The semi-permeable membrane that encloses the cytoplasm and all of the cellular organelles is called the plasma membrane.
The semi-permeable membrane which encloses the cytoplasm and all of the cellular organelles is called the Plasma Membrane. This membrane is made up of two layers of phospholipids, which form a lipid bilayer. The phospholipids have a hydrophilic (water-loving) head and a hydrophobic (water-fearing) tail, which ensures that the membrane is impermeable to large molecules, such as proteins and sugars. In addition, the membrane contains various proteins and carbohydrates which give it a variety of functions. These proteins act as receptors for molecules, allowing them to move into and out of the cell, and as enzymes that catalyze reactions. Additionally, the carbohydrates on the outer surface of the membrane help to identify the cell and enable it to recognize other cells. The plasma membrane also contains cholesterol, which helps to maintain its fluidity and stability.
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Explain the process and bonds involved in the ability of RNA to fold into complex 3-D shapes, similar to those of tertiary proteins.
RNA molecules fold into complex 3-D structures when base pairing occurs between nitrogen base pairs. The bonds forned are hydrogen bonds.
What are RNA molecules?RNA molecules refers to nucleic acids which are built from ribose sugar molecules instead of deoxyribose as in DNA molecules.
RNA molecules as in DNA are composed of a sugar backbone, a nitrogenous base, and phosphodiester linkages.
The nucleotides found in RNA molecules are:
uraciladeninecytosine andguanineRNA is able to form complex 3-D structures even though they are single-stranded because of base pairing that occurs between adenine and uracil, and guanine to cytosine.
The bonds present in thebase pairs are hydogen bonds.
Hydrogen bonds are bonds which are formed between hydrogen and a highly electronegative atom such oxygen, nitrogen, chlorine, and fluorine.
In the RNA molecule, hydrogen bonds form betweenthe oxygen and nitrogen atoms of the either uracil, adenine, cytosine, or uracil.
These hydrogen bonds results in three-dimensional structures of RNA.
In conclusion, RNA molecules are single-stranded nucleic acids materials.
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Which of the following factors have an affect on biodiversity?
a.climate
C. niche
b. gene pool
d. all of the above
Answer: A. climate
Explanation : Factors that affect biodiversity in an ecosystem include area, climate, and diversity. Humans can also threaten biodiversity. Activities include habitat destruction, hunting, pollution, Sport hunting and exotic species.
help i need help help me
Answer:
horsetail is a seedless vascular plant
club moss is a seedless vascular plant
Fern is a seedless vascular plant
Moss is a non vascular plant
Liverwort is a non vascular plant
Hornwort is a non vascular plant
When a person drinks too much water too quickly, the fluid surrounding a person’s cells changes from:
a. hypertonic to hypotonic
b. isotonic to hypertonic
c. isotonic to hypotonic
When a person drinks too much water too quickly, the fluid surrounding a person’s cells changes from C. isotonic to hypotonic.
When a person drinks too much water too quickly, this causes a reduction in the concentration of ions and other substances in the blood, which makes the fluid surrounding the cells more dilute or hypotonic. Hypotonic solution:In a hypotonic solution, the concentration of solutes (dissolved particles) outside the cell is lower than the concentration inside the cell. Because water moves from a high concentration to a low concentration, water flows into the cell in hypotonic solutions.
An isotonic solution is one in which the concentration of solutes is equal on both sides of a semipermeable membrane. Because there is no concentration gradient, there is no net movement of water across the membrane. In a hypertonic solution, the concentration of solutes outside the cell is higher than the concentration inside the cell, because water moves from an area of low solute concentration to an area of high solute concentration, water moves out of the cell in hypertonic solutions. Thus, the correct answer is option C: isotonic to hypotonic.
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Methods of classification of organisms have changed over time. Which sequence shows these changes?.
The study of a living being is called biology. There are two types of species that are living and these rare plants and animals.
The correct answer is described as follows
What is taxonomy?The classification of the species and arranging them into different hierarchy levels is called taxonomy.The criteria for the classification is changed over periods of time and still changing as we are developing in modern science.
The first classification has used the habitat to classify the species. After that various scientists came they start to classify the species in a different manner.
The other classification is based on the cell wall and cell organization.
After that, the final classification is based on the 5 different criteria out of which the criteria are:-
cell levelcell organisationmode of nutrientmode of reproductiontissue levelHence, the answer is mentioned as described.
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Fish rely on coral for _______. a. shelter b. food supply c. camouflage d. all of the above please select the best answer from the choices provided a b c d
Fish rely on coral for shelter, food supply, and camouflage. So, the correct option is D, i.e. All of the above.
What do you mean by Coral?Coral may be defined as a tiny soft-bodied animal that typically lives within a stony skeleton grouped in large colonies and that is related to the jellyfish.
Fishes and other organisms depend on the coral for many purposes. Such as to find food, shelter, reproduce, rear their young ones, camouflage. Coral may be considered the main factor to increase the biodiversity in the aquatic ecosystem.
Therefore, Fish rely on coral for shelter, food supply, and camouflage.
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Answer: B
Explanation:
if the codon for phe is 5'- u u c 3' what is the anticodon that would be found on the trna that carries phe?
if the codon for phe is 5'- u u c 3' , AAG is the anticodon that would be found on the trna that carries phe. Their function is to base pair with the codon on a strand of mRNA during translation.
An amino acid's specific genetic information is encoded by a codon, which is a DNA or RNA sequence made up of three nucleotides (also known as a trinucleotide). A trinucleotide sequence called an anticodon is found at one end of a transfer RNA (tRNA) molecule and is complementary to a corresponding codon in an mRNA sequence. During protein synthesis, each time an amino acid is added to a developing polypeptide, a tRNA anticodon couples with the corresponding codon on the mRNA molecule to ensure that the correct amino acid is incorporated into the polypeptide.
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The breathing rate , heart rate , and blood hormone levels of an individual would directly provide information about that individuals ?
Answer:
Health
Explanation: Knowing an individuals breathing rate heart rate and or blood hormone levels could help you find weather or not that person has any heart problems or just health problems in general. Hope this helped :)
Carbonate reefs (max 10 pts) a. Why are reefs generally attractive exploration targets? b. hat determines generally the depth of the hydrocarbon-water contact in reefs (use sketches)?
Que
a) Carbonate reefs are attractive exploration targets due to their unique characteristics and fossilized rocks, and they are known to host significant hydrocarbon accumulations. b)depth of these rocks is determined by the depth of the reef crest.
The exploration of these reefs involves a great deal of investment and high risks. In general, they are considered to be some of the most difficult areas to explore. As a result, companies may benefit greatly from their discoveries as the findings may result in major oil deposits. Reefs are located in marine waters and are formed from the remains of carbonate shells that have accumulated over time.
They also contain other sedimentary rocks such as sandstones and shales. The reefs' ability to preserve fossils makes them a valuable target for exploration. Carbonate reefs are unique geological structures that can contain large amounts of hydrocarbons. It is important to note that reef reservoirs are incredibly complex, and the variations in the properties of these structures can be challenging to understand. The depth of the hydrocarbon-water contact in reefs is determined by the depth of the reef crest, which is the highest point of the reef. In general, the depth of the hydrocarbon-water contact increases with the depth of the reef crest.
The crest height of the reef determines the water depth that the hydrocarbon-bearing rocks are exposed to. If the reef crest is located at a shallow depth, then the hydrocarbon-bearing rocks will be located at a shallow depth, and the hydrocarbon-water contact will be shallow as well. Conversely, if the reef crest is located at a deep depth, then the hydrocarbon-bearing rocks will be located at a deep depth, and the hydrocarbon-water contact will be deeper as well.
In general, the hydrocarbon-bearing rocks are located below the reef crest, and the depth of these rocks is determined by the depth of the reef crest.
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Hi please help meeeeee
Answer:
I'm sure (mei-o-sis) but I don't know how to explain I haven't done this in three years.
Explanation:
It wouldnt let me do the full word.
a disorder that occurs more frequently in babies born to mothers over the age of 35 is?
When it comes to having a baby with Down-syndrome, older pregnant women who are 35 years or older are more likely than younger ones to do so.
Down syndrome patients may have physical characteristics and developmental difficulties as a result of the extra copy of chromosome 21. Though it is known that one extra chromosome causes Down-syndrome, no one is certain of the exact causes or the multiplicity of elements that contribute to its occurrence.
However, because there are so many more births among younger women, the majority of newborns with Down-syndrome are born to moms under the age of 35.
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in the sense of alternation of generations, how many generations are included in a mature pine seed?
In the sense of alternation of generations, there are two generations included in a mature pine seed: the sporophyte generation and the gametophyte generation.
The sporophyte generation is the dominant phase in the life cycle of the pine seed, and is characterized by the presence of a multicellular, spore-producing structure, such as a cone or a seed. This structure contains the mature sporophytes, which produce the male or female gametophytes through meiosis.
The gametophyte generation, in turn, is characterized by the presence of tiny, single-celled structures called gametes, which are specialized for reproduction. These gametes eventually give rise to the next generation of sporophytes.
The alternation of generations is a fundamental aspect of the life cycle of many plants, including pines, and is crucial for their survival and reproduction. The presence of two generations, each with distinct characteristics and functions, allows for efficient production and dispersal of offspring, ensuring the continuation of the species over time.
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what are Two Specialized Tissues/Cells Involved With the Respiratory System
Answer:
cilia cells, goblet cells
Explanation:
can someone help me label the food pyramid!!
Note that the items, arranged according to the right order in the Pyramid is given as follows;
Apex predators (at the top of the food chain)Tertiary consumers (carnivores that eat other carnivores)Secondary consumers (carnivores that eat herbivores)Primary consumers (herbivores)ProducersWhat is the rationale for the above response?The producers are at the base of the pyramid, followed by primary consumers that consume the producers.
Secondary consumers eat the primary consumers, and tertiary consumers eat the secondary consumers. Finally, at the top of the pyramid, there are the apex predators that eat other predators. The pyramid represents the energy flow from the producers to the top-level predators, with each level of the pyramid having less energy than the level below it.
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how would you assess the biographic evidence used to explain the divergence of hawaiian honeycreeper species
In assessing the biographic evidence used to explain the divergence of Hawaiian honeycreeper species, several factors need to be considered. These include the age and reliability of the sources used, the credibility of the evidence, and the level of corroboration with other sources of evidence.Biogeography is the study of the distribution of species in geographical space and time, as well as the factors that influence their distribution.
Hawaiian honeycreepers are a prime example of the diversity of species that can evolve from a single ancestral species in a relatively short period.Biographic evidence can help to explain how different species of honeycreepers have diverged from their common ancestor, and how environmental factors have contributed to their evolution. This evidence includes fossil records, molecular data, and observations of living species in their natural habitats.
The age and reliability of the sources used are critical factors in assessing the validity of biographic evidence. For example, older fossil records may be less reliable than newer ones because they may have been subjected to more erosion or other forms of decay. Similarly, molecular data may be more reliable if they are based on the latest techniques for DNA sequencing or other analytical methods.
The credibility of the evidence is also important. For instance, molecular data may be more credible if they are based on multiple independent tests using different techniques. The level of corroboration with other sources of evidence is another important factor in assessing biographic evidence. For example, if molecular data support fossil evidence of the evolution of a particular species, this would provide strong evidence in support of the hypothesis of evolution by natural selection.In summary, in assessing biographic evidence used to explain the divergence of Hawaiian honeycreeper species, it is important to consider the age and reliability of the sources used, the credibility of the evidence, and the level of corroboration with other sources of evidence.
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Location X and Y are adjacent. Location X has a lower air pressure than Location Y. What will most likely happen?
Wind will blow from one location to another.
Air above Location Y will rise up and condense.
Temperature at the two locations will become equal.
Convection currents of air above the two locations will stop.
Answer:
Wind will blow from on location to another.
Explanation:
I hope this helps!!!
Answer:
A, Wind will blow from one location to another.

bynummeeks24
10/08/2020
BiologyHigh School
answered
Which of the following best describes how a channel protein moves materials across the membrane? A)They provide a carrier for specific molecules to bind to and cross the membrane via endocytosis. B)They provide a passage for specific molecules to cross the membrane via passive transport. C) They provide a tunnel for solutes to cross the membrane via active transport. D) They provide energy needed for solutes to cross the membrane via facilitated diffusion.
The correct option that best describes how a channel protein moves materials across the membrane is B) They provide a passage for specific molecules to cross the membrane via passive transport.
Channel proteins are integral membrane proteins that form channels or pores in the cell membrane. These channels allow the passive transport of specific molecules or ions across the membrane down their concentration gradient. This process is called facilitated diffusion, where the molecules move from an area of higher concentration to an area of lower concentration without the need for energy input. The channel proteins provide a selective passage for these molecules, enabling their movement across the membrane.
Therefore, the correct answer is B) They provide a passage for specific molecules to cross the membrane via passive transport.
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Please help me
What determines if an ocean current is warm or cold- short answer
THIS IS SCIENCE PLEASE HELP ME I GIVE BRAINYLIST
Answer:
Currents originating in low latitudes near the equator tend to carry warmer water. Currents originating in high latitudes near the north or south pole tend to carry colder water.
Explanation:
Brainiest please
Based on the impact that volcanoes have on the amount of solar radiation transmitted, what can be concluded about the effect of volcanic activity on global temperature?
a.
volcanic eruptions are the result of a decrease in global temperature.
b.
volcanic eruptions result in a decrease in global temperature.
c.
volcanic eruptions result in an increase in global temperature.
d.
volcanic eruptions have no effect on global temperature.
Based on the impact that volcanoes have on the amount of solar radiation transmitted, it can be concluded that volcanic eruptions result in a decrease in global temperature (option b).
When a volcano erupts, it releases a large amount of sulfur dioxide and ash into the atmosphere. These particles can reflect incoming solar radiation back into space, leading to a cooling effect on the Earth's surface. This cooling effect can last for several years after a large volcanic eruption.
Therefore, the correct answer is option b) the impact of volcanoes on the amount of transmitted solar radiation suggests that volcanic activity has a cooling effect on global temperature.
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Why do you think a composer would want to alter or highlight a rhythm or a tone?
Answer: A composer may want to alter or highlight a rhythm or a tone to create a desired effect or mood. By emphasizing certain rhythms or tones, a composer can create a sense of urgency, tension, or excitement. Additionally, by altering the rhythm or tone, a composer can add texture or depth to a piece of music, making it more interesting and unique.
Drag the labels onto the diagram to identify the inputs and outputs of the two stages of photosynthesis. Use the labels of Group 1 for inputs and outputs and the labels of Group 2 for the photosynthesis stages.
In photosynthesis, there are two stages: the light-dependent reactions and the light-independent reactions (also known as the Calvin cycle).
The inputs for the light-dependent reactions are sunlight, water, and NADP+, while the outputs are oxygen, ATP, and NADPH.
The inputs for the light-independent reactions are carbon dioxide, ATP, and NADPH, and the outputs are glucose and ADP + Pi.
The inputs for the light-dependent reactions include sunlight (light energy), water (H2O), and NADP+ (nicotinamide adenine dinucleotide phosphate). The outputs of this stage are oxygen (O2), ATP (adenosine triphosphate), and NADPH (reduced form of NADP+).
The inputs for the light-independent reactions (Calvin cycle) include carbon dioxide (CO2), ATP, and NADPH. The outputs of this stage are glucose (C6H12O6) and ADP (adenosine diphosphate) + Pi (inorganic phosphate).
The inputs for the light-dependent reactions are sunlight, water, and NADP+, while the outputs are oxygen, ATP, and NADPH. The inputs for the light-independent reactions are carbon dioxide, ATP, and NADPH, and the outputs are glucose and ADP + Pi.
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which pair of scientists below would probably have agreed with the process that is depicted by this tree? the following question refer to the evolutionary tree in the figure below. the horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. the labeled branch points on the tree (v-z) represent various common ancestors. let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species. which pair of scientists below would probably have agreed with the process that is depicted by this tree? aristotle and lyell cuvier and lamarck lamarck and wallace wallace and linnaeus
The pair of scientists who would probably have agreed with this process are Wallace and Lamarck pair of scientists below would probably have agreed with the process that is depicted by this tree.
Lamarck proposed the theory of inheritance of acquired traits, which suggested that traits acquired during an organism's lifetime could be passed on to its offspring. While this theory has been largely discredited, Lamarck did recognize the existence of evolutionary change over time.
Wallace, on the other hand, is known for independently proposing the theory of evolution by natural selection, along with Charles Darwin. This theory explains how natural selection can drive evolutionary change by selecting for advantageous traits and leading to the formation of new species.
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some populations have a distribution that is very limited because of the abiotic factors to which they are adapted. for example, some species of butterfly require a minimum amount of rainfall each year in order to survive and reproduce. if a prolonged drought, that is, one longer than 10 years, occurs across a portion of their range, how will their range change after three years into the drought? please choose the correct answer from the following choices, and then select the submit answer button. answer choices the butterfly range will remain the same because rain will fall again after the drought is over. the butterfly range will contract into only those regions with adequate rain. the butterfly range will increase to regions that have adequate rain.
Answer: The butterfly range will contract into only those regions with adequate rain
Explanation:
1 point
6.
What does this graph of plant heights show?
60 f Height (cm)
55
50
Plant 1
45
40
35
30
25
20
15
10
5
Plant 2
Time (days)
5 10 15 20 25 30 35 40 45 50
O Plant 2 ended up taller than Plant 1.
O Plant 1 was always taller than Plant 2.
O Plant 1 grew steadily. Plant 2 grew quickly at first and then stopped
growing
O Plant 2 grew steadily. Plant 1 grew slowly at first and then grew quickly.
Based on the graph of plant growth, it can be concluded that Plant 1 grew steadily. Plant 2 grew quickly at first and then stopped growing.
The correct option is C.
What are the factors that affect plant growth?Plant growth refers to the increase in size and height of a plant as a result of the metabolic activities that occur in the plant.
The growth of your plants can be impacted by four key elements. They are temperature, light, nutrients, and water. These four factors have an impact on the plant's growth hormones, which will either cause the plant to grow swiftly or slowly.
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the phenomenon of ________ in allopolyploids consists of more rapid growth, increased fruit and flower production, and improved disease resistance.
The phenomenon being referred to in allopolyploids is known as hybrid vigor, also called heterosis. It describes the superior growth, fertility, and overall fitness of hybrid offspring compared to their parents.
In allopolyploids, which are organisms that have undergone polyploidization events involving the hybridization of two or more closely related but distinct species, hybrid vigor can result from the combination of different genetic traits and the emergence of new gene interactions. The phenomenon can lead to more rapid growth, increased fruit and flower production, and improved disease resistance, among other benefits. Hybrid vigor is an important concept in agriculture and plant breeding, as it can lead to the development of more productive and resilient crops.
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All the genetic mutations may occur spontaneously in organisms is t he incidence of such mutations may be increased by what?
Answer:
Both physical and chemical factors
Explanation:
A mutation is any alteration in the DNA sequence of the genome of a particular cell/organism. Depending on the type and localization, a mutation can be neutral, deleterious, or even beneficial for the individual that possesses it. Moreover, the mutation rate refers to the probability for a mutation to appear in a cell/organism. Exposure to physical environmental factors (e.g. ultraviolet radiation, X-rays, gamma rays, etc) and chemical factors (e.g., bromine) can increase this likelihood.
Answer:
physical and chemical factors
Explanation:
Factors that alter the critical chemical and physical characteristics of ecological systems include temperature, pH electrochemical (redox) potential, and the transparency of air and water.
Select the correct answer.
When do you see a portion of the Moon passing through the Earth's umbra?
O A total lunar eclipse
OB. penumbral lunar eclipse
Ос.
total solar eclipse
OD.
D. partial lunar eclipse
Answer:
Total Lunar eclipse
Explanation:
Because the umbral shadow is the 'core' of the shadow and is only visable during a total lunar eclips.
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Jasmine and Marcus are at the park, and Jasmine makes the following statements. Which of them is an inference?
Answer:the plant is producing oxygen so c
Explanation:
Which statement correctly describes the relationship between technology
and science?
A. New developments in technology make scientific research
irrelevant.
B. Science benefits society as a whole, while technology benefits
engineers only.
OC. Science is used to develop new technology, but technology is not
used in science.
OD. Science and technology influence each other and lead to new
discoveries.
Answe:
The Correct answer is D
Science and technology influences each other and leads to new discoveries
Where do animals get the glucose to get energy from cellular respiration?
Answer:
Animals obtain glucose in their diet. During metabolic reactions, animal cells use glucose: to make glycogen which is stored in the liver and muscle cells to make lipids from fatty acids and glycerol All cells require glucose for respiration.
Explanation:
Answer:
oxidation of carbohydrates obtained from food.