Answer:
1. A clock with internal mechanical parts comprises a system because it is a combination of various parts that a heterogeneous in nature and function working together to achieve one end - indicating the time accurately.
Some mechanical clocks comprise of at least 10 parts namely:
Gear train: This component alone is a sub-system that comprises of at least 8 parts. These parts are broadly classified into wheels, pinions, and barrels.Main SpringPalletEscapement Escapement WheelBarrell Barrell WheelBalance Spring etc2. A clock is a non-living system.
Living systems have certain characteristics. Some of them are:
Stimuli: Response to the environmentGrowth and development: The are able to increase in size and dimensionsHomeostasis: this is the capability of self-regulation regardless of external conditions such as temperature and pressure. etc3. A cannot support a living system. It can however help a human being (which is essentially a combination of various systems) to tell the time.
4. a system is a combination of heterogeneous parts that work in unison to form a whole complex entity that can perform one or more functions.
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Which purpose does a cell membrane play in eukaryotic cells?
The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.
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In what kind of aquatic ecosystems do we have invasive species? |
sometimes called exotic, invasive, nonindigenous or non-native) are aquatic organisms that invade ecosystems beyond their natural, historic range. Their presence may harm native ecosystems or commercial, agricultural, or recreational activities dependent on these ecosystems.
Explanation:
Select all of the following that describe RNA?
Answer:
there is no choices
Explanation:
what
How does the Edge Effect impact biodiversity?
Answer:
In ecology, edge effects are changes in population or community structures that occur at the boundary of two or more habits. As the edge effects increase, the boundary habit allows for greater biodiversity.
Explanation:
One primer attaches to the __ end of the gene region on the 5' to 3' strand, another to the ___ end of the gene region of the 3' to 5' strand. This was maybe not explicit in the video. 3’ and 5’ refer to the orientation of the DNA strand. The 3’ end is the end that has the OH group used for adding new nucleotides. The 5’ end is the end where a phosphate sticks out from the ribose. The two strands that make up the DNA molecule run anti parallel to each other. Synthesis is always in the 5’ to 3’ direction (because that is where new nucleotides attach), and the template strand is read 3’ to 5’ (because it runs antiparallel).
Answer:
Explanation:
This question is incomplete however during DNA amplification using polymerase chain reaction, the two primers attach to each DNA strand at the 3' end.
Two primers are used during this process; one primer each for the two complementary strands of DNA (that run antiparallel to each other). The 5' end of each primer is attached to the 3' end of each DNA strand regardless of the direction the strand is running (5' to 3' or 3' to 5'). This process of attaching the primers to the DNA strand is known as annealing.
Which types of rocks can become metamorphic rock?
both igneous and metamorphic rock
clastic sedimentary rock
both igneous and sedimentary rock
clastic or chemical sedimentary rock
Answer:
both igneous and metamorphic rock I believe
Explanation:
I I learned this in fourth grade I'm not sure if I'm correct if I remember correctly then it's these two sorry if it's wrong also tell me if it's wrong I'll try to tell you the right answer if it is wrong okay
Answer:
igneous, sedimentary, metamorphic all can
Explanation:
JL = 100; JY = 4x - 10; Find the value of X*
K
J
JL = 100
4x - 10
M
L
In ecology, an ecosystem is similar to
a community. However, an
ecosystem differs in that it
includes...
Hyperventilation (rapid inhalation and exhalation) can result in respiratory alkalosis (increased blood pH). Why
Answer:
Because lack of carbon dioxide causes the lack of acidic HCO₃⁻ which help to the regulation of the blood's pH.
Explanation:
Hello.
In this case, since the presence of carbon dioxide in blood regulates the pH of blood by maintaining it at about 7.35 to 7.45 (slightly basic) due to the equilibrium shown on the attached picture by which the yielded HCO₃⁻ ions low down the pH because the lack of CO₂ cause a condition known as respiratory alkalosis in which the pH of the blood significantly increases.
Thus, that condition causes symptoms such as confusion, hand tremor, lightheadedness., muscle twitching, nausea, vomiting and others.
Regards.
Why is cellulose so difficult for most animals to digest?
Answer:
They dont have the needed enzymes to break cellulose sown so if they eat it then they will get sick.
Explanation:
particles is found in the nucleus of an atom
Answer:
protons and neutrons
Explanation:
Protons and neutrons have a positive and neutral charge, respectively. They are in the nucleus, while the negative electrons orbit the nucleus.
Answer:
Protons, neutrons, electrons
Explanation:
If you're asking about subatomic particles.
Budding is a type of asexual reproduction. Which of the following is an disadvantage for asexual reproduction?
What of the following organisms transforms radiant energy into
chemical energy?
O Butterfly
O Grass
O Mouse
O Deer
Answer:
B) Grass
Explanation:
Grass uss=es the radiant energy from the sun and turns it into chemical energy for food.
19. This picture represents what type of cell transport?
OUTSIDE
CYTOPLASM
A. Endocytosis
B. Exocytosis
C. Osmosis
D. Passive Transport
Answer:
d
Explanation:
Which of these molecules is NOT a Protein molecule?
Keratin
Hemoglobin
Lactase
Estrogen
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Organisms that rely on other living things for food are called what?
Answer:
heterotroph
Explanation:
I asked google
DNA sequences can act as "tape measures of evolution". Scientists analyzing the human genome sequence were surprised to find that some of the regions of the human genome that are most highly conserved (similar to comparable regions in other species) don't code for proteins. What is a possible explanation for this observation? EVOLUTION CONNECTION sequences can act as "tape measures of evolution". Scientists analyzing the human genome sequence were surprised to find that some of the regions of the human genome that are most highly conserved (similar to comparable regions in other species) don't code for proteins. What is a possible explanation for this observation?
Answer:
Non-coding DNA regions play important roles in regulating transcriptional activity by encoding different types of non-coding RNAs (ncRNAs), acting as scaffold attachment regions, acting as enhancer specific regions, etc.
Explanation:
Historically, it had been believed that non-coding DNA sequences were 'junk DNA' since they don't encode for proteins (beyond the sequences that are transcribed into functional non-coding RNAs, i.e., transfer RNA and ribosomal RNA). However, in the last years, it has been shown that non-coding DNA sequences play critical roles in regulating gene expression and genome function. For example, evolutionary conserved non-coding RNAs (ncRNAs) with regulatory roles on gene expression such as, for example, long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) have been mapped in non-coding DNA sequences, thereby evidencing the functional significance of these regions. In consequence, the conservative nature of certain non-coding DNA sequences evidence that mutations in such regions may have significant deleterious effects, and thereby they could have a negative impact on the fitness of the individual.
An aqueous solution of compound x has a ph of 12. which of the following is a possible identity of compound x?
Answer:KOH
Explanation:An aqueous solution of compound X has a pH of 12. Which of the following is a possible identity of compound X?
In meiosis when the cells divide again, what happens to the number of chromosomes?
attributes of groups that have been retained from a common ancestor are referred to as what
Answer:
Ancestral
Explanation:
Activity
Fish are sensitive to many environmental variables: dissolved oxygen, light, temperature, pH, clarity of water, food supply, presence of predators, etc. Fish will be attracted to different locations in a lake, based on its mix of variables.
Imagine you want to conduct an experiment to understand how just one of these variables differs in a local lake, depending on its depth. This lake reaches a depth of 17 meters. For this activity:
Pick a variable that might change as you go deeper in the lake on a given day.
Do a little research on that variable to determine how you might measure it in a lake.
Use the template below to outline an experiment to investigate this variable in the lake by depth. For each part, simply answer the question in parentheses to create your outline.
Type your response to each field in the space below that field:
Title: (Enter a brief, descriptive title. Hint: Sometimes it’s best to do this las
Complete question:
Fish are sensitive to many environmental variables: dissolved oxygen, light, temperature, pH, clarity of the water, food supply, presence of predators, etc. Fish will be attracted to different locations in a lake, based on its mix of variables.
Imagine you want to conduct an experiment to understand how just one of these variables differs in a local lake, depending on its depth. This lake reaches a depth of 17 meters. For this activity:
Pick a variable that might change as you go deeper in the lake on a given day.
Do a little research on that variable to determine how you might measure it in a lake.
Use the template below to outline an experiment to investigate this variable in the lake by depth. For each part, simply answer the question in parentheses to create your outline.
Type your response to each field in the space below that field:
Title: (Enter a brief, descriptive title. Hint: Sometimes it’s best to do this last.)
Purpose: (Why are you doing this experiment?)
Hypothesis: (What do you predict from this experiment and why?)
Procedure/Method: (How will you specifically carry out your experiment to test your prediction?)
Observations: (What specifically would you look for and record?)
Data analysis: (With this kind of data, what would be the best way to present it?)
Conclusion: [No need to enter anything here for now.]
References: (List any references you used to design the experiment. Note that for a full experiment write-up you’d also list any references you used while carrying out the experiment or in analyzing your results.)
Answer and Explanation:
Variable: dissolved oxygen
Title: Oxygen variation as a water quality indicator.
Purpose: To study how dissolved oxygen varies with depth
Hypothesis: The percentage of dissolved oxygen will decrease as depth increases.
Procedure/Method:
Selection of sampling spots, according to the morphometry of the lake, different depth, water currents inputs and outputs, aquatic vegetation, and lake type of use. In each spot water samples will be taken using a Niskin bottle. The sample will be taken from different depth: 5 meters deep, 10 meters deep, and 15 meters deep (photic zone). Dissolved oxygen (DO) will be measured in each sample, by using a multiparameter sensor. In a field sheet to evaluate the parameter, the %DO by site and depth will be recorded.Observations:
%DO in each site and depth will be recorded in order to analyze how it varies with depth.
Data analysis:
According to different indicators of water quality in a lake, the observed %DO will be compared and analyzed to evaluate the sanity state of the lake water. Example of valuation scale,
NORMAL index: Oxygen concentration in the water column is found to be sufficient for the fish survival
REGULAR: Decrease in oxygen concentration at greater depth, values below saturation in the background
CRITICAL: Null oxygen concentration in all or part of the column profile of water. Probable fish mortality events.
According to the taken data, observations on the study site will be taken, such as the variation in oxygen concentration as it gets deeper, until reaching hypoxia level, where fishes can not survive. Data can be presented in tables and in graphs, in both cases comparing sampling sites and depth, making a focus on the valuation scale.
Conclusion:
Association of the oxygen variation with the sanity state of the lake, microbiology decomposition processes at different depths, eutrophication state, among others.
References:
- Quality monitoring in San Roque waters. INA-CIRSA. 02/26/2013
- Quality Monitoring Program of Water from Los Molinos Reservoir. Articulation and Institutional Synergy for the Water Resources Preservation. Cossavella A, Bazan R. 2018
- Limnology course. Córdoba National University, UNC, 2018
In a rainforest food chain, caterpillars and butterflies eat orchid plants. Toucans eat the caterpillars and butterflies. Leopards eat the toucans.
Which statement describes the energy in this food chain?
The leopards gain energy directly from the butterflies.
The orchids have the least amount of available energy.
The caterpillars gain energy directly from the orchids.
The toucans have more available energy than the butterflies.
Genetics is the most important factor that affects your physical fitness.
Answer:
The caterpillars gain energy directly from the orchids.
Explanation:
The correct answer would be that the caterpillars gain energy directly from the orchids.
Since the caterpillars feed on the orchid plant, they gain their energy directly from it. The orchid plant represents the primary producer in the food chain while both the caterpillars and the butterflies are primary consumers.
The leopard does not gain its energy directly from the butterflies because the animal does not feed directly on the butterflies. The orchid has the highest amount of energy available because it gets its energy from the sun through photosynthesis. The toucans cannot have more energy available than the butterflies because the more you move up the food chain, the lesser the energy available.
Which distribution pattern in species can be considered the most easily measurable
Answer:
local endemics
Explanation:
The most common distribution pattern in species can be considered by their geographical distribution, as different species get distributed as per their climate and the different regions that suit them the most.
What is the significance of the geographical distribution?It is significant because they differ in different parts of the world and provide suitable climatic and other environmental conditions for various animals, plants, and microorganisms to live and evolve. Its significance can be seen in the difference between the life forms in the temperate area and those in the Antarctic area.
Hence, the most common distribution pattern in species can be considered by their geographical distribution, as different species get distributed as per their climate and the different regions that suit them the most.
Learn more about the geographical distribution here.
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The diagram below shows the exchange of carbon dioxide (CO2) and oxygen (O2) between a cell and the blood flowing through a capillary.
In this diagram, the molecules of CO2 (represented by x’s) are moving from an area of--
Answer:
From an area of higher concentration to an area of lower concentration.
Explanation:
The molecules of CO2 are moving from an area of higher concentration to an area of lower concentration. Carbondioxide is produced as waste product in the cell during the process of respiration. This carbondioxide gas is loaded in blood cells because in the cell, concentration of carbondioxide gas is higher while on the other hand the concentration of carbondioxide is lower in the blood cells. This carbondioxide gas exchange in the lungs with oxygen which is required in the process of respiration for the production of energy in the form of ATP molecules. So from the conclusion we can say that CO2 moves from an area of higher concentration to lower concentration.
Francine is developing a model of the carbon cycle, which involves the movement of carbon among various Earth systems. She begins by drawing the diagram shown below.Her friend Byron evaluates the model, and suggests that she thicken the arrow leading from fossil fuels to the atmosphere. His reasoning is that fossil fuels are being burned at a much faster rate than natural processes are restoring them. A. The model shows that their combined effects determine the amount of solid carbon compounds in the geosphere.
B. The model shows that their combined effects determine the level of carbon dioxide that dissolves in the hydrosphere.
C. The model shows that they have identical effects on carbon dioxide levels in the atmosphere.
D. The model shows that they have opposite effects on carbon dioxide levels in the atmosphere.
The missing part of this incomplete question is :
How does Francine's model show the effect of photosynthesis and cellular respiration on Earth systems?
Answer:
The correct answer is - option D. The model shows that they have opposite effects on carbon dioxide levels in the atmosphere.
Explanation:
Cellular respiration and photosynthesis are two major processes are involved in the carbon cycle and both have the opposite effect on carbon dioxide levels in the atmosphere.
Photosynthesis uses carbon dioxide from the atmosphere to produce glucose with the reaction with the water whereas cellular respiration produces energy and carbon dioxide that is restored in the atmosphere.
Thus, both the processes have the opposite effect on the carbon dioxide levels in the atmosphere as photosynthesis decreases and cellular respiration increases in the atmosphere.
during photosynthesis, what is the source of the carbon i the sugar that is created
Answer:
Plants get the carbon from the air that humans exhale. They breath it in and use it for photosynthesis.
Explanation:
Took biology last year.
During photosynthesis, what is the source of the carbon is the sugar that is created is carbon dioxide in the air.
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.Carbon dioxide serves as the source of carbon, and it enters the photosynthetic process in a series of reactions called the carbon-fixation reactions (also known as the dark reactions).Stages of photosynthesis:
(i) Absorption of light energy by chlorophyll.
(ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
(iii) Reduction of carbon dioxide to carbohydrates.
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brainly.com/question/9498584
1. Explain how a bacteriostatic antibiotic is useful even if it does not result in the death of the pathogen.
2. Give an example of when you would want to use a broad-spectrum antibiotic and when you would want to use a narrow-spectrum antibiotic. Give a disadvantage to using a broad-spectrum antibiotic.
3. Explain how organisms can develop resistance to chemical disinfectants.
4. Describe how avoiding the use of antibiotics for viral infections can prevent the spread of antibioticresistance.
Answer:
1- the bacteriostatic effect refers to the fact that they stop the metabolism of pathogenic bacteria, which means that they do not reproduce, do not colonize and do not generate the disease.
Bacteria in order to trigger a pathogenic response need to comply with their metabolism and this does not happen in the bacteriostatic effect.
2- Broad spectrum antibiotics where the patient's life is at risk, difficulty swallowing or breathing, and in infections that involve many planes or we are facing an extremely complex buofilm.
Low-spectrum antibiotic, in mild, focal infectious diseases that do not compromise the systemic factor and are suspected of simple or little complex pathogens.
3-Through mechanisms and virulence factors that are transmitted between them. One mechanism is sporulation, the change of essential metabolite, among others.
4- Prevents the spread and resistance because it reduces the bacterial load of pathogenic bacteria that in the future could form bacteruphages.
Explanation:
Broad spectrum antibiotics cover many bacteria, that is, they kill many bacteria of different families and even characteristics, while low spectrum antibiotics are the opposite.
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tbh I'm pretty sure this is right
Which of the following is not a pure substance?
Answer:
Examples of materials that are not pure substances include gravel, your computer, a mixture of salt and sugar, and a tree.
Explanation:
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10. In the process of photosynthesis, chlorophyll serves as ___.
a. An end product
b. A raw material
c. An energy converter
d. A hydrogen acceptor
Answer:
c. an energy converter
Explanation:
