For a cell to be considered living it must have which characteristics

C. The law of superposition and radioactive dating are the methods for measuring the age of Earth and its parts use absolute dating.

By analyzing the radioactive decay of isotopes or the effects of radiation on the crystal structure of minerals, absolute radiocarbon dating measure the amount of time since rocks first formed. Radiocarbon dating of wood or bones, potassium-argon dating, and trapped-charge dating methods like thermoluminescence dating of glazed pottery are instances of absolute dating procedures.

According to the principle of superposition in geology, the order of layers seen in sedimentary rocks reveals when the layers were deposited. According to the definition of the law of superposition, the lowest layer is the oldest layer of deposition, and the layers above it are incrementally younger layers of deposition.

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Constructing housing. The correct option is A

Building and constructing residences or other sorts of structures meant for human habitation is referred to as housing constructing. Depending on the geography and the resources available, several materials and techniques might be used for building homes.

Building homes can fulfill a basic human survival requirement for shelter and protection from the elements. Group dynamics can also facilitate the sharing of information and assets needed for house construction, such as building methods and materials.

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The number of hydrogen ions present in 45 mL of concentrated sulphuric acid solution is 4.97 × 10²³ ions.

To calculate the number of hydrogen ions in the acid, we have to calculate the number of moles as follows:

Density = mass ÷ volume

According to this question, concentrated sulphuric acid with molar mass of 98.12 g.mol¹ has a density of 1.5 g/cm³ and is 60% H₂SO4 per mass.

Mass = 1.5g/cm³ × 45cm³ = 67.5grams.

Moles = mass ÷ molar mass

moles = 67.5g ÷ 98.12g/mol = 0.687 moles

If 60% of this quantity contains the acid, then 60/100 × 0.687 = 0.413 moles of acid is present.

There are 2 moles of H+ in sulphiric acid, hence, the no of ions can be calculated as follows:

no of ions = 2 × 0.413 × 6.02 × 10²³ = 4.97 × 10²³ ions.

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A gene can be described as being made up of DNA and it contains the instructions which are required for the building of the proteins.

The correct option is option C.

Genes are basically considered as the the functional units of heredity as they are basically composed of DNA, which is the nucleic acid responsible of the transmission of information from one generation to the other generation.

The chromosomes which are present in our body are basically made up of DNA which contain a number of genes. Each of the gene basically comprises of certain set of instructions which are required in order to perform a particular function or codes for some proteins.

Hence, the correct option is option C.

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The various tissues in the digestive system such as the mucosa, submucosa, serosa epithelium, etc, all function together in the digestion of food.

The digestive system is a complex physiological system responsible for the breakdown and absorption of food, as well as the elimination of waste materials from the body.

It includes a series of organs and structures that work together to process food and extract nutrients for energy, growth, and repair.

The primary organs of the digestive system include the mouth, esophagus, stomach, small intestine, large intestine (colon), rectum, and anus.

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Answer:

D

Explanation:

:0

Answer:

An optical microscope is often one of the central devices in a life-science research lab. It can be used for various applications which shed light on many scientific questions. Thereby the configuration and features of the

One of the first things to consider when selecting a research microscope is the type of specimen you want to explore. For fixed samples mounted on a thin glass slide, you can use an upright microscope. Living cells demand special characteristics of the microscope because they are kept in relatively large cell culture vessels filled with cell culture media.

Explanation:

I hope this was what you were looking for and I hope it helps!

Answer:

Charles Darwin proposed the theory of natural selection.

The one that would happen to keep the population growth of cheetahs in 1 death, 5 births, 3 immigration, and 7 emigrations. The correct option is d.

The study of data such as births, deaths, wealth, or illness incidence that show the changing structure of human populations and the composition of a specific human population.

The components evaluated in a person's or a population's ecological footprint are food consumption, energy usage, transportation usage, and the amount of rubbish, including whether it has been recycled. I hope these are the answers and that they are useful.

The rate of the population of cheetahs as compared to the previous years is good. There is only one death and the birth rate is high.

Therefore, the correct option is d, 1 death, 5 births, 3 immigration, 7 emigrations.

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The metric system is a system of measurement that is utilized throughout the world. The fundamental units of the metric system are meter, gram, and liter. In this system, prefixes are used to represent measurements that are bigger or smaller than the fundamental units.

The prefix “kilo-,” for example, indicates a measurement that is a thousand times bigger than the fundamental unit. Lab Intro - The Metric System Exercise A - Measurement or Distance The metric system is used to measure length or distance.

The standard unit of length in the metric system is the meter, which is represented by the symbol “m.” The metric system is used to measure distances or lengths that vary from millimeters (mm) to kilometers (km).In order to determine measurements in the metric system, the fundamental units are combined with prefixes.

For example, one centimeter (cm) is equal to 1/100th of a meter, while one millimeter (mm) is equal to 1/1000th of a meter. One kilometer (km), on the other hand, is equal to a thousand meters (m).

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Answer:

CRYSTAL SPRING COLLEGE will give you a great explanation located at Lekki - ibeju in eputu

Answer: got this from google... How does the flu kill? The short and morbid answer is that in most cases the body kills itself by trying to heal itself. “Dying from the flu is not like dying from a bullet or a black widow spider bite,” says Amesh Adalja, an infectious disease physician at the Johns Hopkins University Center for Health Security. Hope this helps... Plz mark me brainliest if i answered the question right.. Stay safe and have a great day!!! :D

Answer:

Explanation:

Hope this helped!

The 6 adaptations of camel are : long legs, drinks large amount of water, excrete less urine,hump stores fat,padded feet and long eyelashes.

1. Camel have lengthy legs to keep your body out of the hot sand.

2. Camel consumes a lot of water when it is available and then stores it in its body.

3. Camel have much less urine in their excretions, and their dung is dry. None of them perspire. A camel can go for several days without drinking water since it loses very little water.

4. A camel's hump is where fat is stored. The hump functions as a fat or energy reserve in times of need.

5. The camel has padded feet, which are big and flat and make it easier for it to move around on the sand. The padded feet prevent it from sinking into the sand in opposition to the weight of its own body and the load it is carrying.

6. Camel have long eyelashes and hairs to shield their eyes and ears from flying dust particles.

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Photosynthesis:

Inputs Outputs

Number of C atoms 6

Number of H atoms 12

Number of O atoms 18

Energy-carrying molecules Light energy

Cellular respiration:

Inputs Outputs

Number of C atoms 6

Number of H atoms 12

Number of O atoms 6

Energy-carrying molecules Adenosine triphosphate (ATP)

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Prokaryotic cells: cell wall, cell membrane, nucleus, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.

Eukaryotic cells: cell wall, cell membrane, nucleus, mitochondria, membrane-bound organelles, central vacuole, made of cells, can obtain energy, grow and reproduce, DNA, and RNA.

Viruses: capsid, requires host cell, may cause disease, antibiotics may be used to treat infection, vaccines are used to prevent infection, living thing, DNA, and RNA.

Viruses are small infectious particles that propagate solely inside living cells of other organisms. Their structure comprises genetic material bound by a protein coat called a capsid, with some viruses displaying an additional lipid envelope surrounding the capsid.

Since viruses cannot self-reproduce, host cells are crucial to their replication and production.

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Answer:

a. 15000

b. 1500

c. 150

Explanation:

Each organism passes on only 10% of their energy to the next one.

Answer:

plantea

Explanation:

I'm not sure if that's correct

Q- Discuss the transfer of biomass when one organism eats another. Use your knowledge of digestion to discuss how food is broken down and used by the consumer.

ANSWER IN ATTACHMENT

Q- What Happens To The Energy That Does Not Transfer To The Next Level?

ANSWER- The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat

Q- Explain why there are typically fewer organisms at the top of an energy pyramid

ANSWER- The number of organisms at each level decreases relative to the level below because there is less energy available to support those organisms. The top level of an energy pyramid has the fewest organisms because it has the least amount of energy

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~Its srishty~✿

The transfer of matter and energy occurs from producers to primary consumers to secondary consumers. b) It is lost as heat.  c) Because the top of an energy pyramid has the least energy d) If 10,000 energy units are available at the producer’s level only 1000 units are available at the consumer level.

The primary producers use the sun's energy to produce food which is eaten up by primary consumers which are again eaten by secondary consumers. In this way, there is a flow of energy in the ecosystem.

Digestion is the physical and chemical process of breaking down food into smaller, easier-to-digest molecules.

b) As the energy travels from one trophic level to the next, only 10% of the energy is transferred while the rest 90% of the energy is lost as heat.

c) The reason why there are fewer organisms at the apex of an energy pyramid is due to energy transfer and the principles of thermodynamics. However, as energy is transferred, some energy is lost. The 10% rule states that only approximately 10% of energy available at a trophic level passes to the next level.

d) To illustrate this, let’s look at a simple example using simple numbers. Suppose we have 10,000 energy units available at the producer’s level (the plants). Primary consumers (the plants) can only consume about 10% of this energy, so they’d have 1,000 energy units.

When primary consumers (the carnivores) consume the plants, they’ll only be able to consume about 10% more energy, resulting in 100 energy units. Tertiary consumers (the top carnivores) feeding on the secondary consumers would only get around 10 units of energy.

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Answer/Explanation:

Given==> short tail allele (T) is dominant, and long tail allele (t) is recessive.

Genotype of homozygous short-tailed dog = TT, while genotype of heterozygous short-tailed dog = TT

Required==> Punnett Square showing a genetic cross between both parents: i.e. TT X Tt

*See attached image for the Punnett Square

From the Punnett Square, 50% of the offspring of the First generation would be homozygous short-tailed, while 50% would be heterozygous short-tailed.

All the offspring would be all short-tailed as well.

The resting phase of the cell cycle is called interphase.

Interphase is a critical stage in the cell cycle during which the cell prepares for division by going through different activities such as growth, DNA replication, and protein and organelle production. It is the longest phase of the cell cycle and is separated into three subphases: G1 (Gap 1), S (Synthesis), and G2 (Gap 2).

The cell develops in size, synthesises RNA and proteins, and performs its regular duties during the G1 phase. The cell enters the S phase after passing through the G1 checkpoint. The DNA of the cell is reproduced during the S phase, resulting in the production of two identical copies of each chromosome.

This ensures that during cell division, each daughter cell receives a complete set of genetic material. The cell enters the G2 phase after DNA replication, where it continues to expand and prepares for mitosis.

Interphase is not a real resting phase because the cell is actively engaged in multiple cellular functions. However, because the cell is not visibly dividing at this period, it is commonly referred to as the resting phase.

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Under optimal conditions the number of DNA molecules amplified from a single molecule in a PCR after 30 amplification cycles will be (d) 2^30.

The sample is heated so that the DNA denatures, or splits into two pieces of single-stranded DNA, prior to utilizing PCR to amplify a section of DNA. Also,  "Taq polymerase" , an enzyme makes two new DNA strands using the old and previous strands as templates for help. The outcome of this process is the duplication of the original DNA, with one old and one new strand of DNA present in each of the new molecules.

After then, each of these strands may be used to make two other copies, and so on. More than one billion precise duplicates of the original DNA segment are produced when the cycle of denaturing and synthesizing new DNA is repeated up to 30 or 40 times.

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Answer:

Question 1: true! Question 2: true! Question 3: false

Explanation:

this might not sound like much, but I LOVE science! however i'm not 100 percent sure on question 2.

Answer:

3' - ATTCATGGC -5'

Explanation:

Those are the complementary amino acids.

Explanation:

Honestly only know a few, but that's just the first four, although this may not be much hope it helps you out a bit.

A muscular organ about the size of your first.

Located behind and slightly left of your breastbone.

Pumps blood through a network of arteries, veins, and capillaries.

Call the cardiovascular system.

The specific properties of the most desired organic semiconductors for solar panel technology may evolve as advancements are made in the field.

In the context of solar panel technology, the most desired type of organic semiconductors would typically possess the following characteristics:

High Efficiency: The organic semiconductors should have a high power conversion efficiency, meaning they can efficiently convert sunlight into electricity. This is crucial for maximizing the electricity output of solar panels.

Tunable Bandgap: Organic semiconductors with a tunable bandgap would be advantageous. The bandgap determines the range of light wavelengths that can be absorbed by the material. A tunable bandgap allows for optimization to match the solar spectrum, enabling better absorption of sunlight and improved overall efficiency.

Long Operational Lifetime: The organic semiconductors should be stable and exhibit a long operational lifetime. Solar panels are expected to endure outdoor conditions for many years, so the materials used should be resistant to degradation, such as from exposure to UV radiation or moisture.

Scalability and Low Cost: Manufacturers aim to produce organic semiconductors on a large scale at a low cost. Therefore, desirable organic semiconductors should be readily synthesized using cost-effective methods and be compatible with high-volume manufacturing processes.

Environmental Friendliness: Organic semiconductors that are environmentally friendly and have low toxicity are desirable. This is aligned with the goal of sustainable and clean energy technologies.

It is important to note that the field of organic semiconductor research is still evolving, and scientists are continually working to improve the performance and characteristics of these materials.

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The correct ones are:

T cells of the lymphocyte type. T cells are white blood cells in the immune system that play an important role in the adaptive immune response. T cells are distinguished from other lymphocytes by the presence of a T-cell receptor on their surface.

T cells are formed from hematopoietic stem cells found in bone marrow. T cells that are maturing migrate to the thymus gland. T cells get their name from the thymus. The precursor cells differentiate into various types of T cells after migrating to the thymus. Even after they leave the thymus, T cells continue to differentiate.

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Approximately, there are four molecules of ATP are produced by substrate-level phosphorylation during the complete oxidation of a molecule of glucose (C6H12O6) in aerobic cellular respiration.

Cellular respiration may be defined as a type of biological process that significantly involves the breakdown of food in the cell with the liberation of energy.

In a more simple sense, it is a process of transforming glucose into a form of energy that is known as ATP which is utilized by cells in order to accomplish metabolic and cellular activities.

Two molecules of glyceraldehyde-3-phosphate are formed from one molecule of glucose. Each molecule of G-3-P is responsible for the formation of 2 ATP during the process of substrate-level-phosphorylation.

Hence, a total of four ATPs are produced via the reaction that is known as substrate-level phosphorylation.

Therefore, the number of ATPs that are produced by substrate-level phosphorylation during the complete oxidation of a molecule of glucose is four.

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The following are:

1. TRUE. Viruses are not considered to be alive because they do not have their own metabolism and they cannot reproduce on their own. However, they do have some of the characteristics of living things, such as the ability to evolve and to interact with their environment.

2. TRUE. Pasteurization is a method of heating milk and other food stuffs to a specific temperature for a set period of time, followed by rapid cooling. This kills harmful bacteria without affecting the taste or nutritional value of the food.

3. TRUE. White blood cells (lymphocytes) are a type of immune cell that produces antibodies. Antibodies are proteins that bind to specific antigens, which are molecules that are foreign to the body. This binding helps to protect the body from infection.

4. TRUE. A species is a group of organisms that can breed successfully with one other to produce fertile offspring. This means that the offspring will be able to reproduce themselves.

5. FALSE. Tuberculosis is caused by a bacterium called Mycobacterium tuberculosis. Salmonella typhi is a bacterium that causes typhoid fever.

6. TRUE. In the scientific naming of organisms, the first name is the genus name. The genus name is followed by the species name. For example, the scientific name for humans is Homo sapiens.

7. FALSE. Gymnosperm plants are a group of plants that have seeds that are not enclosed in an ovary. They are considered to be higher plants, along with angiosperms (flowering plants).

8. TRUE. Sunlight is the primary source of energy for all plants. Plants use sunlight to convert carbon dioxide and water into glucose, which is a sugar that they use for energy.

9. TRUE. Autotrophs are organisms that can synthesize their own energy from the raw materials. They are able to do this through a process called photosynthesis.

10. TRUE. The major organic substances in living organisms are carbohydrate, lipid, and protein. Carbohydrates are used for energy, lipids are used for storing energy, and proteins are used for building and repairing cells.

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