Answers
Answer:
C. endoplasmic reticulum
Explanation:
I don't have any notes on this but research says C! Hope this helps :)
Related Questions
What TWO things cause denaturation of enzymes:
Answers
Quagga mussels, an invasive species of mollusk originally from
Russia, have been introduced to the lake after being carried in on
the hulls of boats. An assessment of the size of the quagga
mussel problem is needed, along with suggestions to curb their
population growth.
what field of science is this?
Answers
This is a problem in the field of ecology.
The problem of quagga mussels in the lake is an ecological issue that requires scientific assessment and management.
It falls under the discipline of ecology, which studies the relationships between organisms and their environment.
Ecologists investigate the impacts of invasive species on the ecosystem and devise strategies to control their spread and minimize their effects.
In this case, scientists will need to examine the size of the quagga mussel population, their distribution, and their ecological interactions with native species.
They will also need to recommend measures to prevent further introduction of quagga mussels and to manage their population growth, such as using chemical treatments or biological controls.
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Which statement describes competition in an environment?
Answers
Answer:
Sunlight shines only three months out of the year.
Explanation:
the images represent ecosystems in the eastern united states. rank the ecosystems by their ability to remove and store carbon, from greatest to least.
Answers
The mangrove forest which holds the most Carbon dioxide followed by forest shown by second image and at last the vegetation on farms holds and releases the least amount of Carbon dioxide.
Carbon is transferred through one storage reservoir to another through a range of mechanisms. Plants, for example, transfer carbon dioxide from the atmosphere into the biome via photosynthesis in the food chain. They use solar energy to chemically incorporate carbon dioxide, hydrogen, and oxygen from water to form sugar molecules. Animals that consume plants metabolize the sugar molecules to obtain energy. Respiration, excretion, and decomposition all return carbon to the atmosphere or soil, thus completing the cycle.
Erosion, for example, releases carbon into the atmosphere slowly, whereas volcanic activity releases it quickly. Another way to quickly release carbon into the atmosphere is to burn fossil fuels in automobiles or power plants.
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Do buffaloes overgraze?
Answers
Answer:
No
Explanation:
I don't believe Buffaloes overgraze.
if scientists found a fossil in the middle layer that was 2 million years old, would they think Earth was more or less than 2 million years
Answers
If scientists found a fossil in the middle layer that was 2 million years old, they would conclude that Earth is more than 2 million years old based on the presence of older rock layers and fossils in lower layers.
Fossils provide valuable evidence for dating the age of the Earth and its geological history.
The principle of superposition, a fundamental concept in geology, states that in undisturbed rock layers, the oldest rocks are found at the bottom, while the youngest rocks are found at the top.
By finding a 2 million-year-old fossil in the middle layer, scientists can infer that the lower layers, which were formed before the middle layer, are older than 2 million years. Additionally, the presence of upper layers, formed after the middle layer, would suggest that Earth's age exceeds 2 million years.
Scientists use various dating methods, including radiometric dating, to determine the age of rocks and fossils.
These techniques analyze the isotopic decay of certain elements present in the rocks or fossils to estimate their age.
Through these methods, scientists can establish a more accurate timeline of Earth's history, revealing an age far greater than the age of the specific fossil found in the middle layer.
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What does NASA like to call the free-fall condition while on the space station?
A. microgravity
B. falling with style
Answers
What causes fossil fuels?
fossil fuels are formed from the decomposition of buried
Answers
Fossil fuels are formed from the decomposition of buried carbon-based organisms that died millions of years ago. They create carbon-rich deposits that are extracted and burned for energy. They are non-renewable and currently supply around 80% of the world's energy.
Describe how an operon regulates the gene expression of genes.
Answers
Solution:
The Operon is a regulated transcription unit, present in bacteria. An operon contains regulatory DNA sequences, which act as binding sites for regulatory proteins that promote or inhibit gene transcription. In this way, they regulate the expression of genes to proteins.
It is made up of the following components:
A regulatory gene:
The regulatory gene encodes a regulatory protein, the repressor. The lac repressor, encoded by the lacI gene, is the regulatory protein of the lac operon.
An operator:
The operator is the region of DNA in the operon to which the regulatory protein binds.
A promoter:
The promoter is the DNA sequence in the operon recognized by DNA-dependent RNA polymerase. The initiation site for RNA synthesis is located immediately after the promoter.
Structural genes:
The operon contains one or more genes encoding inducible enzymes.
A student was asked to prepare a model of the rock cycle as it moves matter slowly through the Earth. The student creates a model, as shown here. In order to revise the model, how should the lettered components be modified in order to create an accurate model? Select all choices that apply.
Answers
In this model the student shows how the tree types of rocks are created according to different agents acting on them like temperature, pressure, and erosion. A) Letter A should represent igneous rock that is extruded from magma. D) Letter C should represent metamorphic rock which changes composition under heat and pressure. E) Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.
What is the rock cycle?The rock cycle, also known as the lithological cycle, is the geological process through which rocks transform.
During the cycle, rocks suffer transformations that lead them to change from one type to another, turning into igneous, sedimentary, and metamorphic rocks.
The cycle begins when magma rises to the Earth's surface, where it gets cold, solidifies, and turns into igneous rocks.
Igneous rocks can suffer,
Erosion ⇒ erosive agents ⇒ small rocky fragments deposit and compact ⇒ turn into Sedimentary rocks.Change of temperature and pressure ⇒ under several layers under the group ⇒ turn into Metamorphic rocks. Exposure to extreme temperatures and melting ⇒ deeper zones under the crust ⇒ turn into magma again.Sedimentary rocks are composed of rocky sediments from other rocks and the remains of living beings that get stuck within the sedimentary layers.
Sedimentary rocks can suffer the same three types of transformations,
Erosion ⇒ produce new sedimentary rocks. Changes in temperature and pressure ⇒ turn into metamorphic rocks.Melt ⇒ become magma.Finally, metamorphic rocks are produced underground when other rocks suffer changes.
Metamorphic rocks have two destinies,
become sedimentary rocks ⇒ erosion become magma ⇒ meltingThe correct options are,
A) Letter A should represent igneous rock that is extruded from magma.
D) Letter C should represent metamorphic rock which changes composition under heat and pressure.
E) Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.
Note: Since I could not find the image, I will provide the options at the end of the text, and I will attach a model.
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A student was asked to prepare a model of the rock cycle as it moves matter slowly through the Earth.
The student creates a model, as shown here.
In order to revise the model, how should the lettered components be modified in order to create an accurate model?
Select all choices that apply
A) Letter A should represent igneous rock that is extruded from magma,
B) Letters A and B should both be igneous rock, which is found near the
Earth's surface.
C) Letters and B should be sedimentary rock, which is found under layers of other materials
D) Letter C should represent metamorphic rock which changes composition under heat and pressure.
E) Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.
Which two parts of the cell are unique to plant cells?
Answers
Answer:
Cell wall, chloroplast, vacuole. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.
Explanation:
The main difference between plant cells and animal cells are cell wall and chloroplast , whereas for the vacuole plants have a vacuole called vescile which is not the same as the vacuole in plant cells.
Vacuoles are very large as they are needed to store water and they mostly contain water and sugars . On the other hand, vesicles are small and contain water, nutrients, enzymes, wastes, solution of water or food etc. This is the key difference between vacuoles and vesicles. hope it helps :)
How many alleles are typically present in a genotype?
Answers
Answer:A genotype is the combination of two alleles, one received from each parent. The expression of a genotype is called the phenotype and the specific combination of the two alleles (the genotype) influences the physical expression (the phenotype) of the physical trait that the alleles carry information for.
Explanation: so 2
A cline:
a. is continuous variation that follows a geographic continuum.
b. is variation that falls into discrete categories.
c. was used to describe human variation as early as the Renaissance.
d. describes the pattern of occurrence of trisomy 18.
Answers
Answer:
The correct answer is - option A is continuous variation that follows a geographic continuum.
Explanation:
A cline is a slow change in the physical and genetic traits of a population or species across a geographical difference or gradient. If a species present in a very large area, there would be some members live on different environmental condition in comparison to others.
By this gradient members of species show continuous variation that follows a geographic continuum. For, example, In a species of warm-blooded animals have large body size in cooler area than in warmer area.
Thus, the correct answer is - option A is continuous variation that follows a geographic continuum.
Compare the animal groups by placing the correct number(s) in the spaces provided 1.Sponges 2.Cnidarians
Answers
To compare the animal groups, Sponges and Cnidarians, let's consider some key characteristics of each group:
Sponges:
Sponges are multicellular organisms that belong to the phylum Porifera. They are simple animals that lack true tissues and organs.
Cnidarians:
Cnidarians belong to the phylum Cnidaria and include animals like jellyfish, corals, and sea anemones. They exhibit more complexity compared to sponges and have distinct tissue layers.
To compare the animal groups, Sponges and Cnidarians, let's consider some key characteristics of each group:
Sponges:
Sponges are multicellular organisms that belong to the phylum Porifera. They are simple animals that lack true tissues and organs. Some key characteristics of sponges include:
They have a porous body structure with numerous pores and channels.
They are filter feeders, extracting food particles from water that passes through their bodies.
Sponges exhibit a wide range of shapes, sizes, and colors.
They reproduce both sexually and asexually.
Cnidarians:
Cnidarians belong to the phylum Cnidaria and include animals like jellyfish, corals, and sea anemones. They exhibit more complexity compared to sponges and have distinct tissue layers. Some key characteristics of cnidarians include:
They have a sac-like body plan with a central digestive cavity called a gastrovascular cavity.
Cnidarians possess specialized cells called cnidocytes that contain stinging structures called nematocysts, which they use for defense and capturing prey.
They exhibit radial symmetry.
Cnidarians can reproduce both sexually and asexually.
In comparing the two groups, sponges and cnidarians, we can note the following:
Sponges are simpler in structure and lack true tissues, while cnidarians have distinct tissue layers.
Cnidarians have specialized stinging cells (cnidocytes) for capturing prey, while sponges do not possess such cells.
Cnidarians exhibit radial symmetry, whereas sponges do not have a specific symmetry pattern.
Both groups can reproduce sexually and asexually, but their reproductive strategies may differ.
Overall, sponges and cnidarians represent different levels of complexity and organization within the animal kingdom, with cnidarians exhibiting more specialized structures and behaviors compared to sponges.
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Explain how the burning of food calories and the burning of wood are similar and how they are different.
Answers
Answer:
When calories are being burned, energy is being used. In order to burn wood, energy (heat) is being used. Differences, well when you burn calories, you lose weight but when you burn wood, the wood turns into ashes. Carbohydrates have chemical bonds that are a good source of energy for living things.
Describe different ways that tectonic plates may continue to change the earth. Use evidence from the passage to support your answer.
Answers
Tectonic plates would move more and form more mountains, or that additional plate collisions could create volcanic islands which could also explain why the oceans would change more in shape as the plates continued to move.
What are Tectonic plates?Plate tectonics is defined as the accepted scientific theory that the Earth's lithosphere consists of several large tectonic plates that have been slowly moving since about 3.4 billion years ago.
Tectonic plates are situated all over the world which cover the Earth's inner layers which act as a sort of shell below the ground and the sea.
Thus, Tectonic plates would move more and form more mountains, or that additional plate collisions could create volcanic islands which could also explain why the oceans would change more in shape as the plates continued to move.
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Question 1 options:
The process allows organisms to grow and heal.
The process produces clones of the parent organism.
The process copies DNA before cell division.
The process creates genetic variation in the resulting cells.
Answers
The process that allows organisms to grow and heal is mitosis.
The process that produces clones of the parent organism is mitosis.
The process that copies DNA before cell division is replication.
The process that creates genetic variation in the resulting cells is meiosis.
Cell divisionCell division is a process whereby cells divide to produce daughter cells. There are two types of cell division:
MitosisMeiosisIn mitosis, cells divide to produce daughter cells that are exact copies of their parents. The division is otherwise known as the equational division or the division of vegetative cells. The division of vegetative cells is essential growth and healing of wounds.
In meiosis, cells divide to produce daughter cells that are genetic variants of their parent cells. The daughter cells are unique from the parent cells both morphologically and genetically. Meiotic cell division is otherwise known as reductional division because the daughter cells have half the genetic copies of their parent cells.
Be it mitosis or meiosis, cells make copies of their DNA before irreversibly committing to divide. The copying of DNA is otherwise known as replication. Replication happens at the S phase of the cell cycle with each DNA strand acting as a template for the synthesis of its complementary copy.
