A student assigned to cataloging some forgotten fossil specimens finds a fossil with the following features: cartilaginous skeleton, paired fins, placoid scales and 7 gill slits. He rushes to his advisor claiming he has found an ancestral tetrapod. How does his advisor respond? His advisor chides him for a faulty identification because ray-finned fishes are not ancestral to tetrapods. His advisor praises him for a great discovery because the fossil has features of an ancestral tetrapod. His advisor chides him because the fossil is a chondrichthyan, which could not be a tetrapod ancestor His advisor praises him for the discovery of a new agnathan His advisor sugests there is not enough evidence for the student's claim and asks him to collect more information

Answer: see explanation

Explanation:

A. substrate

B. Active site

C. Enzyme binds with substrate

D. Active site of enzyme

E. Products leaving active site

Simplified enzymatic reaction. The substrate reversibly binds to the active site of the enzyme, forming the enzyme-substrate (ES) complex. The bound substrate is converted to product by catalytic groups in the active site, forming the enzyme-product complex (EP). The bound products are released, returning the enzyme to its unbound form, ready to catalyze another round of converting substrate to product.

Genetically engineered bacteria used to synthesize drugs and chemicals belong to Human Uses of Prokaryotes.

What are Prokaryotes?

Prokaryotes are single-celled organisms that lack a true nucleus and membrane-bound organelles. They are one of the two main categories of living organisms, the other being eukaryotes.

Prokaryotic cells are generally smaller and simpler in structure than eukaryotic cells. They typically have a cell wall, cell membrane, and cytoplasm containing ribosomes and genetic material (DNA or RNA). In addition, many prokaryotes have structures called pili and flagella that allow them to move and interact with their environment.

Prokaryotes are incredibly diverse and can be found in almost every habitat on Earth. They play a crucial role in many ecological processes, such as nutrient cycling, nitrogen fixation, and decomposition. Some prokaryotes are also important pathogens that can cause disease in humans, animals, and plants.

The two main types of prokaryotes are bacteria and archaea. While they share many similarities, they also have important differences in their genetic material, cell structure, and metabolic processes.

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Tetrodotoxin (TTX) and botulinum toxin (BTX) are two neurotoxins that cause paralysis. The underlying mechanisms are given below:a) Both block the voltage-gated Na+ channels to inhibit the firing of action potentials.

Both tetrodotoxin (TTX) and botulinum toxin (BTX) block voltage-gated Na+ channels to inhibit the firing of action potentials, which results in paralysis. Tetrodotoxin (TTX) is a potent neurotoxin that is found in pufferfish, whereas botulinum toxin (BTX) is produced by the bacteria Clostridium botulinum.

Both neurotoxins inhibit the release of neuro transmitters from nerve endings in muscles. TTX inhibits the release of acetylcholine (ACh) by blocking voltage-gated Na+ channels in the axons of nerve cells that supply the muscles. Botulinum toxin (BTX) prevents the release of ACh from nerve endings by blocking the docking of vesicles containing ACh with the plasma membrane of the nerve ending. As a result, muscle contraction is prevented, leading to paralysis.

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Answer: i would say  false

Explanation: hope this helps

Answer:

What is B  amino acids

By biuret test

Explanation:

A Biuret is a compound formed by heating urea to 180° C. When biuret is treated with dilute copper sulfate in alkaline condition, a purple colored compound is formed. This is the basis of biuret test widely used for identification of proteins and amino acids.

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Fat which has been digested is packaged in protein- and phosphorus-containing lipoproteins which travel in your lymph to your bloodstream. The lipoproteins that transport digested fat from the lymph to the bloodstream are called chylomicrons.

Chylomicrons are large lipoprotein particles that are formed in the small intestine after the absorption of dietary fats. They are composed of a core of triglycerides (fats), surrounded by a shell of proteins, phospholipids, and cholesterol. Chylomicrons are released into the lymphatic system and eventually enter the bloodstream, where they deliver dietary fats to various tissues throughout the body.

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The human phenotypic traits that are shaped by multiple genes working together and are influenced by environmental factors are referred to as polygenic traits. Polygenic traits are traits that are influenced by more than one gene and are also affected by environmental factors. Polygenic traits include skin color, eye color, height, weight, and many other traits in humans.

Humans are complex organisms, and their phenotypic traits are the result of a complex interplay between genetics and the environment. Polygenic traits are influenced by a large number of genes, each of which contributes to the trait in a small way. Each gene works in concert with other genes, as well as with environmental factors, to shape the final phenotype.

Polygenic traits are often difficult to study because they are influenced by multiple genes and environmental factors. They can also be influenced by epigenetic modifications, which can affect gene expression without altering the DNA sequence. Despite these challenges, researchers continue to study polygenic traits to gain a better understanding of the complex interplay between genes and the environment.

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The genotype TT stands for the homozygous state, in which both alleles of a gene are present in a homologous pair. Alleles are various variations of a single gene.

If an organism possesses 2 versions of the same allele for a gene, it is said to be homozygous. An organism might be homozygous recessive (RR) or homozygous dominant (TT) (tt). A heterozygous creature is one that has two different alleles (Tt) for the same gene.

The presence of two identical alleles at a specific gene locus is referred to as the homozygous condition. A homozygous genotype can have two alleles with the same variance or two normal alleles.

A person is considered to be homozygous if they have two equal copies of a particular gene. A genotype with heterozygosity, on the other hand, possesses distinct alleles.

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Answer:

list of three devices are 1st phone 2nd doorbell 3rd alarm clock

Explanation:

if these devices will not produce sound then we can not do our work properly these are very useful for everyday life

Joint hypermobility refers to a person's joints having an extremely wide range of motion in some or all of them. People who are hypermobile are especially flexible and can move their limbs into postures that most people would find impossible.

Many persons with joint hypermobility experience tightness in sizable muscle-tendon groups while having flexible ligaments. Stretching is frequently advised in order to increase muscular flexibility since tight muscles can lead to joint and tendon discomfort. The joint will eventually start "hunting" for feedback all the time in order to get the stability it so desperately needs. This frequently results in extremely tight (hypertonic) muscles and gives the person a sense of stiffness.The majority of persons with hypermobility experience no discomfort or other health problems. However, some persons have joint discomfort, ligament damage, weariness, gastrointestinal problems, and other symptoms as a result of their hypermobility. The condition of joint hypermobility is particularly prevalent in children and adolescents.

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Answer:

Generation 1 has fewer purple flowers than generation 3 is correct

Explanation:

Finished the test with 100

Use of steam is the integral part of process in most power plants. In geothermal power plants, thermal energy (heat) from Earth is converted to electricity.

Geothermal power plants are used to generate electricity using Earth's thermal energy.

The process requires following steps.

Thus, it can be concluded as thermal energy is converted to electricity at geothermal power plants.

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Answer:

Explanation:

Leaves cannot perform photosynthesis without chlorophyll. Some plants have variegated leaves, with patterns of white and green. In these plants only the green parts of the leaf can photosynthesize, because the white parts have no chlorophyll.

i hope it's help

Answer:

covalent bond.

Explanation:

These building blocks are made of three parts:a phosphate group,a sugar group and one of four types of nitrogen bases.to form a strand of DNA , nucleotides are linked into chains, with the phosphate and sugar groups alternating.

I hope this helps!

Answer The Golgi Body

Explanation:

The answer is the Golgi Apparatus because it gets nutrients from the Endoplasmic Reticulum, their packages modify and then send the proteins to the lysosomes. It is not Mitocondria because that organelle only creates glucose which the cell intakes.

The given content refers to a spreadsheet scenario where the formula "=SUM(B4:F4)" is located in cell G4, and this formula is copied down the entire "total" column.

The purpose of this formula is to calculate the sum of the values in cells B4 to F4. When the formula is copied down the column, it adjusts its cell references accordingly. For example, if the formula is copied to cell G5, it will automatically become "=SUM(B5:F5)", calculating the sum of the values in cells B5 to F5, and so on.

Now, if you delete the values in the range B4 to F10, it will affect the formulas in the total column in the following way:

1. Formulas in rows 4 to 10: Since the values in the range B4 to F10 have been deleted, the formulas in these rows will return a result of 0 or an empty value since there are no longer any values to sum.

2. Formulas below row 10: If you continue to copy the formula down the column beyond row 10, the formulas in those rows will also reference the deleted range B4 to F10, resulting in 0 or empty values as there are no values to sum.

In summary, deleting the values in the range B4 to F10 will cause the formulas in the total column to return 0 or empty values since the referenced cells are now empty.

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Answer:

Explanation:

An overseas business partner is coming to your school for a meeting with your Principal. This partner has never met your Principal and has never been to the city or your school. Please write a sample meeting confirmation email you would send them. You can include all the information that you believe they need to have a pleasant stay. What would you add if your Principal instructed you to go the extra mile for their arrangements?

Unicellular organisms are living things made up of only one cell. For example, bacteria and yeast are unicellular. Multicellular organism are made up of more than one cell. Some examples of a multicellular organisms are humans and animals.

Answer: you need to have control over your blood glucos concentration, body temperature, and water levels to maintain homeostasis.

Given what we know, we can confirm that when reading an ECG, the ventricular depolarization will be depicted as the QRS complex.

In an ECG, each wave or group of waves represents a different aspect of the heartbeat. The values are as follows:

Therefore, we can confirm that when reading an ECG, the ventricular depolarization will be represented by the QRS complex.

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Answer:

c

Explanation:

whenever the inflamitory response occurs it kinda heats up the body temp and kills the bacteria, kind of like when you wash your hands with hot water.

a) Release of histamine increases blood flow, which brings an influx of white blood cells.

The inflammatory response is a complex process that occurs in response to infection or tissue damage. It is one of the body's ways of protecting itself from harm and promoting healing.

One of the key components of the inflammatory response is the release of histamine and other chemical mediators, such as cytokines and prostaglandins. These chemicals help to dilate blood vessels, which increases blood flow to the affected area. This brings an influx of white blood cells, such as neutrophils and macrophages, which help to fight off the infection by consuming and destroying the invading microorganisms.

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The seemingly crazy word Environmental marine biologist is the actual name for scientists who study the behaviors and habitats and other factors that influence the reproduction and well-being of sea (water) creatures.

What Is a Marine Biologist?

Marine biologists research marine organisms and occasionally the oceans themselves. They may look into the physiological processes, illnesses, and environmental factors affecting marine creatures, as well as their behavior. They could evaluate how human actions affect marine life. Numerous marine biologists also have positions as zoologists, fish and wildlife biologists, fisheries biologists, aquatic biologists, conservation biologists, and biological technicians.They could evaluate how human actions affect marine life.

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Answer:

if u can list it then list it :/

Explanation:

Environmental factors help cells and organisms mutate to get better results and less deaths in an ecosystem

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(D) "A trip to the arid Dead Sea region, where your historian colleagues have found a storeroom of wax-sealed jars." is the research expedition should you join in order to retrieve some ancient but viable seeds.

The Dead Sea Scrolls were initially found in 1947 by Bedouin shepherds at Qumran in a lonely maze of caves. The Bedouin found several antique clay jars that had been wax-sealed. They still remain shrouded in mystery and contain biblical and other religious writings that were copied more than 2000 years ago and therefore is accurate to the carbon dating that seeds dormant for up to 2000 years can successfully germinate.

Between 1947 and 1956, the texts were found in 11 caves adjacent to Qumran. Few well-preserved scrolls, which typically only survive in fragments, were discovered in cylindrical jars, but many other neighboring caves yielded identical jars and lids without scrolls.

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Question correction:

Scientists have confirmed by carbon dating that seeds dormant for up to 2000 years can successfully germinate. Based on the requirements for germination, what research expedition should you join in order to retrieve some ancient but viable seeds?

A. A trip to Indonesia, where the civet cat eats and expels coffee beans, producing a gourmet coffee known as Kopi Luwak.

B. A trip to the Irish marsh, where wet peat creates anaerobic conditions, and your colleagues hope to unearth a bog mummy.

C. A trip to the Burgess Shale in Canada, where your paleontologist colleagues have found fossils from the Cambrian era.

D. A trip to the arid Dead Sea region, where your historian colleagues have found a storeroom of wax-sealed jars