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Muscular Strength and Endurance: Mastery Test
4
Select the correct answer.
What must skeletal muscles do to move?
A.
engage their fibers slowly
В.
twitch involuntarily
Oc.
separate from the bone
O D.
contract and relax
Reset
Next

Answer:

Photochemical smog.

Explanation:

Photochemical smog occur when the hydrocarbons and nitrogen oxides react with sunlight. The hydrocarbons emit toxic compounds that is present in fossil fuels and nitrogen oxides that is produced due to high temperature and emitted from vehicles when combine with the sunlight produces photochemical smog or ozone. If this smog is present near the surface of earth, it adversely affect our health.

These four steps could result in the formation of this smog leads to photochemical smog.

Photochemical smog is created when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere.

Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. VOCs are released from gasoline, paints, and many cleaning solvents

Thus, these steps lead to photochemical smog.

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Answer:

I would argue that animal pollination of blooming plants is the most successful form of sexual reproduction for generating genetic variation.

According to science, animal pollination enables the transport of pollen from one flower to another, increasing the genetic variety of the population. This is so that there is a greater potential of genetic mixing because different animals may visit various blooms, dispersing pollen from various plants.

Another justification is that, in contrast to wind pollination, animal pollination frequently entails actively moving pollen from one flower to another, which may result in higher genetic variety. While wind-borne pollen frequently travels enormous distances, it also tends to be dispersed by plants that are close relatives. Animals who visit flowers and spread pollen, on the other hand, are more likely to visit a variety of plants, encouraging greater genetic mixing.

Animal pollination also transfers genetic material from one plant to another, rather than only within a single plant or a group of closely related plants, making it more effective in promoting genetic variety than both animal internal fertilisation and external fertilisation.  

Answer:

Covalent bond involves sharing of electrons.

The likelihood of producing a human with these traits from the cross Eeddff x Eeddff is 1 out of 4, or 25%.

A Punnett square is a grid that displays the potential progeny of a cross between two people. The children can be read from the other axis of the grid, and each box in the grid represents a potential gamete (sperm or egg) that can be generated by one of the parents.

The parent Eeddff can produce either E or e for the first attribute (eyelashes), and the parent Eeddff can create either E or e as well. The Punnett square for the eyelash characteristic is as follows: According to the last Punnett square, only one probable human, DdFE, possesses long eyelashes (E), dimples (D), and attached earlobes (f).

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Answer: C or D

Explanation:

Answer:

The vacuoles is like the cabinets in the school used to store items. where we release all of our energy. Cytoplasm is like the hallways of the school.

Answer:

It should be d -- photosynthesis.

Explanation:

Fermentation is changing something from one organic to another using enzymes. There is chemical energy involved, but light is not.

Cellular respiration does involve chemical change but the products are CO2 and water. The change creates energy, but light is not involved.

There is a chemical change in Glycolysis. This process breaks down the simple sugars to produce 2 molecules each with 3 Carbons and again light is not involved.

The answer is photosynthesis. This involves light and chemical change.

The pancreas has multiple functions in the body, including both endocrine and exocrine functions. The primary function of the pancreas is to produce and secrete digestive enzymes and hormones.

As an exocrine gland, the pancreas produces and releases digestive enzymes into the small intestine to aid in the breakdown and digestion of carbohydrates, proteins, and fats. These enzymes include amylase, lipase, and proteases, which play crucial roles in the digestion and absorption of nutrients from food.

In addition to its exocrine function, the pancreas also acts as an endocrine gland. It secretes hormones such as insulin and glucagon into the bloodstream, which are essential for regulating blood sugar levels.

Insulin helps lower blood sugar levels by facilitating the uptake and storage of glucose by cells, while glucagon helps raise blood sugar levels by stimulating the release of stored glucose from the liver.

Overall, the pancreas plays a vital role in both digestion and glucose regulation, contributing to maintaining overall metabolic balance in the body.

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Answer:

crust

Explanation:

During light condition, starch formation increases.

The amount of starch formation represented by the arrow can be increased in the presence of light because in the chloroplast of leaves, starch is synthesized during the day and degraded during the night.

Starch is a polysaccharides which is made up of a long chain of glucose. The sub units that for starch are glucose atom and we know that glucose is produced in the process of photosynthesis so we can conclude that during light condition, starch formation increases.

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When lung volume increases, the intrapulmonary pressure decreases. This is due to the fact that the lungs are enclosed in the thoracic cavity

which is bounded by the diaphragm at the bottom and the ribcage on the sides. The diaphragm is the primary muscle of respiration, and when it contracts, it flattens and moves downward, increasing the volume of the thoracic cavity. This increase in volume causes the lungs to expand and pull away from the thoracic wall, resulting in a decrease in intrapulmonary pressure.

This decrease in pressure creates a pressure gradient between the atmosphere and the alveoli of the lungs, causing air to flow into the lungs. This process is known as inhalation, and it is the first step in the process of respiration. When lung volume decreases, the reverse happens, with an increase in intrapulmonary pressure causing air to flow out of the lungs during exhalation.

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Answer:

glucose

Explanation:

Answer:

Explanation:

To late?

Answer: honestly it really depends on the water and how its dripped

Explanation:

they were classified as echinoderms and not as a new phylum because they have the attribute of the echinoderm where they were seen as the sea stars without arms, they live in the deep ocean.

An echinoderm  can be described as the any member that can be attributed to the phylum Echinodermata.

The members of this family can be seen as one that posses a recognisable radial symmetry which help in the process of their classification, and some of the members that fall into this caetegories are:

It should be noted that the phylum can be seen as the level of classification or taxonomic rank  that can be seen below kingdom.

In conclusion, the Sea Daisies which was thenew class of echinoderm that was discovered in 1986 can be classified as the echinoderm and not as phylum since they have the feautures of the echinoderm.

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Part A:

The genes for feather color and texture are independently assorted, with light blue being more dominant than smooth and dark blue. It appears that the characteristics for wing colour (light blue vs. dark blue) and wing texture (smooth vs. ridged) are separately assorting based on the observed ratios of offspring with various combinations of wing colour and texture.

Part B:

One theory for why lactose tolerance evolved in humans is that increased selection during famines led some individuals to have a different food supply and increased fat consumption, which offered more resources for improved fitness. These two possibilities may serve as theories for the evolution of lactose tolerance in humans. One characteristic often seen in people with a history of dairy farming is the ability to digest lactose (the sugar contained in milk) from infancy.

Therefore, the correct options for Part A and Part B are B and B &D respectively.

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Answer:

CO2 concentration

temperature

Light intensity

Explanation:

these have impact on photosynthesis

Answer:

symbiosis.

Explanation:

The term that you are referring to is symbiosis. (a symbiotic relationship)

Symbiosis is a proximate and often long-term interaction between two or more different biological species.

The human body contains trillions of cells, 78 different organs, and more than 60,000 miles of blood vessels if you stretched them end-to-end. Incredibly, all of these cells, vessels, and organs work together to keep you alive.

Each organ belongs to one of ten human body systems. These body systems are interconnected and dependent upon one another to function. Your heart does not beat unless your brain and nervous system tell it to do so. Your skeletal system relies on the nutrients it gains from your digestive system to build strong, healthy bones.

A body system is a group of parts that work together to serve a common purpose. Your cardiovascular system works to circulate your blood while your respiratory system introduces oxygen into your body.

Each individual body system works in conjunction with other body systems. The circulatory system is a good example of how body systems interact with each other. Your heart pumps blood through a complex network of blood vessels. When your blood circulates through your digestive system, for example, it picks up nutrients your body absorbed from your last meal. Your blood also carries oxygen inhaled by the lungs. Your circulatory system delivers oxygen and nutrients to the other cells of your body then picks up any waste products created by these cells, including carbon dioxide, and delivers these waste products to the kidneys and lungs for disposal. Meanwhile, the circulatory system carries hormones from the endocrine system and the immune system’s white blood cells that fight off infection.

Each of your body systems relies on the others to work well. Your respiratory system relies on your circulatory system to deliver the oxygen it gathers, while the muscles of your heart cannot function without the oxygen they receive from your lungs. The bones of your skull and spine protect your brain and spinal cord, but your brain regulates the position of your bones by controlling your muscles. The circulatory system provides your brain with a constant supply of oxygen-rich blood while your brain regulates your heart rate and blood pressure.

Even seemingly unrelated body systems are connected. Your skeletal system relies on your urinary system to remove waste produced by bone cells; in return, the bones of your skeleton create a structure that protects your bladder and other urinary system organs. Your circulatory system delivers oxygen-rich blood to your bones. Meanwhile, your bones are busy making new blood cells.

Working together, these systems maintain internal stability and balance, otherwise known as homeostasis. Disease in one body system can disrupt homeostasis and cause trouble in other body systems. If you become ill with the AIDS virus that affects your immune system, for example, you may develop pneumonia in your respiratory system, a yeast infection in your reproductive system, Candida that affects your esophagus in your digestive system, or the skin cancer known as Kaposi’s sarcoma.

Answer:

Positively charged amino acids

Explanation:

Heparin is an acid polysaccharide that has a strong negative charge due to the sulfate groups on its glucosamine residues. This negative charge confers to heparin anticoagulant activity. The negatively charged groups in the heparin molecule can interact with positively charged (basic) residues, such as arginine (Arg) and lysine (Lys) of plasma proteins. For example, it has been shown that lysine amino acid residues of antithrombin III may be involved in the binding with heparin.

Answer:

I think you can find genetic relationships by the looks and the way you act.

brainiest pls

Answer:

Studies revealed that glucose binds with the RBC membrane and intracellular proteins and increases membrane rigidity. The thing is that the concentration of glucose in the solution used is less than compared to the concentration of the same inside RBC and the cells swell up due to endometriosis.

Among the given options, the statement that Abigail is most likely to include on the flyer for acupuncture aftercare is C. "The dog or cat may exhibit sleepiness for a day or two after treatment."

Abigail is tasked with creating an aftercare flyer for new patients after their first acupuncture treatment at a holistic veterinary clinic. The purpose of the flyer is to provide helpful information to owners and minimize the need for phone calls and inquiries.

This statement is relevant and important because it informs pet owners about a common post-treatment effect of acupuncture, which is temporary sleepiness in their pets.

By including this information, Abigail can prepare owners for this normal reaction and alleviate any concerns they may have. It helps manage their expectations and ensures that they don't worry unnecessarily if their pet appears sleepy after the treatment.

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Answer:

Genotypes Ww and ww, Phenotypes 50% white, 50% yellow

Explanation:

This question involves a single gene coding for wing color in cabbage butterflies. The allele for white wings (W) is dominant over the allele for yellow wings (w). This means that a heterozygous (Ww) will have the white color of wing.

According to this question, if a Ww (white) butterfly is crossed with a ww (yellow) butterfly, the following gametes will be produced by each parent:

Ww - W and w

ww - w and w

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

Ww, Ww, ww, we

Ww = white wings (50%)

ww = yellow wings (50%)

No, "Crick and Watson" is not a type of genetic test. Crick and Watson refer to James D. Watson and Francis Crick, who were scientists involved in the discovery of the structure of DNA. They proposed the double-helix structure of DNA in 1953, which provided the foundation for understanding genetic information and its role in heredity.

Genetic tests, on the other hand, are laboratory tests that analyze an individual's DNA or genes to provide information about their genetic makeup, potential genetic disorders, or predispositions to certain conditions.

These tests can be used for various purposes, such as diagnosing genetic disorders, predicting the risk of developing certain diseases, determining carrier status for genetic conditions, or providing ancestry and genealogical information.

While Crick and Watson made significant contributions to the field of genetics, they are not directly associated with genetic testing. Genetic tests are based on scientific advancements and technologies developed after their groundbreaking discovery of the DNA structure.

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Answer:

The rabbit population will consist of 35% white rabbits and 65% brown rabbits.

Explanation:

hope this helps!

The rabbit population will consist of 35% white rabbits and 65% brown rabbits.

Until a limiting factor, such as low reproduction, food scarcity, predation, disease, and/or weather conditions restrict populations, the population tends to grow.

Some density-dependent limiting factors are the spread of pathogens, competition for nesting locations, the destruction of habitat, increase in the population of predators. Several predators, including raptors and coyotes, use rabbits as food, but in urban and suburban areas, cats and dogs pose the biggest threat. Some abiotic limiting factors are drought, flood, earthquake, and all types of natural disasters.

Thus, the rabbit population will consist of 35% white rabbits and 65% brown rabbits.

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the evidence that all life on Earth shares common features is that All life on Earth performs transcription and translation in a similar fashion. and All life on Earth has cells surrounded by membranes.

What is transcription and translation?

The process of transcribing a piece of DNA into RNA is known as transcription. Messenger RNA is created when segments of DNA are translated into RNA molecules that can encode proteins. Translation is the process by which ribosomes in the cytoplasm or endoplasmic reticulum create proteins following the transcription of DNA to RNA in the cell's nucleus. The entire process is known as gene expression.

What is cell membrane?

The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's interior from the outside environment. The cell membrane is made up of a semipermeable lipid bilayer. The cell membrane controls the transport of materials into and out of the cell.

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The number of nails picked up by an electromagnet be increased if more batteries are:

Independent variable = number of batteries

Dependent variable = amount of nails picked up.

The variables of experimentation are the components of the object on whom the experiment is performed or the components which impact the experiment. There are three types of quantities. These are dependent, independent, and control variables.

Independent variables are those that can not be controlled by the individual who is performing the experiment. The dependent variables can be modified or operated by the experimenter. Like, the number of nails can be controlled by the person.

Thus, the variables are:

Independent variable = number of batteries

Dependent variable = amount of nails picked up.

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