Which is the main source of dissolved oxygen in the ocean?
A underwater earthquakes
B decay of living organisms
C animals that live near the surface
D plants and algae that live near the surface
Answers
Answer:
D plants and algae that live near the surface
Explanation:
One of the main source of dissolved oxygen in the ocean is through the activities of plants and algae.
Oxygen in the atmosphere can mix with the water and dissolve in it. Plants and algae releases oxygen a product of life activities. The oxygen becomes dissolved in water and contributes to the net dissolved oxygen in the ocean. These underwater plants and algae takes up carbon dioxide from the environment and releases oxygen as a by-product.Related Questions
In the word search below are the names of several pieces of lab equipment. As you find each piece of equipment, record its name on the list. There are only 13 words out of the listBunsen burner,Pipestem triangle, Evaporating dish, Beaker, Utility clamp,Iron ring, Mortar and pestle, Crucible and cover, Gas bottle, Saftey goggles,Corks, Watch glass, Erlenmeyer flask, Wire gauze, Pipet, Buret,Triple beam balance, Test tube rack, Funnel, Scoopula,Well plate, Wire brush,File,Wash bottle, Graduated cylinder,Thanks
Answers
A crossword is a type of word puzzle that often consists of squares or a rectangular grid of squares with black and white borders. In this case, this is created to educated the audience on the various types of lab equipment.
What are the answers to the crossword puzzle?The answer to the crosswords are as follows:-
Beaker -second rowBunsen Burner - second last lineCorks - besides the word thermometerCrucible and cover - tenth row diagonalEvaporating dish- fifth row diagonalGas bottle - Last lineIron Ring - second last columnMortar and pestle - fifth columnPipestem triangle- third-row diagonalSafety goggles - Fifth columnUtility clamp - seventh rowWatch Glass - Seventh column invertedWire gauze - second line.Learn more about lab equipment:
https://brainly.com/question/17391361
#SPJ1
Which factor does not alter the rate of hydrolysis of maltose, a disaccharide?
A.temperature of the environment of the reaction
B.pH of the environment of the reaction
C.number of enzyme molecules present
D.size of the substrate molecule
Answers
The factor that does not alter the rate hydrolysis of maltose is the number of enzyme molecules present.
Enzymes are biological catalysts that promote various reactions in the body. Enzymes are specific in their action. Therefore, only an enzyme can catalyze a particular reaction. The enzymes work based on a lock and key model.
A disaccharide is composed of two mononosaccharide units. The factor that does not alter the rate hydrolysis of maltose is the number of enzyme molecules present.
Learn more: https://brainly.com/question/24381583
A man and a woman have 24 children. Of the children, 17 have freckles and 7 don’t have freckles. What are the genotypes of the parents? Why?
Answers
The genotype in this case should be likely to heterozygous for the freckles gene which is denoted as by F1.
This is because 17 of the 24 children have dots, which suggests that the parents are both carriers of the allele for dots. This means that at least one of the parents must have the Ff genotype, which allows them to pass the allele for dots on to their children. still, since 7 of the children don't have dots, this suggests that the other parent has at least one sheepish allele, denoted as ff.
This means that the other parent must have the Ff or ff genotype. The Ff and ff genotypes are the most likely for the parents in this script because it would explain the 17 children with dots and the 7 children without them. This is because the F1 genotype would produce children with a 50 chance of getting the allele for dots, and the ff genotype would guarantee that none of the children will have dots.
To know more about heterozygous visit:
https://brainly.com/question/30156782
#SPJ4
clarify the relationship between cell, tissue and organ
Answers
Answer:
The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.
“Some viruses are programmed to reproduce by identifying bacteria, killing them, and assembling new viruses.viruses do not eat the bacteria and do not grow after they are made. Viruses are not alive. Explain two reasons why.”
Answers
1. Viruses cannot reproduce on their own: Unlike living organisms, viruses cannot reproduce on their own. They need to infect a host cell and hijack the host cell's machinery in order to replicate themselves. Once they have infected a host cell, they use the cell's energy and resources to create new copies of themselves. However, they do not have the ability to reproduce outside of a host cell.
2. Viruses do not have the ability to carry out metabolic processes: Living organisms carry out metabolic processes, such as respiration and digestion, in order to obtain energy and nutrients. Viruses do not have the ability to carry out these processes on their own. They rely entirely on the host cell to provide them with energy and nutrients. In fact, viruses do not even have the necessary machinery to carry out these processes. They lack the organelles, such as mitochondria, that are responsible for energy production in living cells.
Using arrows to designate the flow of electrons, provide a detailed reaction mechanism for the dehydration of cyclohexanol.
Answers
Heating of alcohol in presence of acid, eliminates the molecule of water to produce alkene, this process is known as dehydration of alcohol.
Mechanism:
Step 1; proton from H2SO4 , coordinates the OH group of the alcohol forming protonated alcohol (oxonium ion)Step2; protonated alcohol undergoes heterolysis to form carbocation (C+) and H2O. So, (C+ ) is the intermediate.Step3; The ( C+) being highly reactive eliminates proton fromB position to form alkene.OH + 0-H2 + H₂SO4 fusou (Alcohol) (source of bet) Coronium (Carbocation) H + H + & fast 3 B B + + (major) (minor)
Treatment of alcohol with conc H2SO4 , forms alkene which upon reaction with Br2 , forms 1,2 dibromo product. It is color less in nature. This test is called as test for unsaturation because red orange coloured Br2 get changes to colourless.The mechanism as follows,OH+ H2 --> H₂SO4 o (Alcohol) (oxonium Ton) & + ola (Carbocation) Br Br2 2+ t BY Alkene Ca HIG (colourless dibromo-product)
To know more about mechanisms check the below link:
https://brainly.com/question/27921705
#SPJ1
How many types of rocks can form from the rock cycle?
1
2
3
4
Answers
Answer: 3 types
Explanation: igneous, sedimentary and metamorphic.
Answer:
3 types
Explanation:
igneous sedimentary and one more
;
Where do substrates bind to the enzyme?
A. substrate
B. activation energy
C. active site
Answers
Answer:
C. active site
Explanation:
Substrates bind to the enzyme at active site which is where the catalytic action happens.
Hope this helps, thank you :) !!
According to the Central Dogma Theory, which pathway is correct?
A. Proteins to RNA to DNA
B. DNA to RNA to proteins
C. RNA to DNA to proteins
D. DNA to proteins to RNA
Answers
A rather large population of sheep can have either hairy fleece or wooly fleece. Hairy fleece is the dominant phenotype, while wooly fleece is the recessive phenotype. If 78% of the population of sheep have hairy fleece then calculate a) the allele frequencies and b) the percentage of the population that would be heterozygous.
Answers
a) To calculate the allele frequencies, we can use the Hardy-Weinberg equation:
p^2 + 2pq + q^2 = 1
where p is the frequency of the dominant allele (H) and q is the frequency of the recessive allele (h).
We know that hairy fleece (H) is dominant and that 78% of the population has hairy fleece, so we can write:
p^2 + 2pq + q^2 = 1
p^2 + 2p(0.78) + (0.22)^2 = 1
p^2 + 1.56p + 0.0484 = 1
p^2 + 1.56p - 0.9516 = 0
Solving for p using the quadratic formula, we get:
p = (-1.56 ± √(1.56^2 - 4(1)(-0.9516))) / (2(1))
p = (-1.56 ± 1.667) / 2
Since p cannot be negative, we take the positive solution:
p = 0.553
So the frequency of the dominant allele (H) is 0.553, and the frequency of the recessive allele (h) is:
q = 1 - p = 1 - 0.553 = 0.447
b) The percentage of the population that would be heterozygous can be calculated using the equation:
2pq
where p and q are the allele frequencies. So we can substitute the values we calculated above and solve:
2pq = 2(0.553)(0.447) = 0.494 or 49.4%
So about 49.4% of the sheep population would be expected to be heterozygous for the hairy and wooly fleece alleles.
Since hairy fleece is the dominant phenotype and the frequency of this phenotype in the population is 78%, we can assume that the frequency of the dominant allele (H) is q² = 0.78, where q is the frequency of the recessive allele (h).
What does the dominant and the recessive mean ?This means that about 21.1% of the population would carry one copy of the dominant allele and one copy of the recessive allele, and would exhibit the dominant phenotype.
To solve for q, we can take the square root of both sides:
q = √0.78 ≈ 0.88
Therefore, the frequency of the recessive allele (h) is 0.12.
To calculate the percentage of the population that would be heterozygous (Hh), we can use the Hardy-Weinberg equation:
p² + 2pq + q² = 1
where p is the frequency of the dominant allele (H) and q is the frequency of the recessive allele (h).
Substituting in our values, we get:
(0.88)² + 2(0.88)(0.12) + (0.12)² = 0.7744 + 0.2112 + 0.0144 = 1
Therefore, the percentage of the population that would be heterozygous is:
2pq x 100% = 2(0.88)(0.12) x 100% ≈ 21.1%
So approximately 21.1% of the population would be heterozygous for the hairy and wooly fleece alleles.
Thus, With a frequency of 78% for the dominant phenotype (hairy fleece), we can assume that the frequency of the dominant allele (H) is q² = 0.78 and the frequency of the recessive allele (h) is 0.12. Using the Hardy-Weinberg equation, we can calculate the percentage of the population that would be heterozygous (Hh) as approximately 21.1%.
Learn more about heterozygous at :
https://brainly.com/question/30622664
#SPJ2
how does the saturation of a lipid tails of phospholipids within a membrane affect membrane fluidity?
Answers
The saturation of a lipid аcid tаil of phospholipids impаcts the fluidity of the membrаne becаuse of the intermoleculаr interаctions between the phospholipid tаils аdd rigidity to the membrаne.
The phospholipid bilаyer is composed of two lаyers of lipids. Eаch lipid contаins а hydrophobic (wаter repelling) tаil аnd а hydrophilic (wаter аttrаcting) heаd. The lipids form into а bilаyer with the hydrophobic tаils fаcing the interior of the bilаyer forming а hydrophobic region held together, in pаrt, by intermoleculаr forces between the tаils. The hydrophilic heаds form а hydrophilic region on either side of the bilаyer thаt cаn interаct with the wаter rich environments on either side of the bilаyer.
For more information about the phospholipid bilаyer refers to the link:
https://brainly.com/question/19234501
#SPJ4
Mendel's second law or fourth postulate states that alleles of different genes segregate independently of each other. At the chromosome level this is because:
Answers
Mendel's second law or fourth postulate states that alleles of different genes segregate independently of each other. At the chromosome level this is because independent assortment.
Independent assortment occurs during the formation of gametes when homologous pairs of chromosomes align randomly at the metaphase plate and separate into different daughter cells.
During meiosis I, homologous chromosomes, each containing different alleles of different genes, undergo recombination and exchange genetic material through a process called crossing over. This results in new combinations of alleles on the chromosomes. When these chromosomes segregate during meiosis II, they align independently of each other, and the distribution of one pair of alleles does not influence the distribution of another pair of alleles.
To know more about Mendel's second law
brainly.com/question/20594080
#SPJ11
What are the effects of tobacco smoke on the gas exchange system?
Answers
Answer:
The effects of tobacco smoke on the respiratory system include: irritation of the trachea (windpipe) and larynx (voice box) reduced lung function and breathlessness due to swelling and narrowing of the lung airways and excess mucus in the lung passages.
Which is the best topic sentence for a paragraph comparing and contrasting moths and butterflies?
Although moths and butterflies look alike, there are important differences between them.
Most moths rest with their wings out flat, but butterflies rest holding their wings together.
So the next time you think you see a butterfly, look twice, because it might be a moth.
Butterflies are usually more brightly colored than moths and are active during the day.
Answers
Answer:
A : Although moths and butterflies look alike, there are important differences between them.
Explanation:
I got it right in the test
Answer:
THE OTHER PERSON IS CORRECT PLS MARK THEM BRANLIEST
Explanation:
What is the answer for question 8 and 9
Answers
Answer:
8) B
9) C
hope you like the answer
thanks- :)
follow up-
Select the correct answer from each drop-down menu.
Cancer is a disease that involves uncontrolled cell division caused by a genetic mutation. It can occur in almost any region in the body. So, cancer is essentially uncontrolled ______ of _____
Blank 1:
meiosis
mitosis
regeneration
Blank 2:
embryonic stem cells
gamete cells
specialized cells
Answers
Answer:
Cancer is a disease that involves uncontrolled cell division caused by a genetic mutation. It can occur in almost any region in the body. So, cancer is essentially uncontrolled mitosis of specialized cells
Explanation:
It can occur in almost any region in the body. So, cancer is essentially uncontrolled mitosis of specialized cells. The correct options are b and c respectively.
What is cancer?Cancer is a medical condition in which cells in one portion of the body expand and multiply inconsolably.
Cancerous cells have the ability to invade and destroy healthy tissue, including organs. Cancer can start in one part of the body and spread to other parts. This is referred to as metastasis.
Cancer is caused by changes in genes, which are the basic physical units of inheritance. Genes are organized in chromosomes, which are long strands of tightly packed DNA.
Cancer is a genetic disease, which means that it is caused by changes in genes that regulate how our cells function, particularly how they grow and divide mitotically.
Thus, the correct options are b and c respectively.
For more details regarding cancer, visit:
https://brainly.com/question/14945792
#SPJ2
In Mendel's experiments, Gg is considered what genotype?
Answers
Answer:
heterozygous.
Explanation:
Organisms that have two different alleles for a gene are called heterozygous (Gg).
Which is the most likely correct sequence of events involve in the evolution of early life?.
Answers
Evolution is the slow change that takes place due to various factors leading to the formation of new characters. Its sequence is first anaerobic cells formed, photosynthesis, presence of oxygen, and finally aerobic cell.
What is the procedure of evolution?Evolution shows the adaptations of organisms according to their changing environments and results in altered genes, novel traits, and new species.
It can occur by following process:
Mutation.Gene flow.Natural selection.Non-random mating.Genetic drift.There comes first anaerobic cells, then photosynthesis and oxygen presence and then finally aerobic cell.
Thus, the proper sequence of events involve in the evolution of early life is anaerobic cell--photosynthesis--presence of oxygen--aerobic cell.
For more details regarding evolution, visit:
https://brainly.com/question/13492988
#SPJ4
The intensity of sunlight on Earth is affected by
A.) the mass of Earth
B.) the speed of Earth
C.) the number of rotations of Earth
D.) the curved surface of Earth
Answers
Answer:
The correct answer is D.) the curved surface of Earth.
Explanation:
The intensity of sunlight on Earth is affected by the curved surface of Earth, which causes the sunlight to spread out over a larger area. As a result, the intensity of sunlight is less at any given point on Earth's surface than it would be if Earth had a flat surface. This also explains why the poles receive less sunlight than the equator, as sunlight is spread out over a larger area near the poles due to the curvature of the Earth.
Factors such as the mass of Earth, the speed of Earth, and the number of rotations of Earth do not directly affect the intensity of sunlight on Earth.
dmitri ivanovski discovered microorganisms so small they could not be seen with a microscope. these organisms are called:
Answers
Microorganisms so tiny they couldn't be seen under a microscope were found by Dmitri Ivanovski. These creatures are known as viruses.
A piece of nucleic acid that has been protein-coated is what makes a virus an infectious microbe. A virus cannot reproduce on its own; instead, it must infect cells in order to use the components of the host cell to create copies of itself.
A virus's main objective is to transfer its genome to the host cell so that it can be expressed by the host cell. A fully developed infectious virus is known as a virion.
However, viruses and cell-based life have several striking similarities. For instance, they have nucleic acid genomes and share your cells' genetic code. Like cell-based life, viruses can evolve and have a range of genetic variants. Viruses, therefore, seem to be in a "questionable" area even if they do not fit the criteria of life.
To learn more about viruses, refer:-
https://brainly.com/question/29312545
#SPJ4
true or false: microfilaments are thicker than microtubules. if false, please make it a correct statement.
Answers
False. Microtubules are thicker than microfilaments.
What are microfilaments?Microfilaments, also known as actin filaments, are thin and flexible protein filaments that are present in the cytoplasm of eukaryotic cells. Microfilaments are one of the three primary types of cytoskeleton fibers, the other two being intermediate filaments and microtubules.
Microfilaments are approximately 7 nm in diameter, which is around 10 times smaller than microtubules. Microfilaments, like microtubules, are dynamic structures, meaning that they can grow and shrink rapidly depending on the cell's requirements.
What are microtubules?Microtubules are hollow, tube-like structures made up of protein subunits called tubulins. They are one of the three main cytoskeleton fibers, along with intermediate filaments and microfilaments.
Microtubules are the thickest of the three types of cytoskeleton fibers, with a diameter of approximately 25 nm. They play a variety of roles in cells, including cell division, maintaining cell shape and structure, and facilitating intracellular transport.
Learn more about Microfilaments: https://brainly.com/question/5919866
#SPJ11
Which answer choice BEST supports the idea that the Scientific Revolution questioned the established ways that Europeans understood the world around them? A During this time, philosophers and thinkers in Asia, the Middle East, and Europe developed ideas and theories about how the Universe functioned, and then used mathematics to support their ideas. B This revolution was, in part, a response to the flood of new ideas pouring into Europe as a result of its expanded contacts with the rest of the world. C Europeans were able to collect and form new knowledge, and this led to Europe's unmatched power in the centuries that followed. D This way of thinking challenged the idea that the Bible was the source of all human knowledge, both historical and scientific.
Answers
Answer:
C. Europeans were able to collect and form new knowledge, and this led to Europe's unmatched power in the centuries that followed.
Explanation:
Scientific Revolution occurs in the Renaissance period in which the transition of Europe occurs from middle age towards modern era. This change occurs due to scientific revolution in the Europe. People at that time focus on obtaining knowledge and performing new research and experiments in order to obtain more knowledge and invent new technologies which make them powerful in the coming future.
which series lists the structural components of the light-dependents reactions in order, from smallest to largest
Answers
Answer:
Chlorophyll >thylakoid> grana >chloroplast.
Explanation:
Specialized horizontal underground stem found in ferns. what is a sporangium?
Answers
Specialized horizontal underground stem found in ferns is called a rhizome. Sporangium is a structure in which spores are enclosed.
Underground stems known as rhizomes can spread either vertically or horizontally. Their nodes, from which roots or shoots develop, are surrounded by leaves (either scale-like, green leaves, or buds). They are stems rather than roots because they have internodes, tiny leaves, buds, and nodes, which are crucial parts of a stem. They are modified stems, though.
Sporangia can grow near the terminals of stems, along their sides, or in close proximity to leaves. In ferns, sporangia are often located on the abaxial surface of the leaf, or the underside, where they are tightly grouped into clusters called sori. An indusium, a type of structure, might be present across Sori. The sporangia of some ferns are dispersed over the shortened leaf segments.
To know more about sporangium, refer:
https://brainly.com/question/26817442
#SPJ4
HELPPPPPPPP ASAPPPPPPP PLEASEEE!!!!! Assignment: 01.04 Foundations of Biology Discussion-Based Assessment
The DBA (Discussion Based Assessment) is a Q&A-based conversation typically regarding 3 main concepts from the Module. ALERT; All
work in the module
Answers
Higher temperatures in the Northeast are likely to increase heat-related deaths and decrease air quality, especially in urban areas.
Who are at greatest risk?People at greatest risk include young children, the elderly, and those with pre-existing health conditions like asthma.Allergy is a disease that affects your lungs. It reasons repeated episodes of wheezing, breathlessness, chest tightness, and middle-of-the-night or early-morning coughing.
Bronchial asthma may be managed by using taking remedies and fending off the triggers that can purpose an assault. Such as pollen, dirt mites, animal fur, or feathers.
Therefore, Higher temperatures in the Northeast are likely to increase heat-related deaths and decrease air quality, especially in urban areas.
Learn more about temperature on:
https://brainly.com/question/11464844
#SPJ1
Which of the following would most likely result from a lack of implementing the Clean
Water Act?
Answers
Answer:
Typhoid Fever
Explanation:
Just got it right on CAN Vas.
Typhoid Fever likely result from a lack of implementing the Clean Water Act.
Typhoid was caused by the bacterium Salmonella typhi.It was typically contracted by drinking water tainted by the fecal wastes of infected individuals.What are the reasons for water contamination?Global warming.Deforestation.Industry, agriculture and livestock farming.Rubbish and faecal water dumping.Maritime traffic.Fuel spillages.What are the consequences of water contamination?Contaminated water becomes unfit for consumption by humans and cattle.It results in drastic reduction of fish population.Water pollution results in increased cases of water borne diseases; like cholera, diarrhea, jaundice, etc.Presence of faecal matter results in high concentration of E.coli in water which causes water borne diseases.Contamination of groundwater results in high levels of toxic materials in fruits, vegetables and grains.To know more about contamination here
https://brainly.com/question/15964651
#SPJ2
how does the gamete intra faloppian tube transfer procedure differ from in vitro fertilization
Answers
The gamete intrafallopian tube transfer (GIFT) procedure differs from in vitro fertilization (IVF) in that fertilization occurs inside the woman's fallopian tubes instead of in a laboratory setting.
In the GIFT procedure, the woman's eggs are retrieved, along with the man's sperm, through a minor surgical procedure. The eggs and sperm are then immediately transferred to the woman's fallopian tubes using a laparoscopic technique. Fertilization takes place naturally within the fallopian tubes, and the resulting embryos travel to the uterus for implantation.
On the other hand, in vitro fertilization (IVF), the most commonly known assisted reproductive technology, involves the fertilization of eggs with sperm in a laboratory dish outside the woman's body. After fertilization, the resulting embryos are cultured in the laboratory for a few days. Then, one or more embryos are transferred to the woman's uterus for implantation.
Therefore, the key difference lies in the location of fertilization: GIFT allows fertilization to occur naturally inside the woman's fallopian tubes, while IVF involves fertilization taking place outside the body in a laboratory. Both procedures aim to assist individuals or couples in achieving pregnancy, but they employ different techniques for fertilization and embryo transfer.
To learn more about fertilization, here
https://brainly.com/question/31649938
#SPJ4
Lime stone is a sedimentary rock that contains calcium this type of rock typically forms in warm shallow marine waters. Which process is involved in distributing calcium before it becomes part of the sedimentary rock?
A) tectonic movement
B) weathering
C) a biological process
D) volcanic activity
Answers
Answer:
B weathering
Explanation:
1. Bacteria. Two bacteria were placed in a dish. The number of bacteria quadruples every hour. There are now 131,072 bacteria in the dish. How many hours have passed since the original two bacteria we
Answers
To determine the number of hours that have passed since the original two bacteria were placed in the dish, we can use the fact that the number of bacteria quadruples every hour.
Starting with two bacteria, we can observe the progression:
Hour 1: 2 bacteria
Hour 2: 2 x 4 = 8 bacteria
Hour 3: 8 x 4 = 32 bacteria
Hour 4: 32 x 4 = 128 bacteria
Hour 5: 128 x 4 = 512 bacteria
Hour 6: 512 x 4 = 2048 bacteria
Hour 7: 2048 x 4 = 8192 bacteria
Hour 8: 8192 x 4 = 32768 bacteria
Hour 9: 32768 x 4 = 131072 bacteria
Therefore, it took 9 hours for the number of bacteria to reach 131,072.
To solve more questions on bacteria , visit the link below
brainly.com/question/30217998
#SPJ11
which structure would not be a component of the spermatic cord? group of answer choices ductus (vas) deferens cremaster muscle bulbourethral gland testicular nerve pampiniform plexus
Answers
The structure that would not be a component of the spermatic cord is the bulbourethral gland (option 3).
The spermatic cord is a structure that extends from the abdominal cavity into the scrotum and contains various components related to the male reproductive system. It consists of several structures that facilitate the transport and support of the testes. The components of the spermatic cord include the ductus (vas) deferens, which carries sperm from the epididymis to the urethra, the testicular nerve, which provides innervation to the testes, and the pampiniform plexus, a network of veins that helps regulate testicular temperature. The cremaster muscle is also part of the spermatic cord and helps to raise and lower the testes.
However, the bulbourethral gland (option 3), also known as Cowper's gland, is not a component of the spermatic cord. It is located within the pelvis and produces a lubricating fluid that is released during sexual arousal.
Know more about bulbourethral gland here: https://brainly.com/question/31603955
#SPJ11