Answers
Answer: Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.
Related Questions
1. These structures are enclosed compartments which are filled with water containing inorganic and organic molecules including enzymes in solution.
Answers
Answer:
Vacuoles
Explanation:
Vacuoles have enclosed compartments which are filled with water containing inorganic and organic molecules including enzymes in solution.
The sex of an organism is typically determined genetically, but environmental factors can also play a role. Scientists examined the roles of genes and environmental temperature in the sex determination of a lizard species. Individuals with a ZWpair of chromosomes are always female (ZWf), while individuals with a ZZ pair of chromosomes can be either male (ZZm) or female (ZZf). Scientists mated ZWf or ZZf females with ZZm males and incubated the eggs produced in 20 clutches at temperatures ranging from 23°C to 36°C. When the young hatched, the scientists determined their sexes (Table 1). Among the eggs that did not hatch, the mortality of embryonic lizards was approximately the same for both males and females.
(b) Using the template, construct an appropriately labeled graph, including error bars, to represent the data in Table 1. Based on the data, compare the ZZm×ZWf crosses and the ZZm×ZZf crosses to determine whether there is a significant difference between the two crosses in the fraction of female progeny produced at 24°C, 32°C, and 36°C.
Answers
Answer:
wait whaaa
Explanation:
Ribosomes, organelles that are most abundant in the cell, perform which
function?
a. transport materials throughout the cell
b. package and distribute materials
c. make proteins for all processes of life
d. clean the cell of dead and worn out parts
Answers
Answer:
C. make proteins for all processes of life
Explanation:
For example, the pancreas is responsible for creating several digestive enzymes and the cells that produce these enzymes contain many ribosomes.
Plz help me
Assuming that the muscles within both arms below are the same strength, which arm would be able to lift the most weight and why?
Arm 1. because muscles in shorter arms are stronger.
Arm 1, because muscles in shorter arms can exert more force on an object held in the hand.
Arm 2, because muscles in longer arms are stronger.
Arm 2, because muscles in longer arms can exert more force on an object held in the hand.
Answers
Answer:
khk rhfjhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
jrfjfwhf
Explanation:
Answer:
B
Explanation:
Trust me bro
Enzymes are proteins that speed up reactions by
Answers
Answer:
lowering the activation energy needed for the reaction to start
Answer:
lowering the amount of energy required
Explanation:
When jaw become large enough to hold the permanent teeth . The milk teeth fall and permanent teeth appear
Answers
The "exfoliation" or "shedding" of milk teeth is the name of the procedure.
What is the Dentition of Humans?The primary and permanent tooth sets make up the human dentition. Maxillary (upper) and Mandibular (lower) are the two opposing arches in which teeth are arranged. These can be split into their left and right halves along the midline (mid-sagittal plane).
Four Different Teeth Types and Their Purposes
The majority of individuals have 32 permanent adult teeth, which can be classified into four groups:
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An axon can alter the speed or magnitude of its action potentials
Select one
True
False
Answers
Answer:
TRUE
Size. Action potentials travel down neuronal axons in an ion cascade. ... This continues down the axon and creates the action potential. Larger diameter axons have a higher conduction velocity, which means they are able to send signals faster.
The statement that an axon can alter the speed or magnitude of its action potential is True
What is an axon?An axon is a long, slender projection of a nerve cell, or neuron, in vertebrates, that conducts electrical impulses known as action potentials away from the nerve cell.
Axon diameter, myelin sheath thickness and internode distance can all influence the speed of action potential propagation.
Therefore, an axon can alter the speed or magnitude of its action potential.
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What is the difference between learned behavior and an inherited behavior?
Answers
Answer:
Learned behavior is a trait that something learned to do, like how to read or ride a bike. Inherited behavior is instictual and naturally comes to an organism at birth, like sleeping or eating.
What is a long chain of one-ring sugar molecules?
Answers
Answer:
polysaccharide
Explanation:
Why are cells called the building blocks of an organism?
O They are visible to the naked eye.
O They are made from nonliving materials.
O They are the basic unit of life.
They are able to generate new cells.
Answers
Answer:
They are the basic unit of life
Explanation:
Everything is made of cells. Without them, all living things would not be able to function, survive, or exist. This is because cells are what separates living organisms from non-living objects.
Answer:
C
Explanation:
What would be the percentage of the non-singing trait in female birds in Generations 4 and 5 if this pattern continues?
Answers
The percentage of the non-singing trait in female birds in Generations 4 and 5 if this pattern continues will be 80 and 94
How do we know?The arithmetic progression as shown:
50, 42, 34...
We find the 4th and 5th term
The nth term of an AP is expressed as :
\(T_n = a + (n- 1)d\)
a is the first term = 50
d is the common difference = 42 - 50 = 34 - 42 = -8
For the 4th term n = 4T4 = 50 + (4-1) (- 8)
T4 = 26
For the fifth term, n = 5T5 = 50 + (5-1) (- 8)
T5 = 18
If the pattern persists, the proportion of female birds with the singing feature in Generations 4 and 5 will be 26 and 18, respectively.
We can see that the second term for the non-singing females was obtained by adding 8 to the first term. To obtain the third, 10 was added to the second.
For the 4th term, 12 will be added to the third term;
T4 = 68 + 12
T4 = 80
For the 5th term, 14 will be added to the fourth term;
T5 = 80 + 14
T5 = 94
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Complete question:
What would be the percentage of the non-singing trait in female birds in Generations 4 and 5 if this pattern continues?
Generation 1: 50 singing females/ 50 non-singing females
Generation 2: 42 singing females/ 58 non-singing females
Generation 3: 34 singing females/ 68 non-singing females
Carmen has a sample of matter. It is clear and smells sour. The sample is also thick but it flows when poured. Which is the best conclusion about Carmen’s sample? It is a liquid because it is clear. It is a liquid because it flows. It is a solid because it is thick. It is a solid because it smells sour. Carmen is a bch help pls
Answers
Answer:
Option B
Explanation:
It is a liquid because it flows.
Carmen's sample of matter is clear, smells sour, thick but flows when poured. The best conclusion about Carmen's sample is that it is liquid.
There are 3 states of matter, basically:
SolidLiquidGasesSolid substances do not move or flow in any way because their molecules are fixed.
Gaseous molecules take the shape and the volume of containers
Liquid molecules only take the shape of containers.
Liquid and gases have molecules that can move and be made to flow. However, while gases will flow out automatically from opened containers, liquids cannot, unless they are poured.
Hence, since carmen's sample of matter can only be made to flow when poured, it is safe to conclude that it is a liquid.
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Read this sentence from paragraph 3.
I wondered if I would always be just a shadow in Natalie's life until the day
I caught her sobbing in the hallway.
The author uses figurative language to reveal
A.the narrator wonders if Natalie is annoyed by her
B.the narrator feels greatly disliked by Natalie
C.the narrator follows her sister around
D the narrator feels unnoticed by Natalie
Answers
The author of the story below uses figurative language to reveal that the narrator feels unnoticed by Natalie (option D)
Figurative language deviates from the usual word order and meaning in order to convey a complex meaning, vivid writing, clarity, or an emotive comparison. By using a regular sentence, it refers to something without actually declaring it.
Figurative language, which is frequently used in both literature and everyday speech, is present in many phrases. Figurative language asks the reader or listener to consider the meaning of something (a "vehicle") in the context of other ideas, actions, or visuals (a "tenor").
Understanding figurative language is necessary to read the Management Discussion and Analysis (MD&A), where management may use a metaphor to clarify complex ideas or the direction the organization is taking.
The question is incomplete, it should be:
My sister Natalie wanted to grow up in seconds and not in years. I was left behind to catch up in real time. Only two years apart, I also felt decades away from her. Natalie wanted privacy, personal room, and mother’s pretty possessions at ten. I longed for her cuddles, which she only dispensed when she had upset me and was sorry. I loved my big sister with every ounce of my being though she felt weighed down by my displays of affection.
“When I was your age, your aunt Jen and I weren’t close,” our mother confessed. “Now, we can’t get enough of each other. Your grandparents are really old, and we share our worries and responsibilities, you know.”
I wasn’t ready to think about that—my beautiful mother being frail or my towering father using a cane. I suspected Natalie would be ahead in the care arrangements and that I would try to play catch-up. I wondered if I would always be just a shadow in Natalie’s life until the day I caught her sobbing in the hallway.
“You didn’t see anything,” Natalie said between sobs and rushed to her room, which she didn’t seal with a locked door.
Entering her neat room, which was a furniture catalog, was a privilege. The veneer of the green curtains added a layer of beauty to the windows. Except for crumbled tissues in the trashcan, nothing seemed unkempt. What had been bothering my perfect sister?
“What’s wrong?” I asked and sat on the edge of the bed to take up the smallest possible space. Then, I spotted a broken friendship bracelet by the night lamp. How could I have not noticed before? Carly hadn’t come over in months. Natalie wasn’t on the phone every free minute of Saturday and Sunday. I had been buried in books and band practice and failed to see my big sister’s loneliness. “Do you want to watch Zombie Cheer together? We don’t have to talk. We can just be…together.”
Natalie lunged at me to hold me tight and wailed until my hair was damp. I let her. Then, she dried her face with tissues and took me by the hand to the living room. Mother had already set up two big bowls of popcorn, which looked like heaps of comfort. Mother always knew everything.
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What is the name of a type of nucleic acid that is used for signalling in cells
Answers
Answer:ribonucleic acid
Explanation:
Which one is the odd man out?
leaf of a plant
horse muscle
blood
sugar
Answers
Answer:
LEAF OF A PLANT .
Explanation:
Among the given options, The odd one out is sugar. Sugar is a type of carbohydrate that is used for energy.
Leaf of a plant: A leaf is a green organ of a plant that is responsible for photosynthesis.
Horse muscle: Muscle is a type of tissue that is responsible for movement.
Blood: Blood is a fluid that circulates through the body and carries nutrients, oxygen, and waste products.
Sugar: Sugar is a type of carbohydrate that is used for energy.
Sugar is the only one of these four that is not a living organism. The other three are all living organisms: the leaf of a plant, a horse muscle, and blood.
Here is a more detailed explanation of why sugar is the odd one out:
Leaf of a plant: A leaf is a living organism because it is made up of cells that are able to carry out the basic functions of life, such as respiration, photosynthesis, and growth.Horse muscle: A horse muscle is a living organism because it is made up of cells that are able to carry out the basic functions of life, such as respiration, contraction, and growth.Blood: Blood is a living organism because it is made up of cells, such as red blood cells and white blood cells, that are able to carry out the basic functions of life, such as respiration, transport, and immunity.Sugar: Sugar is not a living organism because it is a molecule that is made up of carbon, hydrogen, and oxygen atoms. It does not have the ability to carry out the basic functions of life, such as respiration, growth, and reproduction.To learn more about blood, here
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Individuals who have chronic bronchitis most often have:________.
A. a productive cough.
B. normal lung sounds.
C. a barrel chest.
D. substantial weight loss.
Answers
the correct answer is A.
Individuals who have chronic bronchitis most often have a productive cough. The correct option is A.
What is bronchitis?Bronchitis is an inflammation of the lungs' primary airways (bronchi), which causes them to become irritated and inflamed. On either side of your windpipe, the main airways branch off (trachea).
They have a consistent cough and lead to smaller and smaller airways inside your lungs called bronchioles.
Thus, the correct option is A.
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After buying a new house by the lake, a family wanted a better view of the water so they could watch the sailboats. They hired a company to cut down the small trees and shrubs that were blocking the view.
Which type of water pollution is most likely
1 . Nutrient
2.sediment
3.toxic
4. Bacterial
Answers
The water pollution that is most likely to occur is Nutrient pollution
Pollution can be defined as the addition of materials or energy (pollutants) to the environment that damages it, making it undesirable or unfit for life. There are different types of pollution which includes:
--> Air pollution
--> Radiation pollution
--> soil pollution and
--> water pollution.
WATER POLLUTION is defined as the type of pollution that occurs when pollutants are being released into water bodies such as streams, lakes, ocean, beaches making it unsafe to use for both human and aquatic life activities. Depending on the type of pollutants, there are also different types of water pollution, these include:
chemical pollution Groundwater pollutionsediment pollutionmicrobiological pollutionnutrient pollutionsurface water pollution and Oxygen-depletion pollution.NUTRIENT pollution occurs when there is EXCESS of it in the water bodies through organic fertilizer or compost manure from the leaves of the cut down trees and shrubs. When nitrates from the agricultural waste gets into the water body(lake) it can cause a drastic increase in aquatic plant growth, especially algal growth. This excessive growth can lead to a decrease in oxygen level of water they by affecting the aquatic life of the lake.
