Starch is a carbohydrate biomolecule composed of amylose and amylopectin, with a coiled and branched structure respectively, made up of D-glucose units linked by glycosidic bonds.
Starch is a type of biomolecule known as a polysaccharide, which is a carbohydrate. It is composed of two types of molecules: amylose and amylopectin. Amylose is a linear polysaccharide made entirely of D-glucose units joined by \a-1,4-glycosidic linkages and has a coiled structure resembling a spring, which can trap iodine molecules, leading to a characteristic blue-violet color upon iodine testing. Amylopectin, on the other hand, is a highly branched molecule with a-1,4 glycosidic linkages in the linear chain and a-1,6 glycosidic linkages at the branching points. These structural differences between amylose and amylopectin contribute to the properties of starch, which serves as the main source of dietary energy in humans and is also broken down by organisms to produce glucose used for energy and biomass.
A Xw+m+Xwm female was mated to a XwmY male. Out of 1000 total F1 progeny there were 230 flies that were otherwise wild type with white eyes and 240 flies that were otherwise wild type with miniature wings. What is the distance between the genes for eye color and wing length?
Final answer:
In a genetic cross of Drosophila flies, a calculation based on the number of recombinant offspring indicates that the genes for eye color and wing length are A. 47 map units apart.
Explanation:
The distance between the genes for eye color and wing length in Drosophila can be calculated by looking at the number of recombinant offspring produced in a genetic cross. Since we know that the traits for eye color and wing size are X-linked, we need to account for the fact that males are hemizygous, meaning they only possess one allele for an X-linked trait, which in this case is white eye color (X^w) and miniature wings (m).
Given that a female with genotype X^wm+X^wm was mated to a male with genotype X^wmY, the recombinant offspring are those that have a combination of traits that are not found in either parent. These are the flies with white eyes and wild-type wings, and those with red eyes and miniature wings.
In this scenario, there are 230 flies with white eyes and wild-type wings and 240 flies with red eyes and miniature wings out of 1000 total progeny. The sum of recombinants is 230 + 240, which gives us 470 recombinant offspring. To find the genetic distance in map units, we take the number of recombinant offspring (470) and divide by the total number of offspring (1000), then multiply by 100 to convert to a percentage:
(470 / 1000) × 100 = 47%
This means the genes for eye color and wing length are 47 map units apart.
The eruption of Mt. Pinatubo in the Philippines
a) caught the human population unaware, giving no prior signs of activity.
b) affected only local, island ecosystems.
c) produced aerosols that blocked the sun and resulted in a drop in global temperatures.
d) produced large amounts of sulfur dioxide but few aerosols.
Final answer:
The eruption of Mt. Pinatubo in 1991 (option c) produced aerosols that significantly blocked sunlight and lowered global temperatures, resulting in widespread ecological and economic consequences. Pre-eruption alerts enabled evacuations, saving lives despite the substantial damage.
Explanation:
The eruption of Mt. Pinatubo in the Philippines c) produced aerosols that blocked the sun and resulted in a drop in global temperatures. This occurred in 1991 and was one of the largest eruptions in over a century. The volcanic activity sent billions of tons of magma, ash, sulfur dioxide, and particulates into the atmosphere, causing widespread ecological and economic devastation. The impact was not merely local as it influenced global temperatures, creating a volcanic winter by cooling the Northern Hemisphere by 1°C. Additionally, prior alerts and monitoring had enabled evacuation, saving many lives despite the extensive damage caused.
what is the difference between the biological meaning of adaptation and the common meaning of adaptation
Adaptation is a word that can exist as different contextual meaning.
The biological meaning of adaptation refers to how organisms are better able to fit into their surrounding environment ensuring survival and reproductive success.
While
the generalized meaning of adaptation has to do with our behavioural changes to enable us tolerate some particular conditions.
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ASAP!!!! What is the function of the organelle identified as #6 in the picture (it is mostly brown, folded over, and is in the lower right part of the cell)?
A) movement
B) houses the cells DNA
C) house the digestive enzyme
D) packages proteins for transport out of the cell
Answer:
The correct answer is option D. packages proteins fr transport out of the cell.
Explanation:
The given image is a model of cell that shows all the organelles present in the cell. The #6 is the golgi apparatus that is a brown, folded and present at the lower part of the cell.
The golgi apparatus plays an important role in cell. It is the site of modifying, packaging and transport of the proteins out of the cell by the prcess of the exocytosis.
Thus, the correct answer is option D. packages proteins for transport out of the cell.
what are two organic functional groups in a phospholipid molecule?
___plants/factories use the force of water to generate electricity.
A. Combustion
B. Coal
C.Beta Ray
D. Hydroelectric
E. Oil
AB. all of the above
AC. none of the above.
basking in the sun
swimming
increasing or decreasing activity level
These are all activities a cold-blooded reptile may do to maintain
A) homeostasis. B) body weight. C) peer dominance. D) blood sugar levels.
Correct answer: A). Homeostasis
Homeostasis is the tendency to maintain a constant internal environment. The body maintains homeostasis for many factors in addition to temperature.
All mammals and birds are same, i.e they maintain homeostasis as they are warm-blooded animals. However, reptiles or the cold-blooded animals maintain their internal body temperature by basking in the sun.
Three plants were tested under Red, Green and Yellow light. The growth of the plant was measured in centimeters.
What is the independent variable?
A fold in rock that bends upward into an arch is called a(n) a. anticline. b. syncline. c. plateau. d. canyon.
Answer: a. anticline
An anticline is a folded rock that bends upwards into an arch. The anticline rock is formed by initially flat rock that attains convex shape from upwards attaining an arch shape. In the process of formation of anticline rock, the older rocks gets deposited in the core region of the rock. Anticline rock formation is indicative of oil reservoir underneath. It is a source of natural gas, hydrocarbon oil like petroleum.
music question down below
Answer:
Strings
Explanation:
Band is a group of blowing instruments if that makes any sense
the inscription on a marble gravestones become harder and harder to read over time. this is caused by ?
A. chemical weathering
B. frost wedging
C. evolution
D. mechanical weathering
what role does tRNA play in translation
It link the correct amino acids together
Why are people not able to scuba dive to the deeper parts of the ocean?
what are the components of a phospholipid
The components of a phospholipid are two hydrophobic fatty acid tails and a hydrophilic head consisting of a phosphate group attached to a glycerol molecule.
Phospholipids are essential molecules that form the basis of cellular membranes, displaying an amphiphilic characteristic. Each molecule has a distinctly structured head and tail. The head contains the hydrophilic (water-attracting) phosphate group (-PO4-3) and glycerol; this is where interaction with the aqueous environment occurs. Meanwhile, the tails consist of two fatty acids that are hydrophobic (water-repelling), preferring to avoid water. This unique structure facilitates the formation of a lipid bilayer in biological membranes, where the tails face inward, shielded from water, and the heads face the aqueous environment on either side of the membrane. Cellular membranes formed by phospholipid bilayers are critical as they maintain cellular integrity and control the movement of substances in and out of the cell. Modifications at the phosphate group, such as the addition of choline or serine, can further influence the properties and functions of the phospholipid.
Chemical processes store and release _____ in the bonds of molecules.
Explanation:
A bond formed by sharing or transfer of electrons is known as a chemical bond. Since, atoms in a chemical bond combine with each other through a chemical process as exchange of electrons has taken place.
So, there will be chemical energy present between the bonds of chemical compound.
For example, bond between K and Cl is ionic and it will have chemical energy as this bond is formed by transfer of electrons.
Therefore, we can conclude that chemical processes store and release energy in the bonds of molecules.
HALP VERY IMPORTANT PLZ GIVE GOOD ANSWER
Doing labs involves more than just following the steps of the scientific method true or false?
What proof is there behind evolution?
The evidence for evolution is supported by molecular evidence, fossil evidence, and evidence from living species.
Explanation:The evidence for evolution is compelling and extensive. Looking at every level of organization in living systems, biologists see the signature of past and present evolution. Darwin dedicated a large portion of his book, On the Origin of Species, to identifying patterns in nature that were consistent with evolution, and since Darwin, our understanding has become clearer and broader.
In terms of molecular evidence, scientists have confirmed conclusions about evolution by studying molecules and DNA. For example, by analyzing DNA sequences or amino acid sequences, molecular clocks can be used to determine how closely species are related to each other. The fewer the differences, the less time has passed since the species split and began evolving into different species.
In addition, fossil evidence also supports evolution. Fossils provide a record of organisms that have lived in the past, and studying them has revealed how organisms have changed over time. Furthermore, comparing the anatomy, embryos, and DNA of modern organisms provides further evidence for evolution.
Sulfur dioxide _____.
creates a reddish-brown haze in the sky
is a secondary air pollutant
has an irritating odor and is colorless
is relatively harmless to the environment
Answer:
C) has an irritating odor and is colorless
Explanation:
Sulfur dioxide is a colorless gas with a strong, irritating odor. It is a secondary air pollutant, meaning that it is not emitted directly into the air but is produced when primary pollutants react with other substances in the atmosphere. Sulfur dioxide can create a reddish-brown haze in the sky, but it is generally considered to be relatively harmless to the environment.
music question down below
Answer:
B (Second one)
Explanation:
some enzymes may be used to stop a reaction from moving forward
true or false
a chemical reaction producing energy for a cell is
a. Embden-Meyerhof Pathway
b. Glycolysis
c. Production of ATP occurs in the mitochondria in eukaryotes or on the plasma membrane of bacteria
d. All of the above
Plants need carbon dioxide in order to survive. Plants get this gas from , which is something all organisms need.
Answer:
the answer is air
Explanation:
which parts are the same in all nucleotides? which part is different
Which is a carbohydrate monomer
you are doing an experiment outside on a sunny day you find the temperature of some sand is 28 degress Celsius you also find the temperature of some water is 25 degrees Celsius explain the difference in temperatures/6947257/eea30378?utm_source=registration
The temperature of the rock is higher than that of the water because the specific heat capacity of the water is more than rock.
Specific Heat Capacity:It is the amount of heat energy required to increase the temperature of 1 kg of a substance 1°C.If the specific heat capacity of a substance is higher, then it needs more heat energy to raise its temperature.The specific heat capacity of the water is more than rock.Therefore, the temperature of the rock is higher than that of the water.
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Which part of a neuron contains the nucleus?
axon
cell body
dendrite
myelin sheath
neural impulse
The nucleus of a neuron is located in the cell body, or soma, which is the central part of the neuron and holds other vital organelles.
Explanation:The part of a neuron that contains the nucleus is the cell body, also referred to as the soma. The nucleus is the control center of the neuron and is where genetic material is housed. Surrounding the nucleus, the cell body also contains other important organelles, such as mitochondria, which are crucial for providing energy to the neuron. Dendrites are the parts of the neuron that receive nerve impulses from other cells, and they are connected to the cell body. The axon is another extension from the cell body that transmits nerve impulses away from the neuron to other cells or to muscle fibers or glands.
List three reasons that snow predictions made by meteorologists are sometimes incorrect. Explain your response.
Answer:
The following are the three reasons due to which sometimes the snow predictions made by the meteorologists are incorrect:
a. Over-dependency on computers and not performing field works.
b. Sometimes the presence of pollutants in the air makes weather forecasting tougher.
c. In the majority of the situations, the meteorologists based their results on probability, and thus, chances of errors upsurges at certain times.
How is the Burmese python impacting the Everglades ecosystem?
Answer:
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abiotic factors that best describe a coniferous forest.
A gray wolf’s scientific name is Canis lupus. Which taxonomic groups are represented by “Canis Lupus”?
A. Phylum
B. Genus and species
C. Order and genus
D. Group and species
the answer is B i did the test before
The taxonomic group that is represented by “Canis Lupus" is Genus and species. The correct option is B.
What is taxonomy?Taxonomy is the science of naming, describing, and classifying organisms, and it encompasses all of the world's plants, animals, and microorganisms.
The practice and science of categorization or classification is known as taxonomy. A taxonomy is a classification scheme, particularly a hierarchical classification, that organizes things into groups or types.
Taxonomy processes include characterization, identification, and classification. Organisms are classified into kingdoms, phylums, classes, orders, families, genera, and species.
"Canis Lupus" belongs to the taxonomic group Genus and species. Taxonomy employs hierarchical classification to assist scientists in understanding and organizing the diversity of life on our planet.
Thus, the correct option is B.
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Compare the sexual and asexual reproduction methods in plants.