what s the function of the cell wall ?
Answers
The function of the cell wall for a eukaryote cell is provide structure, support, and protection for the cell with its rigid outer layer. The cell wall in plants is composed mainly of cellulose and contains three layers in many plants. The three layers are the middle lamella, primary cell wall, and secondary cell wall.
Related Questions
In one year, 35 giraffes are born to a population. What does this number represent?
Answers
course hero what are homologous features? explain why they are important in biological classification, and give an example of a homologous feature.
Answers
They point to linkages in evolution. One such instance is the humerus bone, which is present in all vertebrates with limbs and was passed down from the ancestor of all vertebrates with limbs (an early amphibian).
What is the humerus bone and what does it do?The bone in your upper arm between your elbow and shoulder is called the humerus. Its primary job is to give your shoulder support and a wide range of arm movements.
What makes the humerus significant?The humerus supports the arm structurally and serves as the place at which numerous significant upper body muscles, including the pectoralis major, latissimus dorsi, and rotator cuff muscles, insert.
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A hawk receives energy by eating other animals. What type of organism is a hawk?
A.
primary consumer
B.
secondary consumer
C.
producer
D.
decomposer
Answers
I think that's the hawk is a primary comsumer
Hope this helped
Q7.5. Opponents of intelligent design refer to irreducible complexity as an "argument from personal incredulity" (i.e., "I personally can't imagine how this could have evolved, so it must not have evolved.").
Answers
Opponents of intelligent design do indeed refer to
irreducible complexity
as an "argument from personal incredulity." This term is used to highlight the logical fallacy underlying the argument.
The concept of irreducible complexity, often associated with the work of
biochemist
Michael Behe, suggests that certain biological systems are too complex to have evolved gradually through natural selection and must therefore be the product of intelligent design.
The criticism of irreducible complexity as an argument from personal incredulity stems from the fact that it relies on one's subjective inability to envision a stepwise
evolutionary
pathway for a particular biological feature or system. Just because something is difficult to comprehend or imagine does not imply that it is impossible or requires the involvement of an intelligent designer.
The argument from personal incredulity essentially states, "I personally cannot fathom how this could have evolved, so it must not have evolved." This line of
reasoning
overlooks the vast amount of scientific evidence supporting the theory of evolution and the gradual development of complex biological structures over time.
Critics argue that when faced with complex biological systems, scientists approach the problem by investigating and studying the available evidence, constructing
hypotheses
, conducting experiments, and analyzing data to understand the mechanisms behind their evolution. The scientific method encourages a systematic investigation rather than relying on personal incredulity.
Moreover, examples once considered irreducibly complex have been explained through subsequent scientific research. Proposed examples of irreducible complexity, such as the bacterial flagellum and blood-clotting cascade, have been shown to have
plausible
evolutionary pathways with intermediate stages that provide selective advantages.
In summary, opponents of intelligent design criticize irreducible complexity as an argument from personal incredulity because it relies on one's personal inability to
envision
or understand the evolutionary processes involved. They argue that scientific inquiry and evidence-based reasoning offer more reliable methods for understanding the origins and complexities of biological systems.
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What is the term opponents of intelligent design use to describe irreducible complexity, characterizing it as an "argument from personal incredulity"?
Pls answer these smart people
Answers
Answer:
The sagittal planes runs parallel to the longitudinal axis of the organism, or from the mouth to the tail. The direction toward the sagittal plane is called medial, while the direction away from the sagittal plane is known as lateral
Explanation:
superior vena cava syndrome is a result of a progressive increase of which process?
Answers
superior vena cava syndrome is a result of a progressive increase of thrombosis or external compression
Thrombosis occurs when blood clots block your blood vessels. There are 2 main types of thrombosis: Venous thrombosis is when the blood clot blocks a vein. Veins carry blood from the body back into the heart.
Venous thromboembolism (VTE) is a condition that occurs when a blood clot forms in a vein. VTE includes deep vein thrombosis (DVT) and pulmonary embolism (PE). DVT occurs when a blood clot forms in a deep veins, usually in the lower leg, thigh, or pelvis.
Being sedentary due to bed rest or sitting too long without moving, such as during travel. Family history of blood clots. Having a long-term (indwelling) catheter, a tube in a blood vessel. Obesity.
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What do mitochondria do in healthy cells, and ny had defective mitochondria caused
David to lose his vision?
Answers
Muscle weakness, intolerance to exercise, decreased hearing and vision, ataxia, seizures, learning difficulties, heart problems, diabetes, and poor growth are the hallmark signs of mitochondrial myopathy.
What will happen if have a defective mitochondria?Defects in mitochondria, the body's energy producers that may be found inside practically all cells, are the root cause of mitochondrial disorders. mitochondrial myopathies are mitochondrial diseases that create noticeable muscular issues, while mitochondrial encephalomyopathies are mitochondrial disorders that cause noticeable muscular and neurological abnormalities.Several of the syndromes linked to mitochondrial disease include Barth syndrome, Chronic progressive external ophthalmoplegia, Kearns-Sayre syndrome, Leigh syndrome, Mitochondrial DNA depletion syndromes , Mitochondrial encephalomyopathy, Lactic acidosis, and stroke-like episodes, Mitochondrial neurogastrointestinal encephalomyopathy, Myoclonus epilepsy with ragged red fibers, Neuropathy, ataxia, and retinitis pigmentosa , Pearson syndrome.The mtDNA mutation that causes NARP also causes MILS, and the two disorders can coexist in the same family. NARP can cause developmental delay, seizures, and dementia in addition to the primary symptoms for which it is called.To learn more about mitochondria refer :
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what are the four characteristics of water?
Answers
1.It is a universal solvent.
2Pure water is transparent, colourless and odourless.
3.Pure water is a poor conductor of electricity.
4.Water in a pure form has a neutral ph i.e 7 which means it is neither acidic nor basic.
PLEASE HELP, WILL GIVE BRAINLIEST
Answers
You got it right :)
what is the function of the nervous systen?
A. it controls all body activities
B. it removes liquid waste material
C. it transports blood and nutrients to all parts of the body
D. it carries oxygen to the cells and removes carbon dioxide from the body
Answers
A diagram of a plant cell is shown.
The process being represented is ____.
A. Meiosis
B. Mitosis
C. Respiration
D. Mutation
Answers
Answer:
Mitosis
Explanation:
All the pictures represent the 5 phases of mitosis: interphase > prophase> metaphase> anaphase> telophase
It cannot be considered as meiosis because we have a single cell dividing into 2, neither a respiration or mutation
what does the phrase " naked seeds" mean in reference to gymnosperms?
A.) They produce pollen
B.) They don't have cones
C.) They produce flowers
D.) They don't have fruit
Answers
Answer:
D. they don't have fruit
Explanation:
Why do you think polar and nonpolar molecules do not mix?
Answers
Answer: Polar and nonpolar molecules do not mix easily due to their inherent differences in polarity and intermolecular forces.
Explanation:
Polar and nonpolar molecules do not mix because of the difference in their polarities. Polar molecules have uneven charge distribution and can form strong intermolecular interactions, while nonpolar molecules have balanced charge distribution and do not form strong interactions with polar molecules. This difference in polarity prevents them from mixing and leads to phase separation or poor solubility between polar and nonpolar substances.
why is the sky red sometimes
Answers
Answer:
Because you're beautiful
Answer:
It is red when the sun is setting and the blue light is removed leaving red and yellow light
Explanation:
when muscle tissue dies it usually is replaced with dense irregular collagenous connective tissue
Answers
When muscle tissue dies, it is usually replaced with dense irregular collagenous connective tissue. This process is known as fibrosis, which is the growth of fibrous tissue to replace damaged or injured tissue.
Dense irregular collagenous connective tissue is composed of collagen fibers that are densely packed, providing strength and stability to the area where it is formed.When muscle tissue dies, the muscle cells are replaced by fibroblasts, which produce collagen fibers. These fibers are organized in a random pattern, leading to the formation of dense irregular collagenous connective tissue.
This tissue is typically less flexible and has a reduced ability to contract compared to muscle tissue.Over time, the formation of dense irregular collagenous connective tissue can lead to a reduction in muscle function. The loss of muscle tissue can also result in a loss of strength and mobility, which can have a significant impact on a person's quality of life. In some cases, physical therapy or surgical intervention may be necessary to help improve muscle function and restore mobility.
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both gastric bypass and sleeve gastrectomy surgery lead to weight loss by reducing the number of calories a person absorbs from her food. sleeve gastrectomy surgery accomplishes this by _____.
Answers
Both gastric bypass and sleeve gastrectomy surgery lead to weight loss by reducing the number of calories a person absorbs from their food. Sleeve gastrectomy surgery accomplishes this by removing a large portion of the stomach, leaving a smaller sleeve-shaped stomach.
