Answer:
Buffer resist the change in pH of solution
Explanation:
Buffer : It minimize the change in pH due to addition of small amount of acid or base.
Buffer solution mostly consist of weak acid and its salt or weak base and its salt.
When H+ ion concentration is increases in the solution then conjugate base present in the solution consumed hydronium ion and it convert into water and weak acid of conjugate base.Therefore, the result in decrease the amount of conjugate base and increase the amount of weak acid.
Buffer maintain the pH of solution.
When the level of H+ ions in the solution increase then pH of the solution decreases then buffer maintain the stable pH of solution.
Which of these human body cells might be better suited to stretch and grow than the others?
A)skin cells
B)nerve cells
C)sperm cells
D)muscle cells
 This substance makes up the majority of your cells, and is necessary for them to carry out most of their chemical reactions.
What is it?
A)Carbon B)Oxygen C)Sugar D)Water
Answer:
(D). water.
Explanation:
Water makes up majority of all cells and is the most abundant molecule present in a cell along with other major biomolecules. It accounts for about 70% of total cell mass.
Water is necessary for the cells to perform most of their chemical reactions as it acts as a solvent and helps in transport of dissolved compounds from or into the cells.
Thus, the correct answer is option (D).
Which is a shared characteristic of all animals? A) they are autotrophs B) they are vertebrates C) they are invertebrates D) they are heterotrophs
The answer is D they are heterotrophs
Answer:
D) they are heterotrophs
Explanation:
All animals are heterotrophs. This means that they get the nutrients (nitrogen, carbon, etc.) and the energy they need to live through plants or other animals, since they do not have a system for the production of their food. All animals need carbon for the proper functioning of their basic processes, such as growth, development and reproduction.
The photograph best illustrates which environmental issues in Asia?
A) Flooding of the Yangtze River
B) Pollution of the Ganges River
C) Damage caused by the building of the Three Gorges Dam
D) "Brown Clouds" that are now common in some parts of Asai
if a number cube is tossed once which of these is the most likely outcome one, 3, a number greater than 1, or number less than 3.
Cell structure quiz anwsers
Cell structure refers to the components and organization of cells, with a distinction between prokaryotic and eukaryotic cells. It includes the study of cytoplasm, cytoskeleton, nucleus, ribosomes, and mitochondria, as well as plant cell-specific structures.
The term cell structure refers to the various components that make up a cell, including its inner workings and the arrangements of its parts. Cells are the fundamental units of life, categorized broadly into prokaryotic and eukaryotic cells, with eukaryotic cells being more complex and including plant and animal cells. The study of cell structure encompasses the understanding of various cellular components, such as the cytoplasm, cytoskeleton, nucleus, ribosomes, and mitochondria, as well as the endomembrane system, which includes the endoplasmic reticulum, Golgi apparatus, and various vesicles that transport proteins and other molecules.
Additionally, specific structures within plant cells, such as chloroplasts, cell walls, and large water-filled vacuoles, distinguish them from animal cells. Studying these components helps in understanding the cell's ability to function, communicate with other cells, and maintain homeostasis. Both the structure and the function of cells are fundamental topics in high school biology.
What is volume? What are the units for volume?
Which career professional sets up, runs, and maintains equipment such as lights
Answer:
Video Equipment Technician
Explanation:
This is the correct response because shooting films would need good lighting and camera people use video equipment to do so.
The table below shows the age of fossils found in four separate layers of an undisturbed rock:
Fossils In Rock Layers
Layer Fossil in Layer Age of Fossil (million years)
A W 550
B X 240
C Y 680
D Z 450
Which is the topmost layer of the rock?
Layer A
Layer B
Layer C
Layer D
The topmost layer of the rock is : Layer B
From the table the layer B is 240 million years and it is the youngest layer. While the oldest layer in the table is Layer C which is 680 million years old.
During the arrangement of rock layers of an undisturbed rock ( i.e. rock that has not undergo any form of metamorphosis either artificially or naturally ) the oldest layer of the rock is found at the base of the rock while the youngest layer is situated as the topmost layer of the rock.
Hence we can conclude that the topmost layer of the rock is Layer B
Learn more : https://brainly.com/question/6948113
At one time, most people believed that the Universe was static, meaning it did not change. When larger and better telescopes were invented in the early 1900s, however, it was discovered that light from objects in space shifted toward longer wavelengths. Scientists concluded that only an expanding Universe could explain this shift. Which of the following statements is supported by this example?
A. The theory of the expanding Universe cannot change, even if new evidence arises.
B. Scientific knowledge can change when new evidence or interpretations arise.
C. The principle of the expanding Universe is a scientific law.
D. Once a scientific theory has been accepted, it can never change.
Answer:
The correct answer is option B, Scientific knowledge can change when new evidence or interpretations arise.
Explanation:
The logical explanation to any scientific theory/law keeps on changing. This is so because the first logical explanation to any scientific theory was the best possible explanation to it available at that time with the limited resources and was accepted by the majority of peers. But with the advancement in technology some new theories may come forward. for example – Earlier it was found that atom in the smallest unit of matter , but with the advancement in high scale microscope it was found that even atom is made of smaller particles like electron, proton etc. Thus the scientific theories/laws get affected by new researches.
wich statement correctly compares nucleic acids and carbohydrates
Which of the following processes most directly helps create soil from rocks? A. melting B. plate tectonics C. pressure D. weathering
Answer:
the answer is D. weathering
Explanation:
because i just did it on study island
It is easy to see the cladogram represents several different types of insects. In the classification of living things, all insects belong to the kingdom Animalia
Which of the following is not a correct equation for centripetal force?
A. Fc=mac
B. F=m v2/t
C. F=m v/r
Explanation:
When a body is moving in a circular path then a force acts on it and this force is directed towards the center around the moving object.
Mathematically, F = [tex]m\frac{v^{2}}{r}[/tex]
where F = force
m = mass
v = velocity
r = radius
The term [tex]\frac{v^{2}}{r}[/tex] is the centripetal acceleration.
Also, expression for centripetal force can be [tex]F_{c} = ma_{c}[/tex], where [tex]a_{c}[/tex] represents acceleration of centripetal force.
Whereas both the expressions F = [tex]m\frac{v^{2}}{t}[/tex] and F = [tex]m\frac{v}{r}[/tex] are not a correct equation for centripetal force.
which element is most likely to share electrons with other atoms in joint orbitals
a) chlorine (7 valence electrons)
b) calcuim (2 valence electrons)
c) argon (8 valence electrons)
d) carbon (4 valence electrons)
e) potassium (1 valence electron)
Answer:
Carbon.
Explanation:
Covalent bonds is the chemical bonds that are formed by the mutual sharing of the electrons. The covalent bond is the strongest bond in the nature.
Carbon has the ability to form to form covalent bond. Carbon neither gains electron ( 6 protons cannot hold 10 electrons) and nor looses electron ( due to high ionization energy). So carbon forms bonds by the sharing of the electrons with the other atoms even in joint orbital.
Thus, the correct answer is option (d).
How does sensation influence our behaviours in the environment
PLEASE HELP!!
Which substances do you think are carbohydrates?
Which substances do you think are lipids?
Which substances do you think are proteins?
(You can pick more than one. answer for each question)
A. Water.
B. Albumin.
C. Unknown substance.
D. Saliva.
E. Potato.
F. Vegetable oil.
A transmission electron microscope would be the best microscope choice to study _______. a. structures smaller than cells b. single celled organisms c. plant leaves d. amphibian organs
The right answer is a. structures smaller than cells.
In the transmission electron microscope, electrons are emitted by heating a tungsten filament (or crystal of lanthanum hexaboride). These electrons are then accelerated with a voltage of between 200 and 1000 kV (1000 kV for the most expensive). Once the vacuum is in the cell, the electron beam is passed through a sample about 3 mm in diameter and less than 20 nanometers thick. Then this beam is focused with the help of magnetic lenses towards the screen or the photographic plate.
The operation of M.E.T is analogous to that of an optical microscope.
In light microscopy, a beam of photons is sent through a sample. This beam is then focused through optical lenses to the image plane of the lens. An enlarged image of the sample is observed.
Is the Meadow Vole a herbivore, omnivore, carnivore, or detritivore?
Under what conditions would a molecule need to be actively transported across a membrane?
Answer:
please give me brainlist and follow
Explanation:
Transport proteins can form a larger opening or pore that allows molecules to pass. Under what conditions would a molecule need to be actively transported across a membrane? A molecule would need to be actively transported when the concentration of the molecule is higher on the other side of the membrane.
A polo player hits a ball with a mass of 0.42kg with a force of 7.35 Newtons. How does the force the polo player's mallet exerted on the ball compare to the force the ball exerted on the mallet?
Which of the following is an organic activity?
a. root-pry
b. abrasion
c. carbonation
d. exfoliation
why should scientific investigations be replicable
Answer:
A. To make sure data is accurate
Explanation:
Answer from Study Island
Robert studies ocean life. He observes that a species of octopus squirts a large cloud of black ink whenever a predator approaches. Which of the following is a scientific question that Robert could ask about what he observed? A. Does a big octopus have a prettier ink cloud than a small octopus? B. Does releasing a cloud of ink make the octopus more likely to escape a predator? C. Does an octopus release a cloud of ink whenever it feels scared? D. Does a predator like the taste of an octopus more than the taste of a squid?
Answer:
Does releasing a cloud of ink make the octopus more likely to escape a predator?
Explanation:
Study island
The ability of water to hold more heat than land keeps the temperature on Earth
Which of the following would introduce bias into an experiment? (1 point)
publishing your experimental results in a scientific journal
allowing other scientists to repeat and verify your experimental results
using a computer to record and store your data
discarding data that does not fit with your personal expectations
In June, there are fewer hours of daylight and less direct in the A. Southern Hemisphere B. Northern hemisphere C. Western Hemisphere D. Eastern Hemisphere
Answer:
Southern Hemisphere
Explanation:
bactria double every generation one bacterium is the first generation how many are in the sixth generation?
What are the six characteristics of living things?
Describe a cell which effectively uses diffusion as a means to move materials in and out. Suggest how being small helps cells survive, and being made of many small cells helps large organisms maintain homeostasis.
I don't know of any cells which effectively uses diffusion as a means to move materials in and out.
Single-celled organisms like amoebas efficiently utilize diffusion for the exchange of nutrients and waste due to their small size, which supports an adequate surface area to volume ratio. For multicellular organisms, consisting of many small cells aids in maintaining homeostasis by ensuring efficient substance exchange.
Cells that effectively use diffusion to move materials in and out include single-celled organisms like the amoeba. Due to the limiting effects of diffusion on size and development, these cells must remain small. Diffusion is an efficient process for the exchange of nutrients and waste in these cells, primarily because their small size allows for adequate distribution throughout the entire cell. As cells grow larger, the center of the cell might not receive enough nutrients or dispose of waste effectively due to the increased distance substances must travel.
Being small helps cells survive as it increases the surface area to volume ratio, which is favorable for diffusion to occur efficiently. For larger, multicellular organisms, being made of many small cells rather than fewer large cells aids in maintaining homeostasis because it ensures that all cells are close enough to the organism's external environment or to internal transport systems like blood vessels, which helps in efficient diffusion and transport of substances.