Answers
Answer:
This approach is a technique used to appraise the environmental impact associated with all stages of a product's life. (from raw material extraction through materials processing, manufacture, distribution, use, repair and maintenance, and disposal-recycling).
Explanation:
Everything that is produced goes through these five main stages:
1.) material extraction
2.) manufacturing
3.) packaging
4.) transportation
5.) use and end of life
At each of these stages, there are inputs and outputs, flow-throughs, value losses, and potential gains.
Related Questions
PLEASE HELP!!!
What characteristics describe the solutes in the NaCl solutions in this activity?
Select all that apply:
-small
-large
-non-polar
-polar
-ionic/charged
(Select two)
Answers
Answer:
i think is
1.polar(because salt dissolves in water )
2.ionic/charged (salts are ionic compounds)
Explanation:
NaCl is salt
What could Mendel conclude?
Answers
What does the cell do when not in the mitotic phase?
Answers
A cell is in the interphase when it is not in the mitotic phase. The three stages of interphase—G1, S, and G2—are the time between cell divisions in the cell cycle. The cell is actively growing and carrying out its regular functions when in interphase.
The cell is preparing for DNA synthesis, which will take place during the S phase, and during the G1 phase. The cell creates DNA during the S phase, the genetic material that contains the instructions required to create and maintain the cell.
The cell enters the G2 phase following the S phase, where it finishes making all necessary preparations for cell division. The cell grows and develops during the interphase, and it is also during this time that any possible DNA damage can be repaired.
When a cell is prepared to divide, it moves into the mitotic phase, where it divides into two daughter cells.
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A land snail, a clam, and an octopus all share this body structure:Question 22 options:gillsmuscular foot segmented bodies jointed appendages
Answers
As we know snails, clams and octopus are mollusks, and mollusks are characterized by three main characteristics a radula a feeding organ, a calcareous shell, and a muscular foot, so we can say that the correct answer is the second option.
Which statement about the nucleus of a cell is NOT true?
Answers
Answer:
Hey mate....
Explanation:
This is ur answer....
C) The nucleus is the site of protein assembly.Hope it helps!
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Which of the following is a benefit of direct air capture technology?
O Moves carbon into the
atmosphere
O Provide carbon dioxide to crops in greenhouses
O Releasing carbon dioxide over the ozone layer
OUsing new fossil fuels for energy
Answers
The benefit of direct air capture technology is the ability to remove carbon dioxide from the atmosphere.
What does carbon dioxide do to the atmosphere?It causes a greater incidence of solar rays on the surface of the planet.It corrupts the ozone layer.Carbon dioxide is absorbed by plants during the photosynthesis process and this is important to keep the atmosphere free of this compound, but with the advancement of the use of fossil energies and intense deforestation, this compound accumulates in the atmosphere and causes various environmental problems, for this reason, using direct air capture technology can be beneficial to remove carbon dioxide from the atmosphere.
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Consider different ways to count cells. Match up the categories or examples of approaches with the most appropriate descriptions.Direct microscopic count/Flow cytometer/Plate count/Membrane filtration/Most probable numberA statistical estimation rather than a precise measurment of cell numbers/Good for concentrating dilute samples of cells/Time-consuming but technically simple, counts living cells only/Rapid, involves a thin chamber that holds a known volume atop a microscopic grid/Detects the scatter of a laser beam as bacteria pass through a narrow channe
Answers
Match up for the categories or examples of approaches with the most appropriate descriptions:
Direct microscopic count: Time-consuming but technically simple, counts living cells only
Flow cytometer: Rapid, involves a thin chamber that holds a known volume atop a microscopic grid, Detects the scatter of a laser beam as bacteria pass through a narrow channel
Plate count: Good for concentrating dilute samples of cells, Time-consuming but technically simple, counts living cells only
Membrane filtration: Rapid, Detects the scatter of a laser beam as bacteria pass through a narrow channel
Most probable number: A statistical estimation rather than a precise measurement of cell numbers
What is cell?In biology, the smallest unit that can exist on its own and is made up of all living creatures and bodily tissues. A cell is made up of three major components: the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the cell and regulates the molecules that enter and exit the cell. Robert Hooke discovered the cell, the smallest functional unit of life, in 1665. A cell can undertake all of the tasks required to sustain life on its own. As a result, the cell is the fundamental unit of life. Plant cells and animal cells are the two types of cells.
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Compare and contrast a fossil with a trace fossil
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Definition:
- Fossil: A fossil refers to the preserved remains or traces of organisms that lived in the past. It can include the hard parts of plants or animals, such as bones, shells, teeth, or wood.
- Trace Fossil: A trace fossil, also known as an ichnofossil, refers to indirect evidence of prehistoric life activities, such as footprints, burrows, tracks, trails, or even feces (coprolites).
Formation:
- Fossil: Fossils form when the remains or hard parts of organisms are buried in sediment or other materials, undergo mineralization over time, and become preserved.
- Trace Fossil: Trace fossils form when an organism's activity or behavior, rather than the organism itself, creates an impression or trace that is preserved in the geological record.
Information Provided:
- Fossil: Fossils can provide direct information about the physical characteristics, anatomy, and structure of ancient organisms. They can offer insights into their evolutionary relationships, adaptations, and paleoenvironments.
- Trace Fossil: Trace fossils provide indirect information about the behavior, locomotion, feeding habits, and ecological interactions of ancient organisms. They can reveal details about their movement patterns, burrowing behavior, or group activities.
Preservation:
- Fossil: Fossils typically require specific conditions for preservation, such as rapid burial, anoxic environments, or mineral-rich sediment. They are often preserved in sedimentary rocks, amber, or ice.
- Trace Fossil: Trace fossils can form in various types of sediments, including mud, sand, or volcanic ash. They can also occur in hardened substrates like limestone or volcanic rock.
Types and Examples:
- Fossil: Examples of fossils include bones, teeth, shells, petrified wood, and preserved soft tissues like feathers or leaves.
- Trace Fossil: Examples of trace fossils include footprints, tracks, burrows, nests, feeding traces, or coprolites (fossilized feces).
In summary, a fossil refers to the preserved remains or traces of organisms themselves, providing direct information about their physical characteristics. On the other hand, a trace fossil refers to indirect evidence of prehistoric life activities, offering insights into behaviors, locomotion, and ecological interactions. Both types of fossils contribute to our understanding of ancient life forms and ecosystems, but through different perspectives and types of evidence.
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How do ATP and NAPDH connect light-dependent and light-independent reactions in photosynthesis
Answers
ATP and NADPH serve as key molecules that connect the light-dependent and light-independent reactions in photosynthesis. They play crucial roles in transferring energy and reducing power between the two processes, ensuring the overall efficiency of photosynthesis.
1. Light-Dependent Reactions: These reactions occur in the thylakoid membranes of the chloroplasts and convert light energy into chemical energy. During this process, light energy is absorbed by chlorophyll and other pigments, leading to the generation of ATP and NADPH.
2. ATP Generation: The absorbed light energy is used to power the electron transport chain, which pumps protons across the thylakoid membrane, creating a proton gradient. The flow of protons back across the membrane through ATP synthase generates ATP from ADP and inorganic phosphate.
3. NADPH Generation: Simultaneously, the energized electrons from the electron transport chain are transferred to NADP+, reducing it to NADPH. This process requires the input of high-energy electrons and protons.
4. Light-Independent Reactions (Calvin Cycle): ATP and NADPH generated during the light-dependent reactions are utilized in the stroma of the chloroplasts to fuel the Calvin cycle. Here, carbon dioxide is fixed and converted into glucose through a series of enzymatic reactions.
5. ATP Utilization: ATP provides the necessary energy to power the various enzyme-catalyzed reactions in the Calvin cycle. It is used to drive the carboxylation of ribulose bisphosphate (RuBP), the regeneration of RuBP, and other key steps in the cycle.
6. NADPH Utilization: NADPH functions as a reducing agent in the Calvin cycle, providing the necessary high-energy electrons to convert carbon dioxide into glucose. It acts as a source of electrons in the reduction of 3-phosphoglycerate to glyceraldehyde 3-phosphate (G3P).
7. Recycling of ADP, NADP+, and Pi: As ATP is hydrolyzed to ADP and inorganic phosphate (Pi) during the Calvin cycle, ADP and Pi are regenerated in the light-dependent reactions. Similarly, NADP+ is regenerated from NADPH.
8. Continuous Cycle: The production of ATP and NADPH in the light-dependent reactions and their utilization in the light-independent reactions create a continuous cycle, ensuring the flow of energy and reducing power required for photosynthesis.
In summary, ATP and NADPH act as energy and reducing power carriers, respectively, connecting the light-dependent reactions that capture light energy with the light-independent reactions that utilize this energy to produce glucose. Their continuous generation and utilization ensure the efficiency and functionality of photosynthesis.
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For the cloning lab, you processed two tubes, one with the plasmid (+pGLO), one without the plasmid (-pGLO). The solutions were then plated on the LB, LB/amp and LB/amp/ara plates. The (+pGLO) on LB/amp served as a(an)
Answers
In the cloning lab, one processed two tubes, one with the plasmid (+pGLO) and one without the plasmid (-pGLO), and the (+pGLO) on LB/amp served as the experimental plate where the gene glows ,so the option c is correct.
What is the significance of the (+pGLO) tube?The +pGLO tube contains bacteria transformed with the pGLO plasmid that have a gene for antibiotic resistance and a gene for fluorescence, so the bacteria on the LB/amp/ara plate serve as a control, and based on the control, sensitive and resistant bacteria are differentiated.
Hence, in the cloning lab, one processed two tubes, one with the plasmid (+pGLO) and one without the plasmid (-pGLO), and the (+pGLO) on LB/amp served as the experimental plate where the gene glows ,so the option c is correct.
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The question is incomplete, the complete question is the below,
For the cloning lab, you processed two tubes, one with the plasmid (+pGLO), one without the plasmid (-pGLO). The solutions were then plated on the LB, LB/amp and LB/amp/ara plates. The (+pGLO) on LB/amp/ara served as a(an) ________________________
Group of answer choices
a) control to see if transformation worked and bacteria are now antibiotic-resistant
b) control to see if bacteria survived the process of transformation
c) the experimental plate where the gene glows
d) the experimental plate where the gene of interest is expressed
Explain how an HAB outbreak can have a devastating economic
impact
Answers
A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes S^AS^A S^AS^B and S^BS^B respectively in a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4
Answers
Populations in Hardy-Weinberg equilibrium express the same allelic and genotypic frequencies through generations. Number of individuals expressing each phenotype: 63 sheep S^AS^A, 84 sheep S^AS^B, 28 sheep S^BS^B.
What is Hardy-Weinberg equilibrium?The Hardy-Weinberg equilibrium theory states that allelic and genotypic frequencies in populations that is in equilibrium remain the same through generations. No evolutive forces are acting on these populations, so no evolution occurs.
Assuming a diallelic gene,
Allelic frequencies
The frequency of the dominant allele f(X) is pThe frequency of the recessive allele f(x) is qGenotypic frequencies
p² (Homozygous dominant genotypic frequency), 2pq (Heterozygous genotypic frequency), q² (Homozygous recessive genotypic frequency).The addition of the allelic frequencies equals 1
p + q = 1.
The sum of genotypic frequencies equals 1
p² + 2pq + q² = 1
In the exposed example,
Alleles Frequencies
S^A f(S^A) = p = 0.6S^B f(S^B) = p = 0.4Genotypes
S^AS^A ⇒ homozygousS^AS^B ⇒ heterozygousS^BS^B ⇒ homozygousWe need to get the number of animals expressing each genotype and phenotype. To do it, we just need to use allelic frequencies and calculate genotypic frequencies (p², 2pq, and q²), and then multiply these values by the total number of animals (N = 175).
Genotypic and Phenotypic frequencies
F(S^AS^A) = p² = 0.6² = 0.36
F(S^AS^B) = 2pq = 2 x 0.6 x 0.4 = 0.48
F(S^BS^B) = q² = 0.4² = 0.16
Number of individuals expressing each phenotype
S^AS^A ⇒ 0.36 x 175 = 63 individualsS^AS^B ⇒ 0.48 x 175 = 84 individualsS^BS^B ⇒ 0.16 x 175 = 28 individualsYou can learn more about the Hardy-Weinberg equilibrium at
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Complete question
A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes
S^AS^A S^AS^B and S^BS^BIn a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4.
Using the hardy weinberg equation calculate the number of sheep with each phenotypes in the flock show your working
anaerobic exercise examples
Answers
Explanation:
Anaerobic exercises include high-intensity interval training (HIIT), weight lifting, circuit training, Pilates, yoga, and other forms of strength training.
The best definition for a fossil is:A. Something very oldB. The remains of organisms that lived millions of years agoC. The remains of an organism that just diedD. An artifact from an ancient society
Answers
Answer
B. The remains of organisms that lived millions of years ago
Explanation
Fossil is a trace of plant or animal that lived long time ago, if the organism just died it is not immediately called a fossil, so C is incorrect. Fossil is remains from organisms not everything, therefore A is incorrect. Artifacts include tools, clothing, and decorations made by people, therefore D is incorrect. The correct answer is B.
How to stop Direct Harvesting
Answers
Direct harvesting can be stopped by making stringent laws and follow them, by maintaining the biosphere reserves and also harvest species in a limited number in an environment.
What is direct harvesting?
Direct harvesting can be referred to take a species out of it's natural environment. We need to directly harvest various organisms for resources that support our population growth and maintenance. However, direct harvesting such as overfishing and the use of drift nets has threatened the aquatic biodiversity on a large scale. Likewise, we have also hunted and poached endangered animals to the point of near extinction.
Direct harvesting can be stopped by controlling fishing by making strict laws and apply them. We can also restrict the entry of people in the areas where large population of animals are present as reserve areas.
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This is my questions tht I’m struggling on
Answers
Answer:
Explanation:
1. connects the internal reproductive organs to the exterior, etc.
vagina = female urethra = male
2. functions as the sex cells or gametes
egg = female sperm = male
3. the site where gametes are produced
ovary = female testis = male
4. functions to transport the gametes from the site of production...
fallopian tubes = female vas deferens = male
Explain what traits you would give a pathogen if you wanted to make it hard for a vaccine to be used. List at least 4 things help please
Answers
Answer:
Here are four traits that would make it hard for a vaccine to be used:
1. Rapid mutation rate. If a pathogen mutates rapidly, it will be able to evade the immune system's defenses, including the antibodies produced by a vaccine. This is a particular problem with viruses, which can mutate very quickly.
2. Ability to evade the immune system. Some pathogens are able to evade the immune system by hiding inside cells or by changing their surface proteins so that they are no longer recognized by the immune system. This makes it difficult for the immune system to mount an effective response to the infection.
3. Ability to spread easily. If a pathogen is easily spread from person to person, it will be more difficult to prevent infection through vaccination. This is a particular problem with respiratory viruses, which can be spread through coughing and sneezing.
4. Lack of animal reservoirs. If a pathogen does not have animal reservoirs, it will be more difficult to develop a vaccine against it. This is because vaccines are typically developed using weakened or killed versions of the pathogen. If there are no animal reservoirs, there will be no source of the pathogen to use for vaccine development.
It is important to note that these are just a few of the traits that can make it difficult to develop a vaccine against a pathogen. There are many other factors that can contribute to the difficulty of vaccine development, such as the cost of vaccine development, the availability of funding, and the political will to support vaccine development.
1. Which of these can be found in RNA but not DNA?
ribose sugar
helical structure
adenine
phosphate group
Answers
Answer:
ribose sugar
Explanation:
A car starts from rest and gains a velocity of 20 m/s in 10 s. Calculate acceleration and average velocity.
Answers
The acceleration of the car is 2 m/s².
The average velocity of the car is 2 m/s.
How to calculate acceleration ?The equation acceleration = (final velocity - beginning velocity) / time can be used.
Given:
Initial velocity (u) = 0 m/s (since the car starts from rest)
Final velocity (v) = 20 m/s
Time (t) = 10 s
Using the formula, we can substitute the values:
acceleration = (20 m/s - 0 m/s) / 10 s
acceleration = 20 m/s / 10 s
acceleration = 2 m/s²
Therefore, the acceleration of the car is 2 m/s².
You can use the following equation to determine the average velocity: average velocity = total displacement / total time.
The initial position and the final position are identical since the automobile begins at rest. As a result, the displacement and the ultimate position are equal.
Given:
Displacement = 20 m
Time (t) = 10 s
Using the formula, we can substitute the values:
average velocity = 20 m / 10 s
average velocity = 2 m/s
Therefore, the average velocity of the car is 2 m/s.
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HELP PLSSSSSSSS PLS PLS PSL
Answers
Good luck!
NEED HELPP ASAP
Which of these is the best explanation for why the rock on the ocean floor and the rock on the continent are
NOT the same age?
There has been a lot of erosion on the continent and the older rock has been washed away.
There has been a lot of erosion on the ocean floor and the older rock has washed away.
Due to the movement of the plates, the rocks that make up the ocean floor are pulled inside the earth
more often and are much younger.
Answers
Answer:The continental crust is less dense so the oceanic crust subducts back to the mantle. This process explains why the younger rocks are found on the ocean floor. 24.
Explanation:
Offer a possible explanation why even identical twins are not exactly alike.
Answers
Answer:
Because identical twins are an example of sexual reproduction, which provides different looking offspring
Explanation:
Organisms that are birthed of asexual reproduction are always exactly identical
A bacterium called Salmonella can cause
food poisoning.which kingdom is it in?
Answers
Answer:
monera kingdom
Explanation:
Answer:
The kingdom is Monera Kingdom
Explanation:
To what element does Thorium-230 (atomic number-90) decay when it emits an alpha particle (42He)? a. 22688Ra c. 22886Rn b. 23090Ra d. 22286Rn
Answers
Answer:
Option A
Explanation:
Thorium-230 decays to Radium-226 also emitting an \(\alpha\) particle.
The reaction is as follows:
\(^{230}Th\) => \(^{226} Ra + ^{4} He\) (Alpha-particle)
What kind of molecule is formed when many disaccharide molecules are combined
Answers
Answer:
Starch Molecule
I think that I did these wrong. Is there anyone that can clarify if they are right?
Answers
For four it should be there are no carriers because they were affected(female)
Sea anemones are predatory invertebrates with stinging tentacles that can paralyze many sea animals. The clownfish is immune to the sting of the sea anemone and actually lives among its tentacles. The relationship is mutually beneficial—the clownfish often lures meat-eating animals over to the anemone, and the anemone benefits from the meal. The clownfish often gets to eat leftovers from the anemone’s meal.
When the clown fish is ready to lay eggs, it lays them near a sea anemone. How’s this a reproductive strategy?
Answers
The clownfish's reproductive strategy of laying eggs near a sea anemone is a form of protection and survival for its offspring.
By laying their eggs in close proximity to the sea anemone, the clownfish provide their eggs with a safe place to develop. The sea anemone's tentacles are a powerful defense mechanism that can fend off potential predators that may try to harm or eat the eggs.
In addition to protection, the clownfish also benefit from the relationship with the sea anemone during the reproductive process. The anemone provides a clean surface on which the eggs can be attached and also helps to oxygenate the surrounding water, which is important for the development of the eggs.
The anemone's tentacles also help to keep the eggs free of harmful parasites and fungi. Overall, the clownfish's reproductive strategy of laying eggs near a sea anemone is a mutually beneficial relationship that helps to ensure the survival of the clownfish offspring.
The protection and benefits provided by the sea anemone help to increase the chances of the eggs hatching successfully, resulting in a higher survival rate for the next generation of clownfish.
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what macromolecule can be found in a virus ?
Answers
Answer:
HOPE IT HELPS -
Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein. The simplest viruses contain only enough RNA or DNA to encode four proteins
Member of which kingdoms are capable of conducting photosynthesis?
Answers
Describe how changes in the lining shown in the diagram adapt it for its function if an egg is fertilised
Answers
Answer:
The lining in the womb becomes thicker and spongy to protect the embryo/foetus in all stages of life inside the womb and to stop damage/harm coming to it
Explanation: