A scientist claims that Elysia chlorotica, a species of sea slug, is capable of photosynthesis. Which of the following observations provides the best evidence to support the claim?
Answers
A scientist claims that Elysia chlorotica, a species of sea slug, is capable of photosynthesis. Among the following observations (B) provides the best evidence to support the claim.
Elysia Chlorotica will continue to develop normally whether it is placed near food sources with or without light. However, if it is placed in light without any sources of nutrition, it should not grow because it would not be able to perform photosynthesis. Since it does grow, this indicates that there is a process similar to photosynthesis involved in the growth of Elysia. The process of producing food and energy in the presence of light, water, and atmospheric CO2 is known as photosynthesis.
So the correct option is (B) Elysia Chlorotica grows when exposed to light in the absence of other food sources.
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Related Questions
which of the following is not part of protein synthesis? a replication b translation c transcription d all of these
Answers
Answer:
Replication is not part of protein synthesis. Replication is the process by which DNA is copied before cell division, whereas protein synthesis is the process by which proteins are made from the information in DNA. Translation and transcription are the two main steps of protein synthesis.
PLZ HELP 40PTSThe table below shows the mass of some horse fossils.
Horse Fossil Record
Horse Fossil Mass (kg)
A 80
B 270
C 150
D 50
Ancient horses had less mass than present-day horses. The mass of the present-day horse is about 500 kilograms. What is the correct order of evolution of the horse starting from the youngest fossil?
1. A C D B
2.B D C A
3. D A C B
4. B C A D
Answers
Answer:
D and 4
Explanation:
Answer:
Its D and the last one is 4
Explanation:
aerobic fitness is how well the body transports and utilizes _______ for energy.
Answers
Answer: Oxygen
Explanation: There's no explanation to go with the answer, sorry.
there are several types of cancer depending on their organ of origin but they can be organized into categories based on the specific cell and origin of which the abnormal growth began. cancers can be classified as carcinomas, sarcoma, leukemias, lymphomas, multiple myeloma, melanoma, and brain and spinal cord tumors
Answers
Carcinoma refers to a malignant neoplasm of epithelial origin or cancer of the internal or external lining of the body.
What is Carcinoma ?In epithelial tissue, cancerous growths are known as carcinomas. The majority of your organs, internal body pathways (such your esophagus), and skin are all lined with epithelial tissue. The majority of malignancies that affect your skin, breasts, kidney, liver, lungs, pancreas, prostate gland, head, and neck are carcinoid tumors.
Most people categorize different types of cancer according to where they originate, although this is only one way to do so. According to the sorts of tissues where cancer cells first develop, scientists also categorize malignancies.
80% to 90% of all cancer diagnoses are for carcinoma, which is the most prevalent type of cancer. Carcinoma develops in the epithelial tissue that lines your skin, internal organ passages, and organs.
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What important mathematical manipulations should be performed on qualitative data?
Answers
Explanation:
graphing and addition
A microbiology student Gram-stained the yeast, S. cerevisiae, producing a sample with cells colored purple, pink, brown, and green. Explain why this organism produced results that deviate from typical purple or pink Gram-stained cells.
Answers
This organism produced results that deviate from typical purple or pink Gram-stained cells because the peptidoglycan variations in the cells are visible by gram staining. S. cerevisiae differs from other bacteria in that it lacks a lipid layer and is both gram-positive and gram-negative, giving the sample's cells colors of purple, pink, brown, and green.
Gram staining is a method frequently used to distinguish between two sizable groups of bacteria based on the distinct components of their cell walls.
By staining these cells red or violet, the Gram stain method distinguishes between Gram positive and Gram negative groupings.
The crystal violet used to stain the cells of gram-positive bacteria is retained by the presence of a thick layer of peptidoglycan in their cell walls.
A thinner peptidoglycan wall in Gram negative bacteria causes them to stain red instead because it does not hold the crystal violet throughout the decolorizing process.
Because the peptidoglycan differences in the cells can be seen by gram staining, this organism generated results that differ from the conventional purple or pink Gram-stained cells.
S. cerevisiae, which is both gram-positive and gram-negative and distinguishes itself from other bacteria by lacking a lipid coating, gives the sample's cells colors of purple, pink, brown, and green.
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the lungs do not normally collapse because of group of answer choices their characteristic elastic recoil both surfactant and intrapleural pressure none of the choices are correct intrapleural pressure surfactant
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The lungs do not normally collapse because of both surfactant and intrapleural pressure.
The two spongy, pinkish-gray organs in your chest are called lungs. Air enters your lungs when you inhale (breath), and the oxygen in that air travels to your blood. A waste gas called carbon dioxide travels from your blood to your lungs at the same time and is exhaled (breathed out).
The pressure drop lowers the intrapulmonary pressure as well, which causes the lungs to open up and take in more air. This action is the opposite after the timer expires. The pleural cavity's negative pressure acts as a suction to prevent the lungs from collapsing.
The lung cells secrete surfactant, which distributes throughout the alveolar tissue. By reducing surface tension, this chemical facilitates breathing by preventing the alveoli from collapsing following exhalation.
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The farmer then crosses
two of the pink flower
plants from the above
cross. What will the
genotype and phenotype
ratios be in the offspring?
Complete the cross on the
right.
Answers
4. Exercise 3.4. Genetic Testing and Insurance Prices. Suppose the likelihood that a person will get disease X is determined in large part (but not exclusively) by his or her genes. Initially, it Is impossible to determine who carries the gene for the disease, and many people spend $500 on special health insurance to cover the costs of treatment for the disease. Suppose scientists uncover the gene responsible for the disease and develop a simple test for the gene. (Related to Application 3.) a. Suppose the government passes a law that prevents insurance companies from getting the results of a customer's genetic test for X. Will the new price of X insurance be greater that or less than $500 ? b. Suppose insurance companies have access to the results of genetic tests and they require all customers to get the test. How will the insurance company change its price of X insurance?
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The first scenario's price of X insurance will be greater than $500, while the second scenario's price of X insurance depends on the results of the genetic test.
a) If the government passes a law that prevents insurance companies from getting the results of a customer's genetic test for X, the new price of X insurance will be greater than $500.
b) If insurance companies have access to the results of genetic tests and they require all customers to get the test, the insurance company will change its price of X insurance as follows: if the test shows that a customer has the gene, the insurance company will raise the price of insurance to $800 to cover the expected treatment cost of $10,000 (with probability 1). In contrast, if the test shows that a customer does not have the gene, then the insurance company will lower the price of insurance to $100 to cover only administrative costs, assuming there is no risk of developing the disease.
According to these two scenarios, the first scenario's price of X insurance will be greater than $500, while the second scenario's price of X insurance depends on the results of the genetic test.
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what possible results occur when a cell receives instructions from two different hormones at the same time?
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Possible results of a cell receiving instructions from two different hormones include synergistic, permissive, antagonistic, additive, or modulatory effects.
When a cell receives instructions from two different hormones at the same time, the possible results depend on the type of hormones involved and the signaling pathways they activate in the cell. There are several possible outcomes:
Synergistic effect: When the two hormones have a synergistic effect, their combined effect is greater than the sum of their individual effects. Permissive effect: When one hormone enhances the responsiveness of a cell to the other hormone, it is called a permissive effect. Antagonistic effect: When the two hormones have opposing effects, it is called an antagonistic effect. Additive effect: When the two hormones have independent effects that are additive, their combined effect is simply the sum of their individual effects. Modulatory effect: When one hormone modulates the response to the other hormone, it is called a modulatory effect.Learn more about the hormones at
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What would happen if you mutated estrogen receptors so that they were no longer capable of recognizing estradiol? Select one: a. The person would stop producing estrogen. O b. Cells in this person's body would respond to testosterone instead. O c. Cells in this person's body would no longer respond to estrogen; they would be estrogen insensitive. O d. There would be no change in how this person's body responded to hormones, and would respond normally to estrogen
Answers
If estrogen receptors were mutated and could no longer recognize estradiol, the cells in this person's body would become estrogen insensitive.
