Introduction to Biology: Lipids.
Lipids are biomolecules insoluble in water, but soluble in nonpolar solvents. This means they don't mix with water, but can dissolve in other types of solvents.
They are hydrocarbons, which means they are made mostly of carbon and hydrogen.
Some types of lipids are:
• Fatty acids
,• Glycerolipids
,• Glycerophospolipids
,• Sphingolipids
,• Sterols
,• Prenols
,• Saccharolipids
,• Polyketides
So, the right answer would be C. unable to mix with water.
Explain how enzymes assist the process of absorption.
Enzymes play a crucial role in the process of absorption by breaking down large molecules of food into smaller, more easily absorbable molecules.
In the digestive system, enzymes are produced by specialized cells and secreted into various parts of the digestive tract. For example, enzymes such as amylase and lipase are secreted into the mouth and small intestine, respectively, to break down carbohydrates and fats.
Once the food molecules are broken down into their smaller components, they can be more easily absorbed through the walls of the digestive tract and into the bloodstream. Enzymes also help to facilitate the movement of these molecules across the cell membrane and into the cells of the body, where they can be used for energy or stored for later use.
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using these images describe how variations in the flow of energy into and out of earths systems risky in changes in climate
write a short description about how i represented each factor
The average global temperature of Earth rises as the energy input exceeds the energy output from the Earth system.
How vital is the Earth System?The word "Earth system" refers to the interconnected physical, chemical, and ecological processes that take place on Earth. The system is made up of the poles, the atmosphere, the oceans, and the land. The natural cycles of the earth, such as those for carbon, water, nitrate, phosphorus, and sulfur, as well as deep Earth activities, are included.
What are the fundamental elements of the Earth system?Earth is made up of five main components or subsystems, including the Atmosphere, Hydrologic cycle, Biosphere, Cryosphere, & Geosphere. Earth is also embedded within much bigger systems, such as our Solar System & Milky Way Galaxy.
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You’re stranded in the desert and see an oasis. It’s your only source of water to drink. Upon further inspection, you discover it has a high concentration of salt. Do you drink it? Why or why not? Describe the process of osmosis in your answer.
what do you think would be a LIMITING FACTOR for elk populations in Yellowstone and why
2. Which method in biotechnology is used to modify existing strands of DNA in a living organism? O A. Synthetic biology B. DNA synthesis C. Genetic modification D. DNA sequencing
Answer:
C. Genetic Modification
Explanation:
The act of modifying existing stands of DNA in a living organism is called, " Genetic Engineering". In this case since this option isn't available C. Genetic Modification is a synonym.
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1. Houston houses some of the largest petrochemical plants in the United States. These factories are often found near residential neighborhoods. One survey found that factories are
more likely to be located near poorer neighborhoods because it's less complicated to obtain permits to locate there, and there's generally less public resistance. How does this practice
go against the goals and purpose of environmental policy?
A. It goes against the law of social responsibility,
B. It goes against polluters' rights to place their factories wherever they like
C. It treats people unequally under the law, according to income, which is unjust.
D. It goes against the principle that factories should be located where they cause the least damage.
I believe that a revolution should be needed to address an unjust law, It is unfair to treat people differently under the law depending on their income, hence option C is correct.
What is unjust law?According to a sociological study, parenting is more challenging in disadvantaged communities, and children from those areas are more prone to run into legal issues.
I believe that a revolution should be needed to address an unfair law, this is not because they are being overly self-centered about it.
it is because it is the proper thing for people to have a just law in order for them to live in a location where peace and order are significant alongside each citizen's freedom and rights.
Therefore, It is unjust to treat people differently under the law depending on their income, hence option C is correct.
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Older rock layers contain fossils of many kinds of organisms that are not in younger rock layers. What most likely happened to the kinds of organisms that became fossilized? A. They evolved into new organisms that could not become fossilized. OB. They stopped becoming fossilized because their environment changed. OC. They formed fossils in the younger rock layers, but those rock layers broke down. D. They became extinct, so they did not exist when the younger rock layers formed.
They became extinct, so they did not exist when the younger rock layers formed. Option D.
The most likely scenario based on the information provided is that the organisms that became fossilized in older rock layers became extinct, and therefore, they did not exist when the younger rock layers formed.
Fossils are the preserved remains or traces of organisms from the past, and they provide valuable insights into the history of life on Earth. The distribution of fossils in rock layers follows the principle of superposition, which states that younger rock layers are deposited on top of older ones.
This implies that the fossils found in older rock layers represent organisms that lived in the past and were preserved through the fossilization process.
If the older rock layers contain fossils of many kinds of organisms that are not found in younger rock layers, it suggests that those organisms no longer existed by the time the younger rock layers formed. The absence of their fossils in younger layers indicates that either the organisms became extinct or their populations shifted to different habitats or regions where their remains were not preserved as fossils.
This phenomenon aligns with the concept of extinction, which is the complete disappearance of a species or a group of organisms. Extinction can occur due to various factors such as environmental changes, competition, predation, or other selective pressures.
Organisms that became extinct would not be present in subsequent rock layers because they were no longer alive or did not have a viable population to leave behind fossil remains.
Therefore, the most reasonable explanation is that the organisms that became fossilized in older rock layers became extinct, and this is why they are not found in younger rock layers. SO Option D is correct.
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What happens during the S (synthesis) phase of interphase?
a. the cell rests before it moves to a level of high activity
b. the cell creates copies of its DNA or genetic material
c. the cell divides into two new cells
d. the nucleus divides in half
b. the cell creates copies of its DNA or genetic material
During the S (synthesis) phase of interphase, the cell undergoes DNA replication. This means that the cell creates copies of its DNA or genetic material. The DNA in the cell is duplicated to ensure that each daughter cell produced during cell division will receive a complete set of genetic information. This phase is critical for cell division and the transmission of genetic material to offspring cells.
Which amphibian is the scientist most likely observing? A scientist is observing an amphibian. It has brightly colored skin, four legs, sticky pads on its feet, and a long, narrow body, a salamander because it has sticky pads on its feet O a salamander because it has a long, thin body O a frog because it has four legs O a frog because it has brightly colored skin
Answer:
B
Explanation:
After arousal by a sensory stimulus, consciousness can be maintained by positive feedback, because of activity in the
Answer:
This question lacks options, options are:
A) cerebral cortex.
B) basal nuclei.
C) sensory pathways.
D) motor pathways.
E) All of the answers are correct.
The correct answer is E.
Explanation:
The cerebral cortex processes and filters its information before passing the most relevant aspects to other regions of the brain. Some of these brain regions, in turn, send information back to the cortex. These loops, known as 'feedback systems', are considered essential for the functioning of cortical networks and their adaptation to new sensory information. Neural circuits must first assess the importance of incoming sensory information and then refine how it is processed in the future. Positive feedback, triggered with the purpose of amplifying the response to the initial stimulus, can be compared to a chain reaction or a vicious circle. Few are the functions regulated by this mechanism; rather it is triggered in pathological situations. It is the system by means of which the organism very rarely regulates any of the bodily functions under normal conditions, making the initial stimulus to be maintained and even increased. This type of mechanism is predominantly present in pathological situations: Its constitutive elements are: stimulus, receptor, afferent pathway, integrating center, efferent pathway, effector and response. The response does not have the ability to satisfy the initial stimulus.
This table is most likely to be comparing which of the following?
Observation #1
Cattails
Geese
Weeds
Snapping turtles
Raccoons
Observation #2
Pond
Rocks
Foxes
Grasses
Lily pads
A. A community and a pond
B. A community and an ecosystem
C. An ecosystem and a biome
D. An ecosystem and a pond
The table is most likely to be comparing a community and an ecosystem. Thus, option B is correct.
What is ecosystem?When biotic and abiotic components are linked together by energy flow and through nutrient cycle it is called as an ecosystem. Ecosystem consist of the organisms and the physical environment they interact.
A community is said to be group of one or more species interacting in the same geographical area at the same time. It is also known as biotic community or biological community.
Therefore, observation 1 shows community and observation 2 shows an ecosystem and option B is correct.
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In some bunnies, the gene for fur color is controlled by condominance. The allele for gray color is G and the allele white color is W. The heterozygous phenotype results in a gray and white bunny/ What is the genotype for gray bunnies? what is the genotype for white bunnies? what is the genotype for gray and white bunnies?
Answer:
Genotype gray bunnies: GG
Genotype white bunnies: WW
Genotype gray and white bunnies: GW
Explanation:
In diploid species (2n), organisms receive one gene copy (allele) from each parent. Codominance is a relationship that occurs when both alleles of the same gene show dominance. In consequence, the expression of both alleles in heterozygous individuals results in a new phenotype. In this example, the expression of G and W alleles results in a gray and white phenotype. Examples of codominance include individuals with type AB blood group in humans or the roan coat color in horses.
Answer:
Genotype gray bunnies: GG
Genotype white bunnies: WW
Genotype gray and white bunnies: GW
Explanation:
In diploid species (2n), organisms receive one gene copy (allele) from each parent. Codominance is a relationship that occurs when both alleles of the same gene show dominance. In consequence, the expression of both alleles in heterozygous individuals results in a new phenotype. In this example, the expression of G and W alleles results in a gray and white phenotype. Examples of codominance include individuals with type AB blood group in humans or the roan coat color in horses.
All living things begin as two cells. True False
Answer:
True
Explaination:
The idea that all living things are made up of cells which can only come from other living cells, is known as cell theory. All living things are made up of cells.
there are 16 chromosomes in the model. target 1 of 7 the color codes in this model will help to show independent assortment. blanktarget 2 of 7 during metaphase i, there will be four pairs of chromosomes (tetrads) aligned at the metaphase plate.blanktarget 3 of 7 the chromosomes in the model are replicated. blanktarget 4 of 7 in this model, the color codes emphasize that two homologous chromosomes contain the same genes. blanktarget 5 of 7 in this model, the color codes emphasize that two homologous chromosomes contain the same alleles. blanktarget 6 of 7 since independent assortment can occur in different ways during meiosis, two people could come up with different color-combinations of chromosomes in their drawings of gametes, and both be correct. blank
The cell cycle is a series of four stages during which the cell enlarges.
According to Mendel's law of independent assortment, the alleles of two or more different genes are said to be sorted into gametes in a way that is wholly independent of one another. A gamete's allele for one gene has no bearing on the allele it acquires for another gene. Thus, the sentences can be categorized as -
1. There are 16 chromosomes in the model True
2. The color codes in this model will help to show independent assortment True
3. During metaphase I. there will be four pairs of chromosomes (tetrads) aligned at the metaphase plate False
4. The chromosomes in the model are replicated False
5. In this model, the color codes emphasize that two homologous chromosomes contain the same genes True
6. In this model, the color codes emphasize that two homologous chromosomes contain the same alleles False
7. Since independent assortment can occur in different ways during meiosis, two people could come up with different color-combinations of chromosomes in their drawings of gametes, and both be correct True
Complete Question:
Fill in the blanks with "True" or "False" to the end of each statement.
1. There are 16 chromosomes in the model____________.
2. The color codes in this model will help to show independent assortment______.
3. During metaphase I. there will be four pairs of chromosomes (tetrads) aligned at the metaphase plate___________.
4. The chromosomes in the model are replicated________.
5. In this model, the color codes emphasize that two homologous chromosomes contain the same genes_________.
6. In this model, the color codes emphasize that two homologous chromosomes contain the same alleles____________.
7. Since independent assortment can occur in different ways during meiosis, two people could come up with different color-combinations of chromosomes in their drawings of gametes, and both be correct_____________.
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Question 1 A heterozygous yellow-seeded plant is crossed with a homozygous yellow seeded plant. i. ii. Question 2 Complete the punnet square and write the genotypic and phenotypic ration for the possible offsprings. (3 marks) Genotypic ration Phenotypic ration What is the probability of having a pure breeding green seeded offsprings (2 marks) What is the probability of having a yellow-seeded plant in F2 generation, when a true breeder from F1 is crossed with a non-true breeding yellow seeded plant? (2 marks)
Answer:
Explanation:
To solve this problem, let's represent the heterozygous yellow-seeded plant as "Yy" and the homozygous yellow-seeded plant as "YY."
i. When crossing a heterozygous yellow-seeded plant (Yy) with a homozygous yellow-seeded plant (YY), we can set up a Punnett square to determine the possible offspring genotypes:
Y Y
y Yy Yy
y YY YY
ii. The genotypic ratio is 2:2 or 1:1 for the possible offspring genotypes: Yy and YY.
The phenotypic ratio is also 2:2 or 1:1 for the possible offspring phenotypes: yellow-seeded (YY and Yy).
Question 2:
To determine the probability of specific outcomes, we need additional information about the parental genotypes and their inheritance patterns. Please provide the genotypes of the true breeder from F1 and the non-true breeding yellow-seeded plant for a more accurate calculation.
What dosage schedule is represented by the graph below?
A. One pill every hour.
B. One pill every 3 hours.
C. One pill every 5 hours.
D. One pill every 7 hours.
The graph shows that there is a peak approximately every 5 hours. This means that the medication is taken once every 5 hours, C. One pill every 5 hours.
What is dosage schedule?A dosage schedule is a plan for how often and how much of a medication to take. It is important to follow the dosage schedule exactly as prescribed by a doctor, as taking too much or too little of a medication can be dangerous.
Dosage schedules can vary depending on the medication, the patient's age and weight, and the condition being treated. Some medications are taken once a day, while others are taken multiple times a day. The dosage may also be adjusted over time, depending on how the patient is responding to the medication.
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1) What is the difference between traits and characteristics?
2) Can people with different parents still have traits in common?
3) You have a plant with yellow flowers and a tall stem. However, it is wilted because you forgot to water it. Identify which of the described traits of the plant is/are example(s) of those determined by heredity and those determined by the environment.
Answer:
1) the difference between trait and characteristic is that trait is an identifying characteristic, habit or trend while characteristic is a distinguishable feature of a person or thing.
2) Yes people with different parents still can have traits in common, for example two friends can both have a cleft-chin or a widows-peak.
3) The traits in this situation is the color of the flower (yellow), and the tall stem. But, the environmental part is the wilted part due to the dry environment(the lack of water).
Explanation:
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Please answer!! i need help so bad. please!!!
The purple kernel is dominant over the yellow kernel and hence it has the genotype of homozygous dominant PP.
What is Genotype?Genotype may be defined as the ultimate combination of alleles of genes that are selected for specific studies.
If it has some offspring with purple kernels and some with yellow, the genotypes of the two parents are heterozygous dominant for the purple kernel, i.e. Pp and Pp.
And when these two parents are crossed with each other, the genotypes are PP, Pp, Pp, and pp. While the genotypic ratio is 1:2:1 (PP: Pp: pp), but the phenotypic ratio is 3:1 (Purple: Yellow).
Therefore, it is well described above.
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You have a cup of beans in front of you with 20 white beans and 20 red beans. (You can also use candy, buttons, or coins). These beans represent the alleles for a simple Mendelian trait, where red is dominant (R) and white is recessive (r). The cup holds the alleles for an entire population (the gene pool).
Assess the gene pool. How many alleles of each kind are present in your overall population?
1. Dominant: 0, Recessive: 40
2. Dominant: 40, Recessive: 0
3. Dominant: 20, Recessive: 20
4. Dominant: 20, Recessive: 0
5. Dominant: 0, Recessive: 20
Answer:
Number 3
Explanation:
Dominant: 20, Recessive: 20
An allele is the alternative of a gene. On his case, these beans represent the alleles for a simple Mendelian trait, where red is dominant (R) and white is recessive (r).
As states earlier there are 20 red beans (20 dominant alleles) and 20 white beans (20 recessive beans) and each beach represent an allele.
The pedigree below shows inheritance of an X-
linked trait in a family. Based on the inheritance
pattern, what is the genotype of the person in
generation III (third generation), letter b?
Generation
11
111
TOOOD
500
Pedigrees have multiple uses. One of them is getting to know an individual's genotype. In the e xposed example, the individual IIIb is X-Y.
What is a pedigree?
A Pedigree is the representation of a family's history. This graph is used to track a trait through different generations, and analyze the inheritance pattern of a particular gene and its expression.
It is a tool used to understand how genes are transmitted from the parental generation to the descendants, and what are the probabilities of inheriting them.
In sex linked inheritance, we need to remember that the gene coding for the trait is linked to the sex-chromosome (in this case, the X-chromosome).
In pedigrees, usually affected individuals or individual carring the trait are representes with solid black figures.
Individual IIIb is a black square, meaning it is an affected man. Its genotype is X-Y. The X-chromosome is carrying the recessive allele (-).
In the attached files you will find the pedigree with the genotype of each member of the family. Notice that individuals X+X represent either homozygous dominant or heterozygous females.
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Which of Earth's layers is the deepest?
A. Outer core
B. Inner core
C. Mantle
D. Crust
Answer:
B. The Inner Core
Explanation:
Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust.
what is the answer???
Answer: 1 and 3
Explanation: i hope this helped also if you want to support me please pick me as the brainlyest
Match each form of energy with its description.
radiant energy
lightning produced during a storm
a box moving along a conveyor belt
gravitational potential energy
kinetic energy
a piece of fruit hanging from a tree
radio waves transmitted from a tower
electrical energy
sand on the beach feels warm
to the touch
thermal energy
Answer:
Electrical Energy --> lighting produced during a storm
Radiant Energy --> radio waves transmitted from a tower
Gravitational potential energy --> a piece of fruit hanging from a tree
Kinetic energy --> a box moving along a conveyor belt
Thermal energy --> sand on the beach feels warm to the touch
Explanation:
I will now go back to watching Mob psycho 100..
Which best describes the structure of DNA?
A.It has a double helix with repeating bases
B.It has a triple helix with repeating bases
C.it has a double helix with a single base
B.It has a triple helix with a single base
Answer: A
Explanation:
The double helix describes the structure of DNA.Apr
. Can plants produce other sugars as well? Explain.
Plants produce sugar and oxygen in a process called photosynthesis, by using sunlight, water, and carbon dioxide. ... In a two-step process, plants obtain chemical energy from sunlight. The collected energy is used in a second reaction to produce the sugar glucose
Do only living things contain DNA? Explain.
Answer:
yes because objects have atoms
Explanation:
Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living things. All known cellular life and some viruses contain DNA.
Read the information for transcription and then answer the question.
Protein Synthesis
Explain the process of transcription
Answer:
Protein synthesis is the process which synthesizes proteins by the information coded in the DNA molecule with the help of two distinct process takes place in order namely transcription and translation.
Transcription is the first process of the central dogma or the protein synthesis that produces mRNA molecule that carries all the information stored in the DNA molecule out of the nucleus (in eukaryotes only) to the ribosome where the second process Translation takes place.
Untwists then unzips of DNA molecule is catalyzed by RNA polymerase result in the Hydrogen-bonds between the strands break .
Creates complementary base pairs with bases of the DNA strand with help of free RNA nucleotides
weak hydrogen bonds and sugar-phosphate bonds form between base pairs and RNA nucleotides respectively
mRNA strand is synthesized and peels off the DNA and transported or pass from the nucleus to cytoplasm
Answer:
Transcription converts
*DNA
*mRNA
*Nucleus
*Cell
in this order
Explanation:
The cell cycle involving mitosis would not be used for
asexual reproduction.
asexual reproduction.
sexual reproduction
sexual reproduction
cloning.
cloning.
wound repair.
wound repair.
the accumulation of more cells.
the accumulation of more cells.
answer: sexual reproduction
explanation:
mitosis is when a cell divides to create two exact same "daughter cells" - mitosis is needed for the accumulation of more cells, wound repair, cloning, and asexual reproduction
meiosis is when a cell divides to form gametes (egg or sperm) - meiosis is needed for sexual reproduction
Answer:
The correct answer is - sexual reproduction.
Explanation:
Mitosis is one of the cell cycle mechanisms that take place in the somatic cell and produce identical daughter cells by one parent cell. These daughter cells have the exact number of the chromosome as the parent cell. The main goal of mitosis is growth and replace the dead or worn-out cells.
It also helps in reproduction in various plant or animal cells through asexual reproduction or cloning, or binary fission, however, the process and mechanism are similar. In sexual reproduction mitosis type of cell cycle takes place in sex cells to produce gametes with half number of chromosome.
D
4) This diagram shows a food chain from a desert ecosystem in Arizona. The arrows show
how the matter eaten by organisms moves through the food chain.
western
diamondback
rattlesnake
Select each organism below that is a primary consumer in this food chain.
brittlebush
pallid-winged
grasshopper
ubmit
brittlebush
grasshopper mouse
red-tailed hawk
grasshopper
mouse
pallid-winged
grasshopper
red-talled
hawk
western diamondback
rattlesnake
Question
answere
28
Time
elapsed
PAUSE
Challeng
Stage 3 of
Get 5 corred
in a row
The primary consumers in the food chain are the organisms that eat the producers, which in this case are the brittlebushes. The primary consumers are the pallid-winged grasshoppers.
The other organisms in the food chain are secondary consumers (grasshopper mouse), tertiary consumers (red-tailed hawk), and apex predators (western diamondback rattlesnake).
Here is a diagram of the food chain with the primary consumers highlighted in green:
brittlebush (producer)
----------------------->
pallid-winged grasshopper (primary consumer)
----------------------->
grasshopper mouse (secondary consumer)
----------------------->
red-tailed hawk (tertiary consumer)
----------------------->
western diamondback rattlesnake (apex predator)
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Scenario 1:
Genetic engineering can be used to create more productive strains of farm animals used for milk and meat production. By adding genes to an animal’s DNA, the animal can be made to be more resistant to common infections. This can reduce the need to administer large doses of antibiotics to the animals.
Do you think that this type of genetic engineering should be pursued? Explain your answer. (5 points)
What are some possible impacts (positive and negative) of this type of genetic engineering on individuals, society, and the environment? (5 points)
Scenario 2:
Mike was adopted, and his biological family history is unknown. Although he is healthy, he would like some understanding of his genetic makeup, including potential health risks and genes that he could pass on to his children. Mike has heard about commercial laboratories that can compare segments of your DNA to those of people with common hereditary diseases in order to give you some idea of how susceptible you are to the diseases. The results of these types of tests are highly inconclusive. If Mike’s DNA showed that he shares similarities in a segment of DNA with people who have a given disease, his chances of developing that disease or passing it on to his children may be slightly elevated, but they are not 100 percent. These tests can cost more than $2,500 and are not covered by many insurance companies.
Do you think that Mike should undergo the genetic tests? Explain your answer. (2 points)
What are potential pros and cons of having such tests done? (5 points)
Describe how the availability of these genetic tests might affect the frequency of genetic diseases in individuals and populations. (3 points)
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