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Radioactive dating is important at it helps in providing evidence for evolution because it tells you when the animal that made a fossil was alive. The correct option is D.
What are the radioactive dating?Radioactive dating is a technique for dating rocks and minerals that makes use of radioactive isotopes.
This method is useful for igneous and metamorphic rocks that cannot be dated using the sedimentary stratigraphic correlation method. There are over 300 naturally occurring isotopes known.
Scientists use slow-decaying elements such as uranium and potassium to date igneous rock.
They can determine the age of the sedimentary layer in which the fossils occur by dating the surrounding layers. This is known as "bracketing" the age of the sedimentary layer within which the fossils occur.
Thus, the correct option is D.
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Related Questions
1. when investigating genes that play a role in the development of the sensory nervous system, it is discovered that a gene known as sense1 is active at higher levels in the embryos of cave crayfish than in embryos of surface crayfish. when the level of activity of sense1 is artificially increased in embryos of surface crayfish they develop without eyes and with long antennae. of the following hypotheses, which best explains how cave crayfish have lost their eyes? a. in the cave population, the sense1 gene appeared, causing crayfish to lose their eyes and improve their sense of smell. b. in the cave population, mutations in sense1 that increased its activity appeared repeatedly and more frequently over time. c. in the cave population, a mutation that increased the activity of sense1 became more frequent in cave crayfish over time because it also improved sense of smell. d. in the cave population, crayfish lost their eyes over time because they did not use them.
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The best explanation for the loss of eyes in cave crayfish is option C: "A mutation increasing the activity of the sense1 gene became more frequent in cave crayfish over time, improving their sense of smell."
"In the cave population, a mutation that increased the activity of sense1 became more frequent in cave crayfish over time because it also improved the sense of smell." This hypothesis suggests that a mutation occurred in the sense1 gene in the cave crayfish population, leading to an increase in its activity. This mutation was advantageous because it improved the sense of smell, which is crucial for survival in the dark cave environment.
The explanation for this hypothesis lies in the observation that cave crayfish have higher levels of sense1 gene activity compared to surface crayfish. When the activity of sense1 was artificially increased in surface crayfish embryos, it resulted in the loss of eyes and the development of long antennae. This suggests that the sense1 gene plays a role in eye development and is involved in the morphological differences between cave and surface crayfish.
The repeated occurrence and increased frequency of the mutation in the cave crayfish population over time support this hypothesis. As cave crayfish with increased sense1 activity had a survival advantage in the dark cave environment, they were more likely to pass on this mutation to future generations. Over time, this led to an accumulation of the mutation, resulting in the loss of eyes in the cave crayfish population.
The study of cave crayfish and the role of the sense1 gene in eye loss and enhanced sense of smell provides valuable insights into evolutionary adaptations in response to specific environmental conditions. Understanding the genetic basis of these adaptations can shed light on the mechanisms underlying sensory development and the processes of natural selection.
Further research and investigation into the specific molecular mechanisms controlled by the sense1 gene could deepen our understanding of sensory system development and the evolutionary changes that occur in response to different ecological niches.
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Which describes the polarity in a water molecule?
Marie
O partial negative charge on the orygen atom because its electrons are pulled toward the hydrogen atoms
partial negative charge on the orygen atom because it pulls electrons from the hydrogen atoms
o partial positive charge on the arygen atom because it pulls electrons from the hydrogen atoms
O partial positive charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms
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Answer:
the answer for this question is b
Explanation:
The partial negative charge on the oxygen atom, because it pulls electrons from the hydrogen atoms, describes the polarity in the water molecule.
What do you mean by polarity?In chemistry, polarity is the difference in electric charge that results in a molecule or its chemical groups having an electric dipole moment, a negatively charged end and a positively charged end.
For example, the carbon-oxygen bonds in carbon dioxide are both polar, with the carbon atom having a partial positive charge and the more electronegative oxygen atom having a partial negative charge.
Polarity is when an entity contains two separate and opposite poles that can either attract or repel each other. The term is often used in electricity, magnetism, chemistry, and electronic signaling to describe the flow of electrons.
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if you were on a taxiway approaching or leading to runway 22, which sign would you see?
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If you were on a taxiway approaching or leading to runway 22, you would see a sign with the number "22" on it, which is called a runway designation sign.
The sign would also likely include additional information, such as the runway's magnetic heading and its length in feet or meters. The runway designation sign is typically located near the entrance to the runway, at the intersection of the runway and the taxiway.
