Waxes are lipids
A wax is a simple lipid which is an ester of a long-chain alcohol and a fatty acid. The alcohol may contain from 12-32 carbon atoms. Waxes are found in nature as coatings on leaves and stems.
Wax is a lipid that is an ester of a long-chain fatty acid and alcohol. Alcohol may have between 12 and 32 carbon atoms. Wax is a substance that naturally coats stems and leaves.
Fats and oils make up the family of organic substances known as lipids. These molecules produce a lot of energy and are in charge of several bodily processes. The following list includes some crucial properties of lipids. Lipids are fatty or oily nonpolar molecules that are kept in the body's adipose tissue.
A diverse class of substances known as lipids is mostly made up of hydrocarbon chains. Lipids are organic compounds that are high in energy and supply that energy for several living activities. A family of chemicals known as lipids is distinguished by their solubility in nonpolar solvents and insolubility in water.
Therefore, wax is a lipid.
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A group of students has performed an experiment to study the ideal temperature for the maximum activity of biological enzymes. Enzymes are specific to their environment; in other words, they work best at a specific pH and specific temperature. Which graph represents optimum enzyme activity at approximately 37 degrees Celsius?
Please refer to figures below.
Answer;
The first graph represents such an enzyme.
Explanation;
This is because the enzyme demonstrates greatest activity at approximately 37 °C but then the activity starts to decrease due to the denaturing of the enzyme.
As the temperature increases, so does the rate of reaction. But very high temperatures denature enzymes. The graph shows the typical change in an enzyme's activity with increasing temperature. The enzyme activity gradually increases with temperature up to around 37 ºC, or body temperature. Then the activity decreases above 37 ºC, because above this temperature the enzymes will denatured.
___________ is the attraction of water molecules to one another, while _________ is the attraction of water molecules to other polar substances.a: adhesion; cohesionb: cohesion; adhesionc: crossed outd: surface tension; adhesion
Correct answer: B). Cohesion; adhesion
Cohesion is defined as the force of attraction between the same substances while that of adhesion is defined as the force of attraction between the different type of substances.
Cohesion is the force that is known to hold the hydrogen bond together in order to create surface tension of water molecules. While that of adhesive force is responsible for pulling the water molecules towards the other molecules.
Hence, the correct answer would be ''Cohesion; adhesion''
Meiosis is used to make sperm and eggs. Why did the splitting process have to happen twice?
Which scientist conducted the first psychological experiment?
What is the energy conversion that occurs in cellular respiration?
Chemical energy in glucose is converted to light energy.
Light energy is converted to chemical energy in glucose.
Energy in glucose is converted to packets of stored energy in the organism.
Packets of stored energy are converted to chemical energy in glucose.
Which statement is the best example of pseudoscience?
Scientists have observed many constellations in our universe.
Mary thinks her astrological sign, Leo, is a perfect fit for her personality.
Satellites found in space record images of events that take place on the Earth.
The employees at the observatory use telescopes to study the stars.
Answer:
B
Explanation:
Mary thinks her astrological sign, Leo, is a perfect fit for her personality.
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Deer need food and water to survive. What are food and water for the deer population?
A. Carrying capacity
B. Limiting factor
C. Population growth
D. Scarce resources
Answer:
B. Limiting factor
Explanation:
The snapping turtle shown above, lives in a small farm pond, where its major prey is largemouth bass. In turn, the bass primarily eat emerald minnows. This snapping turtle weighs 40 pounds. If the pond has 10 mature snapping turtles of this size, how many pounds of minnows are required to support them? [Use the 10% law across each trophic level.]
A) 400
B) 4,000
C) 40,000
D) 400,000
What processes can transform metamorphic rock into sediment?
A.
weathering and erosion
B.
heat and pressure
C.
compaction and cementation
D.
crystallization and solidification
What processes can transform metamorphic rock into sediment?
A.
weathering and erosion
which of the following does not show the law of conservation of mass?
A. 24g of Mg burn in 32g O2 to produce 56g of MgO
B. 24mL of Mg burn in 32mL O2 to produce 56mL of MgO
C. 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO
D. 1 atom of Mg reacts with 1 atom of O to produce a unit of MgO that contains 2 atoms
Answer:1. B
2. D
,3. A
4. B
5. A
6. B
7. D
8. B
9. B
10. A
11. D
12. B
13. D
14. C
15. B
Explanation:
A) Chromosome B) DNA nucleotide C) Codon D) Gene Place the components in order, from smallest to largest. A) A-B-D-C B) B-C-D-A C) C-D-B-A D) D-C-B-A
Answer: The correct answer is- B) B-C-D-A that is DNA nucleotide- Codon- Gene- Chromosome.
DNA ( deoxyribonucleic acid) is considered as the genetic material of living organisms. It is made up of small units called nucleotide ( which contains deoxyribose sugar, phosphate, and nitrogenous base).
A sequence of three nucleotide is called codon ( which codes for a particular amino acid).
Different codons are present in a gene, which is a segment of DNA coding for a particular protein.
Finally, genes are present on chromosome ( thread like structure composed of DNA).
Thus, option B) correctly depicts the given components in order, from smallest to largest.
What connects the axon of one neuron with the dendrite of another neuron to replay messages?
If purple flower color is dominant and red flower color recessive, how many phenotypes are possible in offspring of homozygous purple crossed with homozygous red?
1 2 3 4 I put 1.
Answer: The correct answer is 1 phenotype.
Dominant trait ( depicted by capital letter) masks the expression of recessive trait ( depicted by small letter).
As per the question, purple flower color is dominant and red flower color is recessive. Let 'P' allele corresponds to purple color and 'p' corresponds to red color.
The possible genotypes for purple flower is 'Pp' and 'pp' whereas for red flower is 'pp'.
Genotypes of parent plants, which are homozygous for purple and homozygous for red are PP and pp respectively.
When these plants are crossed, they result into heterozygous purple (Pp) offspring that is phenotype of all offsprings in first generation is Purple
Refer punnett square.
Too much logging in the Oyamel fir forests could lead to the eastern monarch butterfly going extinct because _______. a. the entire population of the species spends winter in Oyamel c. the winters are too cold in Oyamel b. the butterflies breed in the Oyamel fir trees d. the butterflies feed on the Oyamel fir tree
Answer: a. the entire population of the species spends winter in Oyamel.
Monarch butterfly cannot survive in extreme climatic conditions. These butterflies spend winter months in Oyamel fir forest of Mexico. Oyamel forest situated in mountain hills provides an ideal climate for their survival. Here, the temperature ranges from 0 to 15 degree Celsius. If the temperature is low, the monarch butterflies uses their fat reserves. The dense canopy of trees in Oyamel fir forest drives heat from the ground at night and protect these butterflies from rain, wind and snow. The supply of excess of water as in the case of water logging condition can make trees susceptible to diseases and pests. In winter majority of monarch butterfly concentrate over the same region of Oyamel fir forest. Such water logging conditions will make the forest unsuitable for survival and further may lead to extinction of these butterflies.
Answer:
A
Explanation:
Large quantities of proteins modified by the Golgi apparatus exit the cell through the process of
The answer is; exocytosis
The secretory vesicles that pinch off from the Golgi apparatus move across the cytoplasm to the cell membrane. The bilipid layer of the vesicle fuses with that of the cell membrane and the contents in the vesicle are expelled to the outside of the cell. Exocytosis is especially significant in excretory cells such as those that produce mucus in the buccal cavity.
Carbon dioxide is released when which of the following phenomena occur? nitrogen fixation decomposition photosynthesis burning fossil fuels
Jane waters her plants every morning. Which path does the water take to be a part of photosynthesis?
roots to leaves
leaves to roots
stems to roots
An example of parallel choices in a key is _____.
A. flower color is red; AA. flower color is blue
A. object can fly; AA. object is black
A. animal has 4 legs; AA. animal has 4 teeth
Answer;
A. flower color is red; AA. flower color is blue
An example of parallel choices in a key is, A. flower color is red; AA. flower color is blue.
Explanation;
-Dichotomous key allow the user to determine the identity of items using a sequence of alternative choices. Dichotomous keys always give two, mutually exclusive choices in parallel statements. The pair of statements is referred to as a couplet and each 1/2 of a couplet is a lead. At each couplet of a dichotomous key the user is presented with two choices about a specific character present in the group of organisms, a specific character state is described for each lead.
-Sometimes the characters are quantitative (i.e., measurements) and sometimes the characters are qualitative (e.g., texture). As the user makes a choice about a particular characteristic of an organism s/he is led to a new branch or couplet of the key. Each couplet provides characteristics that become progressively more specific until the final step is reached and identification is made.
A cell is placed in a solution containing a higher solute concentration than the interior of the cell. What effect would this have on the cell?
a. The cell would divide.
b. The cell would rupture.
c. The cell would shrivel.
d. The cell would swell.
A cell in a hypertonic solution, which has a higher solute concentration outside than inside, will lose water and shrivel as a result of osmosis.
Explanation:When a cell is placed in a solution that has a higher solute concentration than the interior of the cell, it is in a hypertonic solution. In this scenario, the cell will lose water to the surrounding environment because water moves from areas of lower solute concentration to areas of higher solute concentration, a process known as osmosis. Consequently, the cell will shrivel as it loses water.
Thus, the correct answer to what effect a hypertonic solution would have on a cell is:
c. The cell would shrivel.This is because the hypertonic solution has a higher concentration of solutes compared to the cell’s interior, causing water to exit the cell to try to balance the solute concentrations, resulting in the cell shrinking or crenating.
Grass → Rabbit → Weasel → Fox → Fungi Which population would most likely increase if the weasel was removed from the food chain?
Answer:
The rabbit population would increase.
Explanation:
The weasel is the rabbit's predator in the food chain shown in the question above. If the weasels disappeared from the environment, the rabbits would be left without predators, which would allow the population of rabbits to grow, since the collections would die only from natural causes and not from predatorism. Thus, the rabbits' birth rate would be higher than the mortality rate, causing the population to grow.
Acupuncture is an alternative medicine that uses wire-thin needles inserted by a trained practitioner into specific points in the body. This ancient form of pain relief and stimulation is said to benefit patients by blocking channels which practitioners claim allow pain to travel within the body. This practice became more widely recognized and used after a New York Times reporter wrote in 1971 of a positive experience with it after surgery.
Those who doubt the effectiveness of this treatment for pain attribute the pain relief to a placebo effect: if a patient believes something will reduce their pain, they will experience some relief. The National Institutes of Health says that acupuncture relieves pain and reduces nausea and vomiting, although it is unclear how it works. The few adverse effects reported are due to improperly sterilized needles or improper delivery, making this still a fairly low risk option. For anyone considering acupuncture, they should first research its effectiveness for their specific condition.
Summary of statements published by the National Institutes of Health
Which statement best explains the scientific claim about how acupuncture treatment reduces pain?
a) Acupuncture is an alternative medicine that uses wire-thin needles inserted by a trained practitioner into specific points in the body.
b) Those who doubt the effectiveness of this treatment for pain attribute the pain relief to a placebo effect: if a patient believes something will reduce their pain, they will experience some relief.
c) This ancient form of pain relief and stimulation is said to benefit patients by blocking channels which practitioners claim allow pain to travel within the body.
d)For anyone considering acupuncture treatment, they should first research its effectiveness for their specific condition.
During which three phases of mitosis are individual chromosomes no longer visible?
When astronauts brought back rock samples from the Moon, the minerals present were mostly the same as those found on Earth. Can you think of reasons why this might be so? Would you expect minerals on Mars or Venus to be the same, or at least very similar, to those on Earth?
The minerals present in moon rock samples are mostly the same as those found on Earth because the Moon and Earth share a common history, believed to have been formed out of the debris from a massive collision with Earth around 4.5 billion years ago. For this reason, we can expect some similarities in mineral composition. For Mars and Venus, similarities to Earth's minerals may exist, but there could also be significant differences due to the unique geological history and environmental conditions of each planet.
The mineral compositions of celestial bodies are determined by their formation processes and the conditions they have been subjected to over time. The reason the Moon's minerals are similar to Earth's is that it likely originated from Earth's material. This common origin would naturally lead to similar minerals forming on both bodies. Mars and Venus, however, formed independently and have different environmental conditions and geological histories. Mars, for example, has a different atmosphere and has been exposed to different conditions than Earth, which would influence its mineralogy. Similarly, Venus's extreme temperatures and atmospheric pressure would also likely result in a different set of minerals. Nevertheless, all rocky planets in our solar system formed from the same protoplanetary disk, which means there are certainly materials and minerals that they have in common.
what process is shown? A. endocytosis B. phagocytosis C. pinocytosis D. exocytosis
Endocyotosis was incorrect.
Answer:
D. exocytosis
For the DNA base sequence GGG what is the mRNA codon? What is the tRNA codon that binds to the mRNA codon and what is the correct amino acid that is coded by the base sequence? ...?
What is the main function of carbohydrates
The main function of carbohydrates is to provide energy to the body, particularly through a simple sugar called glucose. They also serve as energy storage molecules and play a significant role in forming certain structural components, like the cell walls of plants.
Explanation:The main function of carbohydrates is as a source of energy for the body. Carbohydrates, a type of macromolecule, are an essential part of our diet, with natural sources being grains, fruits, and vegetables. These sources provide energy through glucose, a simple sugar that is a component of starch and a common ingredient in many staple foods. In addition to providing energy, carbohydrates serve other important functions in humans, animals, and plants. For instance, certain types of carbohydrates such as disaccharides, starch, and glycogen also serve as energy storage molecules. Moreover, carbohydrates play a vital role in certain structures, such as the cell walls in plants.
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The study of biology is important because it focuses on what?
Answer:
Explanation:all livings things
An increase in the concentration of ATP in a muscle cell is a direct result of which life function? ...?
Final answer:
The increase in ATP concentration in muscle cells is primarily associated with muscle contraction, powered by mitochondria within the cells. During intense exercise, ATP can also be produced anaerobically, resulting in lactic acid as a byproduct.
Explanation:
An increase in the concentration of ATP in a muscle cell is a direct result of the life function known as muscle contraction. ATP, or adenosine triphosphate, is the primary energy currency of the cell and facilitates various bodily functions including muscle contractions, nerve signal transmission, and the absorption of nutrients in the gastrointestinal tract.
Muscle cells are equipped with a high concentration of mitochondria to produce ATP, ensuring that the demand for energy during muscle activity can be met. During intense exercise, when there is not enough oxygen for aerobic respiration, muscle cells produce ATP anaerobically, leading to the production of lactic acid alongside the ATP.
When evaluating the difference between baked potatoes and French fries, the two areas most different are: Calories and cholesterol Calories and sodium Protein and carbohydrates Protein and sodium
In DNA molecules nucleotides bond together according to the nitrogenous bases. Which of the following correctly describes how nitrogenous bases bond together?
A). Purines bond to other purines
B). Purines bond to pyrimidines
C). Purines and pyrimidines can bond with themselves and each other
D). Pyrimidines bond to pyrimidines
Final answer:
OPTION B.
In DNA, purines (adenine and guanine) bond to pyrimidines (cytosine and thymine), which maintain the uniform structure of the DNA double helix.
Explanation:
In DNA molecules, nucleotides bond together according to the nitrogenous bases. The correct description of how nitrogenous bases bond together is that purines bond to pyrimidines. This means that the two purines, adenine (A) and guanine (G), with a double-ring structure, will bond with the pyrimidines, cytosine (C) and thymine (T), which have a single-ring structure. Specifically, adenine pairs with thymine, and cytosine pairs with guanine. This bonding maintains the uniform shape of the DNA double helix by keeping the distance between the two DNA chains constant.