Answer:
Gamete and bacterial cell.
Which of the following statements is true?
A. A valid scientific hypothesis is self-evident and does not need to be tested by experimentation.
B. The scientific method or process can help people make informed medical and environmental decisions.
C. Once a hypothesis has been proposed, it can never be challenged.
D. If they are properly designed, experiments always prove hypotheses to be wrong.
Answer: B
Explanation:
Lipids exhibit different characteristics based on their structures. The image shows different examples of lipids, such as solid butter and liquid canola oil.
Butter, coconut oil, and olive oil bottles.
Photo by NIH/Bill Branson
Which type of bond is found in many carbon-to-carbon bonds in canola oil, but very few carbon-to-carbon bonds in butter?
C–C
C=C
C=H
C–H
Canola oil contains many carbon-to-carbon bonds of the type C=C, a double bond, whereas butter contains very few carbon-to-carbon bonds.
Which of the following statements about lipids and triglycerides is true?Fats, cholesterol, and minerals are all considered Lipids. Lipids have polar carboxyl groups in their hydrophilic region and non-polar hydrocarbon chains in their hydrophobic area. Saturated or unsaturated fatty acids can be lipids.
Based on their structural differences, how do saturated and unsaturated lipids vary in their properties?While unsaturated fatty acids lack the covalent carbon-carbon bond and instead have one or more bonds connecting the hydrocarbon chain, saturated fatty acids have a chain length determined by the number of carbon atoms with a maximal number of hydrogen atoms.
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other component of our blood type is the Rh factor. Some people have Rh positive blood and
others have Rh negative blood. The Rh factor is determined by one gene with two alleles. The allele
Home work allele and "y" to represent the r
for Rh positive is dominant over the allele for Rh negative. Let's use "R" to represent the positive
negative allele.
IR
|v
118
Ir
Work this problem: A woman whose blood type is AB negative marries a man with blood type O
positive. The man's mother had blood that was A negative.
What is the genotype of the woman?
10 |^ TV
What is the genotype of the man?
TIR
What is the genotype of the man's mother?
Alrr
What types of children might this man and woman expect to have?
1or 11°r
Genotypes
Phenotypes
The genotype of the woman with AB negative blood is IAi.
The genotype of the man with O positive blood is ii.
The genotype of the man's mother with A negative blood is IAi.
This man and woman could expect to have children with blood types A, B, AB, or O, but all of them would be Rh negative as the negative allele is recessive. The genotypes of their children could be IAi, IBi, IAi/IBi (AB), or ii (O) and the phenotypes would be A negative, B negative, AB negative and O negative respectively.
What is a genotype?A genotype is the genetic makeup of an organism, or the specific combination of alleles that an organism carries for a particular gene or genes.
A genotype can also be defined as the genetic makeup of an individual, specifically the combination of alleles that an individual inherits from their parents for a particular gene or group of genes.
It describes the genetic instructions that determine the characteristics of an organism. It can be represented by letters, such as A, B, C, etc. to represent different versions of a gene and different genotype combinations are represented by different letter combinations (e.g. AA, Aa, aa).
Therefore, the correct answer is as given above
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describe the effects that enzymes can have on substrates
Please do everything in the picture below.
I wrote the answer in the photo.
Please describe this picture using directional terminology, body planes and body movements.
The human body is a complex organism and understanding its structure and functions requires a thorough knowledge of directional terminology, body planes, and body movements. In this image, we can see a person performing a side plank exercise which is an effective core-strengthening exercise.
We can also use directional terminology to describe the person's movements. The person is performing a lateral flexion to the side while maintaining an isometric contraction of the core muscles. The movement involves the transverse axis of the body, which runs from front to back, perpendicular to the frontal plane.
In conclusion, this picture shows a person performing a side plank exercise, positioned on the frontal plane and performing a lateral flexion movement. The person is using their core muscles to maintain the position while one arm is supporting their weight and the other arm is extended towards the ceiling.
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Please just label tanks :)
Answer:
ok
Explanation:
Hans is 75 years old. He is suffering from a degenerative disease that is characterized by muscular rigidity and tremors. Hans has trouble moving and sitting up straight. His doctor, Dr. Ross, suspects that Hans's condition is a result of the degeneration of the neurons within the basal ganglia of his brain. Based on the information provided in this scenario, Dr. Ross is most likely to diagnose Hans with
Based on the information provided in this scenario, Dr. Ross is most likely to diagnose Hans with Parkinson's disease.
Parkinson's disease is a brain condition that results in unintentional or uncontrollable movements like trembling, stiffness, and issues with balance and coordination.
Typically, symptoms start out mildly and get worse over time. People could experience difficulties speaking and walking as the illness worsens. Additionally, they may have behavioural and mental changes, sleep issues, depression, memory loss, and weariness.
Although almost anyone is at risk of acquiring Parkinson's, certain studies indicate that men are more likely than women to be affected by this condition. It's unknown why, but research is being done to identify potential risk factors. Age is an obvious risk: Although roughly 5% to 10% of Parkinson's patients suffer beginning before the age of 50, the disease often first manifests in those over the age of 60.
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Globalization of the economy is increasing because of which of these
factors?
A. Agreements limiting immigration
B. Advances in internet technology
C. A decrease in demand for resources
D. Treaties limiting international trade
Answer:
Explanation:
B. Advances in internet technology - it allows ppl to order stuff from all over the world.
The globalization of the economy is increasing due to the reduction in the demand for resources. So, the correct option is C.
What is Globalization?Globalization is defined as the process by which people and goods move easily across borders which is an economic concept which is the integration of markets, trade and investment with the aim of slowing the flow of products and services between nations where there are some constraints.
The effect of globalization is that it promotes increased interaction between different regions and populations around the world. The globalization of the economy is increasing due to the reduction in the demand for resources.
There are three types of globalization.
Economic globalizationPolitical globalizationCultural globalizationTherefore, the correct option is C.
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which condition results in lung tissue filling up with fluid or pus, inflammatory cells, and fibrin?
Option 1 is Correct. Acute lung inflammation that occurs in the alveoli of the deep lung is known as pneumonia.
There is an inflammatory reaction that, in the most basic sense, is a collection of pus when a tissue is infected or wounded. Pus builds up in the deep lungs when they are hurt or infected. Lung tissue inflammation is referred to generally as pneumonitis.
Since the infection produces inflammation, pneumonia is technically a form of pneumonitis. When germs enter the pleural area, empyema, also known as pyothorax or purulent pleuritis, forms.
An empyema, a more serious and potentially fatal condition, can develop from a pleural effusion, also known as "water on the lung." Empyema generally results from surgery or an infection like pneumonia.
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Correct Question:
Which condition results in lung tissue filling up with fluid or pus, inflammatory cells, and fibrin?
1. Pneumonia
2. Acute bronchitis
3. Tracheitis
4. Acute rhinitis
Within a decade of the introduction of a new insecticide, nearly all of the descendants of the target pests were immune to the usual-sized dose. The most likely explanation for this immunity to the insecticide is that…?
Answer:
mqa-vivn-jei
Explanation:
truth and dare?
Answer - d: the pests developed physiological adaptations to the insecticide
Explanation: Pests become resistant by evolving physiological adaptations that protect them from the chemical.
A protein has the following sequence: ser-his-thr-tyr. What component of protein structure is this?
The protein with the linear chain sequence ser-his-thr-tyr represents the primary structure of the protein.
Proteins are the biomolecules that are made up of amino acids as the monomers. Proteins are the most essential biomolecules as they are involved in all the processes of the living organisms. They have structural, enzymatic and various other roles.
The proteins is made up of four levels of structures: primary, secondary, tertiary and quaternary. Primary structure is the one where the proteins exists as a linear chain of amino acids linked together by peptide bond. The primary structure is most essential as it decides the fate of further structures and also the function of the protein.
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A race car travels around a track. It went 20 meters east in 1 second. What was his velocity?
A. 0.05 m/s
B. 20 m/s east
C. 0.05 m/s east
D. 20 m/s
B. 20 m/s east
This is the answer.
Answer:
The answer is 20m/s east or B
Genes can be activated by the environment to change an organism's fur coat color from white to brown. What factor of the environment causes this change?
Answer: There are multiple. Light, temperature and pollution are what I believe you're looking for.
Explanation: Factors such as light, temperature and pollution could permanently alter our DNA and gene expression, particularly as climate change continues. Similarly, drugs and chemicals can alter gene expression. All of the above are considered environmental factors.
Mechanical stress on weight-bearing bones plays a large part in bone remodeling. What single factor plays the largest role in maintaining adequate bone strength?.
Mechanical stress on weight-bearing bones plays a large part in bone remodeling. Gravity is the single factor that plays the largest role in maintaining adequate bone strength.
It is the function of gravity to provide mechanical stress or load to the bones. It is the result of this mechanical stress that bones get the specific density that is required for support.
It is due to this reason that astronauts tend to exercise regularly in space so that their bone density can be maintained.
If bone density is not maintained by gravity, then bones can lose their strength, and hence a body will difficulty in support and movement.
Bones have the ability to reshape and remodel themselves. Hence, constant stress shall be applied to them for their strengthening. Gravity acts as a single factor that is continuous in applying stress to the bones.
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Please help! how does a cell control gene expression through transcription?
A. by preventing the production of mrna molecules
B. by preventing mrna from binding to ribosomes
C. by preventing the binding of amino acids
D. by changing how a protein is folded
Answer: A. by preventing the production of mRNA molecules
Explanation:
In order to control gene expression through transcription, a cell can regulate the production of mRNA molecules. This control is achieved through various mechanisms:
1. Cells can produce transcription factors that bind to specific DNA sequences called promoter regions. These transcription factors can either enhance or inhibit the binding of RNA polymerase, the enzyme responsible for transcribing DNA into mRNA. By controlling the availability and activity of transcription factors, the cell can regulate the initiation of transcription and thus control which genes are expressed.
2. The DNA in the cell is packaged into a complex called chromatin, which consists of DNA wrapped around histone proteins. The cell can modify the structure of chromatin through processes such as DNA methylation and histone modifications. These modifications can either promote or inhibit the accessibility of DNA to transcriptional machinery, thereby influencing gene expression.
3. Cells can use small RNA molecules, such as microRNAs (miRNAs) and small interfering RNAs (siRNAs), to regulate gene expression at the transcriptional level. These small RNAs can bind to mRNA molecules and prevent their translation into proteins or promote their degradation, leading to reduced expression of the corresponding genes.
While options B, C, and D are involved in other stages of gene expression or protein synthesis, they are not directly related to controlling gene expression through transcription. Therefore, the most accurate answer is option A, by preventing the production of mRNA molecules.
As blood volume decreases, blood pressure ____________ . If greater than ____________ of the blood volume is lost from the blood vessels, the ____________ division of the autonomic nervous system (ANS) is activated, bringing about ____________ vasoconstriction of blood vessels, increased heart rate, and force of heart contraction in an attempt to maintain blood ____________ . These processes are effective in maintaining blood pressure until approximately _______
Explanation:
Decreases, 40%, Sympathetic, Increased, Pressure, 10%.
Which bones do these cartilage disks connect? Why are these cartilage disks important?
Why is it a good idea for humans to create models of how populations are changing?
What do models help us do?
What are the three categories of contaminates?
Answer:
Here are the three types of contaminants: Biological: Examples include bacteria, viruses, parasites, fungi, and toxins from plants, mushrooms, and seafood. Physical: Examples include foreign objects such as dirt, broken glass, metal staples, and bones. Chemical: Examples include cleaners, sanitizers, and polishes.
Explanation:
the smallest taxa with the least differences is the
Answer:
Species
Explanation:
In order there are seven main taxonomic ranks: kingdom, phylum or division, class, order, family, genus, species.
Species is the smallest and least inclusive, kingdom being the most inclusive.
There is a graph below.
Hope this helps!
Cellular respiration is essential for the survival of the Euglena. Why?
Please help me.
Answer:
This organism is able to carry out both photosynthesis and cellular respiration. That's why cellular respiration is essential for the survival of the Euglena.
A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions.
What is cellular respiration?Glycolysis, the citric acid cycle, and oxidative phosphorylation are the three basic processes that take place during cellular respiration. The citric acid cycle happens in the mitochondrial matrix, oxidative phosphorylation happens on the inner mitochondrial membrane, and glycolysis happens in the cytoplasm.
Glucose, ATP, and NAD+ are the initial reactants and ATP and H2O are the end products of cellular respiration. The enzymes phosphofructokinase-1, pyruvate dehydrogenase, and isocitrate dehydrogenase control the rate of cellular respiration.
Disorders that interfere with cellular respiration often impair one or more of the enzymes necessary for it, such as succinyl-CoA synthase or pyruvate kinase.
Therefore, A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions.
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What is the relationship between a protein, the cell, and DNA?
A. DNA is produced by a protein which is produced in the cell
B. Protein is composed of DNA which is produced in the cell
C. A cell is composed of DNA and protein
D. DNA controls the production of protein in the cell
Answer:
B. Protein is composed of DNA which is produced in the cell
Explanation:
Answer:
B. Protein is composed of DNA which is produced in the cell
Explanation:
The option (B) is the relationship between a protein, the cell, and DNA.
examine the five words and/or phrases and determine the relationship among the majority of words/phrases. choose the one option that does not fit the pattern. group of answer choices lower rates of photosynthesis increased phosphorus concentration high light levels increased nitrogen concentration upwelling
Examine five words and/or phrases and determine the relationship between most of the words/words. Here the upwelling does not fit the pattern. Here option E is the correct answer.
The majority of the words/phrases are related to the factors that can affect the rate of photosynthesis in plants. Photosynthesis is the process by which plants convert light energy into chemical energy, using carbon dioxide and water to produce glucose and oxygen.
Lower rates of photosynthesis indicate a decrease in the amount of light energy that is converted into chemical energy. This can be caused by various factors, including insufficient light, water, or nutrients. Increased phosphorus concentration, high light levels, and increased nitrogen concentration, on the other hand, are all factors that can increase the rate of photosynthesis by providing the necessary nutrients and energy for the process.
Upwelling, however, does not fit this pattern as it is not a direct factor that affects photosynthesis in terrestrial plants. Upwelling refers to the movement of cold, nutrient-rich water from the bottom of the ocean to the surface, which can provide nutrients for marine plants. However, terrestrial plants do not directly benefit from this process as they do not have access to nutrient-rich water.
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Complete question:
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. choose the one option that does not fit the pattern. group of answer choices
A - lower rates of photosynthesis
B - increased phosphorus concentration
C - high light levels
D - increased nitrogen concentration
E - upwelling
8. All seeds hove seed or fruit to protect them as they grow. How do seeds grow? 9. The of a plant begins with a seed. 10. The way plants grow, five, and is called their life cycle. 11. Most seeds need water, food, and a little heat to become new plants. 12. A new plant has the same life cycle as its plant. Critical Thinking 13. How ore new plants that grow from seeds like their parent plonts?
Seeds grow with the help of various natural resources like water, oxygen, and sunlight, which help them to sprout and grow roots and develop into new plants. Some seeds grow as soon as they land in the ground, while others need a specific time period to grow.
The life of a plant begins with a seed that contains the necessary resources required for the plant's growth, which includes the embryo, endosperm, and protective seed coat.
The process through which plants grow, reproduce, and die is called their life cycle. It includes different stages like germination, growth, flowering, pollination, fertilization, seed production, and dispersal.
Seeds need water, food, and a little heat to grow into new plants. Water helps seeds to soften and expand, and food helps them to provide the necessary nutrients required for growth. The heat helps seeds to break dormancy and activate enzymes that speed up the germination process.
A new plant has the same life cycle as its parent plant. Plants have a unique life cycle, and every stage of the life cycle is essential for their growth and development. New plants inherit their genetic traits from their parent plants, and their life cycle is the same as that of their parent plant.
New plants that grow from seeds inherit their genetic traits from their parent plants and have the same life cycle as their parent plants. The life cycle of a plant includes the stages of germination, growth, flowering, pollination, fertilization, seed production, and dispersal. Thus, new plants that grow from seeds are like their parent plants.
How Clark Developed Seizures
The following list is not in the correct order. The first three events are numbered correctly. Drag and drop the
remaining events in the order that led to Clark's seizures.
picture above for the order.
Answer:
4. Low blood sodium concentration
5. Net movement of free water into the matrix
6. Increased matrix pressure
7. Abnormal neuron firing rate
8. Seizures
Explanation:
Seizures are defined as the common complication of drug intoxication.
As per the clinical observations for Clark , normal blood and matrix sodium concentration lose sodium ions due to diarrhea. As given too much water causes sodium levels to decrease. Due to lower sodium concentration, the free water move into the matrix and increased matrix pressure. This pressure causes the abnormal neuron firing rate to increase which causes seizures.
Hence, the correct order is:
4. Low blood sodium concentration
5. Net movement of free water into the matrix
6. Increased matrix pressure
7. Abnormal neuron firing rate
8. Seizures
Which of the following does not exist during prophase?. Single choice.
A. Condensation of chromatins
B. Disappearance of nuclear membrane
C. Pairing of homologous chromosome
D. Chromosomes lined up in the middle of the cell
Option 2
Answer:
Option B.
Disappearance of nuclear memberane.
Explanation:
This is because Prophase is marks the beginning of mitosis, and it is the process where replicated genetic contents are separated into daughter cells. During prophase, ttgere is condensation of chromatin. The chromatin coils and it become compact, which lead to the formation o chromosomes that are visible. The sister chromatids are joined together at the centromere. The mitotic spindle begins to form. The mitotic spindle is consist of long proteins called microtubules that firms at opposite end. The spindle separate the two sister chromatids.
Classify the hypothesis about the dwarf planet Pluto as falsifiable or non-falsifiable
The hypothesis about the dwarf planet Pluto is falsifiable. This means that the hypothesis can be tested through experiments or observations to determine whether it is true or false.
The hypothesis that Pluto is made of ice, can be tested by observing the planet's surface and analyzing its composition. If the results show that Pluto is not made of ice, then the hypothesis is proven false.
On the other hand, a non-falsifiable hypothesis is one that cannot be tested or proven false. For example, if the hypothesis is that Pluto is the most beautiful planet in the solar system, this cannot be tested or proven false because beauty is a subjective concept and cannot be measured objectively.
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How do you think the theory of natural selection may be different today if Alfed Russell Wallace had published his findings first?
Answer:
If Alfred Russel Wallace had published his findings on natural selection before Charles Darwin, it's possible that Darwin's role in the development of the theory would have been less prominent. However, it's difficult to predict the exact impact on the theory, as scientific discoveries and theories are often the result of cumulative work and contributions from multiple researchers. Nonetheless, both Wallace and Darwin made significant contributions to evolutionary theory.
Explanation:
Alfred Russel Wallace and Charles Darwin together developed the theory of natural selection and presented.If Wallace would have publish his findings, the theory of natural selection would still have been established, but Darwin's role would have likely been minimized.
However, it's important to note that scientific discoveries and theories are often the result of cumulative work and contributions from various researchers, so it's difficult to predict how the theory of natural selection would have been impacted if Wallace had published his findings first. It's possible that the theory would have been more or less widely accepted or that the details of the theory would have been different. Nonetheless, both Wallace and Darwin made significant contributions to the development of evolutionary theory, and their work continues to be celebrated and studied today.
Which events must happen prior to the start of mitosis?
Prior to the start of mitosis, the cell undergoes interphase, which includes G1, S, and G2 phases.
Prior to the start of mitosis, several events must occur to ensure the cell is prepared for the division process. These events are collectively known as interphase, which is the phase preceding mitosis. Interphase can be further divided into three distinct stages: G1 phase, S phase, and G2 phase.
During the G1 phase (Gap 1), the cell grows in size, carries out its normal functions, and prepares for DNA replication. It synthesizes proteins and organelles needed for cell division.
G1 is a critical checkpoint where the cell assesses external signals and internal conditions to determine if it should proceed with the cell cycle.
The S phase (Synthesis) follows G1 and is characterized by DNA replication. The cell duplicates its chromosomes to ensure that each daughter cell receives a complete set of genetic material.
DNA replication is a precise process that occurs in the nucleus and involves the unwinding of the DNA double helix, synthesis of complementary DNA strands, and formation of two identical copies of each chromosome.
After DNA replication, the cell enters the G2 phase (Gap 2), during which it continues to grow and prepares for mitosis.
Additional organelles and proteins necessary for cell division are synthesized, and the cell undergoes further checks and preparations for proper chromosome segregation.
Once these events in interphase have occurred, the cell is ready to proceed to mitosis. Mitosis consists of several distinct stages, including prophase, prometaphase, metaphase, anaphase, and telophase, during which the duplicated chromosomes are separated into two daughter cells.
During interphase, the cell grows, carries out its functions, replicates its DNA during the S phase, and prepares for mitosis by synthesizing necessary components. Interphase is a crucial preparatory phase that ensures the proper division of genetic material during mitosis.
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