Therefore the CORRECT OPTION is A Nutrient pollution.
Option B is wrong because sediment pollution is a type that involves loose sand, clay, silt, and other soil particles that are carried from a site by runoff water not from cut down trees.
Option C is wrong because toxic or chemical pollution is caused by chemicals from industrial wastes.
Option D is wrong because it is caused by natural existing bacteria in the water bodies and are capable of causing disease when ingested. Example Vibro cholera bacteria.
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how do i label cells,organ,organ system, organelles,tissue
Answers
Answer:
First is the cell then the tissue then the organelle then the organ then the organ system and finish with you
Explanation:
is that the answer? it it not tell me c:
Describe how glaciers contribute to erosion and deposition.
Answers
Answer:
Like flowing water, flowing ice erodes the land and deposits the material elsewhere. Glaciers cause erosion in two main ways: plucking and abrasion.
Plucking is the process by which rocks and other sediments are picked up by a glacier. They freeze to the bottom of the glacier and are carried away by the flowing ice.
Glaciers deposit their sediment when they melt. Landforms deposited by glaciers include drumlins, kettle lakes, and eskers.
Explanation:
what are the hetrotypes
Answers
Answer: Hetrotypes are organisms (anything that lives) that can make it's own energy without absorbing it from other organisms. Example: Flowers, they get there energy from the sun, not from eating and absorbing other organisms.
Explanation:
Physical elements needed at school to promote quality in educational context
Answers
Answer: The 5 physical elements in school include classroom design, lighting, temperature, air quality, and acoustics. These elements are critical for creating a conducive learning environment that promotes quality education.
The important elements of quality education are the learning enviroment, the teacher and their teaching methods, the educational content, the school management, and the funding and organization.
What is the importance of quality education?Education is at the top of people’s to-do lists around the world. Making sure children go to school and improving education outcomes can transform the growth and prosperity equation.
Education facilitates socioeconomic advancement and is a key factor in eradicating poverty. Education reduces inequalities and promotes gender equality. Education promotes tolerance and promotes a more peaceful society.
The teacher’s job is to create a learning environment in which students feel empowered to learn in a safe and secure environment.
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How does the current affect plankton and nekton life?
Answers
Answer:
Advection by ocean currents modifies phytoplankton size structure at small scales (1–10 cm) by aggregating cells in different regions of the flow depending on their size. This effect is caused by the inertia of the cells relative to the displaced fluid
(iii) 2. (a) (i) IV: V: VI: VII: VIII: State two fi The diagram below is an illush. in mammals. Study it and answer questions 2(a) to 2(f). VI- V VII les involved in the circulation of blood Lok (ii) Identify the parts labelled I to VIII. I: II: III: VIII Pulmonary vein 11 111 IV Name two features that show that the structures are possessed by humans. ria [2 marks]
Answers
The two blood vessels involved in the circulation of blood shown in the diagram are the pulmonary vein (VI) and the pulmonary artery (VII). The pulmonary vein carries oxygenated blood from the lungs to the heart, while the pulmonary artery carries deoxygenated blood from the heart to the lungs.
The parts labelled in the diagram are as follows: I- Superior vena cava, II- Right atrium, III- Tricuspid valve, IV- Right ventricle, V- Pulmonary valve, VI- Pulmonary vein, VII- Pulmonary artery, VIII- Left atrium.
Two features that show that the structures are possessed by humans are the presence of four-chambered hearts and the existence of a closed circulatory system. The four-chambered heart in humans allows for efficient separation of oxygenated and deoxygenated blood, ensuring that oxygenated blood is supplied to the body's tissues. The closed circulatory system in humans ensures that blood is transported within blood vessels, preventing blood from coming into direct contact with other body tissues and organs. This system allows for the efficient transport of oxygen and nutrients to the body's tissues, while also removing waste products such as carbon dioxide. These features are critical for the survival of humans, as they ensure that oxygenated blood is supplied to all body tissues, promoting overall health and well-being.
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iodophores are mixture of
Answers
Answer:
Iodophores are mixture of iodine and surface active agents
Answer:
idophores are mixture of iodine and aldehydes
As a teacher you must ensure that all learners are accommodated in your classroom. Design a poster for your class. The poster should make learners aware about accommodating each other. Mention at most four strategies that you will use to make learners aware. For each strategy show how learners should behave towards each other. The title of your poster should be “INCLUSION IN OUR CLASSROOMS”. Your poster size must be an A4 paper. The poster should be neat and attractive. Your poster should not be handwritten.
Marking criteria
Poster appearance (4)
Strategies (8)
Learners’ behaviour (8)
Total 20
Answers
To create an poster, Title: INCLUSION IN OUR CLASSROOMS, Strategies: Respect and Acceptance. Collaboration and Cooperation Support and Empathy and Celebrate Differences.
Title: Consideration IN OUR Study halls
Techniques:
Regard and Acknowledgment:
Students ought to embrace variety and regard each other's disparities.
Act comprehensively by keeping away from generalizations, bias, and oppressive language or activities.
Treat everybody with benevolence and sympathy, no matter what their experience, capacities, or personalities.
Joint effort and Collaboration:
Urge students to cooperate in gatherings and groups, cultivating collaboration and common help.
Stress the significance of undivided attention, esteeming others' viewpoints, and advancing equivalent cooperation.
Participate in comprehensive conversations, permitting everybody to contribute and it are considered to guarantee assorted viewpoints.
Backing and Sympathy:
Urge students to offer assistance and backing to their friends who might require it, without judgment or prohibition.
Encourage a study hall climate where everybody feels open to looking for help and sharing their difficulties.
Practice sympathy by getting it and recognizing the encounters and sensations of others.
Observe Contrasts:
Advance a culture of appreciation for different societies, customs, dialects, and capacities.
Urge students to share and commend their interesting foundations and encounters.
Participate in exercises that bring issues to light about various societies and empower discourse and understanding.
Keep in mind, the key is to make an alluring and outwardly engaging banner that actually imparts the message of consideration and the systems for students' way of behaving.
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What might happen if the copying of the DNA
during mitosis is done improperly?
Answers
Answer:
it can produce two types of errors or mutations. cancer occurs when mutated cells ignore or override the normal "checkpoints" regulating mitosis and begin to reproduce uncontrollably
Dogs pant because
A) Evaporation causes cooling
B) Evaporation gets rid of excess water in the body
C) It is tired
D) Panting helps to raise body temperature
Answers
Answer:
(A)
Explanation:
they pant because they are cooling there
self down
chromatin consists of . chromatin consists of . membrane wrapped around rna membrane wrapped around dna dna and protein rna and protein
Answers
Chromatin consists of DNA and protein.
What is DNA?
DNA is a genetic component of a cell that contains the instructions needed for an organism to develop and perform its functions. With the usage of DNA molecules, this knowledge is passed down from one generation to the next.
What is protein ?
An amino acid-based compound. The body cannot function correctly without proteins. They serve as the building blocks for various chemicals like enzymes, cytokines, and antibodies as well as for body tissues like skin and hair.
Therefore, Chromatin consists of DNA and protein.
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Scientific theories can be disproven or modified. True or false?
Answers
answer the question please
Answers
The terms that are associated with the shaded area (red) around the Pacific Ocean, which includes El Misti, Lassen Peak, Mt. Fuji, and Tarawera are: Ring of Fire, Volcanoes, and Subduction
What is the Pacific Ring of Fire?The Pacific Ring of Fire is an area around the Pacific Ocean where many active volcanoes and earthquakes occur.
It is called the "Ring of Fire" because it is shaped like a horseshoe or ring and includes countries such as Japan, the Philippines, Indonesia, the United States, and Chile.
This area is characterized by frequent volcanic eruptions and earthquakes due to the movement and collision of tectonic plates.
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Complete question:
Select all of the terms that are associated with the shaded area (red) around the Pacific Ocean, that includes El Misti, Lassen Peak, Mt. Fuji, and Tarawera.
Ring of Fire
Divergent Boundary
Volcanoes
Hot Spot
Subduction