which definition best describes a buffer?

Answers

Answer 1

Answer:

where are the options

Explanation:

Answer 2
A buffer is a solution that resists changes in pH upon the addition of a small amount of strong acid or strong base. ... A buffer is composed of a mixture·of a weak acid its conjugate base. (Sometimes a solution that is technically a buffer does NOT resist changes in pH.

Related Questions


3.3
Predict the possible genotypes of offspring if two roan heterozygous
polled cattle were mated​

Answers

Answer:

RR, Rw, Rw, ww

Explanation:

Rw

R

w

RR, Rw, Rw, ww

The phenotypes would be 1 Red, 2 Roan, and 1 white, assuming the colors of roan are white and red and red is dominant white is recessive, hope that helps!

Hello ! I need to make on Poetry about the snake to make everything what I know about him , means were it lives , what his ears , what is look like , different colour,there is venomous,etc , some on can help me please? Thank you

Answers

Answer:

try to explain a little more of exactly what you need. a poem about a snake am I correct?

what do you mean by bone​

Answers

Answer:

bone is a substance that forms the skeleton of the body

Primary sensory afferent axons have widely varying diameters, and their size correlates with the type of receptor to which they are attached. Write down the axons that are the smallest and the slowest?

Answers

Answer:

Smaller and slower axons are those related to temperature, itching and pain.

Explanation:

As you may already know, the axon is an extension of the neuron that has the ability to transmit signals to cells, indicating the nerve impulse that must be felt by the body. In other words, the axons receive a synapse, which is the nerve impulse, and pass this message on to a nerve cell to turn it into a sensation. These axons have varying diameters and the speed at which they transmit messages also varies. According to researches, the smaller and slower axons are those related to the sensation of temperature, itching and pain.

Part C: Take Notes In a separate location, take notes from the sources you have identified. The notes will provide details for your presentation. While taking notes from texts and websites, use these reading strategies. In the space provided, write four pieces of information that you intend to use in your presentation. im to lazy to write the notes

Answers

Answer:

I do that sometimes I take notes in a separate location so is this like for your math homework cuz I am good enough but I don't like it that much but I'm good at it and sources identify things that will the source is like a key a key like you can open and close the door with and you're opening the key with the source so it really really really really and wouldn't be a good thing to take notes wherever you go like if you were writing a book you would want the source and the emotion and everything you wanted to buy

Andrew is trying to identify an unknown element. The element is dull and
brittle, and it is a poor thermal and electrical conductor. Where on the periodic
table is this element most likely found?

Answers

Answer:

non metals

Explanation:

2
Organism A
Offspring 1
Offspring 2
The diagram below represents a form of cellular reproduction
Fi
As a result of this process, offspring 1 and offspring 2 will have *
(2 Points)

Answers

Answer: A

Explanation:

they will have different traits because they will each have different dna but the same amount of genes

Offspring 1 and offspring two will have the same number of genes but different traits. So, the correct option is A.

How the same number of genes?When a sperm fertilizes an egg cell, each parent contributes 23 chromosomes with genetic information to the offspring. This means that each cell of the offspring's body has 23 chromosomes that contain instructions for their development, including their traits.

What are the different traits?Parents pass on traits, such as eye color and blood type, to their offspring through their genes. Some health conditions and diseases can be passed on. Sometimes, one characteristic has many different forms. For example, blood type can be A, B, AB, or O.Eye color is based on the amount of pigment melanin in the iris. Every gene has an allele from its parents, so many variations are possible.  Because of this, even if parents have blue eyes, offspring can have brown or green eyes, or one offspring can have blue, and others can have different eye colors from their family.

Thus, we can conclude that two offspring will have the same genes but different alleles.

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What is a working copy of DNA that leaves the nucleus of the cell? And is read by organelles called that connect amino acids together to make proteins

Answers

Answer:

Messenger RNA

Explanation:

Which of the following is a skin sensory receptor for touch?
A) Pacinian corpuscle
B) Meissner's corpuscle
C) Ruffini body
D) free nerve ending

Answers

The answer is B.Meissners corpuscle

Meissner's corpuscle is a skin sensory receptor for touch.

Meissner corpuscles are responsible for the sense of touch or light pressure, that is, they are very sensitive to the movement of objects on the skin and to very low vibrations.

About Meissner corpuscles:

• They are located on the lips and fingertips and are very sensitive.

• Meissner corpuscles act when there is a soft and light touch, and when vibrations are less than 50 hertz.

• These receptors can be altered when there is the presence of diseases where both thermal and tactile sensitivity are altered.

Therefore, we can conclude that Meissner corpuscles detect fine touch, that is, they are receptors on the skin that are sensitive to low-frequency vibration.

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Which of the following is not a main characteristic of a mineral?
A. Man-made
B. Solid
C. Predictable chemical composition
D. Inorganic

Answers

The answer is A. Man-made

True during development the skeleton of a fetus is made of cartilage which is converted to bone before birth

Answers

Answer:

Early in gestation, a fetus has a cartilaginous skeleton that becomes bone in ... At birth, a newborn baby has over 300 bones, while on average an adult human has 206 bones ... It is composed of fibers and granular cells in a matrix. ... The hypertrophic chondrocytes (before apoptosis) secrete vascular endothelial cell growth ...

Explanation

n:When does the fetal cartilage turn to bone?

Key milestones in fetal bone development

Weeks pregnant Milestone

7 weeks Bone outlines for entire skeleton established; cartilage is forming

8 weeks Somites disappear; joints start forming

10 weeks Bone tissue forms and starts hardening (ossification)

16 weeks Your baby can move his limbs

why it is important that we have an understanding of geologic time

Answers

Answer:

Time is a very important variable in geology because the exact timing of spatially separated events allows us to reconstruct the surface and surface conditions of the ancient earth. Geologic time spans are considerably more difficult to comprehend than historical time spans because they are so incredibly long.

One reason is so that we can fully understand how geological processes that seem impossibly slow can produce anything of consequence. For example, we are familiar with the concept of driving from one major city to another: a journey of several hours at around 100 km/h. Continents move toward each other at rates of a fraction of a millimetre per day, or something in the order of 0.00000001 km/h, and yet, at this impossibly slow rate, they can move thousands of kilometres. Sediments typically accumulate at even slower rates — less than a millimetre per year — but still they are thick enough to be thrust up into monumental mountains and carved into breathtaking canyons.

Another reason is that for our survival on this planet, we need to understand issues like extinction of endangered species and anthropogenic (human-caused) climate change. Some people, who don’t understand geological time, are quick to say that the climate has changed in the past, and that what is happening now is no different. And it certainly has changed in the past. For example, from the Eocene (50 Ma) to the present day, Earth’s climate cooled by about 12°C. That’s a huge change that ranks up there with many of the important climate changes of the distant past, and yet the rate of change over that time was only 0.000024°C/century. Anthropogenic climate change has been 1.1°C over the past 100 years, and that is 45,800 times faster than the rate of natural climate change since the Eocene.

Hypothesize and diagnose the impact of variability on enzyme ability

Answers

Sorry bro but I don’t know

Explain how sunlight is the primary source of energy for your own life

Answers

Answer: ok...

Explanation:

The continual input of energy, mostly from sunlight, sustains the process of life. Sunlight allows plants, algae and cyanobacteria to use photosynthesis to convert carbon dioxide and water into organic compounds like carbohydrates. This process is the fundamental source of organic material in the biosphere.

Why do v sneeze
plz explain it step by step​

Answers

You’re just releasing air that helps your body get rid of irritants that are in our throat and nose. Such as, pollen, dust, etc.

Which of the following models describes the way in which DNA Replication occurs?


semiconservative

dispersive

random

conservative

Answers

Answer:

semiconservative

Explanation:

The semiconservative model of DNA replication states that only one DNA strand is used as template for the synthesis of the other new strands. In DNA replication, the DNA molecule is first unwind into a replication fork containing two single strands of DNA.

After unwinding, DNA polymerase synthesizes new complementary strands of DNA using each of the old strands. So in essence, the two DNA molecules after replication consists of one old and one new strand of DNA. This is basically the semi-conservative model of DNA replication.

Write any two demerits of local system of measurement.​

Answers

Answer:

) It's easier for younger people to change than older people. (3) It ignores, and devalues cultural differences, expressions, and idioms, based on imperial measurements. For example: can a British pub be truly British without "Pints of beer"? - "Half a litre of beer" doesn't quite have the same ring to it!

1. cannot be used in international trade.

2. cannot be used in scientific experimemts.....

Clear-cutting and logging of tropical rain forests causes issues with excess carbon dioxide in the atmosphere and low rainfall. The land that is cleared and used for farming become depleted of nutrients and thus are useless. Do we have any right to tell other countries how to manage their lands, such as rain forests? If we explain the consequences of clear-cutting the rain forests but that government decides to continue with the process, should we interfere?

Answers

Answer:

yes cause those tropical rain forests are important

Explanation:

Complete each statement by using the appropriate word or phrase from the list. Then place the statements in the order of an action potential repolarization event.
1. Through the activated channels, _________ now flows outwards causing the membrane to repolarize back towards RMP.
2. As the membrane potential ___________, the voltage-regulated sodium channels begin closing which in turn reduces the sodium movement to the ICF
3. With a larger duration of activation than sodium channels, the potassium channels allow for a greater movement of potassium to the ECF causing a short period of_______.
4. With membrane potentials approaching +35 mV, the _________channels become fully activated.
a. Sodium
b. Voltage regulate sodium
c. Potassium
d. Rises towards zero
e. Hyperpolarization
f. Voltage regulated potassium

Answers

Answer:

1. Potassium

2. increasing towards zero

3. hyperpolarization

4. voltage-regulated Potassium

Explanation:

Membrane potential can be defined as the difference in electric charges inside and outside of a cell. The resting membrane potential (RMP) occurs when there is no net current across the membrane and therefore the cell is in a non-excited state. At the RMP, sodium ions (Na+) are more concentrated inside the extracellular fluid (ECF) than inside the intracellular fluid (ICF), while potassium ions (K+)  are more concentrated inside the ICF. The diffusion of K+ outside the cell triggers its hyperpolarization, by becoming the membrane potential more negative compared to the resting potential. As the potential nears +35 mV, the voltage-regulated potassium channels are open, thereby K+ ions leave the cell down its concentration gradient, while voltage-gated Na+ channels become saturated and inactivate.

Which process results in the formation of two identical daughter cells

Answers

Explanation: During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. ... If all conditions are ideal, the cell is now ready to move into the first phase of mitosis.

Answer:

answer is D

answer is mitosis

Explanation:

hope this helps!

¿Cuál es el rol de la genética microbiana en el contexto de la Biología?
¿Qué aplicaciones tiene la Genética Microbiana hoy en día?

¿En qué consiste el protagonismo de la Genética microbiana en el devenir histórico de la Biología?

Answers

Answer:

- La genética microbiana ha sido fundamental para la comprensión de diferentes mecanismo genéticos y evolutivos  

- Los microrganismos son ampliamente utilizados en medicina y procesos biotecnológicos  

- La microbiología ha permitido descartar la teoría de la generación espontanea (anteriormente aceptada en biologia) como así también formular nuevas teorías (hoy en día ampliamente aceptadas por la comunidad científica)

Explanation:

La genética microbiana juega un papel fundamental en biología, ya que los organismos microscópicos (por ejemplo, bacterias) poseen características únicas para el estudio de mecanismos genético/moleculares tales como, por ejemplo, 1-un corto tiempo generacional y 2-la capacidad de manipulación de un número de organismos muy alto (N muestral) en un laboratorio. En consecuencia, los microrganismos permiten estudiar mecanismos genéticos y evolutivos con mayor grado de precisión y versatilidad al ser comparados con organismos pluricelulares. La microbiología ha permitido el desarrollo de técnicas esenciales en el campo de la biología molecular: la técnica de edición genómica CRISPR-Cas9 se basa en el sistema adaptativo que poseen ciertas bacterias para hacer frente a infecciones virales. La biotecnología microbiana ha permitido también desarrollar diferentes tipos de alimentos y procesos biotecnológicos (por ejemplo, la cerveza y ciertos productos lácteos requiere la utilización de microrganismos para llevar a cabo el proceso de fermentación). Por otra parte, mediante técnicas de recombinación genética podemos explotar las características de los microrganismos para producir a gran escala ciertos productos biotecnológicos y medicinales (por ejemplo, producir insulina para uso humano). La microbiología emergió en la segunda mitad del siglo XIX y desde entonces ha posibilitado el desarrollo de importantes avances para el tratamiento y cura de enfermedades infecciosas, como así también descartar teorías tales como la generación espontánea y generar nuevos conocimientos en el campo de la biología y la genética (por ejemplo, el descubrimiento que el ADN se replica de manera semiconservativa fue realizado utilizando cepas de E. coli).

cual es la causa para que los oceanos se expanden entre 3 y 10 cm por año

Answers

Answer:

El calentamiento global causa que el nivel del mar se eleve, debido a que el hielo en las plataformas continentales se derrite y que el agua del océano se expande al calentarse.

Discuss how the concept of "survival of the fittest" was developed and what it means.

Answers

Explanation:

Survival of the fittest is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection.In On the Origin of Species, he introduced the phrase in the fifth edition published in 1869, intending it to mean "better designed for an immediate, local environment".

Answer:

there right^

Explanation:

edge22

Which of the following statements is correct regarding engineering maize plants with a herbicide-resistance gene using Agrobacterium-mediated plant transformation?

a. The Ti-plasmid used for this experiment must contain tumor-inducing genes.
b. The herbicide-resistance gene is cloned into the T-DNA region of the Ti-plasmid.
c. The herbicide-resistance gene is cloned into a region outside of the T-DNA in the Ti-plasmid.
d. A guide RNA is used to transfer T-DNA from Agrobacterium to the plant cell.
e. The whole Ti-plasmid containing the herbicide-resistance gene is inserted into the maize genome after infection with Agrobacterium

Answers

Answer:

b. The herbicide-resistance gene is cloned into the T-DNA region of the Ti-plasmid.

Explanation:

Ti-plasmid has the ability to introduce part of its DNA (t-DNA) into the genome of host plants. This is very important for the relationship of genetic manipulation in maize plants, with the aim of inducing a gene that promotes herbicide resistance. In addition, T-DNA has many genes that code for the production of plant growth phytohormones, which is extremely important for the cloning process to work. In this case, we can assume that the correct answer for yours is the letter B.

Science is concerned with explaining natural phenomena, based on observation, experiments, and evidence. Other questions are best answered by using other forms of knowledge and understanding, such as art, philosophy, or religion. Read each topic and select the topics for Science.
Select ALL that apply.

behavior of alligators

meaning of existence

black holes

deep-sea vents

the Aurora Borealis (Northern Lights)

ghosts, goblins, and other creatures in stories

Answers

Answer:

These:

Explanation:

behavior of alligators

black holes

deep sea vents

the Aurora Borealis

Behaviour of alligatorsBlack holesDeep-sea ventsThe Aurora Borealis

What is natural phenomena?

Any event or an occurrence that happens on its own without any human intervention is termed as a natural phenomena.

Natural phenomena harms the nature as well as life on earth.

Common examples of natural phenomena include thunder storms, earthquakes, landslides, volcanic eruptions, hurricane etc.

Some majestic natural phenomena include blood rain, Northern lights and luminous water in the world.

Natural phenomena can sometimes be destructive in nature and are therefore responsible for loss of lives and property.

It is almost impossible to predict the occurrence of any natural phenomena.

However, the negative outcome of natural phenomena can be managed with special disaster management operation

Thus, natural phenomena could only be observed and understood in science.

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How does variation in the environment affect natural selection?

Answers

Answer:

It effects the way that certain traits in a species evolve in an area due to being better for dealing with the environment more effectively.

Explanation:

This is legit how nature works. Please rate 5 stars.

State three different information about zygote.

Answers

Answer:

A zygote is the union of the sperm cell and the egg cell . Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization. After this two-week period of cell division, the zygote eventually becomes an embryo.

Explanation:

Hello what is this? I need help quick pleasee

Answers

B because B is the nucleus which is the storage location of DNA
The answer would be B.

Increasing __________ is one of the most effective treatments for bowel and bladder problems.

Answers

Dietary fiber and fluids (mark brainliest)

What would happen to the weight of an ice cub if it melted?

A) it would weigh a little more.
B) it would weigh a lot less.
C) it would weigh the same.
D) it would weigh a lot more.

Answers

Answer:

C. it would weigh the same

Explanation:

The mass of the ice doesn't change as the ice melts, so the volume displaced remains the same whether its is solid or liquid.

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please calculate this limit please help me 17. Which of the following is true about the Blood Alcohol Level (BAL)measurement?A. The same amount of alcohol always produces the same BALB. The same BAL always produces the same level of impairment,C. The presumptive limit for driving in Florida is a 08 BALD. All of the above w= 2hx - 11x Solve for X. Please and Thank you You get 11 points if you answer a.s.a.p list out any the similarities betweencommunity and society. Convert 4cm to meters what is absolute location Jefferson tutoring had the following payroll information on Feb 28: Gross pay: 4,000 Cumulative earnings prior to this payroll: 4,000 Assume:FICA tax rates are OASDI 6.2% on a limit of 117,000 and medicare 1.45%.State unemployment tax rate is 2% on the first 7,000.Federal unemployment tax rate is 0.8% on the first 7,000 Using the information above the journal entry to record the payroll tax expense for jefferson tutoring would include:____.A. a credit to FUTA payable for 24.B. a debit to payroll tax expense in the amount of 390.C. a credit to SUTA payable for 60.D. all of the above. What's The opposite meaning for devote? Pattys gymnastics class is 56 of an hour long. Patty practices five different skills and spends the same amount of time on each skill. How can you find how much time she spent on each skill?Explain how to use an area model to solve the problem. Will someone help me with my history homework, please?1. 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She is so preoccupied with perfection she almost never gets things done on time. She procrastinates and focuses so closely on trivial details that she often fails to see how the details fit into the bigger picture. Socially, she rarely goes out because she is too busy working. She often won't make choices because she fears making the wrong choice. Meg's life is dominated by rigid expectations and goals. Meg is suffering from _____personality disorder. 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