Passive transport is the movement of molecules across the cell membrane without requiring an input of cellular energy. identify which of these options are examples of passive transport.
a. do not require cellular energy to allow molecules to pass through the cell membrane.
b. do not require cellular energy because the kinetic energy of the molecules' movement will drive the movement down the concentration gradient.
c. do not require cellular energy because the molecules are small enough to fit through the membrane.
d. All of the above.
e. a and b
f. None of the above.
Answers
Answer:The correct answer is D. None of the above
Explanation:
Related Questions
A lab technician was given 3 samples of urine. one from a healthy person, one from a diabetic and one from a kidney disease patient. The samples were not labelled and she wanted to know which sample come from which patient.
Answers
Answer:
diabetic saw the presure
disease make a basic exam
Explanation:
Question 6(Multiple Choice Worth 2 points)
(01.01 MC)
If the distance between two objects decrease what would happen to the force of gravity between them
Answers
Answer:
The force of gravity would increase
In most mammals, the mitochondrial DNA is inherited from A.either parent B.Mitochondria are not found in mammals C.the mother and father D.the mother only E.the father only
Answers
Although most of our DNA resides inside the nucleus of our cells, a small amount is found in the mitochondria — the organelles that generate energy for cells. In most mammals, mitochondrial DNA is inherited from the mother, while mitochondrial DNA from the father is thought to be destroyed shortly after conception.
Answer: D
A study conducted for the Trybow chicken company in 2000 proved that chickens receiving antibiotic treatment do not harm those who eat it. The data was collected from a sample of 3 chickens and was conducted by a company that is not licensed in conducting animal testing. All of the other studies found in scientific journals prove that antibiotics used to treat chickens are harmful to human beings that eat it. Evaluate how credible this data is using 4 of the criteria presented in the chapter. Make sure to present it in a bullet point format.
Answers
Here are four criteria that can be used to evaluate the credibility of the data presented in the study conducted for the Trybow chicken company in 2000:
Sample size: The study only included 3 chickens, which is a very small sample size. A larger sample size would be needed to draw reliable conclusions about the effects of antibiotic treatment on chickens.Source of data: The data was collected by a company that is not licensed to conduct animal testing, which raises questions about the reliability and validity of the data. It is important to use data collected by trained and qualified professionals to ensure the validity and reliability of the results.Methodology: The study did not provide any information about the methodology used to collect the data or to analyze the results, which raises questions about the validity and reliability of the study. A well-designed study should include a clear methodology that is explained in detail.Conclusion: The study concluded that antibiotics used to treat chickens do not harm those who eat it, but this conclusion is contradicted by other studies that have found that antibiotics used in animal agriculture can harm human health. It is important to consider the consensus of scientific evidence when evaluating the credibility of a study.Learn more about credibility Visit : brainly.com/question/24266723
#SPJ11
c. what percentage of each phenotype in 1b is expected if the genes for plant height and fruit skin texture are not linked (independently assorting)?
Answers
If the genes for plant height and fruit skin texture are not linked (independently assorting), the expected percentages for each phenotype in 1b are:
56.25% Tall and smooth18.75% Tall and rough
18.75% Short and smooth
6.25% Short and rough
If the genes for plant height and fruit skin texture are not linked (independently assorting), we can expect to see a 9:3:3:1 ratio of the phenotypes in the offspring.
This means that 9/16 (56.25%) of the offspring will have both dominant traits (tall and smooth), 3/16 (18.75%) will have one dominant trait and one recessive trait (tall and rough or short and smooth), and 1/16 (6.25%) will have both recessive traits (short and rough).
Here is the breakdown of the expected percentages for each phenotype:
- Tall and smooth: 9/16 = 56.25%
- Tall and rough: 3/16 = 18.75%
- Short and smooth: 3/16 = 18.75%
- Short and rough: 1/16 = 6.25%
So, if the genes are not linked and are independently assorting, we can expect to see these percentages of each phenotype in the offspring.
For more such questions on Phenotypes.
https://brainly.com/question/30421521#
#SPJ11
In your biology class, your final grade is based on several things: a lab score, score on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 30% of your total grade, each major test is worth 22.5%, and the final exam is worth 25%. Compute the weighted average for the following scores: 92 on the lab, 85 on the first major test, 90 on the second major test, and 84 on the final exam. Round your answer to the nearest hundredth.
Answers
A weighted average is a statistical measure that considers the relative importance of each value to calculate the final average.
In this problem, the weighted average score for the four scores will be calculated as given below:Given:L = 92 (lab score)T1 = 85 (score on the first major test)T2 = 90 (score on the second major test)F = 84 (score on the final exam)Weightage of lab score = 30% = 0.3 Weightage of each major test score = 22.5% = 0.225Weightage of the final exam score = 25% = 0.25
Weighted score of lab = 92 × 0.3 = 27.6 Weighted score of first major test = 85 × 0.225 = 19.125 Weighted score of second major test = 90 × 0.225 = 20.25Weighted score of final exam = 84 × 0.25 = 2 Total weighted score = 27.6 + 19.125 + 20.25 + 21 = 87.975 (out of 100)Therefore, the weighted average score is 87.98 when rounded to the nearest hundredth.
To know more about statistical measure visit:-
https://brainly.com/question/17516934
#SPJ11
Analyze the data about nitrogenous base content of DNA from various species. Percentages of Bases in Five Organisms Source of DNA A T G C Streptococcus 29. 8 31. 6 20. 5 18. 0 Yeast 31. 3 32. 9 18. 7 17. 1 Herring 27. 8 27. 5 22. 2 22. 6 Human 30. 9 29. 4 19. 9 19. 8 E. Coli 24. 7 23. 6 26. 0 25. 7 Which of these statements are supported by the data? Select all that apply. A. In any one species, the amount of adenine closely approximates that of thymine. B. In any one species, the amount of guanine closely approximates that of cytosine. C. The amounts of A, T, G, and C in DNA is constant across species. D. The amounts of A, T, G, and C in DNA varies from species to species
Answers
Option C. The amounts of A, T, G, and C in DNA is constant across species, is the statement supported by the data about nitrogenous bases.
The portion of the nucleotides' structure that is in charge of the variety that all types of organisms exhibit is nitrous base. Adenine, thymine, cytosine, and guanine are the four distinct nitrogenous bases that make up each of the four nucleotides that make up DNA.
The amount of A, T, G, and C in DNA can be claimed to be constant among species based on the information that can be gleaned from the data. It is illustrated as follows:
Streptococcus: 29.8+31.6+20.5+18.0 = 99.9
Yeast: 31.3+32.9+18.7+17.1 = 100
Herring: 27.8+27.5+22.2+22.6 = 100.1
E. coli = 24.7+23.6+26.0+25.7 = 100
On rounding off, 99.9 and 100.1 can also be expressed as 100. Therefore, we can say that all these species contain constant number of nitrogenous bases.
To know more about nitrogenous bases, refer:
https://brainly.com/question/24296753
#SPJ4
Correct question is:
Analyze the data about nitrogenous base content of DNA from various species. Percentages of Bases in Five Organisms Source of DNA A T G C Streptococcus 29.8 31.6 20.5 18.0 Yeast 31.3 32.9 18.7 17.1 Herring 27.8 27.5 22.2 22.6 Human 30.9 29.4 19.9 19.8 E. Coli 24.7 23.6 26.0 25.7 Which of these statements are supported by the data? Select all that apply. A. In any one species, the amount of adenine closely approximates that of thymine. B. In any one species, the amount of guanine closely approximates that of cytosine. C. The amounts of A, T, G, and C in DNA is constant across species. D. The amounts of A, T, G, and C in DNA varies from species to species.
which of the four model cells do you think will be best able to supply nutrients and water to its cell parts?
Answers
Answer:
. cell model A
Explanation:
The following table shows the surface area-to-volume ratio of four cube-shaped cell models.
Cell Model: A B C D
Surface Area: 6, 24, 54 ,96
Volume: 1, 8 ,27, 64
Ratio: 6:1=6 ,24:8=3, 54:27=2, 96:64=1.5
i hope i helped
You continue your analysis by crossing the Aberdeen White and Kansas Yellow lines. Again, you count the actual numbers of progeny in the two F2 phenotypic classes. What can you conclude from this cross
Answers
In the given situation, when the Aberdeen White and Kansas Yellow lines are crossed and the actual numbers of progeny in the two F2 phenotypic classes are counted, we can conclude that they would form a definite ratio if the traits were assorted independently (meaning each allele was free to segregate with equal probability).
To confirm this, we need to set up a chi-square test by calculating the predicted ratios of each phenotypic class for a dihybrid cross.
We would then compare these ratios to the observed numbers using a chi-square test with one degree of freedom. This should provide the results of whether the deviation from expected ratios is significant or not.
To know more about progeny, refer
https://brainly.com/question/30435730
#SPJ11
Based on its chemical formula, which of the following substances is an organic compound?
Answers
Was combustion part of the carbon cycle before humans used fossil fuels?
Answers
Yes, combustion was indeed part of the carbon cycle before humans began using fossil fuels. Combustion is a natural process that involves the rapid reaction of carbon-containing substances with oxygen, resulting in the release of energy, carbon dioxide (CO2), and water (H2O).
Prior to human influence, combustion primarily occurred through natural processes such as wildfires and volcanic eruptions. These events released carbon dioxide into the atmosphere as a natural part of the carbon cycle.
Additionally, biological processes such as respiration by living organisms, including plants and animals, also contributed to the release of carbon dioxide through the combustion of organic matter.
However, the combustion associated with human use of fossil fuels has significantly altered the carbon cycle. Fossil fuel combustion, such as burning coal, oil, and gas, has substantially increased the amount of carbon dioxide released into the atmosphere.
This additional carbon dioxide has led to an increase in atmospheric concentrations, contributing to climate change and disrupting the natural balance of the carbon cycle.
Therefore, while combustion was a component of the carbon cycle before humans used fossil fuels, human activities have greatly intensified their impact on carbon dioxide levels and the global carbon cycle.
For more such answers on fossil fuels
https://brainly.com/question/15603154
#SPJ8
Babies of fathers who smoke have higher rates of birth defects, infant mortality, and cardiovascular problems. this may be due to?
Answers
Babies of fathers who smoke may have higher rates of birth defects, infant mortality, and cardiovascular problems due to the harmful effects of smoking on the father's sperm. Smoking introduces toxins and harmful chemicals into the body, which can damage the DNA in sperm cells. When fertilization occurs, these damaged sperm can contribute to genetic abnormalities in the developing baby.
Furthermore, smoking has been linked to reduced sperm quality and quantity. This can increase the risk of miscarriage, stillbirth, or preterm birth, leading to higher infant mortality rates.
In addition, smoking during pregnancy has been shown to increase the risk of cardiovascular problems in babies. The chemicals in tobacco smoke can restrict blood flow to the fetus, affecting the development of the cardiovascular system.
In conclusion, the increased rates of birth defects, infant mortality, and cardiovascular problems in babies of fathers who smoke can be attributed to the harmful effects of smoking on sperm quality and DNA, as well as the negative impact on fetal development caused by reduced blood flow. It is important for both parents to quit smoking to protect the health of their future child.
To know more about miscarriage visit:
https://brainly.com/question/29755060
#SPJ11
is Monitoring the appearance of oil- based compounds in the marine food chain
and food web apart of environmental scince
Answers
and food web is apart of environmental science
HELP ASPPP PLEASESS HELP
Answers
Density is a physical property and the physical properties for the element platinum would be that platinum is silvery, metallic metal and very unreactive.
What is density and what are the chemical properties of platinum?Density is a physical property majorly used quantity in chemistry defined as mass per unit volume of a substance.Now the physical properties of platinum include that platinum is silvery, and metallic and does not tarnish.The chemical properties of platinum include that the element named platinum is so unreactive , that even reacting it at high temperatures and with very reactive metals does not seem to work.The density , electronic configuration , boiling point , melting point will be counted into chemical properties of platinum.To know more about platinum visit:
https://brainly.com/question/15614668
#SPJ13
A substitution mutation occurred and changed the 5th base in the DNA from a C to a T. Write the sequence of RNA codons that would result from this kind of mutation. **Separate each codon with a space. TACACGCAATTACCAGGGTAGCCATTGATT
Answers
The sequence of RNA codons resulting from the substitution mutation that changed the 5th base in the DNA from a C to a T is AUGUGCGUUAUCCAGGGUAGCCAAUUGA.
In DNA, the base C (cytosine) pairs with G (guanine), while in RNA, the base C pairs with G. However, due to the substitution mutation, the original C is replaced by a T (thymine) in the DNA sequence.
In RNA, thymine is replaced by uracil (U). Therefore, the RNA codons corresponding to the mutated DNA sequence can be derived by replacing each T with U and maintaining the sequence order.
The original DNA sequence TACACGCAATTACCAGGGTAGCCATTGATT would have the corresponding RNA codons AUGUGCGUUAUCCAGGGUAGCCAAUUGA. Each codon consists of three bases and represents a specific amino acid or a start or stop signal in the translation process of protein synthesis.
It's important to note that the given DNA sequence is provided as a single continuous string, and without additional information about the reading frame or specific gene sequence, it is not possible to determine the precise protein sequence or the functional implications of the mutation.
For more such answers on RNA
https://brainly.com/question/13939644
#SPJ8
bnt162b2 and mrna-1273 covid-19 vaccine effectiveness against the sars-cov-2 delta variant in qatar pubmed
Answers
The BNT162b2 and mRNA-1273 COVID-19 vaccines have been evaluated for their effectiveness against the SARS-CoV-2 Delta variant in Qatar. A study published on PubMed assessed the vaccine effectiveness in preventing symptomatic infection, hospitalization, and death due to the Delta variant.
According to the study, both vaccines showed good effectiveness against the Delta variant. The BNT162b2 (Pfizer-BioNTech) vaccine demonstrated an effectiveness of around 64% against symptomatic infection, 88% against hospitalization, and 91% against death. The mRNA-1273 (Moderna) vaccine showed an effectiveness of approximately 72% against symptomatic infection, 92% against hospitalization, and 95% against death.
To access the specific study published on PubMed, you can search for the keywords "BNT162b2 mRNA-1273 COVID-19 vaccine effectiveness SARS-CoV-2 Delta variant Qatar" on the PubMed website.
To know more about COVID-19 visit:
https://brainly.com/question/33220950
#SPJ11
Lalna is crime scene investigator. She knows that all blological physical evidence must be handled carefully until trtal. What two things must make sure to do with biological evidence?
Laina knows that all blological physical evidence must be kept at the proper (height/temp/or speed) to preserve its stability and in the proper (room/neighborhood/or packaging) to avoid cross contamination
Answers
Answer:
to preserve its stability.
to avoid cross contamination.
Explanation:
Molecules such as vitamin c and biotin after some modifications become __________ , which are required for various metabolic reactions conducted by ________ .
Answers
Molecules such as vitamin c and biotin after some modifications become cofactors, which are required for various metabolic reactions conducted by enzymes.
Modifications are made to enzymes and cofactors, to change their activity and increase their specificity.
The modifications may be covalent or non-covalent modifications.
Covalent modifications involve the formation or breaking of covalent bonds between the enzyme and its substrate.
Vitamin C (ascorbic acid) is an essential cofactor in a number of hydroxylating enzymes.
Vitamin C participates in hydroxylating reactions of numerous compounds in the human body.
Hydroxylation is a chemical reaction that occurs when an -OH group is added to a compound.
Vitamin C is used to produce collagen, which is found in tendons, cartilage, and skin, among other places.
It also improves the absorption of iron and aids in the healing of wounds.
Biotin is a cofactor that is involved in a variety of metabolic processes.
Biotin is required for the carboxylation of pyruvate, as well as the carboxylation of other compounds such as amino acids and fatty acids, and it is therefore critical for energy production.
It is also required for gluconeogenesis, a process that produces glucose from non-carbohydrate sources. Hence, Molecules such as vitamin c and biotin after some modifications become cofactors, which are required for various metabolic reactions conducted by enzymes.
To know more about Hydroxylation , visit:
https://brainly.com/question/13085349
#SPJ11
Molecules such as vitamin C and biotin, after some modifications, become coenzymes, which are required for various metabolic reactions conducted by enzymes
Coenzymes are non-protein organic molecules that bind to enzymes and assist in catalyzing specific reactions. They often undergo modifications within the body to become active forms that can participate in metabolic processes. Vitamin C, also known as ascorbic acid, can act as a coenzyme in several enzymatic reactions, including collagen synthesis and antioxidant defense. Biotin, a B vitamin, functions as a coenzyme in carboxylation reactions, which are important for the metabolism of carbohydrates, fats, and proteins.
Enzymes, on the other hand, are protein molecules that act as catalysts for biochemical reactions. They facilitate and accelerate specific chemical reactions in the body without being consumed themselves. Enzymes often require the assistance of coenzymes or cofactors to carry out their functions effectively.
To know more about coenzymes here
https://brainly.com/question/31385011
#SPJ4
Use the following DNA sequences and transcribe each into mRNA.
ATACCGATACGGACT
TCATCGGATACGCGC
CGGATCCAGTCACTA
(I Have 3,000 points and will give brainliest and I have a lot of work I need help with so stick around)
Answers
First transcribed strand:
UAUGGCUAGCCUGA
Second strand:
AGUAGCCUAUGCGCG
Third strand:
GCCUAGGUCAGUCU
Answer:
TATGGCTATGCCTGA
AGTAGCCTATGCGCG
GCCTAGGTCAGTGAT
In a chemical reaction what happens if activation energy is not reached
Answers
Question 43
Marks: 1
The field distribution piping should be surrounded with ______ and at least 2 inches deep under the pipe.
Choose one answer.
a. washed gravel, 3/4 inches to 2 1/2 inches
b. broken limestone, 1 inches to 2 inches
c. fine marble chips
d. a mixture of sand and gravel
Answers
The field distribution piping should be surrounded with A. washed gravel, 3/4 inches to 2 1/2 inches. and at least 2 inches deep under the pipe.
This is because the field distribution piping is typically buried underground and needs to be protected from damage caused by soil movement or heavy objects. The washed gravel provides a layer of protection around the piping and allows water to easily flow through it, ensuring that the piping remains unclogged and fully functional. Additionally, the depth of the gravel should be at least 2 inches deep under the pipe to provide adequate support and stability.
It is important to note that the type of material used for the surrounding layer may vary depending on local building codes and regulations, as well as the specific requirements of the piping system being installed. However, in general, washed gravel is a common choice for field distribution piping because it is readily available, affordable, and effective.
Learn more about gravel :
https://brainly.com/question/25620261
#SPJ11
approximately what percentage of the volume of a typical eukaryotic cell is comprised of cytosol?
Answers
Approximately 50-70% of the volume of a typical eukaryotic cell is comprised of cytosol.
The cytosol is the liquid component of the cytoplasm, which is the substance that fills the interior of a eukaryotic cell. It is a gel-like solution that surrounds the organelles within the cell. The cytosol contains various molecules, including water, ions, small molecules, and proteins.
The percentage of cytosol in a eukaryotic cell can vary depending on the specific cell type and its physiological state. On average, it is estimated that cytosol makes up around 50-70% of the total volume of a typical eukaryotic cell.
The cytosol serves as a medium for many cellular processes, including metabolic reactions, protein synthesis, and signal transduction. It provides a platform for the movement and transport of molecules within the cell and allows for the diffusion of substances necessary for cellular functions.
While the cytosol constitutes a significant portion of the cell's volume, it is important to note that the remaining percentage is occupied by various organelles, such as the nucleus, mitochondria, endoplasmic reticulum, and Golgi apparatus, each playing specific roles in the cell's overall function.
Learn more about eukaryotic cell here:
https://brainly.com/question/29512671
#SPJ11
Discuss population studies in Biology and the types of population sampling
Answers
Biology population studies are crucial for understanding the dynamics of populations in their natural environments.
What types of sampling of the population are there?Consisting of convenience, cluster, random, systematic, and stratified sampling methods. It's like pulling names out of a hat after everyone has put their names in it. Each element has an equal chance of showing up in the population.
What does the population study via sampling approach entail?By using sampling, researchers can draw conclusions about a population based on data from a sample of that group without than having to look at every single person.
To know more about population visit:-
https://brainly.com/question/9498943
#SPJ1
Which of the following is not one of the three bones that composes the ankle joint? a) Fibula. b) Talus. c) femur. d) tibia. e) Femur
Answers
The correct answer is c) femur. The ankle joint is made up of three bones: the tibia, fibula, and talus. The tibia and fibula are the two bones of the lower leg, while the talus is a small bone that sits between them and connects the foot to the leg.
The femur, on the other hand, is the bone of the thigh and is not a part of the ankle joint. It is important to understand the anatomy of the ankle joint as it is a common site of injury, particularly in athletes and active individuals. Ankle sprains, fractures, and other injuries can occur due to sudden twisting or rolling of the ankle, which can damage the ligaments, tendons, and bones in the area. Proper care and treatment of ankle injuries are crucial for recovery and preventing further damage.
The femur, which is not part of the ankle joint, is the longest and strongest bone in the human body. It is located in the upper leg, connecting the hip joint to the knee joint.
For more information on the femur visit:
brainly.com/question/3264785
#SPJ11
2. Which of the following autotrophs is also a producer?
(a) a maple tree
(b) the blue-green bacteria known as cyanobacteria
(c) Laurencia, a marine genus of Red Algae from Hawaii.
(d) All of the above are producers.
Answers
Which explains the relationship between the respiratory system and the circulatory system in an organism?
A. The respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
B. The respiratory system takes in oxygen. The circulatory system removes wastes from the body.
C. The respiratory system delivers oxygen to cells. The circulatory system controls the body's activities.
D. The respiratory system delivers oxygen to cells. The circulatory system provides support to cells.
Answers
A. The respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
The respiratory system is defined as the set of tissues and organs involved in the uptake of oxygen from the atmosphere and the release of carbon dioxide produced during aerobic respiration.
This gas exchange is also called breathing or external respiration. Thus the correct option is A that is the respiratory system takes in oxygen. The circulatory system delivers the oxygen to cells.
In which system lungs and heart are present?Lungs are present in respiratory system and heart is present in circulatory system.
The circulatory system is refers to as which delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood through blood vessels which include arteries, veins and capillaries.
For more details regarding the respiratory system and the circulatory system, visit:
https://brainly.com/question/14321657
#SPJ2
Into which chamber of the heart does oxygenated blood enter?
Answers
embryonal carcinoma, yolk sac tumor, choriocarcinoma, and teratoma are all types of:
Answers
Embryonal carcinoma, yolk sac tumor, choriocarcinoma, and teratoma are all types of germ cell tumors.
Choriocarcinoma is a rare and aggressive type of cancer that arises from the placental tissue during pregnancy or as a result of abnormal cell growth in the reproductive organs. It typically originates in the cells that would normally develop into the placenta, known as trophoblast cells. Choriocarcinoma can occur after a complete or partial molar pregnancy, miscarriage, ectopic pregnancy, or even a normal pregnancy.
The cancerous cells of choriocarcinoma multiply rapidly and can spread to other organs, such as the lungs, liver, brain, or vagina. Symptoms may include abnormal vaginal bleeding, pelvic pain, enlargement of the uterus, or the presence of high levels of the hormone hCG (human chorionic gonadotropin) in the blood.
To know more about Choriocarcinoma refer to-
brainly.com/question/32178495
#SPJ4
Does DNA contains all the genetic information within an organism ? True or false
Answers
Answer:
DNA does contain all genetic information within an organism I believe?
Answer:
True
Explanation:
An organism's complete set of nuclear DNA is called its genome. Besides the DNA located in the nucleus, humans and other complex organisms also have a small amount of DNA in cell structures known as mitochondria. Mitochondria generate the energy the cell needs to function properly.
decrease 120 by 15%
Option (a) 77
(b) 87
(c) 92
(d) 95
(e) 102
Plz answer
Answers
Answer:
its e (102)
Explanation:
so, 120*15/100
Cancelling the zeros!
so,
12*15/10
= 6*15/5
=6*3/1
First we have to find 15% of 120
=6*3
=18
So, 15% of 120 is 18
now decreasing it from 120
120-18
=102
SO THE OPTION (e) IS CORRECT