Estrogen receptors play a crucial role in mediating the effects of estrogen in the body. When estrogen binds to its receptors, it triggers a cascade of cellular responses. If the estrogen receptors were mutated and unable to recognize estradiol, the cells in this person's body would no longer respond to estrogen.
As a result, the person would become estrogen insensitive. This means that the normal physiological effects of estrogen, such as regulating the menstrual cycle, maintaining bone density, and supporting reproductive functions, would be impaired or absent.
However, this mutation would not cause a switch in response to testosterone or any other hormone. It would simply lead to a loss of responsiveness to estrogen specifically.
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Ype the correct answer in the box. Spell all words correctly. What is the process of using natural resources efficiently to ensure their availability for future generations known as? is the process of using natural resources efficiently to ensure their availability for future generations.
Answers
Answer:
The correct answer is - Sustainable development.
Explanation:
Sustainable development is the process of using or utilizing the natural resources in the present in such an efficient way that there will be resources for future generations without compromising their needs.
It is essential in the current situation as people overexploiting the natural resources that it is quite possible there will very few resources will be left for future generations.
I NEEEEDDD HEELP PLZZZ
Answers
Answer:
1 red, 2 pink, 1 white
Explanation:
RW x RW = 1 RR, 2 RW, 1 WW
I assume that RR is red, RW is pink, and WW is white
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What might be a consequence of destroying a wetland
Answers
Answer:
Destroying or degrading wetlands can lead to serious consequences, such as increased flooding, extinction of species, and decline in water quality. We can avoid these consequences by maintaining the valuable wetlands we still have and restoring lost or impaired wetlands where possible.
Explanation:
Answer:
Destruction of wetlands increases flooding, a decline in water quality, and extinction in species. And it can also lead to an increases occurrence of algae blooms which are caused by nutrient overload from land adjacent to a wetland
Explanation:
How do products and reactants of photosynthesis and cellular respiration relate?
Answers
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
how do estrogen and progesterone play a role in feedback mechanisms
Answers
Answer:
During most of the menstrual cycle, estrogen and progesterone provide negative feedback to the hypothalamus and pituitary gland. This keeps their levels more or less constant. During days 12–14, however, estrogen provides positive feedback to the hypothalamus and pituitary gland!
why are fermentation reactions important for cells? they regenerate nad so that glycolysis can continue to operate. they produce alcohol, which enhances the permeability of their mitochondrial membranes to proton translocation. they allow the cell to conserve oxygen for the citric acid cycle. they generate oxygen.
Answers
Cells need fermentation reactions because they replenish NAD+ so that glycolysis can continue to function.
Cells require fermentation events in order to continue producing energy even when there is no oxygen present. Glycolysis, or the breakdown of glucose, is converted into pyruvic acid during cellular respiration when oxygen is present. Since oxygen is not needed for fermentation, it is anaerobic. NAD+ will be replenished by fermentation using the NADH + H+ generated during glycolysis. Cells can continue producing ATP through glycolysis after fermentation. A result of fermentation is lactic acid. In fermenting cells, lactic acid will accumulate and eventually restrict the quantity of fermentation that may take place.
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You want to determine whether short wings in fruit flies are the result of a dominant or recessive mutation. You cross a short-winged fly stock with a long-winged fly stock (which is considered to be wild type or / ). The progeny have a 1:1 ratio of short to long wings. You then allow the F1 short-winged flies to mate. The F2 progeny have a phenotypic ratio of 3:1 short to long wings. Short wings are likely the result of:
Answers
Answer:
a dominant mutation
Explanation:
A monohybrid testcross is a cross-breeding experiment used to determine if an individual exhibiting a dominant phenotype is homo-zygous dominant or heterozygous for a particular phenotypic trait (in this case, wing length). In a monohybrid testcross, a 1:1 phenotypic ratio shows that the dominant parental phenotype was a heterozygote for a single gene that has complete dominance. Moreover, a 3:1 ratio in the F2 is expected of a cross between heterozygous F1 individuals, which means that 75% of individuals with short wings have the dominant allele that masks the expression of the long-wing trait (i.e. the recessive allele).
what is the scanning and tunneling electron microscope used for
Answers
The scanning tunneling microscope (STM) and the atomic force microscope (AFM) are two powerful tools used in the field of nanoscience to visualize and manipulate matter at the atomic scale. STM measures the current that flows between a probe and the surface of a material while AFM records the forces between the probe and the surface.
:1. Scanning Tunneling Microscope (STM)A scanning tunneling microscope is an instrument that is used to image and manipulate materials at the atomic and molecular scale. STM measures the current that flows between a probe and the surface of a material, providing a 3D image of the surface with atomic resolution.
2. Atomic Force Microscope (AFM)An atomic force microscope is a type of scanning probe microscope that images the surface of a material by measuring the forces between the probe and the surface. Unlike STM, AFM can be used to image non-conducting materials, such as biological samples, and can also be used to measure mechanical properties such as stiffness and adhesion.
3. Uses of STM and AFMThe STM and AFM are used extensively in the field of nanoscience to study and manipulate matter at the atomic scale. They are used in a wide range of applications, including materials science, biology, physics, and chemistry.
STM and AFM can be used to investigate surface properties of materials, such as surface roughness, defects, and electronic properties. They can also be used to manipulate materials at the atomic and molecular scale, for example, by moving atoms or molecules around to create new structures.
:Scanning and tunneling electron microscope is a scientific instrument used to study the surface properties of materials at the atomic scale. It works by scanning a sharp probe over the surface of a material and measuring the current that flows between the probe and the material.
The scanning tunneling microscope (STM) and the atomic force microscope (AFM) are two powerful tools used in the field of nanoscience to visualize and manipulate matter at the atomic scale. STM measures the current that flows between a probe and the surface of a material while AFM records the forces between the probe and the surface. These instruments have revolutionized our understanding of the physical and chemical properties of materials, as well as providing new tools for the development of nanotechnology.
STM and AFM are used extensively in the field of nanoscience to study and manipulate matter at the atomic scale. They are used in a wide range of applications, including materials science, biology, physics, and chemistry. STM and AFM can be used to investigate surface properties of materials, such as surface roughness, defects, and electronic properties. They can also be used to manipulate materials at the atomic and molecular scale, for example, by moving atoms or molecules around to create new structures.
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What do similarities in the structures of embryos of different species
suggest?
Answers
Answer:
B. that those species share a common ancestor
Explanation:
Please answer the questions in the picture for 30 pts
Answers
Answer:
For the barchart the answer is D,October
what type of fog results when warm, moist air moves over a cold surface?
Answers
The type of fog that results when warm, moist air moves over a cold surface is called "advection fog."
Advection fog occurs when warm, moist air from one region moves horizontally and comes into contact with a colder surface, such as the ground or a body of water.
As the warm, moist air encounters the cold surface, it cools down rapidly. The cooling causes the moisture in the air to condense into tiny water droplets or ice crystals, leading to the formation of a foggy layer near the ground.
Advection fog is common in coastal areas where warm ocean currents collide with cold offshore currents or when warm air flows over colder land surfaces.
Advection fog tends to be persistent and can reduce visibility significantly. It often forms in a relatively large area and can persist for hours or even days until the temperature and moisture conditions change.
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3. A gene has the base sequence that starts with GAC TGA CGA TTA.
a) What would be the complementary DNA strand formed from this DNA?
(ctg acr get aat)
b) What would be the mRNA base sequence formed from this DNA sequence? (3 points)
(I need help on B)
Answers
The complementary base sequence is CTG ACT GCT AAT whereas the mRNA is CUG ACU GCU AAU.
What is RNA?The RNA is a complementary nucleic acid sequence of a DNA strand obtained from the process of transcription.
In RNA, Thymine bases are replaced by Uracil bases (other nucleotide bases are equal to DNA sequence).
In conclusion, The complementary base sequence of this gene is CTG ACT GCT AAT and the mRNA encoded from this sequence is CUG ACU GCU AAU.
