Answer: Solar Energy
Explanation:
Other forms of energy like coal, natural gas and gasoline cannot be renewed by physical or mechanical methods. Also, it takes millions of years to form such non-renewable resources.
define carrying capacity. explain the connection between dynamic equilibrium and carrying capacity.
The greatest number of a biological species that can be supported by a given environment, given the amount of food, habitat, water, and other resources available, is known as the carrying capacity of that environment. To test a number of theories regarding population and settlement patterns, a dynamic equilibrium system model of carrying capacity is created and put into operation.
An equilibrium is reached once the population size reaches its carrying capacity. The habitat's resources will refill at a rate required to support the population in this condition of equilibrium.
Using a logistic function, the impact of carrying capacity on population dynamics is modeled. The term "carrying capacity" refers to the maximum population that an ecosystem, farm, or fishery can sustain. Before the 1950s, the phrase "carrying capacity" had been used to refer to population restrictions in relation to a number of different processes. The concept of sustainable population includes the idea of human carrying capacity.
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some food substances inhibit iron absorption. all the following are such inhibitors except: a. calcium and phosphorus in milk. b. phytates in whole grain cereals. c. vitamin c in citrus fruits. d. tannins in tea and coffee.
Some foodstuffs prevent the body from absorbing iron. With the exception of phytates in whole grain grains, all of the following are such inhibitors. (Choice b)
What occurs if your calcium intake is insufficient?Several conditions can result from inadequate calcium intake, including the following: Osteoporosis, which results in brittle, weak bones and raises the chance of falling. Children who with rickets develop weak, brittle bones. Osteomalacia, which affects both children and adults, results in soft bones.
How can you determine whether you need calcium?Muscle pain, cramps, and spasms might be signs of a calcium shortage. walking or moving causes arm and thigh ache. tingling and numbness in the legs, feet, arms, and mouth, as well as in the hands, arms, and legs.
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Which one of the following is a domain?
A.Archaea
B.Bacteria
C.Eukarya
D.All of these
Answer:
D. All of these are domains. Archaea, Bacteria, and Eukarya are the three domains of life on Earth.
if a single sperm cell contains exactly 0.2 picograms of dna, what is the expected nuclear dna content of a somatic cell isolated from this same individual that is arrested in g1 phase? a. 0.2 picogram b. 0.4 picogram c. 0.8 picogram d. 0.16 picogram
A single sperm cell contains exactly 0.2 picograms of DNA, 0.8 picogram is the expected nuclear DNA content of a somatic cell. Hence, the correct option is (c).
The expected nuclear DNA content of a somatic cell isolated from this same individual that is arrested in G1 phase would be c. 0.8 picogram. During the normal cell cycle, the DNA content of a somatic cell doubles during the S phase, leading to the replication of all chromosomes, hence each somatic cell will have twice the DNA content of a sperm or egg cell, which only have half the DNA content of a somatic cell because of the process of meiosis. Therefore, if a single sperm cell contains 0.2 picograms of DNA, a somatic cell would have 2*0.2 = 0.4 picograms of DNA in G1 phase and if we double that in S phase the answer is 0.8 picogram.
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Which of the following is a facultative, rather than obligate, intracellular pathogen?
A. Chlamydia
B. Brucella
C. Rickettsia
D. All of the choices are correct.
The correct option is b ; Brucella , Brucella abortus is the causative agent of bovine brucellosis, a serious zoonotic illness.
Acute illness may reoccur in latently infected humans and animals under situations that reduce host resistance. This bacteria is classified as an intracellular pathogen.
The adjective "facultative intracellular pathogens" refers to "intracellular" to signify that these infectious organisms may reproduce both inside and outside cells (Moulder, 1985).
All viruses, certain bacteria such as Chlamydia and Rickettsia, certain protozoa such as Trypanosoma spp., Plasmodium, and Toxoplasma, and fungi such as Pneumocystis jiroveci are obligate intracellular parasites that infect humans.
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Which of the following diseases are caused by smog? (a) Rickets. (b) Bronchitis. (c) Breathing Problems. (d) All of the above.
The answer to the question is (d) All of the above. These three diseases are all caused by smog in some way, either through a reduction in vitamin D exposure or through the irritation of airways.
Smog is a term used to describe a type of air pollution that is created by a combination of pollutants from burning fossil fuels. It is a major environmental concern and has been linked to a range of health problems.
Rickets is a disease caused by a lack of vitamin D, which is found in sunlight. Exposure to smog can reduce the amount of sunlight that reaches the skin, reducing the amount of vitamin D the body can absorb. This can lead to a deficiency in vitamin D and cause rickets.
Bronchitis is a type of respiratory infection caused by breathing in irritants, such as smog. The particles of air pollution inflame the airways, leading to breathing difficulties and symptoms such as coughing and wheezing.
Breathing problems can also be caused by smog. Inhaling the particles of air pollution irritates the airways and leads to symptoms such as coughing, wheezing, and shortness of breath.
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Need help with this science question
B is the gene for brown hair and b is the gene for red hair. In the Punnett square below, the gene that belongs to the empty box is bb.
According to the Punnett square, offsprings from these two parents have a 50% chance of inheriting one B allele and one b allele. For the B gene, the Individuals that inherit these two alleles are heterozygous.
Inheriting Bb confers the phenotype is brown hair. Whereas, inheriting bb confers the phenotype is red hair.
For predicting the possible allele combination and their frequencies for a particular cross the Punnett square is used.
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a manual white blood cell count was performed by the hematology technologist. the cell counts for each of two sides was 38 and 42 respectively. all nine large squares were counted on each side. the dilution for this kit was pre-measured at 1:10. what should the technologist report as the white cell count?
The technologist will report the white cell count as0.44 x 109/ L.
Except for white cell counts in body fluids with incredibly low cell counts ( 1,000 cells/L), such as cerebrospinal fluid, the manual procedure using a diluting chamber and a hemocytometer is no longer used. The red cells are removed from view by diluting blood in a diluent that lyses them. A WBC count is performed to ascertain whether the total number of WBCs falls within a healthy range. This test is frequently done in conjunction with other blood tests, like a CBC, which also measures the blood's other components, like red blood cells and platelets. Either manually counting cells with a hemocytometer or automatically counting cells is possible.
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What two nations in the modern Middle East used to be Persia and Sumer
Answer:
Iraq and Iran.
Explanation:
The land of Sumer was found in the south-western portion of the Akkadian Empire, and borders that of the Persian Gulf to the south-east to the northern border city of Kish. Persia, on the other hand, started on the Iranian Plateau, and spanned from modern-day Egypt upwards to modern-day Negev of Greece. The eastern border ended near modern-day India.
In noting the main portion of the empire (as seen on the attached image, the main portions include present-day Iraq and Iran, which take up the bulk of the middle of the empire.
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after describing cellular structure, juanita describes metabolism, the chemical process that takes place in living organisms. she explain that metabolism has two phases that:
Metabolism, the chemical process that takes place in living organisms. Metabolism comprises two phases: anabolism and catabolism, which occur concurrently and continually inside cells.
Catabolism is the breakdown of organic material, whereas anabolism is the utilization of energy to produce cell components such as proteins and nucleic acids.
The process through which the body converts food and beverages into energy is known as metabolism. Throughout this process, calories from food and liquids combine with oxygen to generate the energy that the body requires.
Anabolism necessitates the use of energy in order to develop and build. Catabolism consumes energy in order to break down. In all living creatures, these metabolic processes collaborate to create energy and repair cells.
Catabolism happens throughout the digestion process. For example, it is the process by which a slice of bread is broken down into basic components that your body can utilise, such as glucose.
Anabolism may be seen in bone formation and mineralization, as well as muscle mass increase.
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What would be the end result if an
experiment has been repeated several
t mes and continues to support a
hypothesis?
A. setting up another experiment based on the same
hypothesis
B. developing a theory
C. graphing the data a different way
D. recoing the hypothesis
The end result if an experiment has been repeated several times and continues to support a hypothesis results into developing a theory. Thus, the correct option is B.
What is a Hypothesis?A hypothesis in a scientific context, is a testable statement which is about the relationship between two or more different variables or a proposed explanation for some observed phenomenon or experimental work.
A theory is a carefully thought-out explanation for all the observations which are made of the natural world which has been constructed using the scientific methods, and which brings together many different facts and hypotheses. Thus, the end result if an experiment has been repeated several times and continues to support a hypothesis is the development of a theory.
Therefore, the correct option is B.
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an interesting case study of evolution in apes has revealed evidence that, in the past, humans had 24 pairs of chromosomes. what is the most likely explanation for this change?
The most likely explanation for this change is that : human lineage changed from 24 pairs of chromosomes to 23 pairs of chromosomes due to a chromosomal fusion.
What is chromosomal fusion?Gene made by joining parts of two different genes is called chromosomal fusion. Fusion genes and fusion proteins that come from them, may be made in laboratory, or made naturally in the body when part of DNA from one chromosome moves to another chromosome.
A fusion gene is a hybrid gene created from two distinct genes in the past. Translocation, interstitial deletion, or chromosomal inversion are possible causes. All of the major forms of human neoplasia have been found to frequently contain fusion genes.
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Turn these answers into two paragraphs. (5-8 sentences each)
Thank you! >_<
What are GMOs used for?
To give plants and animals the desired traits for a specific purpose.
Plants-Grow faster, taste better
Animals-Specific breeds, laboratory research, human consumption(Matured faster)
Where can you find organisms that are GMOs?
Produce section in stores
In addition to tasting better, genetically modified crops have higher yields, a longer shelf life, are resistant to pests and diseases, and are longer lasting.
What did you find most interesting?
Something I found interesting was how sometimes genes from one organism could be inserted into an entirely different one. The endless amounts of mixed results this can cause is fascinating. Another thing I found interesting was how GMO’s are used in around 90% of some of our everyday produce.
Do you think there is a benefit to using GMOs?
I do think there is a benefit to using GMOs because there is so much that they already do for us. Though there are risks, there are still ways to improve them. GMOs help our society, research, and food markets.
What did you learn?
I learned that GMO’s can be used to improve health, maturity, taste, and durability.
GMOs are used to give plants and animals the desired traits for a specific purpose as plants grow faster.
Where can you find organisms that are GMOs?In addition to tasting better, genetically modified crops have higher yields, a longer shelf life, are resistant to pests and diseases, and are longer lasting. Something I found interesting was how sometimes genes from one organism could be inserted into an entirely different one. The endless amounts of mixed results this can cause is fascinating. Another thing I found interesting was how GMO’s are used in around 90% of some of our everyday produce.
I do think there is a benefit to using GMOs because there is so much that they already do for us. Though there are risks, there are still ways to improve them. GMOs help our society, research, and food markets. I learned that GMO’s can be used to improve health, maturity, taste, and durability.
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which part of the cardiac muscle protects the cell?
The cardiac muscle also called the myocardium makes up the thickest and middle part of the heart wall and it protects the cell.
The outer layer, known as the epicardium or visceral pericardium, surrounds the cardiac muscle on the exterior. This helps protect it from contact with other organs. The parietal pericardium attached to this outer layer creates a fluid-filled layer that helps lubricate the heart. Each muscle is surrounded by a connective tissue sheath called the epimysium. Fascia, connective tissue outside the epimysium, surrounds and separates the muscles. Muscle cells are composed of a filament system underlying their mechanical properties and internal membrane systems related to the control of contraction.
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match each product of pyruvate metabolism with the condition under which it is produced.
Aerobic oxidation __
Fermentation in human mucle __
Fermentation in yeast and bacteria __
(When exposed to oxygen, human cells do aerobic respiration, which produces acetyl CoA. Human cells may ferment lactic acid in the absence of oxygen, producing lactate.
Lactate: fermentation in human muscle
Ethanol: fermentation in yeast and bacteria
Acetyl CoA: aerobic oxidation
Alcohol fermentation occurs under anaerobic settings and creates ethanol in yeasts and many bacteria.) Under aerobic conditions, pyruvate can diffuse into mitochondria.
where it enters the citric acid cycle and generates reducing equivalents in the form of NADH and FADH2. These reducing equivalents then join the electron transport system, producing 32 ATP per glucose molecule.
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What is the relationship between kinetic and potential energy of a falling object ?
hiv/aids associated linear gingival erythema includes all of the following except: group of answer choices a) pyogenic granuloma b) 2- to 3-mm band of intense redness in free gingiva c) most commonly affects entire dentition d) conventional plaque control and instrumentation therapy is ineffective
All of the following, with the exception of pyrogenic granuloma, are symptoms of linear gingival erythema associated with HIV/AIDS.
pyrogenic granulomas are tiny, red bumps on the skin that are raised. The bumps may be moist and have a smooth surface. The high numbe makes them easily bleed. The lesions frequently recur after treatment and can occasionally be brought on by trauma or the use of specific medications. They can happen to anyone of any age, but they typically affect older kids and young adults. A particular kind of vascular tumour are pyrogenic granulomas. additionally known as lobular capillary hemangioma. blood vessels at the location. This growth is benign (noncancerous). Skin lesions called pyrogenic granulomas can appear after an injury.
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Interpret the phylogenetic tree.
Human mpaizee Mouse Trout Earthworm Rose Green alaa Bacterium
Drag "True" or "False" to the end of each statement.
The single branch for bacterium could be expanded to show the relationships of many species of bacteria.
This tree shows that a bacterium is the lowest form of life.
The bacteria that are alive today are the common ancestors of all other organisms.
This tree could be rotated so that the branch for bacterium is on the top rather than the bottom of the tree.
This tree shows that bacteria evolve into green algae, which evolve into plants, and so on.
Less evolution occurs in the long branches than occurs in the short branches.
Interpret the phylogenetic tree. Human maize Mouse Trout Earthworm Rose Green algae Bacterium.
The evolutionary links between creatures are shown in a diagram called a phylogenetic tree, which is built based on differences or similarities. The lineages diverge at the branching point, or node, and the length of the each stem shows the total number of cumulative changes. The phylogenetic tree, also known as a taxon, serves as an evolutionary relationship indicator in evolutionary biology. Sister groups are two descendants that split off from the same node.
Cladograms demonstrate shared ancestors across various species as well as how recently their evolutionary paths diverged. In closely related creatures, the degree of molecular structural arrangement (DNA sequence) is high or the same, but in distantly related organisms, the level of organization is different or low. Here is the phylogenetic tree that is provided: Speciation occasion (most common ancestor of humans and chimpanzee) Continuity of Mouse Trout Earthworm Cherry Branch emerald algae eutaxon Node Root Basic ancestry (Common ancestor) Ancestors contemporary species.
Therefore, The single branch for bacterium could be expanded to show the relationships of many species of bacteria. (True) This tree shows that a bacterium is the lowest form of life. (False) The bacteria that are alive today are the common ancestors of all other organisms. (False) This tree could be rotated so that the branch for bacterium is on the top rather than the bottom of the tree. (True) This tree shows that bacteria evolve into green algae, which evolve into plants, and so on. (False)Less evolution occurs in the long branches than occurs in the short branches. (False)Learn More about Cladograms here:
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which type of tissue provides structure and support for the body?
Connective tissue supports other tissues and binds them together (bone, blood, and lymph tissues).
Which kind of tissue offers stability and structure?
auxiliary connective tissue
Bone and cartilage, two types of supportive connective tissue, give the body its strength and structure while shielding the soft tissues. These tissues are composed of a matrix of tightly packed fibers and a few unique cell types.
What kind of tissue supports the body's organs?
The tenacious, frequently fibrous tissue that provides support and suppleness to the body's components by holding them together is called connective tissue. It makes up a sizable portion of the skin, tendons, joints, ligaments, blood vessels, and muscles in practically every organ.
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Identify whether the statement applies to autotrophs heaterotrophs or both autotrophsand heterotrophs
Answer:
Explanation:
i got it right on my test
How is the gene CCNA 1 most likely to break
Answer:
CCNA1 (Cyclin A1) is a Protein Coding gene. Diseases associated with CCNA1 include Myeloid Leukemia and Testicular Cancer. Among its related pathways are Regulation of activated PAK-2p34 by proteasome mediated degradation and Homology Directed Repair.
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The Kaibab squirrel lives on the Kaibab Plateau, north of the Grand Canyon. Another very similar squirrel, the Abert squirrel, lives only south of the Colorado River, on the other side of the Grand Canyon. These two species share a common ancestor that lived many years ago.
Abert's squirrels are light gray with a black or dark gray stripe down their backs and white underparts.
Kaibab squirrels have distinct color variations, with dark gray or black sides and underparts, white tails, and russet or chestnut brown backs and heads.
The canyon served as a physical barrier between the woods and squirrels on each rim. One squirrel population has split into two different groups that could no longer procreate. This is known as allopatric speciation, according to National Geographic.
Kaibab squirrels became geographically separated from Abert's squirrels, which live on the canyon's south rim. Kaibab squirrel« acquired special traits in isolation, such as a full whitetail.
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like animals, cyanobacteria have a circadian rhythm. by analyzing the genes that maintain bio- logical clocks, scientists concluded that the 24-hour rhythms of humans and cyanobacteria reflect convergent evolution (see concept 26.2). what evidence would have supported this conclusion? explain.
The evidence that would have supported the conclusion that the 24-hour rhythms of humans and cyanobacteria reflect convergent evolution is the genetic similarity of the genes that maintain the biological clocks in both organisms.
Convergent evolution is the process by which different organisms independently evolve similar features or adaptations in response to similar environmental pressures or selective pressures.
In the case of circadian rhythms, if scientists found that the genes that regulate the biological clocks in humans and cyanobacteria were similar, it would suggest that both organisms have evolved similar clock mechanisms in response to similar selective pressures, such as the daily cycle of light and dark.
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Loss of epigenetic information as a cause of mammalian aging is called: ___________
The loss of epigenetic information as a cause of mammalian aging is called epigenetic drift. Epigenetics refers to the study of changes in the way genes are expressed.
Epigenetic modifications, such as methylation and acetylation, can silence or activate genes. As cells divide and aging , these epigenetic modifications can change, leading to an accumulation of errors in the way genes are expressed. This process is called epigenetic drift. Epigenetic drift is thought to be one of the causes of aging in mammals. As cells age, the epigenetic modifications on their genes become less stable, which can lead to changes in gene expression that contribute to the decline of tissue function. This can lead to an increased risk of diseases associated with aging, such as cancer, heart disease, and neurodegeneration.
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Why do secondary sexual characters(jikffbihpz) grow during adolesecnece?
Answer:
typically develop during adolescence as a result of hormonal changes in the body.
Explanation:
I am not sure what you mean by "jikffbihpz." Could you please provide more context or clarify your question?
Also the term "secondary sexual characters" typically refers to physical characteristics that distinguish males from females in sexually reproducing species, such as antlers on male deer or breasts on human females. These characteristics are not related to the reproductive organs themselves (the primary sexual characteristics) and typically develop during adolescence as a result of hormonal changes in the body.
why is an overabundance of nutrients harmful to a water supply?
Explanation:
An overabundance of nutrients—primarily nitrogen and phosphorus—in water starts a process called eutrophication. Algae feed on the nutrients, growing, spreading, and turning the water green. Algae blooms can smell bad, block sunlight, and even release toxins in some cases.
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if an uncut plasmid travels much faster through a gel than expected, but still only gives one band, what could be the potential explanation
Because the plasmid supercoiled, and therefore was able to move through the gel much more quickly than expected, but still only gives one band.
There are two types of uncut plasmids: relaxed and supercoiled (or superhelical). When compared to a rubber band, these two shapes are easier to comprehend. The relaxed form is comparable to a regular rubber band. The band will coil into a compact shape resembling a supercoiled plasmid if you hold one side of the band between your thumb and forefinger and roll that side. The band won't continue to twist if you cut it with scissors.
Supercoiled plasmids may pass across a gel significantly more quickly than a linear DNA fragment with the same amount of base pairs because of their small size. Similar to how sliced fragments of the same mass normally move more slowly than uncut relaxed plasmids do.
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because the tropical rainforest has warm temperatures, abundant water, and a year-round growing season, what type of net primary productivity does it have?
Tropical rainforests have the maximum NPP and biodiversity of almost any terrestrial ecosystem. The physical environment encourages large photosynthetic production and rapid development.
Water, sunshine, and high temperatures are constant in Tropical Rainforests, and there is a dense concentration of plants, resulting in very high GPP and NPP. As a result, increased productivity increases biomass.
Tropical rainforests have the greatest diversity and production. The tropics have more sun energy and resources, which encourages increased output.
Because of the significant quantity of rainfall and warm weather, tropical rainforests may retain a significant species richness of plants.
Net primary production is high in warm, wet biomes such as the tropical rainforest because mild temperatures, ample water, and a year-round growing season drive plant development. Due to severe temperatures and a lack of water, some biomes, such as deserts and tundra, have poor primary production.
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Complete the following sentences to describe the stages of the cell cycle. Choices may be used more than once. Then, place the sentences in chronological order beginning with a freshly divided cell.
After one full cycle of cell division, there is a phage called interphase. It takes up the majority (more than 95%) of the time inside the cell division process and is the longest period of the cell.
How might cell division be explained?When a parental cell divides, two or even more daughter cells are created. This process is known as cell division. For a lot of creatures, it is a crucial biological process. In order to develop, replenish (repair), and reproduce, multicellular organisms adopt this method.
Cell division is known for what purpose?To create new cells, cells divide. One cell splits to create two, then these two cells divide again to create four, and so on. Because old cells divide to create new ones, this process is also known as "cell division" or "cell reproduction."
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Which of the following is true of the evolutionary species concept?
Select one:
O a. It can be used to determine if two species are reproductively isolated
O b. It can be applied to both asexually and sexually reproducing species
O c.
It can only be used to study prokaryotes
d.
It can only be used to study living organisms
O e.
It can be used to determine traits such as size differences between males and
females
Answer:
It can be applied to both asexually and sexually reproducing species.
