Elements, carbon, hydrogen and oxygen can be found in which macromolecule(s)?
O Protein
O Lipids
O Carbohydrates
O Nucleic Acids
O All of the above
O Proteins and Lipids only
O Carbohydrates and Nucleic Acids only

Thousands of genes make up a single chromosome ,a double helix DNA molecule wrapped around proteins.

Chromosome is a structure found inside the nucleus of a cell . It is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes, of which 22 pairs of chromosomes are called the autosomes and the last pair of chromosomes is called the sex chromosome and are individually called the X and Y chromosome.

In most of the chromosomes, the very long thin DNA fibers are coated with packaging proteins, in eukaryotic cells the most important of these proteins are the histones.

Chromosomes allow the DNA to be accurately copied during these cell divisions.This ensures that our inner mechanisms proceed smoothly and efficiently.

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Answer:

In contrast to normal cells, cancer cells often exhibit much more variability in cell size—some are larger than normal and some are smaller than normal. In addition, cancer cells often have an abnormal shape, both of the cell, and of the nucleus (the “brain” of the cell.)

Answer:

Cancer cells grow in the absence of signals telling them to grow. Normal cells only grow when they receive such signals. Cancer cells divide in an uncontrolled manner, while normal cells divide in a controlled manner. Cancer cells do not show contact inhibition, while normal cells do. The lifespan of cancer cells is indefinite, while normal cells have definite lifespans.

Explanation:

Option - B  is an example of a recent development used to address food shortages in urban areas.

The primary causes of food insecurity in urban environments

They may not have social or extended family support, especially if they are recent migrants to the city, so they must hire substitute childcare, which adds to their family's financial burden.

Opening temporary, low-cost fruit and vegetable markets in underserved areas. Studying initiatives like community food hubs or farmers' markets nutrition vouchers that have helped other communities fight food insecurity

By providing wholesome and plentiful alternatives to purchased food, urban agriculture enhances food security, particularly for low-income households.

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When the eagle saw the mouse, it got exited that he was finally going to have dinner today.

The event that occur is that when the eagle saw the mice, using it nervous system detect the signal,then send the signal to the brain, the brain then interpret it as food , then the eagle catch it and eat it.

Nervous system is the system in the body that comprises of brain, spinal cords and nerves which detect electrical impulses and send the signal to the brain which then interpret the signals into information and then the body respond base on the interpretation.

Therefore, The event that occur is that when the eagle saw the mice, using it nervous system detect the signal,then send the signal to the brain, the brain then interpret it as food , then the eagle catch it and eat it.

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It is precipitation that is caused by the energy driven from gravity. The correct answer is option A.

It is making up of crystals that is the hardened structures that may or may not have the definite structures and shapes from the liquid.

From the clouds under the impact of gravity the water falls down and flow downward towards the shed and flow in downward direction. Energy from the sun and the water cycles continue these cycles.  

Precipitation comes up when the water gets condensed in the clouds and the water gets flown away from the clouds when evaporation. when the drops are heavy and they fall on Earth in the downward direction.

Precipitation is causing the condensation of clouds and the latter later forms the clouds via the process of precipitation of it falls down.

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Mendel gathered his data for tens of thousands of plants before coming to the conclusion that the traits might be divided into expressed and latent features. These traits were described by him as being dominant and recessive, respectively. In a hybridization, dominant features are those that are passed on unaltered. 

The three laws of dominance, independent assortment, and segregation serve as a summary of all the findings of Mendel's experiment. He proposed that each gene be passed down to the organisms twice, once from each parent. In their gametes, organisms only share one copy of each gene. In his opinion, traits are discretely inherited from each parent, one at a time.

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A two-chamber legislature. a legislative bodies with two chambers or components. the bicameral legislature made up of the House of Congress and the Senate.

Two chambers share legislative authority in a bicameral legislature or legislature. Around 80 body nations in the planet have bicameral legislatures. Generally speaking, bicameralism is more prevalent bodies in federal, big, presidential governments, whereas unicameralism is more prevalent in unitary, small, legislative states. In the United States, bicameral legislatures make up the majority of state and bicameral legislatures. That is, there are two distinct bodies that make up each legislative. These two organizations are separate, autonomous entities made up of delegates who frequently hold varying terms and convene bodies in different chambers.

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Answer:

Food, Inc. Summary

If you aren’t completely familiar with what it is, Food, Inc was created by documentary filmmaker Robert Kenner and narrated by Eric Schlosser (Fast Food Nation), and also features commentary from Michael Pollan (The Omnivore’s Dilemma).

It lifts the veil on how the nation’s food industry has been consumed by corporations and how that impacts the farms where our food comes from, the supermarkets where we buy our food, and the restaurants where we eat that food. It tackles the FDA, food safety, food production, large-scale animal processing plants, and other food matters. If you are at all concerned or curious about the state of food supply in America, you should watch Food, Inc.

The Key Takeaways from the Movie

Supermarkets and Corn

The tomatoes you buy in the grocery store are picked when green and then ripened with ethylene gas

The food industry doesn’t want you to know the truth about what you are eating because if you did you might not eat it—it is a world deliberately hidden from us

Most people have no idea where their food comes from (do you?)

The fact that people need to write a book (and a blog!) telling people where their food comes from shows how far removed we are

The average grocery store has 47,000 products which makes it look like there is a large variety of choices—but it is an illusion—there are only a handful of corporations (like Monsanto, Tyson, and Perdue for example) and a few major crops involved

So much of the processed food is just clever rearrangements of corn (here are just a few examples of the additives that are derived from corn: cellulose, saccharin, polydextrose, xanthan gum, maltodextrin, and my favorite—ha ha ha—high fructose corn syrup)

30% of our land base in the US is used to grow corn because thanks to government policy farmers are paid to overproduce this easy-to-store crop

Farmers are producing so much corn that food scientists had to come up with uses for it—just like some of the additives listed above

Food scientists have also spent a lot of time reengineering our foods—so they last longer on grocery store shelves and don’t get stale

At the supermarket, candy, chips, and soda are all cheaper than produce

A double-cheeseburger from McDonald’s is 99 cents and you can’t even get a head of broccoli for that price

Those snack calories are cheaper because the commodity crops like corn, wheat, and soybeans are heavily subsidized

You start feeding corn to cows, E. Coli evolves and a certain mutation occurs which is very a harmful bacteria

Animals at factory farms stand ankle deep in their manure all day long so if one cow has E. Coli others can get it too

At a slaughterhouse their hides are caked with manure and if you are slaughtering 400 cows per hour how do you keep it from spreading?

So these harmful new strains of e Coli, that didn’t use to be in the world, are now a problem

E. Coli is even in spinach and apple juice because of the runoff from factory farms

It doesn’t help that the Chief of Staff for the USDA was a former lobbyist for the beef industry

Regulatory agencies are being controlled by the very companies they are supposed to be scrutinizing

There has always been food poisoning, but food is not getting safer it is becoming more contaminated because with the bigger factories it spreads the problem far and wide

There are only 13 slaughterhouses for the majority of beef in all the US

Ground beef from the grocery store has thousands of different cows mixed up in it so the chance of one of those cows in your meat having a disease is increased

After eating hamburger contaminated with E. Coli 0157:H7 a woman’s 2-year-old son went from a perfectly healthy boy to being dead in 12 days

In the 90’s some industrial meat factories were tested for E. Coli 0157:H7 and if they failed they were supposed to be shut down—but there was not enough authority to close the contaminated plants

Some companies are now using a hamburger meat filler cleansed with ammonia hydroxide to help kill E. Coli (mmm…that sounds tasty)

Answer:

What would happen if gametes had a full set of DNA? The number of DNA strands would double with each generation. One gamete cell divides into four cells, but each resulting cell has half the amount of DNA as compared to the original cell. Body cell mitosis

Explanation:

Answer:

All answers are in the image

Whales need oxygen for respiration processes because they do not have gills, and whales are unable to breathe oxygen that is dissolved in water.

The lack of gills, which prevent whales from breathing oxygen dissolved in water, is the most obvious distinction between whales and other fish. Instead, they have lungs, which means that whenever they want to breathe air, they have to come to the surface.

They can stay underwater for hours at a time because they have a very efficient respiratory system that allows their lungs to get the most out of each breath. To put things in perspective, when we are at rest, humans breathe about 12 to 20 times per minute, but they only take in 5% of the oxygen in a single breath. This is in contrast to a whale, which can absorb up to 90% of the oxygen it breathes. This indicates that a whale takes in significantly more oxygen in a single breath than a human does.

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They've been under the purview of balancing selection. This type of selection occurs when two alleles – one being the harmful variant and the other being the beneficial variant – both confer some sort of benefit in the presence of each other. This can work in two ways. Sometimes the balance of deadly and beneficial alleles can create a balance in the population, allowing for genes to persist over time. In other cases, the lethal genes can be beneficial if there is an environmental change and the deadly gene can offer protection from the new environment. Both of these scenarios create a balance of selection, allowing for the persistence of the gene over time. In some cases, the lethal genes are essential for the maintenance of certain gene complexes and, if lost, could result in decreased fitness. This type of selection is known as evolutionary pressure and it can also contribute to the longevity of certain genes. A third possibility is that some of the genes simply survive due to random genetic drift.

Mendelian inheritance is the term used to describe how qualities that are regulated by a single gene with two alleles, one of which may be dominant to the other, are passed down from parent to child. Even though just a few human features are governed by a single gene with two alleles, they provide a solid foundation for learning about human heredity. 

He came to the conclusion that each parent transmits a pair of distinct genes to their offspring. Mendel studied how parental genes diverged and whether they manifested in the offspring as dominant or recessive traits. He was familiar with the mathematical traditions that were passed down from one generation to the next. Mendel's approach created a genetics template that is still employed today for gene discovery and comprehending the genetic characteristics of inheritance.

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Answer: B

Explanation:

Answer:

1. group A

2. Productivity of workers

3. Special juice drink consumption

4.  Group B

5.  Refuted

Explanation: sorry if am not correct

Answer:

mutualistic relationship

Explanation:

Answer:

Bacteria and other microbes play an important role in the environment that is of decomposers which act in the last stage of the food chain. These microorganisms like bacteria cause the breakdown of energy-rich organic compounds. These compounds come from decaying matter of plants such as leaves or animals waste products and dead bodies.

Answer:

Renewable: Water, Trees, Wind, Ice Cubes, Sunlight, Salt Water, Lumber, Paper

Non-renewable: Coal, Oil, Plastics, Bauxite (Aluminum), Natural Gas, Gold Jewelry, Iron, Soda Can

When an allogenic blood component is shipped from a donor center with incomplete infectious disease testing, it must be labeled appropriately to ensure the safety of the patient.

The label must include a message stating “For Emergency Use Only By (Specific Patient)”, as well as any tests that have been completed, and those tests that are negative.

There is no specific color requirement for the label, so it is important to ensure that the message is clearly visible. It is also important to note that the unit must not be released for transfusion until appropriate infectious disease testing is completed and verified. This is to ensure that the patient is not exposed to any additional risk.

Proper labeling is essential in helping to identify any potential risks associated with the unit, so that the patient receives the safest blood possible.

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Hershey and Chase demonstrated that DNA is the sole substance transmitted directly from bacteriophages into bacteria when the bacteria are infected by these viruses by utilizing radioactive labels that would integrate selectively into either DNA or protein but not both.

Alfred Hershey and Martha Chase began looking for genetic material in organisms in 1952. Their investigations proved unequivocally that DNA is genetic material. Bacteriophages (viruses that attack bacteria) were key to Hershey and Chase's experiment.

Proteins were assumed to be the molecules that carried genetic information for many decades. Several researchers' efforts resulted in the revelation that DNA is the genetic material. Griffith found the process of change along the road.

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Answer:

the well-lit upper layer of the ocean; algae and other producers can grow only in this surface layer

Answer:

What does it say? I can't read it well

Explanation:

Answer:

chaparral

Explanation:

Chaparral biome is the broad-leaved evergreen scrub forest (sclerophyllous or thick leaved shrubs and small trees) found in Mediterranean and Pacific coast of several countries with winter rains and dry summer.

Both plants and animals are adapted to frequent and long periods of

drought. Bush fires are common. Several plants are fire resistant. Plants include Sage, Arctostaphylos,

Adenostemma and Coenothus. Trees of

Oak and Eucalyptus occur at places.

Fauna consists of drought

adapted animals like rabbits, deer, rats, snakes, lizard and birds.

Answer:

Yeast and some bacteria.

Explanation:

My sister used to make homeade kombucha, which is a tea/drink made with bacteria that grows over time. it is indeed made with alcohol, but keep in mind that yeast is a living organism, and it is in some alcohols like wine and beer.

An insertion and deletion is called as a frameshift mutation .

An insertion is a point mutation in which one or more base pairs is added to a DNA sequence. Point mutations is further divided into silent mutations, missense mutations, and nonsense mutations.

Frameshift mutation is considered as a genetic mutation caused by a deletion or insertion in a DNA sequence. This kind of mutation shifts the way the sequence is read. diseases like cystic fibrosis is a result of frameshift mutation that alters the CFTR gene. The harshness of frameshift mutation is reliant on the number of nucleotides and the position of insertion of nucleotides.

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The endocardium covers the heart valves and it is these valves that are primarily affected by infective endocarditis. If an infection is left untreated, bacteria can grow and eventually destroy the valve, leading to heart failure.

Three layers of tissue make up the wall of the heart. The outer layer of the heart wall is the epicardium, the middle layer is the myocardium, and the inner layer is the endocardium.

The endocardium is the innermost layer of the heart, lining the ventricles and covering protruding structures such as the heart valves, chordae tendineae, and papillary muscles. Endocardial cells are developmentally and biologically similar to the endothelial cells that line blood vessels. The endocardium protects the valves and heart chambers as well.

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The respiratory system is responsible for maintaining a normal breathing pattern by bringing oxygen into the body and removing carbon dioxide. This process is controlled by the brainstem.

The brainstem sends signals to the muscles of respiration, including the diaphragm and the intercostal muscles. The diaphragm is the main muscle used for breathing and contracts during inhalation, causing the lungs to expand and fill with air.

The intercostal muscles, located between the ribs, also contract during inhalation to lift the ribcage and increase the volume of the thoracic cavity. During exhalation, the diaphragm and intercostal muscles relax, and the lungs deflate, pushing air out of the body. The rate and depth of breathing are also regulated by a complex network of nerve cells in the brainstem that respond to changes in blood oxygen and carbon dioxide levels, as well as to other physiological and psychological factors.

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Answer:

one thing that is harmful is pollution. it kills lots of sea life and harming out air. a way we can pollute in a helpful way is to only throw things on the ground that is biodegradable and not plastic