What is iodine solution changing from amber-yellow to blue-black an indication of?
a.the presence of reducing sugars or monosaccharides
b.the presence of proteins or peptide bonds
c.the presence of lipids or fats
d.the presence of starches or complex carbohydrates submit for grading save and finish later?
Iodine solution is prepared by dissolving iodine in a solution of potassium iodide. This iodine reagent is amber-yellow colored. When this iodine solution is added to starch solution which is a polysaccharide, the yellow colored reagent changes to blue-block color. This color change is due to the formation of a charge transfer complex between starch and the triioidide present in iodine solution. So, the correct answer is d. the presence of starches or complex carbohydrates
What conclusion would be MOST appropriate about the genetic variation between humans and the three apes as illustrated by the phylogenetic tree? A) Genetic variation between all four organisms is non-existent. B) The genetic variation between all four organisms is about the same. C) The genetic variation between humans and orangutans is the greatest. D) Humans branched off from the other three animals due to great genetic variations.
Answer:
The genetic variation between humans and orangutans is the greatest.
Explanation:
Humans and orangutans are farthest from each other in the tree, indicating the greatest biomolecular differences or genetic variations. The branches tell us that there are genetic differences; we cannot say from the tree that the amount of differences are equal.
The four visual cues are most associated with the part of the brain known as the ____.
The occipital lobe of the brain is associated with the four visual cues which are color, form, movement, and depth. This part helps in interpreting the visual information from the eyes.
Explanation:The four visual cues are most associated with the part of the brain known as the occipital lobe. This part of the brain is at the back of the head and is primarily involved in vision processing. It interprets visual cues from the eyes, transforming light and color information into images.
The four key visual cues processed by the occipital lobe include color, form, movement, and depth. These cues help us to understand and interact with the world around us in a meaningful way.
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All animals can probably trace their lineage to a common ancestor that lived in the _____.
Which genetically engineered hormone is used to control glucose levels in humans? insulin flu shot penicillin human growth hormone
Answer:
The correct answer is insulin.
Explanation:
Insulin refers to a hormone, which gets secreted or discharged from the pancreas. When the levels of glucose in the bloodstream elevates, the insulin makes the liver to transform glucose into glycogen and makes fats tissues and cells of the muscles to consume glucose. This is how the genetically engineered insulin has an application in controlling the level of glucose in the blood in the individuals suffering from diabetes.
The least amount of atp is produced in which stages of cellular respiration
The least amount of ATP is produced in the Krebs cycle of cellular respiration. This stage produces only two molecules of ATP.
What are the different stages of cellular respiration?There are three different stages of cellular respiration are there:
Glycolysis: Breakdown of glucose into pyruvate.The Krebs cycle: Pyruvate gets converted into acetyl-CoA which enters TCA.Electron transport chain: The product of the TCA cycle enters into the electron transport chain.The process of glycolysis produces 4 ATP and 2 NADH. But 2 ATP is spent which leads to the net production of 2 ATP and 2 NADH. The process of the Krebs cycle involves the breakdown of acetyl-CoA into 2 ATP, 8 NADH, and 2 FADH2. While the process of the electron transport chain produced 34 molecules of ATP with the help of the conversion of all energetic carriers.
Therefore, the least amount of ATP is produced in the Krebs cycle of cellular respiration. This stage produces only two molecules of ATP.
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Describe how comparing early development can help scientists learn about the relatedness of species. give an example!
Talking of early development we are referring to the embryonic stage of development. The closer similarity of their embryos shows a relationship between the organisms. For example an adult chimpanzee and an adult human being look so different and on the other hand their embryos look so much alike.
Comparing early development in species helps to understand their relatedness by identifying homologous structures stemming from common ancestry. Embryonic similarities such as gill slits that appear in all vertebrates demonstrate shared evolutionary paths. These comparisons aid in the construction of phylogenetic trees to visualize evolutionary relationships.
Explanation:Understanding Species Relatedness Through Early Development
Comparing the early development of different species can reveal their evolutionary relationships. Scientists look for homologous structures, which are features that are similar due to shared ancestry. An example of this is the presence of gill slits in the embryos of all vertebrates, including humans, which indicates a common ancestral origin. Moreover, scientists use embryology, the study of an organism's development from embryo to adult, to find these connections. The development patterns can help distinguish between homologies and analogies, the latter being similarities due to convergent evolution rather than common ancestry.
For instance, while bats, birds, and insects all have evolved wings for flight, the embryonic origin and structural makeup of these wings differ significantly. Birds and bats have homologous structures in their wings suggesting a closer evolutionary relationship, whereas insect wings are analogous and do not imply close relatedness. Such comparisons enable researchers to construct phylogenetic trees, illustrating the evolutionary pathways of different species.
Process that requires oxygen is called
April wants to add _____ to her salad, because the food is a naturally rich source of omega-3 fats.
The answer is walnuts. Wall nuts are rich in vitamin E, omega – 3 fats and antioxidants; eating or consumption of walnuts everyday may support brain health and increase young adult’s inferential reasoning. It is recommended that an ounce or 28 grams of nuts per day is good, it is as much as the size of a palm of a hand.
Voltage-activated channels are channels for which a change in the voltage across the membrane alters their ____.
Answer:
Permeability
Explanation:
Voltage-activated channels are channels for which a change in the voltage across the membrane alters their PERMEABILITY.
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Which behavior in a client with schizophrenia demonstrates the client's cognitive inability to appropriately process data from external stimuli?
How does budding in yeast resemble fission in paramecium? How does it Differ?
Binary fission and budding are both the procedures of asexual reproduction. They are both very identical; however, they do possess certain differences. They are regarded as the most basic methods of asexual reproduction.
Binary fission takes place majorly in unicellular species. When the species has to reproduce its cell goes via the phases of mitosis. However, when it attains cytokinesis it divides into two distinct organisms.
Budding is another kind of asexual reproduction. In this process, a new species called bud originates from the original organism. As soon as the bud possess the tendency to survive on its own it distinguishes itself from the original organism.
It takes place in both the multicellular organisms and unicellular organisms. However, unlike binary fission, it takes place from an unequal division of the reproducing organism.
Describe the occasion in which the bacterial dna withstood conditions
(last word) a study found that the incidence of skin cancer increases along with the amount of time people work under fluorescent light, leading some people to conclude that fluorescent lighting is a cause of skin cancer. but further analysis found that people who work in offices, where fluorescent light is common, suffer more sunburn on their vacations than other workers. the sunburns, not the fluorescent light, were the cause of the higher incidence of skin cancer. the original conclusion illustrates
List three reasons that can help explain why it is important to distinguish different tastes?
Which communities do early colonizers form?
Early colonizers result in the formation of communities.
Answer:
The correct answer is ecological communities.
Explanation:
The early colonizers result in the generation of ecological communities. The formation of these communities starts with a few animals and plants, which afterward develops into a complexity. They become self-perpetuating or stable in the form of a climax community. Their succession results in a change in the ecosystem, that is, the established species with the surrounding.
An opening in the dermis through which perspiration reaches the surface of the skin is called
An opening in the dermis through which perspiration reaches the surface of the skin is called pores.
Explanation:
Skin is the second largest organ of the human body. The skin in order to regulate the body temperature expels the liquid in the form of sweat. This sweat is normally not pure water. It is a mixture of water with minerals and salts. This process is called as the perspiration. Skin has got sweat glands which is present throughout the body.
This sweat gland through the small holes called pores that expel the sweat. Normally we sweat through arm pits, face, palm of hands and sole of the foot. Women tend to sweat more than men. A normal pure sweat is odorless hence distinctive odor in the sweat can help us identify certain differences the body is undergoing .
A patient with which type of burn should always get professional medical help?
The function of nad+ is to select one:
a. cause the release of energy to adjacent cells when energy is needed in aerobic conditions.
b. hasten the release of energy when the cell has been deprived of oxygen.
c. carry hydrogen atoms and electrons.
d. block the release of energy to adjacent cells.
e. convert the potential energy of the proton gradient into the chemical energy in atp.
The function of NAD+ is to carry hydrogen atoms and electrons. The correct option is C.
What is NADH?Nicotinamide adenine dinucleotide (NAD) plus hydrogen (H) is referred to as NADH. It occurs naturally in the body and contributes to energy production. The body generates NADH, which is used to produce energy.
This word is used to refer to the same molecule's reduced and oxidized versions. The oxidized form of NAD+ is one in which it has lost an electron. As the molecule's reduced form, NADH receives the electron that was lost by NAD+.
The powerhouses of the cells, the mitochondria, are where ATP, the energy currency, is made. Every cell in your body has mitochondria, which function as little engines or energy makers.
Thus, the correct option is C.
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Skulls can reveal many things about our hominid ancestors. What aspect of hominids is not related to skull anatomy?
A. What they ate.
B. Their hair and skin color.
C. Whether they stood upright.
D. The shape and size of their brain.
The answer is B.
Choice A is wrong because what they ate is how the skull is shaped and how the skull uses itself to find and eat food.
Choice C is wrong because it went over that in the Gizmos activity
Choice D is wrong because their brain was in their skull to help shape how the skull looked like.
The correct answer is - B. Their hair and skin color.
The hair and skin color of the hominids is not related to the shape and size, or rather the anatomy of the skull. The development of hair and skin color is actually dependent on the surrounding environment, since it can be used for camouflage, for protection of cold, or protection of the sun, but it has nothing to do with the bone structure of the skull.
The anatomy of the skull is defined by the eating habits, the way of motion, the size and the shape of the brain.
2. On which date does the Antarctic Circle have 24 hours of daylight? (1 point)June 21
March 21
September 21
December 21
3. When energy is transferred to air, what happens to the particles of air? (1 point)They move slower.
They move faster.
They cool down.
none of the above
Answer:
2. December 21
3. They move faster.
Explanation:
2. The midnight sun or polar day is a natural phenomenon observable in the north of the Arctic Circle and south of the Antarctic Circle, consisting of that, on dates close to the summer solstice, the Sun is visible 24 hours a day.
3. The energy makes the air particles move faster, they collide with others that are at a lower temperature, that move more slowly. As they collide, fast particles yield some of their energy to slower ones. These in turn collide with other adjacent particles. This process continues until the energy is extended to all the particles of the air that was initially at a lower temperature. Finally they all reach the same kinetic energy and consequently the same temperature.
List three things that happen to air when it enters the nasal cavity. what are cilia?
Although the reactions of the calvin cycle are not directly dependent on light, they usually do not occur at night. why?
The Calvin cycle does not directly depend on light, but it relies on the products of the light-dependent reactions in photosynthesis. Therefore, it usually does not occur at night.
Explanation:The Calvin cycle, which is the process by which plants convert carbon dioxide into glucose, does not directly depend on light. However, it usually does not occur at night because it relies on the products of the light-dependent reactions in photosynthesis. These reactions occur during the day when sunlight is available, and their products, such as ATP and NADPH, are necessary for the Calvin cycle to take place.
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Pain at specific trigger points along the neck and back is associated with the condition of ______
Answer: Pain at specific trigger points along the neck and back is associated with the condition of knots .
Explanation:
Pain at specific trigger points along the neck and back is associated with the condition of knots .
Knots refers to collection of tense and contracted muscles, when we pressed or moved the pain spread.
For example, trigger point may be in our shoulder but pain may be shoot up when pushed.
Select all that apply. All cells have similar structures, including _____. a plasma membrane vacuoles cell wall cytoplasm chloroplasts protoplasm NEXT
The nurse has provided instructions to a client who will receive alteplase for the treatment of acute myocardial infarction. the nurse determines that teaching was effective if the client states that the main action of alteplase is what?
Enzymes need certain environmental conditions in order to function properly. what happens when enzymes are heated to a high temperature?
When enzymes are heated to a high temperature, they can denature, losing their structure and function. Similarly, extreme pH values can also cause denaturation of enzymes.
Explanation:Enzymes need certain environmental conditions in order to function properly. When enzymes are heated to a high temperature, they can denature, losing their three-dimensional structure and function. This is because high temperatures can break the chemical bonds within the enzyme's active site, making it less well-suited to bind substrates. Enzymes also function optimally within a certain pH range, and extreme pH values can also cause denaturation of enzymes.
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Which type of microscope is needed to view a virus in the laboratory?
When a patient is dying, he or she may experience regression. this is most accurately defined as:?
which arrows represent photosynthesis and cellular respiration?
3rd arrow represents photosynthesis and 4th is cellular respiration.
What is cellular respiration?Cellular respiration is the process by which cells break down glucose and other organic molecules to release energy in the form of ATP (adenosine triphosphate). It is a metabolic process that occurs in the cells of all living organisms and involves a series of biochemical reactions that convert the chemical energy stored in glucose into a more usable form of energy (ATP).
The process of cellular respiration occurs in three stages: glycolysis, the Krebs cycle (also known as the citric acid cycle), and oxidative phosphorylation (also known as the electron transport chain). Cellular respiration is essential for life as it provides the energy needed for cells to carry out their functions and maintain homeostasis.
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