what is exact name of..
Thick Walled isodiametric dead cells
Answers
Answer:Sclerenchyma
Explanation:Sclerenchyma is thick walled dead lignified cells, they are hard and elastic. The sclerenchyma cells are divided into two groups namely fibers and sclereids. Sclerenchymatous fibers are branched/unbranched, long, hard, pointed cells with tapering ends, thick walls, and narrow lumen.
Answer:
Sclerenchyma is Greek word where "Sclero-" means hard and "enchyma" means infusion. This tissue consists of thick-walled, dead cells and protoplasm is negligible. These cells have hard and extremely thick secondary walls due to uniform distribution and high secretion of lignin and have a function of providing mechanical support
I hope that answers your question
Related Questions
Cartilage under high power of the microscope:
1. What is the shape of the cartilage cells? ( square, hexagonal, spherical or hemispherical)
2. Does each cell lie in cavity? if so, what is the name of this cavity?
3. Is the nucleus of the cell, oblong, oval or round?
4. Note that most cells are in groups. Are they mostly in groups of two, three or four?
5. What is the term of ground substance in which the cell clusters lie?
Answers
Under a microscope Its anatomy is extremely straightforward, and it is devoid of nerves or blood vessels.
Its anatomy is extremely straightforward, and it is devoid of nerves or blood vessels. Under a microscope, a thin slice from cartilage will reveal that it is made up of cells with rounded as well as bluntly angular shapes that are arranged in pairs of two or more within a granular or nearly homogeneous matrix. Not all of the cells are found in cavities. But, the cells that surround the lumen of his digestive system act like they are in a cavity. A significant portion of the human body is made up of the digestive and abdominal systems. Most cells have either or round oval nuclei. Apart for the reality that changes in nuclear structure are linked to a number of diseases and the ageing process, is hardly noteworthy in and of itself.
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Predict how each mutation would affect the amount (mass) of DNA in Calix's cells.
Point
Mutation
Chromosomal
Rearrangement
Nondisjunction
Mass of DNA
Increase Decrease No Change
0
Answers
The correct answers are:
Point Mutation: No change in the mass of DNA.Chromosomal Rearrangement: Possible increase or decrease in the mass of DNA.Nondisjunction: Possible increase or decrease in the mass of DNA.Point Mutation: A point mutation refers to a change in a single nucleotide base within the DNA sequence. Depending on the specific alteration, the impact on the mass of DNA in Calix's cells can vary. In most cases, a point mutation would not significantly affect the overall mass of DNA, as it involves a substitution, insertion, or deletion of a single nucleotide.Chromosomal Rearrangement: Chromosomal rearrangements involve larger-scale changes in the structure or arrangement of chromosomes. These alterations can result in a change in the overall mass of DNA in Calix's cells. For instance, certain rearrangements, like duplications or translocations, can increase the mass of DNA due to the presence of additional genetic material and on the other hand, deletions or inversions can lead to a decrease in the mass of DNA by removing or rearranging segments of the chromosome. Nondisjunction: Nondisjunction is a mutation that occurs during cell division, leading to an abnormal distribution of chromosomes. It can result in an imbalance in the genetic material and affect the mass of DNA. In some cases, nondisjunction can cause an increase or decrease in the mass of DNA depending on whether an extra chromosome or a missing chromosome is present, respectively.In conclusion, a point mutation typically does not affect the mass of DNA in Calix's cells, while chromosomal rearrangements and nondisjunction can potentially result in an increase or decrease in the mass of DNA.
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______ Process of taking material into the cell by means of infoldings, or pockets of the cell membrane. This occuers when taking in ______ molecules, clumps of food or whole cells.
Answers
Answer: Endocytosis, more
May not be right but ik the first one may be
Explanation:
PLS HELP!!!
the link below shows the plasmodium life cycle.
Explain in your own words how this disease can be spread among people
Answers
Answer:
breathing
Explanation:
this disease can be spread among people through breathing
Help!!
Cells of the skeletal system are specialized in their structure to store minerals. Which of the following is the function of these cells?
Produce chemicals that transmit signals.
Prevent the spread of disease in the organism.
