This suggests that sudden change that occur to the environment cause a different size animal to become the main species of that area.
Why the fossils of small skull organisms were found?This is because at that particular environment the small skull organisms can survive at that time as compared to big skull animals. The presence of a specific type of fossil in the soil layer shows that the fossil organism live at that time on this area due to the presence of good environmental conditions so we can conclude that environment was good for the small skull organisms at that time.
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1 point
2. Why does the sun and the moon appear to be the same size from Earth?
The sun is 400x wider than the moon, but the moon is also 400x closer to the Earth
than the sun
The moon is bigger than the sun.
The sun changes size throughout Earth's orbit.
They are the same size.
Answer:
The sun is 400x wider than the moon, but the moon is also 400x closer to the Earth
Explanation:
Although the the sun is roughly 400x wider than the moon, the moon is aproximately 400x closer to the Earth, and that is why seen from earth, sun and the moon appear to be the same size.
So answer is the sun is 400x wider than the moon, but the moon is also 400x closer to the Earth.
EXTRA:
There is a fenomenom called blood moon, when that happens, the moon appears to be bigger then normal (and it has a red glow about it).
Russell and Marco are trying to lift their friend Colin onto a tree branch. Russell is pushing
Colin upward with a force of 250'N. Marco is pushing Colin upward with a force of 310 N.
Earth's gravity is pulling Colin downward with a force of 520 N.
Assume all other forces on Colin are balanced. Which statement describes the forces on
Colin?
The forces are balanced, so there is no net force on Colin.
The forces are unbalanced, so there is a net force on Colin.
Answer:
Unbalanced
Explanation:
The forces acting upon Colin, his friends pushing and gravity, are unbalanced
If the sugar concentration in a cell is 4% and the concentration in a cell’s environment is 2%, how can the cell obtain more sugar?
For a cell to obtain more sugar the cell must use active transport to pump the sugar inside it .
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration which occur against the concentration gradient . So , it requires cellular energy to achieve this action.
Main function of active transport is involves the movement of molecules from a region of lower concentration to a region of higher concentration with help of energy in form of ATP. examples of active transport include the absorption of glucose in the intestine of the human body and the uptake of minerals or ions into the root hair cells of plants.
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Nucleic acids are composed of:
a: a phosphate group, a pentose sugar, a nitrogen base
b: a phosphate group, a pentose sugar, a carboxylic acid
c: a pentose sugar, a nitrogen base, an R group
d: a nitrogen base, an amino acid group, a carboxylic acid
Answer:
a phosphate group, a pentose sugar, a nitrogen base
Explanation:
nucleic acid is a polymeric macromolecule made up of repeated units of monomeric 'nucleotides' composed of a nitrogenous heterocyclic base which is either a purine or a pyrimidine, a pentose (five carbon) sugar (either ribose or 2′-deoxyribose), and one to three phosphate groups.
How long is my morning commute (11 kilometers) in Angstroms?110 million angstroms
110 trillion angstroms
110 billion angstroms
110 quadrillion angstroms
The length of your morning commute (11 kilometers) in Angstroms is 110 billion angstroms.
An Angstrom is a unit of length that is commonly used in the field of nanotechnology to describe the size of atoms and molecules. One Angstrom is equal to 10^-10 meters, or 0.1 nanometers. To convert kilometers to Angstroms, we need to multiply the distance in kilometers by 10^13. Therefore, the length of your morning commute of 11 kilometers is equal to 11 x 10^13 Angstroms, which is equal to 110 billion Angstroms.
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Crocuses can bloom in the winter, while dahlias bloom in the fall. This is due to different responses to daylight length or _________.
A. Sun rays
B. Photoperiodism
C. phototropism
D. geotropism
Answer:
It's becoz of sun rays.....
if you line up any two individuals' human genome sequences, what difference(s) will you see?
If you line up any two individuals' human genome sequences, you will observe a number of differences between them. These differences can be categorized into two main types: single nucleotide variations (SNVs) and structural variations.
Single Nucleotide Variations (SNVs): SNVs, also known as single nucleotide polymorphisms (SNPs), are the most common type of genetic variation. They involve a change in a single nucleotide base pair in the DNA sequence. These variations can occur throughout the genome and can be present in both coding and non-coding regions of the DNA. SNVs can be either silent, meaning they do not result in any observable change in the encoded protein, or they can lead to amino acid substitutions, affecting protein structure and function.
Structural Variations: Structural variations are larger-scale alterations in the DNA sequence compared to SNVs. They involve changes in the structure, arrangement, or number of DNA segments. Some examples of structural variations include:
Insertions: Additional DNA segments are inserted into the genome.
Deletions: DNA segments are deleted from the genome.
Duplications: DNA segments are duplicated, resulting in multiple copies.
Inversions: DNA segments are reversed or inverted in orientation.
Translocations: DNA segments are moved or transferred to different locations in the genome.
These structural variations can vary in size, ranging from a few nucleotides to large-scale rearrangements involving whole genes or even chromosomes. They can have significant implications for gene expression, regulation, and overall genome stability.
It is worth noting that most of the genetic variations observed between individuals are neutral and do not necessarily have a direct impact on health or phenotypic traits. However, some variations can be associated with specific traits, susceptibility to diseases, or drug responses. Comparative analysis of individual genomes is crucial for understanding genetic diversity, evolution, and identifying genetic factors underlying various diseases and traits.
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One of the functions is
All lipids are made from smaller building blocks known as
The answer are
amino acids
fatty acids
monosaccharides
nucleotides
Answer:
Fatty acids
Explanation:
Lipides is fat in French so I just figured it makes sense.
Answer:
What is amino acids
Explanation:
Lipids are composed of fatty acids, glycerol, and other components. A compound made of small carbon compounds called amino acids.
If this helped you please let me know. A brainly, rating, thank you are all appreciated.
Miss Hawaii
Directions: Match Column A with its corresponding description in Column B.
Column A Column B
1. Gametes
2. Gametogenesis
3. Genetic recombination
4. Gonad
5. Haploid
6. Importance of meiosis
7. Oogonium
8. Ovulation
9. Extra fingers
10. 47, XXY syndrome
A. sex cells
B. testes and ovary
C. the release of eggs from the ovary
D. single set of unpaired chromosomes
E. The immature female reproductive cells
F. having a complete set of each pair of chromosomes
G. exchange of genetic material between different organisms
H. common physical characteristics of people with Patau syndrome
I. process by which gametes, or sex cells, are produced by an
organism
J. an illness in the sex chromosome among males which is also
identified as Klinefelter Syndrome
K. ensures that all organisms produced via sexual reproduction
contain the correct number of chromosomes by producing haploid
gametes.
1. Gametes - A. sex cells
2. Gametogenesis - I. process by which gametes, or sex cells, are produced by an organism
3. Genetic recombination - G. exchange of genetic material between different organisms
4. Gonad - B. testes and ovary
5. Haploid - D. single set of unpaired chromosomes
6. Importance of meiosis - K. ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes by producing haploid gametes.
7. Oogonium - E. The immature female reproductive cells
8. Ovulation - C. the release of eggs from the ovary
9. Extra fingers - H. common physical characteristics of people with Patau syndrome
10. 47, XXY syndrome - J. an illness in the sex chromosome among males which is also identified as Klinefelter Syndrome
1. Gametes - A. sex cells: Gametes are specialized cells involved in sexual reproduction. They are either sperm cells (male gametes) or egg cells (female gametes). Gametes contain half the number of chromosomes compared to somatic cells and combine during fertilization to form a zygote with a complete set of chromosomes.
2. Gametogenesis - I. process by which gametes, or sex cells, are produced by an organism: Gametogenesis is the process through which gametes are formed. It involves the development and maturation of germ cells in the gonads (testes in males, ovaries in females) into functional gametes. In males, the process is called spermatogenesis, resulting in the production of sperm cells, while in females, it is called oogenesis, resulting in the production of egg cells.
3. Genetic recombination - G. exchange of genetic material between different organisms: Genetic recombination refers to the exchange of genetic material between homologous chromosomes during meiosis. It leads to the creation of new combinations of genes, promoting genetic diversity. This process occurs through crossing over, where segments of chromosomes swap places, and contributes to the uniqueness of offspring.
4. Gonad - B. testes and ovary: The gonads are reproductive organs responsible for producing gametes. In males, the gonads are the testes, which produce sperm cells. In females, the gonads are the ovaries, which produce egg cells. The gonads also secrete hormones involved in sexual development and reproduction.
5. Haploid - D. single set of unpaired chromosomes: Haploid refers to a cell or organism having a single set of unpaired chromosomes. Gametes are haploid cells, containing half the number of chromosomes found in somatic cells. During fertilization, haploid gametes combine to restore the diploid chromosome number in the resulting zygote.
6. Importance of meiosis - K. ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes by producing haploid gametes: Meiosis is vital for sexual reproduction as it ensures the correct number of chromosomes in offspring. By undergoing two rounds of division, meiosis produces haploid gametes with a single set of chromosomes. When fertilization occurs, the fusion of two haploid gametes forms a diploid zygote with the right chromosome number for the species. Meiosis also promotes genetic diversity through genetic recombination, contributing to evolutionary adaptation.
