A change in pH has the greatest impact on which life proces
Answer:
Aquatic Organisms
If the pH of water is too high or too low, the aquatic organisms living within it will die. pH can also affect the solubility and toxicity of chemicals and heavy metals in the water ¹². The majority of aquatic creatures prefer a pH range of 6.5-9.0, though some can live in water with pH levels outside of this range.
Explanation:
Adding more OH- ions increases the pH, making the substance more basic. Increasing the pH will increase the number of OH- ions, so the equilibrium will shift to the left. Decreasing the pH will increase the number of H3 O+ ions; they'll ''use up'' the OH- ions, thus shifting the equilibrium to the right.
If a cell is placed in a hypertonic solution then?
Answer:
If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ). ... A single animal cell ( like a red blood cell) placed in a hypotonic solution will fill up with water and then burst.
Explanation:
which part of the brain receives messages from the hair-like receptors
Help this is due in an hour
Answer:
Chloroplasts absorb sunlight and store chemical energy
Explanation:
The chloroplasts capture sunlight and store energy
The _______ variable is what the experimenter manipulated/changes to see the effect
inn
recut
Answer:
independent variable
Explanation:
What does the atomic number tell you about the element?
O number of protons
number of electrons
O number of neutrons
O total number of neutrons and protons
Answer:
These two numbers are fixed for an element. The mass number tells us the number (the sum of nucleons) of protons and neutrons in the nucleus of an atom. The atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom. It is traditionally represented by the symbol Z.
Explanation:
(D) O total number of neutrons and protons
When heart rate increases what else increases?
Answer:
Your heart increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps. Generally speaking, your heart beats both faster and stronger to increase cardiac output during exercise.
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the oxidation of one three-carbon molecule into one acetyl coa molecule.
Answer:
The Answer is: pyruvate oxidation
Explanation:
In prokaryotes, it happens in the cytoplasm. Overall, pyruvate oxidation converts pyruvate—a three-carbon molecule—into acetyl CoAstart text, C, o, A, end text—a two-carbon molecule attached to Coenzyme A—producing an NADHstart text, N, A, D, H, end text and releasing one carbon dioxide molecule in the process.
Ok this is the last one
Answer: Acceleration
Explanation:
what is the substrate for the first step in glycolysis?
Answer:
Glycolysis starts with one molecule of glucose and ends with two pyruvate (pyruvic acid) molecules, a total of four ATP molecules, and two molecules of NADH
Explanation:
Hexokinase catalyzes the phosphorylation of glucose, where glucose and ATP are substrates for the reaction, producing a molecule called glucose 6-phosphate and ADP as products.
Please help with answer 3 :)
Answer:
1) Diffusion : Is the movement of molecules / ions from a region of higher to lower concentration. It may or may not occur across a semi permeable membrane.
In diffusion there is no challenge involved as it is along the concentration gradient, but in active transport movement of molecules occur against concentration gradient ie; from lower to higher concentration.
2) For active transport, energy is vital for movement, in this case protein molecules function as molecular pumps to enable the cell accumulate glucose/ions, against concentration gradient. Here metabolic energy ATP is required.
3)Facilitated diffusion is a type of passive transport in which ions/molecules cross the semi permeable membrane because permeases present in the membrane facilitate the transport.
Like simple diffusion facilitated diffusion doesn't require metabolic energy and simply occurs across the concentration gradient.
4) Osmosis : is movement of water from hypotonic solution (lower concentration) to hypertonic solution (higher concentration) through a semi permeable membrane.
The cell membrane being permeable to water allows to and fro movement of water molecules along the concentration gradient.
How do woodland forests and grasslands differ? Multiple choice question. A) Grasslands have few trees. B) Grasslands have warm weather. C) Grasslands have no birds.
Answer:
A grasslands have few trees
Explanation:
can solute particles pass through the membrane of a semipermeable membrane?
Answer:
No.
Explanation:
No, solute molecules are larger in comparison to solvents, so they cannot pass through the semi-permeable membrane.
Answer:
Nope Nope Nope, They cannot pass through it
Explanation:
Osmosis describes the diffusion of the solvent through a semipermeable membrane. The driving force of the solvent shift is the concentration difference of solutes in the solutions separated by the semipermeable membrane. In contrast to solvent, solutes cannot pass this barrier.
how are relative time and absolute time applied to studying the geologic time scale?
Answer:
Relative time is the physical subdivision of the rocks found in the Earth's geology and the time and order of events they represent. Absolute time is the measurement taken from the same rocks to determine the amount of time that has expired.
how do scientist test thier hypothesis
Answer:
By experimenting on the hypothesis using step by step scientific methods.
Gathering the data, analyzing the data, drawing conclusions and if the hypothesis isn't conclusive a new hypothesis will be formulated to check out the problem.
during the process of ________, an existing tissue is replaced by bone.
One of the most common plants in Atlantic salt marshes is cordgrass. periwinkle snails cling to the top of tall cord grass is during high tide. The tall cord grass is provide protection from the snails predators such as blue crab. well the snails do not be directly on cordgrass the snails can damage the cord grass when they grays and algae and fungi that grow on the grasses. if the snail populations grow too large they can decrease cord grass growth.
Cordgrass is a biotic factor for the snails because it is a living source of protection in the Atlantic salt marshes for the snails. Hence option B is correct.
Biotic factors - The living components or the living things that are present in the ecosystem that shapes the environment are known as biotic factors. Examples are plants, bacteria, algae, birds, fishes etc.
A ecosystem runs through the interaction of biotic and abiotic component. Biotic supplements acts as a fuel that supports the bacterial growth.
Periwinkle snails graze on the top of the cordgrasses to escape from their predators blue crab. They graze on the fungi and algae that is inhabitant on top of the grass, they do not feed directly on the cordgrass
While grazing they actually damage the cordgrass by spreading the fungal infection.
Hence, option B is Cordgrass is a biotic factor for the snails because it is a living source of protection in the Atlantic salt marshes for the snails is correct.
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The correct question is :
One of the most common plants in Atlantic salt marshes is cordgrass. Periwinkle snails cling to the top of tall cordgrasses during high tide. The tall cordgrasses provide protection from the snails’ predators, such as the blue crab. While the snails do not feed directly on the cordgrass, the snails can damage the cordgrass when they graze on algae and fungi that grow on the grasses. If the snail population grows too large, it can decrease cordgrass growth.
Question
Based on the passage, which of the following describes the ecological role that cordgrass serves for the snails?
Responses
A. Cordgrass is a biotic factor for the snails because it is the snails’ main food source.
B. Cordgrass is a biotic factor for the snails because it is a living source of protection in the Atlantic salt marshes for the snails.
C. Cordgrass is an abiotic factor for the snails because it provides habitat for the snails and crabs.
D. Cordgrass is an abiotic factor for the snails because it produces algae and fungi for the snails.
the cytoplasm of a skeletal muscle cell has a specific name and is known as
Answer:
Explanation:
A skeletal muscle cell is surrounded by a plasma membrane called the sarcolemma with a cytoplasm called the sarcoplasm. A muscle fiber is composed of many fibrils, packaged into orderly units.
Which cell structures work together to form a pseudopod?
A. cell wall and nucleus
B. eyespot and chloroplast
C. cytoplasm and plasma membrane
D. contractile vacuole and mitochondria
cytoplasm and plasma membrane
Pseudopodia are formed by some cells of higher animals (e.g., white blood corpuscles) and by amoebas. During amoeboid feeding, pseudopodia either flow around and engulf prey or trap it in a fine, sticky mesh.
1. Why do most enzymes have Km values the same or similar to the concentration of their substrates This is necessary for cooperative enzymes All answers are correct (except none) Allows the enzyme to function at Vmax None of these answers are correct Allows Vo to respond to changes in substrate concentration
Answer:
c
Explanation:
I am able to fill a glass of water to the top and it does not overflow…which property of water allows this to happen
Answer: surface tension
Explanation:
Answer:
When we fill the glass with water, we notice right away that it can go over the brim of the glass without spilling. This is because of surface tension. Surface tension holds the water together and acts against what would normally cause the water to fall – gravity – because each molecule of water is attracted to the other water molecules around it.
Explanation:
extra facts Water molecules are attracted to each other and is why you can fill a glass and as it gets to the top it will stay together to a certain point. However that stick together ability is pretty mild so when gravitational forces take effect the bonds are broken and it flows down the sides of the glass. Unfortunately, the attraction between the water molecules is only so strong. As we add coins, the amount of water spilling over the edges is getting larger and larger until the water just can’t take it anymore! Gravity is pulling on too many of the molecules for their attraction to keep them up, and the water spills down the side of the glass.What to Do. Place the glass on the saucer and fill the glass of water all the way to the brim. You’ll notice that the water hangs slightly over the top of the glass but doesn’t spill out just yet. Now, add the coins one at a time to the glass of water, dropping them in rim-first (not face down).
How do the ocean waters most often provide fresh water for the Earth?
Answer:
alter precipitation and storm patterns
Explanation:
2. A compound is (circle the BEST answer)
a. One type of element
b. More than one type of element
c. More than one type of element chemically bonded.
Which of the following statements are FALSE? A. Meiosis separates homologous chromosomes in a diploid cell to produce haploid daughter cells containing one copy of each type of chromosome. B. During prophase I, homologous chromosomes pair up and exchange DNA. C. During meiosis II, paired homologous chromosomes move up to the equator of the cell. D. During anaphase I, homologous chromosomes separate. E. In meiosis II, the sister chromatids of each chromosome separate. F. In meiosis I, ploidy is reduced. G. In meiosis II, ploidy is reduced. H. During anaphase I, sister chromatids separate.
The statements about meiosis that are false include the following:
C. During meiosis II, paired homologous chromosomes move up to the equator of the cell.
G. In meiosis II, ploidy is reduced.
H. During anaphase I, sister chromatids separate.
Meiosis can be defined as a type of cell division or duplication that occurs in all body cells found in living organisms, through which a single cell divides twice to produce four (4) haploid cells (gamete).
During cell division, deoxyribonucleic acid (DNA) must be replicated before meiosis can take place in any body cell found in living organisms.
Generally, the phases or steps that occur during meiosis include:
Prophase I.Metaphase I.Anaphase I.Telophase I.Prophase II.Metaphase II.Anaphase II.Telophase II.Furthermore, the statements about meiosis that are false include the following:
1. During meiosis II, paired homologous chromosomes move up to the equator of the cell.
The movement of paired homologous chromosomes to the equator of the cell takes place during prophase II.2. In meiosis II, ploidy is reduced.
Actually, it is meiosis I that reduces ploidy.3. During anaphase I, sister chromatids separate.
Sister chromatids are separated during anaphase II.Read more: https://brainly.com/question/12103012
Explain how the model of the chemical reaction above demonstrates that matter is conserved.
Answer:
Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions
16. Which of the following stimuli would cause the liver to produce more glycogen?
Some people say it’s B or C, which one is correct?
the nucleic acid sequence in mrna is determined by:
Answer:
attarction between a codon
Explanation:
All of the following occur during RNA processing EXCEPT______________A) a protective cap is added on the 5' end of the pre-mRNAB) a tail of many adenine nucleotides is added to the 3' end of the mRNAC) the exons and introns are both removed from RNA
During RNA processing, a protective cap is added to the 5' end of the pre-mRNA, a tail of many adenine nucleotides is added to the 3' end, and only introns are removed. The correct option is C.
The pre-mRNA synthesized during transcription undergoes some processing before being ready for translation. The first thing is the addition of a protective cap to the 5' end and the modification of the 3' end by the addition of a long string of adenine nucleotides.
Thereafter, the pre-mRNA is spliced to remove non-coding sequences, also known as introns. The coding sequences (exons) are joined afterwards before the mRNA is ready to be translated.
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ribozymes are rna molecules that have enzymatic activity. this conflicts with the belief of early molecular biologists that
Ribozymes conflict with the belief of early molecular biologists that each enzyme is a polypeptide. A ribozyme is composed of RNA.
A ribozyme (ribonucleic acid enzyme) is an RNA molecule capable of speeding up a chemical reaction.
In consequence, ribozymes have catalytic activity.
For example, within the ribosome, the large subunit of ribosomal RNA acts as a ribozyme that links amino acids during the synthesis of polypeptide chains.
On the other hand, enzymes are specific proteins (composed of amino acids) that can speed up chemical reactions.
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Theophrastos was considered the "Father of Botany" as early as:
Answer:
the approximate year: 300 B.C.
Explanation:
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