Provide support to the body.
Absorb excess water released by digestion.
Answers
Answer: Provide support to the body.
Explanation:
The skeletal system is a system which is formed by the bones. The bones are important for the structure and function of the body. The bones are connected with the muscles to allow the movement of the body, and they protect the vital organs like heart, lungs, brains, and others. They provide support to the soft tissues, organs, and muscles of the body. They keep the human body upright. The skeletal system provide shape to the body. It provides support by acting as regions of attachment of soft body parts and muscles.
Arrange the tiles to show the sequence of the steps in a scientific investigation.
make an observation
ask questions
construct a hypothesis
test the hypothesis
analyze the results
and make conclusions
communicate the results
↓
↓
↓
↓
↓
Answers
Correct sequence is make an observation ask questions construct a hypothesis test the hypothesis analyze the results and make conclusions communicate the results.
The scientific method is the process of objectively establishing facts through testing and experimentation. The basic process involves making an observation, forming a hypothesis, making a prediction, conducting an experiment and finally analyzing the results.
7 steps of the scientific method include Make an observation, Ask a question, Form a hypothesis, or testable explanation, Make a prediction based on the hypothesis, Test the prediction, Use the results to make new hypotheses or predictions.
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The picture above shows barrier island. How did these barrier island MOST LIKELY form?
Answers
Answer:
a
Explanation:
b
These barrier islands are most likely formed by sand deposited by waves. So, the correct option is A.
What are Barrier islands?Barrier islands are defined as coastal landforms and a type of dune system which are flat or lumpy areas of sand that are formed by wave and tidal action parallel to the mainland coast which is usually in chains that include anything from a few islands to more than a few.
These islands are formed by waves repeatedly depositing sediment parallel to the shoreline, so wind and waves change according to weather patterns and local topographical features. Barrier islands constantly move, erode and grow which completely might as well disappear.
Thus, these barrier islands are most likely formed by sand deposited by waves. So, the correct option is A.
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Your question is incomplete, but most probably the complete question is:
The picture above shows barrier island. How did these barrier island MOST LIKELY form?
by sand deposited by wavesby sand eroded from the mainland by wavesby sand eroded from the mainland by windby sand deposited by wind
1. what is the name of a disease that exhibits multiple, grapelike, fluid-filled sacs or cysts in the kidney cortex?
Answers
The disease you are referring to is called Polycystic Kidney Disease (PKD). PKD is a genetic disorder characterized by the growth of numerous fluid-filled cysts in the kidney cortex. These cysts, resembling grape clusters, gradually enlarge the kidneys, ultimately leading to kidney failure.
There are two main types of PKD: Autosomal Dominant Polycystic Kidney Disease (ADPKD) and Autosomal Recessive Polycystic Kidney Disease (ARPKD). ADPKD is the more common type and typically develops in adulthood, while ARPKD is a rare form that affects infants and children.
The cysts in PKD can cause various complications, including high blood pressure, urinary tract infections, and kidney stones. As the disease progresses, it can lead to chronic kidney disease and eventually end-stage renal disease, requiring dialysis or kidney transplantation.
The exact cause of PKD is still unknown, but it is believed to involve mutations in specific genes that affect the development and function of kidney cells. Diagnosis of PKD usually involves imaging tests, such as ultrasound, CT scans, or MRI, which can detect the presence and size of cysts in the kidneys.
Currently, there is no cure for PKD, but treatment focuses on managing symptoms and slowing the progression of the disease. This may involve medications to control blood pressure, antibiotics for infections, and pain management. In advanced cases, dialysis or kidney transplantation may be necessary.
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The Milankovitch cycles describe the change in in the Earth's orbit around the Sun. caused by cyclical changes a) greenhouse gases Ob) ocean circulation Oc) biological diversity d) solar insolation
Answers
Milankovitch cycles are cyclical changes in the Earth's orbit around the Sun, caused by cyclical changes d) solar insolation.
The cycles are affected by three main factors: changes in the eccentricity of the Earth's orbit, changes in the tilt of the Earth's axis, and changes in the precession of the equinoxes. The eccentricity of the Earth's orbit changes over a period of about 100,000 years, moving from more circular to more elliptical, affecting the amount of solar radiation received by the Earth. Changes in the tilt of the Earth's axis occur over a period of about 41,000 years, shifting between an angle of 22.1° and 24.5°, altering the seasonal variation in solar insolation.
Changes in the precession of the equinoxes occur over a period of about 23,000 years, altering the timing of the seasons. Milankovitch cycles are the primary drivers of the glacial cycles that have occurred over the past 2.6 million years. The changes in solar insolation caused by the Milankovitch cycles have a profound effect on the Earth's climate, and are one of the main factors behind the observed climate changes over the past century. Therefore, the correct answer is option d) solar insolation.
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give two reasons that the wolf population is not at Hardy-Weinberg equilibrium
Answers
Answer:
HW equilibrium means no selective pressures. Selective pressures change the relative frequencies of the alleles in the gene pool. It also means the population does not have either immigration or emigration to change the ratios of alleles in the gene pool
The Hardy-Weinberg principle of genetic equilibrium tells us what to expect when a sexually reproducing population has no selection pressure, no gene flow, no nonrandom mating, not even genetic drift
Explanation:
The wolf population is not considered in a Hardy-Weinberg population as the population of wolves always remains in the state of migration, and there will be an occurrence of natural selection. For a population to be in a Hardy-Weinberg equilibrium there should be no migration and events of natural selection taking place
which of these terms refers only to living organisms?
biome
ecosystem
habitat
population
Answers
Answer:
population i think, I am not certain but it seems more likely, if its not population then it is biome
Explanation:
Choose the best explanation as to why both consumers and producers perform cellular respiration.
Although they may obtain their sugars in different ways, both consumers and
producers rely on cellular respiration to make ATP.
Answers
Cellular respiration is a process that both consumers and producers engage in to produce energy for their metabolic processes in the form of ATP (adenosine triphosphate).
Cellular respirationCells release energy through a process called cellular respiration, which breaks down organic molecules like glucose to power cellular functions including growth, movement, and reproduction.Cellular respiration takes place in the cells of consumers, like animals, to break down the organic molecules they eat, including proteins, lipids, and carbs, into smaller molecules that can be utilized to produce ATP. The animal's body temperature, mobility, and other activities are maintained by using this energy to drive cellular operations.Along with photosynthesis, cellular respiration also takes place in the cells of producers like plants.Although photosynthesis is the main way that plants make energy, it does not meet all of their needs; as a result, they also need to engage in cellular respiration in order to manufacture ATP for their cellular functions.Therefore, cellular respiration is a crucial activity in the functioning of living creatures and is carried out by both consumers and producers as a necessary way to generate energy and carry out their metabolic activities.learn more about cellular respiration here
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What is the function of xylem
Answers
Answer: Xylem is the specialised tissue of vascular plants that transports water and nutrients from the plant–soil interface to stems and leaves, and provides mechanical support and storage. The water‐conducting function of xylem is one of the major distinguishing features of vascular plants
Explanation: hoped this helped
Igneous rocks are classified based upon their mineral composition and
A Temperature
B density
C texture
D hardness
Answers
Answer:
Texture
Explanation:
the normal function of the prp protein in mammals is believed to be: the normal function of the prp protein in mammals is believed to be: assisting in normal synaptic development and function. assisting proteins in forming alpha-helices. assisting in normal membrane development and function. assisting proteins in forming beta-pleated sheets.
Answers
The normal function of the prp protein in mammals is believed to be: assisting in normal synaptic development and function.
Neurodegenerative illnesses that are deadly are brought on by the misfolding of the cellular prion protein (PrPC). Although PrPC is largely conserved in mammals, this suggests that it performs advantageous activities that prevent its evolutionary extinction. When PrPC is removed from mice, the peripheral nervous system undergoes clear anatomical and functional changes. Many more phenotypes were associated with the absence of PrPC, although some of these were later discovered to result from genetic errors in the underlying animal models. Here, we review the physiologic functions of PrPC that have been proposed for both the central and peripheral nervous systems and emphasise the necessity for a critical reevaluation of these functions using fresh, stringently monitored animal models.
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During the attenuation of the trp operon, which stem loop leads to mRNA synthesis of the entire operon during tryptophan starvation? A. 2-3 B. 2-4 O C. 1-2 O D. 1-3 O E. 3-4
Answers
The trp operon is a set of genes in bacteria that are involved in the biosynthesis of tryptophan, an essential amino acid. The attenuation of the trp operon refers to the regulatory mechanism by which the synthesis of the operon is controlled in response to the levels of tryptophan in the cell.
During tryptophan starvation, when cellular levels of tryptophan are low, the trp operon is induced to be transcribed and translated in order to produce more tryptophan. This is achieved through the formation of a specific stem loop structure in the leader region of the trp mRNA, which regulates the transcription termination and allows for full-length mRNA synthesis.
Among the options provided, stem loop 2-3 is the one that leads to mRNA synthesis of the entire operon during tryptophan starvation. Stem loop 2-3 prevents the formation of a transcription terminator structure, allowing RNA polymerase to continue transcription of the downstream trp operon genes, leading to the synthesis of the entire operon and ultimately increasing the production of tryptophan in the cell.
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What takes place in a cell’s mitochondria?
A:protein synthesis
B:photosynthesis
C:cellular respiration
D:DNA replication
Answers
Answer:
C: cellular respiration
Explanation:
It's when which energy is released from the foods such as sugars into the cell.
All the different plant populations make up the plant ?
Answers
All the different plant populations make up the plant community in this swamp. The plants are part of a bigger ecosystem that contains many abiotic and biotic factors.
What is an Ecosystem?An ecosystem may be defined as a place or an area that involves individuals of different species that live together and interact with one another for the purpose of food, shelter, and space.
In ecology, a community may be defined as a group of individuals belonging to different species that are living in the same area at a given time.
So, all the different plant populations make up a plant community.
Therefore, the community is the collection of all different forms of species but the ecosystem is the community has highly influenced by abiotic and biotic factors.
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describe factors affecting species richness and explain how and why the species richness of a wheat field might differ from that of a coral reef.
Answers
The four most important factor affecting species richness are geographic factors, biotic factors and abiotic factors.
Species richness refers to the number of species in a community. Species diversity is a complex phenomenon and includes a measure of the number of species in a community, and also measures of the abundance of each species in a particular community. It is said that the more isolated an island is, the lower will be its species richness. Geographic factors are observation, available species pool and dispersal patterns. Biotic factors are competition or predation. Abiotic factors are habitat area, latitude, altitude, temperature, and rainfall.
Species richness of coral reef is based mainly on biotic and abiotic factors such as water, minerals, sunlight etc. They occupy majority of marine diversity and a safer habitat to many small species due to which genetic speciation has been a prominent feature of coral reefs. In a wheat field, the species richness occurs mainly through pollination by several factors, the residue of microbes that exist there and the food patterns of animals that live in the wheat fields. More the pollination better could be the genetic diversity. Also, genetic modified wheat can also be tested but this is impossible in corals due to very low human interference scientifically.
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do you really understand meiosis and non-disjunction? try these questions: 1. if an individual has the genotype xxy, did non-disjunction occur in their mother or their father (or both) and at which division(s), meiosis i or meiosis ii?
Answers
The genotype of the mother is XX, while that of the father is XY. If a non-disjunction occurred in an individual with the genotype XXX, it would occur in her mother since only from her mother could she acquire two Xs, but from her father, a non-disjunction would result in a XXY.
This non-disjunction occurred during meiosis I, when two copies of the same chromosome are transferred to separate cells. During this phase, the separation of these two chromosomes did not occur since they were both Xs from the mother brought together to the new haploid cell.
The non-disjunction on meiosis II simply indicates that two chromatids from a chromosome did not split and does not result in copies.
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PLEASE HELP
Colorblindness is a recessive trait that is passed along to human offspring. The
inability to differentiate between or see some colors is controlled by a gene that is
found on the X chromosome. Why are more males affected by colorblindness than
females?