This smaller stomach limits the amount of food a person can eat and also reduces the production of hunger hormones, leading to a decrease in overall calorie intake. Hope this helps!
Additionally, the removal of a portion of the stomach during sleeve gastrectomy has metabolic effects that aid in weight loss. The portion of the stomach removed during the procedure is responsible for producing hunger hormones, including ghrelin.
Ghrelin is a hormone that stimulates appetite and promotes hunger sensations.
After sleeve gastrectomy, the production of ghrelin is reduced since the portion of the stomach responsible for its production has been removed. As a result, individuals experience a decrease in appetite and fewer hunger sensations. This helps in reducing overall calorie intake and supports weight loss efforts.
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#7 A cuckoo bird lays its eggs in a warbler bird's nest. Once hatched, the cuckoo chicks displace the warbler chicks, tricking the parent warbler into caring for them over their own young. What type of ecological interaction does the cuckoo have with the warbler?
a. Commensalism
b. Competition
c. Mutualism
d. Parasitism
Answers
Answer:
Parasitism
Explanation:
Parasitism is a kind of interaction between organisms in which only one organism gains from the interaction. Usually one organism gains at the expense of the other organism.
In this case, the cuckoo bird gains at the expense of the warbler bird. The cuckoo bird lays its eggs in the warbler bird nest and also tricks the warbler bird to care for its young at the expense of the warbler bird's young.
This is parasitism.
Answer:
Parasitism
Explanation:
This type of relationship is the brood parasitism, a clear example of the parasite-host relationship. Instead of building their own nest for their living, the cuckoo will lay their eggs in what is known as reed warbler’s nest. This leaves the warbler to take care of the egg together with her own children. When the eggs get hatched, the chick of the cuckoo will then ejects the young of the warbler from the next, which paves way for it to get all the food that its adopted mother will provide.
For each time point, how many Petri dishes do you need? a. 1 b. 2 c. 3 d. 4 QUESTION 2 For each time point of the growth curve, how many bottles of saline do you need to create your dilutions? 1 5 3 4 How much of each of your 10e−4 and 10e−6 dilutions do you plate into the empty plates? 1ml and 2ml 1ml and 0.1ml 1ml and 10ml 1ml only
Answers
(a) For each time point, you need 1 Petri dish.
(b) For each time point of the growth curve, you need 3 bottles of saline.
(c) You plate 1ml of each of your 10e-4 and 10e-6 dilutions into the empty plates.
(a) For each time point, you only need 1 Petri dish. This suggests that the experiment involves a single sample or organism being cultured or observed at each time point. Using one Petri dish allows for the growth or observation of the organism without the need for additional replicates.
(b) For each time point of the growth curve, you need 3 bottles of saline. This indicates that the experiment involves diluting the samples in saline solution at each time point. Having 3 bottles of saline allows for creating multiple dilutions to assess different levels of concentration or dilution factors.
(c) You plate 1ml of each of your 10e-4 and 10e-6 dilutions into the empty plates. This means that a specific volume of the diluted sample is plated onto the empty plates. Plating different volumes helps in achieving varying cell densities on the plates, which may be necessary for obtaining accurate colony counts or observing specific growth patterns.
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which of the follow are ways the small intestines increase surface area to maximize absorption? (select multiple)
Answers
The following are the ways the small intestines increase surface area to maximize absorption: Microvilli increase the surface area of the small intestine to maximize absorption.
This is because the absorptive cells in the villi have numerous microvilli (finger-like projections) that significantly increase their surface area. The folds of Kerckring are circular folds in the small intestine's lining that increase the surface area available for nutrient absorption. Additionally, the villi are covered with epithelial cells that secrete digestive enzymes that further aid in nutrient absorption.
Microvilli: These are little, finger-like projections that line the villi on the surface of the small intestine's absorptive cells. These projections dramatically improve the surface area of the small intestine. Because they increase the surface area, they can facilitate the absorption of a large amount of nutrients from the digested food.
Kerckring folds: The Kerckring folds, also known as plicae circulares, are small, circular folds located on the small intestine's inner wall. The Kerckring folds can greatly increase the surface area for nutrient absorption because of the volume of the folds, which are relatively long and broad in size. Because of their volume, the Kerckring folds can create more room for absorptive cells in the intestine, increasing the surface area available for nutrient absorption.
Epithelial cells: Epithelial cells are found on the surface of the small intestine's villi. The villi are lined with these cells, which secrete digestive enzymes that aid in nutrient absorption. These enzymes assist in the breakdown of macronutrients like carbohydrates, proteins, and fats, making them more accessible for absorption.
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If the moon is half full on May 15, on approximately
what date will it next become full?
O A. June 13
O B. June 29
O C. July 7
O D. May 22
Answers
Brass, an alloy used in the creation of musical instruments, is an example of a solution between a _____ and a _____.
A.) liquid, liquid
B.) solid, liquid
C.) solid, solid
D.) solid, gas
**NO LINKS** ~ “Properties of Water” assessment
Answers
4. The temperature in \( \# 3 \) is fresh water's temperature of maximum density. a. lower than b. equal to c. higher than
Answers
The given statement “The temperature in # 3 is fresh water's temperature of maximum density” means that the temperature at point 3 has a density of maximum density compared to other points of fresh water. So, the temperature at point 3 is equal to fresh water's temperature of maximum density. Therefore, the answer is option b. equal to.
Water is known as the only substance on earth that exists in all three forms, i.e., solid, liquid, and gas. Moreover, the density of water is also unique compared to other substances. Density is the property of a substance that measures the relationship between the mass and volume of a substance. The density of water varies with temperature and pressure. So, the density of water is always higher than that of gases but lower than most solids.
The density of fresh water at standard atmospheric pressure is around 1000 kg/m³, whereas seawater has a density of around 1025 kg/m³ at the surface. The density of water at different temperatures: Water has a unique density-temperature relationship, meaning the density of water varies with temperature.
At 4 °C, fresh water has the highest density, and as the temperature rises or falls below this point, the density of water decreases. So, water has an anomalous density-temperature relationship. Hence, b is the correct option.
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identify the parts of this food chain. the sun produces provides the energy for grass to grow. a grasshopper eats the grass. a bird swoops down and eats the grasshopper. a bobcat captures and eats the bird. mushrooms breakdown the bobcat when it dies.
Answers
The food chain consists of the following parts: sun, grass, grasshopper, bird, bobcat, and mushrooms.
The food chain begins with the sun, which provides the energy for the grass to carry out photosynthesis and grow. The grasshopper then feeds on the grass, obtaining energy and nutrients from it.
Next, a bird preys on the grasshopper, consuming it as a source of food. The bird, in turn, becomes the prey for a bobcat, which captures and consumes the bird to meet its energy needs.
The food chain does not end with the bobcat. When the bobcat dies, mushrooms come into play. Mushrooms are decomposers, which means they break down dead organic matter.
In this case, the mushrooms break down the remains of the bobcat, aiding in the process of decomposition. They help break down the organic materials and return nutrients back to the soil, completing the cycle.
Thus, the mushrooms play a crucial role in recycling the nutrients from the dead bobcat back into the ecosystem, sustaining the food chain and supporting the growth of other organisms.
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If you were making observations of someone mixing two substances together, how would you know if a chemical reaction took place?
Answers
if you were making an observation of two substances, The five conditions of chemical change would be color chage, formation of a precipitate, formation of a gas, odor change, temperature change. i hope this helps
Building Cladograms Based on DNA Sequence Data In this experiment you will formulate a hypothesis of evolutionary relationships of whales to other mammals based on their ecological characteristics and
test your hypothesis by performing a phylogenetic analysis based on DNA sequence data. Materials Checklist Computer with the internet access Procedure Determine the dietary preferences (herbivory, omnivory, or carnivory) and the habitat preference (aquatic or terrestrial) for the ingroup taxa based on your prior knowledge and help from online searches. Record the data in Table 10.3 Based on the ecological information in Table 10.3, develop a hypothesis that states which of the animals included in the analysis is the whale's closest relative. Enter the following URL into an address window of a browser to gain access to GenBank, an international public database of molecular sequences: http://www.ncbi.nlm.nih.gov/genbank/
Answers
Building Cladograms Based on DNA Sequence Data. Cladograms are branching diagrams that illustrate phylogenetic relationships among organisms. They are constructed from data that can be obtained from fossils, morphology, and DNA sequence data.
When building cladograms based on DNA sequence data, it is essential to obtain molecular data that can be used to compare nucleotide or amino acid sequences of the organisms in question. In this experiment, the aim is to build a cladogram based on DNA sequence data to test the hypothesis of evolutionary relationships of whales to other mammals.
