The prenatal circulation of blood is different than the postnatal circulation, mainly because the lungs are not in use. The fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord. Blood from the placenta is carried to the fetus by the umbilical vein.
Heres a few questions
Answer:
Don't know
Explanation:
How are alleles for the same gene related
Answer:
They make up the gene and decode what it is and does.
Explanation:
Alleles from the same gene are related because while they both come from different people, they affect the same gene. The two or more alleles make up the gene they form. They also decide whether the gene will be dominate or recessive.
Alleles are different versions of a gene that determine traits, with each parent contributing one allele to the offspring. There can be dominant and recessive alleles that influence the phenotype, and individuals can be homozygous or heterozygous for a trait.
Explanation:Alleles for the same gene are related because they are different versions of the same gene that determine various traits such as eye color, blood type, or hair color. Each allele contains a unique sequence of DNA, which can result in different physical characteristics, known as the phenotype. We receive one allele from each parent, giving us two alleles for each gene, which can be either homozygous (identical alleles) or heterozygous (two different alleles). Genes can express themselves in various ways; some alleles are dominant while others are recessive, and this interaction is essential in determining an organism's traits. For instance, the gene for blood type has three possible alleles: A, B, and O. Homozygous individuals have two identical alleles while heterozygous individuals have two different alleles, which can result in varying expressions of the gene.
The transfer of energy to a body by applying a force that causes the body to move in the direction of the force is called
The transfer of energy through force application causing a body to move in the direction of the force is defined as 'work' in physics. This concept is closely related to 'power', which is the rate of energy transfer in a system. It is an integral part of studies in mechanics and thermodynamics.
Explanation:The transfer of energy to a body by applying a force that causes the body to move in the direction of the force is called work. This energy transfer occurs when an external force is applied to an object system, causing it to move through a distance. In terms of physics, work is the product of the force's component in the direction of the displacement and the magnitude of the displacement.
As an example, consider a piston filled with gas being compressed or expanded. The work done on the piston is equated to the energy transferred into the piston system. This concept is part of thermodynamics, a fundamental aspect of physics that studies the movements and interactions of energy.
Power is closely related to work, defined as the rate of energy transfer into, out of, or within a system. So, if we look at the power involved in moving a body, it can be expressed in terms of the forces acting on it. The higher the rate of work done, the greater the power exerted over the system.
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Teak, a highly prized tropical hardwood, is used extensively for outdoor furniture. Unfortunately, teak is grown in only a few locations throughout the world and native trees are becoming scarce due to repeated harvesting and the clear-cutting of forests. Logging teak forests disrupts the natural habitat of many other species and reduces local biodiversity. Foresters, seeking a reasonable solution to this problem, might consider ALL BUT
A) replanting areas where teak has been already harvested.
B) cultivating teak on farms for harvesting instead of using native trees.
C) growing farm crops in greenhouses instead of on land previously home to teak trees.
D) finding another species to replace teak to some degree to reduce teak harvesting.
Hey guys!
Just wanted to let you know, like the other user commented, C is the correct answer!
A reasonable solution to this problem might consider all but only Growing farm crops in greenhouses instead of on land previously home to teak trees.
What are Teak plants?
The tick plant is called as king of timbers. It grows as a very huge tree and provides excellent quality wood. Its wood is mainly used in making furniture.
Teak is prized hardwood and is used for outdoor furniture. Teak is grown in only a few locations throughout the world and is a native tree becoming scarce due to repeated harvesting.
Logging teak forests disrupts the natural habitat of many other species and it reduces local biodiversity as well. Forests are a reasonable solution to this problem they consider replanting areas where teak has been already harvested.
Cultivating teak on farms for harvesting instead of using native trees, and finding another species to replace teak to some degree to reduce teak harvesting.
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which of the following statements about scientific theories are true? (A) theories cannot be tested (B) theories are the same as hypotheses. (C) theories can be used to predict the existence of as yet unobserved things or phenomena. (D) theories are ethical principles based on a religious foundation
(C)theories can be used to predict the existence of as of yet unobserved things or phenomena
Final answer:
The true statement about scientific theories is that they can be used to predict unobserved phenomena. Theories are well-established frameworks, different from hypotheses, that can be empirically tested and are not ethical precepts. The correct option is: (C) theories can be used to predict the existence of as yet unobserved things or phenomena.
Explanation:
This statement is true because scientific theories are not merely guesses; they are comprehensive frameworks supported by a body of evidence that can make predictions about the natural world.
Theories can be tested and they are different from hypotheses. Theories are much more established and are supported by evidence collected from multiple experiments or observations. Also, they are not based on ethical or religious principles, but rather on empirical evidence. A theory may begin as a hypothesis, which is a proposed explanation made on the basis of limited evidence as a starting point for investigation. However, once a hypothesis has been tested repeatedly and consistently supports the evidence, it may become a theory.
In science, theories are crucial because they provide explanations that predict and can be tested in various ways, and can be used to understand and predict the occurrence of future events or discoveries. When new evidence appears that contradicts a theory, the theory is reconsidered and may be revised. This is how science advances knowledge.
Which molecule is most responsible for determining an organism eye color body structure and cellular enzymes production
DNA is the molecule that determines an organism's eye color, body structure, and cellular enzyme production. Traits of an organism are determined by specific parts of the DNA called genes. These genes command the construction of specific proteins that determine our physical attributes, produce enzymes for chemical reactions and influence our eye color.
Explanation:The molecule that is primarily responsible for determining an organism's eye color, body structure, and cellular enzyme production is DNA (Deoxyribonucleic Acid). DNA carries the genetic instructions for the development, functioning, and reproduction of living organisms. Its structure is a double helix and is composed of nucleotide base pairs.
The traits (for example, eye color) of an organism are determined by specific regions of DNA, called genes. Each gene provides the instructions required to construct a particular protein. These proteins have various roles within the body, including giving us our physical characteristics, producing enzymes that drive chemical reactions within cells, and determining our eye color.
For instance, in Drosophila, the gene for eye color is located on the X chromosome. Different versions of this gene (alleles) result in different eye colors. Similarly, proteins are responsible for forming the structure of our bodies and producing cellular enzymes that guide metabolic processes within the body.
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A planet has an orbital period of 3.24 years . What is the average distance of the planet from the sun? A.2.19
Answer:
5.83 AU is the answer to your question
Explanation:
Answer:
2.19 AU
Explanation:
because teacher told me
Determine whether each statement below describes traditional or modern classification.
We need the statements to answer your question!! Also background information
Answer:
traditional classification- based on similar appearance
modern classification- based on evolutionary relationships
modern classification- known as Cladistics
traditional classification- known as Linnaean classification
Which process stops when ribsome reaches stop condon
Translation
Explanation: The method of translation practices energy to move the mRNA within the ribosome and to determine the peptide. The ribosome changes along the mRNA and the process repeats. The part of the polypeptide chain development and translation ends when the ribosome stops the stop codon on mRNA.
I apologize if this is not what you meant.
When a ribosome reaches a stop condon during translation, the process that ends is translation termination. This results in the completion of the polypeptide and the disestablishment of the translation complex.
Explanation:The process that stops when a ribosome reaches a stop codon is translation termination. When the ribosome encounters a stop codon (UAA, UAG, or UGA), the production of the protein, or polypeptide, is completed. Release factors trigger the detachment of the amino acid from its tRNA and the newly made protein is released. Subsequently, the small and large ribosomal subunits dissociate from the mRNA and from each other, freeing them up to participate in other translation initiation complexes.
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Plants are green because they contain the protein chlorophyll. A bucket was left on the lawn for one week. When the bucket was removed, the grass under the bucket had
turned from green to a yellowish white color. This change is due to the interaction between the grass and
decomposer organisms in the soil, an abiotic factor
2
the amount of sunlight, an abiotic factor
increased moisture under the bucket, a biotic factor
the metal composition of the bucket, a biotic factor
Answer:
The amount of ⛅ sunlight .
Explanation:
PLEASE MARK AS BRAINLIEST
The grass turned from green to a yellowish white color due to decreased sunlight and possibly increased moisture under the bucket.
The change in color of the grass from green to a yellowish white under the bucket is most likely due to the decreased amount of sunlight reaching the grass.
chlorophyll, the green pigment in plants, is responsible for capturing sunlight for photosynthesis.
Without adequate sunlight, chlorophyll production decreases, causing the grass to lose its green color.
Increased moisture under the bucket may also contribute to the change in color, as excessive water can lead to stress and damage to the grass.
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A species of flower lives in an environment
that has always had an abundance of rain but is
now experiencing less rainfall each year. Which
variation within the flower population would be
beneficial in terms of natural selection?
A a difference in pollen production
B a difference in the color of petals
C a difference in the length of the roots
D a difference in the length of the stems
C
A change in root length in terms of increase in length would be beneficial for the plant to continue to absorb a sufficient amount of water from the soil.
The variation within the flower population that would be beneficial in terms of natural selection is a difference in the length of the roots.
What do you mean by Natural Selection?
Natural selection may be defined as the strategy through which populations of living organisms adapt and change. It may lead to favorable variations among organisms.
The length of roots depends on the availability of water in the environment. If there is more amount of water, the length of the root is typically shorter, while if there is a scarcity of water a plant has to expands its roots downwards and absorbs more water.
Therefore, the variation within the flower population that would be beneficial in terms of natural selection is a difference in the length of the roots.
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Are genetically modified organisms are used to make medicines as well as agriculture crops
Answer:
Medicines is a high possibility, but agriculture is a yes.
Explanation:
What are the genotypes and phenotypes of the parents of Ff and FF?
F = free
f = attached
Make a punnett square.
F F
F FF FF
f Ff Ff
So the genotypes are 50% FF and 50% Ff.
The phenotype is 100% free since Ff is heterozygous and the dominant trait is present.
Could a man with type ab blood be the father of a child with type o blood
Answer:
No.
Explanation:
Because the man has the dominant A and B genotypes, it cannot cross with a female of any set of traits to produce a child with O type bloodhow much money is spent on ocean exploration per year?
Answer:
Each year NASA spends $18.7 billion
The arrows in the chart above represent the movement of carbon between four reservoirs: the ocean, plants, fossil fuels, and the atmosphere. The numbers in the blue boxes show the gigatons of carbon moving each year. More carbon is moving into the vegetation for photosynthesis than is moving out to the atmosphere via respiration. This means that the vegetation reservoir is a carbon sink, taking in more carbon from the atmosphere than it is releasing to the atmosphere. A carbon source is the opposite. A reservoir that behaves as a carbon source releases more carbon to the atmosphere than it takes in.
Consider the statements listed here. Do they accurately describe potential changes in the model? Choose all that are correct.
Deforestation would result in a decrease in the carbon sink.
Increased use of alternative energy sources such as solar and wind energy would result in a decrease in released or sourced carbon.
If we consider non-industrialized countries, the model would remain the same.
If global warming continues, we would expect a change in the amount of carbon found in the ocean reservoir.
Combustion of fossil fuels acts as a carbon sink.
All carbon in the atmosphere is made by humans.
Which ones is it?
Answer:
got it wrong : <
Explanation:
Deforestation would result in a decrease in the carbon sink.
Increased use of alternative energy sources such as solar and wind energy would result in a decrease in released or sourced carbon.
If global warming continues, we would expect a change in the amount of carbon found in the ocean reservoir.
The following below are correct:
Deforestation would result in a decrease in the carbon sink.Increased use of alternative energy sources such as solar and wind energy would result in a decrease in released or sourced carbon. If global warming continues, we would expect a change in the amount of carbon found in the ocean reservoir.What is Carbon sink?This can be defined as anything that absorbs more carbon from the atmosphere than it release such as plants etc.
Deforestation involves feeling of trees which will cause a decrease in the carbon sink. The use of alternative energy will also lead to a decrease in the use of carbon.
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Which is not a method used in genetic engineering?
A gene is removed.
A gene is inserted to make a mutation inactive.
A synthetic gene is created.
Answer:
A. A gene is removed
Explanation:
Answer: Third option is correct.
Explanation:
Genetic engineering is a method of artificial manipulation, modifications and recombination of genes to modify the population of any organisms.
In this type pf engineering, genes get inserted to make a mutation inactive or a gene is removed.
But no synthetic gene is created by this process.
Hence, third option is correct.
Which statement accurately describes the relationship between chromosomes, DNA & genes?
Question 4 options:
DNA is made of tightly coiled chromosomes and genes.
Chromosomes move freely through the cell in order to locate the DNA and genes.
Genes contain chromosomes and coiled around DNA.
Chromosomes are made of tightly coiled DNA and genes are small sections within the DNA.
Answer:
it's the last option
Explanation:
the last option. Genes make DNA, DNA make chromosomes.
Chromosomes are made of tightly coiled DNA and genes are small sections within the DNA is a relationship between chromosomes, DNA & genes.
What are the types of genes ?Genes are the segment of DNA can be present in chromosome both in prokaryotic and eukaryotic cell, it can be up different types like house keeping gene, luxury gene, structural gene, pseudogene etc.
House Keeping Genes or constitutive genes are express in a continuous manner and they code for proteins which are important to do all cellular activities and continuously needed by the cell.
Non-constitutive Genes or luxury genes are express in a discontinuous manner in a cell and can be Inducible and repressible genes; Structural Genes are protein-coding genes which code only functional proteins.
Pseudogenes are similar to protein-coding genes, but they cannot produce a functional protein due to disintegrated open reading frame (ORF).
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A cross of a black chicken (BB) with a white chicken (WW) produces all speckled off spring (BW). This type of inheritance known as
Answer:
Codominance
Explanation:
When we say codominance, both traits of the parents are seen on the offspring. For example in your problem, the offspring is speckled meaning there is a mixture of both white and black, traits coming from each parent.
Do not confuse this with incomplete dominance. Incomplete dominance is similar but the difference is that the traits are "BLENDED". So let's say that if incomplete dominance occurred, the offspring would be gray.
The described inheritance pattern, in which a cross between a black and white chicken produces all speckled offspring, is known as codominance. This pattern of inheritance happens when neither of the two alleles of a gene is dominant or recessive, resulting in offspring that display traits from both parents.
Explanation:The type of inheritance described in the question, where a cross between a black chicken (BB) and a white chicken (WW) produces all speckled offspring (BW), is known as codominance. In codominance, both alleles are equally strong and both are expressed in the offspring's phenotype. In this case, neither the black color (B) nor the white color (W) is dominant over the other, resulting in a speckled combination of both colors (BW).
Bringing in a different context, in cases of codominance in mice, a cross between a black mice (A) and a white mice (a) will produce grey mice (Aa). Many genetic traits indeed follow this pattern of inheritance.
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How is mitosis different in plants and animals
Instead of in humans ... cell development, plants and animals use mitosis for cell division
Answer:
Mitosis in plants:
The plants cells do not change the shape before the process of mitosis. Cytokinin is the main hormone in the mitotic division of plant cell. Asters are absent in plant cell. The cell plate method is involved in plant cell mitosis. Microfilaments are not involved majorly in plant cell division.
Mitosis in animals:
The animals cells change the shape and become oval or rounded before the process of mitosis. Different number of hormone is involved in the mitotic division of animal cell. Asters are present in plant cell. The cell plate method is not involved in animal cell mitosis and division occurs through cleavage. Microfilaments are involved majorly in plant cell division.
Which of the following is a way that biotechnology such as selective fishing nets designed to reduce bycatch has impacted the environment?
A greater variety of species have been caught and sent to market.
Depleted fish stocks have been able to return to healthy numbers.
Fishermen have seen a large increase in their profits with minimal effort.
There has been less food available to the rest of the ecosystem.
i’m pretty sure it would be C.
Answer:
B, Depleted fish stocks have been able to return to healthy numbers.
Explanation:
i got it correct
An atom of calcium has 20 protons. How many electrons does it have ?
In any atom of element, the number of proton is equal to the number of electrons .
Hence atom of calcium having 20 protons also have 20 electrons.
Answer:
In any atom of element, the number of proton is equal to the number of electrons .
Explanation:
Whose system of classifying and naming organisms is still in use today?
Sutton
Linnaeus
Aristotle
Darwin
Answer:
Linnaeus
Explanation:
Does the following statement describe a function of DNA, a function of RNA, a function of both DNA and RNA, or a function of neither DNA nor RNA? It stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids.
DNA
RNA
both DNA and RNA
neither DNA nor RNA
Answer:
DNA
Explanation:
DNA I held in the nucleus, because the nucleus is the 'brain's and DNA is the 'knowledge' held there. RNA is coded IN the nucleus, but then leaves and goes into the cytoplasm where it undergoes translation.
Based on cell theory, why is a virus considered non-living? A) A virus does not have a nucleus. B) A virus does not contain genetic material. C) A virus is too small to be considered a cell. D) A virus cannot reproduce itself without a host cell.
answer is D) a virus cannot reproduce itself without a host cell.
how do regulatory proteins of the cell cycle help maintain homeostasis
Answer: They make sure that the body's pH, glucose, and iron are all at their proper levels.
Explanation:
which would be an adaptation for living in the tundra
a. funnel shaped leaves to help water runoff
b. hibernation to lower metabolism in the winter
c. large ears to release heat
Answer:
b. hibernation to lower metabolism in the winter
Explanation:
Tundra, besides the one I live in apparently, are very, very dry because of the cold. This means that it may be helpful to hibernate for the part of the year where it is even too cold for plants and other animals.
Answer: it’s A
Explanation: cus funny
A____ is a group of 3 nitrogen based on a mRNA molecule that carries the code for a specific amino arid. A____ is a set of 3 nitrogen bases on a tRNA molecule that matches a codon on an mRNA molecule
A codon is a group of 3 nitrogen bases on a mRNA molecule that carries the code for a specific amino arid. An anticodon is a set of 3 nitrogen bases on a tRNA molecule that matches a codon on a mRNA molecule.
A codon is a sequence of three nucleotides on mRNA that represents a specific amino acid, while an anticodon on tRNA matches this sequence. The genetic code is the set of rules dictating how codons are translated into proteins. Codons and anticodons play crucial roles in the protein synthesis process.
Explanation:A codon is a group of 3 nitrogen bases on an mRNA molecule that carries the code for a specific amino acid. Similarly, an anticodon is a set of 3 nitrogen bases on a tRNA molecule that matches a codon on an mRNA molecule. Each codon consists of three nucleotides, usually abbreviated with the letters A, U, G, and C. In the mRNA, uracil (U) is used whereas DNA contains thymine (T). The mRNA molecule instructs a ribosome to synthesize a protein according to the genetic code represented by these codons.
The genetic code is a set of rules by which information encoded in the genetic material (DNA or mRNA sequences) is translated into proteins by living cells. This information is carried by the sequence of codons in mRNA. For example, the codon AUG not only codes for the amino acid methionine but also serves as a start signal for translation. Moreover, there are 64 possible codons, more than the number of amino acids, which allows for some redundancy; several codons can specify the same amino acid. In addition, some codons function as stop signals to end protein synthesis.
A hiker has become overwhelmed with heat while walking in the Grand Canyon. The hiker's body goes into overdrive to keep cool in the heat. The hiker needs to hydrate his or her cells. What process is used to regulate homeostasis?
A. Hydration B. Cellular transport C. Passive transport D. Balanced equilibrium
Answer:
A. Passive transport
Explanation:
Cell transport is the exchange of substances through the plasma membrane
The passive transport allows the molecular passage through the membrane in favor of the gradient of concentration or electrical charge, that is to say that it transports values of greater concentration at lower concentration, as it happens in the osmosis process where a transport of molecules of water mediated by specific proteins in favor of its concentration gradient.
Answer:
Cellular transport
Explanation:
Which natural forces can weather and erode rock? Check all that apply
Answer: Ice, heat, water and wind
Explanation:
Answer:
2 3 4 5
Explanation: