As the cell radius increases, the surface area increases as the radius squared, but the volume increases as the radius cubed (much faster). Therefore, as the cell size increases, the surface area to volume ratio decreases.
Cell proliferation reduces the surface area to volume ratio. This is because as a cell grows, its volume (its internal contents) increases faster than its surface area (its cell membrane).
As cells grow larger, the surface area to volume ratio decreases dramatically, similar to an agar cube. Larger cells have to transport substances across membranes, but they deliver a larger volume and a proportionately smaller surface area.
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What do mitochondria make?
Answer:
It produces energy for the cell. That energy is called ATP or adenosine triphosphate
Explanation:
Answer:
Mitochondria are membrane bound cell organelles mitochondrion singular that generate most of the chemical energy needed to power the cell's biochemical reactions Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate ATP
Hope this helps!
Which of the following is a cause of the ocean levels periodically rising and then falling?
A The slight tilt of the Moon
B The force of gravity from the Moon
The convection within Earth's mantle
The revolution of Earth around the Sun.
Answer: B
Explanation:
please help me, I'm from Vietnam you can translate
Answer:
What does it say? I can't read it well
Explanation:
Hypothetically, if a whole population was identical, could it evolve and why?
No because of the whole population was identical they would not have genders and would not be able to reproduce. Reproduction is essential to evolution
Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, which develop from similar embryonic tissues. These structural similarities are an example of ________. Structures as different as human arms, bat wings, and dolphin flippers contain many of the same bones, which develop from similar embryonic tissues. These structural similarities are an example of ________. the evolution of similar appearance as a result of common function homology the evolution of common structure as a result of common function convergent evolution
Answer:
homology.
Explanation:
These similarities in structural are an example of homology because human arms, bat wings, and dolphin flippers are different organisms that have the common ancestor. The similar bone structure of different organisms and different its function is due to common ancestor. Homology similarity of the structure and physiology of different species of organisms due to their descent from a common evolutionary ancestor so we can say that these structural similarities are an example of homology.
Can someone please answer these for me
Answer:
1. genotype of female: Bb
a. genotype of male: bb
b. white is dominant
c. female phenotype: white
male phenotype: black
Which describes a common pathway of nerve impulses through the divisions of the nervous system?
Answer:
Sensory Neurons
Explanation:
A population exceeding its carrying capacity will suffer a(n) ____________________ or ____________________, unless the excess individuals can switch to new resources or move to a new area.
A population exceeding its carrying capacity will suffer a(n) dieback; crash or crash; dieback, unless the excess individuals can switch to new resources or move to a new area.
A population is in overshoot while it exceeds to be had wearing ability. A populace in overshoot might also additionally completely impair the long-time period effective capacity of its habitat, lowering destiny wearing ability. It might also additionally continue to exist quickly however will finally crash because it depletes important herbal capital (useful resource) stocks. Carrying ability may be described as a species' common populace length in a specific habitat. The species populace length is confined through environmental elements like good enough food, shelter, water, and mates. If those wishes aren't met, the populace will lower till the useful resource rebounds.
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please help fast!!!! the main carbohydrates found in our food are in the form of _____ and _____. its from grade 6th chapter 2 components of food 50 points
Answer:
tod sun a qu e sjjee'
Explanation:
wins uend de iue dnauw oiptua hagnte pao
Answer:
starch and sugar
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Please help me!
A farmer wants to plant a large number of quality breed mango trees in a short time for commercial purposes. State and explain the techniques that can be used by the farmer.
The sequence of one strand of DNA is ACCTGC. What is the sequence of the complimentary strand of DNA
why are melting glaciers dangerous for humans
Which of the following is driven by
energy from gravity?
A. Precipitation
B. Evaporation
C. Condensation
D. Crystallization
It is precipitation that is caused by the energy driven from gravity. The correct answer is option A.
What is crystallization ?It is making up of crystals that is the hardened structures that may or may not have the definite structures and shapes from the liquid.
From the clouds under the impact of gravity the water falls down and flow downward towards the shed and flow in downward direction. Energy from the sun and the water cycles continue these cycles.
Precipitation comes up when the water gets condensed in the clouds and the water gets flown away from the clouds when evaporation. when the drops are heavy and they fall on Earth in the downward direction.
Precipitation is causing the condensation of clouds and the latter later forms the clouds via the process of precipitation of it falls down.
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Based on the movie( Food Inc), what are examples of policies that have been proposed as ways of dealing with social
changes resulting from new technologies, such as genetically engineered plants and animals.
Answer:
Food, Inc. Summary
If you aren’t completely familiar with what it is, Food, Inc was created by documentary filmmaker Robert Kenner and narrated by Eric Schlosser (Fast Food Nation), and also features commentary from Michael Pollan (The Omnivore’s Dilemma).
It lifts the veil on how the nation’s food industry has been consumed by corporations and how that impacts the farms where our food comes from, the supermarkets where we buy our food, and the restaurants where we eat that food. It tackles the FDA, food safety, food production, large-scale animal processing plants, and other food matters. If you are at all concerned or curious about the state of food supply in America, you should watch Food, Inc.
The Key Takeaways from the Movie
Supermarkets and Corn
The tomatoes you buy in the grocery store are picked when green and then ripened with ethylene gas
The food industry doesn’t want you to know the truth about what you are eating because if you did you might not eat it—it is a world deliberately hidden from us
Most people have no idea where their food comes from (do you?)
The fact that people need to write a book (and a blog!) telling people where their food comes from shows how far removed we are
The average grocery store has 47,000 products which makes it look like there is a large variety of choices—but it is an illusion—there are only a handful of corporations (like Monsanto, Tyson, and Perdue for example) and a few major crops involved
So much of the processed food is just clever rearrangements of corn (here are just a few examples of the additives that are derived from corn: cellulose, saccharin, polydextrose, xanthan gum, maltodextrin, and my favorite—ha ha ha—high fructose corn syrup)
30% of our land base in the US is used to grow corn because thanks to government policy farmers are paid to overproduce this easy-to-store crop
Farmers are producing so much corn that food scientists had to come up with uses for it—just like some of the additives listed above
Food scientists have also spent a lot of time reengineering our foods—so they last longer on grocery store shelves and don’t get stale
At the supermarket, candy, chips, and soda are all cheaper than produce
A double-cheeseburger from McDonald’s is 99 cents and you can’t even get a head of broccoli for that price
Those snack calories are cheaper because the commodity crops like corn, wheat, and soybeans are heavily subsidized
You start feeding corn to cows, E. Coli evolves and a certain mutation occurs which is very a harmful bacteria
Animals at factory farms stand ankle deep in their manure all day long so if one cow has E. Coli others can get it too
At a slaughterhouse their hides are caked with manure and if you are slaughtering 400 cows per hour how do you keep it from spreading?
So these harmful new strains of e Coli, that didn’t use to be in the world, are now a problem
E. Coli is even in spinach and apple juice because of the runoff from factory farms
It doesn’t help that the Chief of Staff for the USDA was a former lobbyist for the beef industry
Regulatory agencies are being controlled by the very companies they are supposed to be scrutinizing
There has always been food poisoning, but food is not getting safer it is becoming more contaminated because with the bigger factories it spreads the problem far and wide
There are only 13 slaughterhouses for the majority of beef in all the US
Ground beef from the grocery store has thousands of different cows mixed up in it so the chance of one of those cows in your meat having a disease is increased
After eating hamburger contaminated with E. Coli 0157:H7 a woman’s 2-year-old son went from a perfectly healthy boy to being dead in 12 days
In the 90’s some industrial meat factories were tested for E. Coli 0157:H7 and if they failed they were supposed to be shut down—but there was not enough authority to close the contaminated plants
Some companies are now using a hamburger meat filler cleansed with ammonia hydroxide to help kill E. Coli (mmm…that sounds tasty)
Best Question/Problem for Hot and cold compress
helpp mee plsss Thank youu
Im guessing any is fine, as long as its acceptable.
"What are the benefits and potential risks of using hot and cold compresses, and when is it appropriate to use each type?"
‼️‼️Help me out pls‼️‼️
Describe one human impact that is harmful to the environment AND one that is beneficial. Describe how each of these actions impacts biodiversity.
Answer:
one thing that is harmful is pollution. it kills lots of sea life and harming out air. a way we can pollute in a helpful way is to only throw things on the ground that is biodegradable and not plastic
Which set of conditions would most likely cause a change in gene frequency in a population that reproduces sexually
Small population size is most likely to result in changes in allele frequencies in a population. So, the correct option is (B).
The relative frequency of an allele (gene variant) at a specific locus in a population, expressed as a fraction or percentage, is known as allele frequency or gene frequency. It is the proportion of all chromosomes in the population that carry that allele divided by the entire population or sample size. Microevolution is the change in allele frequencies that happens within a population over time.
Given the given facts:
A specific location on a chromosome and a specific allele at that siteA population of N people with ploidy n, which means that each person has n copies of each chromosome in their somatic cells (e.g. two chromosomes in the cells of diploid species)In the population, the allele is found on I chromosomes.Learn more about gene frequency to visit this link
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Full Question: Which set of conditions would most likely cause a change in gene frequency in a population that reproduces sexually A. random mating. B. Small population size. C. No migration into or out of a population. D. Absence of natural selection
Can any body help me out please:) thank you!
Answer:
All answers are in the image
Oxpecker birds eat ticks and other
parasites that live on the skin of
rhinoceroses. This is an example of
Answer:
mutualistic relationship
Explanation:
Where is the most ATP produced in cellular respiration ?
The majority of ATP created during cellular respiration is used in the electron transport chain (oxidative phosphorylation).
Cellular respiration is the mechanism by which glucose molecules are broken down into [tex]CO_2[/tex] and [tex]H_2O[/tex] to provide energy from Adenosine Triphosphate (ATP). Additionally, cellular respiration often occurs in an organism's cells by turning the metabolic energy contained in foods into adenosine triphosphate. Additionally, it occurs in three steps, which are the TCA cycle, electron transport, and glycolysis (Oxidative phosphorylation). As a result, the stage of aerobic cellular respiration that produces the most ATPs is called oxidative phosphorylation.
Normally, ATP releases energy by dismantling any weak phosphate cells that may be present. The energy that is released as the phosphate cell disintegrates is then put to use. ADP is created after ATP.
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What are the conclusion from Mendelian experiment?
Mendel gathered his data for tens of thousands of plants before coming to the conclusion that the traits might be divided into expressed and latent features. These traits were described by him as being dominant and recessive, respectively. In a hybridization, dominant features are those that are passed on unaltered.
The three laws of dominance, independent assortment, and segregation serve as a summary of all the findings of Mendel's experiment. He proposed that each gene be passed down to the organisms twice, once from each parent. In their gametes, organisms only share one copy of each gene. In his opinion, traits are discretely inherited from each parent, one at a time.
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Capillary action, which allows plant sap to flow through a tree, is the result of cohesion between water molecules. True False
Capillary action happens in light of the fact that water is tacky, on account of the powers of attachment (water particles like to remain nearby) and bond (water atoms are drawn in and stick to different substances).
The development of water particles in the plant body is because of the cement powers between the water atoms and surfaces of the root and stems. The durable powers present between the water particles keep them intact and back off their transportation.
Since water particles like to remain together (attachment) and like to adhere to the walls of the containers of cellulose (bond), they ascend the cylinders as far as possible from the roots to the leaves. Water then, at that point, dissipates from the leaves, assisting with drawing up additional water from the roots. This interaction is called hairlike activity.
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What is insertion and deletion called?
An insertion and deletion is called as a frameshift mutation .
An insertion is a point mutation in which one or more base pairs is added to a DNA sequence. Point mutations is further divided into silent mutations, missense mutations, and nonsense mutations.
Frameshift mutation is considered as a genetic mutation caused by a deletion or insertion in a DNA sequence. This kind of mutation shifts the way the sequence is read. diseases like cystic fibrosis is a result of frameshift mutation that alters the CFTR gene. The harshness of frameshift mutation is reliant on the number of nucleotides and the position of insertion of nucleotides.
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Theobroma cacao (cacao) is the tree that produces seeds that are turned into chocolate. These trees provide many poor people in the tropics with some cash income. However, these farmers face many obstacles to production of their crop, including temperature and rainfall changes caused by atmospheric CO2 increases, and many diseases and pests. Analysis of the cacao genome showed that there is some (but not a lot) of genetic variation in the 10 major varieties. Which of the following strategies would be most useful in the long term in reducing pressures faced by cacao farmers? Select one:
A. Fertilize the trees in closely spaced areas and add fungicides and pesticides to eliminate pests.
B. Plant more trees in the temperate zone.
C. Plant trees farther apart so that disease transmission rates from one tree to the next will be lower.
D. Crossbreed cacao strains that produce high-quality cacao beans and ones resistant to a disease. Clear my choice
Answer:
B. Plant more trees in the temperate zone.
Explanation:
The presence of abundant cabondioxide (CO2) in the atmosphere is as result of a decrease in plants populations.
plants makes use of CO2 in photosynthesis a process in which green plants manufacture their food Abundance of trees helps to clear the environment from excess CO2 through their utilization leading to a fresh and enabling environment.
Hence their is need to plant more trees in temperate and avoid deforestation of trees to enable plant make of CO2 and reduced the adverse effect of its excess in the environment.
What are some evidences that support evolution?
some evidences that support evolution are: anatomy, molecular biology, biogeography, fossils, & direct observation. Genes, which are passed from parent to kid during reproduction, express themselves in these traits.
Evolution is the gradual change in the hereditary characteristics of biological populations over many generations. Genetic recombination and mutation are the usual causes of variation within a population. Genetic drift and natural selection, two evolutionary processes that might lead to particular traits becoming more or less dominant in a population, are likely to occur in this variation. This is how evolution works. Heritable traits emerge over multiple generations in response to shifting evolutionary factors that determine whether a trait is prevalent or rare within a population.
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the break dawn of food starts from our mouth due to the process of _________,_________and __________?
saliva, esophagus and stomach?
Plz help , trying to fix grade
Why do gametes have half a set of DNA? What would happen if they had afull set of DNA? Explain your answer.
Answer:
What would happen if gametes had a full set of DNA? The number of DNA strands would double with each generation. One gamete cell divides into four cells, but each resulting cell has half the amount of DNA as compared to the original cell. Body cell mitosis
Explanation:
The accepted theory of evolution suggests that (Chose all appropriate answers.)
A) traits acquired in ones life time can be passed on.
B) Species change over time.
C) Living species are related to extinct species.
D) different species can interbreed.
E) inherited variation allows some members of a population to be more fit than others.
F) animals that look alike are the most closely related.
Answer:
B
Explanation:
evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time
Theory of evolution includes the idea that the species are related to each other and changes with time. It states that inherited variation allows some members of a population to be more fit than others.
What is theory of evolution?Theory of evolution is based on genetic variation which affect phenotype of an organism in particular population.
The main theories of evolution is as follows:
Lamarkism: It is theory of inheritance of many acquired characters.Darwinism: it postulates the theory of natural selection.Mutation theory of evolution: proposed by Hugo de Varies.Neo-Darwinism: it is modified version of natural selection theory.According to these theories, traits are inheritable, species changes over time, inherited variation allows some members of a population to be more fit than others.
Thus, the correct options are A, B and E.
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1. Describe the structure and function of each of the
following:
(a) chromosome
(b) DNA
(c) gene
(d) allele
if a cell contained three pairs of homologoues (n=3, 2n=6) how many configurations are possible?
Twice the number of chromosomes in a haploid cell (n).
How many chromosomal combinations are feasible in the gametes of a 2n 6 cell?The number of potential chromosomal pairings in gametes is 2n (two to the ‘n’ power, where ‘n’ is the number of chromosomes in the haploid set). So, for 2n = 4, n = 2, and gamete number = 22 = 4, the answer is 4. Furthermore, for 2n = 6, n = 3, and gamete number = 23, the answer is 8.
As a result, an organism with cells 2n=6 is diploid and contains 6 chromosomes in total. In other words, this creature contains three chromosomal pairs. We will use the formula nCr = n! / r! * (n – r)! to compute combinations, where n represents the total number of things and r indicates the number of items picked at a time.
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