Buffers are substances that help resist shifts in pH by (From the close reading exercises)
A. releasing H+ to a solution when acids are added.
B. donating H+ to a solution when bases are added.
C. accepting H+ from a solution when acids are added.
D. both donating H+ and accepting H+.
Answer:
Buffers are substances that help resist shifts in pH by both donating H⁺ and accepting H⁺ (option D).
Explanation:
A buffer is a chemical substance capable of balancing the pH of a solution, when the balance is altered by the addition of an acid or a base. They are also called cushioning solution, and can be formed by an acid and its base conjugated, with a specific range of action.
The presence of a buffer in a solution has the ability to release hydrogen ions (H⁺) or accept them, helping to balance the pH, in the presence of a base or an acid, respectively. That is, a buffer can yield H⁺ to a solution when there are few or accept H⁺ when its content is high.
The other options are not correct because:
A. Buffers do not release H+ into a solution when acids are added, but accept them.
B and C. Giving up H+ to a solution when bases are added or accepting H+ from a solution when acids are added are effects that buffers can potentially do, which is described in the text above.
Leukemia is a malignant progressive disease in which the bone marrow and other blood-
forming organs produce increased numbers of immature or abnormal white blood cells.
Which statement about cell cycle checkpoints describes how this disease occurs?
A Dysfunctional checkpoints may lead to abnormal cell growth.
B Defective checkpoints result in death of a cell.
C Normal checkpoints assess damage to cancer cells.
D Cell checkpoints fail only in meiosis.
What would this be.
Answer:
A Dysfunctional checkpoints may lead to abnormal cell growth.
Explanation:
One of the hallmarks of cancer is unregulated cell proliferation. This means cells keep dividing, producing large numbers of often abnormal cells.
There are many of ways this can happen, such as increased signals telling the cells to divide, and dysfunctional cell cycle checkpoints that do not stop the cell from dividing. This leads to the accumulation of mutations and abnormal cell growth.
What would eventually happen to a cell left in a hypotonic solution?
a. The cell would not change
b. The cell would shrink and shrivel
C. The cell would get bigger and eventually explode
Answer: C. The cell would get bigger and eventually explode :) hope this helps
Answer:
I am pretty sure its C
Explanation:
the cell get bigger and explodes
the diagram shown represents a dihybrid cross between two pea plants heterozygous for both seed color and seed shape.
what is the phenotypic ratio of the offspring?
A. 1:1:1:2:2:2:2:4
B. 1:3:3:9
C. 1:4
D. 4:12
Answer:
1:3:3:9
Explanation:
There are 12 yellow seeds, from which 9 are smooth and 3 are rough.
There are 4 green seeds, from which 3 are smooth and only 1 is rough.
Both the appearance and color of the seeds is something you need to look out for when dealing with phenotypes.
The phenotypic ratio of this dihybrid cross will be 1:3:3:9.
What is phenotype?The term phenotype simply refers to a trait that may be observed. Pheno means observe and is derived from the same root as "phenomenon." As a result, it's a sort of organism that can be seen, and it may relate to anything from a common characteristic like height or hair color to the presence or absence of disease.What is dihybrid cross?A mating experiment between two animals that are identically hybrid for two features is referred to as a dihybrid cross. A heterozygous organism is one that possesses two distinct alleles at the same genetic location, or locus.The cross between a homozygous pea plant with round yellow seeds and wrinkled green seeds is an example of a dihybrid cross.RRYY alleles are found in round yellow seeds, while rryy alleles are found in wrinkled green seeds.Hence the correct option is B.
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are insects natural resources?
Answer:
I'm not sure. Just guessing, I would say yes. They are not man made.I hope this helps! :)
Does each ecosystem have
the same
limiting factors?
Answer:
No, They vary from ecosystem to ecosystem.
Which of the following is an example of how enzymes are catalyst?
A. Enzymes can alter the free energy change (∆G) for a chemical reaction.
B. Enzymes increase the free energy of the reactants to make the reaction go faster.
C. Enzymes provide the activation energy for the reactions they facilitate.
D. Enzymes lower the activation energy so that reactants absorb enough energy to reach transition state.
Answer:
d
Explanation:
Which characteristic of life is the car missing that leads someone to conclude it is not alive? Please answer in complete sentences
Answer:
Explanation:
a car does not have the ability to reproduce, or maintain homeostasis. Unlike all living things
7. What happens during mitosis?
(a) The nucleus of the cell divides.
(b) The cytoplasm of the cell divides.
(c) The cell divides.
(d) The DNA replicates.
Answer:
(c) The cell divides.
Mitosis is the process in which a cell divides.
Mitosis is one of the two types of cell division. The other type of cell division is Meiosis.
Meiosis takes place in reproductive cells and the cell is divided into two which is further divided into four by Meiosis-II
While in Mitosis the process is somewhat similar, the parent cell divides into two new cells and there is no further division and also the parent cell and the two daughter cell will be the exact same
Animals and plants that are unable to adapt to their environment will become
A- Prey
B- A new species
C- Extinct
D- Hungry
I think A or C
Explanation:
It really depends on how the question is phrased. Animals and plants that are unable to adapt to their enviroment will become- Hold it right there. How long will they be unadaptable? Is this forever? If so then yes, they will definately become extinct. If this is for a short amount of time then no, they will become prey, but there is also the fact that yes, they will become hungry. Because if they are not adapted then how are they gonna know the best sports for grub? Same thing for plants, if they can't adapt to the climate, they cannot produce food for themselves. Basically, if its a simple question then forget about everything else. It's Prey, because animals that can't adapt to their enviroment are immedietly in danger. Now if this question has more to it then I would go for C. But overall Just go with prey for now.
I will mark BRAINLIEST
Which of the following does not occur in an aquatic ecosystem as a result of nutrient loading?
a. acidification of the water
b. algae growth as a result of eutrophication
c. degraded quality of water for human and livestock consumption
d. improved water habitats for human recreation
Answer:
D
Explanation:
Egdenuity 2022
Improved water habitats for the human recreation does not occur in an aquatic ecosystem as a result of nutrient loading. Thus, the correct option is D.
What is Nutrient loading?Nutrient loading means the total amount of a nutrient such as elements like nitrogen or phosphorus entering the water during a given time period, such as tons of nitrogen per year, or pounds of phosphorus per day. Nutrients may enter into the water from runoff, ground water recharge, point source discharges, or the air particles.
Improved water habitats for the human recreation does not occur in an aquatic ecosystem as a result of nutrient loading.
Therefore, the correct option is D.
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Which organisms utilize cellular respiration for energy production?
A. Prokaryotic Cells
B. Eukaryotic Cells
C. Both Prokaryotic and Eukaryotic Cells
D. Only Animal Cells
In North America, many top predators, such as wolves, have been driven nearly to extinction. What effect do you think this has on their main prey, deer? Write your answer below, and discuss with your classmates.
Extinction refers to the elimination of species or groups of organisms due to human-made causes or natural events.
In North America, animals or predators such as wolves have been extinct that can affect the food chain and their prey.
The wolves in North America grew in number to such an extent that government and wildlife agencies developed the rules and regulations to hunt down and kill the wolves, which led them to near extinction.
Wolves feed or attack the deer and are a type of parasitism relationship. In this relationship, wolves are benefitted and deer are harmed.
The extinction of wolves will be led to an increase in the deer population, as deers are the prey and will have no fear from the wolves.
Thus, the deer population will increase in number.
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50 points please help
Answer:
h2N in P--O
Explanation:
youre welcome :3
Answer:
h2N in P-OExplanation:
Please give brainiest
Variation within organisms in a species increases the chance that a species will survive changing conditions. What kind of reproduction produces the most variation with species?
A) parthenogenesis
B) sexual reproduction
C) asexual reproduction
D) budding
Answer:
Sexual reproduction
Explanation:
please mark as brainlist answers
Why id evaporation considered to be an endothermic process?
A) Heat is being released to change the substance from a liquid to a gas
B) Heat is being absorbed to change the substance from a liquid to a gas
C) Heat is being released to change the substance from a gas to a liquid
Answer:
B
Explanation:
All endothermic reactions need added energy and the phase is going from liquid to gas.
is there an edge to the universe?
Answer:
And although our observable universe has an edge, the universe as a whole is infinite and has no edge. ... Many galaxies are so far away from the earth that the expansion of the universe causes them to recede from the earth at a speed faster than light.
Explanation:
Hope This Helps Friend!
Answer: The universe as a whole is infinite and has no edge. Many galaxies are so far away from the earth that the expansion of the universe causes them to recede from the earth at a speed faster than light.
When we place a teabag in hot water, the water takes on a brownish colour. Explain which process has taken place.
Answer:
diffusion
Explanation:
the particles form the tea are moving from an area of high concentration of tea to a low concentration of tea. If you want to be even more speficic this is osmosis; the diuffuion of partcles in water
hope this helps :)
What sort of environment (hypotonic, hypertonic, isotonic) did the extra fertilizer create around the
roots of the corn?
. Keeping in mind your answer to the previous question, what do you believe caused the corn plants to
wilt and eventually die?
. If Michael’s mistake had been caught earlier, is there anything that could have been done to prevent the
corn from dying?
. Generally, people water their plants with % H2O—no solutes added. What sort of environment
does this create around the roots of the plant?
. Briefly explain why plants generally thrive in this sort of environment.
"Osmosis Is Serious Business!" by Troy R. Nash Page
please this is on a test.
Answer:
Follows are the solution to this question:
Explanation:
The hypertonic condition was dependent on potassium and phosphorous fertilizer. Water movements from low to high concentration Water leave cells. Disposal of environmental fertilizers Water supply to crops is growing. Helps to create a hypotonic conditions affects the plants can be used for water. Trees contain the majority of the water perfectly for the growth of plants.Cause-effect relationship
1.Water cycle and Air temperature
2.Habitad and Biodiversity
3.Water temperature and Ocean circulation
4.Greenhouse and Agricultural activities
Answer:
I m not sure how to make this work for you husband and my husband and my wife and
Which example illustrates adhesion?
O water droplets sticking to a window
O water forming a large drop
O water evaporating from a leaf
O water falling from the sky
Answer:
The answer is Water droplets sticking to a window.
Which statements describe the Sun? Check all that apply.
Answer:
the sun is big and there is many layer and the surface of the sun is 5.500 hot
Answer:
i already did the assignment and those are the answsers
which of the following is an example of how biogeochemical cycles are important to sustaining life?
a. oxygen atoms are converted into carbon atoms during respiration
b. the atoms in water molecules are destroyed during a drought
c. new carbon atoms are created during the carbon cycle
d. nitrogen waste from an organism is converted into usable nutrients for others
Answer:
Nitrogen waste from an organism is converted into usable nutrients for others.
Explanation:
Elements found in waste produced by some organisms are later recycled via the appropriate biogeochemical cycle.
The statement 'nitrogen waste from an organism is converted into usable nutrients for others' is an example of how biogeochemical cycles (Option d).
The biogeochemical cycles refer to how different element circulates between non-living things (abiotic) and living things (biotic) in an ecosystem.The nitrogen cycle can be defined as the cycle of this element between abiotic and biotic factors in a given ecosystem.This cycle (nitrogen cycle) involves the atmosphere (air), soil, water, plants, animals and bacteria.In conclusion, the statement 'nitrogen waste from an organism is converted into usable nutrients for others' is an example of how biogeochemical cycles (Option d).
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Which way do monsoon winds blow during the summer months?
O toward the land
O counterclockwise
O clockwise
O toward the sea
5 6
7
During the summer the wind blows from the south west so it will blow toward the land.
What is summer?One of the four seasons is summer. The summer months are the warmest of the year. Summer can be the wettest (and rainiest) season in some regions while being a dry season in others.
In regions that are neither too hot nor too cold, there are four distinct seasons. Summer arrives on Earth's north and south poles at diametrically opposed times of the year.
Summer occurs between the months of June and September in the northern hemisphere and between December and March in the southern hemisphere. This is because the south of the Earth always faces away from the Sun while the north always faces the Sun.
Therefore, During the summer the wind blows from the south west so it will blow toward the land.
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Where does a secondary consumer get its food?
Answer:
Secondary consumers get their food from from primary consumers(animals that feed on plants e.g goat) only. Eg of secondary consumers are tigers,lions etc.
Components of Nucleic Acids
1. Phosphate
2. Ribose sugar
3. Deoxyribose sugar
4. Uracil
5. Thymine -
6. Adenine
7. Guanine
8. Cytosine
Which components bond with adenine in a section of double-stranded DNA?
has
A-1, 3, 5, and 6 only
B-3 and 5 only
C-2 and 4 only
D-3, 4, 7, and 8 only
Answer:
Explanation:
A
Taxonomists try to group organisms based on?
A. Size
B. Evolutionary relationships
C. Physical appearance
D. Ecological niche
Answer:
B) Evolutionary relationships
Explanation:
While I don't believe in Evolutionary relationships, taxonomists group organisms based on Evolutionary relationships
What is turgidity? any answer
Answer:
In biology, turgid refers to cells or tissues that are swollen from water uptake. Many cell types in many different organisms can become turgid due to water uptake.Plant cells, in contrast to animal cells, are almost always turgid due to the action of a large vacuole in each of their cells.
Explanation:
Answer: definition :swollen and distended or congested.
Explanation:
Small insects can walk across the surface of calm water.
Their feet push the surface of the water down slightly,
somewhat like a person walking across a trampoline, but
they do not break the surface. What is the best
explanation for why this happens?
A. The insects are light enough so that they do not break the hydrogen bonds holding the water molecules
B. The insects actually use their wings to hover slightly above the waters surface and they only skim it with their feet
C. The insects feet are non- polar so they are repelled by the polar water molecules and are pushed away from the waters surface
D. The insects are small enough to see the individual water molecules so they are able to step carefully from one molecule to the next
Answer:
A. Insects are light enough so that they do not break the h bonds holding the water molecules together
Explanation:
The insects are light enough so that they do not break the hydrogen bonds holding the water molecules when they walk across the surface of calm water their feet push the surface of the water down slightly and it is due to surface tension.Thus, option A is correct.
What is surface tension?Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible.
Surface tension is responsible for the shape of liquid droplets and the surface tension of water is about 72 mN/m at room temperature.
Water has a tremendous amount of surface tension due to which small mass distributed effectively on its surface.
Surface tension is represented by the symbol T.
Therefore,the insects are light enough so that they do not break the hydrogen bonds holding the water molecules when they walk across the surface of calm water their feet push the surface of the water down slightly and it is due to surface tension.Thus, option A is correct.
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The stems and fruits of pineapple plants contain a group of protein-digesting enzymes collectively
called bromelain and often used as an antibrowning agent for fruits and vegetables. Fruits and
vegetables brown when they are bruised during transport or sliced and exposed to air. This browning is
controlled by enzymatic pathways that produce brown pigments. The browning of fruits and vegetables
reduces the nutritional value of the food, so antibrowning agents such as bromelain are used.
Answer:
c
Explanation: