Restriction enzymes cut dna only at specific sites. therefore, they are not useful for making recombinant molecules.
a. True
b. False

Answer:

What is this supposed to be bottom text

Explanation: plz help

Catecholamines and peptides are hydrophilic substances that cannot enter a target cell. As a result, they bind to cell surface receptors.

Since the steroid hormones are fat soluble and hydrophobic, transport proteins must bind to and move them (like albumin and globulins which are blood proteins produced by the liver). Hormones that are free (unbound) can go inside target organs.

On the cell surface are water-soluble hormone receptors. The majority of lipid-soluble hormone receptors are found inside the cell. A cell's receptors can be up- or down-regulated to affect how responsive that cell is to hormones.

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The three layers of the ureter's wall are the inner mucosa layer, the middle muscular layer, and the outer Adventitia layer. Muscular waves help propel urine through the ureters to the urinary bladder, where it passes through a flaplike valve in the mucous membrane.

Inner Mucosa: The innermost layer is the mucosa, which is composed of transitional epithelium. This layer lines the inside of the ureter and helps prevent urine from leaking back into the kidneys.

Middle Muscular Layer: The middle layer is the muscular layer, consisting of smooth muscle fibers. These muscles contract in wave-like motions (peristalsis) to propel urine from the kidneys to the urinary bladder.

Outer Adventitia: The outermost layer is the adventitia, which is a fibrous connective tissue layer. It provides structural support and protection to the ureter.

As urine reaches the urinary bladder, it passes through a flap-like valve called the ureterovesical valve, which is located in the mucous membrane of the bladder. This valve prevents urine from flowing back up into the ureters and kidneys.

Urine: Normal urine consists of 95% water and 5% dissolved substances, including urea, uric acid, various electrolytes (like sodium, potassium, and chloride), and small amounts of glucose and amino acids.
Ureter: The ureters are muscular tubes extending from the kidneys to the base of the urinary bladder.

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Answer:

the atmosphere

Explanation:

the plants take CO2 in the air through tiny pores in their leaves called stomata

The digestion of Amoeba and Ruminants is similar to each other. The digestive system of Amoeba is very simple. It includes only one opening mouth, but Ruminants have a more complex digestive system. It includes four compartments stomach. In this post, we'll be discussing the similarities between the digestion of Amoeba and Ruminants.

The following are some similarities between the digestion of Amoeba and Ruminants: Both have a digestive system: Amoeba and Ruminants have a digestive system. Amoeba's digestive system is a single opening mouth, but Ruminants have a more complex digestive system with four compartments stomach. Extracellular digestion:

Amoeba and Ruminants both undergo extracellular digestion. It's a process in which food is digested outside of the cell. Both have enzymes for digestion: Both Amoeba and Ruminants have enzymes to break down food. Ruminants secrete digestive enzymes in the stomach while Amoeba secretes digestive enzymes in its pseudopodia.

The absorption of nutrients: Both Amoeba and Ruminants absorb nutrients through their cell membrane. Amoeba absorbs nutrients through the pseudopodia, and Ruminants absorb nutrients through the small intestine. The breakdown of carbohydrates:

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Answer:

With a capital letter.

Explanation:

Dominant traits are represented with capital letters like "HH" while recessive are represented with lowercase , "hh."

Answer:

templates

Explanation:

Answer:

In dna replication, the strands on the original molecule are used as templates for the synthesis of new dna strands.

Explanation:

There isn't much explaining on this one.

but basically just remember that at the end of DNA replication you will end up with 2 DNA molecules, one is the original template DNA strand and the other one is the new DNA strand.

Therefore, they would need an original DNA strand to replicate off of, and that is what we call the template DNA strand.

Answer:

C

Explanation:

Natural Selection can cause micro evolution, or a change in allele frequency over time

An allele becomes more common in a population. So, the correct option is (C).

Allele frequency is also known as gene frequency. It is defined as the relative frequency of an allele at a particular locus in a population, expressed as a fraction or percentage. It is the fraction of all chromosomes in the population that carry that allele over the total population or sample size.

It forms the basis of many population and medical genetic studies. Many evolutionary forces change allele frequencies where allele frequencies can be used to trace past evolutionary events.

Allele Frequency is expressed as:

\(1 = p^2 + 2pq + q^2\)

p and q each represent the allele frequency of different alleles.

Thus, an allele becomes more common in a population. So, the correct option is (C).

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When it comes to studying proteins using NMR experiments, the most commonly used nucleus is the hydrogen nucleus (or proton) which has a spin of 1/2 and is abundant in biological molecules.

The majority of the information about protein structure and dynamics is obtained by measuring the chemical shifts of the individual proton resonances in the protein backbone and side chains. However, other nuclei such as carbon-13, nitrogen-15, and oxygen-17 can also be used in NMR experiments to obtain additional structural and dynamic information.

Ultimately, the choice of the specific nucleus used in NMR experiments for studying proteins will depend on the research question being addressed and the desired level of structural and dynamic information needed.
In the case of proteins, the most commonly used nucleus for NMR (Nuclear Magnetic Resonance) experiments is the hydrogen nucleus (proton, ¹H). This is due to its high natural abundance, sensitivity, and ease of interpretation in NMR spectroscopy.

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Answer:

(D) Nucleic Acids is the answer

Answer:

Hi, there the answer is thymine

Hope this helps :)

Explanation:

The one way that our atmosphere does NOT protect and incubate life on Earth is by blocking high-energy electromagnetic radiation from hitting Earth's surface.

The Earth's atmosphere provides a layer of protection that helps to maintain life on the planet. It protects the Earth from the harmful rays of the sun, keeps it from being hit by meteoroids, and regulates the temperature of the planet. However, one way that our atmosphere does not protect and incubate life on Earth is by blocking high-energy electromagnetic radiation from hitting Earth's surface.

Atmosphere provides a magnetic field, a substantial surface pressure, and blocks very energetic massive particles from hitting Earth's surface. The magnetic field created by the Earth's core is what protects us from the harmful solar wind. This wind is made up of charged particles that would otherwise strip away our atmosphere. Without the atmosphere's substantial surface pressure, liquid water could not exist on the planet's surface.

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Answer:

Well The Most important characteristics of living things Include: movement, feeding, development, breathing, reproduction, sensitivity and excretion

Explanation:

Answer:

1 Nutrition. Living things take in materials from their surroundings that they use for growth or to provide energy

2 Respiration

3 Movement

4 Excretion

5 Growth

6 Reproduction

7 Sensitivity

Explanation:

Answer:

1. Scientific question: Can detergent affect flower growth?

2. IV: The soap used in the study  

3. DV: Flower growth  

Explanation:

A scientific question is a well-sustained question about a given phenomenon of the real world which can be answered by experimental and/or observational procedures. A good scientific question must be testable and lead to falsifiable hypotheses. The dependent variable is the variable that is being measured in the experiment, (i.e. it is being affected by the experimental procedure). On the other hand, the independent variable is the variable that isn't changed by the other variables that are being measured in the experiment.

Answer: the pioneer species

Explanation:

Answer:

The answer is pioneer species.

Explanation:

Answer:

4: the earth is tilted at a 23.5° so the north and south sides of the earth face the sun as the earth revolves around the sun. For example, in winter the northern side is facing away from the sun (getting the least direct sunlight) although in the summer the north side of the earth faces the sun giving it more direct sunlight.

5. Summer solstice, Autom equinox, winter solstice, The Spring equinox. You can find the dates on google for these if you search them up.

3. The earths path around the sun is elliptical (not perfect circle) and the rate of revoltion changes in speed when closest and farthest from the sun

Srry thats all i know. Hope this helps

Explanation:

Genetic material is the substance needed to meet the following criteria: ability to contain the information necessary to construct an entire organism; ability to be passed from parents to offspring; ability to be replicated; contains variation.

Three criteria are required for the genetic material to perform its function. There are three of them: information, variation, and replication.

The fundamental requirements for genetic material (the material that determines an organism's inherited characteristics): It must be stable, capable of being expressed when needed, accurate in replication, and unchanged from parent to progeny.

The DNA double helix's stability is primarily determined by two factors: base pairing between complementary strands and stacking between adjacent bases.

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The percentage of cells that were killed by the first chemotherapy dose and the percentage of cells that survived and grew back before the second dose.

The first dose killed \((109 - 750,000)/109 = 99.999%\) of the cells.

The second dose was given after the tumor grew to 800,000 cells, so it grew back by \((800,000 - 750,000)/750,000 = 0.0667\) or 6.67%.

Therefore, we can expect the next chemotherapy dose to kill approximately 93.33% of the remaining cells.

So, the estimated number of cells remaining after the next dose of chemotherapy would be \(800,000 * (1 - 0.9333) = 53,333.\)

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Answer: Parasitism

Explanation:

You didn't give the options and I couldn't get them online but based on the information given, the relationship is parasitism.

Parasitism is a refered to as a symbiotic relationship that exists between organisms such one organism, which is known as the parasite, either lives on the other organism which is called the host or lives inside it and causes the host harm.

In this case, the parasite benefits at the expense of the host. Examples of parasites include tick, fleas and tapeworms.

With regards to the question, the tapeworm causes people harm and benefits at the expense of its host.

Answer:

Parasitism

Explanation:

The relationship between the humans and the tapeworms is parasitism because the tapeworms are getting food, but the human is losing nutrients in the process.

The autopsy would likely show partially digested food in the victim's stomach if the suspect is telling the truth.

When we eat a meal, our body begins the process of digestion, breaking down the food into smaller particles. The partially digested food travels from the stomach to the intestines for further digestion and absorption of nutrients. If the suspect's claim is true and they had a large dinner with the victim three hours before the victim's death, the autopsy would reveal the presence of partially digested food in the victim's stomach. This finding would support the suspect's statement and suggest that they had indeed shared a meal together before the unfortunate event occurred.

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The relationship between natural selection and beneficial traits is best described by beneficial traits that allow an organism to be better suited to its environment (Option C).

Nаturаl selection is а mechаnism of evolution. Orgаnisms thаt аre more аdаpted to their environment аre more likely to survive аnd pаss on the genes thаt аided their success. This process cаuses species to chаnge аnd diverge over time.

In nаturаl selection, genetic mutаtions thаt аre beneficiаl to аn individuаl's survivаl аre pаssed on through reproduction. This results in а new generаtion of orgаnisms thаt аre more likely to survive to reproduce.

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Answer:

A. point b

Explanation:

The photic zone also is the same naming for euphotic zone, epipelagic zone, or sunlit zone. They all mean the same thing. It is defined as the uppermost layer of a body of water that receives sunlight allowing photosynthesis.

Cells, tissues, organs

Answer:

Cell, Tissue, Organ

Explanation:

Sickle cell anemia has been traced to a point mutation.

Sickle cell anemia is a genetic condition that affects the hemoglobin molecules, a protein found in red blood cells. It is characterized by abnormally shaped, rigid, and sticky red blood cells that can block the flow of blood through tiny blood vessels. This blockage can lead to tissue and organ damage, severe pain, and a decreased life expectancy. Sickle cell anemia is caused by a point mutation that alters a single nucleotide in the hemoglobin gene. This nucleotide is responsible for the production of glutamic acid, an amino acid present in normal hemoglobin. In sickle cell anemia, this nucleotide is replaced by adenine, leading to the production of an abnormal hemoglobin called hemoglobin S. This abnormal hemoglobin causes the red blood cells to deform into a sickle shape, which can block the flow of blood through the vessels.

Thus, this condition is caused by a point mutation, a change in a single nucleotide in the DNA sequence of the gene.

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The birth rate for the species of lobsters is not given in the question. Given:Predicted carrying capacity:

898,000Current population:

768,000Death rate:

2 per yearWe can use the logistic growth equation to find the answer.

Let P be the number of lobsters at a time t, and carrying capacity K. The logistic growth model can be represented by:

\(dP/dt = r P (1 - P/K)\)where r is the growth rate.The logistic growth model can be used to find the predicted population, P, of a species at time t.

This is given by:

\(P(t) = (K * P(0) * e^(rt)) / (K + P(0) * (e^(rt) - 1))\)

where P(0) is the initial population at time t = 0.Substituting the given values in the equation,

\(P(t) = (898,000 * 768,000 * e^(r*1)) / (898,000 + 768,000 * (e^(r*1) - 1))\)

After solving the equation, the value of r is found to be approximately 0.1682.

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Answer:

it is the second one

Explanation:

remember that photosystem II is always before photosystem I.

During linear electron flow the electrons flow from PS II to PS I, releasing energy that is used to generate ATP. Therefore, option (B) is correct.

Protein complexes involved in photosynthesis include structural and functional components called photosystems. Together, they perform the basic photochemistry of photosynthesis, which entails the transfer of energy and electrons as well as the absorption of light.

Water splitting, oxygen evolution, and plastoquinone reduction are all carried out by the multi-component pigment-protein complex known as photosystem II (PSII).

Photosystem I takes electrons from plastocyanin or cytochrome c6 on the lumenal side of the thylakoid membrane and utilises light energy to transmit them across the membrane to ferredoxin on the stromal side. It may also work as a channel for cyclic electron transport.

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The term "pylorus" means "gatekeeper." The correct option is d).

The pylorus is a specific anatomical structure located at the lower end of the stomach, where it connects to the beginning of the small intestine, known as the duodenum. The term "pylorus" is derived from the Greek word "pýlōros," which translates to "gatekeeper" in English.

The function of the pylorus is to regulate the flow of partially digested food, called chyme, from the stomach into the small intestine. It acts as a muscular valve, controlling the passage of food and ensuring that the stomach empties at an appropriate rate. The pylorus contracts and relaxes to allow small amounts of chyme to enter the duodenum for further digestion and absorption.

The term "pylorus" is commonly used in medical and anatomical contexts to refer to this specific region of the digestive system. It emphasizes the role of the pylorus as a gatekeeper or gate-like structure that controls the movement of food between the stomach and the small intestine, contributing to the overall digestive process. Option d) is the correct one.

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