To achieve this, the following steps are necessary:
Determine the dietary preferences and habitat preference of the ingroup taxaThis step involves finding out the ecological characteristics of the organisms included in the analysis. Specifically, information on the dietary preferences (herbivory, omnivory, or carnivory) and habitat preference (aquatic or terrestrial) should be obtained. This information can be found through online searches or other sources.
Record the data in Table 10.3After obtaining the ecological characteristics of the organisms, the data can be recorded in Table 10.3. This table is useful in organizing the data and helps in identifying the relationships between the organisms. Based on the ecological information in Table 10.3, develop a hypothesis
After recording the data, it is possible to develop a hypothesis based on the ecological information. For instance, the hypothesis can state which of the animals included in the analysis is the whale's closest relative. The hypothesis is important in guiding the analysis of the DNA sequence data. Enter the following URL into an address window of a browser to gain access to GenBankTo perform the phylogenetic analysis, it is necessary to access GenBank, an international public database of molecular sequences. The following URL can be entered into an address window of a browser to gain access to GenBank: http://www.ncbi.nlm.nih.gov/genbank/.Perform a phylogenetic analysis based on DNA sequence data after accessing GenBank, it is possible to perform the phylogenetic analysis based on DNA sequence data. The analysis should be guided by the hypothesis developed based on the ecological information.
The results of the analysis can be used to build a cladogram that illustrates the evolutionary relationships of whales to other mammals. The cladogram can be useful in further studies of the evolutionary history of these organisms.
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which era below is incorrect?
help please <3
Answers
Answer:
mesozoic
Explanation:
the other eras are ancient eras.
Which of the characteristics below would you use to differentiate between basalt and gabbro? Base your answer on your work with lab specimens and the information available on page 135 of your book View Available Hint(s) a.A gabbro weighs significantly less than a basalt of the same size.
b. Basalt is more felsic, and thus lighter in color than gabbro. c.Basalt has larger crystals than gabbro d.Basalt has two noticeably different crystal sizes within the same rock, and gabbro only has one crystal size within the same rock. e.Gabbro has larger crystals than basalt.
f. Gabbro is more felsic, and thus lighter in color than basalt. g.A typical gabbro has two noticeably different crystal sizes within the same rock, whereas a typical basalt only has one crystal size within the same rock h.A basalt weighs significantly less than a gabbro of the same size.
Answers
The characteristic that can be used to differentiate between basalt and gabbro is that gabbro has larger crystals than basalt which is option E.
This can be observed through examining lab specimens and is supported by information on page 135 of the book. Additionally, gabbro typically has two noticeably different crystal sizes within the same rock, whereas basalt only has one crystal size within the same rock. It is important to note that weight and color are not reliable indicators for distinguishing between basalt and gabbro.
A typical igneous rock called basalt is created when lava or magma solidifies. It stands out for its fine-grained texture and dark shade, which is typically black or dark grey. Pyroxene, feldspar, and olivine are just a few of the minerals abundant in basalt. It covers a major amount of the oceanic crust and a sizable portion of volcanic zones, and it is widely distributed on Earth. Large basalt plateaus can be formed by basaltic lava flows, and they can also produce distinguishing characteristics like columnar jointing. Basalt is frequently used as a construction material because of its sturdiness and resilience to weathering, notably in road paving, building stones, and aesthetic uses.
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Which of the following is Natural Selection?
A) Organisms develop traits that allow them to survive and reproduce
B) Inherited traits change over time
C) Traits that offer and advantage/benefit will passed on offspring
D) All are correct
Answers
explain the meaning of the term species
Answers
Species is defined as a group of living organisms that have similar characteristics genetically and are capable of interbreeding among themselves.
A biological species is a group of organisms that can reproduce with one another in nature and produce fertile offspring. Species are characterized by the fact that they are reproductively isolated from other groups, which means that the organisms in one species are incapable of reproducing with organisms in another species. The term species can also be defined as the most basic category in the system of taxonomy. Taxonomy is a scientific system that classifies organisms based on their biological characteristics. Species can also be defined based on a shared evolutionary history and ancestry. This method of defining species is called phylogenetics, which is the study of the evolutionary relationships among organisms. The evolutionary process by which a new species comes into being is called speciation.
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The mitotic phase of the cell cycle is the combination of mitosis and what other process?
Answers
Answer:
the cell cycle
Explanation:
Image of the cell cycle. Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
Answer:
cytokinesis :)
Explanation: