Some effort has been made to extract DNA from fossilized dinosaur bones that have been buried for many millions of years in arid climates. In what form is this DNA most likely to be found? A) A
B) B
C) Z
D) Tetraplex
E) Completely denatured

If the pH is higher than desired, adjust it using a hydrochloric acid solution.

Thus, if you need the solution to read the pH as 8.0 which is lower than 9.5, add HCl solution to it.

pH stands for potential of H+ ions, i.e the amount of Hydrogen ions in a solution.

pH is measured on a scale of 0-14, 7 is the neutral point. pH range below 7 is acidic and higher than 7 is basic.

pH is calculated from the formula-

pH= -log10[H+]

We can also measure the Ph levels by a pH meter. It is used for accuracy, reproducibility and continuous measurement. The values are measured in mV and then converted to pH values.

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2. asexual reproduction

3. different eyecolors in brothers and sisters of the same parents

4a. random means that it is by chance and not determined by science or mathematics.

4b. Mutation is the changing of certain genes over time as being passed down. Similar to evolution.

4c. Genetic mutations are random because according to the punnet square of different traits sometimes it can be 50/50% which trait you inherit.

5. Natural selection is when you may inherit both traits but only one shows due to the fact that one trait is dominant while the other is reccesive.

6. Dominant and reccessive traits determine this. For example brown eyes and dark hair tend to be dominant while blue eyes and blonde hair are recessive. If you have a parent with blue eyes and a parent with brown eyes you will most likely also have brown eyes.

7. the ones that are best fit to the enviorment

Answer:

Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. ... This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.

I hope it's helpful!

Answer:

Believe it or not mammals like seals and pinnipeds otters and polar bears can but underwater animals hear very poorly

Explanation:

Answer:

It could grow at such an extrem erate that it could use up all natural resources that the native species needs to survive. thus breeding out all native species and becoming a invasive species. The native species the animals eat now does not exist and the animals that needed that food will decrease drastically in populus.

Explanation:

Answer:

D. I and II only

Explanation:

Answer:biome

Explanation:

Because biome means where they are from

Answer:

C

I think it's correct unless any objections

The three pieces of evidence indicate that tissue B is malignant and proliferating rapidly.

Three pieces of evidence that suggest tissue B is cancerous are:

Further investigation, such as genetic analysis or imaging techniques, would be necessary to confirm a cancer diagnosis and determine appropriate treatment options.

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Answer:

availability of resources.

Explanation:

Availability of resources is abiotic factor which is responsible for the decrease in population in 1990 because when the population reaches its carrying capacity so the organisms compete with each other and due to limited resources such as food etc the decrease occurs in population. Infection is also occurs when there is high population due to which death occurs and population of organism decreases.

The bottleneck capacity in this scenario is 10 candidates per hour. This means that even if the other activities (A and B) can process candidates at a faster rate, the overall process will be limited by the capacity of Activity C.

The term "bottleneck" refers to a point in a process where the flow of activity is constrained, causing a slowdown or inefficiency. In this context, the question asks about the bottleneck capacity in candidates per hour.

To determine the bottleneck capacity, we need to consider the activity that has the slowest rate of completion or the longest time per candidate. Let's say we have three activities: A, B, and C, each taking a different amount of time to complete one candidate.

Activity A takes 5 minutes per candidate, Activity B takes 4 minutes per candidate, and Activity C takes 6 minutes per candidate.

To find the bottleneck capacity, we need to identify the activity that takes the longest time per candidate. In this case, it is Activity C, which takes 6 minutes per candidate.

Now, we can calculate the bottleneck capacity in candidates per hour. Since there are 60 minutes in an hour, we can divide 60 minutes by the time per candidate for the bottleneck activity:

60 minutes / 6 minutes per candidate = 10 candidates per hour



It's important to note that the bottleneck capacity can vary depending on the specific activities and their respective time per candidate. In this case, we used the given times for Activities A, B, and C as an example.

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When the particles of an iron block vibrate faster that means the iron block is heated. When it is heated the temperature of the particles increases and the thermal energy also increases.

When an object is heated,  the particles of the heated substance start to move faster. This generates heat which is the thermal energy. Therefore thermal energy is produced when there is a rise in the temperature of the substance.

Thermal energy is the energy produced due to the movement of particles of an object. An object having fast-moving particles has high thermal energy. Thermal energy can also be used as a power source. It is used in thermal power plants.

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Answer:

can you post a picture of your worksheets?

Explanation:

A single molecule of pyruvate will generate 15 ATP molecules.

Pyruvate is an important chemical constituent according to biochemical science. It is the molecule that is produced from glycolysis, a process by which energy is derived from glucose. The carboxylate group of pyruvate is removed as carbon dioxide. The synthesized acetyl group is stimulated through its association with Coenzyme-A, thus, producing Acetyl Coenzyme-A.

The TCA cycle generates 15 ATP molecules through oxidation of Acetyl Co-A. Through oxidative decarboxylation as well as Krebs cycle, a single molecule of pyruvate (containing 3 Carbon atoms) gives rise to 4 molecules of NADH, a single molecule of FADH2 as well as one molecule of ATP.

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Answer:

gametic isolation

Explanation:

Answer: A

Explanation:

Answer:

Key points

Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive.

The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems.

The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.

The survival of the organism depends on the integrated activity of all the organ systems, often coordinated by the endocrine and nervous systems.

Introduction

If you were a single-celled organism and you lived in a nutrient-rich place, staying alive would be pretty straightforward. For instance, if you were an amoeba living in a pond, you could absorb nutrients straight from your environment. The oxygen you would need for metabolism could diffuse in across your cell membrane, and carbon dioxide and other wastes could diffuse out. When the time came to reproduce, you could just divide yourself in two!

However, odds are you are not an amoeba—given that you're using Khan Academy right now—and things aren’t quite so simple for big, many-celled organisms like human beings. Your complex body has over 30 trillion cells, and most of those cells aren’t in direct contact with the external environment.^1

1

start superscript, 1, end superscript A cell deep inside your body—in one of your bones, say, or in your liver—can’t get the nutrients or oxygen it needs directly from the environment.

How, then, does the body nourish its cells and keep itself running? Let's take a closer look at how the organization of your amazing body makes this possible.

Multicellular organisms need specialized systems

Most cells in large multicellular organisms don't directly exchange substances like nutrients and wastes with the external environment, instead, they are surrounded by an internal environment of extracellular fluid—literally, fluid outside of cells. The cells get oxygen and nutrients from this extracellular fluid and release waste products into it. Humans and other complex organisms have specialized systems that maintain the internal environment, keeping it steady and able to provide for the needs of the cells.

Different systems of the body carry out different functions. For example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system—is responsible for taking up oxygen and getting rid of carbon dioxide. The muscular and skeletal systems are crucial for movement; the reproductive system handles reproduction; and the excretory system gets rid of metabolic waste.

Because of their specialization, these different systems are dependent on each other. The cells that make up the digestive, muscular, skeletal, reproductive, and excretory systems all need oxygen from the respiratory system to function, and the cells of the respiratory system—as well as all the other systems—need nutrients and must get rid of metabolic wastes. All the systems of the body work together to keep an organism up and running.

The density of a substance is calculated by dividing its mass by its volume. In this case, the mass of the other liquid is given as 47.70 grams and the volume of the test tube is given as 30 milliliters.

To find the density, we divide the mass by the volume: Density = Mass / Volume Density = 47.70 g / 30 mL However, to get a consistent unit for density, we need to convert milliliters to grams since density is commonly expressed in grams per milliliter. Assuming the density of water is 1 g/mL, we can use this conversion factor: Density = 47.70 g / (30 mL) x (1 g / 1 mL) Simplifying: Density = 47.70 g / 30 g Density ≈ 1.59 g/mL Therefore, the density of the other liquid is approximately 1.59 grams per milliliter.

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The monosaccharides among the given options are glucose, fructose, and sucrose.

Among the options provided, the monosaccharides are glucose, fructose, and sucrose. Monosaccharides are single sugar molecules that cannot be further broken down into simpler sugars. They are the building blocks of more complex carbohydrates.

Lactose, another option given, is a disaccharide composed of glucose and galactose, not a monosaccharide. Cellulose is a complex carbohydrate known as a polysaccharide and is not a monosaccharide.

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Answer:

Terminal moraines are found at the terminus or the furthest (end) point reached by a glacier. Lateral moraines are found deposited along the sides of the glacier. Medial moraines are found at the junction between two glaciers.

Answer:

nature saved us

Explanation:

Answer:

Many familiar species belong to the phylum Arthropods—insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water. Arthropods are considered the most successful animals on Earth.

Explanation:

But the answer is spiders

Answer:

Its B and C.

Explanation:

Almost all animals belong in the Phylum Arthropoda.

Some axon terminals contain more than one type of neurotransmitter, which is known as co-localization of neurotransmitters. The differential release of neurotransmitters is accomplished through several mechanisms.

One mechanism is the segregation of neurotransmitters into different vesicles within the axon terminal. Each type of neurotransmitter is stored in separate vesicles and released independently, allowing for the selective release of specific neurotransmitters.

Another mechanism is the regulation of neurotransmitter release by different signaling pathways. Each type of neurotransmitter can be regulated by distinct signaling cascades, which can be activated or inhibited in response to specific stimuli. This allows for the differential release of neurotransmitters depending on the specific conditions or signals received by the neuron.

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Answer:

Harmful

Explanation:

When you have an autoimmune disorder, your immune system does not distinguish between healthy tissue and potentially harmful antigens.

Answer:

Oxygen

Explanation:

Answer:

food like glycogen is first hydrolysed to glucose molecules then the bonds are broken to release energy called catabolism the energy from bonds broken is stored as ATP which can be used by body this process is called Respiration,

Explanation:

Answer:

Well, all DNA contains phosphorus, and lacks sulfur, whereas protein contains sulfur but no phosphorus. Only one sample had only radioactive DNA while the other only contained radioactive protein.