It helps pilots to identify the correct runway and to confirm that they are lined up with the correct heading. Runway designation signs are standardized and use a combination of numbers and letters to indicate the runway's magnetic heading, rounded to the nearest 10 degrees, and its position relative to other runways at the same airport.
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Does a common cold have a localized inflammatory response
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In the common cold we can say that there is a localized inflammatory response as is focused on the airways, rarely gets to the bronchi or lungs, this happens when there are complications, even more, when complications occur, these are contained in the respiratory system.
why a termeric stain on a white shirt is turned to red when it is washed with soap
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Answer:
Curry contains turmeric powder and soap is basic in nature. ... Hence, when soap (which is basic in nature) is scrubbed on the stain, the stain turns red. When the cloth is washed with plenty of water, the soap is removed and the yellow colour of the stain reappears.
Explanation:
reviewing Meiosis:
1. Draw a diagram depicting the process if crossing over.
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Answer:
I attached a diagram I found online. This one is a bit more general. If you want me to include the PMAT part of meiosis, then just ask.
how do evolutionary forces reconstruct evolutionary relationships among populations. you may first mention what evolutionary forces are, then explain your reasoning through examples (you can focus on 2 different adaptations).
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The fossil record of humans is diverse and may contain several different species, according to recent paleoanthropological discoveries. Although genetic drift is probably the main cause of facial diversification in the genus Homo, late Pliocene selection may have had a significant impact on the diversification of facial morphology in hominins.
What does evolutionary force mean?Evolution occurs through a combination of mechanisms: Mutation, gene drift, gene flow, natural selection. These mechanisms have been termed 'evolutionary forces' and are likely responsible for all the genotypic changes observed in today's world.
What is adaptive evolution and its examples?Adaptive evolution refers to evolutionary changes that make an organism suitable for its habitat. This change increases their chances of survival and reproduction. This change allows each organism to adapt to its environment. Examples include:The long neck of treetop-fed giraffes, the streamlined bodies of aquatic fish and mammals, the light bones of flying birds and mammals, and the long, dagger-like canines of carnivores. All biologists agree that the traits of an organism generally reflect adaptation.Some organisms, like leafy dragonfish (Phycodurus eques), have evolved adaptations to blend into their environment (in this case, algae) to avoid the attention of hungry predators.To learn more about evolutionary adaptation visit:
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_____ allow us to quickly categorize new objects and events with little cognitive effort.
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Schemas allow us to quickly categorize new objects and events with little cognitive effort.A schema is a mental framework or concept that helps us organize and interpret information about the world.
It is a cognitive structure that contains knowledge, beliefs, and expectations about a particular topic or domain. Schemas allow us to efficiently process new information by using pre-existing knowledge and mental shortcuts.
When encountering new objects or events, our schemas help us categorize them based on similarities to existing knowledge and past experiences. This categorization allows us to quickly understand and make sense of the new information without needing to analyze it from scratch.
Schemas enable us to process and interpret the world efficiently by applying general knowledge to specific situations, reducing cognitive effort in the process.
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n eukaryotes, genes that need to be regulated together are bound by the same transcription factor that recognizes the same sequence. therefore, genes that need to be regulated together have the same (select all) a) promoter proximal element sequence b) enhancer sequence c) coding sequence regulatory sequences that are far from the promoter where some transcription factors bind. core promoter- rna polymerase binds
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Similar to prokaryotic cells, eukaryotes need an RNA polymerase to bind to a DNA sequence upstream of a gene in order to start transcription of that gene.
To facilitate transcription start, the eukaryotes RNA polymerase needs additional proteins, or transcription factors, in contrast to prokaryotic organisms. In eukaryotic cells, RNA polymerase cannot start transcription on its own. Eukaryotic transcription is regulated by two different categories of transcription factors: To help RNA polymerase bind to the core promoter region, general (or basal) transcription factors attach to the area. Specific transcription factors interact with the proteins at the core promoter by binding to different locations outside of the region of the core promoter and enhancing or suppressing the activity of the polymerase.
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which molecule combines with proteins to form both the large and small ribosomal subunits? a)dna b)rna polymerase c)mirna d)rrna e)trna
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The molecule that combines with proteins to form both the large and small ribosomal subunits is rRNA (option D).
What is ribosomal RNA?Ribosomal RNA is the structural backbone of ribosomes, which is composed of RNA (ribonucleic acid).
Molecules of rRNA are synthesized in a specialized region of the cell nucleus called nucleolus, which contains the genes that encode rRNA.
