Answers
The correct order of structures of a muscle from smallest to largest is: muscle fiber, endomysium, fascicles, perimysium, epimysium.
The layers of connective tissue in skeletal muscles are arranged from the outside to the inside. C. The epi-, peri-, and endomysium. Muscle fascicles, individual muscle fibres, and the whole muscle are all covered by the perimysium, endomysium, and epimysium, respectively. Calcium ions are released during depolarization. development of the actin-myosin cross-bridge. Actin and myosin filament sliding mechanism. Sarcomere shortening (contractions of the muscles). Skeletal, cardiac, and smooth muscle tissue are the three different kinds that make up the muscular system. In the human body, each type of muscle tissue has a distinct structure and function. Muscles in the skeleton may move bones and other objects. The heart pumps blood by contracting the cardiac muscle.
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Related Questions
In a genetic cross, a Punnett square is used to determine the possibilities of the genotypes and
among the offspring.
Answers
In a genetic cross, a Punnett square is used to determine the possibilities of the genotypes and phenotypes among the offspring.
Genetics can be defined as the scientific study of hereditary and all of its components (genes) within the body of an organism.
A Punnett square can be defined as a square diagram that is used to predict the possible allelic combinations of gametes in a particular breeding (cross) experiment of parent organisms with known genotypes and phenotypes.
Basically, a Punnett square is a visual representation which was developed in 1905 by Reginald C. Punnett.
In conclusion, a Punnett square is typically used to predict the probability of the genotypes and phenotypes among the offspring in a cross experiment of parent organisms.
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Which of the following is a question about biology? (Select all that apply.)
How have rocks in the Grand Canyon changed over the last million years?
How much carbon dioxide does an industry release into the atmosphere each year?
How does water pollution affect fish in a lake?
How has a species of bacteria changed since doctors started prescribing antibiotics?
Why are Earth's poles colder than the equator?
Answers
How has a species of bacteria changed since doctors started prescribing antibiotics is a question related to biology.
What are the contents of biology?
Biology is the study of living organisms and their vital processes. Botany, conservation, ecology, evolution, genetics, marine biology, medicine, microbiology, molecular biology, physiology, and zoology are some of the fields covered by biology.
Some bacteria have developed resistance to antibiotics that were once widely used to treat them. For example, Staphylococcus aureus ('golden staph' or MRSA) and Neisseria gonorrhoeae (the cause of gonorrhea) are almost always resistant to benzylpenicillin.
Therefore, bacteria have developed resistance to antibiotics during evolution.
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What is the thallus type of Cladophora vagabunda?
a) colonial
b) unicellular
c) multicellular
d) spirogyna
Answers
The thallus type of Cladophora vagabunda is multicellular, option (c) is correct.
Cladophora vagabunda is a filamentous green alga commonly found in marine and estuarine environments. The thallus of Cladophora vagabunda consists of a branched filamentous structure that can grow up to several centimeters in length.
The filaments are composed of many cells that are connected by cytoplasmic bridges, allowing for the transfer of nutrients and other essential molecules throughout the thallus. The multicellular thallus of Cladophora vagabunda is well-suited for life in the harsh marine environment, as it allows for efficient nutrient uptake and distribution, as well as structural support against the forces of waves and currents, option (c) is correct.
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How could you increase the potential energy of an object
Answers
Answer:
Gravitational potential energy increases as weight and height increases.
Explanation:
This’s because the heavier the object and the higher it is above ground, the more gravitational potential energy it holds.
The graph shown was taken as data during an experiment on a plant. The plant was placed in a chamber with a CO2
probe that measured the accumulation of CO2 over time in the chamber. Please tell me:
Under what conditions (favorable or unfavorable for photosynthesis) the plant was most likely placed and why.
Answers
PLEASE HELP I NEED IT RNNNN ILL MAKE YOU BRAINLIEST
Answers
For a muscle to contract in a cell, chemical reactions that involve a positive change in the amount of free energy available take place. Which of the following best describes the impact of these reactions in the cell?
They cause an increase in total entropy.
They move the cell toward equilibrium.
They occur spontaneously as they give off heat.
They require energy to be absorbed to proceed.
Answers
Answer:
A) They cause an increase in total entropy
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For a muscle to contract in a cell, chemical reactions that involve a positive change in the amount of free energy available take place. The best description is the impact of these reactions in the cell is that they cause an increase in total entropy. Thus, option A is correct.
What will happen if the biological molecule is synthesized?When a molecule is biologically molecule synthesized, there will be a monomer unit converted into the polymer, so there is a change in molecule randomness so entropy is decreased.
When a biological molecule has been synthesized the monomeric unit has c onverted into the polymeric unit and there will be a synthesis of bonds. In a biological system, the system moves towards the spontaneous system, and the change in entropy should be increased. The biological system works only when it has a thermodynamically active system.
All the chemical reactions has been held to move towards the the equilibrium state when a biological molecule is synthesized change in the entropy of the system has been decreased but a change in the entropy of the surroundings increases.
Therefore, For a muscle to contract in a cell, chemical reactions that involve a positive change in the amount of free energy available take place. The best description is the impact of these reactions in the cell is that they cause an increase in total entropy. Thus, option A is correct.
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Equipment required: Two empty coffee cans (3-pound size), a thermometer, a can of flat black spray paint, and some tap water. One of the coffee cans needs to have a shiny metallic surface on both sides. Spray the other can with the flat black paint, on both sides. Fill the two cans with about two inches of tap water. Using a thermometer, measure the temperature of the water in each can (the readings should be the same). Remove the thermometer and place the cans in a sunny location where they will not be disturbed and will receive two hours of sunlight. After two hours, use the thermometer to measure the temperature of the water in each can.
Answers
Answer:
Dark and dull objects absorb more energy. Lighter colored and shiny objects absorb less energy.
Explanation:
Because the shiny can reflects more energy then the black- colored can, the shiny can absorbs less energy. The water in the black colored can gets warmer because:
The cans emit energy. This heats the water. An object, which is shiny, reflects light. The black material almost absorbs light and heat. Heated bodies operate in reverse, which determines how they radiate energy. The higher the absorption by an object, the higher the radiation level it has. Since the shiny can absorbed less energy, it radiated less energy into the water. Thus, the water in the shiny can was less warm than the water in the black can.
Answer: (Answers may vary.)
Dark and dull objects absorb more energy. Lighter colored and shiny objects absorb less energy.
Because the shiny can reflects more energy then the black- colored can, the shiny can absorbs less energy. The water in the black colored can gets warmer because:
The cans emit energy. This heats the water. An object, which is shiny, reflects light. The black material almost absorbs light and heat. Heated bodies operate in reverse, which determines how they radiate energy. The higher the absorption by an object, the higher the radiation level it has. Since the shiny can absorbed less energy, it radiated less energy into the water. Thus, the water in the shiny can was less warm than the water in the black can.
Explanation: plato/edmentum
neurons are brain cells. where would new neuron come from
A bacteria
B non-living matter
C other cells
D food
Answers
Answer:
The answer is C!
Explanation:
Will give brainlist
The temperature of a substance changes from 120 C to 35 C. Which of the following is true?
The Kinetic Energy of the particles did not change.
The particles of the substance resulted in a high Kinetic Energy.
The particles of the substance initially had high Kinetic Energy.
Answers
The particles of the substance initially had high Kinetic Energy.
Does the kinetic energy of a particle change as the temperature changes?Gas particles move quickly in all directions and regularly collide with one another and the container's side. The particles gather kinetic energy and accelerate as the temperature rises. The particles' real average speed is influenced by their mass and temperature.
In liquids, particles are quite close together and move with random motion throughout the container. Due to the closer proximity of the particles, collisions between them happen more frequently than in gases even if particles are moving quickly in all directions.
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Which statement accurately compares filtration and reabsorption?
A. Filtration is driven by concentration gradient,whereas reabsorption depends on hydrostatic pressure.
B. Filtration involve bulk flow of fluid out of blood,whereas reabsorption is bulk flow back to the blood.
C. Filtration happens to the venule end of a capillary bed and reabsorption happens in feeder arterioles.
D. The direction of fiteration can be either into or out of blood,but reabsorption always involve fluids entering the blood.
D. Two of these statements are accurate.
Answers
Answer:
D. The direction of filtration can be into or out of the blood, but reabsorption always involves fluids entering the blood.
Explanation:
I believe that this is the correct option since filtration can occur in blood vessels and lymphatics, that is why it can be inside or outside the blood, that is, the filtration can be bidirectional.
While the reabsorption is to be able to re-integrate it to the lumen of the capillary or the blood vessel, thus generating an uptake of certain chemical compounds, and this movement or flow is towards the interior of the capillaries, that is, towards the inside of the capillary.
Which TWO descriptions of plants explain how they contributed to the carbon cycle?
A
Plants stored carbon in their tissues to use as energy.
B
Plants released calcium ions from rock to form calcium carbonate.
C
Plants broke down calcium carbonate in water to release carbon dioxide.
D
Plants took in carbon dioxide and released oxygen through photosynthesis.
E
Plants combined calcium ions with carbon dioxide to make calcium carbonate.
Answers
Plants stored carbon in their tissues to use as energy and plants took in carbon dioxide and released oxygen through photosynthesis. Thus, the correct option is A and D.
What is carbon cycle?The carbon cycle is the ongoing process through which carbon atoms move back and forth between the atmosphere and the Earth. The amount of carbon in this system does not fluctuate because our planet and its atmosphere are a closed environment. The location of the carbon, whether it is on Earth or in the atmosphere, is continually changing.
Plants use photosynthesis to transport carbon from the atmosphere into the biosphere and move it up the food chain. They make sugar molecules by chemically combining carbon dioxide with oxygen and hydrogen from water using solar energy.
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56. In the 1950s, a scientist conducted a study on the changes in a population of moths. Dead moths of two different color types were fastened to trees to study which
color of moth was most likely to be eaten by birds. On dark trees, the light moths were eaten. On light trees, the dark moths were eaten. Other scientists criticized the
investigation because birds' food choice using live moths should also have been studied. Which personal trait prompts scientists to question the validity of an
investigation?
O creativity
O determination
O imagination
O skepticism
Answers
The personal trait that prompts scientists to question the validity of an investigation is skepticism.
Skepticism is a critical and questioning mindset that scientists possess. It involves challenging assumptions, questioning methodologies, and evaluating the reliability and validity of experimental procedures and results.
In the given scenario, other scientists criticized the investigation because it failed to consider the birds' food choices using live moths, which could have provided a more comprehensive understanding of the phenomenon.
This criticism demonstrates the importance of skepticism in scientific inquiry, as scientists strive to ensure that studies are conducted with rigor, encompassing multiple perspectives, and addressing potential limitations or biases.
By being skeptical, scientists promote scientific integrity and the pursuit of accurate and reliable knowledge.
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1. The article states "plants take up carbon dioxide from the atmosphere and convert it into food. Explain how this supports the law of the conservation of matter
2. New research has shown plants are photosynthesizing more. What percent increase is being shown by plants?
3. This increase in photosynthetic rate, accounts for how much more carbon being removed from the atmosphere?
4. What do researchers propose this increase is a result of?
5. Describe a laboratory procedure researchers used to quantify photosynthetic efficiency.
7. Describe a field procedure researchers use to quantify photosynthetic efficiency.
9. The article talks about the potential "saturation" of carbon dioxide in the atmosphere. Describe what that will mean as it relates to ecological photosynthetic rates.
Article name: New Research Shows Plants Are Photosynthesizing More in Response to More CO2 in the Atmosphere
BY LAWRENCE BERKELEY NATIONAL LABORATORY DECEMBER 17, 2021
Answers
The article states that research has shown a 20% increase in photosynthetic rate by plants in response to more carbon dioxide in the atmosphere.
What is photosynthetic ?Photosynthesis is the process by which plants, algae, and certain bacteria convert light energy from the sun into chemical energy that can be used to fuel the organisms' activities. This process occurs in the chloroplasts of the cells and involves the conversion of carbon dioxide, water, and light into oxygen and glucose.
The law of the conservation of matter states that matter is neither created nor destroyed, and this process of plants taking carbon dioxide from the atmosphere and converting it into food is an example of this law in action.
The article states that research has shown a 20% increase in photosynthetic rate by plants in response to more carbon dioxide in the atmosphere.
Researchers propose that this increase is a result of plants being able to use more of the carbon dioxide in the atmosphere, as there is more available to them.
To quantify photosynthetic efficiency in the laboratory, researchers use a process called Pulse-Amplitude Modulated (PAM) fluorometry. This method uses a light source to measure the rate of photosynthesis in an individual leaf, and is a way to measure the amount of carbon dioxide taken up by the plant.
To quantify photosynthetic efficiency in the field, researchers use a process called gas exchange measurements. This method uses a chamber that is placed over the plant, and measures the rate of photosynthesis by the amount of carbon dioxide entering and exiting the chamber.
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Why is it important to preserve plant seeds so they are available in the future?
Answers
Answer:
Climate change is a BIG problem thats why we need to store and preserve seeds with these EXTREME weather conditions .
Explanation:
unless u want to look at dirt
Is this a bacteria or virus? Help please and thank youuuu !
Answers
Answer:
its virus i think so because of the structure
Answer:
virus
Explanation:
brainliest?
Which step happens first in secondary succession?
Responses
Grasses, flowers, and mosses colonize the soil.
Bushes and shrubs return and create a shaded environment.
Bare rock is broken down by roots and lichen to form soil.
Seedlings grow into saplings and then taller trees.
Answers
Answer: Grasses, flowers, and mosses colonize the soil.
Explanation:
I took the test and got 5/5
Design and organise learning experiences according to your local circumstances when teaching Processing (including traditional processing of raw materials; metal processing; food processing)
Answers
When teaching Processing, it is essential to design and organize learning experiences that align with local circumstances and provide practical applications.
Here is a suggested approach for teaching Processing, including traditional processing of raw materials, metal processing, and food processing, considering local circumstances:
1. Introduction and Contextualization:
Start by introducing the concept of processing and its importance in various industries. Provide examples of local raw materials, metals, and food products that undergo processing. Discuss the significance of processing in the local economy and its impact on society.
2. Field Trips and Industry Visits:
Arrange field trips to local processing facilities such as factories, mills, or food processing plants. These visits offer students firsthand exposure to different processing techniques and machinery. Encourage students to observe and interact with professionals in the field, asking questions and understanding the practical aspects of processing.
3. Hands-on Workshops:
Organize hands-on workshops where students can engage in practical activities related to processing. For example, set up a metalworking workshop where students can learn basic metal processing techniques like cutting, shaping, and welding. Provide guidance on safety measures and proper tool usage.
4. Local Case Studies:
Explore local case studies of successful processing businesses or initiatives. This could involve inviting guest speakers from local processing companies or inviting entrepreneurs who have started their own processing ventures. Students can learn about the challenges, opportunities, and sustainable practices in the local processing industry.
5. Project-Based Learning:
Assign project-based tasks that allow students to apply their knowledge of processing. For example, students could design and develop a prototype for a food processing machine or propose innovative methods to improve traditional processing techniques using local resources. Encourage creativity, critical thinking, and problem-solving skills throughout the project.
6. Community Engagement:
Encourage students to engage with the local community by organizing outreach programs related to processing. This could involve organizing workshops for local artisans or collaborating with local farmers to develop value-added food products. Such activities foster a sense of social responsibility and provide students with real-world experiences.
7. Assessment and Reflection:
Regularly assess student understanding through quizzes, assignments, and presentations. Encourage reflective practices where students can evaluate their own learning journey and identify areas for improvement. Incorporate feedback mechanisms to continuously enhance the learning experiences.
By designing learning experiences that incorporate field trips, hands-on workshops, local case studies, project-based learning, community engagement, and reflective practices, students will develop a holistic understanding of processing and its significance in their local context. This approach will equip them with practical skills, foster creativity, and promote an entrepreneurial mindset, preparing them for future opportunities in the processing industry.
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why carbohydrate digestion occurs first in mouth?
Answers
The digestion of starch carbohydrate is initiated in mouth due to the action of starch digesting enzyme ptyalin or salivary amylase present in saliva secreted by salivary glands. Enzymatic hydrolysis helps in the partial breakdown of starch (polysaccharide) into maltose and isomaltose (disaccharides) and small dextrins called 'limit' dextrins. Nearly 30% of the starch is hydrolysed in the oral cavity because of the shorter time the food is retained here
due to the action of starch the carbohydrate digestion occurs first in mouth
Suppose we have access to the four nucleotides which compose DNA: A, T, C and G. Placed into a sequence with one another, they form a code which can be read by the cell to provide a blueprint for the creation of proteins. When forming a sequence of three nucleotides, the sequences TAA, TAG, and TGA are codes to tell the cell to stop reading the DNA. Assume each sequence of nucleotides is equally likely to be formed.
A. How many possible ways are there to form a sequence of three nucleotides? - 64
B. Of the possible ways to form a sequence of three nucleotides, what is the probability to form a stop sequence? = 0.0469
C. What is the probability that a sequence that is not a stop sequence is formed? 64-3 = 61 61 = 0.983
D. For a three-nucleotide sequence, G is engineered to be in the third place. For the remaining two nucleotides in the sequence, C cannot be in the second place (for example CTG is allowed but not TCG). How many sequences can be formed?
E. Of the number of sequences found in Part D, what is the probability that a stop sequence is formed?
Answers
Answer:
The correct answer is :
A. we know there are four nucleotides and three sequence makes a triplet code then total possible ways are:
4^3 = 4×4×4= 64 ways.
B. The stop codons by 64 amino acid or triplet codes: TAA, TAG, and TGA then the probability would be = 3/64 = 0.0469
C. the probability that a sequence that is not a stop sequence is formed = total minus probability of stop codons:
64-3 = 61
61/64 = 0.953
D. G at end place and c should not be in the middle then:
the codes will be =
ATG
AGG
AAG
TTG
TGG
TAG
CTG
CGG
CAG
GTG
GGG
GAG
Total 12 triplet code sequences.
E. Among all these 12 codons there is only one stop codon that is TAG so the probability of this stop codon is :
1/12 = 0.083
Which of the following is an essential amino acid?
Answers
Answer:
The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
How do you think sweating works in increasing temperature
Answers
What trend, if any, is evident in Mel’s data?
Answers
The trend that is evident is: Initially, there seems to be support for Mel's hypothesis, but the gold data is not consistent with the predicted trend.
Option C is correct.
How do we calculate?The data for zinc, nickel, copper, and silver shows that as the density increases, the melting point tends to increase.
From the data we can see , the data for gold does not follow this trend, as its density is lower than silver but its melting point is higher.
Therefore, while there is some initial support for Mel's hypothesis, the inconsistency with gold indicates that the relationship between density and melting point is not solely determined by density.
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Using the following data, calculate the
population growth rate for Zambia:
CBR= 2.9%, Immigration = 1%,
CDR = 2.1%, Emigration = 1%
(Portions of the numeric data are factual.)
HINT: (CBR + Immigration) - (CDR + Emigration) = Population Growth Rate
A. 82%
C. -0.00802%
B. 0.8%
D. 8.025%
Answers
Population growth rate for Zambia is 0.8 % when CBR= 2.9%, Immigration = 1%,CDR = 2.1%, Emigration = 1% are as given above.
What is CBR?The crude birth rate is the number of live births per 1,000 of the population at the midyear census. long explanation The crude birth rate is the number of live births per 1,000 of the expected population at the midyear mark.
Given data;
CBR= 2.9%, Immigration = 1%,
CDR = 2.1%, Emigration = 1%
Now to find the Population Growth Rate use the given formula;
(CBR + Immigration) - (CDR + Emigration) = Population Growth Rate
Population Growth Rate= (CBR + Immigration) - (CDR + Emigration)
the current population of Zambia =18.92 million
now
CBR= 2.9% of 18.92 million=548680
CDR = 2.1% of 18.92 million=397320
Immigration = 1% of 18.92 million=189200
Emigration = 1% of 18.92 million=189200
now putting the values on eq.
Population Growth Rate= (CBR + Immigration) - (CDR + Emigration)
Population Growth Rate= (548680 +189200)-(397320 + 189200 )
Population Growth Rate=151360 *100/18.92 million
Population Growth Rate=0.8%
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TIME REMAINING 01:39:44 Green plants need light in order to survive. Structures in the leaves absorb light, which in turn, helps plants make their own food. Under which color of light will plants be least likely to make food? red blue orange green
Answers
Answer: green
Explanation:
Answer:
The answer is B
Explanation:
Because blue light has lower energ and the questions bolds “least likely to cook food” this answer is for edgen 2021 quiz
A testable hypothesis could be formed front which questions
Answers
A testable hypothesis is one that can be tested through empirical research, meaning that it is possible to gather evidence to support or refute it.
A hypothesis is a possible explanation that is proposed for a phenomenon that occurs in nature. In the scientific method, hypotheses are tested by collecting and analyzing data to either support or reject them.
A testable hypothesis could be formed from a question by using the following steps:
Identify the phenomenon that you want to study: Start by identifying the phenomenon that you want to study. This could be a relationship between two variables or a question about how something works. Develop a research question: Based on the phenomenon you want to study, develop a research question that can be answered through empirical research. This question should be specific and should be able to be tested using scientific methods. Formulate a hypothesis: Using your research question, formulate a hypothesis that can be tested through empirical research. This hypothesis should be a statement that proposes a possible explanation for the phenomenon you are studying. It should be clear, concise, and testable.
Test the hypothesis: Once you have developed a testable hypothesis, you can design and conduct experiments to gather data that will either support or refute the hypothesis. If the hypothesis is supported by the data, you can consider it to be a valid explanation for the phenomenon you are studying. If the data refute the hypothesis, you may need to revise it or develop a new hypothesis.
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What is a major difference between these two types of cells?
Image of a prokaryote and eukaryote
A-The location of the cytosol
B-The location of the DNA
C-The presence of a plasma membrane
D-The presence of ribosomes
its not C
Answers
Answer:c
Explanation:
Select the correct answer.
Which of these is an example of elemental carbon?
A. Diamond
B. Methane
C. Proteins
Answers
Answer: A Diamond
Explanation:
Because of it's crystalline like structure which is given by the traits exhibited by Diamond
African elephants once existed in large populations across the African continent. Elephants use their tusks to dig for water and food. Humans hunt and kill elephants for their tusks. Habitat loss and fragmentation have also reduced the total number of elephants and the size of elephant herds. Scientists estimate that the number of African elephants has decreased from several million to several hundred thousand. Population sizes range from over 100,000 individuals in Botswana to approximately 100 individuals in northern Cameroon. Scientists have also found that the frequency of elephants that never develop tusks is increasing.
Select all the statements that describe probable effects of poaching and habitat fragmentation on clephant evolution
a. The elephant population in Botswana will experience high levels of genetic drift.
b. The poaching of elephants for their tusks is leading to the evolution of tuskless elephants.
c. Having tusks does not provide a selective advantage to African elephants.
d. Habitat fragmentation leads to decreases in population size and increases in genetic drift.
e. The elephant population in Cameroon will experience high levels of genetic drift.
Answers
Answer:
Option D
Explanation:
In habitat fragmentation, a large ecosystem or habitat of any species is converted into small ecosystems in such a way that each small ecosystem remains isolated from each other. Being isolated , random genetic drift comes in picture and reduces the gene flow with in the isolated habitats.
Hence, option D is correct
In which part of a plant cell does photosynthesis occur?a. Nucleusb. chloroplastc. cell membraned. cell walli don't know, I rather not guess
Answers
Photosynthesis is a process in which the cells use sunlight in order to get energy. This process occurs only in plants containing chloroplasts, because it is in this part of the cell that photosynthesis take place. Therefore, the correct answer is B) chloroplast.