scientists have developed a new herbicide which farmers can use to control unwanted plants in their crop fields. the chemical works by blocking the production of proteins involved in the capture and storage of energy. which two organelles are most likely to be affected by this chemical?

Two of the deadliest medical conditions are coronary artery disease (CAD) and stroke. Heart damage from CAD is worse than brain damage from stroke.

Cholesterol, a waxy substance that accumulates inside the lining of the coronary arteries to create plaque, is a common contributor to coronary artery disease. This deposit has the potential to completely or partially obstruct blood flow in the heart's major arteries.

When lipids, cholesterol, and other chemicals build up on the inside walls of the heart arteries, coronary artery disease develops. Atherosclerosis is the name of this condition. The accumulation is known as plaque. The arteries may narrow due to plaque, preventing blood flow.

When anything prevents blood flow to a portion of the brain or when a blood artery in the brain bursts, a stroke, also known as a brain attack, happens. The brain either ages or suffers harm in both scenarios. A stroke can result in long-term incapacity, permanent brain damage.

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The length of the bone shows that the body has been dead about four years. Option B

We know that the skeleton is the part of a person that remains after the individual has died. It is composed of the bones of the deceased. The length of the bone is a determinant of the length of time within which the person died.

This is because, the changes in the length of the bone gives insight into the degeneration of the bone cells which follows the death of the human.

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Answer:

false

Explanation:

The skin is a critical organ that covers the entirety of the body's exterior and functions as a barrier that defends the body from viruses and injuries that can be caused by the surrounding environment.

The skin is the largest organ in the body; it extends from the inside of the body to the outside, has a thickness of about two millimeters, and weighs around six pounds on average. It protects the body against excessive heat and light, as well as injury and infection. The skin is also responsible for regulating the temperature of the body, collecting sensory data from the surrounding environment, storing water, fat, and vitamin D, and playing a function in the immune system, which serves to protect us from disease.

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As the chromosomes pair, they sometimes undergo a process called crossing-over. It is true that B. During crossing-over, bits and pieces of the homologous chromosomes are exchanged.

When chromosomes of the same type align during meiosis, a process known as crossing over occurs in cells. Parts of a chromosome can be switched when two chromosomes, one from the mother and one from the father, align. The genes on the two chromosomes are the same, but they may be in different forms.

A process known as genetic recombination occurs when a maternal and homologous paternal chromatid breaks the DNA double helix during chromosomal crossing-over to exchange fragments between the two non-sister chromatids in a reciprocal manner.

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Meiosis is a process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell. Meiosis usually involves two distinct divisions called meiosis I and meiosis II. By the end of meiosis, a single diploid cell has produced four haploid cells.

After interphase I, the cell begins to divide, and the chromosomes pair up. In prophase 1 of meiosis, each replicated chromosome pairs with its corresponding homologous chromosome. This pairing forms a structure called a tetrad, which contains four chromatids. As the chromosomes pair, they sometimes undergo a process called crossing-over.

Which is a true statement of crossing-over?

A. Homologous chromosomes move to opposite ends of dividing cells

B. During crossing-over, bits and pieces of the homologous chromosomes are exchanged

C. The DNA of the diploid cell is copied

D. Crossing over decreases genetic diversity​

Bone is made of matrix and it is unique from any other connective tissue because of it's strength.

Specialized connective tissue made up of cells, fibers, and pulverized material makes up bone. Its extracellular components are mineralized, which makes it significantly stronger and more stiff than other connective tissues. As a result, bone is perfectly adapted to carry out its most well-known function within the body, that of mechanical support.

Bone in the upper extremity acts as a structural support for the hand when it moves as a closed kinetic chain and as attachment points for muscles to create motion at specific bone-to-bone linkages. The latter enables the hand to move through space in opposition to gravity and other outside forces.

Bone must be rigid to resist deformation and flexible to absorb energy in order to perform its mechanical function.

Before examining frequent ailments and elements affecting the health of the bones in the upper extremities, the current article gives a general overview of the morphology and physiology of bone tissue.

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There are three types of blood vessels: arteries, veins, and capillaries. Arteries carry blood away from the heart. Veins carry blood back to the heart. Capillaries surround the body's cells and tissues, sending and receiving oxygen, nutrients, and other substances.

Arteries, veins, and capillaries carry blood. All blood vessels naturally carry blood. Like veins, arteries are made up of three layers of her. An inner layer consisting of epithelial cells, an outer tissue layer, and a muscle layer in between. Veins carry blood back to the heart. They resemble arteries, but are not as strong or thicker. Unlike arteries, veins contain valves that allow blood to flow in only one direction. (Arteries do not have valves because the pressure from the heart is so great that blood can only flow in one direction.) Arteries carry blood away from the heart. Veins carry blood back to the heart. The smallest blood vessels, capillaries, connect arteries and veins.

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If indeed the AED does not come with kid pads, use an adult pad instead.

Children who are 8 years old and older can use adult pads. For a kid under the age of eight, adult pads can be used, but you might need to apply them different than how it is depicted on the pads: place one on the front of the chest and the other on the back, making sure they do not touch. Some AEDs contain a switch that may be configured to shock children. If a switch is present, turn it on while working with children under the age of eight. A shock for an adult should be administered if the AED can't deliver a shock for a child. instructions: One pad should be placed behind the right collarbone and to the rear of the sternum.

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Coral reefs form an important part of the ecosystem. It acts as a buffer, natural barrier, food, income, and shelter. Hence, it is important to protect coral reefs from destruction.

One of the most important ecosystems in the world is the coral reef. A healthy coral reef can supply some of the most important and required ecological services. Ocean reefs serve as a buffer to protect shorelines and coastal populations from storms, hurricanes, and large waves. This action thus prevents coastline erosion while also preventing loss of life and protecting property, such as houses, ports, and marinas.

Numerous species of fish, crabs, shrimp, urchins, sponges, algae, sea turtles and other organisms can be found in coral reefs. Because they have access to a variety of food sources and may hide from predators, these organisms choose to live on coral reefs.

It also provides food, income, coastal protection, and other things for about 500 million people worldwide. They are also essential for medical research because the compounds found in coral reef plants and animals have been used by researchers to create cures for skin cancer, leukemia, ulcers, and cardiovascular illnesses. Because of these roles of coral reefs in the ecosystem, it is important to protect this species from destruction.

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In a signal transduction pathway, the response stage is activated by enzymes called kinases and the response is turned off by enzymes called signaling is turned off by enzymes called phosphodiesterase.

The interaction of extracellular signaling molecules and ligands to receptors on the cell surface or inside the cell that activate actions inside the cell to elicit a response is referred to as the signal transduction pathway. The reaction can then change the metabolism, shape, and gene expression of the cell.

Phosphodiesterase (PDEs) are enzymes that control the intracellular levels of cyclic adenosine monophosphate and cyclic guanosine monophosphate, and so play an important role in a variety of cellular activities. Phosphodiesterase (PDEs) are enzymes that regulate cAMP and cGMP homeostasis. They are members of a protein family that encompasses 11 subfamilies with varying substrate specificities. Their primary purpose is to catalyze cAMP, cGMP, or both hydrolysis reactions.

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Poas volcano is above the frost line, and temperatures below freezing are possible. Nearly constant winds and saturating humidity contribute to biting cold at the rim.

Ovian moons has been the four largest satellites like the moon of the Jupiter ie the Lo, Europa, Ganymede, Callisto and were first seen by the galileo. They are the amiugly the largest moons with radii larger than the dwarf planet.

Lo has more than 400 active volcanoes and dotted more than 100 mountains and has an extremely thin atmosphere made up of sulfur dioxide.

Therefore, Poas volcano is above the frost line, and temperatures below freezing are possible. Nearly constant winds and saturating humidity contribute to biting cold at the rim.

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The three types of mutations that occur in the DNA are insertions, deletions, and substitutions of bases.

In base substitutions mutation, one or more base pair is substituted by another base in the DNA sequence. The point mutation is base substitution in which a single nucleotide is changed.

In insertion mutation, one or more base pair is inserted in the DNA sequence resulting in frame-shift mutations. the entire reading frame of mRNA gets changed due to single or double nucleotide insertions, but if three nucleotide are inserted then frame-shift does not takes place.

Similarly, the deletion of one more nucleotide from the DNA sequence results in a frameshift in the reading of genetic information for protein synthesizing.

Hence, mutations change the genetic information of organism.

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Answer:

Explanation:

Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues. Cancer is caused by changes to DNA. Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes.

Cancer is caused by a variety of factors, including genetic mutations, exposure to certain substances and environmental factors, and viral or bacterial infections. These factors can cause changes in the DNA of cells, leading to uncontrolled cell growth and the development of a tumor. The exact cause of cancer in any given individual can be difficult to determine, as it often involves a complex combination of factors.

Monggo seed, also known as mung bean, is a small, round, green legume that is native to the Indian subcontinent. It is widely used in traditional Chinese and Ayurvedic medicine and has been a staple of South Asian and Southeast Asian cuisines for centuries.

Monggo seeds are a rich source of B-complex vitamins, dietary fiber, minerals, and antioxidants. They are also a good source of protein and contain complex carbohydrates, which can help to provide sustained energy throughout the day.

Monggo seeds are also a good source of calcium, iron, magnesium, copper, phosphorus, and potassium. Monggo seeds can be used in a variety of ways. They can be sprouted and eaten raw or cooked in soups, stir-fries, curries, salads, and even desserts. The seeds can also be boiled and mashed into a paste to make a variety of dishes, including dal and mung bean cakes. The sprouted seeds can be added to salads or used as a garnish.

Monggo seeds are also used to make a variety of medicinal products, such as herbal teas and ointments.

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Arteriosclerosis is a particular kind of Atherosclerosis however the phrases are frequently used interchangeably. Atherosclerosis is an accumulation of fat, cholesterol, and other materials on the inner walls of your arteries.

When arteries constrict and harden, they become so weak that they are unable to perform their primary role of transporting blood throughout the body. This condition is known as arteriosclerosis. Blood flow to your organs may be hampered by this artery constriction.

Even while atherosclerosis is frequently associated with heart issues, it can impact arteries throughout the body. You can get atherosclerosis cured. Atherosclerosis can be prevented with healthy lifestyle choices.

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Answer:

Activation of amino acids

Transfer of amino acids to tRNA

Initiation of a polypeptide chain

Chain Termination

Protein translocation

The most common type of substitution mutation is the missense mutation, in which the substitution leads to a different codon being formed than the original.

A genetic modification in which a single base pair substitution alters the genetic code to produce an amino acid that differs from the normal amino acid at that position. Some missense variants (or mutations) alter protein function.

A missense mutation is an error in DNA in which an unwanted amino acid is incorporated into a protein by changing a single nucleotide within the DNA. The best example of a missense change is pallor, known as sickle cell anemia. Missense mutations can affect DNA transcription factors and alter the expression of the corresponding proteins. Altering the expression of wild-type proteins in compartments designed to function can disrupt the normal cell cycle and cause disease.

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Based on the projections of the cell body, neurons are divided into three.

a. Neurons that would activate to a muscle are Multipolar neurons.

b. Neurons that are rare, found in the retina of the eye and the olfactory mucosa, typically involved in the special senses of sight and smell, and never myelinated are Bipolar neurons.

c. Neurons which are found in a reflex arc are Unipolar neurons.

Neurons are the smallest and functional units that make up the nervous system, whose function is to transmit stimuli from receptors to the central nervous system and to transmit stimuli from the central nervous system to muscles and glands.

The structure of the neuron consists of:

1. Soma or cell body that receives impulses from dendrites to the axon. The soma consists of the cytoplasm, nucleus, and other cell organelles such as mitochondria, Golgi bodies, and neurofibrils.

2. Dendrites, which are short and branched. Dendrites function to receive impulses from other neurons and pass them on to the soma.

3. Axon, which is long and single-branched. At the end of it, there is a bag filled with neurotransmitters that will convey impulses from the soma.

4. Myelin sheath that covers the axon and allows nerve impulses to be transmitted more quickly along the axon

Based on the projections of the cell, neurons are divided into three:

1. Unipolar neurons: neurons that have one protoplasmic process on the soma (one structure extending from the soma). Examples: neurons in the Peripheral Nervous System.

2. Bipolar neurons: neurons that have two processes extending from the soma. Examples: neurons in the retina of the eye and the olfactory system.

3. Multipolar neurons: neurons that have one axon and many dendrites in the soma. Most human neurons are multipolar neurons.

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The method through which cells produce proteins is called protein synthesis. Transcription and translation are the two steps that take place. The conversion of DNA's genetic code into mRNA in the nucleus is known as transcription. Initiation, elongation, and termination are the three processes that make up this process.

The chains of amino acids that make up proteins fold into distinctive three-dimensional structures. Proteins' ultimate folded shapes are well-suited for their tasks because of the bonds that help stabilize their structure within the protein molecules.

Transcription is the initial stage of the production of proteins. Messenger RNA, or mRNA, is produced from DNA through the process of transcription. The DNA code, which is located in the nucleus of the cell, is used to create the mRNA.

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Answer: This sticky material, known as honeydew, is excreted by certain insects when they feed on plants.

Explanation: The secretions of zillions of aphids that are eating on the unfortunate tree. The aphids emit a sticky and odorous fluid called honeydew as they suck out the tree's juices.

Ants are drawn to the tasty gummy material and 'farm' or 'milk' the aphids for their honeydew by stroking the aphid's abdomen.

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The four primary sources of biological contamination are the environment, humans, animals, and food production processes. It is important to understand these sources in order to ensure that food is safe and free from contamination.

Biological contamination is the presence of unwanted, potentially hazardous, and pathogenic microorganisms in a food or water supply. There are four primary sources of biological contamination: the environment, humans, animals, and food production processes.

The environment is a major source of contamination. Microorganisms can originate from air, soil, and water. These microorganisms can be spread to food through contact with these sources or through the use of contaminated materials such as equipment, water, and other materials used in food processing.

Humans are a major source of biological contamination. This is because humans are known to carry different kinds of microorganisms on their bodies, such as in their hands, nose, and mouth. These microorganisms can be transferred to food through direct contact or through indirect contact such as through improper cleaning and sanitation practices.

Animals are also a major source of biological contamination. Animals can harbor different kinds of microorganisms, which can then be transferred to food when they come in contact with it. This is especially true for animals raised for food production, such as cows, chickens, and pigs.

Lastly, food production processes can also be a source of contamination. Poor sanitation and storage practices can lead to the presence of microorganisms in the food supply. Additionally, improper handling and processing of food can lead to contamination by bacteria, viruses, and parasites.

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In a neuron with a large diameter, myelinated axon Signal conduction will be faster as compared to a neuron with a small diameter, unmyelinated axon.

Neurons are information transmitters. They send information between the brain's various regions as well as between brain and the rest of the nervous system using electric signals and chemical signals which is termed as Signal conduction

The axon is responsible for Signal conduction from the cell body to other neurons. Many neurons are shielded in the same way that electrical wire is. They are protected by the insulation, which enables their signals to travel quickly along the axon. Signals from the brain may never meet muscle groups in the limbs if it is not present.

Nerve Signal conduction is an electrochemical reaction, which means it involves the use of electricity generated by chemical molecules. In other words, electrons do not flow through a domestic electrical wire to produce electricity in the brain.

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Answer:

d. lysosomes

Explanation:

Lysosomes aid with digestion by breaking down a variety of polymers like proteins, nucleic acids, and carbs. Hence, they can break down several foods that enter the digestive system, regardless of how big these food remains are.

AA (homozygous dominant for dry earwax), aa (homozygous recessive for wet earwax), Aa (heterozygous for dry and wet earwax), 11-3: AA (homozygous dominant for dry earwax), 1-2: aa (homozygous recessive for wet earwax) and III-1: Aa (heterozygous for dry and wet earwax)

Based on the information provided, the genotypes of the individuals in the pedigree are as follows:

It is important to note that the genotypes listed above are based on the assumption that the inheritance pattern for the ABCC11 gene follows simple Mendelian inheritance. If the inheritance pattern is more complex, the genotypes may not be accurately predicted using this method.

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Answer:

Desert plants are subjected to high temperatures and scarcity of water. To prevent the loss of water through transpiration or evaporation desert plants have leaf modified into spines and the epidermis is covered with a thick waxy coating

A virus's physical makeup a capsid, a protective protein coating. a DNA or RNA nucleic acid genome hidden inside the capsid. The envelope is a membrane layer.

Simple virions are made up of two fundamental parts: a nucleic acid (single- or double-stranded RNA or DNA) and a protein shell called a capsid that serves as a shell to protect the viral genome from nucleases and which, during infection, binds the virion to specific receptors exposed on the potential host cell.

The following traits are shared by all viruses: they are tiny, have DNA or RNA genomes, and are unavoidable intracellular parasites.

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There are several stages in the life cycle of g. lamblia. The correct sequence of the following statement is 5,3,6,1,4,2.

Giardia lamblia is the first known divergent eukaryotic lineage. Although it is a real eukaryotic cell, it has some 'prokaryotic characteristics,' such as the absence of mitochondria and peroxisomes, prokaryotic-size SSU rRNA, and bacterial-like metabolic enzymes.

is more different from yeast than yeast is from man in evolutionary terms, therefore parts that are preserved from Giardia to man are likely to reflect universal eukaryotic cell activities.

Giardia lamblia is a flagellated protozoan parasite that lives in the upper small intestine of vertebrates. The full life cycle, which may be completed in vitro, is straightforward, with trophozoites cycling between a vegetative form and a more resistant cystic form. The parasite is one of the oldest known divergent eukaryotes, with over 95% of its genome sequenced.

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