What is a volvox colony?How does it survive?
Answers
Answer:
Volvox is a genus of green algae. Volvoxes are free-floating single-cellular algae but typically stay together as spherical colonies (or balls) of 500-50,000 cells. They can live in a variety of freshwater habitats, including ponds, pools, and ditches.
Explanation:
Related Questions
45. which substance competes with the neuromodulator adenosine? and where on this figure would it act?
Answers
Adenosine, a neuromodulator Abstract The most popular psychoactive substance, caffeine, is an antagonist of the adenosine receptor.
Which medications are neuromodulators?Neuromodulators are chemicals that modify the propagation of nerve impulses. Anticonvulsant medications, ketamine, nefopam, capsaicin, and cannabis are some of those occasionally used to treat pain.
Dopamine's role as a neuromodulator: why?Dopamine functions as a neuromodulator; tiny clusters of dopaminergic neurons inside the brainstem extend axons through a large portion of a cerebral lobe, medial temporal lobe, or basal ganglia, wherein dopamine release affects the function of regional neuronal populations.
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Please help ASAP!!!
A gene has four possible
alleles for coat color and
there are four different colors
of animal coats found in a
given population. What
causes this?
A. codominance
B. incomplete dominance
C. multiple alleles
Answers
Answer:
C.
Explanation:
it says four possible alleles. which is Multiple alleles
What is the flow of molecules in passive transport?
Answers
Answer:
The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration.
Explanation:
hope this helps :D
Answer:
hhggvfvgfxbvvg 343423bvvfftdx455dfdx565rbhfgfgy3geyr
Explanation:
TRUE/FALSE. An increase in the number of phytoplankton in an aquatic ecosystem is always beneficial.
Answers
The given statement "An increase in the number of phytoplankton in an aquatic ecosystem is always beneficial" is False.
What is Phytoplankton?
Phytoplankton are single-celled aquatic plants, usually found in aquatic environments such as oceans, lakes, and rivers. They form the basis of the aquatic food chain, and therefore, they play a significant role in aquatic ecosystems.
The increase in the number of phytoplankton is not always beneficial for the aquatic ecosystem.
When the number of phytoplankton increases significantly, then the concentration of dissolved oxygen decreases. It leads to the formation of hypoxic or anoxic conditions. These conditions are dangerous for aquatic animals like fish, and they can't survive in these conditions.
Because phytoplankton consume dissolved oxygen in the water and the high concentration of phytoplankton requires more oxygen to decompose. So, the increase in the number of phytoplankton is not always beneficial for the aquatic ecosystem.
What is an Aquatic Ecosystem?
Aquatic ecosystems are a combination of various organisms and non-living components that are found in the water. They can be either freshwater or saltwater.
These ecosystems can be divided into two main groups; marine and freshwater ecosystems.
Aquatic ecosystems are an essential part of the biosphere, and they play a crucial role in maintaining the balance of nature.
"An increase in the number of phytoplankton in an aquatic ecosystem is always beneficial" is Incorrect
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22. Highlight the correct answer of each underlined pair. UV radiation has shorter longer
wavelengths and
lower/higher energy than visible light and infrared radiation.
Answers
Answer:
shorter and higher
Explanation:
UV is further along in the EM spectrum so has a higher frequency and shorter wavelengths than visible light.
TRUE/FALSE. a trait with high heritability responds strongly to selection, whereas a trait with low heritability responds slowly or not at all.
Answers
False. A trait's heritability only reflects the proportion of variation in the trait that is due to genetic factors, and does not determine the responsiveness of the trait to selection.
A trait with high heritability can still have low responsiveness to selection if the environment plays a major role in determining the phenotype. On the other hand, a trait with low heritability can still respond quickly to selection if the underlying genetic variations have large effects on the phenotype. However, heritability it does not predict the ease or rate at which a trait may change in response to selection pressure. The responsiveness of a trait to selection depends on various factors, such as the presence of genetic variation, the size of the effect of genes on the phenotype, and the strength of environmental effects on the trait.
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How are the circulatory and digestive systems related to respiration?Group of answer choices
A.) Cells do not need oxygen and glucose.
B.) Oxygen and glucose are carried to cells by blood. During photosynthesis, oxygen reacts with glucose to release energy.
C.) Oxygen and glucose are carried to cells by blood. During respiration, oxygen reacts with glucose to release energy.
Answers
Answer:
Hey! im pretty sure the answer is B i did a test on this if its not B Then C!
Explanation:
where is alcohol metabolized
Answers
Answer:
In the Liver
Explanation:
This also includes the brain, pancreas and stomach.
Can anyone please help with this? 20 points please
Answers
Answer:
Corn plant is a producer
Explanation:
A pesticide was introduced on a farm to kill insects eating the corn crop. The farmer realized that in week 1 after using the pesticide, most of the insects were killed but by week 3 the population of insects increased and the pesticide no longer kills the insects. What is the reason for that observation?
Answers
Hello,
The observation that the pesticide was effective in killing insects in week 1 but became ineffective by week 3 is likely due to the development of resistance in the insect population.
When a pesticide is introduced, it may be very effective in killing a large proportion of the target insects. However, some insects may have genetic variations that allow them to survive exposure to the pesticide. These insects then go on to reproduce, passing on the genes that allowed them to survive to their offspring. Over time, the proportion of insects in the population with these resistant genes increases, making the population as a whole less susceptible to the pesticide. This is known as pesticide resistance.
Insects can develop resistance to pesticides through a variety of mechanisms, including mutations that make them less susceptible to the toxic effects of the pesticide, increased detoxification of the pesticide by enzymes in their bodies, or changes in their behavior that allow them to avoid exposure to the pesticide.
To combat pesticide resistance, farmers may need to use different pesticides or alternative methods of pest control. They may also need to use pesticides in a targeted and judicious manner, rotating different types of pesticides to avoid overuse of any one type and minimize the selection pressure for resistance.
for Mendel's studies, why was it important that his subjects, pea plants, could reproduce quickly and produce many offspring?
Answers
It is important for Mendel's subject to reproduce quickly so that he could complete many experiments in a short period of time. Many offspring are needed so as to study the phenotypes and genotypes in detail.
Mende's ExperimentMendel carried out several breeding experiments using the pea plant. Through his series of experiments, Mendel was able to formulate the laws of genetics, otherwise known as the law of segregation and the law of independent assortment respectively.
Mendel made use of the pea plant for his breeding experiments for a couple of reasons:
The pea plant shows distinct and contrasting characters. It is either one or the other, no in-betweens.The pea plant reproduces quickly. With this, Mendel was able to conduct several experiments within a short period.The pea plant produces many offspring in a single generation. This enable Mendel to study the traits in details. Both the physical and genetic traits were studied using enough population.
Thus, it is quite important that the subject used by Mendel reproduced quickly and produced many offspring so as to be able to conduct several breeding experiments within a short period as well as study the traits in detail.
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Define magnification?...pleaz
Answers
Answer:
The action or process of magnifying something
Magnifying: to make something appear larger
Im studying human scalp does anyone know what this is?
Answers
The picture represents the atypical mole or also known as dysplastic nevi. Such types of moles are looking unusual and have irregular features under the microscope.
What is a Human scalp?A human scalp may be defined as the fraction of the envelope of the human head usually covered with hair in both sexes. It is the region that is composed of soft tissue layers that cover the cranium.
The dysplastic nevi are although benign in nature but significantly have a potent threat to melanoma which is a dangerous form of skin cancer.
Such types of moles are painful, itching, crusting, and swelling with the duration of time. They are required to be checked immediately by a trusted dermatologist.
Therefore, the picture represents the atypical mole or also known as dysplastic nevi.
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In plants, the vascular tissue made of dead cells that transport water and minerals from the roots is called.
Answers
Answer: xylem
Explanation: xylem is a plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support.
A pedigree is shown above that tracks a trait through four generations in a family. Based on the inheritance patterns of this trait, which statements accurately justify that this is a sex-linked recessive trait? Select all that apply.
A) Individuals 1-1 and 11-4 are carriers.
B) The trait is passed from fathers to sons.
C) Males are being affected more frequently than females.
D) The trait is expressed on a chromosome other than the X or Y.
E) The trait appears in later generations after being absent in one generation.
Answers
Answer:
The answer above is only one of the answers. The answers are A, C, and E! I did the USATestPrep and those were the answers. Mark as brainliest plz!
Explanation:
Summarize your first NASA spinoff technology in the answer space. Use the Insert Image button to add an image file.
Answers
One of the first interesting NASA Spinoff Technology is the Drill Bits that are able to break off and retain rock samples. They are then collected on Perseverance and flown to earth for the use of geologists.
What is NASA Spinoff Technology?This is a publication from the National Aeronautics and Space Administration that shows the technology used by NASA to the public.
NASA has shown about fifty technologies each year since 1976 in this annual publication.
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What are the two factors that determine the boundaries of a biome?.
Answers
Answer:
temperature and precipitation
A tall pea plant (Tt) is crossbred with a short pea plant (tt). The following Punnett square shows the separated alleles for two pea plants.
Punnett square showing female parent across the top with a phenotype of tall and a genotype of Tt and a male parent across the side with a phenotype of short and a genotype of tt. Inside the top left box 1 is written, inside the top right box 2 is written, inside the bottom left box 3 is written, inside the bottom right box 4 is written.
Which of the following shows the correct match of the box numbers and the genotype of the offspring?
1 = Tt; 2 = tt; 3 = Tt; 4 = tt
1 = Tt; 2 = Tt; 3 = Tt; 4 = Tt
1 = Tt; 2 = Tt; 3 = tt; 4 = tt
1 = Tt; 2 = tt; 3 = tt; 4 = tt
Answers
Answer:
the first option is correct
1 = Tt; 2 = tt; 3 = Tt; 4 = tt
Which type of biological molecules often serve as enzymes that speed up chemical reactions?
O nucleic acids
O carbohydrates
O proteins
O lipids
Answers
Answer:
C. Proteins
I believe
The absence of blowflies at a death scene indicates _____. the death took place during hot weather the death took place somewhere else, and the body was moved to the scene later the suspect was able to keep the flies away with insect repellant the death took place during cold weather
Answers
Answer:
The absence of blowflies at a death scene indicates that the death took place during cold weather or the suspect was able to keep the flies away with insect repellent.
please answer this question below:
Answers
Hope this helped :)
This ecosystem has very few plants and a limited number of animal species. what two non-living factors limit the plants and animals that live here?
sandy soil and lots of rainfall
little sunlight and little water
sandy soil and lots of rainfall
high temperature and little rainfall
Answers
What impacts might you expect on your lifestyle once our society arrives at peak oil? What steps do you think we should take to avoid energy shortages in a post-peak -oil future?
Answers
Peak oil affects the lifestyle of organisms to a major extent. It is directly to the overproduction of higher levels of toxic compounds when ingested by organisms through air leads to problems like respiratory damage, cancer risk, liver damage, reproductive threat, etc.
What is Peak oil?Peak oil may be defined as the speculative point in time when the global production of oil acquires its maximum rate.
The steps that should be taken to avoid energy shortages in a post-peak -oil future are as follows:
Increase the dependency on solar energy.Limit the use of non-renewable sources of energy.Save major aspects of energy for the future.Conserve and plant more trees.Individuals need to make good habits of the utilization of energy-saving components and appliances that consume very less energy.Therefore, it is well described above.
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How does a rain shadow affect the weather?
Answers
A rain shadow is a patch of land that has been forced to become a desert because mountain ranges blocked all plant-growing, rainy weather. On one side of the mountain, wet weather systems drop rain and snow. On the other side of the mountain—the rain shadow side—all that precipitation is blocked.
Explanation:
Which describes the first step in protein synthesis? A. DNA is transcribed to mRNAB. the DNA molecule unzips between the base pairsC. amino acids are linked in a long chainD. tRNA brings amino acids to the ribosome
Answers
The first step in protein synthesis is when the DNA is transcribed to mRNA.
A population culture begins with 15 strands of bacteria and then doubles every 4 hours. This can be modeled as 15(2)^((t)/(4)), where t is time in hours. How many strands of bacteria are present at 12
Answers
At 12 hours, there are 120 strands of bacteria present.
The population of bacteria can be modeled using the equation P(t) = \(15(2)^(t/4)\), where P(t) represents the number of strands of bacteria at time t in hours.
To find the number of strands of bacteria at 12 hours, we substitute t = 12 into the equation:
P(12) = \(15(2)^(12/4)\)
P(12) = \(15(2)^3\)
P(12) = 15(8)
P(12) = 120
Therefore, at 12 hours, there are 120 strands of bacteria present.
It's important to note that the given population model assumes exponential growth, where the number of strands doubles every 4 hours. Starting with an initial population of 15 strands, the exponent in the equation (t/4) represents the number of doubling periods that have occurred. Each doubling period corresponds to 4 hours of time.
In this case, at 12 hours, three doubling periods have occurred (12/4 = 3). Starting with the initial 15 strands, each doubling period doubles the population, resulting in a final count of 15 * \(2^3\) = 120 strands of bacteria at 12 hours.
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How does latitude affect Europe's climate and vegetation in specific regions?
Answers
Answer:
How does latitude affect Europe's climate and vegetation in specific regions? Give examples. Cold winters and short summers characterize high latitude regions, while hot summers and bitterly cold winters characterize low latitude regions.
Define metamorphosis
Answers
Explanation:
(in an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages.
"the persistence of the larval tail during metamorphosis"
or
a change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
"his metamorphosis from presidential candidate to talk-show host"
Answer:
Metamorphosis is the change in physical form, appearance, structure, or substance.
Explanation:
Identify each of the following as an example of a scientific theory, a model, or a hypothesis. - In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a - A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a - Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a - The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a Why is it important for biologists and people in biology-related fields to learn physics? Select all that are correct. To learn how to solve complex problems To learn how to communicate scientific ideas To learn how to apply fundamental principles with logic and reasoning To learn how to plug numbers into equations and calculate answers To learn how to use math in science and make estimates To learn how to interpret and apply different representations of information To learn how to interpret quantitative measurements
Answers
- In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a model.
- A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a hypothesis.
- Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a scientific theory.
- The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a model.
It is important for biologists and people in biology-related fields to learn physics because:
- To learn how to solve complex problems
- To learn how to communicate scientific ideas
- To learn how to apply fundamental principles with logic and reasoning
- To learn how to interpret and apply different representations of information
- To learn how to interpret quantitative measurements
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Identify the following situations as a hypothesis, a theory, or a model.
i. In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are.
ii. Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations.
iii. A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer.
A) i. - hypothesis; ii. - theory; iii. - model
B) i. - model; ii. - theory; iii. - hypothesis
C) i. - theory; ii. - hypothesis; iii. - model
D) i. - model; ii. - hypothesis; iii. - theory
E) i. - theory; ii. - model; iii. - hypothesis
The heterokaryotic phase of a fungal life cycle is
A) a stage in which the hyphae contain only one type of haploid nucleus.
B) a stage in which hyphae contain two, genetically different, diploid nuclei.
C) a stage in which hyphae contain two, genetically different, haploid nuclei.
D) a triploid stage formed by the fusion of a diploid nucleus with the haploid nucleus of a
compatible hypha.
Answers
The heterokaryotic phase of a fungal life cycle is a stage in which hyphae contain two genetically different haploid nuclei.
Option C is correct. The heterokaryotic phase refers to a stage in the fungal life cycle where hyphae contain two genetically different haploid nuclei. Heterokaryosis is a characteristic feature of many fungi and plays a crucial role in their reproductive cycle and genetic diversity.
Fungi have a unique mode of sexual reproduction called plasmogamy, where two compatible hyphae fuse. During this process, the cytoplasm of two different mating types (represented by different haploid nuclei) merges, forming a heterokaryon. This heterokaryotic mycelium contains hyphae with genetically distinct haploid nuclei from the two parental strains.
The presence of genetically different haploid nuclei within the hyphae allows for genetic recombination and variation. In the subsequent stages of the fungal life cycle, such as karyogamy (fusion of nuclei) and meiosis, the heterokaryotic phase gives rise to the formation of new spores with different genetic combinations, promoting genetic diversity and adaptation to changing environments.
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