why are the fossil records not complete

Answer:

1. Support

2. Protection

3. Movement

4. Supply & Storage

Explanation:

1. Support :  It provides a framework to support the organs and tissues of the body.  

2. Protection:  It protects our internal organs.  The skull protects the brain; the thorax (sternum, ribs and spine) protects the heart, lungs and other viscera (organs within the thorax).

3. Movement:  It provides a framework for muscles to attach.  Then when the muscles contract they pull on the bones of the skeleton, which act like levers to create movement.

4. Supply & Storage:  The bones that make up the skeleton are a source of both red blood cells (which transport oxygen) and white blood cells (which fight infection), which are formed within the bone marrow.

Answer:

The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals.

Explanation:

Answer:

Restoration Ecology

Explanation:

the term for this is Restoration Ecology

Answer:

Habitat restoration

Explanation:

got it right on my quiz :))

Missense mutations replace a base by another one, leading the codon to codify for another amino acid, aletirng the protein's function. This mutation leads to the production of a dysfunctional protein, because a Cysteine amino acid has been replaced by a Phenylalanine amino acid.

When a change occurs in a codon affecting a single base pair, it is known as a point mutation.

Points mutations might be either silent, missense, or nonsense.

A missense mutation is the point mutation that changes a DNA base by another one, and causes the mRNA codon to code for a different amino acid.

The mutation that replaces a single base for another one might have different consequences concerning the substitution site and changes in the physical structure of the protein.

For instance, if the substitution occurs near the protein active site, the polypeptide function might be severely affected.

In the exposed example, a cytosine nucleotide (C) has bee replaced by an adenine nucleotide (A).

This mutation leads to the production of a dysfunctional protein, because a Cysteine amino acid has been replaced by a Phenylalanine amino acid.

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Answer:

The endoplasmic reticulum

Explanation:

It is not the lysosome because their processes are degrading and recycling cellular waste, and involved in energy metabolism

It is not the cytoplasm because the cytoplasm doesn't do anything itself, it just provides an environment for the rest of the organelles to do their job

It is not the ribosome because the amino acid chain left the ribosome in the question

For secretory, plasma membrane, and organelle proteins, the endoplasmic reticulum (ER) is a significant protein folding compartment. Thus, option C is correct.

A polypeptide chain cannot acquire its right structure and function without protein folding.

Chaperones are HSP that aid in protein folding. Chaperonins are multimeric complexes that fold proteins by forming hollow structures.

Numerous general activities of the endoplasmic reticulum include transporting produced proteins in vesicles to the Golgi apparatus and folding protein molecules into sacs termed cisternae.

Therefore, Endoplasmic Reticulum folds, modifies, and transports the protein.

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The condition is appropriate for a preschooler that keeps the head very close to the table when coloring is A.) Myopia.

This is a type of refractive error that causes the individual to have trouble seeing things far away. People with myopia can usually see objects that are near to them, but objects that are further away appear blurry and out of focus. Myopia occurs when the eyeball is too long or the cornea is too curved, this causes the light entering the eye to focus in front of the retina instead of directly on it. This can lead to symptoms like squinting, headaches, and eye strain. Myopia can be corrected with glasses or contact lenses.

In some cases, laser surgery may also be an option to correct the problem. Astigmatism is another type of refractive error that causes blurry vision, but it's not necessarily related to how close a child's head is to the table. Hyperopia and Anisometropia are also types of refractive errors, but they usually don't cause a child to hold their head close to the table. Therefore, Myopia seems to be the most appropriate condition for a preschooler that keeps their head very close to the table while coloring, so the correct answer is A.) Myopia.

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The genes revived from parents by an offspring form its genotype.

The term genotype refers to the sum total of the genes that an organism inherits from its parents. Looking at the information in the question;

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Explanation:

The limnetic zone is the open and well-lit area of a freestanding body of freshwater, such as a lake or pond. Not included in this area is the littoral zone, which is the shallow, near-shore area of the water body.

Answer:

3.8 kilometers (2.4 miles) per second.

Answer:

The DNA would not be able to meet the needs of the cell. it's the answer...

From the table, we can conclude that two organism that most closely related  are Lion and Tiger.

To see the kinship of plants or animals, we can use a taxonomic system, which is a system of grouping animals or plants based on their level. The goal is to make it easier to recognize living things based on similarities or differences in appearance.

The closeness of a creature's relationship can be seen from the taxonomic order from the highest to the lowest level: Kingdom, Phylum, Class, Order, Familia, Genus, Species.

Based on the order, the table above shows that lions and tigers belong to the genus Panthera, so that their closest relatives are lion (Panthera leo) and tiger (Panthera tigris).

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Answer:

45 N

Explanation:

Add the forces together if they are going in the same directions.

20 N+25 N=45 N

Answer:

Theories have been confirmed through tests; hypotheses have not been tested.

Explanation:

Theories have to be proven, whilst hypotheses is an experiment that is carried out without yet knowing the outcome.

Answer: It’s C :)

Explanation:

The most recent groups  of animals appeared on Earth among given choices is the - option C. Mammals

Different organisms appeared in different time periods on the geological time scale on the earth. We know that prokaryotes are the most ancient organisms about 3.5 - 3.8 billion years ago then due to the presence of oxygen photosynthetic organisms appeared 3 billion years ago, 2 billion years to eukaryotic cells, and 1 billion years of multicellular life.

 Fossils studies help in finding the time scale of the organism that appeared or was extinct on the earth.

Earth includes the evolution of animals as the following:  

Thus, the correct answer would be - option C. mammals.

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Answer:

Chromosomes form is DNA in during mitosis.

Explanation:

In the context of the cell cycle, mitosis is the part of the division process in which the DNA of the cell's nucleus is split into two equal sets of chromosomes.

During mitosis, DNA is in the form of chromosomes, which is option D, as the chromosomes are condensed and highly coiled structures made up of DNA and associated proteins called histones.

During mitosis, a cell divides into two daughter cells that are genetically identical to the parent cell. Chromosomes are critical to this process because they carry the genetic information necessary for the formation of the new cells, and before mitosis begins, the chromatin (a complex of DNA and proteins) in the nucleus of the cell condenses into visible chromosomes. This condensation process involves the compaction of chromatin into a more compact and organized structure.

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Answer:

(C) to show that atoms are conserved in chemical reactions

Answer:

C- to show that atoms are conserved in chemical reactions

Explanation:

The  pain is located inferior to the sternum posterior to the trachea, and medial to the left lung utilizing anatomical directional terms allows for precise communication of the location, aiding in accurate diagnosis and treatment.

The individual in question is experiencing pain in his esophagus, the muscular tube that connects the throat to the stomach.

To accurately describe the location of this discomfort, we can employ anatomical directional terms as follows:

Inferior to the Sternum:

The man's pain is located inferior to the sternum, which refers to the breastbone.

This directional term indicates that the pain is situated below the sternum in the upper abdomen or the region of the epigastric area.

The esophagus passes through the diaphragm just below the sternum.

Posterior to the Trachea:

The pain is situated posterior to the trachea, the airway tube commonly known as the windpipe.

By using the term "posterior," we indicate that the discomfort is positioned at the back of the trachea, closer to the spinal column.

This indicates that the pain is located deeper within the body, behind the central airway.

Medial to the Left Lung:

The man's pain can be described as medial to the left lung.

By utilizing the term "medial," we indicate that the discomfort is positioned closer to the midline of the body.

In this case, it suggests that the pain is situated towards the center, relatively closer to the left lung.

This directional term helps to specify the pain's position in relation to surrounding structures.

Utilizing anatomical directional terms allows for precise communication of the location, aiding in accurate diagnosis and treatment.

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The  pain is located inferior to the sternum posterior to the trachea, and medial to the left lung utilizing anatomical directional terms allows for precise communication of the location, aiding in accurate diagnosis and treatment.

The individual in question is experiencing pain in his esophagus, the muscular tube that connects the throat to the stomach.

To accurately describe the location of this discomfort, we can employ anatomical directional terms as follows:

Inferior to the Sternum:

The man's pain is located inferior to the sternum, which refers to the breastbone.

This directional term indicates that the pain is situated below the sternum in the upper abdomen or the region of the epigastric area.

The esophagus passes through the diaphragm just below the sternum.

Posterior to the Trachea:

The pain is situated posterior to the trachea, the airway tube commonly known as the windpipe.

By using the term "posterior," we indicate that the discomfort is positioned at the back of the trachea, closer to the spinal column.

This indicates that the pain is located deeper within the body, behind the central airway.

Medial to the Left Lung:

The man's pain can be described as medial to the left lung.

By utilizing the term "medial," we indicate that the discomfort is positioned closer to the midline of the body.

In this case, it suggests that the pain is situated towards the center, relatively closer to the left lung.

This directional term helps to specify the pain's position in relation to surrounding structures.

Utilizing anatomical directional terms allows for precise communication of the location, aiding in accurate diagnosis and treatment.

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Answer:

B. I, II, III, and IV

Scientists classify organisms into groups based on all of the choices listed

Evolutionary phylogeny refers to the evolutionary history of a species, and scientists use this information to group organisms into different categories based on their shared ancestry. DNA analysis is also a crucial tool for determining evolutionary relationships between different organisms.

Embryology involves studying the development of embryos, and similarities in embryonic development can help scientists identify evolutionary relationships between organisms.

Morphology, which refers to the physical structure and form of an organism, is another key factor in classifying organisms. Scientists use similarities in anatomical features such as bone structure, internal organs, and other physical characteristics to group organisms into different categories.

Therefore, based on the above explanation, the correct answer is B, which includes all of them.

The coronavirus lockdown had both positive and negative impacts on our oceans and atmosphere.

On the positive side, the shutdown of global industrial activities quickly reduced air pollution and greenhouse gas emissions, leading to a decrease in global average temperatures. This allowed for a brief respite from climate change, as well as a decrease in ocean acidification.

On the negative side, the lockdown led to a decrease in the effectiveness of existing environmental policies, as governments had to prioritize other aspects of the crisis. This allowed for an increase in illegal fishing, plastic waste, and other pollutants in the oceans and environment.

Overall, the lockdown has helped to slow the rate of climate change and ocean acidification, but it has not been able to completely stop it. To improve the situation, global governments must continue to implement effective environmental policies and work together to reduce air pollution and emissions. Only then can we make a real impact in the fight against climate change and ocean acidification.

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Answer:

C. They help break down dead organic matter and return nutrients to the soil.

Explanation:

Decomposers are organisms that break down other dead organisms. They also return nutrients to the soil.

The best option would be the letter A. They supply freshwater to support life on Earth.

Freshwater is the ultimate source of water in the terrestrial biome. It is not only important in the terrestrial biome but also in the aquatic ecosystem as it helps in transporting nutrients (ex. river is connected to the ocean).

Answer:

D) Factories and Photosynthesis

The fact that God created amazing tides of moon and sun shows the orderliness of God and his eternal involvement in the well being of creation.

At the bedrock of all the religious ideology that we have in the world today lies the presupposition that God created the heavens and the earth. This idea of a supreme being which is the creator of the universe does resonate well among all the major religions of the world.

Now, we can see that this supreme being also ensured that the moon and sun work in harmony to create the amazingly consistent tides we see every day on Earth.  This goes a long way to underscore the orderliness of  the creator God.

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The initial stimulus Jane and Theo experienced in the first five minutes in the cold room was a decrease in body temperature. This decrease in body temperature disrupted their homeostasis, which is the body's ability to maintain a stable internal environment.

In response to the drop in temperature, their bodies initiated various physiological responses to restore homeostasis.

One of the primary responses their bodies would have is vasoconstriction, which involves the narrowing of blood vessels near the skin's surface.

This reduces blood flow to the extremities and redirects it to the core of the body. By minimizing blood flow to the skin's surface, less heat is lost to the environment, helping to conserve body heat.

Additionally, they might experience shivering, where their muscles involuntarily contract and relax rapidly. Shivering generates heat through muscular activity, helping to raise body temperature.

The combination of vasoconstriction and shivering aims to increase body temperature and restore homeostasis by counteracting the initial drop in body temperature.

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The widespread concern about bloodborne infections began in the early 1980s when the HIV/AIDS epidemic emerged.

It quickly became apparent that the virus was primarily spread through contact with infected blood and other bodily fluids, and this heightened public awareness of the risks associated with bloodborne pathogens. The Centers for Disease Control and Prevention (CDC) issued recommendations for universal precautions to protect health care workers from exposure to blood and other potentially infectious materials in 1987.

These guidelines, which are still in effect today, include the use of gloves, masks, and other protective equipment, as well as practices such as safe disposal of needles and other sharps. Since then, awareness of bloodborne pathogens and the importance of proper infection control practices have grown significantly, and these issues are now addressed in the occupational health and safety policies of many organizations.

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Answer:

Anatomy.

Because Anatomy is the study of internal body organs

The gal80 gene that blocks the ability of gal80 protein to interact with gal3p by the activation of gal80 gene.

In Saccharomyces cerevisiae, galactose turns on the allosteric sign transducer Gal3 protein (Gal3p), which in flip inactivates the repressor Gal80p, thereby activating the Gal4p-established transcriptional activation of GAL genetic switch.

If the GAL80 gene product can not engage with Gal3p, there may be no interplay with the Gal4p/Gal80p complicated and consequently no GAL1 transcription. In the absence of galactose, Gal80 binds to and inhibits the transcriptional activation domain (AD) of the GAL gene activator, Gal4, stopping GAL gene expression. Galactose triggers an affiliation among Gal3 and Gal80, relieving Gal80 inhibition of Gal4.

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food poisoning is direct contact

The observed improvement in mean scores after the GRE Prep course suggests its effectiveness, crucial to consider potential confounding variables ,alternative explanations for the increase in scores.

Confounding variables refer to additional factors that may influence the results independently of the training. For instance, if the students in the post-test had more study time or were more motivated compared to the pre-test, their scores could have improved regardless of the course. Other factors such as test-taking skills, prior knowledge, or external coaching could also play a role. To investigate this more scientifically, a well-designed study would be necessary. A randomized controlled trial (RCT) is commonly used to evaluate the effectiveness of interventions like the GRE Prep course.

Additionally, collecting additional data on potential confounders, such as prior study habits, motivation levels, or external resources utilized, would allow for a more comprehensive analysis. Statistical analyses, such as regression models, could be employed to examine the impact of the course while controlling for these variables. By implementing rigorous scientific methods and accounting for confounding variables, a more accurate evaluation of the GRE Prep course's impact on score improvement can be achieved.

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Answer: Antiparallel

Explanation:

DNA is composed of two strands of nucleotides. The strands each run from 5' to 3' and run in antiparallel, or opposite, directions from one another.