Answer:
Explanation:
Viruses are a limitation to cell theory.
According to cell theory, all cells arise from pre - existing cells. But viruses lack any membranes and do not show the characteristics of life unless they enter a living body and use its cell machinery to multiply.
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b)Their vision is better than their hearing.
c)Their hearing and vision are about the same.
d)Their hearing is better than their vision.
It is TRUE about most newborns’ hearing and vision that Their hearing is better than their vision. Correct Option is 4.
Most newborns have better hearing than vision. Newborn infants typically have a well-developed auditory system, allowing them to respond to sounds soon after birth. They can perceive a wide range of auditory stimuli and are sensitive to different frequencies and intensities of sound.
On the other hand, their visual system is not fully matured at birth, and newborns have limited visual acuity and color vision. Their ability to focus on objects and perceive details improves gradually over time as their visual system develops. Therefore, during the early stages, newborns generally have better hearing capabilities compared to their vision.
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Answer:B
Explanation: At birth, a newborn's eyesight is between 20/200 and 20/400. Their eyes are sensitive to bright light, so they're more likely to open their eyes in low light.
A controversial issue of toxicology is the use of chemical additives in food.
Food additives are substances intentionally added to foods for the purpose of preserving, enhancing or modifying their physical, chemical, biological or sensory properties without impairing their nutritional value. However, it is necessary to control the use of these substances, as ingestion of these substances may pose health risks.
Additives are found in most processed foods, such as cookies, breakfast cereals, soft drinks, jellies, artificial juices, candies and a host of other foods in the diet of Brazilians, especially children.
Thus, its consumption should be controlled, as the health risk is confirmed by a sum of scientific studies. The three main ills associated with excessive consumption of these substances are cancer, food hypersensitivity and attention deficit hyperactivity disorder.
Some audiences are even more vulnerable to consumption, such as pregnant women, the elderly, people with little food and children under three years. In the case of children the attention should be greater because the digestive and urinary systems are not yet fully prepared to process these substances.
The more industrialized the product, the more chemical additives it will have. The ideal is to prepare fresh products at home. However, as is often not possible, it is important that you read the label and choose the products with the least additives.
Independent: ____________
Dependent:___________
3. What is a negative control you should use to rule out alternative explanations for a positive result?
4. In Parts 2 and 4, you measured the diameter of the micronucleus using fluorescence microscopy and electron microscopy. How do the measurements compare? Which of the two types of microscopy above do you believe was most accurate? Why?
Phagocytosis queries are given detailed in the following way
Explanation:
1.Phagocytosis is a process wherein a cell binds to the item it wants to engulf on the cell surface and draws the item inward while engulfing around it.Phagocytosis differs from other methods of endocytosis because it is very specific and depends on the cell being able to bind to the item it wants to engulf by way of cell surface receptors. Phagocytosis won’t happen unless the cell is in physical contact with the particle it wants to engulf.
2.A hypothesis states a presumed relationship between two variables in a way that can be tested with empirical data. ... The cause is called the independent variable; and the effect is called the dependent variable.
Independent and Dependent Variable Examples. In a study to determine whether how long a student sleeps affects test scores, the independent variable is the length of time spent sleeping while the dependent variable is the test score. You want to compare brands of paper towels, to see which holds the most liquid.
3.A negative control is a control group in an experiment that uses a treatment that isn't expected to produce results. A positive control is a control group in an experiment that uses a treatment that is known to produce results.
A negative control is part of a well-designed scientific experiment. The negative control group is a group in which no response is expected. It is the opposite of the positive control, in which a known response is expected.
These two controls, when both are successful, are usually sufficient to eliminate most potential confounding variables: it means that the experiment produces a negative result when a negative result is expected, and a positive result when a positive result is expected.
4.Electron microscopes differ from light microscopes in that they produce an image of a specimen by using a beam of electrons rather than a beam of light. Electrons have much a shorter wavelength than visible light, and this allows electron microscopes to produce higher-resolution images than standard light microscopes.Microscopes are used to produce magnified images. ... light microscopes are used to study living cells and for regular use when relatively low magnification and resolution is enough. electron microscopes provide higher magnifications and higher resolution images but cannot be used to view living cells.
Fluorescence microscopy is used
methanogens, halophiles, and thermophiles. The methanogens are anaerobic bacteria that produce methane. They are found in sewage treatment plants, bogs, and the intestinal tracts of ruminants.
Answer:
Ahmed and Fatima, two teenage siblings, are fighting over the evening newspaper. Knowing Ahmed only wants the sports section and Fatima only wants the latest stock quotations, their mother takes the paper and gives each the section containing their news of interest. In the context of mediation, the mother arrived at a(n) integrative agreement.
Explanation:
In business studies, an integrative agreement can be described as a situation in which all the parties benefit from an action and are in win-win situation. An integrative agreement tends to find beneficial options for both the parties at dispute so that a mutual agreement can occur between them.
In the following scenario, Ahmed and Fatima's mother provided a solution which benefited both of them. Hence, it is an example of an integrative agreement.
Answer:
The major differences between murine and epidemic typhus are their infection mode.
Explanation:
Typhus is a fever disorder that can be endemic or epidemic in nature. Both disorders are pathological and sociologically similar. Endemic typhus is also called as murine typhus.
murine typhus includes several symptoms such as high fever, rashes on the trunk of the body, nausea, diarrhea, and vomiting and infects by the flea feces contact to cut or open wound.
Epidemic typhus is a similar disorder but with more serious symptoms, including hypotension, bleeding into the skin, delirium, and death and spread by infected body lice.
Thus, the major differences between murine and epidemic typhus are their infection mode.