Towards the end of erythropoiesis in the bone marrow, a red blood cell loses its nucleus and becomes a.

Answer:

4. Three ways in which ocean water varies are salinity, temperature, and pressure.

5. The temperature of ocean water varies with the location and seasons.

6. Water temperature decreases as you move from the surface towards the ocean floor. This is because sunlight warms the surface water, but deeper water is much colder.

7. Scuba divers are prevented from going deeper than 40 meters below the surface due to the increased pressure at greater depths, which can be dangerous without proper training and equipment.

8. Ocean floor features such as trenches and mid-ocean ridges form through tectonic plate movements. When plates collide or separate, they can cause the ocean floor to be pushed up or down, creating these features. Trenches, for example, are formed when one tectonic plate is forced underneath another plate, causing a deep depression in the ocean floor. Mid-ocean ridges, on the other hand, are formed when plates move apart, allowing magma to rise to the surface and create new ocean floor.

Answer:

Question 1 - false

Question 2 - true

Question 3 - true

Question 4 - false

Question 5 - false

Question 6 - false

Question 7 - false

Question 8 - true

Question 9 - true

Question 10 - false

Question 11 - false

Question - false

Question 12 - true

Question 13 - false

Question 14 - true

Answer:

1) All living cells have the same organelles.

false

2) Plant cell walls are primarily made of sugar.

true

3) The environment can cause the shape of a protein to change.

true

4) Turgor pressure is a result of a central vacuole being low or nearly empty of water.

false

5) Mitochondria make sugar for animal cells.

false

6) The space between organelles in a cell is just water

false

7) Proteins are what allow cells to move

true

8) Catalysts are polysaccharide enzymes.

false

9) Of the 5 nucleotides used in RNA and DNA, only one (A) is used for energy transport in the cell.

false

10) Changing the shape of the active site of an enzyme will probably allow it to catalyze more reactions.

false

11) Denaturing a protein makes it permanently unusable by breaking peptide bonds.

false

12) Hydrogen bonds are responsible for the common secondary structures in protein folding.

true

13) Water is an organic molecule.

false

14) Sugars are organic molecules

true

Explanation:

Just took the test!

Gene expression is the process by which genetic information flows from DNA to RNA to produce proteins.

The first step is transcription, where a DNA template is used to create a complementary RNA copy. The mRNA then undergoes splicing and travels to the cytoplasm, where translation occurs. Ribosomes translate the mRNA into a specific sequence of amino acids, which are joined together to form a protein. The final protein product is then folded into its functional form and can participate in cellular processes. Overall, gene expression is a complex and tightly regulated process that is essential for life.

At several stages, including transcriptional regulation, post-transcriptional regulation, translational regulation, and post-translational regulation, gene expression can be controlled.The most prevalent method of controlling gene expression is transcriptional regulation, which includes regulating the rate at which a gene is transcribed. This control is achieved via the activation or inhibition of transcription by the binding of transcription factors to the gene's promoter region.

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The statement which is true about Genetic drift is that it can decrease genetic diversity in a population. Thus, the correct option for this question is A.

Genetic drift may be defined as a type of evolutionary force that significantly involves the mechanism of evolution in which the allele frequency of a population may change over generations due to chance or sampling error.

The process of genetic drift occurs in all populations of non-finite size but its effects are strongest in the smallest populations. It is considered an assumption under the Hardy-Weinberg equilibrium. So, option C is eliminated.

The concept of the founder effect and genetic bottleneck always decreases the genetic diversity among the population. So, option D is eliminated.

Therefore, it can decrease genetic diversity in a population is that statement that is true about Genetic drift. Thus, the correct option for this question is A.

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Early vertebrates, which lived over 500 million years ago, differed from modern vertebrates in several ways. One key characteristic was their lack of jaws. Early vertebrates had simple mouths with no bones or teeth for biting.

Chewing, whereas modern vertebrates have evolved complex jaw structures that allow for more efficient feeding. Another difference is that early vertebrates lacked paired fins, which modern fish and other aquatic vertebrates use for swimming and maneuvering. Early vertebrates also lacked a bony skeleton, relying instead on a notochord for support. Over time, this notochord evolved into the backbone that characterizes modern vertebrates. Additionally, early vertebrates likely had a more primitive circulatory system compared to modern vertebrates, which have evolved more efficient systems for delivering oxygen and nutrients throughout the body.

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Explanation:

it is possible through mutation ,by changing a genes instruction for making protein ..

mutation can cause the protein to malfunction or missing entirely , when a mutation alters protein that plays a critical role ,it affect the normal functioning of the body

The classification of animals based on body temperature regulation gives C. Warm-blooded and cold-blooded.

Warm-bloodedness and cold-bloodedness are phrases employed to differentiate between creatures predicated upon their capability to manage their body heat.

Endothermic animals, or warm-blooded organisms, are capable of steadfastly keeping a constant core temperature regardless of the external atmospheric conditions.

In conclusion, classification of animals in terms of their body temperature regulation would lead to such classifications as animals being Warm-blooded and cold-blooded.

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The question is:

Which of the following options refers to animals that are classified based on their body temperature regulation?

Answer:

The volume of fish tank is 12 liters.

The volume of the fish tank is  12 Litres.

Volume of the fish tank is lengh×width×height  

                                          ⇒50cm×12cm×20cm

                                           ⇒  12000 cm³

1 cm³=1 ml

12000 cm³= 12000ml

1000 ml= 1 Litre

1 ml = 1/1000 Litres

∴ 12000 ml = (1/1000)×12000

          ⇒ 12 Litres

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ANSWER:

a.) 4, 205 stickers

b.) 1, 521 stickers

Answer:

Acids are compounds that dissociate (break) into hydrogen (H+) ions and another compound when placed in an aqueous solution. ... If one of the ions is OH-, the solution is basic. An example of a strong base is sodium hydroxide (NaOH).

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According to the research, in photosynthesis, through the light-dependent reactions energy is contained in the NADPH and ATP molecules that is used by light-independent reactions.

It is the process that converts solar energy into chemical energy which, stored in cells, allows the formation of carbohydrates and other organic molecules.

In this sense, the light-dependent reactions occur in the thylakoids whose chemical energy is comprised of molecules of two types NADPH and ATP.

On the other hand, light-independent reactions occur in the chloroplast matrix with the intervention of enzymes that intervene in the reduction of CO2 molecules to establish carbohydrates through the energy sources ATP and NADPH.

Therefore, we can conclude that the light-dependent reactions in photosynthesis manufacture ATP and the reducing source NADPH necessary for light-independent reactions.

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Answer:the box would go straight

ii think

Explanation:

Answer:

if he thought that it was his own room, he wouldn't have knocked (because people don't knock on their own rooms)

The original cell density of the sample was 540 cells/mL. This was calculated based on the dilution factor and the number of colonies that grew on the plate.

To calculate the original cell density, we need to consider the dilution factor and the number of colonies that grew on the plate.

First, we determine the dilution factor. The original sample was diluted 1:100 (0.1 mL into 9.9 mL), resulting in a dilution factor of 1/100 or 0.01.

Next, we calculate the number of cells in the diluted sample. Since 0.1 mL of the diluted sample was spread on the plate and 54 colonies grew, we can assume that each colony represents one cell from the original sample.

Therefore, the number of cells in the diluted sample is 54 cells.

To find the original cell density, we divide the number of cells in the diluted sample by the dilution factor:

Original cell density = (Number of cells in diluted sample) / (Dilution factor)

                           = 54 cells / 0.01

                           = 540 cells/mL.

Thus, the original cell density of the sample is 540 cells/mL.

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Answer:

oxygen

Explanation:

6CO2 + 6H2O + light ----> C6H12O6 + 6O2

Oxygen (O2) is an element, so it cannot be broken on smaller units.

Answer:

the Glucose

Explanation:

Answer:

A

B

E

Explanation:

Commons are land or resources belonging to or affecting the whole of a community.

Answer:

Nervous tissue is the tissue that makes up the nervous system, which includes the brain, spinal cord, and nerves. Nerves are the part of the nervous system that carry messages between the body and the brain.

Explanation:

Give me brainliest if that helped!

Answer:

multiple reasons

Explanation:

satellite telecommunications, GPS, remote sensing, and space access.

Ability to test different fuels they can make for better efficiency it can go on and on my good sir.

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Answer:

A. (exponential) population

If a population grows by 3 percent each year, the growth of the population is exponential. Hence, option A is correct.

A function called exponential growth depicts an expansion within a population that happens at the same pace across time. If a population doubles or triples in size, you can assume that the data grows exponentially. Exponential decay is the inverse of exponential growth, in which data contracts rather than expands.

Bacteria are one of the best illustrations of exponential growth. Prokaryotic fission is a method of bacterial reproduction that takes around an hour. The population size of 100 bacteria would increase exponentially if we measured it every hour in a certain environment.

The population growth is exponential. Hence, option A is correct.

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Explanation:

1 Genes are contained in chromosomes, which are in the cell nucleus.

2 Sometimes, gene variants (also known as mutations) prevent one or more proteins from working properly. By changing a gene's instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all.

Answer:

b

Explanation:

Answer:

Use latex condoms every time you have sex.

Avoid sharing towels or underclothing.

Wash before and after intercourse.

Get a vaccination for hepatitis B.

Get tested for HIV.

Explanation:

its common sense

D. The DNA sequences for the cytochrome c genes in chimpanzees and spider monkeys are over 90%  identical.

The protein that the cytochrome c gene encodes for is relatively prevalent in primates. In the course of evolution, this gene has not undergone many alterations. Eukaryotic mitochondria contain the respiratory pigment cytochrome C.

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Answer:

substitution

Explanation:

Answer:✔ insertion

Explanation:

Cancer is a result of damage and mutations to the genes in a cell. Cancer cells often have damage to the apoptosis which control when cells multiply and divide. Cancer cells are unique in that they rapidly divide. Unlike healthy cells that do not multiply often. Healthy cells have genes that cause the cell to self-destruct when the cell is damaged, a process known as oncogenes.

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Determine the phenotype and gender of Beatrice & Henry's offspring. Both of Beatrice and Henry's male offspring are haemophiliacs by phenotype.

Symptoms of severe haemophilia include spontaneous bleeding from joints and muscles [1]. Usually, bleeding starts early and coincides with an increase in physical activity. However, the age of the first joint bleed varies widely, even in people with severe haemophilia. The disease was also discovered to be have genetic heterogeneity, phenotypic plasticity, and variable in expressivity with more advanced clinical and molecular approaches. In F9 variants having five different phenotypes, the variances are more prominent. the chances of obtaining a son with haemophilia is 25% (or one in four). a 25% possibility of having a son that clots normally.

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Answer:

B: Permiable but selective, like a wall with gates.

Explanation:

The practice of removing natural vegetation and replacing it with concrete and structures is known as urbanization. This is the correct answer to fill in the blank.

Industrialization, commercialization, rural-urban migration, lifestyle changes, career opportunities, social advantages, etc. are the primary reasons of urbanization. The process of urbanization is when people move from rural to urban areas for a variety of reasons.

Urban areas can expand due to a rise in the population or because people move there. Urbanization frequently causes habitat loss, deforestation, and freshwater extraction from the environment, which can reduce biodiversity and change species ranges and interactions.

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Synaptic integration is the process by which multiple synaptic potentials combine within one postsynaptic neuron. It is a mechanism through which neural information is processed and transmitted.

In the process of synaptic integration, the postsynaptic neuron receives inputs from multiple presynaptic neurons. These inputs are in the form of excitatory postsynaptic potentials (EPSPs) and inhibitory postsynaptic potentials (IPSPs). EPSPs are positive potentials that tend to depolarize the postsynaptic neuron, while IPSPs are negative potentials that tend to hyperpolarize it.

The postsynaptic neuron then combines these inputs, by adding together all EPSPs and IPSPs generated by different presynaptic neurons. The resulting synaptic potentials are then used to determine whether the postsynaptic neuron will fire an action potential or not. Synaptic integration is an essential process in the neural communication and it helps to transmit the complex information between neurons.

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