Colorblindness is more often found in males because they have less of a need to
see color
Colorblindness is more often found in males because they receive only one Y
chromosome and therefore men always will have colorblindness because
females do not have a Y chromosome
Colorblindness doesn't occur more often in males it happens equally in both
male and females
Answers
Answer:
The answer is the second one.
Explanation:
The answer is the second one because males have one x chromosome and one y chromosome. Females have only two x chromosomes. B makes more sense because males are more likely to have to deal with se-linked siorders because of their lack of x chromosomes.
Does this help?
what can a negative consequence of humans being hunter-gatherers?
A. they needed to stay in one location for food
B. Nate cultivated their own food
C. they had to move around to find food
D. they had to have large families to help on the farm
Answers
Answer:
C
Explanation:
1) According to the global ecological footprint by nation, which country likely has the smallest (per capita) reliance on non-renewable resources?
es
A) USA
B) China
France
D) South Korea
Answers
Answer: france
Explanation:
france
Aerobic respiration takes place in the mitochondria because?
Answers
Answer:
Glycolysis takes place in the (g)cytoplasm. Two molecules of ATP and two molecules of (h)NADH are formed for every glucose molecules that is broken down. (i) Aerobic respiration takes place in the (j) mitochondria. It is aerobic because the process requires (k)oxygen.
Explanation:
Answer:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions.
Explanation:
The ______ layer(s) is/are missing from the meninges in the peripheral nervous system. a. pia b. dura c. arachnoid d. pia and arachnoid
Answers
The arachnoid layer(s) is/are missing from the meninges in the peripheral nervous system. So, option C is accurate.
The meninges are protective layers of connective tissue that surround and support the central nervous system, which includes the brain and spinal cord. The three layers of the meninges, from outermost to innermost, are the dura mater, arachnoid mater, and pia mater.
However, in the peripheral nervous system (PNS), which comprises the nerves and ganglia outside the central nervous system, the arachnoid layer is absent. The PNS consists of nerve fibers that extend from the spinal cord to the rest of the body, and it does not have the same protective covering as the brain and spinal cord. Therefore, the arachnoid layer, which lies between the dura mater and pia mater, is not present in the meninges of the peripheral nervous system.
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What can you infer about its phylogeny? place its class on the correct branch of the phylogenetic tree. Identify the key derived characters that distinguish this animal from invertebrate chordates.
Answers
Phylogenetic inference is the practice of reconstructing the evolutionary history of related species by grouping them based on shared ancestry.
How to distinguish this organism from invertebrate?If this organism belongs to vertebrates then the notochord is replaced with a spinal cord. This difference is the main feature that separates invertebrate from vertebrate with a backbone.
So we can conclude that presence of backbone is the main difference between invertebrate and vertebrate organism.
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I neeeeeddd helppppppp
Answers
Answer:
It's D
Explanation:
A: Is wrong due to the fact that longer time spans give more credibility
B: Multiple group testing is needed
C: C makes it better because multiple groups would create more diversity than just 2 groups, but this is unnecesary
D: We need a control group
Explain how scientists use geologic time to determine the age of landforms.
Answers
geologic time use the layer of Rock to describe relationship of events and their sequence chronological order over the history of Earth the layering is a result of the buildingup tiny beats of rocks sediments or Lava cooling at the surface of many years think think of it like a stock of pancakes-the bottom layer is the one that was placed first and therefore is the oldest. the sediments that create the layer of the earth as said one or top of the other
Examine the soil profile and use the drop-down menu to select what each label identifies.
Label O (top soil, organic material, weathered rock)
Label A (top soil, organic material, subsoil)
Label B (top soil, subsoil, weathered rock)
Label C (organic material, subsoil, weathered rock)
Answers
Answer: The answer for Label O is: Organic material. Label A is: topsoil. Label B is: subsoil. Label C is: weathered rock
Explanation:
I hope this helped answer your question and I'm sorry if it didn't help
Answer: O: organic material A: topsoil B: subsoil C: weathered rock
Explanation: Credit to the person above or below me
whats the order from biggest to smallest ecosystem,population,community,organism
Answers
Answer:
Ecosystem, community, population, Organism
Explanation:
Organism is a single species
Population is a group of the same species
Community is a group of different populations
Ecosystem is where communities live
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