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Name:______________________________ DNA Structure Student Practice (12. 1) Modified True/False Statements: If the statement true, write True in the blank. If the statement is is false, write False in the blank and correct the underlined word to make the statement true. The building blocks of DNA molecules are amino acids. DNA molecules contain a 5-carbon sugar called deoxyribose. The nitrogen bases found in DNA molecules include adenine, cytosine, guanine,
Answers
Answer:
- The building blocks of DNA molecules are amino acids. False
- DNA molecules contain a 5-carbon sugar called deoxyribose. True
- The nitrogen bases found in DNA molecules include adenine, cytosine, guanine, and thymine. True
Explanation:
The building blocks of the deoxyribonucleic acid (DNA) are nucleotides, while amino acids are the building blocks of proteins. Each nucleotide consists of one of four possible nitrogenous bases: two purines (i.e., adenine and guanine) and two pyrimidines (i.e., cytosine and thymine). In DNA, each nucleotide consists of one of these four nitrogenous bases, a five-carbon sugar molecule (called deoxyribose), and a phosphate group. The DNA molecule has a double-helix structure, where nitrogenous bases are inside the double helix while sugars and phosphates are outside. In DNA, cytosine always pairs with guanine and thymine always pairs with adenine.
what is an orgasim to the human body
Answers
Answer :i- The orgasm is widely regarded as the peak of sexual excitement. It is a powerful feeling of physical pleasure and sensation, which includes a discharge of accumulated erotic tension.
Explanation:
How would the absence of juxtamedullary nephrons affect the volume of urine and its osmotic concentration?
Answers
Answer:
Increase volume; decrease osmotic concentration
Explanation:
Nephron is the functional unit of a kidney.
The juxtamedullary nephrons is responsible for the development of the osmotic gradients. The osmotic gradient helps in ensuring the urine is well concentrated and helps in adequate water reabsorption.
The absence of juxtamedullary nephrons affect the volume of urine and its osmotic concentration by Increasing the volume and decreasing the osmotic concentration.
answer with explanation thank you
Answers
Part A:
The genes for feather color and texture are independently assorted, with light blue being more dominant than smooth and dark blue. It appears that the characteristics for wing colour (light blue vs. dark blue) and wing texture (smooth vs. ridged) are separately assorting based on the observed ratios of offspring with various combinations of wing colour and texture.
Part B:
One theory for why lactose tolerance evolved in humans is that increased selection during famines led some individuals to have a different food supply and increased fat consumption, which offered more resources for improved fitness. These two possibilities may serve as theories for the evolution of lactose tolerance in humans. One characteristic often seen in people with a history of dairy farming is the ability to digest lactose (the sugar contained in milk) from infancy.
Therefore, the correct options for Part A and Part B are B and B &D respectively.
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Why do teens tend to make riskier decisions than adults?
Answers
Brain Development: The brain undergoes extensive development and reorganization during adolescence, particularly in the prefrontal cortex, which is responsible for decision-making, impulse control, and weighing consequences. This region develops at a slower pace compared to the reward-seeking regions of the brain, such as the limbic system. As a result, teenagers may be more driven by immediate rewards and less inclined to consider long-term consequences.
Sensation Seeking: Adolescence is characterized by heightened sensation seeking and a desire for novel and exciting experiences. Teenagers often seek out new sensations and engage in risk-taking behaviors as a way to explore their own identity, gain independence, and test boundaries. The pursuit of thrills and excitement can overshadow the potential risks involved.
Social Influence: Peer influence plays a significant role during adolescence. Teenagers are highly attuned to social acceptance and approval, and they may engage in riskier behaviors to fit in, gain peer recognition, or conform to social norms within their peer group. The desire for social status and acceptance can override concerns about potential negative outcomes.
Incomplete Experience and Judgment: Compared to adults, teenagers have less life experience and exposure to various situations, making it more challenging for them to accurately assess risks and make informed decisions. They may lack the cognitive tools and judgment skills to fully evaluate the potential consequences of their actions.
Emotional Intensity: Adolescence is a time of heightened emotional intensity, with teenagers experiencing intense emotions and seeking ways to regulate them. Risk-taking behaviors can serve as a means to cope with or regulate these emotions, providing temporary excitement, distraction, or a sense of control
What is the codon for start?
This chart decodes the language of RNA into amino
acids.
A UAA
B. AUG
3
C. UAG
Leu
2
D. UGA
Asp (E)
Phe
(F)
(L)
Ser
(S)
(D)
CUCAOUCNOMOS
Tyr
Ala
(A)
loccatole
A AGU
с
Val
(V)
А
С
U
U
ט כ
Cys(C)
GU
GÀ
ГО, Тір (0,
U
A C
Arg (R)
A
С
G
Leu
(L)
Ser (S)
A
C
C
Lys (K)
Asn
(N)
UG
U
GA
Pro
(P)
ACUGACUGA
His
(H)
Thr
(T)
Gin
(0)
Met (M)
le
Arg
(R)
AC
Start
Stop
Tinhts Reserved.
Answers
Answer:
AUG is the stop codon
What is the flexibility of spider silk determined by the structure of its molecules
Answers
The flexibility of spider silk determined by the structure of its molecules is quite strong.
The components that make up spider silk are what give it its flexibility. Proteins called fibroins, which are made up of amino acids organised in a certain sequence, make up spider silk. The arrangement of amino acids in fibroin proteins results in a helical structure, which is held together by hydrogen bonds between the amino acids.
The fibroin protein chain's exact arrangement of amino acids and hydrogen bonds produces a special blend of strength and flexibility. The silk is flexible enough to stretch and absorb energy without breaking and robust enough to resist significant stress. Spider silk is a fantastic material for many uses, including clothes, medical equipment, and even bulletproof vests, thanks to its unique mix of qualities.
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Which statement best explains the importance of resource economics? 1. It details the costs of mining processes. 2. It provides fresh water to all areas of the world. 3. It examines the cost and profits of resource use. 4. It sets consistent prices to achieve sustainability.
I need help
Answers
Resource economics is a discipline that examines how societies employ their limited resources. The primary purpose of resource economics is to analyze how resources are developed, utilized, and depleted over time.
In general, the study is concerned with the optimal use of resources in a way that maintains or increases the well-being of people over time.The following statement best explains the importance of resource economics: It examines the cost and profits of resource use. According to resource economics, the optimal use of resources is obtained when the cost of producing and distributing goods is at the lowest possible level, while still guaranteeing that the goods and services are of high quality.
In order to achieve this, resource economics analyses the cost and benefits of resource use, and offers insight into how society can make the most efficient use of its limited resources. Therefore, this statement is the most appropriate, since it clarifies that resource economics is concerned with analyzing the cost and profits of resource use, which is necessary for any community to use its resources in a way that is both sustainable and profitable. Resource economics examines how resources are utilized and depleted over time, with the aim of maintaining or increasing the well-being of people over time.
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If a plant reproduces vegetatively, which of the following is true of the offspring? (1 point)1. they will have half the number of chromosomes 2. they will remain dormant until the offspring3. they will be genetically identical4. they will grow only from seeds
Answers
the correct answer is option 3
Why does natural selection occur more when there is competition for resources?
Answers
Natural selection occurs more prominently when there is competition for resources because competition creates selective pressures that drive adaptations and favor certain traits over others.
In any given environment, resources necessary for survival and reproduction, such as food, water, and shelter, are limited. As a result, individuals within a population must compete with one another to obtain these resources.
Competition leads to differential survival and reproductive success among individuals.
Those individuals with advantageous traits or variations that enable them to more effectively acquire and utilize resources have a higher likelihood of survival and producing offspring.
These advantageous traits can be physical characteristics, physiological adaptations, or behavioral strategies that provide a competitive edge.
Through natural selection, individuals possessing beneficial traits are more likely to pass on their genes to the next generation, while individuals with less favorable traits are at a disadvantage.
Over time, this process results in the accumulation of beneficial traits within the population, enhancing their overall fitness and adaptation to the specific environment.
Therefore, competition for resources acts as a driving force for natural selection by selecting for traits that enhance an individual's ability to secure limited resources, survive, and reproduce successfully.
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describe how a typical cell is
strctured to execute its function
Answers
Answer:
it has a nucleus which controls the activities of the cell & is the site of DNA replication & stores genetic info.
it also has mitochondria which are the site of aerobic respiration
a cell-surface membrane which controls what enters & exits the cell
it also has ribosomes which are the site of protein synthesis
Explanation:
Describe some of the challenges associated with saving the American chestnut tree using specific examples from the text
Answers
A biological control based on a virus that prevents the blight fungus from killing trees can be used to treat chestnut trees with blight cankers by applying mud packs directly to each canker.
Can you eat raw chestnuts?Although raw European chestnuts are not recommended, ours are fantastic! The nut is easily broken in two because the shell is leathery rather than rigid. Chestnuts can be chewed if you can chew carrots.
When ought one to consume chestnuts?When they naturally fall from the tree, chestnuts are mature. They mature throughout the course of two to four weeks in September and October. Avoid knocking the nuts from the tree since they gain half of their ultimate weight in the last two weeks before they fall.
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Where is most DNA located in a eukaryotic cell?
O The mitochondria
O The cytoplasm
O The ribosomes
O The nucleus
Answers
Answer:
I believe it is in the nucleus.
Explanation:
"The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA."