why blood flow in a leg vein is slow when there is lack of movement?
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Related Questions
why plants are growing
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Answer:
With the help of warmth, oxygen, and good food from the soil, the seed will open and sprout out. Once the leaves and roots will grow, the plant can go through the process of photosynthesis, the process that plants use to breathe and to make food using sunlight, during photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Explanation:
Webbed fingers and toes in humans is due to a rare dominant gene. What percent of the offspring would you expect to have normal fingers and toes when a man heterozygous for webbed fingers and toes marries a woman with normal fingers and toes?
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Answer:
I would guess the percent is around 95.
Explanation:
During semiconservative DNA replication, ______. Multiple choice question. one of the new daughter double helix is made of the two original strands, while the other one is made of two new strands random portions of each new double helix come from the original molecule or are newly synthesized one of the strands in each new double helix comes from the original molecule, and one is newly synthesized
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During semiconservative DNA replication, one of the DNA strands in each new double helix comes from the original molecule, and one is newly synthesized. It is for that reason that DNA replication is 'semiconservative'.
DNA is a double helix molecule composed of two long chains of nucleotides linked by hydrogen bonds.
Meselson and Stahl discovered that DNA replication is semiconservative by experimenting with the bacterium Escherichia coli.
During their experiments, Meselson and Stahl labeled the DNA of E. coli across generations using radioactive isotopes of nitrogen (N) and they observed that only one DNA strand contained these isotopes.
Thus, DNA replication is semiconservative because each daughter cell contained one newly synthesized DNA strand and one original DNA strand.
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what occurs at the decussation of the pyramids in the medulla?
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At the decussation of the pyramids in the medulla, fibers from the corticospinal tract cross over from one side of the brain to the opposite side of the body.
This crossing over allows for precise motor control of the limbs and trunk on the opposite side of the body. The corticospinal tract is responsible for voluntary movements, so this decussation is a crucial step in controlling movements on both sides of the body.
This process is also known as the pyramidal decussation. At the decussation of the pyramids in the medulla, the axons of the corticospinal tracts cross over, or decussate, from one side of the medulla to the other. This process results in the motor control of the opposite side of the body by each cerebral hemisphere.
This crossing over allows for precise motor control of the limbs and trunk on the opposite side of the body. The corticospinal tract is responsible for voluntary movements, so this decussation is a crucial step in controlling movements on both sides of the body.
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Helpppppppppppp plzzzzzz asappppppppppp
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Answer:
The answer is larynx
How did the Egyptians use the Nile River in everyday life?
Egyptians relied on the river as a source of food and flax.
The swiftly moving river created stones for building pyramids.
Precious minerals that they traded came from the Nile.
Egyptians used the water only for farming, not for drinking.
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Answer:
Explanation:
The Egyptians used the Nile River in many ways in their everyday life. They used it for farming, transportation, trade, religion, and technology. Egyptians did not rely on the Nile river for flax and food. The river did not create stones for the building stones for pyramids. Precious minerals were not traded from the Nile and Egyptians used the Nile for a lot of things, not just for farming. Therefore, none of these options are correct. They are either incomplete or inaccurate statements about how the Egyptians used the Nile River in everyday life.
If a mutation in a gene does not result in a change in protein function, the resulting effect is most likely to be
A.) Neutral
B.) Beneficial
C.) Harmful
D.) None of the above
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If the protein structure does not change then the function will not be affected either. The resulting effect is neutral because the shape and function was not altered.
what is the centripetal forces acting on the moon. how would the motion of the moon change if there were no centripetal forces acting on it?
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Answer:
Gravity. If there was no gravity the moon would float away.
Explanation:
Match each of the following descriptions with the correct digestive structure: _____ a. absorbs water and consolidates waste 1. Esophagus _____ b. site of most digestion and absorption 2. large intestine _____ c. transports food 3. oral cavity _____ d. where chemical digestion of carbohydrates begins 4. stomach _____ e. pummels ingested food into chyme 5. small intestine _____f. commonly called the "throat" 6. pharynx
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a. 2 - Large intestine absorbs water and consolidates waste.
b. 5 - Small intestine is the site of most digestion and absorption.
c. 1 - Esophagus transports food.
d. 3 - Oral cavity is where chemical digestion of carbohydrates begins.
e. 4 - Stomach pummels ingested food into chyme.
f. 6 - Pharynx is commonly called the "throat."
In the **digestive system**, each structure plays a specific role in the process of breaking down and absorbing nutrients. The **large intestine** is crucial for absorbing water and consolidating waste into feces, while the **small intestine** is the primary site for digestion and absorption of nutrients. The **esophagus** serves as a transport pathway for food, and the **oral cavity** initiates the chemical digestion of carbohydrates. The **stomach** mechanically processes food into a semi-liquid substance called chyme, and the **pharynx**, also known as the throat, is a key structure in the passage of food from the mouth to the esophagus.
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Consider the following two statements about succession.
Student 1:
Matthew - As succession begins, communities tend to be dominated by mostly K-selected species. As succession continues, r-selected species tend to compete better and therefore become more and more common.
Student 2:
Iman - As succession begins, communities tend to be dominated by mostly r-selected species. As succession continues, K-selected species tend to compete better and therefore become more and more common.
Which student is correct?
a. Provide a rationale for your answer (2 marks)
b. Provide a specific example of succession which includes at least one example of an r-selected and one example of a K-selected species. (1 mark)
Note - No marks are earned by simply agreeing with either Matthew or Iman
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When water is cooled, it becomes more dense and sinks to the bottom of the water column. The displaced water is them replaced with ___________.
more cold water from the North and south pole
warm water moving in from the equator
water that is roughly the same temperature as the displaced water
water from volcanic vents
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B) warm water moving in from the equator
A person's genese are used for dna fingerprinting. true or false?
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It is TRUE that a person's genese are used for DNA fingerprinting.
A person's genes are used for DNA fingerprinting. DNA fingerprinting, also known as DNA profiling or genetic fingerprinting, is a technique that analyzes specific regions of an individual's DNA to create a unique genetic profile. These regions, known as genetic markers, contain variations in DNA sequences that are specific to each individual. By comparing these genetic markers between different individuals, DNA fingerprinting can be used to determine relationships, identify individuals, or establish biological evidence in forensic investigations.
In DNA fingerprinting, specific genes or non-coding regions of the DNA, such as microsatellites or short tandem repeats (STRs), are targeted and amplified using techniques like polymerase chain reaction (PCR). The resulting DNA fragments are then separated and analyzed to create a distinct pattern, or "fingerprint," that is unique to each individual.
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When population grows past the ecosystem’s carrying capacity, what happens to the population?
A. Continues to grow
B. The population starts to die off to return to carrying capacity
C. The population will go extinct due to lack of resources
D. The population grows, then finds a new carrying capacity.
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Answer:B animals will die since there arent enough resources for everyone until there is enough for the remaining population to use
When Population growth past the ecosystem’s carrying capacity, then the population starts to die off to return to carrying capacity (Option B).
The carrying capacity refers to the maximum number of individuals of a population that can be supported by particular environmental conditions.Carrying capacity depends on both biotic factors (e.g., presence of predators, food availability, etc.) and abiotic factors (e.g., water availability, living space, etc).When a population passes its carrying capacity, then the environment becomes unsuitable for the individuals of that population to survive.In conclusion, when population growth past the ecosystem’s carrying capacity, then the population starts to die off to return to carrying capacity (Option B).
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The small intestine is adapted for exchanging materials because it has a large surface area, a thin membrane, and an efficient __________ supply.
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Answer:
The small intestine is adapted for exchanging materials because it has a large surface area, a thin membrane, and an efficient ___b__l_o_o_d__ supply.
Explanation:
Small intestine has an efficient blood supply.
Small intestine have enzymes that help in digestion of food which are further absorbed into blood stream through which they are passed into different body parts.What is small intestine?It is a part of digestive system which connects stomach and large intestine.It is about 20 feet long and folds many times to fit inside the abdomen.The small intestine has three parts:-- Duodenum
- Jejunum
- Ileum
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Which is the correct ratio for SINE?
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Answer:
opposite/hypotenuse
Explanation:
SOHCAHTOA method, shows that sine is Opposite Hypotenuse.
How are photosynthesis and respiration related?
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Function, Photosynthesis, Cellular Respiration, Significance, Considerations.
HOPE IT HELPS :)
Answer:
The products of photosynthesis are the reactants of cellular respiration; the products of cellular respiration are the reactants for photosynthesis.
Explanation:
Photosynthesis uses CO2, sunlight, and H2O to create glucose (C6H12O6) and O2. Cellular respiration uses glucose (C6H12O6) and O2 to create ATP (energy molecules), carbon dioxide, and H2O. One cannot exist without the other. They also help balance out CO2 and O2 levels in the atmosphere.
3.2 State whether each of the phrases applies to A only, B only,
both A and B or none. Write down A only, B only, both A and B
or 'none' next to the question number.
For example, 3.2.6 None
3.2.1 Mitosis
A cloning
B chromosomes
3.2.2 Chromosome
A chromatid
B spindle fibre
3.2.3 Phases in the cell cycle
A interphase
B mitosis
3.2.4 Tumour
A benign
B malignant
3.2.5 Bone cancer
A carcinoma
B leukaemia
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Answer:
3.2.1 Mitosis - Both A and B
3.2.2 Chromosome - Both A and B
3.2.3 Phases in the cell cycle - Both A and B
3.2.4 Tumor - Both A and B
3.2.5 Bone cancer - B only
Explanation:
1. Mitosis is a process of cell replication , in which one cell divides into two identical daughter cells having the same number of chromosomes. In mitosis, the two new cells are genetically identical. Copies of the chromosome (containing the DNA) are made and distributed equally to each cell. Some organisms such as bacteria reproduce entirely by mitosis.
In cloning, an organism that is genetically identical to another organism is made from that original organism. Cloning can occur naturally or may be done by man artificially. In nature, many organisms produce clones through asexual reproduction for example bacteria produces clones by mitotic binary fission.
Therefore, the phrase mitosis, applies to both A and B.
2. Chromosomes are structures found within the nucleus of cells that contain the genetic material of the organism. The chromosomes are composed two identical structures called chromatids thar are joined together to at a constricted point known as centromere.
During cell division, long fibres extend from the centroiles at the ends of the cell to the centromere of the nucleus in order to pull them apart. These long fibres are known as spindle fibres.
Therefore, the phrase, Chromosome, applies to both A and B
3. The phases in the cell cycle are divided into two major stages : interphase and Mitosis. In interphase, the cell grows and makes a copy of its DNA.
In mitotis, the cell DNA divides into two sets, the cytoplasm divides, forming two new cells.
Thus, phases of cell cycle applies to both A and B
4. Tumours are abnormal growths occurring in any part of the body which may be benign or malignant.
Benign tumours are harmless growth which do not have spread out to other tissues to form various cancers.
Malignant tumors spread out from their point of growth to other tissues leading to cancer in these other tissues and organs.
Therefore, tumors applies to both benign and malignant.
5. Bone cancer refers to abnormal growth of bone cells.
Carcinomas are cancers of the skin and tissue lining of organs.
Leukaemia are cancers affecting the bone marrow, whereby the bone marrow makes abnormal white blood cells, red blood cells and platelets.
Thus, bone cancer only applies to B.
Which is a density-dependent factor?
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Answer:
flood
Explanation:
Answer:
Space
Explanation:
Explain why a diagram of the tree of life is difficult to construct.
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Answer:
Because of how genes change and how quickly they change, evolution is complicated. At the start of evolution, there shouldn't be a straight tree branch—it should be a twisted mess.
\(\textbf{OAmalOHopeO}\)
HELP
Describe how the reactants of photosynthesis are the products of cellular
respiration and that the products of photosynthesis are the reactants of cellular
respiration.
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Answer:
Photosynthesis produces: glucose and \(O_{2}\)
...from \(CO_{2}\), energy (light) and \(H_{2} O\)
Respiration produces: energy (ATP),\(CO_{2}, H_{2} O\)
....from glucose and \(O_{2}\)
Explanation:
These end products, namely \(O_{2}\) and glucose are then used in respiration...
Using energy in the form of solar energy, plants, phytoplankton, algae, and other microorganisms produce chemical energy via photosynthesis. This complex mechanism is central to these species.
They combine light energy from the sun, water, and carbon dioxide.
6\(CO_{2}\) + 6\(H_{2} O\) + (energy) →\(C_{6} H_{12} O_{6}\) + 6\(O_{2}\)
In the mechanism of cellular respiration, organisms extract energy from food. Sugars in the form of glucose are broken down into carbon dioxide and water during aerobic respiration in mitochondria to produce energy in the form of ATP (adenosine triphosphate).
\(C_{6} H_{12} O_{6} + 6 O_{2} _{\to \\) \(6CO_{2} + H_{2} O + energy (ATP)\)The waste products, \(CO_{2}\) and \(H_{2} O\), result from respiration, these are used as reactants in the photosynthetic process. In turn, its products are the reactants \(O_{2}\) and \(C_{6} H_{12} O_{6}\) in respiration.
What was most crucial to gregor mendel’s final analysis
A The study of statistics and probabilities
B the study of plant varieties
C the study of agriculture
D His study of experimental method
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1. transcription
converting the genetic code into the language of proteins
2. translation
the transfer of genetic code from DNA to an RNA molecule
3. monohybrid cross
when genes are neither dominant nor recessive and display a blending of traits in the phenotype
4. incomplete dominance
genes that are carried on the X chromosome
5. sex-linked genes
the breeding of two organisms which differ in a single trait
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Answer:
To summarize what we know to this point, the cellular process of transcription generates messenger RNA (mRNA), a mobile molecular copy of one or more genes with an alphabet of A, C, G, and uracil (U). Translation of the mRNA template converts nucleotide-based genetic information into a protein product. Protein sequences consist of 20 commonly occurring amino acids; therefore, it can be said that the protein alphabet consists of 20 letters. Each amino acid is defined by a three-nucleotide sequence called the triplet codon
4. Which of the following statements correctly compares the function of nucleic
acids and proteins?
A. Proteins speed up chemical reactions; nucleic acids provide structural support.
B. Proteins store energy, nucleic acids provide energy
C. Proteins help build cell membranes; nucleic acids store energy
D. Proteins express genetic information; nucleic acids store genetic information
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Answer:
B
Explanation:
Proteins do store energy and nucleic acids provide energy thats why B is correct.
What phase of the cell cycle does DNA replication occur?
a
G1
b
S
c
G2
d
M
e
cytokinesis
Answers
Answer:
s phase
Explanation:
so the genetic material can double before it begins division
In mice, black fur (W) is dominant over white fur (w), and black eyes are dominant (R) over red eyes (r). The two genes are located on different chromosomes.A male mouse with black fur and black eyes mated with a female mouse with white fur and red eyes. Out of 64 offspring, 30 had black fur and black eyes, and 34 had white fur and black eyes. A male mouse heterozygous for both fur and eye colour mated with a female mouse heterozygous for both traits.Out of 64 offspring, how many mice can be expected to be heterozygous for both fur and eye colour? Select one: a. 16 b. 12 c. 36 d. 1 e. 48 f. 4
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Answer:
To solve this problem, we need to first determine the genotypes of the parent mice and then use a Punnett square to predict the genotypes and phenotypes of their offspring.
The male mouse with black fur and black eyes is WWRR (homozygous dominant for both traits) and the female mouse with white fur and red eyes is wwrr (homozygous recessive for both traits).
When these two mice mate, their offspring will all be WwRr (heterozygous for both traits) because each parent can only pass on one allele for each gene.
Out of the 64 offspring, we know that 30 had black fur and black eyes (WWRR or WWRr), and 34 had white fur and red eyes (wwrr). This means that the remaining offspring (64 - 30 - 34 = 0) must have had black fur and red eyes (Wwrr).
When the heterozygous male (WwRr) mates with the heterozygous female (WwRr), we can use a Punnett square to predict the genotypes and phenotypes of their offspring:
| | W | w |
|---|---|---|
| R | WWRR | WWRr |
| r | WwRR | WwRr |
So, out of the 64 offspring, we can expect 16 (25%) to be heterozygous for both fur and eye color (WwRr). Therefore, the answer is a. 16.
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Explanation:
Identify FOUR prescription drugs which are commonly abused.
Answers
Answer:
Oxycodone
Prednisone
Acetaminophen
Morphine
Explanation:
Answer:
Barbiturates
Benzodiazepines
Codeine
Morphine
the study of normal tissue structure is called .the study of normal tissue structure is called .cytologybiopsyautopsyhistology
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Answer:
D. histology
Explanation:
The study of normal tissue structure is called Medical Histology.
true or false light from the sun provides heat and heat and energy?
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Answer:
True the sunlight from the sun provides heat light and thermal energy
Explanation:
What do these two changes have in common?
water vapor condensing on a bathroom mirror
stapling an envelope shut
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Both of these changes, water condensing and stapling an envelope, are examples of physical changes. A physical change is a change in the state or appearance of matter without changing its chemical composition
What are physical changes?The two changes have in common that they are both physical CHANGES.
A physical change occurs when a substance undergoes a transformation, but the original chemical composition remains the same. In the case of water vapor condensing on a bathroom mirror, the water molecules are changing form from a gas to a liquid, but the chemical composition (H₂O) remains the same. Similarly, stapling an envelope shut is a physical CHANGE, as the material is being altered in shape, but not in its chemical makeup.learn about what chemical changes are
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As you move from right to left on the periodic table, what happens to the number of protons and neutrons in atoms?
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As you move across a period, the atomic mass increases because the atomic number also increases. When the atomic number increases, this means that there are more protons and neutrons that add to the atomic mass of an atom. The atomic mass for any given atom mainly comes from the mass of the protons and neutrons
it might be late but honestly my fault for not checking any earlyer