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If the half-life of carbon 14 is about 5730 years, then a fossil that has one-sixteenth the normal production of carbon-14 to carbon-12 should be about how many years old?
Answers
A fossil that has one-sixteenth the normal production of carbon-14 to carbon-12 is most likely very old. This is because carbon-14 has a relatively short half-life of 5730 years, meaning that after this amount of time, half of the amount of carbon-14 in an organism or object would have already decayed.
Since the fossil being discussed has one-sixteenth of the normal production of carbon-14 to carbon-12, this would suggest the fossil is at least 8 times the half-life, or 45,840 years old. Carbon-14 is necessary to measure the age of an object, and due to the fact that this fossil has only one-sixteenth of the normal carbon-14, it can be deduced that it is very old.
It is also possible that the fossil is much older than this calculation, but because of the short half-life of carbon-14, any other amounts which may have been present before the 45,840 year mark has decayed away. In conclusion, a fossil that has one-sixteenth the normal production of carbon-14 to carbon-12 is estimated to be 45,840 years old or older.
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which of the following are members of the hamstring group? group of answer choices adductor longus and adductor magnus gluteus maximus and rectus femoris biceps femoris and rectus femoris biceps femoris, semitendinosus, and semimembranosus semimembranosus, semitendinosus, and gastrocnemius
Answers
The biceps femoris, semitendinosus, and semimembranosus are members of the hamstring group.
What is the definition of hamstring?In human anatomy, the hamstring is one of three hamstring muscles located between the hip and knee (from inside to outside: semimembranosus, semitendinosus, biceps femoris). The hamstrings are an area that is prone to injury.
The general criteria for all hamstring muscles are:
The muscle should come from the ischial tuberosity. Muscles should be used at the knee joint, tibia, or fibula.The muscle is innervated by the tibial branch of the sciatic nerve.The muscles are involved in knee flexion and hip extension.To know more about hamstring, visit:
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A cell can survive without its membrane intact.
A. True
B. False
Answers
Answer:
false, a cell CANNOt survive
how do you abbreaviate adenosine triphosphate
Answers
Answer:
ATP
Explanation:
Question 2 of 10
Why is it necessary for meiosis to produce cells with fewer chromosomes?
A. It saves energy for the organism to produce fewer chromosomes.
B. Asexual reproduction requires fewer chromosomes than sexual
reproduction
C. If it did not, the chromosome number would double in each
generation
D. Organisms reproduce sexually by joining two tetrads together.
Answers
The correct option is C. If it did not, the chromosome number would double in each generation
The following information should be considered:
It is significant for meiosis to generate cells with fewer chromosomes as it is not so the number of chromosome should be double in each and every generation. Due to this, the other options are incorrect.learn more: https://brainly.com/question/3617478?referrer=searchResults
4. The temperature in \( \# 3 \) is fresh water's temperature of maximum density. a. lower than b. equal to c. higher than
Answers
The given statement “The temperature in # 3 is fresh water's temperature of maximum density” means that the temperature at point 3 has a density of maximum density compared to other points of fresh water. So, the temperature at point 3 is equal to fresh water's temperature of maximum density. Therefore, the answer is option b. equal to.
Water is known as the only substance on earth that exists in all three forms, i.e., solid, liquid, and gas. Moreover, the density of water is also unique compared to other substances. Density is the property of a substance that measures the relationship between the mass and volume of a substance. The density of water varies with temperature and pressure. So, the density of water is always higher than that of gases but lower than most solids.
The density of fresh water at standard atmospheric pressure is around 1000 kg/m³, whereas seawater has a density of around 1025 kg/m³ at the surface. The density of water at different temperatures: Water has a unique density-temperature relationship, meaning the density of water varies with temperature.
At 4 °C, fresh water has the highest density, and as the temperature rises or falls below this point, the density of water decreases. So, water has an anomalous density-temperature relationship. Hence, b is the correct option.
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Que aumento se tiene de una muestra que se observa con un ocular de 10 y un objetivo de 40?
a) 640 b) 1040 c) 400
Answers
Answer:
C
Explanation: