The photoreceptor that allows plants to detect day length is called phytochrome.
Explanation:The photoreceptor that allows plants to detect day length is called phytochrome. Phytochrome is a protein covalently bonded to a light-absorbing pigment called a chromophore, and together they are known as a chromoprotein. Plants use the Pr/Pfr ratio of phytochrome at dawn to determine the length of the day/night cycle, allowing them to detect the change of season and adjust their physiology accordingly.
Final answer:
Phytochrome is the photoreceptor plants use to detect day length, aiding in photoperiodism, which is essential for recognizing seasonal changes and determining when to conduct crucial activities like flowering.
Explanation:
The photoreceptor that allows plants to detect day length is called phytochrome. Plants can sense the time of day and time of year by sensing and using various wavelengths of sunlight. The phytochrome molecules in plant leaves can convert between forms that absorb red light (Pr) and far-red (Pfr) light. At dawn, these molecules convert to the active Pfr form, which can remain in that form until sunset. At night, the Pfr slowly reverts to the Pr form. By measuring the ratio of Pr to Pfr at dawn, plants can determine if the nights are shorter or longer, which corresponds to different seasons.
Unfiltered sunlight is rich in red light, which is essential for the conversion process. Plants use this conversion to sense the change of season and exhibit photoperiodism, the reaction to the length of day or night. This is essential for crucial plant activities like flowering, setting winter buds, and vegetative growth. For instance, short-day plants flower when nights exceed a certain length, while long-day plants flower when the nights are shorter than a specific threshold.
Which structure is found only in plant cells and functions in the process of photosynthesis
A.W
B.X
C.Y
D.Z
There are three types of fibers in the cytoskeleton. Which of these is NOT a cytoskeleton fiber? A) microtubules B) macrotubules C) microfilaments D) intermediate filaments
There are three primary types of fibers in the cytoskeleton and out of all the options, B. Macrotubules are not in the cytoskeleton.
The three types of fibers in the cytoskeleton are:
Microtubules - composed of protein tubulins and are useful in locomotion Microfilaments - composed of the protein actin and are used for cytokinesis Intermediate filaments - these help cells by providing tensile strengthAll these are in the cytoskeleton and serve various functions apart from the macrotubules. We can therefore conclude that the cytoskeleton does not contain any macrotubule fibers.
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The cell membrane around a cell forms a barrier that protects and regulates the cell. Certain chemicals can pass through the plasma membrane because they have similar chemical properties as the membrane. Which best describes those that can pass through? They are concentrated. They are soluble. They are diluted. They are heated
Answer:
They are soluble. Often, they are of an appropriate polarity and size as well.
Explanation:
Answer:
B:They are soluble
Explanation:
its right on edg 2021
A student sets up a controlled experiment to test the effect of a fertilizer on plant growth. They use 2 tomato plants, one is given 1 cup of water every day, 1 cup of fertilizer every week and daily sun and constant temperature. The second plant is given ½ cup of water every day, no fertilizer and sun every other day and constant temperature. Using your knowledge of the Scientific method why is this not a good experimental design? 1.The second plant should also be given some fertilizer.
2.The second plant had different controls and so it cannot be compared for just the effect of fertilizer 3.The second plant should have a change in temperature 4. The second plant should not have that much water every day.
Diabetics can now obtain insulin that has been manufactured by what biological advancement?
1.HGP
2.hybridization
3.gene splicing
4.cloning
The Krebs cycle and electron transport take place in which part of the cell?
1.cytoplasm
2.mitochondria
3.nucleus
4.vacuoles
Fertilizers are the chemical products used to kill the pests and the insects harming the crops. This was not a good experimental design as the second plant had different control. Thus, 1. option 2, 2. option 3 and 4, and 3. option 2 are correct
What is experimental design?Experimental design is a setup that is prepared to conduct and perform the experiment to know the observations and the results. If there are different controls for the experiment then the comparison is not possible. Hence, option 2 is correct.
Insulin production now is possible in E Coli bacteria with the help of gene splicing and cloning. The genes for insulin are spliced and the bacteria are cloned to make multiple copies to get the protein. Thus, options 3 and 4 are correct.
The Kreb cycle and the ETC are the cycles that occur in the mitochondria of the cell and are involved in the production of the energy molecules, ATP that are vital for the cell functioning. Hence, option 2 is correct.
Therefore, insulin can be produced in bacteria by gene splicing and cloning.
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7) When an experiment is repeated and the new results are different from the original results, what could you assume to be true? A) The results from both experiments are worthless. B) The first experiment's results are worthless and should be discarded. C) The experimental design is flawed and the experiment should be discarded. D) Neither test results are 100% reliable and additional experimentation is needed.
D) Neither test results are 100% reliable and additional experimentation is needed.
Explanation:
The given scenario implies that neither test results are 100% reliable and additional experimentation is needed. The correct option is D.
What is an experiment?Experimentation is a research method that involves consciously manipulating one or more variables and observing the outcome or effect of that manipulation on other variables.
Controls are frequently used in experimental designs to provide a measure of variability within a system as well as a check for sources of error.
An experiment is a scientific investigation in which a hypothesis is tested. An experiment involves manipulating an independent variable (the cause) and measuring the dependent variable (the effect); any extraneous variables are controlled. The fact that experiments should be objective is an advantage.
The experimental method's goal is to provide more definitive conclusions about the causal relationships among the variables in a research hypothesis than correlational research can.
Here in the given scenario, the experiment is repeated and is not getting the proper result, which implies that both the experiments are needed to be worked again.
Thus, the correct option is D.
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True or false: If a product has no added sugar, it is also sugar-free.
The earthworm's_______ vessel acts as a pump to push blood throughout the body.
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Explain in your own words why a roller coaster has gravitational energy.
labord's chameleon how do they get food
Labord's chameleons use their excellent color vision and the ability to focus their eyes to detect prey. They can change their skin color for camouflage and use their long, sticky tongues to quickly capture insects and small invertebrates.
Explanation:Labord's chameleons are adapted to secure food through a combination of their physical and sensory abilities. With color vision and the ability to focus their eyes by changing the shape of the lens, which is better developed in lizards compared to snakes, they can detect prey effectively. Not only can their eyes move independently to maximize their field of vision, but chameleons also have the unique ability to change their skin color for camouflage, making it easier to sneak up on their prey unnoticed.
Once prey is spotted, chameleons utilize their long, sticky tongues, which can shoot out rapidly to capture insects and other small invertebrates. Their tongues act like a sudden trap, extending and retracting quickly enough to catch even the most alert prey. The way they capture food is not only efficient but also relies on their acute senses and stealthy approach facilitated by their color-changing ability and body shape to prevent detection not only by their prey but also by predators.
Which is an example of an inherited trait?
A knowing how to add
B building muscle tone
C becoming a piano player
D having a round face
What are some possible actions that people can take to reduce air pollution? Select all that apply.
living in the suburbs
living in urban areas
carpooling
using mass transit
traveling by boat
Answer:
living in the suburbs, carpooling, using mass transit
Explanation:
which one of these is not an example of intercellular communication?
Ribosomes make protein. i promise you this is the answer. PLZ MARK ME BRAINLIEST
Why does prolonged exposure to UV light from the sun or tanning beds increase the risk for getting skin cancer?
A.increased exposure to UV light decreases the risk of a mutation occurring
B.increased exposure to UV light increases the risk of a mutation occurring
C.increased exposure to UV light decreases the immune system function
D.increased exposure to UV light has no effect on the risk for getting skin cancer
Answer:
Option B, increased exposure to UV light increases the risk of a mutation occurring
Explanation:
Ultraviolet radiations (UV) coming from the sun are radioactive waves that affect the skin. They not only cause skin infection, irritation, but are are also potential source of cancer causing agent . Some times these radiations on prolonged exposure causes genetic mutations in the skin cells which continues though ages.
Ultraviolet rays are short wavelength radiations and the shorter is the wavelength of any radiation, the greater is the potential harm caused by it.
Hence, UV rays are harmful.
Option B is correct
"It is best to go skiing in January. It snows most of the month of January" This refers to the area's ______ weather or climate?
"I'd better put on my galoshes" it's going to be a wet one" This refers to the area's ______ weather or climate?
"I was going to wear my favorite dress today ,but I looked out my window and saw the trees blowing in the wind. I figured it would be windy most of the day." This refers to the area's ______ weather or climate?
The first statement about skiing in January refers to the area's climate, which is long-term weather patterns, while the other two statements about wearing galoshes and the windy conditions refer to the day's weather, which are the current atmospheric conditions.
The sentences you've provided refer to the concept of weather and climate, two different aspects of atmospheric conditions. Let's clarify each statement:
"It is best to go skiing in January. It snows most of the month of January" refers to the area's climate. Climate is the average weather conditions in an area over a long period, and if it snows often in January, that's a climatic pattern."I'd better put on my galoshes; it's going to be a wet one" refers to that day's weather. Weather is the short-term atmospheric conditions, and this statement talks about the expectation of rain for the day."I was going to wear my favorite dress today, but I looked out my window and saw the trees blowing in the wind. I figured it would be windy most of the day." This again refers to the day's weather, as it describes the immediate conditions that are affecting what the speaker might wear.In essence, climate is what you expect, like snow in January in Wisconsin, while weather is what you get, like a rainy or windy day.
Write a sentence using the word 'resistance'
at what point in the water cycle can water damage a ecosystem
During the process of precipitation, water can cause damage to the ecosystem as in flooding and in acid rain.
What is the water cycle?The water cycle is a natural geological cycle of how water circulates between the atmosphere and the earth's surface.
Some steps in the water cycle are:
EvaporationCondensation and PrecipitationDuring the process of precipitation, water can cause damage to the ecosystem as in flooding and in acid rain.
Therefore, precipitation can cause damage to the ecosystem.
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explain the importance of resources and suitable habitats to an organism
Resources (food, water, sunlight, space, and mineral nutrients) drive an organism's survival and adaptation within an ecosystem via metabolic processes and physical structures. A suitable habitat, defined by factors like climate, elevation and geography, determines which organisms can thrive. Hence, both resources and habitats significantly influence an organism's nutritional and reproductive strategies.
Explanation:Resources such as food, water, sunlight, space, and mineral nutrients are vital to organisms as they provide the energy for metabolic processes and the matter to make up an organism's physical structures. This competition for resources, a characteristic of natural selection, occurs both within a single species and between different species.
Moreover, a suitable habitat is equally essential for an organism's survival. Factors such as a habitat's climate, elevation and geology can significantly influence which organisms can thrive in that particular area. For instance, in aquatic biomes, the movement of water impacts the availability of nutrients and food resources.
Essentially, the availability of resources and a suitable habitat directly influence an organism's nutritional and reproductive strategies, thereby affecting its survival and adaptation mechanisms in an ecosystem.
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1. Which characteristic allows carbon to form chains and rings with other carbon atoms?
A. Carbon is the fourth most abundant element in the universe
B. Carbon has several forms
C. Carbon can form four covalent bonds
D. Carbon is the structural parts of lipids, carbohydrates, proteins, and nucleic acids
Answer:
The answer is C. Carbon can form four covalent bonds
Carbon can form four covalent bonds is the characteristic that allows carbon to form chains and rings with other carbon atoms.
Carbon forms bonds with itself, which is known as carbon-carbon bonds, since carbon is tetravalent, which makes it have the possibility of forming bonds with other carbon atoms and other elements.
The tetrahedral structure of carbon means that in its outermost electronic shell it has four valence electrons that it can share, so it has the ability to form four covalent bonds with other carbon atoms or with other elements.
Precisely because of the great facility that carbon possesses to link together forming chains, there are so many different types of hydrocarbons.
Carbon forms bonds with many elements on the periodic table such as alkaline and alkaline earth elements (minus francium, barium, and radium).Carbon has the characteristic of being able to form long and fairly stable chains, this characteristic or property is called concatenation.Therefore, we can conclude that Carbon can form four covalent bonds is the characteristic that allows carbon to form chains and rings with other carbon atoms.
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how are ATP and glucose similar
ATP and glucose are similar as they both store energy that can be used by cells. ATP provides immediate energy for cellular work whereas glucose is broken down to produce ATP during cellular respiration. Both play a crucial role in powering cellular activities.
Explanation:ATP (Adenosine triphosphate) and glucose are both essential for life because they provide energy for cells. They are similar because they both store energy that can be used by cells. ATP is considered the main energy currency of the cell, it is produced from glucose during cellular respiration and it provides immediate energy for cellular work. On the other hand, glucose is a simple sugar that is broken down during the process of glycolysis to produce ATP.
Essentially, the energy stored in glucose is transferred to ATP during the process of cellular respiration. Therefore, both ATP and glucose play a critical role in powering cellular activities.
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The point in the Moon's orbit when it's farthest away from the Earth is called A. perigee. B. apogee. C. penumbral. D. eclipse.
How might the surface area to volume ratio affect the ability of a cell to take in and use nutrients from its environment?
which change would make the statement below true 3.9 =39 hundredths
Bacteria perform a specific type of asexual reproduction, which is called
Answer:
binary fission is the answer
Explanation:
Enzymes are proteins. What would happen to the enzymes of your body if your body temperature started to rise to an abnormally high degree?
A. Nothing, the enzymes would be fine because they are very stable molecules.
B. The enzymes' substrates would become changed in shape and no longer fit the active sites of the enzyme.
C. The enzymes would become denatured and their active sites would lose their shape causing them not to work.
D. The enzyme would become larger than the substrate but would still continue to work, just not as well.
If the body's temperature rises abnormally high, enzymes lose their specific shape becoming denatured. This causes the active sites of the enzymes to change shape and stop working properly. This can impact the body's functioning since enzymes play a crucial role in physiological processes.
Explanation:Enzymes are indeed proteins and they greatly depend on the temperature range of the human body, which is typically 37 degrees Celsius or 98.6 degrees Fahrenheit. When body temperature rises to an abnormally high degree, enzymes would not remain stable. The correct answer would therefore be option 'C'. The enzymes would become denatured, losing their specific three-dimensional structure or conformation. The shape of their active sites would change, making it impossible for substrates to bind effectively, causing the enzymes to stop functioning properly. This process is irreversible and thus, can have severe consequences on the body's physiological processes where enzymes play key roles.
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What is the material within the nucleus that carries the instructions to build proteins
Facilitated diffusion and ________________ are alike since neither requires energy. A) endocytosis B) phagocytosis C) active transport D) simple diffusion
Answer:
CCCCCCCCCCCCCC
ACTIVE TRANSPORT
Facilitated diffusion and simple diffusion are similar in that they are passive transport mechanisms that do not require energy, with the difference being that facilitated diffusion uses carrier proteins.
Facilitated diffusion and simple diffusion are alike since neither requires energy. The correct answer is D) simple diffusion. Facilitated diffusion and simple diffusion are both passive transport mechanisms that allow substances to move across the cell membrane without the need for cellular energy (ATP). However, facilitated diffusion differs from simple diffusion as it involves carrier proteins that help larger or less permeable molecules pass through the cell membrane. In contrast, active transport mechanisms like endocytosis, phagocytosis, and ion pumps require energy to move substances against their concentration gradient.
what occurs during meiosis that does not occur during mitosis?
A.Chromosones are passed to the offspring
B.A cell is divide in half
C.The chromosome number is divided by half
D.Two sex cells combine
The answer is D). trust me
Meiosis differs from mitosis in that it halves the number of chromosomes to produce haploid cells, introduces genetic variation through crossing over, and occurs only in specific cells to produce sex cells.
Meiosis, a type of cell division specific to sexual reproduction, has distinct processes not found in mitosis.
The major characteristic of meiosis that differentiates it from mitosis is that the chromosome number is reduced by half.
This happens through a series of two nuclear divisions resulting in four daughter cells, each containing only half of the parental chromosomes - making them haploid cells.
Another unique process in meiosis, not present in mitosis, is crossing over or recombination that occurs in the first phase (prophase I), where homologous chromosomes pair and exchange sections of DNA.
This introduces genetic variation within the offspring, a feature absent in mitosis which produces genetically identical cells.
Lastly, meiosis occurs in specific cells (in the testes in males and ovaries in females), creating sex cells (gametes), whereas mitosis happens in all body (somatic) cells.
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In which type of reproduction can cells divide through the process of mitosis?
chromosome duplication
sexual reproduction
gamete formation
asexual reproduction
Answer:
asexual reproduction
Answer:
asexual reproduction
Explanation:
How would you identify glacial sediments from alluvial (stream) sediments? Also, could certain glacial sediments be mistaken for alluvium?
Which substances are responsible for accelerating chemical reactions in cells? amino acids enzymes nucleic acids lipids