define the underlined words. severe, sustained muscle contractions may develop in hypoparathyroidism.

The physical or chemical changes that occur are as follows:

Physical changes are changes that are easily reversible and in which no new substances are formed.

Physical changes involve:

Examples of physical changes include

evaporation of water, dissolution of sugar in water.

Chemical change are changes that are not easily reversible and in which new substances are formed.

Chemical changes involve:

Examples of chemical changes are rotting of wood, rusting of iron.

In conclusion, changes that new products are formed are chemical changes whereas changes that does not form new products are physical changes.

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Answer:

Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane.

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The primary physical, biological drive to find and eat food, that is mostly regulated by internal cues to eating is called hunger. The hunger drive is influenced by numerous factors, including hormonal, physiological, and psychological processes.

To satiate the hunger, the brain is prompted to consume food that it perceives as satisfying and to drink liquids as a part of homeostatic mechanism.

Most people are aware of the concept of hunger, but many are unaware of the biological mechanisms that control this drive. Hunger is influenced by a variety of factors, including psychological, physiological, and hormonal processes.

The hunger drive prompts the brain to consume food that is perceived as satisfying and to drink liquids as a part of homeostatic mechanism.There are a number of hormones that regulate hunger. Ghrelin is one such hormone that is released by the stomach when it is empty, signaling to the brain that it is time to eat.

Another hormone, leptin, is released by fat cells and signals to the brain that the body has enough energy stores and can stop eating. In addition, many psychological factors can influence hunger, including stress, mood, and environmental cues. Hunger is a complex process that involves multiple biological and environmental factors.

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Answer:

Personality

Explanation:

Personality is what makes up your traits, how you speak, how act, how you make decisions, how you go about your actions, etc.

You can also refer to the dictionary definition of personality:

"The combination of characteristics or qualities that form an individual's distinctive character."

Answer:

What is the purpose of seedling?

A seedling is a young sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed. A typical young seedling consists of three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves).

The benefits of planting seedlings?

Gives you a 'kick start' into the season. May save up to 6 weeks of growing time. Allows you to grow only what you need thus minimising wastage. Can be difficult to obtain organic vegetable seedlings or unusual varieties.

What is the importance of a Seedbox in nursing seedlings?

Garden seed boxes, also called trays or flats, offer growers the opportunity to start a large number of seeds in one container. This option saves space and allows the grower to easily move the seedlings from one place to another.

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The patterns of inheritance best explain the transmission of the trait is Autosomal dominant. Thus the option D is correct.

The term refers the genetic characteristics of the disease that lies in the chromosome. The dominant means the single copy of the disease that is linked by mutations and causes the disease.

They include disease like Huntington's disease, neurofibromatosis, and polycystic kidney disease.The pedigree in the figure shows the transmission of a trait in a particular family. Based on this pattern of transmission, the trait is most likely.

Therefore, The patterns of inheritance best explain the transmission of the trait is Autosomal dominant. Thus the option D is correct.

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A repressible operon is a type of operon in which gene expression is normally active but can be repressed or inhibited in the presence of a specific molecule. This type of operon is commonly found in bacterial cells and is involved in the regulation of metabolic pathways.

In a repressible operon, a repressor protein binds to the operator region of the operon, preventing the transcription of the genes. However, in the presence of a specific molecule, called a corepressor, the repressor protein is able to bind to the operator, inhibiting gene expression. An example of a repressible operon is the trp operon, which is involved in the biosynthesis of the amino acid tryptophan. When tryptophan levels are high, the trp repressor binds to the operator, preventing the transcription of the genes required for tryptophan synthesis.

In summary, a repressible operon is a type of operon that is normally active but can be inhibited in the presence of a specific molecule. It plays an important role in the regulation of metabolic pathways in bacterial cells.

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Answer:

1. Genetic drift

2. Natural selection

3. Adaption

4. Mutation

Explanation:

I'm not entirely sure that this is all correct, but for 2. Natural selection makes sense, and for the foxes that is adaption. I'm unsure about the first question though.

Hope this helps you a bit. Good luck on your studies.

Answer:

Rolls

Explanation:

I took the test.

Answer:

Carnivore - Animals

Herbivore - Plants

Parasite - Live Host

Omnivore - Plants/Animals

Filter Feeder - Filter small organisms from water

Detrivore - Decay Plant/Animal Material

Explanation:

Feeder groups are categories of organisms based on their primary source of food. The most common feeder groups are: carnivores, herbivores, omnivores, insectivores, frugivores, granivores, nectarivores, planktivores, and detritivores. Carnivores feed primarily on animal tissue, herbivores feed primarily on plants, and omnivores feed on both animal and plant tissue. Insectivores feed primarily on insects, frugivores feed primarily on fruits, granivores feed primarily on grains, nectarivores feed primarily on nectar, and planktivores filter small organisms from water. Detritivores feed primarily on decaying plant or animal material. Some organisms, such as parasites, feed on a live host organism. It is important to understand these feeder groups and their associated diets in order to better understand the ecological roles and relationships of different organisms in their ecosystems.

The diagram shows the splitting of water molecules using light energy (A).

The light reactions of photosynthesis are a series of chemical reactions that use light energy to convert water and carbon dioxide into oxygen and energy-rich molecules. The first step in the light reactions is the splitting of water molecules using light energy. This process is called photolysis. Photolysis occurs in the thylakoid membranes of chloroplasts, which are the organelles where photosynthesis takes place.

The diagram shows a photosystem, which is a complex of proteins and pigments that capture light energy and use it to drive the splitting of water molecules. The water molecules are split into hydrogen ions, electrons, and oxygen gas.

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The percentage of solar energy incorporated into gross primary production varies depending on environmental factors but can range from 1% to 3%. Net primary production typically represents about 10% of the energy incorporated into gross primary production.

Gross primary production (GPP) is the total amount of solar energy that is captured and converted into chemical energy through photosynthesis by plants in an ecosystem. However, not all of this energy is retained and stored as biomass due to metabolic processes and respiration. The percentage of solar energy incorporated into GPP can vary depending on factors such as plant efficiency, temperature, and nutrient availability, but it typically ranges from 1% to 3%.

Net primary production (NPP) represents the energy that remains after subtracting the energy lost through respiration during plant metabolism. NPP is the energy available for plant growth and provides the foundation for the rest of the food chain. On average, NPP is about 10% of the energy incorporated into GPP.

Therefore, approximately 1% to 3% of solar energy is incorporated into gross primary production, and net primary production typically represents about 10% of the energy incorporated into GPP.

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Answer: if new investigations occur, new questions would have to be asked to find out the things that are being researched.

Explanation:

The first image shows an organism with radial symmetry. The second image shows an organism with bilateral symmetry.

Radial symmetry is very common in organisms with jellyfish, starfish and sea urchins, as the bodies of these organisms are organized around a central axis allowing any plane passing through the center to divide the body into equal parts.

Bilateral symmetry is common in insects, humans, butterflies and fish, for example.

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In protein synthesis, RNA combines with protein to make the enzymatic structure to assemble the protein.

In protein synthesis, RNA has the codons, or codes for the actual amino acid sequence. In protein synthesis, RNA carries the amino acid. The best explanation for Saxitoxin (STX) would be that it acts by blocking voltage-gated sodium channels which are needed to generate an action potential.

Organic molecules, derived from vitamins, that function to enhance the action of an enzyme are called coenzymes. If something like steroids or gasses move directly into the cell by crossing directly through the cell membrane it is called Simple diffusion.

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Mechanisms of CYP450 inhibition can be categorized into reversible inhibition and mechanism-based inhibition.

Reversible inhibition occurs when a drug binds reversibly to the enzyme, temporarily blocking its activity. This can be competitive or non-competitive inhibition. Mechanism-based inhibition, also known as irreversible or time-dependent inhibition, involves the formation of a metabolite that covalently binds to the enzyme, resulting in long-lasting or irreversible inhibition.

Mechanism-based inhibition can be caused by the formation of reactive intermediates or the inactivation of the enzyme through metabolic activation. Understanding these mechanisms is crucial in clinical practice to predict and manage potential drug-drug interactions, optimize dosing regimens, and ensure the safety and efficacy of pharmacotherapy.

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If all of the normal GTP in cells were replaced with a chemical variant of GTP that cannot be hydrolyzed to GDP, it would have a significant impact on the cytoskeleton.

The cytoskeleton is a dynamic network of protein filaments that provides structural support, maintains cell shape, and facilitates cell movement and intracellular transport. GTP hydrolysis plays a crucial role in regulating the activity and dynamics of cytoskeletal proteins, particularly those associated with microtubules and actin filaments.

In the case of microtubules, GTP-bound tubulin molecules polymerize to form the microtubule structure. Hydrolysis of GTP to GDP by tubulin subunits is essential for stabilizing the microtubules. It allows the microtubules to undergo dynamic instability, which involves cycles of growth and shrinkage. This dynamic behavior is crucial for processes such as cell division, intracellular transport, and the maintenance of cell shape. If GTP hydrolysis is blocked, the microtubules would remain in a persistent state of growth without undergoing depolymerization, resulting in abnormal microtubule dynamics and potential disruption of cellular functions dependent on microtubules.

Similarly, actin filaments, another component of the cytoskeleton, are regulated by GTP-binding proteins such as Rho family GTPases. GTP hydrolysis is involved in the control of actin filament assembly, disassembly, and rearrangement. Blocking GTP hydrolysis would likely disrupt the dynamic behavior of actin filaments, affecting processes such as cell motility, cell division, and maintenance of cell shape.

Therefore, if the normal GTP in cells is replaced with a GTP variant that cannot be hydrolyzed to GDP, it would likely lead to abnormal cytoskeletal dynamics, impairing cell functions dependent on the cytoskeleton.

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Answer:

The plasma membrane is a thin layer of lipid molecules that surrounds the cell and separates the inside from the outside. The fluid mosaic model describes the structure of the plasma membrane as a two-layered structure of phospholipids with embedded proteins. This model explains how the structure of the plasma membrane allows it to act as a selective barrier, regulating the movement of substances in and out of the cell.

Structure S in the plasma membrane is represented by the phospholipids, which form a lipid bilayer with hydrophilic heads facing outwards and hydrophobic tails facing inwards. The hydrophilic heads are in contact with the extracellular fluid and intracellular fluid while the hydrophobic tails are in the middle of the membrane. The phospholipid bilayer provides a barrier that separates the inside and outside of the cell, restricting the movement of hydrophilic and large molecules through the membrane while allowing the passage of small and hydrophobic molecules.

Structure T represents the integral membrane proteins that are embedded in the lipid bilayer. These proteins have different functions, such as transport of molecules, cell signaling, and catalyzing chemical reactions. The proteins also contribute to the selective permeability of the membrane by regulating the movement of specific molecules in and out of the cell. For example, channels and carrier proteins regulate the movement of ions and larger molecules through the membrane while receptor proteins receive signals from the outside of the cell and relay them to the inside of the cell.

In summary, the plasma membrane is mainly composed of phospholipids and proteins according to the fluid mosaic model. The phospholipids form a lipid bilayer that acts as a barrier, while the proteins embedded in the bilayer regulate the selective permeability of the membrane by facilitating the movement of specific molecules in and out of the cell.

Explanation:

Answer:

GILLLS

Explanation:

Answer:

Shut it down lol

Explanation:

lol

Answer: The rest of the chain would die.

Explanation: the food chain all depend on each other so if one chain falls the rest fall like a domino effect.

Answer:

To verify you have a pure sample use the sterile needle to isolate and grow on a new streak plate to make sure you see only one culture.

Explanation:

Answer:

Insertion, frame shift mutation

Explanation:

There has been an extra C inserted at 3 causing the entire sequence to shift back one

Answer:

what test are going to be carried out

Because all of your cells in your body started off as single cells. That single cell then divided into multiple other cells. So it breaks down so it can help the entire body equally. In order for a cell to work 1,000 of these proteins need to be created.

Answer: False

Explanation: Nucleic acids are not the main source of energy for living things. The main source of energy for living things is carbohydrates, specifically glucose. Nucleic acids, such as DNA and RNA, play important roles in storing and transmitting genetic information.

Answer:

Lactic acid is a common fermentation product in bacteria and animal cells. It is produced after glycolysis when Pyruvate is reduced by electrons received from NADH.

The mutation that results in the repeating of a section of DNA is a Duplication.

A mutation is a change in the DNA sequence of a cell's genetic material. Mutations can be caused by errors during DNA replication, exposure to environmental factors such as radiation or chemicals, or by mutations in specific genes that regulate DNA replication or repair.

Mutations can range in size from a single base pair to a large segment of a chromosome, and can have a variety of effects on an organism, ranging from having no effect to causing a genetic disorder. Some mutations can also be beneficial, providing an organism with new traits or abilities that can increase its chances of survival in a changing environment.

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