graphene because you can't even see it with the naked eye
Why do we only see four trophic levels in most food webs?
Answer:
Usually there's not enough energy left to support any additional levels.
Some people think hydropower should be used to supply all of the electricity
for the United States. Which of the following statements describes a flaw in
this plan?
A. Hydropower contributes to the greenhouse effect.
L
B. Hydropower can be used only in the desert.
C. Hydropower is used only as transportation fuel.
D. Hydropower can harm native aquatic populations.
Answer:
D. Hydropower can harm native aquatic populations.
Explanation:
Hydropower is the power of water or hydrosphere and is the cheapest and simplest form of energy. The hydrosphere is a renewable source of energy and is thus non-polluting but most of the hydropower that is converted into electricity is harmful to the marine and aquatic life forms. As it disturbs their habitats and created chemical and physical change in the body of water. Such as depletion of oxygen and enrichment of nutrients.Does mitosis or meiosis create body cells?
Does meiosis or mitosis creat sex cells?
Answer: mitosis creates body cells and
Meiosis creates sex cells
Explanation:
Bacteria are used in food industry for the production of ?
(a)curd
(b)cheese
(c)butter
(d)all of the above
Answer:
D.) All of the above
Explanation:
Bacteria has become a major component in the processing of dairy products because of various factors. The distribution of bacteria aids factors like ripening and flavor development of cheese and curd and also aids fermentation.
Curd, cheese and butter production all involve the use of bacteria.
The bacteria commonly used to make curd is lactobacillus bacteria.
The bacteria commonly used to make cheese are lactococcus, lactobacillus and streptococcus genera
The bacteria commonly used to make butter are lactococcus and leuconostoc .
PLS HELP ASAP 50 POINTS!!
Select the homologous structures.
a. human arm
b. whale's flipper
c. bird's wing
d. cat's leg
Answer:
Flipper of a whale and bird's wing are homologous structures.
For more better explanation see below.
Explanation:
Flipper of Whale is homologus to the wing of a bird. Homologous organs - The structure which are similar in their morphology, anatomy, genetics and embryology, but dissimilar in their functions.
Flipper of whale and wing of bird has similar morphology and anatomy, but differ in their functions according to their species as well as the habitat where they live in.
A dolphin’s flipper, bird’s wing, cat’s leg, and the human arm are considered homologous structures. Whereas human beings have bones such as the humerus, ulna, radius, wrist bones, and fingers, these features appear as similar bones in form in the other animals. Bats, whales, and many other animals have very similar homologous structures, demonstrating that these creatures all had a common ancestor.
PLEASE MARK ME BRAINLIEST.
Answer:
Human arm and cats leg
Explanation:
Which of the following statements is true?
OA. Chromosomes make up proteins.
OB. Genes make up cells.
OC. Chromosomes make up genes.
OD.
Genes make up chromosomes.
Are there ways you can help reduce the use of nonrenewable resources? If so, how?PLEASEEEEEEEEEEEEEEE HELPPPPPPOPO MEEEEEEEEEEE PLEASEEEE
Answer:
The three R's – Reduce, Reuse and Recycle – represent the best strategy for conserving non-renewable oil, coal and natural gas. ... Increasing the reliance on renewable energy sources, such as solar, wind and geothermal generators, can also help conserve the dwindling supplies of fossil fuels that remain in the ground.
Explanation:
Which best describes the flow of genetic information?
A. Protein to DNA to RNA
B. DNA to RNA to protein
C. RNA to DNA to protein
D. Protein to RNA to DNA
Answer:
B DNA to RNA to protein
Explanation:
i just did it
IS MY FINAL EXAM I NEED HELP!
The base pairs in a DNA strand are held together with hydrogen bonds. In what way would a cell be most affected if these were covalent bonds Instead?
A) The cell would need to make new DNA each time the strand was opened
B) The cell would only be able to open and close the DNA strand when it replicated.
C)The would have to take in and use more energy in order to break the covalent bonds.
D)The cell would need to replace the nitrogenous bases each time the DNA strand opened.d
Answer:
I think C)The would have to take in and use more energy in order to break the covalent bonds.
Explanation:
Since hydrogen bonds are weaker than covalent bonds.
When a sperm and egg combine, it is called _______________________________
Fertilization
Explanation:
When a sperm and egg combine, it is called fertilization.
Answer:
fertilization
Explanation:
A farmer uses genetic engineering to inject dairy cows with a genetically altered hormone (GAH) to result in the production of more milk. What might be a risk of using this technology to produce milk?
A.
Use of the GAH may increase the availability of milk.
B.
Use of the GAH may increase the amount of hormones in the milk.
C.
Use of the GAH may provide extra milk to feed the poor.
D.
Use of the GAH may allow the farmer to reduce milk prices.
Answer:
B
Explanation:
A farmer uses genetic engineering to inject dairy cows with a genetically altered hormone (GAH) to result in the production of more milk, and the use of the GAH may increase the amount of hormones in the milk, which is a risk that is present in Option B.
What is a genetically altered hormone(GAH)?The GAHs that are used in dairy farming can result in an increase in the levels of hormones such as insulin-like growth factor 1 (IGF-1) in the milk, and these hormones can be harmful to human health and are also associated with an increased risk of certain cancers, such as breast cancer and In addition to concerns about the health effects of GAHs, there are also environmental concerns. The increased milk production resulting from GAH use can lead to overproduction, and animals get harmed by these genetically altered hormones.
Hence, the use of the GAH may increase the amount of hormones in the milk, which is a risk that is present in Option B.
Learn more about the genetically altered hormone here.
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Which statement is true regarding nuclear power plants
what do you know about energy and cells?
Answer:
Cells do not use the energy from oxidation reactions as soon as it is released. Instead, they convert it into small, energy-rich molecules such as ATP and nicotinamide adenine dinucleotide (NADH), which can be used throughout the cell to power metabolism and construct new cellular components.
Can somebody please answer this quickly?
Answer:
I think it would be C, that is the only one that makes sense to me. Hope i can help
Explanation:
which level of organization does the neuron belong in
Answer:
CELL
Explanation:
Where in the cell is dna copied into rna? Cytoplasm or the nucleus
Answer:
nucleus
Explanation:
*please mark brainliest *
PLEASE HELP ME FILL IN THE BLANKS ASAP!!!!!!!!!!!!!! GIVING AWAY 18 POINTS!!
1. D. Marine
2. A. Desert
3. E. Freshwater
4. C. Grassland
5. B. Tundra
If there is a #6, then the answer would be F. Tropical rainforest
Drag the tiles to the correct boxes to complete the pairs. Match the descriptions to the correct type of fungi. has positive and negative mating strands has erect fruiting body the first fungi to evolve lives in a varied habitat and exhibits all forms of nutrition chytrid arrowRight common mold arrowRight sac fungi arrowRight club fungi arrowRight
Answer:
Fungi are unicellular or multicellular eukaryotic organisms that are dependent for their energy and food on dead organic material or other organisms. These organisms produce by both sexual and asexual reproduction.
1. club fungi show a bipolar mating system as they have positive and negative mating strands.
2. sac fungi have an erect fruiting body filled with asci.
3. The chytrids have a cell wall of chitin, a flagellum, absorptive structures for nutrition therefore have a lineage.
4. The common molds grow in the form of hyphae and shows all for of nutrition and live in every possible habitate.
hope this helps you! :)
In guinea pigs, short fur (S) is dominant to long fur (s). Two heterozygous guinea pigs
(Ss) mate. Complete the Punnett square and then list the percentages of the
expected genotypes for their offspring.
Explanation:
A way I like to remember heterozygous is by remembering that the other word for heterozygous because brainly wont let me say it apparently. The same gender liking each other, so (word) is same, hetero is different.
each square would have 25% each because 100%÷4=25.
Dominant one is like mixing black and blue together,the black is gonna give a dark effect to blue so black is dominant.
Blue is recessive.
The percentage of the Ss is 75% while the percentage of the ss is only 25%.
Performing a crossGiven that we have the genotypes of the both parents as Ss. The Ss imples that the gene for short fur is dominant over the gene for long fur.
Now, when we perform te cross for the first generation, we will discover that we have the offspring; Ss, Ss, Ss and ss. The percentage of the Ss is 75% while the percentage of the ss is only 25%.
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Every copy of a particular protein manufactured by a cell shows the same incorrect amino acid at the same point in its structure. According to the central dogma of molecular biology, in which structure does this error originate?
1. mRNA
2. DNA
3. tRNA
4. rRNA
Answer:
Dna
Explanation:
I had this on a test and this was the answer
According to the central dogma of molecular biology, DNA does this error originate.
What are the functions of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins.
DNA is made of nucleotides. A nucleotide has two components: a backbone, made from the sugar deoxyribose and phosphate groups, and nitrogenous bases.
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Image B depicts three skulls. Do you think the image supports the fact that all three organisms share an evolutionary relationship? Explain your answer using evidence from the image.
Answer: This is a series of skulls and front leg fossils of organisms believed to be ... 3. What is the biggest change in leg anatomy that occurred from the dawn ... Shown below are images of the skeletal structure of the front limbs of 6 animals: human,
Explanation: i think
The organism used in bread making is?
(a) Yeast
(b) Aspergillus
(c) Mushroom
(d) Rhizobium
Answer:
Yeast is used in bread making
Bacteria exist in many shapes and sizes. Which of the following diagrams does not represent a typical bacterial cell?
Answer:
can u please send the diagram.
If an air mass is sinking, it must be
A. cold and less dense
B. warm and more dense
C. cold and more dense
D. warm and less dense
Answer:
The awnser to your question is C.
Explanation:
The colder matter is the atoms get closer therefore making the matter more dense. A. is half correct but if the matter is cold it wouldn't be more dense because when something is less dense it goes above whatever is around it. Take for example water and oil. They seperate into different layers due to density. Hope this helps. :)
The airmass is a large homogenous mass of air over a region that could be for many days.
The volume of air is defined by the temperature and water vapor content. Airmass may spread from hundreds to miles and are classified according to latitude and altitude. There are 4 types of air mass artic, tropical equatorial, and polar. The airmass that is light is warm and has a low pressure always lifts upwards. The cold and cool airmass always settles as it's dense and heavy. Hence the option C is correct.Learn more about the air mass is sinking, it must be.
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Heart is slightly tilted towards right. Give reason.
Answer:
The heart is slightly tilted towards the left side because of the larger size of the right lung than left lung. This provides enough space for the heart to work properly and pump blood efficiently to different parts of the body. ... heart is tilted towards left not towards right
Answer:
I thought it was more tilted to the left because the right lung is bigger than the left
Explanation:
True or false Men can be carriers of X-linked disorders?
Answer:
True.
Explanation:
X-linked recessive diseases most often occur in males. Males have only one X chromosome.
HOPED THIS HELPED!!
CAN SOMEONE HELP ME PLEASE!! 100 POINTS!!! NO COPYING AND PASTING!!!! IN 4 PARAGRAPHS PLEASE!!!
How are Earth's structures created over time?
Answer:
Earth crust is constantly changing primarily due to plate tectonics (plate motion), but it also changes from activity on the surface from river, man made and meteorite impact. ... Continents and oceans do not ride atop the plates without changing. As the plates move and change so do the continents and oceans
Answer:
Explanation:
Earth's structures were created when the planet was first formed. Over time, its own gravitational and magnetic forces drove the Earth's core rotation. Other geological activities affected its structures; such as glacial movements, tectonic plates collisions and submersion, volcanic eruptions and so on. There were also major external events the asteroid impact that killed most lives on Earth. Human activities' impact on Earth's structures were relatively small until the recent centuries.
USING THE ORGANELLES NUCELEUS, CHROMOSOMES, AND CELL MEMBRANE ANSWER THE FOLLOWING BELOW PLEASE!!!!!
Answer:
Jason, i don't have much time because I'm very tired and i have to go to bed but this a good example of homeostasis.
Imagine that the cell is exposed to some kind of stressor such as extremes of temperature, exposure to toxins, or mechanical damage. The chain reactions will be
Disruption or the formation of cell membrane blebsAlteration of protein synthesis and accumulation of altered proteins in the ERAlteration of the chromatin of the chromosomes inside the nucleus and DNA damageAlteration of the permeability of organelles such as mitochondria with consequent alterations in metabolismDecrease in ATP levels and increase in cytoplasmic calcium levelThe combination of all this can lead the cell to death but it can respond in various ways:
the cell can decrease protein synthesis and induce the transcription of specific stress-sensitive chromosomal genes that correct altered proteinsIt can respond to DNA damage by stopping replication and trying to repair it If it cannot survive it can commit suifcide so as not to harm other cellswhich of the following most accurately describes the function of a vaccine
Answer:
to protect you from getting an effaction
to protect you from getting from infection by pathogen is accurately describes the function of a vaccine
what are the types of vaccine ?A vaccine can be defined as a biological preparation which provide an active acquired immunity to a specific infectious and transmissible disease.
A vaccine consist of an agent that has a similarity to the disease-causing microbe. Inactivated Vaccine are formed by inactivating a pathogen by applying heat or chemicals such as formaldehyde or formalin, it destroys the pathogen’s ability to replicate.
Attenuated vaccines are formed from different ways like passing the disease-causing virus through a series of cell cultures or animal embryos.
Toxoid Vaccine can be made by inactivating the toxin released from bacteria that causes disease symptoms, the organisms or viruses used in inactivated vaccines which can be done via treatment with a chemical such as formalin.
Subunit Vaccine use a part of a target pathogen to provoke a response from our immune system, which can be done by isolating a specific protein from a pathogen.
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PLEASE HELP ASAP
In patients infected with nonresistant strains of the tuberculosis bacterium, antibiotics can relieve symptoms in a few weeks. However, it takes much longer to halt the infection, and patients may discontinue treatment while bacteria are still present. How could this result in the evolution of drug-resistant pathogens?
The bacteria are still present and may obtain antibiotic resistance to spread to other species by horizontal gene transfer.
Antibiotics have become diluted and weak because of a limited supply.
Bacteria have purposefully directed their immune system to resist the effect of the antibiotic.
Resistant bacteria are polyploidy and can resist the antibiotic, a trait that is passed on to their offspring.
Answer:
The bacteria are still present and may obtain antibiotic resistance to spread to other species by horizontal gene transfer.