Each ribosome contains at least one large rRNA and at least one small rRNA. In the nucleolus, the large and small rRNAs combine with ribosomal proteins to form the large and small subunits of the ribosome.
Therefore, it can be said that ribosomal RNA combines with proteins in the nucleus to form the small and large ribosomal subunits.
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How can a model of the solar system be used in planning a trip from Earth to another planet? A To estimate distance, travel time and fuel cost. B To anticipate the frequency and occurrence of meteorites and other objects in space. C To map flight plans that avoid solar flare-ups and solar winds. D To predict possible emergencies astronauts may encounter during space travels.
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Answer:
A.) to estimate distance, travel time and fuel cost
Explanation:
The inheritance patterns in which 50% of the functional protein is sufficient to produce a wild type phenotype.
A. Simple mendelian dominant alleles. B. An X linked dominant allele in heterozygous female. C. Haploinsufficient genes
D. Incomplete dominance
E. A female sex-limited trait in a heteroxyous male
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Haploinsufficient genes (option C) is the inheritance patterns in which 50% of the functional protein is sufficient to produce a wild type phenotype.
What is Haploinsufficiency?Haploinsufficiency is a genetic condition in which an individual has only one functioning copy of a particular gene, instead of the normal two copies (one from each parent). This means that the remaining copy of the gene cannot produce enough of the protein or other product that it normally would with two copies.
Haploinsufficiency can result in a wide range of health problems, depending on which gene is affected and the extent of the deficiency.
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do you think that there is an aesthetic value that could be attached to the hides of the nguni cattle after slaughtering?
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Helpppppppppppppppppppp
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Answer:
B. Comet there ya go ms girl or mr. boy
answer:
Im pretty sure its comet
How do sea otters keep from drifting apart while they sleep.
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Answer:
They hold each other's cute hands!!! :3
Explanation:
Does this help you???
What’s the product of 3 2/3 and 14 2/5
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Answer:
52.8
Explanation:
so make the mixed numbers into improper fractions.
which are 11/4 and 72/5. after that, multiply together by multiplying the numerator and denominator together.
Recently, the number of elks has increased significantly in a forest. These elks often enter the nearby grassland and eat up all the grass. This is indirectly affecting the livestock industry in that area. Which method might solve the nuisance caused by these excess elks in the forest?
A. establishing WMA
B. hunting
C. research
D. habitat manipulation
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Pretty sure the answer is B. Hunting, as this will dwindle the population of elk.
What takes place in the mitochondria matrix?
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Answer:
In the mitochondrion, the matrix is the space within the inner membrane. ... The enzymes in the matrix facilitate reactions responsible for the production of ATP, such as the citric acid cycle, oxidative phosphorylation, oxidation of pyruvate, and the beta oxidation of fatty acids.
Explanation:
In the mitochondrion, the matrix is the space within the inner membrane. ... The enzymes in the matrix facilitate reactions responsible for the production of ATP, such as the citric acid cycle, oxidative phosphorylation, oxidation of pyruvate, and the beta oxidation of fatty acids.
Chromosomes contain most of the cell's which acts as the molecule of heredity. 2. A duplicated chromosome remains tightly paired with its partner at a region called the
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Chromosomes are made up of DNA, and they contain most of the cell's genetic information, which is also known as the molecule of heredity. Chromosomes consist of genes, which are the basic units of heredity. Each chromosome carries a specific set of genes that are responsible for various traits.
Human cells have 23 pairs of chromosomes, which make up a total of 46 chromosomes. Chromosomes must be replicated, or duplicated before cell division can occur. This process ensures that each daughter cell receives an exact copy of the parent cell's genetic material. After replication, each chromosome has two identical sister chromatids connected by a centromere. The centromere is a region on the chromosome where spindle fibers attach during cell division. A duplicated chromosome remains tightly paired with its partner at a region called the centromere. The centromere is responsible for keeping the two sister chromatids together until they are separated during cell division. The centromere is also responsible for ensuring that each daughter cell receives one copy of each chromosome. If the centromere fails to separate properly during cell division, it can lead to chromosomal abnormalities, such as Down syndrome.
Chromosomes are one of the essential parts of cell structure. They carry all the genetic information and pass it from generation to generation. Each chromosome is composed of a single DNA molecule containing numerous genes that carry genetic information from parents to offspring. A typical human has 23 pairs of chromosomes (a total of 46). Chromosomes are replicated or duplicated during the S phase of the cell cycle before cell division. Chromosome duplication is essential for providing the exact genetic information to each daughter cell during mitosis and meiosis. A duplicated chromosome consists of two identical chromatids, which are attached by a centromere.
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what part of motivation describes where you choose to invest your energy?
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The part of motivation that describes where you choose to invest your energy is called goal setting.
Goal setting is a crucial aspect of motivation as it involves determining and prioritizing specific objectives or targets towards which an individual directs their energy and efforts. When setting goals, individuals make conscious decisions about where to invest their time, resources, and energy. By defining clear and meaningful goals, individuals gain a sense of purpose and direction, which fuels their motivation and drives them to take action. Goal setting allows individuals to identify what they want to achieve, whether it's personal, academic, or professional, and helps them channel their energy towards those chosen areas. By aligning their actions with their desired outcomes, individuals are more likely to stay motivated, focused, and persistent in pursuing their chosen objectives.
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The diagram below represents a portion of the Earth's latitude and longitude system. What are the approximate latitude and longitude of point A?
15º S 20º W
15º S 20º E
15º N 20º E
15º N 20º W
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Latitude and longitude are distances in degrees from the Equator and from the Greenwich meridian. Point A is at 15º N 20º W. Option D.
What are latitude and longitude?Latitude and longitude refer to distances in degrees concerning a certain reference point.
Latitude is the distance in degrees, minutes, and seconds of a point from the Equator, which is the principal parallel at 0º. It separates the northern hemisphere from the southern hemisphere. Longitude is the distance in degrees, minutes, and seconds of a point from the Greenwich meridian, which is the principal meridian at 0º. It separates the east from the west.In the exposed example, we can identify the equator (horizontal black line at 0º) and the Greenwich meridian (vertical black line at 0º).
We can also see a point named A located in the northern hemisphere and to the west.
By looking at the degrees, we can say this point is at 15º N 20º W. Option D.
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do mast cells have clathrin
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Mast cells have clathrin.
Clathrin is a protein complex involved in endocytosis and cell signaling, it is found in a variety of cell types, including mast cells. Mast cells are a type of white blood cell that is found throughout the body, they play a crucial role in the body's immune response by releasing various chemicals, such as histamine and cytokines, in response to allergens and other stimuli. Mast cells have many different receptors on their surface that allow them to detect a wide range of signals. These signals can trigger the release of various chemicals from the cell, including histamine and other inflammatory mediators.
Clathrin is a protein complex involved in endocytosis and cell signaling. It is found in a variety of cell types, including mast cells. Endocytosis is a process by which cells take up molecules and particles from their environment.Clathrin is composed of three heavy chains and three light chains, which combine to form a cage-like structure that surrounds and internalizes the target molecule or particle. The internalized cargo is then transported to other parts of the cell or to the cell surface for secretion or recycling.
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1) The most abundant glycoprotein in the extracellular matrix (ECM) is This protein attaches to which are proteins in the plasma membrane that connect the ECM with the inside of the cell. collagen: dyneins microtubules; integrins microfilaments; dynein collagen; integrins 2) Which listed tissue type would you expect to contain a large proportion of anchoring junctions? root tissue skin brain digestive tract tissue
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1) The most abundant glycoprotein in the extracellular matrix (ECM), this protein attaches to integrins, which are proteins in the plasma membrane that connect the ECM with the inside of the cell is A. collagen. 2) The tissue type that would be expected to contain a large proportion of anchoring junctions is C. skin.
Collagen provides structural support to tissues and organs, it forms a network of fibers that give strength and flexibility to the ECM. Integrins act as bridges between the ECM and the cell, allowing cells to sense and respond to their environment, they play a role in cell adhesion, migration, and signaling. Dyneins and microtubules are not directly involved in the attachment of collagen to integrins. Microfilaments are involved in cellular movement and shape changes, but not in the attachment of collagen to integrins. So the correct answer is A. collagen.
Anchoring junctions are specialized cell-cell junctions that help hold cells together and provide mechanical strength. In the skin, anchoring junctions called desmosomes are particularly abundant. They connect adjacent skin cells, called keratinocytes, and contribute to the integrity and stability of the skin. Desmosomes consist of proteins called cadherins, which link cells together, and intermediate filaments, which provide structural support. Root tissue, brain tissue, and digestive tract tissue may contain different types of cell junctions, but they are not primarily characterized by anchoring junctions like the skin, so the correct answer is C. skin.
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Identify how scientists used the scientific method to test this phenomenon.
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Answer:
Scientists used the scientific method of investigation to test this phenomenon. The scientific method consists of these steps:
Make observations: Scientists observed that nerve damage causes severe pain. Scientists knew bone marrow cells seemed to decrease nerve pain, but the reason was unknown.
Ask questions and construct the hypothesis: Would injecting bone marrow cells into the spinal cord decrease pain?
Test the hypothesis: Injected bone marrow cells into the spinal cord of mice that had nerve damage. Observed changes in the cells, and monitored the pain levels in the mice.
Analyze the results and make a conclusion: Determined that the pain decreased because the bone marrow cells released a pain-relieving protein that helps damaged cells.
Test and modify: Make a plan to repeat the test in humans.
Explanation:
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What are consumers or heterotrophs??
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Answer:
HETEROTRPHS:
ORGANISMS WHICH CANNOT PRODUCE THEIR OWN FOOD CANNOT CONVERT INORGANIC MOLECULE TO ORGANIC MOLECULE ON THEIR OWNCANNOT PERFORM PHOTOSYNTHESISCONSUMERS:
CONSUMERS DEPENDS ON FOOD PREPARED BY PRODUCERS(PLANTS)
ALL CONSUMERS ARE HETEROTROPHS
Identify the correct root operation term used in ICD-10-PCS for the following: Spinal fusion cervical C1-C2 1. repair 2. fusion 3. creation 4. arthrodesis
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The correct root operation term used in ICD-10-PCS for the spinal fusion cervical C1-C2 procedure is arthrodesis. (Option 4).
ICD-10-PCS is the International Classification of Diseases, 10th Revision, Procedure Coding System. It is used in the United States to code hospital procedures.ICD-10-PCS has a system of root operations that define the objective of the procedure. The root operation is the third character in the code. In this question, the correct root operation term used in ICD-10-PCS for the spinal fusion cervical C1-C2 procedure is asked.
Spinal fusion cervical C1-C2 is a surgical procedure to stabilize the neck by fusing two vertebrae together. The appropriate root operation term in ICD-10-PCS for this procedure is arthrodesis. Arthrodesis is defined as a surgical procedure to join two bones together permanently to eliminate movement between them. In this case, the surgeon is joining together the C1 and C2 vertebrae to eliminate movement between them.
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Which action is the only way to become sober?
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Avoiding alcohol and other intoxicating substances is the only way to get sober. This is due to the way that alcohol and other intoxicants affect the brain, which results in decreased inhibitions, decreased coordination, and a euphoric mood.
The body grows habituated to these chemicals over time and needs progressively more of them to produce the same results. The person will suffer withdrawal symptoms when these substances are not there as their body gets more and more reliant on them.
The only method to become sober is to abstain from alcohol and other intoxicants since doing so allows the body to revert to its natural state without the presence of these chemicals.
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The trunk is subdivided into two main cavities: the abdominopelvic and the __________.
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The trunk is subdivided into two main cavities: the abdominopelvic and the thoracic cavity. The thoracic cavity is the chest cavity. This cavity is protected by the thoracic cage, which includes the sternum, ribs, and thoracic vertebrae.
The abdominopelvic cavity is the lower cavity of the trunk, which contains the abdominal cavity and the pelvic cavity. The abdominal cavity is located above the pelvic cavity, extending to the diaphragm muscle that separates the abdominal and thoracic cavities.It houses a variety of organs, such as the stomach, liver, pancreas, spleen, small intestine, and most of the large intestine.
The pelvic cavity is inferior to the abdominal cavity and is bounded by the bones of the pelvis.It contains the urinary bladder, reproductive organs, and the rectum. The abdominal and pelvic cavities are continuous with each other at the level of the pelvic brim, which is a boundary that separates the abdominal and pelvic cavities.
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What is used for building structures in the body they can also be enzymes?
(it’s either lipids or carbohydrates) WILL GIVE BRAINLIEST
Answers
Answer:
The correct answer is - proteins.
Explanation:
Enzymes are made up of the long chains of amino acids that are linked by the peptide bonds that make a polypeptide chain known as proteins. Proteins are the building block of the enzyme and the building of thevarious structures in the body.
Enzymes are made up of two protein that also plays as the role of a biological catalyst whereas protein only plays role in forming different structure and performing functions.
Am I right or no? (checking my answer)
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Answer:
Incorrect.
Explanation:
The correct answer is "A. NADH and FADH2"