contains more salt than freshwater, saltwater is denser.
When it rains, freshwater dilutes the surface salt water, making it less salty. When freshwater flows across land, saltwater is created. When water flows over rocks, the minerals are eroded and combined with the water, which eventually makes its way into the oceans.
Therefore, the correct option is b- the plant's cells would lose water and plasmolysis would occur.
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when using the steps of the scientific method, which step would you use immediately after the development of a hypothesis?
What are the components of the Earth System and explain and/or give an example of how they interact with each other.
Answer: These subsystems are interconnected by processes and cycles, which, over time, intermittently store, transform and/or transfer matter and energy throughout the whole Earth system in ways that are governed by the laws of conservation of matter and energy
Explanation:the explanatain is in the answer
where does the spinal cord arise from the medulla oblongata? multiple choice question. at the medullary cone at the foramen magnum at the cervical enlargement
The spinal cord starts in the medulla oblongata, which is located at the base of the brain stem, & ends in the lower spine, where it tapers to create a cone known as the conus medullaris.
The medulla oblongata, which is the lowest part of the brain stem, is where the spinal cord begins. The conus medullaris, which is the spinal cord's terminal between L1 and L2, is located between the foramen magnum of a occipital bone and L1. The vertebrae surround and protect the spinal cord, which is housed inside the vertebral canal. The spinal cord starts in the medulla oblongata, which is located at the base of the brain stem, & ends in the lower spine, where it tapers to create a cone known as the conus medullaris.The protective three-layer meninges that surround the spinal cord are made of connective tissue. Although they come from the spinal cord, spinal nerves are a component of the peripheral nervous system. The majority of spinal nerves were mixed, carrying both motor efferent axons and sensory afferent fibers.
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why agricultural plants are more affected then natural growth plants
Answer:
One reason is that agricultural plants are often grown in large quantities and are often monoculture crops, meaning that they are all the same species. This can make them more susceptible to pests and diseases, as these organisms can quickly spread through a monoculture crop and cause significant damage. Natural growth plants, on the other hand, are often more diverse and may not be as vulnerable to these types of problems.
For each of the following situations, predict
whether the Hardy-Weinberg equilibrium
would be maintained after several generations.
Explain your reasoning.
(a) A population of long-tailed widow birds is
maintained at a local zoo.
(b) A population of birds lives on an isolated
island.
(c) Climate change is melting the polar ice
where polar bears live.
(d) A rat population lives in the subway system
in Toronto.
Hardy-Weinberg equilibrium is an important principal of population genetics. The frequency of genotype in a population remains constant in a large population if no disturbance occurs.
What is Hardy-Weinberg Equilibrium?
The Hardy-Weinberg Equilibrium is an important fundamental principal of the population genetics. This principal states that the genotype frequencies in a population remain constant between generations in the absence of any disturbance by outside factors.
A population of the long-tailed widow birds is maintained at a local zoo. The Hardy-Weinberg equilibrium would be maintained after several generations if they receive proper care and management at the zoo and no disturbance.
A population of birds which lives on an isolated island, the Hardy-Weinberg equilibrium would be maintained in the population after several generations due to the non-disturbed environment and no human interference.
Climate change such as melting of the polar ice where the polar bears live, the Hardy-Weinberg equilibrium would be maintained after several generations if the melting of polar ice can be recovered or the polar bears go to the suitable place which is favorable for the growth and survival of the species.
A rat population who lives in the subway system in Toronto, the Hardy-Weinberg equilibrium would be maintained after several generations if the rat population gained less predator and more food and resources.
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The reaction A --> B + C + heat is released in a(n) _____ reaction. A. dehydration synthesis B. exchange C. endergonic D. anabolic E. exergonic
The reaction A --> B + C + heat is released in an exergonic (energy has been released).
An exergonic reaction is indeed a chemical reaction in which the change in limitless energy has been bad . If the system seems to be closed and the final and initial temperatures are equal, this indicates a reflex response. The Gibbs free energy is appropriate for processes that occur inside a closed system at the same pressure and temperature, while the Helmholtz energy is pertinent for processes that happen at constant temperatures and volumes.
In accordance with the second law of thermodynamics, any reaction that occurs at constant temperature with out input of electrical as well as photon energy is exergonic. Cellular respiration is an example.
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Desalinization plants are becoming more common in places which have experienced?
Option d is Correct. In areas where fresh water is scarce, desalinization facilities are becoming more prevalent.
In areas where there has been a fresh water shortage, desalination facilities are becoming more widespread. Seawater is made safe to drink through the desalination process, which takes the salt and other minerals out of it. When there aren't enough freshwater supplies or the freshwater that is available is of poor quality, it is frequently used in coastal locations.
By delivering a consistent supply of pristine, pure water, desalination facilities can help with water shortages. The release of brine, a highly salted byproduct, into the ocean is one example of how they may have an adverse effect on the environment and are costly to build and run.
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Correct Question:
Desalination plants are becoming more common in places which have experienced ____
a. an influx of refugees
b. damaging earthquakes
c. mass deforestation
d. shortages of fresh water
Part 1: Investigating the Responses of Pill Bugs to Moisture (8 points) In this part of the lab, you will explore the responses of pill bugs to moist and dry environments. You will begin by preparing a habitat for pill bugs and a choice chamber for an experiment. A choice chamber provides an organism with two distinct environmental conditions. You will place a moist paper towel on one side of the chamber and a dry paper towel on the other side. You will place the pill bugs in the middle and count the number that have moved to each side after a certain amount of time.
1. Identify the variables for the experiment. (4 points)
Independent variable:
Dependent variable:
Controlled variables:
(Apex)
The dependent variable here is Pill Bug, independent is moisture and choice of membrane controlled variable.
What is a variable?Any qualities, quantity, or number that can be gauged or tallied qualifies as a variable. A data item is another name for a variable.
Examples of variables include age, gender, company income and expenses, country of birth, capital expenditures, class grades, eye colour, and vehicle kind.
Variables can have a wide range of values, which is why they are called variables. Thus, a variable can be thought of as a quantity that can take on different values depending on the circumstances of a given issue.
Pill Bug is the dependent variable in the experiment at hand, while controlled variables for moisture and membrane selection are independent variables.
Thus, these are the variable in the given investigation.
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rna polymerase from e. coli (core enzyme alone) has all of the following properties except that it:
RNA polymerase from e. coli (core enzyme alone) has all of the following properties except that it: recognizes specific start signals in DNA.
'What is RNA polymerase?'
In bacteria, all kinds of RNA transcription are catalyzed by a single DNA-dependent RNA polymerase. The promoter is bound to by RNA polymerase, which starts transcription (Initiation). It uses nucleoside triphosphates as its substrate and polymerizes using a template in accordance with the complementarity principle. Along with facilitating elongation, it also helps the helix open. Only a small portion of the RNA is still attached to the enzyme. The nascent RNA fall off as well as the RNA polymerase once the polymerases reaches the terminator region. As a result, transcribing is stopped. Only the elongation phase can be catalyzed by the RNA polymerase. To start and stop transcription, respectively, it briefly connects with initiation-factor and termination-factor.
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typically, where is the single-pole wall switch that controls a continuous feed food waste disposer located?
Above the countertop the single-pole wall switch that controls a continuous feed food waste disposer located.
Garbage disposals are fantastic devices that turn food scraps into pulp, making it easy to dispose of food waste in residential kitchens. The best garbage disposal switch options are contrasted here. Special switches are used to turn on garbage disposals. The air switch, wireless switch, wall switch, and toe kick switch are the four most common types of garbage disposal switches. If a garbage disposal is a batch feed model, it can also be wired directly to the mains. The easiest and safest way to turn on a garbage disposal is with an air switch. It is a pneumatic switch, which means there are no electrical wires connecting it to the mains. It is often mounted on the counter just over the sink. The switch is safe to use even when wet because there are no direct electrical connections. Additionally, it has a nice appearance and is simple to use.
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when the ............ membrane moves, the ...... on the spiral organ hair cells distort because they are anchored by the tectorial membrane.
When the basilar membrane moves, the stereocilia on the spiral organ hair cells distort because they are anchored by the tectorial membrane.
What are spiral organ ?The spiral organ is also called the organ of Corti which is defined as the receptor organ for hearing, located in the cochlea of the ear.
The spiral organ is made up of hair cells which are sensory epithelial cells that act as the sensory receptor of the inner ear.
During the transport of sound from the ear drum, the movement of the basilar membrane lead to the change in the spiral hair cells because they are anchored by the tectorial membrane.
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most animals a. are vertebrates. b. are invertebrates. c. lack symmetry. d. are radially symmetrical. e. belong to the chordate group.
Answer:
A
Explanation:
this is my guess personally
What did Mohorovicic discover by looking at seismic activity?
A)The earth is made of one density throughout it's interior.
B)The earth is made up of different densities at different layers.
C)S waves and P waves travel at the same speed within the Earth.
D)Earthquake waves cannot travel though the interior of the Earth
Mohorovicic find Seismic activity may be used to determine that S waves that P waves move through the Earth at the same pace.
Describe Earth.The only planet of our sun known for supporting life is Earth, which is the closest planet to the Sun, the biggest of the system platform's four planetary systems, the densest place on the planet, and the planet with the highest density.
What exists on Earth?The elements of Earth are land, air, water, and life. Rocks, valleys, and flat places can all be on the ground. Fumes, namely nitrogen and oxygen make up the air. Rain, ice, glacier, rivers, lakes, seas, & torrents are all examples of freshwater.
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The diagram shows the electric field due to point charge Q. The negative charge, A, is within the field.
Charge Q has vectors radially outward starting perpendicular from the surface. The farther you get from the charge, the shorter the vectors. All vectors point towards the charge. A point labeled A is just to the right of the charged object.
Which statements are correct? Check all that apply.
Charge Q is positive.
Charge Q is negative.
The electric field is uniform.
The electric field is nonuniform.
If charge A is negative, it moves away from charge Q.
If charge A is positive, it moves away from charge Q.
The electric field due to point charge Q is nonuniform. If charge A is negative, it moves away from charge Q. These statements are correct, based on the information provided in the diagram.
In the diagram, the electric field lines radiate outwards from charge Q in all directions, indicating that the electric field is nonuniform. The electric field lines are denser near the charged object and become less dense as they move away from it, indicating that the strength of the electric field decreases with distance from the charge. This means that the electric field is nonuniform, as the strength of the field varies depending on the distance from the charge.
In addition, the electric field lines are directed radially outward from the charge, indicating that the electric field is repulsive. This means that if charge A is negative, it will be repelled by the electric field and will move away from charge Q. However, if charge A is positive, it will be attracted to charge Q and will move towards it.
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cell products or wastes are released to the surrondings through the process of endocytosis true or false
Endocytosis is an important process involved in the uptake of essential molecules and particles into the cell, as well as the excretion of waste products out of the cell. Therefore, it is true that cell products or wastes can be released to the surroundings through the process of endocytosis.
Endocytosis is a process that occurs in all cells, in which substances enter the cell from the outside environment. It is a vital part of the cell’s metabolism and helps it to take up essential nutrients, expel wastes, and maintain a healthy balance between the inside and outside of the cell. The answer to the question, “Are cell products or wastes released to the surroundings through the process of endocytosis?” is yes, they are.
Endocytosis is a process by which a cell takes up material from the outside environment and transports it inside the cell. It involves the formation of small vesicles, which are created by the cell’s membrane folding inwards and surrounding a molecule or particle. The vesicle is then transported across the cell membrane, where it is broken down and the contents are released into the cell’s interior. This process is important for cells to take in nutrients and material necessary for their survival, as well as for the excretion of waste products.
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deterioration of the ossicle bones can cause this type of hearing impairment: a) sensory neural b) ventral neural c) conduction d) none of the above
Deterioration of the ossicle bones can cause of Conduction Hearing Impairment .
When the cochlea, the hearing organ in the inner ear, is not receiving sound energy properly, conductive hearing loss develops. Blockage of the ear canal, a hole in the ear drum, issues with the three tiny bones in the ear, or fluid in the area between the ear drum and the cochlea are common causes of conductive hearing loss. Fortunately, conductive hearing loss is usually treatable.
Conduction hearing loss symptoms can include or be related to any of the following, depending on the precise cause and degree (see below):
distorted hearing , hearing loss that is sudden or gradual, feeling of "stuffiness" or fullness in the ear, Dizziness, the ear being drained, An earache or discomfort
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Biofeedback can be used to control all of the following except __________. a. heart rate b. muscle growth c. brain waves d. skin temperature
Answer:
B muscle growth
Explanation:
Biofeedback is a technique you can use to learn to control some of your body's functions, such as your heart rate. During biofeedback, you're connected to electrical sensors that help you receive information about your body.
Select the correct answer.
Henry was having glass of water with some ice cubes in it and kept it near a window for some time. After some time, the water became warm. What is
this process called?
A.
condensation
B. freezing
c. melting
D. sublimation
E. evaporation
Answer: C
Explanation: Melting is a process when a solid becomes a liquid. (The solid being the ice cubes)
epithelial tissues always exhibit polarity; that is, they have a free surface and a basal surface. t or f
True, the epithelial tissues always exhibit polarity that is they have a free surface and a basal surface.
Tissues are corporations of cells that have a similar shape and act collectively to perform a selected function. The phrase tissue comes from a form of an old French verb that means “to weave”. There are 4 one-of-a-kind sorts of tissues in animals: connective, muscle, nervous, and epithelial.
In easy terms, tissue may be defined as a collection of cells with comparable forms and features termed as tissues. They shape a cellular organizational level, intermediate between the cells and the organ machine.
They constitute a stage of enterprise and cell differentiation in residing organisms. Tissues perform various capabilities including transportation, digestion, respiration, and so forth.
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what is earliest event in the process of early development? a. implantation b. gastrulation c. formation of the placenta d. cleavage
Earliest event in the process of early development is Cleavage.
Fertilization marks the beginning of the embryonic developmental process. In order to ensure that only one sperm and one egg fuse together during fertilization, the process is carefully regulated. The zygote undergoes cleavage to form blastula.
The blastula goes through a process called gastrulation in which the three germ layers are formed. In some species, the blastula is a hollow ball of cells. The body's nervous system and epidermal skin cells are produced by the ectoderm, whereas muscle cells and connective tissue are produced by the mesoderm and interior organs are produced by the endoderm.
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the parasympathetic division innervates more organs than the sympathetic division..
Answer:The sympathetic division innervates more organs than the
parasympathetic division.
Explanation:
__________ is the process through which high energy UV radiation breaks down atmospheric water and nitrite into component atoms.
A)
Transpiration
B)
Evapotranspiration
C)
Sublimation
D)
Photolysis
E)
Evaporation
Please select the best answer from the choices provided
A
B
C
D
E
Answer:
D. Photolyisis
is the best answer.
FILL IN THE BLANK. meiotic cell division in animals occurs in the ________ and results in the production of ________.
Meiotic cell division in animals occurs in the testes and ovaries and results in the production of gametes.
Meiosis is the type of cell division where the number of chromosomes become half to that of the parent cell. This is why it is also known by the name reductional division. The meiotic cell division can only be seen in the germ cells of the body.
Gametes are the reproductive cells that give rise to a new individual upon fusion. The male gamete is called the sperm while the female gamete is called ovum or egg. These gametes are haploid in nature i.e., consists of only one set of chromosomes.
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contains the pigment, or eye color, and has a "hole" in the center called the pupil
in both eukaryotes and prokaryotes, gene expression is primarily regulated at the level of
Answer:
Gene expression in prokaryotes is mostly regulated at the transcriptional level (some epigenetic and post-translational regulation is also present), whereas in eukaryotic cells, gene expression is regulated at the epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels.
the extraordinary movement of peoples, plants, animals, goods, cultures, and diseases in the sixteenth century is called the?
The Columbian Exchange, which occurred in the sixteenth century, was characterized by enormous mobility of people, goods, plants, animals, cultures, and illnesses.
What traits distinguished sixteenth-century Europe?An active phase of economic expansion occurred during the 16th century. The numerous social, political, and cultural changes that occurred during the early modern era were greatly influenced by this expansion. After two centuries of decline or stagnation, most of Europe's populations were growing by the year 1500.
Which social classes in Europe profited most from the pricing revolution?1.4. 2. B: The pricing revolution helped great landowners in western Europe by commercializing agriculture, which led to the accumulation of capital and the growth of the market economy.
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