A dog trainer gives a dog a treat every third time the dog sits after the trainer says "sit." What BEST describes the schedule of reinforcement under which the trainer is controlling the dog's behavior? a. Fixed ratio b. Variable interval c. Variable ratio d. Fixed interval
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Answer:
a. Fixed ratio!.......
Related Questions
Why do gram negative bacteria lose the primary stain during decolorization with ethanol?.
Answers
Answer:
Conversely, the the outer membrane of Gram negative bacteria is degraded and the thinner peptidoglycan layer of Gram negative cells is unable to retain the crystal violet-iodine complex and the color is lost. ... However, the decolorized Gram negative cells are stained red.
A majority of the seed is made up of the...
a) seed coat
b) testa
c) endosperm
d) radicle
Answers
Answer:
Your answer is C) endosperm.
Which will increase the rate of a chemical reaction?
SE38
adding a positive catalyst
decreasing the pressure
decreasing the temperature
adding a negative catalyst
Answers
Answer:
The answer is option 1.
Explanation:
Adding catalyst will increase(speed up) the rate of reaction.
Rate of reaction increase :
temperature increases
pressure increases
adding enzyme(catalyst)
will somebody please help me brainliest i will give
Answers
Answer:
heterozygous
Explanation:
the answer is C
Let 2.4×10-4 J of work is done to increase the area of a film of soap bubble from 50 cm2 to 100 cm2. Calculate the value of surface tension of soap solution.
*
2.4E-4 N/m
2.4E-6 N/m
2.4E-2 N/m
Answers
The surface tension of soap solution is 2.4E-2 N/m.
Work done in increasing the area of a soap bubble from 50 cm2 to 100 cm2 is 2.4×10-4 J. The formula for surface tension can be written as work done per unit area that is,T = W/AWhere,T is the surface tension,W is the work doneA is the area of the soap bubbleInitially, the area of the soap bubble was 50 cm² and then increased to 100 cm². Therefore, the change in area (dA) is given as:dA = (100 - 50) cm² = 50 cm² = 5 x 10^(-3) m²Also, the work done (W) is 2.4 x 10^(-4) J. Thus, the surface tension (T) of soap solution can be calculated as:T = W/dA= 2.4 x 10^(-4) J / 5 x 10^(-3) m²= 2.4 x 10^(-4) J x 2 x 10^2 m² / 5 J= 2.4 x 2 x 10^(-2) N/m= 4.8 x 10^(-2) N/m≈ 2.4 x 10^(-2) N/mTherefore, the surface tension of soap solution is 2.4E-2 N/m.
The phenomenon that occurs when the surface of a liquid comes into contact with another phase—which can also be a liquid—is referred to as surface tension, according to the definition of the term. Fluids will more often than not secure the most un-surface region conceivable. The outer layer of the fluid acts like a flexible sheet.
"Surface strain is the pressure of the surface film of a fluid brought about by the fascination of the particles in the surface layer by the heft of the fluid, which will in general limit surface region".
Surface tension is influenced not only by the forces of attraction between the liquid's particles but also by the forces of attraction between the liquid and any solid, liquid, or gas that comes into contact with it. The amount of work or energy required to remove a unit area's surface layer of molecules is roughly equivalent to the energy that causes the phenomenon of surface tension.
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You will be researching a virus that infects humans, animals, or plants. If you are into history you may pull a virus that has occurred (like one of the flu pandemics) To share your research you will be creating a digital poster. You may use any type of poster program you like as long as it can be shared! You may also use google slides. I will provide a template for google slides (link will be here) if you need help getting started! To get full credit, your poster must include the following: At least 8 of these 10 items Name of virus Time span (is it currently out there infecting things? Is this from the past?) What it infects How does it spread? What are the symptoms? How dangerous is it? At least one relevant image (with a citation if you did not create the image) A description/caption for the image explaining the relevance How does it reproduce? (lytic or lysogenic) What are its viral relatives? Did it evolve from another known virus? AND A list of references all while using academic grammar and spelling! Post a link to your poster or upload your poster here in the Discussion Board. This discussion board will not be much of a discussion - it will be more of a sharing of work!
Answers
Answer:
yes
Explanation:
In some individuals, the thyroid does not produce enough hormone, so these individuals may take a replacement hormone, such as thyroxone. The concentration C(t) of thyroxone (in micrograms) in the person's body decays exponentially with a half-life of about seven days. Consider an individual who has taken 120 mcg of thyroxone. a) (1 point) Which of the following is true for the concentration of the drug in the individual's body? After 14 days, none of the hormone remains After 14 days, 30 mcg remains O After 14 days, 119 mcg remains O After 14 days, 106 mcg remains 0.099t > b) (3 points) The thyroxone concentration (in mcg) can be modeled by C(t) 120e where t is the time in days after the individual has taken the drug. When will the concentration be 12 mcg? Round your answer to the nearest day.
Answers
The following is true for the concentration of the thyroid drug in the individual's body is after 14 days 30 mcg remains, option B and the time when the concentration be 12 mcg is t = 23.23 sec.
The thyroid, or thyroid organ, is an endocrine organ in vertebrates. In people, it is in the neck and comprises of two associated curves. A thin band of tissue known as the isthmus connects the lower two-thirds of the lobes. The thyroid gland is a butterfly-shaped organ beneath the Adam's apple in the neck. The spherical thyroid follicle, which is lined with follicular cells (thyrocytes) and occasionally parafollicular cells and has a colloid-filled lumen, is the thyroid gland's functional unit at a microscopic level.
Three hormones are released by the thyroid gland: the two thyroid chemicals - triiodothyronine (T3) and thyroxine (T4) - and a peptide chemical, calcitonin. The metabolic rate, protein synthesis, and growth and development of children are all influenced by thyroid hormones. Calcium homeostasis is affected by calcitonin. The anterior pituitary gland secretes thyroid-stimulating hormone (TSH), which controls the two thyroid hormones. The hypothalamus makes thyrotropin-releasing hormone (TRH), which controls TSH.
C(t) = 120\(e^{-0.099t\)
So at 12cmg
12 = 120\(e^{-0.099t\)
1 = 10\(e^{-0.099t\)
1/10= \(e^{-0.099t\)
log1/10 = -0.099t
-2.3 = -0.099t
t = 2.3/0.099
t = 23.23 sec.
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a biologist took a count of the number of fish in a particular lake
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A biologist conducted a count of the number of fish in a particular lake. By employing these or other appropriate methodologies, the biologist aimed to obtain an accurate count or estimate of the fish population in the lake.
To determine the fish population in the lake, the biologist likely employed various methods such as:
Sampling: The biologist may have sampled a portion of the lake, either by using nets or other fishing techniques, to capture a representative subset of the fish population. This sample is then used to estimate the overall population size.Mark and Recapture: In this method, a portion of the fish population is captured, marked (e.g., by tagging or marking with dye), and then released back into the lake. After a sufficient period of time, another sample is taken, and the proportion of marked fish in the second sample helps estimate the total population size.Underwater Surveys: The biologist may have used underwater observation techniques such as snorkeling, scuba diving, or remotely operated vehicles (ROVs) equipped with cameras to visually estimate fish abundance and diversity.Acoustic Surveys: Using specialized equipment like fish finders or hydroacoustic devices, the biologist can send out sound waves that bounce off fish and other objects in the water, allowing for the estimation of fish density and distribution.It's important to note that fish populations can be dynamic and subject to seasonal variations, migration patterns, and other ecological factors, so periodic assessments may be necessary to monitor changes over time.
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Johanna was overfed as a baby.What form of obesity is she likely to develop?A) glandularB) hypertrophicC) hypercellularD) hyperthermic
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If Johanna was overfed as a baby, she is more likely to develop hypercellular obesity.
This form of obesity occurs when there is an excessive accumulation of fat cells in the body as she was overfed. In contrast, glandular obesity is caused by hormonal imbalances, hypertrophic obesity is due to an increase in the size of the fat cells, and hyperthermic obesity is caused by a dysfunction in the body's thermoregulatory system. It is important to note that obesity can have serious health consequences and should be addressed with proper diet and exercise. Additionally, it is recommended to consult with a healthcare professional for personalized advice and guidance. It is essential to maintain a healthy diet and lifestyle to prevent or manage obesity-related issues.
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food, water, shelter, and warmth represent ________ needs in maslow’s hierarchy of needs.
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Food, water, shelter, and warmth represent physiological needs in Maslow’s hierarchy of needs.
Abraham Maslow proposed and developed a theory in human development psychology titled "A theory of human motivation" in 1943.
Maslow's Hierarchy of Needs can be defined as a pyramid model which typically represents the fundamental (basic) needs of an individual, that are essential and required to be met before he or she can achieve complete growth, development and self-actualization.
The five (5) levels of Maslow's Hierarchy of Needs in a chronological order are;
Physiological.Safety.Belonging and love.Social needs or esteem.Self-actualization.According to Abraham Maslow the psychological needs comprises:
I. Food.
II. Water.
III. Shelter.
IV. Warmth.
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1. Negative feedback is bad for your body. True or false 2. Both negative and positive feedback works in a loop. True or false. 3. Feedback loops are open systems of information. 4. There are feedback systems found in the environment and mechanical systems.
Answers
Answer:
1. False
2. True
3. True
4. True
Explanation:
Negative feedback (or balancing feedback) happens when some capacity of the yield of a framework, cycle, or system is taken care of in a way that will in general decrease the variances in the yield, regardless of whether brought about by changes in the input or by different unsettling influences.
Though certain feedback will in general prompt unsteadiness through outstanding development, wavering or disorganized conduct, negative feedback for the most part advances steadiness. Negative feedback will in general elevate a settling to balance, and diminishes the impacts of bothers. Negative feedback loops in which the perfect measure of adjustment is applied with ideal planning can be entirely steady, exact, and responsive.
what term best characterizes the type of mutation exhibited by the mutant bacterial strain?
Answers
The term that best characterizes the type of mutation exhibited by the mutant bacterial strain is "point mutation." A point mutation is a genetic alteration that occurs at a single nucleotide base pair in the DNA sequence.
This type of mutation can result from various factors, such as errors during DNA replication or exposure to mutagens like radiation and chemicals.
Point mutations are categorized into three main types: silent, missense, and nonsense mutations. Silent mutations do not affect the amino acid sequence of the resulting protein, as they result in the same amino acid being produced. Missense mutations, on the other hand, cause a change in a single amino acid, which can potentially affect the protein's function. Lastly, nonsense mutations result in a premature stop codon, leading to a truncated protein that may be nonfunctional or unstable.
In a bacterial strain, point mutations can have different effects on the organism's overall fitness and survival. Some mutations might be beneficial, allowing the bacteria to adapt to new environmental conditions or develop resistance to antibiotics. Others could be detrimental, impairing essential cellular processes or protein functions. In some cases, the mutation may be neutral, having no significant impact on the organism's overall fitness.
In conclusion, the term "point mutation" best describes the type of mutation exhibited by the mutant bacterial strain. These mutations occur at a single nucleotide base pair and can have various consequences, ranging from beneficial to detrimental effects on the bacteria's fitness and survival.
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bacteria most commonly reproduce using which method?
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Bacteria most commonly reproduce using binary fission. In binary fission, a single cell divides into two identical daughter cells. These daughter cells are genetically identical to the parent cell, and the process of division can occur rapidly with some bacteria dividing every 20 minutes or less.
Hence, we can say that bacteria most commonly reproduce using binary fission, which is a rapid form of asexual reproduction.Bacteria can also reproduce sexually under certain conditions by transformation, transduction, and conjugation. The exchange of genetic material during sexual reproduction increases genetic diversity, which can be advantageous for adaptation to changing environmental conditions.
However, sexual reproduction is less common than asexual reproduction among bacteria as it is a slower process that requires specific conditions to occur. Therefore, bacteria mainly use asexual reproduction, which is a much faster method of reproduction. Binary fission is an efficient and rapid way for bacteria to produce large numbers of offspring, allowing them to colonize new environments and outcompete other microorganisms. The ability to rapidly adapt to changing environmental conditions through reproduction is one of the reasons why bacteria have been so successful as a group of microorganisms.
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Humid air contains a large amount of water
kapour thich makes it more difficult for water
particles to evaporate from a dish of water. Will humid
Conditions speed up on slow down the rate at transpiration
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Answer:
Transpiration decreases
Explanation:
what is reproductive isolation? describe two mechanisms that decrease gene flow, making speciation more likely.
Answers
Reproductive isolation is a set of mechanisms or barriers that prevent or reduce successful reproduction between individuals of different species or populations, which contributes to speciation and the formation of new species.
There are several mechanisms of reproductive isolation, but here I will describe two of them:
A) Prezygotic reproductive isolation: these mechanisms act before fertilization and prevent gametes from different species or populations from meeting or merging. Some examples are:
Geographic isolation: occurs when populations are physically separated by geographic barriers, such as mountains, oceans or deserts, which prevents gene flow between them.Ecological isolation: Occurs when species or populations occupy different ecological niches or habitats, limiting encounter and reproduction between them. For example, they may have different food preferences or require different environmental conditions.B) Post-zygotic reproductive isolation: These mechanisms act after fertilization and reduce the viability or fertility of hybrids between species or populations. Some examples are:
Hybrid unviability: Hybrids resulting from crossbreeding between species or populations have lower survival or are not viable, limiting their ability to reproduce.Hybrid sterility: Hybrids are fertile, but are unable to reproduce successfully with individuals of the parent species or have reduced fertility. This limits gene flow between species.Learn more about reproductive isolation at https://brainly.com/question/17749659
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at a recent math seminar, 9 mathematicians greeted each other by shaking hands. which of the following scenarios is a mathematical impossibility?
Answers
Answer: Each person greeted exactly 7 people.
Explanation:
cell break down glucose in order to produce what
Answers
Answer:
cell break down glucose in order to produce Energy in form of ATP (adenosine triphosphate)
Explanation:
Cells break down glucose in a process called cellular respiration in order to produce energy in the form of ATP (adenosine triphosphate).
Cellular respiration is a metabolic process that takes place in the mitochondria of cells and involves several steps, includes oxidative phosphorylation, glycolysis, the citric acid cycle.
In glucose is converted into two molecules of pyruvate, which then enter the citric acid cycle to be further broken down into carbon dioxide and water, releasing energy in the process. The energy from the citric acid cycle is then used to produce ATP through oxidative phosphorylation.
If genetic researchers found a way to change a person’s genes, would they be able to cure hemophilia? Why or why not?
Answers
Answer:
It is possible that genetic researchers may be able to develop a way to change a person's genes to cure hemophilia. Hemophilia is a genetic disorder caused by a mutation in the gene responsible for producing clotting factors. If researchers could find a way to replace or repair the mutated gene, it is possible that a cure for hemophilia could be developed. However, due to the complexity of the genetic code, this is still a long way off and may require further research and development.
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how do the four tissues support the function of the heart
Answers
The heart is made up of four different types of tissues. The four tissues that support the function of the heart are as follows:
1. Epithelial Tissue
2. Muscle Tissue
3. Nervous Tissue
4. Connective Tissue
The Epithelial Tissue forms the lining of the blood vessels and the inner surface of the heart valves. This lining helps to reduce friction and increase blood flow.
The Muscle Tissue is responsible for contracting and relaxing the heart muscle, which pumps blood through the body. The Nervous Tissue coordinates the beating of the heart and helps to regulate its function. The Connective Tissue provides structural support and helps to hold the heart in place.
The tissues in the heart work together to ensure that blood is pumped efficiently through the body. The epithelial tissue helps to keep the blood flowing smoothly through the heart, while the muscle tissue contracts and relaxes to pump the blood.
The nervous tissue ensures that the heart beats at the right rate and rhythm, while the connective tissue provides the structural support necessary to keep the heart in place. All four tissues work together to support the function of the heart.
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Which phrase describes one main feature of the atmosphere? protects Earth’s surface includes organisms in the air, on land, and in water consists of rocks, minerals, landforms, and Earth’s interior comprises oceans, lakes, rivers, streams, and groundwater
Answers
Answer:
A) protects earth's surface
Explanation:
took the test
The phrase describes one main feature of the atmosphere is protects Earth’s surface is correct.
Why do we need an atmosphere?Not only does it contain the oxygen we need to live, but it also protects us from harmful ultraviolet solar radiation. It creates the pressure without which liquid water couldn't exist on our planet's surface. And it warms our planet and keeps temperatures habitable for our living Earth.
Thus, protects Earth’s surface is correct.
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What are two functions of the central vacuole in a plant cells?
Answers
Central vacuole performs a very important role in plant cells like serving as a container for nutrients and waste and controls cell growth and shape.
It is a sizable, liquid-filled compartment in plant cells called as central vacuole. It has a variety of crucial functions in the biology of plant cells, including the regulation of cell development and shape as well as the storage of nutrients and waste products.
Nutrient and waste product storage is one of the central vacuole's main jobs. This can include nutrients that the plant has absorbed from the soil, such as sugars, amino acids, and minerals, as well as waste products like extra water and carbon dioxide. These compounds can be kept by the plant until they are required for growth or metabolism in the central vacuole, which functions as a sort of "storage tank" for them.
Controlling cell development and form is one of the central vacuole's key jobs. The pressure that the central vacuole puts on the cell wall as it fills with fluid might cause the cell to expand or alter shape. This is crucial for the plant's general growth and development since it enables it to respond to environmental changes and adapt to various circumstances. The central vacuole also contributes to the division of the cell into two daughter cells, which is another function of cell division.
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Which would provide evidence of the history of life from earlier geologic periods?
A. adaptation
B. decomposer
C.fossil
D.predator
NEED HELP ASAP
Answers
Answer: C. Fossil
Explanation:
Fossils are impressions of dead organisms that have formed into rock. Studying the location of the fossil allows scientists to date them and understand life in earlier geologic periods.
Dr. Henderson teaches astronomy. She used to keep a model of Mars on the edge of her desk, but one day she decided to hang it up so that her students could see it better. She used a string to tie the model to a hook in the ceiling. A few days later, the string came loose and the model fell to the ground.
When was the most gravitational potential energy stored between the model and Earth? Assume that the model's mass did not change.
A.when the model was on the edge of Dr. Henderson's desk
B.when the model was hanging from the hook
C.when the model was about to hit the ground
Answers
How do you do a Punnett square and how do you solve it?
Answers
Give an example of a decomposer and explain what would happen if a decomposer were absent from the forest ecosystem provide evidence to support your claim and explain your reasoning
Answers
Answer:
Explanation:
Fertilizer
In this diagram below , which of the stomach tissues would be muscular tissues ?
- tissue 1 : forms the outer lining of the stomach
-tissue 2 : produces enzymes which are secreted into the stomach cavity
- tissue 3 : cells in this tissue contract to churn the contents of the stomach
In a numeric number
Answers
Tissue 1 which forms the outer lining of the stomach would be the muscular tissues.
What is Muscularis mucosa?
This is referred to as the outermost layer of the mucosa and comprises of elastic fibers and smooth muscle cells.
The muscular tissue is therefore tissue 1 as a result of its location and function in the body.
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_____ is the percentage of energy used to perform work.
Answers
Answer:
Energy efficiency is the percentage of energy used to perform work
Photosynthesis is the process by which plants
A. Turn CO2 into sugars B. Release CO2 to the atmosphere C. Turn sugars into CO2 D. All of the above
Answers
Answer:
D
Explanation:
Answer:
d. all of the above
Explanation:
ur welcome.
during action potential, positively charged ________ ions move inside the cell.
Answers
Sodium ions move inside the side during action potential.
This stage of action potential is called depolarization.This open voltage gated sodium channel.What is action potential?
- Action potentials (those electrical impulses that send signals around body) are nothing more than a temporary shift (from negative to positive) in the neuron's membrane potential caused by ions suddenly flowing in and out of the neuron.
- It consists of phases:
depolarization overshootrepolarization.- An action potential propagates along the cell membrane of an axon until it reaches the terminal button.
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a. Design a meal that uses four different types of plant foods, two different types
of animal foods, and one food that relies on fungi, algae, or bacteria. How does
the management of natural resources determine whether your meal will be
available? (1 point)
b. If our forest supplies are used up faster than they are replenished, what
products could be missing or hard to get in our society? (1 point)
c. There are many materials humans use that are produced from plant or animal
material. List at least three examples in each box. One square is provided for you.
(1.5 points)
Answers
Answer: Humans are dependent on animal and plant based products for survival.
Explanation:
a. Pizza: My meal is pizza which contains the plant and animal based foods. Plant foods include vegetables like tomato, capsicum, corn, and onion. The two animal based foods used in this will be chicken meat and swine meat. The pizza dough requires yeast to attain a desire puff, yeast here is a fungal strain. The resources required for preparation of pizza are easily available as they are replenishable renewable natural resources. These are available in farm, food market, and butcher shops easily. The plant based foods will grow with the help of seeds and animal based food will be available by breeding in farms.
b. The forest reserves are rich source of renewable natural resources like wood, plant based food, medicines, and other products. If forest reserves are not replenished then the need of these products will increase due to scarcity.
c. Plant: Clothes, furniture, medicines, food, and others.
Animal: Clothes (jute, silk), tools from animal horns, decorative item from elephant ivory