Answer:
honestly, it is all up to your preference if you are the tutor or the teacher. It depends on if the student wants to go really in-depth with their work and memorize all the small details, or to know the basics
Explanation:
Often, complex molecules are described in terms of their atomic masses. But what is more relevant in biology is how they take up space. (For proteins, their shapes are particularly important.) Let's see if we can get an approximate idea of the physical size of a protein molecule by doing various estimations.
An important molecule in the internal mechanisms of cells is Actin. This is measured as having a mass of about 42 kDa (= 42,000 Daltons, where 12 Daltons is defined as the mass of a carbon atom). Let's see if we can estimate how big it is using very crude estimates. Of course eventually we will want to know how big it actually is and what its shape is, but getting a scale would help us determine what measurement tools might be appropriate.
In order to estimate the size of Actin, we'll first make an estimate of how many atoms it has, then, using the average size of an atom, we'll consider different models of how it might be arranged to get an idea of its size.
A. We could look up the chemical composition of Actin to get exactly how many atoms it contains. But let's see how "the estimation game" does instead. Actin is a biological molecule, so it's probably made up of mostly carbon, oxygen, nitrogen, and hydrogen, with a few other stray atoms tossed in. Use an "average sized biological atom" to estimate the number of atoms in Actin.
B. Given the radius of an average atom let's consider a simple model of Actin. Suppose Actin is tightly packed into a sphere or cube. For estimation purposes we could model each atom as a cube. If you built up a cube of the total number of atoms you found in A, what would be the dimensions of the cube?
C. Look up Actin and find its actual size. How did the really simple model do? Can you draw any conclusions about the structure of Actin from these results?
Answer:
b
Explanation:
The correct answer is option (B) Given the radius of an average atom let's consider a simple model of Actin. Suppose Actin is tightly packed into a sphere or cube. For estimation purposes we could model each atom as a cube. If you built up a cube of the total number of atoms you found in A, what would be the dimensions of the cube.
What is an atom?
An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers.
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Which statement about protein hormone synthesis is FALSE. First exclude the four statements that are true. Which statement about protein hormone synthesis is FALSE. First exclude the four statements that are true. The RNA used for protein hormone synthesis is a copy of the gene for the protein hormone. Protein hormones are synthesized on free ribosomes. The cell invests energy to move protein hormones through the cell. Protein hormones are packaged into vesicles for movement through the cell. Protein hormones often travel through the bloodstream in order to reach a target cell.
Answer:
The correct answer is - Protein hormones are synthesized on free ribosomes (false).
Explanation:
The majority of the hormones that are produced from endocrine glands are produced are steroids however some of the hormones are made up of peptide or proteins.
Protein hormone synthesis uses RNA, is a copy of the gene for this hormone, this is packaged into vesicles with the help of ER and Golgi bodies for movement through the cell and reaches to its target cell by traveling through the bloodstream. mRNA is transcribed from DNA in order to produce protein. These hormones are produced according to the mRNA coding from amino acids in the cell.
In horses, the Overo gene, Ov, produces a white splotch pattern on the coat. The overo phenotype is seen only when a horse has one Ov copy, Ovov. Horses with two Ov copies, OvOv, die soon after birth and are called white overo because they are completely white. Horses with no Ov copies are solid colored, ovov. The Leopard complex gene, Lp, shows incomplete dominance and controls white spotting. One Lp allele, Lplp, produces the leopard phenotype, in which there are spots everywhere. Two Lp alleles, LpLp, produce the fewspot phenotype, in which the horse is mostly white with colored spots. A horse that is both overo and leopard is called pintaloosa, and these horses are spotted with splotches. A horse that is overo and fewspot is considered fewspot because the white areas from Lp is indistinguishable from the white from Ov. Horse with overo phenotype. Overo Horse with solid coloration. Solid Horse with leopard phenotype. Leopard Horse with pintaloosa phenotype. Pintaloosa Horse with fewspot phenotype. Fewspot Suppose that 16 pairs of pintaloosa horses have one offspring per pair. How many of each phenotype would be expected
The question is incomplete. Here is the complete question.
In horses, the Overo gene, Ov, produces a white splotch pattern on the coat. The overo phenotype is seen only when a horse has one Ov copy, Ovov. Horses with two Ov copies, OvOv, die soon after birth are called white overo because they are completely white. Horses with no Ov copies are solid colored, ovov.
The Leopard complex gene, Lp, shows incomplete dominance and controls white spotting. One Lp allele, Lplp, produces the leopard phenotype, in which there are spots everywhere. Two Lp alleles, LpLp, produce the fewspot phenotype, in which the horse is mostly white with colored spots.
A horse that is both overo and leopard is called pintaloosa, and these horses are spotted with splotches. A horse that is overo and fewspot is considered fewspot because the white areas from Lp is indistinguishable from the white from Ov.
Suppose that 16 pairs of pintaloosa horses have one offpring per pair. How many each phenotype would be expected? Determine the number out of 16 expected for each phenotype. Only count phenotypes of offspring expected to live past one week of age.
overo:
white overo:
fewspot:
Answer: Overo: 2
White overo: 0
Fewspot: 3
Explanation: Pintaloosa is a "combination" of overo and leopard, so the pair's genotype is OvovLplp.
To cross a pair, use Punnet Square and to facilitate, use the square for each characteristics:
Punnett Square For overo and white overo:
Ov ov
Ov OvOv Ovov
ov Ovov ovov
Analysing this Punnett square, notice that there are 2 individuals who will carry the genotype for overo (Ovov) phenotype. So, 2 out of the 16 pair will have an overo phenotype.
Since white overo is recessive (ovov) and doesn't survive past birth, there will be zero horses with that phenotype.
Punnett Square For leopard and fewspot:
Lp lp
Lp LpLp Lplp
lp Lplp lplp
From this square, notice that there are 1 individual who is fewspot. However, a horse that is overo and fewspot is considered fewspot, so for the 16 pair, 3 out 16 will be fewspot.
you live in Florida, and you have decided the prepare your home for hurricane season. which of the following actions would least help you achieve your goal?
storing several gallons of water in closed, plastic containers
filling your refrigerator with eggs, meat and other foods that require cooking
covering your windows with plywood
purchasing a battery powered cell phone charger
filling your refrigerator with eggs, meat and other foods that require cooking
The following action that would the least help you achieve your goal is filling your refrigerator with eggs, meat, and other foods that require cooking. The correct option is B.
What is a hurricane?A hurricane is a tropical cyclone with winds. It forms with great speed. It destroys home and trees, and cause human destruction too. Furthermore, it is caused by warm water, heavy rain, or heavy winds.
In some areas, generally in seashore areas, the hurricane is normal. The wind moves with great speed with water and makes a round whirl.
During a hurricane, the food should be kept in a safe place not in the fridge, because during a storm, the electricity went off, and the food will be destroyed.
Thus, the correct option is B. filling your refrigerator with eggs, meat, and other foods that require cooking.
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3
The true density of aluminum is 2.7 g/cm3; your experimental calculation was 2.4 g/cm2. What is the percent error?
A. 1%
B. 11%
C. 0.11%
D. 0.10%
Answer:
B 11%
Explanation:
[tex] \frac{2.7 - 2.4}{2.7} \times 100 = 11.11[/tex]
Which statement describes how diffusion works?
Molecules always move from inside of the cell to outside of the cell.
Molecules always move from areas of high concentration to low concentration.
Molecules always move from areas of low concentration to high concentration.
Molecules always move from of outside the cell to inside of the cell.
Answer:
Molecules always move from inside of the cell to outside if the cell
Answer:
Molecules always move from areas of high concentration to low concentration.
Explanation:
Describe the energy transformations that occur through plants that you
consume?
Answer:
Explanation:
Photosynthesis is the process plants use to convert energy from the sun into usable energy for their cells. Plants use the light energy of the sun, carbon dioxide, and water to make glucose (a sugar), and oxygen. The energy of the sun is captured and stored in the bonds between atoms in glucose molecules
True or false aerobic respiration produces more atp than anaerobic respiration
Acid-water solutions taste _[blank 1] . Acids react with _[blank 2]_ to produce salts and water.
Which option correctly fills the blanks in the passage?
O bitter; metals
O sour; bases
O sour, oxygen
O bitter; bases
Answer:
Sour; bases
Explanation:
I did the quiz, and this was the correct answer for mine.
explain how the nitrogen and carbon cycles contribute to the usable supplies of these macromolecules.
Describe a living system that is not an organ system or an ecosystem.
Answer:
fungi
Explanation:
If you had a patient suffering from cholelithiasis, a possible non-surgical treatment could include:
Group of answer choices
extracorporeal shock-wave lithotripsy
cholecystectomy
choledocholithotomy
temporary colostomy
transgenic plants are plants having?
a)no gene
b)Genes in transposition
c)Genes with no function to perform
d)Genes of another organism
Which best describes the relationship between two species and a niche?
If two species have the same niche, one species will always become extinct.
Two species are able to occupy the same niche in the same habitat.
Two species cannot occupy the same niche in the same habitat.
If two species have the same niche, one species will always move.
Answer:
If two species have the same niche, one species will always move.
Explanation:
In biology, ecological NICHE refers to how the species of an organism performs in its ecosystem i.e. its role. Niche includes the reproduction, feeding pattern, prey, etc. However, if there are two species occupying the same niche, one species will always move.
One of the species, usually the weak one, will always move because occupying the same niche by two species will inevitably lead to competition, which causes one of the species to go elsewhere when these resources are limited.
Answer:
C.) Two species cannot occupy the same niche in the same habitat.
Explanation:
it is the answer
What does the Thermosphere represent.
If a solution has a pH of 7, it is said to be
Answer:
NeutralExplanation:
A solution with a pH of 1 to 6 is acidic
A solution with a pH of 8 to 14 is alkaline .
A. Urganelles of the endomembrane system
The various parts of the endomembrane system serve different functions in the cell. In this activity, you will identify the roles of each part of the endomembrane system. Drag each function to the appropriate bin.
a. protein synthesis
b. protein modification and sorting
c. macromolecule digestion
d. lipid synthesis
e. autophagy
f. cisternal maturation
g. calcium ion storage
h. poison detoxification
1. Smooth ER
2. Rough ER
3. Golgi apparatus
4. Lysosomes
B. Sites of protein synthesis
All proteins are synthesized by ribosomes in the cell. Some ribosomes float freely in the cytosol, while others are bound to the surface of the endoplasmic reticulum. Most proteins made by free ribosomes function in the cytosol. Proteins made by bound ribosomes either function within the endomembrane system or pass through it and are secreted from the cell. Which of the following proteins are synthesized by bound ribosomes?
A. Lysosomal enzyme
B. Insulin
C. ER protein
D. DNA polymerase
E. Ribosomal protein
C. Pulse-chase experiments and protein location
Scientists can track the movement of proteins through the endomembrane system using an approach known as a pulse-chase experiment. This experiment involves
the "pulse" phase: Cells are exposed to a high concentration of a radioactively labeled amino acid for a short period to tag proteins that are being synthesized.
the "chase" phase: Any unincorporated radioactively labeled amino acids are washed away and large amounts of the same, but unlabeled, amino acid are added.
Only those proteins synthesized during the brief pulse phase are radioactively tagged. These tagged proteins can be tracked through the chase period to determine their location in the cell.
The data below were obtained from a pulse-chase experiment in which cells were examined at different times during the chase period. The numbers represent the radioactivity (measured in counts per minute) recorded at each of the indicated sites. The higher the number, the greater the radioactivity.
Time ER Golgi Cytoplasm Lysosomes Extracellular Space
3 minutes 162 7 21 5 4
20 minutes 73 88 17 10 8
60 minutes 9 35 14 112 13
120 minutes 11 23 18 151 10
Based on these data, what is the most likely function of the cells in this experiment?
a. detoxification
b. muscle contraction
c. phagocytosis
d. secretion
Answer:
A) 1. Smooth ER: d. lipid synthesis, g. calcium storage, h. poison detoxification
2. Rough ER: a. protein synthesis
3. Golgi apparatus: b. protein modification and sorting, f. cisternal maturation
4. Lysosomes: c. macromolecule digestion, e. autophagy
B) A. Lysosomal enzyme; B. Insulin; C. ER protein
C) c. phagocytosis
Explanation:
In eukaryotic cells, the smooth ER (smooth endoplasmic reticulum) is defined as a subset of the endomembrane system of the endoplasmic reticulum responsible for many cellular functions, including the synthesis of lipids and hormones (steroid hormones), the elimination of harmful metabolic compounds and the storage of calcium ions. The Rough ER is a series of connected flattened sacs that bound to the ribosomes and functions during the synthesis of proteins. The Golgi apparatus is another membrane organelle responsible for transporting, modifying, and packaging lipids and proteins. The lysosomes are also membrane organelles that are found in animal cells, these organelles contain digestive hydrolytic enzymes used to break down different types of molecules. Ribosomes are structures formed by both RNA and proteins which are found within all cells. The ribosomes play a major role during the synthesis of proteins, specifically during the translation from messenger RNAs (mRNAs) to proteins. These structures link amino acidic residues to form polypeptide chains. Finally, phagocytosis is a type of endocytosis where the cell engulfs a particle by using its plasma membrane, thereby producing a phagosome.
What human activity uses the most water worldwide? a. industry b. wastewater c. wells d. agriculture
Answer:
D. agriculture
Explanation:
Agriculture is perhaps the most water-intensive industry on the planet.
Agriculture is the human activity that utilizes the most water on a global scale. To put it another way, watering crops. The activity of producing plants and cattle is known as agriculture. Agriculture was a significant factor in the establishment of sedentary human civilization, since it enabled humans to dwell in cities by creating food surpluses from tamed species.Learn more:https://brainly.com/question/1863824?referrer=searchResults
Which word best explains the changes shown in these photographs?
Answer:
different skin color shorter longer hair
Explanation:
Answer:
assimilation
Explanation:
i took the test
Beetles break down e remain of dead animals. How does this action benefit plants?
Answer:
nutrients to soil
Explanation:
Help ASAP! 10 points and brainy .
Answer:
Erosion
Explanation:
When Soil is moved from the normal ground into water is called erosion, it can be caused by a lot of different things. (but thats a whole different topic)
Hope this helped :)
Answer:erosion
Explanation:
Which element is the basis for all living things and can combine with other elements in many ways ?
Answer:
Carbon is the basis for all living things.
Explanation:
Carbon are the great source of livelihood for all living things
Plants roots create holes and tunnels in the soil allowing infiltrations to happen more easily. However, if trees and plants are stripped way, the soil can become dry. What process will increase if trees and plants are absent in the area?
Answer:
This question lacks options, but it can be answered based on general knowledge. The answer is SOIL EROSION
Explanation:
Soil erosion is a process whereby the top layer of the soil gets washed away by certain agents including water (from excessive rainfall) and wind etc. According to this question, plants roots create holes and tunnels in the soil allowing infiltrations to happen more easily. This means that the presence of plants in a soil makes the soil permeable to water and air.
However, in the absence of any plant form on a soil; the soil become exposed directly to this agents, becomes less infiltrable due to low penetration by roots, becomes less compact and held together etc. All these occurrences promotes the process of SOIL EROSION to occur on such a soil more.
What is one important role that ocean waters have in heating Earth?
CO
absorb and transport solar energy
transport nutrients and waste
create and emit solar energy
O wear away rock and soil
Answer:
Absorb and transport solar energy
Explanation:
I hope this helps!
One important role that ocean waters have in heating Earth is to absorb and transport solar energy.
What is a ocean?The ocean is a major heat sink for the Earth, meaning it absorbs and stores large amounts of heat from the sun. Sunlight penetrates the surface of the ocean and is absorbed by the water, causing it to warm up. This warm water then circulates through the ocean, carrying heat energy from the equator towards the poles. The ocean's currents also help to distribute heat around the globe, affecting global climate patterns.
Additionally, the ocean plays a crucial role in regulating the temperature of the atmosphere through the process of evaporation. As the sun heats the ocean's surface, water molecules evaporate and rise into the atmosphere. This process releases heat energy into the atmosphere, which helps to warm the air.
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In tomato plants, the production of red fruit color is under the control of an allele RR. Yellow tomatoes are rrrr. The dominant phenotype for fruit shape is under the control of an allele TT, which produces two lobes. Multilobed fruit, the recessive phenotype, have the genotype tttt. Two different crosses are made between parental plants of unknown genotype and phenotype. Use the progeny phenotype ratios to determine the genotypes and phenotypes of each parent.
Cross 1 progency 3/8 two-lobed, red
3/8 two-lobed, yellow
1/8 multilobed, yellow
Cross 2 progency 1/4 two-lobed , red
1/4 two-lobed, yellow
1/4 multirobed red
1/4 multilobed yellow
Answer and Explanation:
Due to technical problems, you will find the correct answer and complete explanation in the attached file
Help PLEASE
and don't even think about deleting this questions you moderators this is a HOMEWOrK question that is being GRADED AS A TEST because of the difficulty and time consumption of it I've already had scuffles with 4 moderators now and would appreciate if I don't have another
Answer:
A. A= or RNA, B= cell fuel and support, C= galactose and glycogen,
D= nucleic acids and fatty acids.DNA
Which plant organ is responsible for supporting the weight of the plant?
A. the flower
B.the stem
C. the leaves
D. the roots
The plants are the autotrophs that produce food and are composed of roots, leaves, stems, and flowers. Each part of the plant plays a crucial role in the development and support of the plant.
The correct answer is:
Option D. the roots
The functions of roots are:
1. Roots are the vascular part of the plant, which generally grows underground.
2. Roots perform various processes like anchorage, absorption of water and minerals, and conduction of nutrients.
3. Roots also bear the weight of the plant and provide structural support.
Thus, the correct answer is roots.
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The genetic code is _______________because more than one codon codes for the same amino acid.
Answer:
Degenerate
Explanation:
The genetic code is degenerate because there are more than one codon code for the same amino acid.
2 organelles that work together to maintain homeostasis
Answer:
mitochondria and ribosome
Explanation:
They botch create energy and work together for the body to able to maintain homeostatic. HOPE THIS HELPED
The scientific process is most to what
Answer:
The scientific process is most similar to following a recipe.
