Answer:
Can not be involved in the production of new RNA
Explanation:
Red blood cells lack a nucleus. No nucleus, no DNA; means it can not divide or repair itself, and therefore also can not produce any RNA. They also are unable to synthesize proteins.
the arch that runs front to back on the inside of the foot is the __________.
Answer:medial longitudina
Explanation:
Linda takes her pet german shepherd to a dog park and sees many different breeds of dogs. What is the term for any difference between individuals of the same species?.
Variation is the term for any difference between individuals of the same species. Correct option (d).
Variation is a phrase used to describe the phenotypic variations seen in members of the same species, such as those found in the many dog breeds. Variation comes in two flavors: hereditary variation and environmental variation.
Environmental variation arises from exposure to various situations in people's surroundings, whereas the first one is caused by the varied genes that are handed down from parents to their kids.
What is a species ?A species is the largest gene pool attainable in the wild in this sense. For instance, although if these spiders with cheerful faces have distinct appearances, they belong to the same species, Theridion grallator, since they may interbreed.
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Full Question: Linda takes her pet German shepherd to a dog park and sees many different breeds of dogs. What is the term for any difference between individuals of the same species?
A. evolution
B. adaptation
C. population
D. variation
indeterminate cleavage is a process that produces embryonic cells that __________.
Indeterminate cleavage is a process that produces embryonic cells that are not determined to become any particular cell type. It is a type of cell division that occurs during the early stages of embryonic development and results in identical cells with the same genetic material.
These cells are not committed to become any particular cell type, but rather they can develop into any type of cell depending on the environmental signals they receive. Indeterminate cleavage is an important process in the formation of a multicellular organism.
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The spinal cord runs down the back from the base of the __________ and ends just below __________ level. A. head . . . chest B. brain . . . waist C. neck . . . hip D. skull . . . stomach Please select the best answer from the choices provided A B C D
Answer:
B
Explanation:
runs down the back from the base of the brain and ends just below the waist
For which of these questionls could a testable hypothesis be developed? Check all that apply.
Do children's heart rates increase at the same speed when walking uphill?
O Is
experimenting with moldy bread more fun than experimenting with yogurt cultures?
D Does temperature affect how long blood can be stored?
How does moisture affect the growth of moss on a tree?
Which of Leeuwenhoek's microscopes was
the coolest?
Done
Intro
A testable hypothesis could be developed for A. Do children's heart rates increase at the same speed when walking uphill, C. Does temperature affect how long blood can be stored?, and D. How does moisture affect the growth of moss on a tree.
What is a testable hypothesis?A testable hypothesis is a given explanation about a scientific question that may be tested by experimental and or observational procedures.
Therefore, with this data, we can see that a testable hypothesis is an explanation about an issue of the real world used to confirm or reject its assumptions.
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Two thermometers are calibrated, one in degrees celsius and the other in degrees fahrenheit. At what temperature (in kelvins) do their readings measure the same temperature?.
Which part of plate tectonics does the movement of food coloring represent?
Answer:
Movement of Lava/Magma
Explanation:
These plates move on a hot, flowing mantle layer called the asthenosphere, which is several hundred kilometres thick. Heat within the asthenosphere creates convection currents (similar to the currents that can be seen if food colouring is added to a heated container of water).
Hope this helps
Suppose the following amino acid chain was created based on a student's transcription and translation:tyr-leu-pro-metin the chain, which data show a possible source of error? explain the error.
Here the error is that The student's transcription and translation produced an incorrect amino acid chain with Met (methionine) in the wrong position.
Because it is the amino acid that is coded for by the translation starts codon, AUG, methionine always appears at the beginning of every chain of amino acids that are obtained through translation.
The process by which the information in a gene's coding DNA is copied to create an RNA molecule called mRNA, which is used in the synthesis of the gene product, such as a protein, is known as transcription. The process by which the ribosomes use the information in the mRNA to make proteins is known as translation.
The ribosome reads the information in mRNA as a triplet of nucleotides called codons. An amino acid is encoded by each codon. Methionine is encoded by the AUG codon, which is the start or initiation codon. As a result, methionine is the first amino acid formed through translation.
Methionine (Met), on the other hand, can be found at the very end of the student-created amino acid chain. As a result, the student might have translated backward to get the amino acid chain he did.
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What does Mendelian genetics study ?
Mendelian genetics is a branch of genetics that studies how traits are inherited in organisms.
Mendelian genetics is named after Gregor Mendel, an Austrian monk who is considered the "father of modern genetics" because of his pioneering work in the field. Mendelian genetics focuses on the inheritance of traits that are determined by a single gene, and how these traits are passed from one generation to the next. It also investigates how different combinations of genes can lead to different traits, and how traits can be influenced by the environment.
One of the key concepts in Mendelian genetics is the gene, which is a unit of hereditary information that is passed from parent to offspring. Genes are made up of DNA, and they are located on chromosomes. Each organism has a unique set of genes, which determines its inherited traits, such as eye color, hair color, and height.
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Resistance training can lead to the conversion of ________ fibers into _____ fibers.
a. type I, type IIx
b. type IIx, type IIa
c. type IIa, type I
d. type IIa, type IIx
b. type IIx, type IIa. Resistance training can lead to the conversion of type IIx fibers into type IIa fibers. Type II fibres experience more exercises (also known as hypertrophy) and have more actin and myosin filaments. As a result, one's capacity to exert power is increased (2).
Muscle fibres of type IIa are fast twitch, which means they fire more quickly. Additionally stronger than type I fibres, they are used for more intense exercises like running and heavy training. Although they offer significant strength, these fibres fatigue more quickly than type I fibres.Type I and type II muscle fibres both become larger after resistance training. As a result, one's capacity to exert power is increased (2).
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What is the best example of biological contamination food handlers?
Answer:
Failure to wash hands properly before handling food.
Explanation:
When a person, prepares or handles food without properly washing their hands or properly sanitizing equipment and surfaces,it can lead to contamination. This can lead to the spread of the illness to others through the contaminated food. It is important for food handlers to practice good hygiene and sanitation to prevent the spread of illness to the food consumers and fellow workers.#spj4
where in the digestive system are protease enzymes secreted?
Answer: In humans, proteases are mainly present in pancreatic juice and gastric secretions to break down dietary proteins. Trypsin and chymotrypsin are secreted by the pancreas and pepsin is secreted by the chief cells in the stomach.
Explanation:
Proteolytic enzymes or proteases catalyze the breakdown of proteins into shorter polypeptides or amino acids. They undergo proteolysis by hydrolyzing peptide bonds. Also, they are involved in various biological functions like protein catabolism, cell signaling and digestion.
Protease is produced in the stomach, pancreas, and small intestine.It is produced in the gastric chief cells of the stomach lining and is one of the main digestive enzymes in the digestive systems of humans and many other animals, where it helps digest the proteins in food. Pepsin is an aspartic protease, using a catalytic aspartate in its active site. Enzymes are secreted from our salivary glands, 1 and then from the cells lining our stomach, pancreas, and large and small intestines. Different types of enzymes are secreted depending on the types of foods that we eat.
Most of the chemical reactions occur in the stomach and small intestine. In the stomach, pepsin is the main digestive enzyme attacking proteins.Proteases enzymes allow for proteolysis, the process that breaks the long, chainlike molecules of proteins so that they can be digested. Proteases are produced by the pancreas, and they are also found in some fruits, bacteria and other microbes
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When using pcr to study dna, the base pairs split and the dna cleaves into single strands. What stage of the process does this most accurately describe?.
When using PCR to study DNA, the base pairs split and the DNA cleaves into single strands. B. denaturalization stage of the process does this most accurately describe.
The polymerase chain reaction is referred to as PCR. In molecular biology, it is a method for making multiple copies of a sample's DNA.
The polymerase chain reaction has the following stages:
Separation of the template into single strands by denaturation.
Annealing primers to each original strand for the purpose of synthesis of new strands
Extension of the primer-derived new DNA strands.
therefore, Denaturation is the stage of PCR that is exemplified by the cleaving of DNA into single strands and the splitting of base pairs.
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(complete question)
When using PCR to study DNA, the base pairs split and the DNA cleaves into single strands. What stage of the process does this MOST accurately describe?
A. annealing
B. denaturalization
C. extension
D. hybridization
Isolated biological membranes can be frozen, then fractured to study the membrane components. When membranes are fractured they tend to break along the middle of the bilayer. In this example, the lipid bilayer sheet would break apart at the hydrophobic tails. What is the best explanation for this observation
When biological membranes are frozen and subsequently shattered, they usually split along the bilayer's center. That is the greatest explanation for this. When the membrane surfaces are frozen, the hydrophilic connections between them are broken.
Biological membranes are made up of a bilayer of lipid molecules that form a double sheet. The phospholipid bilayer is the common name for this structure. Membrane proteins and sugars, in addition to the many types of lipids found in biological membranes, are important structural components.
Membranes that are biological in nature. Similarly, the composition of lipids in biological membranes varies according to organism. For example, the plasma membrane of E. coli is mostly composed of phosphatidylethanolamine (which accounts for 80% of total membrane lipid).
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Which two statements best describe fertilization and meiosis in the life cycle of plants? i. These processes are part of the life cycle. Ii. These processes produce gametophytes. Iii. Fertilization produces a zygote, and meiosis produces haploid spores. Iv. Fertilization is used only by seedless plants; meiosis is used only by seed plants. I and iii i and iv ii and iii ii and iv.
These processes are part of the life cycle and Fertilization is used only by seedless plants; meiosis is used only by seed plants are two statements best describe fertilization and meiosis in the life cycle of plants. Thus correct option (i) and (IV).
What is fertilization in plant life cycle?
Pollen grains (male gametophytes) are carried by the wind to the open end of an ovule, which contains the eggs, or female gametophyte, and this results in fertilization. A pollen tube, which grows from the pollen grain there, finally reaches an archegonian egg cell through the pollen grain.
What is the connection between fertilization and meiosis?Meiosis and fertilization alternate during sexual life cycles. A diploid cell produces haploid cells during meiosis, and two haploid cells (gametes) combine during fertilization to create a diploid zygote.
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A species of plant from Wyoming is artificially introduced to a marsh in New Jersey. It manages to reproduce and maintain a population, and is not disruptive to surrounding plant communities. How should this plant be categorized
This plant should be categorized as an introduced species.
It was introduced to the marsh in New Jersey artificially and is not native to the area.
Complete the equation to explain how the protease caused the colourless
zones to appear.
Answer:
Definition of joints and what help
blank is when humans choose the traits of an organsim
Answer:
Artificial Selection is when humans choose the traits of an organsim
Explanation:
.
Are slow fibers fatigue resistant?
Yes, slow fiber is fatigue resistant because it contains lots of mitochondria and myoglobin.
There are two types of skeletal muscles in the body, one of which is slow-twitch muscle. Slow-twitch muscles are muscles that contract less rapidly and release energy gradually.
Slow fibers, also known as red fibers, are slow-twitch muscle fibers that are more fatigue-resistant. The red color of this muscle is due to the presence of high myoglobin and good vascular supply. Slow fiber is more fatigue resistant because this fiber contains many mitochondria as a source of energy resulting from the breakdown of glucose for energy efficiency. These fibers also focus on sustained, smaller movements and postural control.
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Compare and contrast the functions of each types of flasks: filter, erlenmeyer, volumetric
The Compare and contrast for the functions of each types of flasks: filter, erlenmeyer, volumetric is given below
Filter flasks are designed to hold a filter paper or membrane in place to separate solid particles from a liquid during filtration. They typically have a round bottom, a short neck, and a flat bottom, and are often used in conjunction with a vacuum pump to facilitate the filtration process.Erlenmeyer flasks, also known as conical flasks, have a narrow neck and a conical base. They are used to mix, measure, and hold liquid or solid samples in a laboratory setting. Because of their shape, they are less prone to spilling than other types of flasks, and they can also be easily fitted with a stopper or a cap.Volumetric flasks are used to accurately measure the volume of a liquid. They are designed to hold a specific volume of liquid at a temperature of around 20°C, and are calibrated to be accurate to within a few parts per million. What are the flask about?Filter flasks are typically made of borosilicate glass, which is a type of glass that is resistant to thermal shock and chemical attack. They are available in a range of sizes, from small ones that hold a few milliliters of liquid to large ones that hold several liters.
Therefore, Erlenmeyer flasks are characterized by their narrow neck and conical base, and are typically made of borosilicate glass or plastic.
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Part A
Begin by selecting a freshwater or marine aquatic ecosystem as a model for your food web. Be specific. Choose a specific lake. Or, if you choose an ocean ecosystem, identify its geographical area and depth. Keep in mind that deep-sea organisms live in a completely different environment than surface aquatic organisms.
Next, conduct research on the following conditions in the ecosystem you chose. They influence the types of organisms that can live there.
geographical features
temperature
depth/light availability
salinity
pH
unique features that contribute to the ecosystem, such as other bodies of water that connect to it, unusual chemistry, and climate
Using the information you gathered, write a paragraph that describes conditions in the ecosystem.
Part B
Now conduct research on the types of organisms that live in the ecosystem you chose. Note that quaternary consumers and even tertiary consumers can include land animals that rely on the animals in the aquatic ecosystem for food. Collect information based on these guidelines:
Producers: Identify 2-3 species.
Primary (or first-level) consumers: Identify 2-3 species.
Secondary (or second-level) consumers: Identify 2-3 species.
Tertiary (or third-level) consumers: Identify 2-3 species.
Quaternary (or fourth-level) consumers: Identify 1-2 species.
Write down the species you’ve identified for each consumer level in the ecosystem.
Part C
Using the organisms you identified in part B, create a food web for the ecosystem you chose. Use this sample food web for reference, although your food web will contain fewer organisms. Note that your food web does not have to include images, but you may include them if you choose. However, be sure to include arrows to indicate the direction of energy flow in your food web. Design your food web using any method listed below:
Use drawing or flowchart-building tools in a word-processing program.
Hand draw your food web, and then take a picture of it.
Use a graphic-design program.
Using the Insert Image button, insert an image of your food web in the answer space.
Part D
Changes in ecosystems can be attributed to natural causes, such as natural disasters, seasonal variations in climate, currents, and tidal activity. Many of these changes can affect the amount of food resources available in an ecosystem. Research one natural change that currently affects or could affect the aquatic ecosystem you chose. Use your food web model to explain how this change can affect the competition of food resources in your aquatic ecosystem.
Part E
In addition to natural factors, human activity can also alter ecosystems. Conduct research on a human activity that currently affects or can theoretically affect your chosen ecosystem. Use your food web model to explain how this change can affect the competition for food resources.
The break down of the freshwater aquatic ecosystem is given below.
Part A
For the purpose of this exercise, I will choose the Great Salt Lake in Utah, USA as my model for a freshwater aquatic ecosystem. The Great Salt Lake is the largest saltwater lake in the Western Hemisphere, and is known for its high salinity levels and unique chemistry.
The lake is fed by several rivers, including the Jordan and Bear rivers, and has no outlet, which contributes to its high salinity levels.
The lake also experiences seasonal changes in temperature and light availability, with warmer temperatures and more sunlight in the summer and cooler temperatures and less sunlight in the winter.
What is the freshwater aquatic ecosystem about?Part B
The Great Salt Lake ecosystem is home to a variety of organisms at different consumer levels. Some examples include:
Producers:
Phytoplankton: Microscopic algae that are the base of the food web and are primary producersSodium chloride-tolerant plants like alkali bulrush and saltgrassPrimary Consumers:
Brine flies: these insects feed on the phytoplanktonbrine shrimp: these tiny crustaceans feed on the phytoplanktonSecondary Consumers:
Black brant and other waterfowl: these birds feed on the brine flies and shrimpWhite pelican: These birds feed on the brine shrimpTertiary Consumers:
Coyotes and foxes: These mammals feed on the waterfowl and other small animalsAmerican avocet: These birds feed on the brine flies and shrimpQuaternary Consumers:
Humans: they may fish or hunt the aquatic species and use the lake's resourcesPart C
This is a possible food web for the Great Salt Lake ecosystem:
Phytoplankton -> Brine Flies -> Black Brant -> CoyotesPhytoplankton -> Brine Shrimp -> Pelican -> FoxesSodium chloride-tolerant plants -> American avocet -> HumansPart D
One natural change that currently affects the Great Salt Lake ecosystem is the seasonal variation in water levels. The lake's water level can fluctuate greatly depending on the amount of precipitation and evaporation.
During drought periods, the lake's water level can drop dramatically, which affects the competition for food resources in the ecosystem.
Part E
One human activity that currently affects the Great Salt Lake ecosystem is water diversion for irrigation and human consumption. The lake's water level is also affected by the diversion of water from the Jordan and Bear rivers, which feed into the lake. This water diversion decreases the amount of fresh water that enters the lake, which affects the amount of phytoplankton and other producers in the ecosystem.
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________ is the most satiating of all nutrients and has been shown to reduce food intake.A) CarbohydrateB) LipidC) ProteinD) Fiber
Protein is the most satiating of all nutrients and has been shown to reduce food intake. Numerous studies indicate that including more protein will promote satiating and reduce daily energy intake.
Protein is the most satiating macro nutrient, followed by carbohydrate and fat in a hierarchy of satiating effectiveness, with fat being the least satiating. Genes play a modest role in body weight, but other variables also affect it, including prenatal and early life impacts, bad diets, excessive television viewing, insufficient sleep, and the environment surrounding our food and physical activity. Ghrelin and leptin are the two hormones most closely linked to energy homeostasis, which results in feelings of hunger and fullness. The most satiating macro nutrient is classified as protein.
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What are all the condyloid joints in the body?
Condyloid joints are the most common type of synovial joint in the body and provide flexibility in a single plane of movement. They can be found in the wrist, mandible (jaw), elbow, and ankle joints where they allow for flexion-extension, abduction-adduction, and circumduction movements.
Additional condyloid joints include those found between the articular processes on several cervical vertebrae as well as between occipital condyles and temporal bones of the base of the skull.
These types of joints are also located between the radius and ulna bones in the forearm along with various articulations involving carpal bones such as metacarpals in hand or tarsals or metatarsals in foot.
Condyloid joints possess two convex surfaces which act like a ginglymus joint–that is to say, both surfaces move against one another–and this allows them to facilitate maximum mobility within their respective sagittal planes.
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Which strategy should be used by someone experiencing heartburn? a. Eat smaller meals. b. Put on weight c. Drink plenty of liquids during meals. d. Wear tight clothing. e. Lie down after meals.
Eat smaller meals should be used by someone experiencing heartburn. Correct option (a).
Heartburn, also known as pyrosis, cardialgia, or acid indigestion, is a burning feeling in the upper central belly or central chest. Heartburn is often caused by the regurgitation of stomach acid into the esophagus (gastric reflux). It is the most common sign of gastroesophageal reflux disease (GERD).
Belching, nausea, squeezing, stabbing, or a feeling of pressure on the chest are all classic characteristics for heartburn, in addition to burning. The discomfort usually starts in the chest (just beneath the breastbone) and can spread to the neck, mouth, or arm angle. Because the chest contains other vital organs than the esophagus (such as the heart and lungs), not all heartburn symptoms are esophageal in nature.
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Mass movements in the colon are stimulated by the presence of __________ in the __________.
food; stomach
chyme; duodenum
feces; rectum
All of the choices are correct.
Only the first and second choices are correct.
Mass movements in the colon are stimulated by the presence of food/chyme in the stomach/ duodenum. Hence only the first and second choices are correct.
The large intestine is divided into the colon and rectum, and it exhibits three different types of movements: regular irregular contractions, rhythmic ascending (antiperistaltic) waves of contraction originating at the end of the large bowel, and rhythmic longitudinal contractions in the colon and rectum. The first two patterns are in situ in the big bowel, making them seem more developed.
The final one was exclusive to older preparations and so seemed abnormal. The colon is often dormant when there is a gap between meals. The so-called gastrocolic and duodenocolic reflexes, a manifestation of enteric nervous system regulation, cause intestinal motility to considerably increase after eating as a result of signals transmitted by the enteric nervous system.
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What happens if Rh positive receive Rh negative blood?
Answer:
If an Rh-negative woman makes antibodies like this, it can seriously harm any Rh-positive babies she may have in the future. Her anti-Rh antibodies can attack Rh-positive blood cells in the fetus.
Mark brainiest
The only special sense not fully functional at birth is the sense of ________.
A) equilibrium
B) vision
C) smell
D) hearing
E) taste
The only special sense not fully functional at birth is the sense of B) vision
Which sense is not entirely developed at birth?Some of these are not fully developed. In the first several months of life, newborns' eyesight is undeveloped. Their uncontrolled eye movement gives them a cross-eyed appearance.
Infants' vision is less developed at birth than that of older kids or adults. Their optical system and eyes are still developing. But throughout the first several months of life, tremendous progress takes place. The developmental and visual milestones listed below are important to keep an eye out for.
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If part of the dna gene being transcribed is tgcaat, what will the mrna code be for that part?
Option c is Correct. If the DNA gene being translated has the sequence TGCAAT, the corresponding mRNA code is ACGUUA.
What function does mRNA serve?
The mRNA for the gene that is subjected to transcription is always made from the 5' to the 3' end, and uracil is substituted for thymine in the gene.
Genes are found in the DNA, and RNA polymerase aids in the formation of mRNA. Prokaryotes only have one form of RNA, but eukaryotes have multiple different types of RNA polymerase that transcribe mRNA, rRNA, etc. Prokaryotic cells' cytoplasm and eukaryotic cells' nuclei are where mRNA is created.
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Correct Question:
If part of the DNA gene being transcribed is TGCAAT, what will the mRNA code be for that part?
A.UGAAU
B.TGCAAT
C.ACGUUA
D.UCGTTU
Write out the messenger RNA bases that would pair with the
DNA strand shown in question 1.
DNA Strand is : ATGGCGATT
Answer:
mRNA: UACCGCUAA
DNA: TACCGCTAA
Explanation:
I'm not sure if you want the mRNA one or the DNA one, so I'll do both:
DNA:
G bonds to C, A bonds to T, and vice versa
So, your strand is TACCGCTAA
mRNA:
G bonds with C (and vice versa), A bonds with U, and T bonds to A
UACCGCUAA
I hope this helps!
Which muscle fibers type has the highest fatigue resistance?
Muscle fibers type has the highest fatigue resistance is slow-twitch muscle
Skeletal muscle is a cylindrical, elongated, multinucleated muscle attached to the human skeleton. These muscles are used to move the limbs consciously through the process of muscle contraction.
Slow-twitch muscle or type I muscle is a type of skeletal muscle that is red in color because it contains myoglobin. Myoglobin is a kind of reddish protein that functions to bind oxygen to muscle fibers. Slow-twitch muscles consume oxygen slowly in a very efficient way and contain lots of mitochondria as an energy source. Both of these causes this type of muscle to become fatigue resistant.
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