Answer:
The nucleus (plural, nuclei) houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins.
list and explain the pests of maize
Answer:
Pests of Maize and Their Control
Leaf Feeders
Corn Leaf Aphid.
Spider Mites.
Thrips.
Dingy Cutworm.
Armyworm.
Grasshopper.
Corn Flea Beetle.
Stink bug.
Explanation:
True or false?
Convection currents keep our atmosphere mixed.
Where do carnivorous plants typically exist? a. In areas with limited carbon dioxide
b. In areas with inadequate amounts of soil
c. In areas with adequate amounts of soil
d. In areas with limited oxygen
e. In areas with limited nitrogen
f. In areas with little water
Answer:
So it would be B since the areas have inadequate amounts of soil.
Explanation:
The habitats of carnivorous plants are varied but usually involve wet, low-nutrient sites including bogs, swamps, waterbodies, watercourses, forests and sandy or rocky sites.
Epithelial surfaces provide the first line of defense against infection by the use of several types of mechanisms. One of the chemical mechanisms used by epithelia is:
Epithelial surfaces provide the first line of defense against infection by the use of several types of mechanisms. One of the chemical mechanisms used by epithelia is the secretion of mucus.Mucus is a thick, viscous liquid that covers the surface of mucous membranes.
It consists of water, glycoproteins, lipids, and salts. The primary role of mucus is to trap pathogens, dirt, and other debris that enter the body. Mucus is particularly abundant in the respiratory, digestive, and urogenital tracts, where it helps to prevent infections and other diseases.In the respiratory tract, mucus traps dust, pollen, and other airborne particles that are breathed in. It also helps to remove bacteria and viruses from the lungs. In the digestive tract, mucus lines the walls of the stomach and intestines, where it helps to protect against acid and enzymes.
It also lubricates the passage of food through the digestive system.In the urogenital tract, mucus helps to protect against sexually transmitted infections and other diseases. It lines the walls of the vagina and cervix in females and the urethra in males, where it helps to prevent the entry of pathogens.Overall, the secretion of mucus by epithelial surfaces is an important chemical mechanism of defense against infection.
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What are Supplementary and complementary genes, explain with example.
Supplementary and complementary genes are two concepts related to gene interactions and inheritance patterns.
1. Supplementary Genes:Supplementary genes refer to a pair of genes that are located on different chromosomes and work together to produce a specific trait. Each gene in the pair independently contributes to the expression of the trait, and the presence of both genes is required for the full expression of the trait. When either one or both of the genes are absent, the trait will not be fully expressed.
An example of supplementary genes can be seen in the flower color of sweet peas. Let's say there are two genes involved: Gene A and Gene B. Gene A controls the production of pigment for blue flowers, and Gene B controls the production of pigment for red flowers. Only when both Gene A and Gene B are present in the plant, the flowers will show a full expression of color, resulting in purple flowers. If either Gene A or Gene B is absent, the flowers will be either blue or red, respectively.
2. Complementary Genes:Complementary genes refer to a pair of genes that are located on the same chromosome and work together to produce a specific trait. However, unlike supplementary genes, the presence of both genes is not necessary for the trait to be expressed. Each gene in the pair independently contributes to the expression of the trait, but if both genes are present, they complement each other, resulting in an enhanced or more pronounced expression of the trait.
An example of complementary genes can be seen in the coat color of some animals, such as Labrador Retrievers. Let's say there are two genes involved: Gene C and Gene D. Gene C controls the production of pigment for black coat color, and Gene D controls the production of pigment for brown coat color. If an individual carries two copies of Gene C, it will have a black coat. If an individual carries two copies of Gene D, it will have a brown coat. However, if the individual carries one copy of each gene (Gene C and Gene D), the genes complement each other, resulting in a unique coat color known as "chocolate," which is a more pronounced expression compared to having just one gene.
In summary, supplementary genes require the presence of both genes for full expression of the trait, while complementary genes enhance or modify the expression of the trait when both genes are present.
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Nuclear DNA typing can be most successfully accomplished on hairs that have been removed during which stage of growth
Answer:
Anagenic
Explanation:
What will happen to the other members of the food chain if the grasshoppers are removed?
Answer:
some of the animals that feed on the grasshoppers will die
Explanation:
if they do not have the regular supply of food, they will die of hunger
Ere is a mutation in a bacterial gene x's promoter that changes a nucleotide from a t to an a in a postition between the -10 and -35 elements. what does this mutation do (most likely)?
The ere mutation plays an important role in Breast Cancer.
What is the role of ere mutation in Breast cancer?
The backbone of therapy for estrogen receptor-positive bosom tumors, endocrine treatment impressively brings down bosom malignant growth-related mortality and sickness recurrence. The atomic chemical receptor family incorporates the estrogen receptor (ER), which capabilities as a ligand-enacted record factor. A conformational change in the receptor is achieved by the communication of the ligand. The receptor then moves to the core, joins as a homodimer to explicit DNA groupings known as estrogen reaction components (ERE), and controls the record of a few objective genes. The ER's space configuration comprises a pivot space that partitions the ligand-restricting area from the DNA-restricting area, a profoundly monitored DNA-restricting area that intercedes specific acknowledgment of ERE, and an N-terminal chemical free transactivation area (AF1).To learn more about Mutation refer to:
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what charge does the oxygen atom have in a molecule of water
Answer:
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.
Explanation:
All changes saved
1. If a cell's organelle worked in an actual human factory and had the role of the electric generator,
which organelle would it be?
O mitochondrion
O lysosome
ribosome
Golgi apparatus
Answer:
mitochondrion
Explanation:
North Carolina beaches have too high in to low tides every day if the beach is a high tide at noon what would you see if you look again about six hours later
The time between high tide and low tide is approximately six hours, so if you looked again about six hours later, you would see a low tide.
What is the level of tides in beach of North Carolina?If the beach in North Carolina had a high tide at noon, and you looked again about six hours later, you would likely see a low tide. This is because North Carolina, like many other places, experiences two high tides and two low tides every day due to the gravitational pull of the moon on the Earth's oceans.
During high tide, the water level rises and covers more of the beach, while during low tide, the water level recedes and exposes more of the beach. The time between high tide and low tide is approximately six hours, so if you looked again about six hours later, you would see a low tide. The exact timing and height of the tides can vary depending on various factors, such as the phase of the moon and the geography of the area.
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Positrons:
A.have a positive charge
B.are similar to electrons
C.were discovered by Carl Anderson
D.all of the above
E.none of the above
Answer:
D. all of the above
Explanation:
A male which has a long beak and a heterozygous genotype is crossed with a female that has a short beak. What is the ratio of offspring with long beaks to offspring with short beaks?
Assuming that the long beak trait is dominant and the short beak trait is recessive, the male with a heterozygous genotype (Il) would have a 50% chance of passing on the long beak allele (L) to its offspring and a 50% chance of passing on the short beak allele (l).
When crossed with a female with a short beak genotype (ll), all of the offspring would receive one copy of the short beak allele from the mother. Therefore, the ratio of offspring with long beaks (Ll or II) to offspring with short beaks (ll) would be 1:1. So, half of the offspring would have long beaks and the other half would have short beaks.
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Guys pls help me!!!!!!!
Answer:
The answer is simple sugar
Explanation:
Prehensile tails are? present in catarrhine primates. common in platyrrhines. made strictly of muscle. present in most primates.
Platyrrhines are the primates that belonging to the parvorder Platyrrhini. They are characterized by having prehensile tail a broad, and flat nose and with the sideways-facing nostrils. They have the prehensile tails, which are the long, grasping tails.
Despite its usefulness, the prehensile tail is also found only in the two groups of the primates: Cebus – the capuchin monkeys– and the atelines, a group that is includes the howler (Alouatta spp.) and the spider (Ateles spp.) the monkeys.
What primates have the prehensile tails?
The only primate the genera (Figure 1) that possess prehensile tails are the spider monkeys (Ateles), woolly spider and the monkeys (Brachyteles), howler monkeys (Alouatta), the woolly monkeys (Lagorix), and the capuchin monkeys (Cebus)
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What are some silent point mutations?
AAA (codes for the amino acid lysine, Lys) being mutated to AAG (which also codes for Lys) are some silent point of mutations.
One of the three forms of substitution mutations (also known as point mutations), along with nonsense and missense, is a silent mutation. A silent mutation specifically happens when a change in a gene's DNA sequence has no impact on the subsequent amino acid sequence of the protein it codes for. Since both of those codons translate to the same amino acid, Ser, or serine, there is no actual change in the protein produced by this gene if the DNA sequence changes from AGC to AGA, for instance. However, the matching RNA would change from UCG to UCU. Because it has no immediate impact, the mutation is said to be "silent." The quiet mutation is one of the various point mutation kinds, which are all displayed below.
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Prompt
There are multiple lines of evidence that provide support for common ancestry and evolution. Write 3-4 paragraphs
describing at least three of them in detail. Provide at least one example for each line of evidence.
<< Read Less
Answer:
Here's a better answer.There are multiple lines of evidence that provide support for common ancestry and evolution; this would be homologous features of anatomy and embryology and fossil records.
In comparative anatomy, there are many similarities between species because all life is related. Homology is similarities seen because of the ancestry of features or genes in an organism. Similarities can show descent from common ancestors and similarities can be seen in body structures, development, and DNA. Homologous structures are similar traits found in two different species that are the result of having a common ancestor. These structures are similar but may have different functions. An example of this might be the homologous structures in the limbs of humans, cats, whales, and birds. And then there are analogous structures, which similarly is that the structure of different species are similar because the trait is advantageous, not because they are related. An example of this is sharks and dolphins having similar fins. Along with anatomy is Embryology. Different species can have similar embryos because they come from a common ancestor. They may start with the same developmental plan but change drastically as they grow up. An example of this is seen in the early stages of development between fish and chicken embryos.
Next up, the fossil record provides evidence that supports common ancestry and evolution. The fossil record provides us with visual evidence for evolution. The fossil record directly allows us to pinpoint if there are any similar structures amongst organisms and see if there are any vestigial structures from ancestors that remain in organisms that still roam today. The fossil record depicts evolutionary change over the past four billion years, which can be seen through transitional forms, increasing complexity of life, and geographical distribution. Transitional forms are fossils that show intermediate states between an ancestral species and its evolutionary descendants. Increasing complexity is seen as life on earth becomes more complex. That and geographic distribution which has been studied closely and found that the continents have moved over time and that the fossil record reflects this movement. Fossils of different animals can be found on different continents around the world due to continental drift.
Explanation:
The various pieces of evidence that support common ancestry are homologous organs, fossil records and embryological studies.
What is common ancestry?The phrase "common descent" in evolutionary biology refers to a particular group of species' shared ancestry. The creation of new species from an original population is a component of common descent. Two creatures are considered to be closely related if they have a recent common ancestor.
In contrast, molecular genetic techniques can also be used to establish shared ancestry from a single universal ancestor of all living things. Natural selection and other factors, such geographic isolation, are considered to have contributed to many speciation episodes during this development from a universal common ancestor.
According to the common ancestry idea, every living thing descended from a single progenitor. Hence, the Theory of Common Descent contributes to our understanding of why traits in species living in different geographic regions vary, why some traits are highly conserved across broad animal classifications (such as vertebrates or tetrapods), why seemingly unrelated species (such as birds and reptiles) share hereditary physical and genetic traits, and why successfully adapted organisms typically have more offspring.
Therefore, embryological studies, fossil studies and homologous organs can help in the study of common ancestry.
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Can someone figure this out for me? I've been stuck on this for hours
Research Question: How has climate change in the last 30 years affect the genetic physiology, and morphology of organism?
How can I make my ESS IA better, please help me. I am not doing any experiments so I am using secondary data and need to edit my ESS IA to fit the newer research question stated above. Please help me.
Please help me with my ESS IA I need help the attachment no.1 is what I need help updating to match my research question stated above.
The other attachments are to help you as references.
List five reasons to explain why the leaf is specialized for its function.
Answer:
has transparent epidermis to allow light to pass for photosynthesis
has chlorophyll to trap sunlight energy needed in photosynthesis
has stomata to allow passage of water and gases
Which of the following user types has the highest privileges in a Windows enterprise environment? O Delegated admin Guest user O Domain admin Enterprise admin
Enterprise admin has the highest privileges in a Windows enterprise environment.In a Windows enterprise environment, there are different user types that have different privileges.
An Enterprise admin is a user who is responsible for managing the entire domain infrastructure of the organization.A domain is a collection of computers and devices that share a common directory database, security policies, and other resources. The Enterprise admin has the ability to add or remove domains, create new user accounts, assign privileges to user accounts, manage security policies, and manage domain controllers.
The Enterprise admin can also manage other administrators such as Domain admins and Delegated admins.A Delegated admin is a user who has been granted permission by an Enterprise admin to perform specific administrative tasks within a domain or set of domains. A Domain admin is a user who is responsible for managing a specific domain within the organization. A Guest user is a user who has limited access to resources within the domain. Hence, the correct option is Enterprise admin.
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TRUE/FALSE. Interpret the models of three phyla of worms. Nematoda -Cuticle Mouth Anus Annelida Anus Mouth Platyhelminthes Drag "True" or "False" to the end of each statement. Reset Help True Nematoda is the only phylum of the three with a cuticle. True False Since none of these phyla have a head, none have an anterior and False Pihelminthes uses the same opening as a "mouth and an anus." False False Since none of these phyla have a head, none have an anterior end. False Platyhelminthes uses the same opening as a mouth and an anus." False These three phyla of worms are the same size. False All three models show cross sections. False Annelida is the only phylum of the three with segmentation, False 2
in parts of Central Asia.
Using water sources for irrigation purposes has caused
A. floods
B. droughts
C. corrosion
D. desertification
Answer:
it is d
Explanation:
What factors promote
and limit the growth of fires?
Which of the following is most likely pseudoscience?
Option A. A salesman describes how sickness is caused when your body’s energy is not flowing properly and his wristbands help balance your energies is the most likely pseudoscience.
What is pseudoscience?Pseudoscience is a belief or statement which is presented as scientific but is not in accordance with the scientific method. They are usually claims or beliefs that are easy to disprove with the scientific method, since their claims are vague and contradictory instead of rigorous evidence.
Therefore, we can confirm that option A. A salesman describes how sickness is caused when your body’s energy is not flowing properly and his wristbands help balance your energies is the most likely pseudoscience.
Which of the following is most likely pseudoscience?
A. A salesman describes how sickness is caused when your body’s energy is not flowing properly and his wristbands help balance your energies.
B. A scientific journal explains the procedure of an experiment to determine the density of Earth’s layers by detecting changes in the speed of waves passing through them.
C. A doctor recommends an antibiotic to cure an infection.
D. The Environmental Protection Agency publishes weekly updates on the radiation levels at various beaches and warns vacationers not to sunbathe without using sunscreen.
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Why do cells age and die?
No one knows for sure
Radiation
Protein changes
Changes in molecular shape
The cell age and die because of changes in proteins. The correct option is C.
What are cells?
Cells are living units that together form an organism. They contain cell organelles, and the cell organelle performs the carious function of the body. Cells are made up of macromolecules, like protein, lipids, and carbs.
There are various types of cells that perform different functions of the body. Old cells die and new cells are made from the old cells. The old cells die because of a change in the protein structure of protein denaturation.
Thus, the correct option is C. Protein changes.
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Could you pleaseeee answer question 1 and 2 ASAPPP
Answer:
1. C
2. B
Explanation:
1. When a plant cell looses some water due to dehydration or being placed in a hypertonic solution, the term used to describe the cell's intial, not severe shrinkage is 'flaccid'.
Here, it's clear that the cell shrank so much that the cell membrane pulled away from the cell wall. The correct term for this severe shrinkage is 'plasmolysed'.
We don't use 'wilted' as a term to describe a cell. We use it to describe the plant as a whole.
2. This is the function of each. Water and ions in xylem and sugars like sucrose in phloem.
Do sanitizers work for all people as tools to kill viruses?
Answer:
No they do not.
Explanation:
and NEVER use hand sanitizer it does get rid of bacteria but it gets rid of bad AND good bacteria, and good bacteria we NEED.
Although all forest ecosystems have a good amount of rainfall and experience all four seasons, which biome is a bit colder with slightly less rainfall than the others?
taiga
rainforest
temperate
rocky
Answer: taiga
Explanation:
Biome which is a bit colder with slightly less rainfall than the others is called Taiga.
What is Taiga biome?The taiga, also known as the boreal forest or coniferous forest, is a biome characterized by long, cold winters and short, cool summers. It is dominated by coniferous trees, such as spruce, pine, and fir, and receives an annual rainfall of about 40-100 cm.
In contrast, rainforests have high rainfall, and temperate forests have milder temperatures and more rainfall, while rocky biomes are not defined by climate but rather by the presence of rocky terrain.
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Which of the following cell types become foam cells?
Erythrocytes
Platelets
T cells
Macrophages
Neutrophils
Macrophages become foam cells. The correct option is "D".
Foam cells are a type of immune cell that is formed when macrophages take up and accumulate large amounts of modified low-density lipoproteins (LDL) in the arterial walls. Macrophages are a type of white blood cell that plays a crucial role in the immune response by engulfing and digesting foreign substances, cellular debris, and pathogens.
In the case of atherosclerosis, a condition characterized by the build-up of fatty plaques in the arteries, macrophages within the arterial walls can engulf and accumulate excessive amounts of LDL particles, leading to the formation of foam cells. Foam cells contribute to the progression of atherosclerosis by promoting inflammation and the formation of plaques. Erythrocytes, platelets, T cells, and neutrophils do not typically undergo the transformation into foam cells.
The correct option is "D".
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------The given questions is incomplete, the complete questions is:
"Which of the following cell types become foam cells?
a)Erythrocytes
b)Platelets
c)T cells
d)Macrophages
e)Neutrophils"--------
macrophages are the cell type that becomes foam cells.
foam cells are a type of immune cell that play a role in atherosclerosis, a condition characterized by the buildup of plaque in the arteries. These cells are formed when macrophages, a type of white blood cell, engulf and accumulate excessive amounts of cholesterol and other lipids.
Macrophages are part of the body's immune response and are responsible for engulfing and removing foreign substances, including cholesterol. However, when there is an excessive amount of cholesterol in the bloodstream, macrophages can become overwhelmed and unable to effectively remove it. Instead, they accumulate the cholesterol and transform into foam cells.
Erythrocytes, platelets, T cells, and neutrophils do not become foam cells. Erythrocytes, also known as red blood cells, are responsible for carrying oxygen throughout the body. Platelets are involved in blood clotting. T cells are a type of white blood cell involved in the immune response. Neutrophils are another type of white blood cell that play a role in the body's defense against infections.
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