7. Oogonium - E. The immature female reproductive cells: Oogonium refers to the immature female reproductive cells found in the ovaries. These cells undergo mitotic divisions to produce primary oocytes, which later undergo oogenesis to form mature egg cells (ova).
8. Ovulation - C. the release of eggs from the ovary: Ovulation is the process in which a mature egg cell (ovum) is released from the ovary. In females, ovulation typically occurs once per menstrual cycle, and it is an essential step in fertility and reproduction.
9. Extra fingers - H. common physical characteristics of people with Patau syndrome: Extra fingers, or polydactyly, refers to the presence of more than the usual number of fingers or toes. However, in the given options, there is no direct correspondence to this term.
10. 47, XXY syndrome - J. an illness in the sex chromosome among males which is also identified as Klinefelter Syndrome: 47, XXY syndrome, also known as Klinefelter Syndrome, is a chromosomal disorder that affects males. It occurs when a male is born with an additional X chromosome (XXY) instead of the usual XY configuration. This syndrome may lead to various
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how do viroids harm the plants that are infected with them?
Viroids are small infectious agents that consist of a single-stranded RNA molecule lacking a protein coat. They infect plants and cause various harmful effects.
Viroids harm plants primarily through two mechanisms:
1. Disruption of gene expression: Viroids can interfere with the normal functioning of plant cells by targeting specific RNA molecules involved in gene expression. They can bind to and modify host RNA molecules, leading to the disruption of essential cellular processes. This interference can result in stunted growth, distorted leaves, and reduced crop yield.
2. Induction of host defense responses: Viroids can trigger plant defense responses, leading to the activation of defense mechanisms such as the production of reactive oxygen species, synthesis of antimicrobial compounds, and changes in gene expression. These defense responses can be harmful to the plant itself, causing cellular damage and contributing to the overall decline in plant health.
In summary, viroids harm plants by interfering with gene expression and inducing defense responses, ultimately leading to impaired growth, altered morphology, and reduced productivity.
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3. Which of the following strategies is most likely
to help conserve natural resources?
A. spraying chemical fertilizers on crops
B. investing in power plants that burn fossil
fuels
C. leaving electronic devices running when not
in use
D. taking buses or subways to work rather than
driving cars
The strategy that is most likely to help conserve natural resources is taking buses or subways to work rather than driving cars, option D.
How can natural resources be helpful to humans?Reduce, reuse, and recycle: By reducing the amount of resources we consume, reusing items whenever possible, and recycling materials, we can help to conserve natural resources.
Energy conservation: By using energy-efficient appliances, lighting, and vehicles, and reducing overall energy consumption, we can reduce our impact on natural resources.
Sustainable agriculture: Sustainable agriculture practices, such as crop rotation and reducing the use of pesticides and chemical fertilizers, can help to conserve resources and protect the environment.
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In your own words, explain the process of convection.
Answer:
Convection is a process by which heat is transferred by bulk movements of molecules that are within fluids such as gases and liquids.
Explanation:
Schwann cells forms a myelin sheath round the
Answer:
axons in the peripheral nervous system
Explanation:
True or False; Diversity of life has decreased over Earth's history.
Answer:
true
Explanation:
Just think about extinction and how many species we have lost throughout time.
Which of the following scenarios may place the patient at a higher risk for cancer? To be marked correct, you'll need to select all applicable statements, as there may be more than one correct answer.
View Available Hint(s)
Which of the following scenarios may place the patient at a higher risk for cancer? To be marked correct, you'll need to select all applicable statements, as there may be more than one correct answer.
A patient takes the immunosuppressant drug azathioprine to control inflammation associated with rheumatoid arthritis.
A patient infected with Epstein Barr Virus experiences a low CD8 T cell count associated with the infection.
A pediatric patient receives a DTaP vaccination, protecting him against diphtheria, tetanus, and pertussis.
A pediatric patient with DiGeorge syndrome is born without a thymus.
The scenarios that may place the patient at a higher risk for cancer are as follows:
A patient takes the immunosuppressant drug azathioprine to control inflammation associated with rheumatoid arthritis.
A patient infected with Epstein Barr Virus experiences a low CD8 T cell count associated with the infection.
A pediatric patient with DiGeorge syndrome is born without a thymus.
Explanation:
Cancer is a condition where cells in the body grow and divide uncontrollably. There are many different types of cancer, but all of them start with abnormal cells that grow out of control.
Certain factors increase the risk of developing cancer, including genetics, lifestyle, and environment.
Immunosuppressant drugs, such as azathioprine, can weaken the immune system and increase the risk of cancer.
Epstein Barr Virus can also cause a low CD8 T cell count, which is associated with an increased risk of cancer.
Finally, DiGeorge syndrome is a genetic disorder that can cause a lack of a thymus, which is an organ that helps the immune system fight off infections and cancer.
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Many organisms live in intertidal areas. However, fewer organisms live on high, rocky shores than in other intertidal environment. What are the probable reason for this?
Answer:
The intertidal zone or area is defined as the area where the ocean and land meets between high and low tides.
Many of the organisms live in intertidal areas while fewer organisms live on high rocky shores because of the adaptation ability of the organisms.The probable reasons for this can be:
Intertidal zones have frequent changes in temperature, moisture, and salinity, some animals evolve them and migrate to rocky shores.Some animals include adaptive features such as attaching more firmly to the rocks along with resistant shells, restricting activities and the ability to retain water helps them to survive in rocky shores.Most of the animals are unable to withstand to the sun for most of the day as in rocky shores, so they prefer to live in intertidal zones.Animals living in rocky shores depends on the floating water that carry food for them.Example of animals living in intertidal zones are brittle stars, barnacles, crabs and other.
Example of animals living in rocky shores are sponges, mussels and sea squirts et-cetra.
Hence, the animals evolve some adaptive feature that allow them to migrate to rocky shores.
In pea plants yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant what ratio of yellow and green seeded plants would you expect in F1 generation : A. 1 : 3 B. 9 : 1 C. 3 : 1 D. 50 : 50
In pea plants, the yellow seed color is dominant to green, and the letter "Y" is typically used to represent the yellow allele, while "y" represents the green allele. The correct answer is d) 50:50.
In genetics, heterozygous refers to an organism that has two different alleles (versions of a gene) for a particular trait. Each parent contributes one allele to the offspring, so a heterozygous individual has inherited one allele from each parent that differs in their DNA sequence.
If a heterozygous yellow-seeded plant (Yy) is crossed with a green-seeded plant (yy), the possible gametes for the yellow-seeded plant are Y and y, while the green-seeded plant only produces y.
The resulting genotypic ratio of the F1 generation would be 1:1 (Yy: yy), and the phenotypic ratio would be 1:1 (yellow: green). Therefore, the correct answer is D) 50:50.
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Where do living things get their traits?
Answer:
genes containing dna.
Explanation:
during reproduction genes containing dna, are passed along to an organisms offspring. these genes ensure that the offspring will belong to the same species.
In ______ reproduction, genetically identical offspring are produced, while in ______ reproduction, offspring are genetically different from each other. Multiple choice question. asexual; sexual
After a virus attaches to and penetrates a host cell, a virus can enter a phase where symptoms of the infection are delayed or it can:____.
After a virus attaches to and penetrates a host cell, a virus can enter a phase where symptoms of the infection are delayed or it can undergo various outcomes depending on the specific virus and host interaction.
After a virus attaches to and penetrates a host cell, a virus can enter a phase where symptoms of the infection are delayed or it can undergo various outcomes depending on the specific virus and host interaction. Some possible options include:
1. Enter an active replication phase: The virus begins to replicate inside the host cell, leading to the production of more viral particles. This can eventually lead to the onset of symptoms.
2. Enter a latent or dormant phase: The virus may integrate its genetic material into the host cell's genome and remain inactive or dormant for an extended period. During this phase, symptoms may be absent, and the virus remains undetectable. However, it can reactivate later, leading to the manifestation of symptoms.
3. Undergo chronic infection: In some cases, the virus establishes a persistent infection, where it continues to replicate at a low level over an extended period. Chronic infections can result in long-term symptoms or complications.
It is important to note that the specific outcome depends on various factors, including the virus's characteristics, the host's immune response, and the interaction between the two.
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Approximately 17,000 species are in danger of becoming extinct.
what are some causes?
Habitat loss and fragmentation due to activities like deforestation and urbanization pose a significant threat.
The endangerment and potential extinction of approximately 17,000 species are driven by various causes. Habitat loss and fragmentation due to activities like deforestation and urbanization pose a significant threat. Climate change, resulting from human activities, disrupts ecosystems through altered weather patterns.
Pollution, including air, water, and soil pollution, harms species and their habitats. Overexploitation and illegal wildlife trade drive species towards extinction.
Invasive species outcompete natives, affecting their survival. Disease spread, facilitated by habitat degradation and human-wildlife interactions, threatens species. Genetic factors and small population sizes limit adaptability and increase vulnerability.
Addressing these causes necessitates conservation, habitat protection, sustainable resource management, and global cooperation to preserve biodiversity and prevent further species decline and loss.
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which of the following is true of both kinesin and dynein? both kinesin and dynein require accessory proteins to mediate transport. both motor proteins carry cargo toward the ( ) end of microtubules. both are two-headed motor proteins. both kinesin and dynein are very large proteins of >500 kda.
The statement that is true of both kinesin and dynein is Both kinesin and dynein are two-headed motor proteins.
The correct option is C
Kinesin and dynein are both types of motor proteins that transport cargo within cells along microtubules, which are part of the cytoskeleton. Kinesin moves cargo towards the plus end of the microtubule, while dynein moves cargo towards the minus end.
Kinesin and dynein also require accessory proteins to mediate their transport activities, as well as adapt to different cellular conditions. both kinesin and dynein are large proteins with molecular weights greater than 500 kDa.
Hence , C is the correct option
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How does carpool lines affect economy?
The purpose of HOV lanes is to encourage more efficient use of highway capacity by increasing average vehicle occupancy, thereby accommodating high levels of passenger travel while reducing total traffic volumes. ... The result is a pure gain to highway users.
All atoms of the same element contain the same number of _______.
A. electron cloud
B. neutrons
C. atomic mass
D. mass number
E. protons
Bacteria add carbon to the carbon cycle by (1 point)
O being consumed by larger organisms, such as plankton.
O decomposing dead organisms.
exchanging carbon dioxide and oxygen gases
O performing photosynthesis.
Bacteria and the carbon cycle have an important link, to understand this link we need to know that.....
The carbon cycle
The carbon cycle is constituted by the absorption of carbon dioxide by plants in the process of photosynthesis. Half of this absorbed carbon is released into the atmosphere and the other half the plant uses to produce sugars (glucose). When ingesting plants, animals ingest carbon together for their organism, being released through respiration or its decomposition.
Bacteria add carbon to the carbon cycleFungi and bacteria are responsible for the decomposition of both
Animals and PlantsThey ingest part of this carbon, releasing it to the atmosphere and the soil.
With this information, we can say that bacteria add carbon to the carbon cycle by decomposing dead organisms.
Decomposers, such as bacteria, are extremely important, because without them the carbon cycle would not be complete.
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What is a reasonable action that provides safer water for communities?
Answer:
1.Improve sanitation facilities by providing toilets and latrines that flush into a sewer or safe enclosure.
2.Promote good hygiene habits through education. ...
3.Implement rainwater harvesting systems to collect and store rainwater for drinking or recharging underground aquifers.
Which statement accurately describes runners?
A runner is a small underground stem that sprouts new buds.
A runner is a series of underground leaves that contain stored food.
A runner is a horizontal stem that grows along the ground.
A runner is a horizontal stem that grows underground.
Answer:
C✌
A runner is a small underground stem that sprouts new buds.
A runner is a series of underground leaves that contain stored food.
A runner is a horizontal stem that grows along the ground.<--THIS ONE
A runner is a horizontal stem that grows underground.
Which theory of plate movement relies on the weight of the subducting crust?
A. Slab-push
B. Slab-pull
C. Mantle convection
D. Hot plumes
Answer:
The answer is slab-pullExplanation:
Got it right on the quiz :))
What is the difference between adrenergic vs cholinergic?
Adrenergic and cholinergic are terms used to describe two different types of neurotransmitters and receptors in the nervous system.
Adrenergic refers to the neurotransmitter called epinephrine (also known as adrenaline) and norepinephrine (noradrenaline), which are released by the sympathetic nervous system. These neurotransmitters bind to adrenergic receptors, which are located on many different types of cells throughout the body. Adrenergic receptors are classified into two main types: alpha-adrenergic receptors and beta-adrenergic receptors. When these receptors are stimulated by epinephrine or norepinephrine, they can cause various physiological responses, including increased heart rate, blood pressure, and respiration, as well as increased glucose release from the liver. Cholinergic, on the other hand, refers to the neurotransmitter called acetylcholine, which is released by the parasympathetic nervous system and some neurons in the central nervous system. Cholinergic neurotransmission is involved in many physiological processes, including muscle contraction, heart rate regulation, and memory formation. In summary, adrenergic and cholinergic refer to different types of neurotransmitters and their respective receptors, which play important roles in regulating various physiological processes in the body.
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the atom below has an incomplete valence shell
Answer:
No it actually doesn't
Explanation:
You can thank later