Answers
In order to isolate the impact of the third variable, it is crucial to maintain the other two constant while examining how they affect photosynthesis.
How \(CO_2\) levels affect photosynthesis?To ensure that any changes in photosynthesis we detect are due to changes in CO2 and not other variables, we must maintain the same levels of other variables, such as light intensity and colour, because in this situation, we are interested in how CO2 levels affect photosynthesis.
We wouldn't be able to tell whether any modifications in photosynthesis were brought on by changes in CO2 or by changes in light or colour if we changed the light intensity or colour while measuring CO2 levels. We can be more certain of our findings and reach more precise conclusions regarding how CO2 affects photosynthesis if we hold these variables constant.
Therefore, it is essential to keep the other two constant while analyzing how they affect photosynthesis in order to isolate the effect of the third variable.
Learn more about Photosynthesis, here:
https://brainly.com/question/29764662
#SPJ2
Related Questions
A student observes that a fallen Bryophyllum leaf has tiny plants growing along the leaf margin, as
shown in the figure.
fallen Bryophyllum leaf
new plants
-leaf margin
What form of reproduction is shown?
Answers
Answer:
Asexual (vegetative) reproduction
Explanation:
Asexual reproduction is a type of reproduction that involves only a single parent. As opposed to sexual reproduction, it does not involve the formation of sex cells or gametes.
According to this question, Bryophyllum, which is a plant known to propagate itself via its leaves is practicing a form of asexual reproduction called VEGETATIVE PROPAGATION, which is the propagation of a plant via its vegetative parts e.g. stems, leaves, cuttings etc.
A maritime polar air mass is usually
Answers
Bengal Tigers (Panthera tigris tigris) have coat colors that are either golden (the dominant trait) or white. In examining a population of Bengal Tigers found in India, researchers found that the white tiger frequency was 4%. If this population had 200 tigers with 10 heterozygotes, calculate the actual genotype frequency of the heterozygotes in the tiger population.
Answers
Answer:
5%
Explanation:
Frequency of white tigers = 4%
population of tigers = 200
number of heterozygotes = 10
Determine the actual genotype frequency of Heterozygotes
frequency of heterozygotes = Number of heterozygotes / population
= ( 10 / 200 ) * 100
= 0.05 * 100 = 5%
Please solve this lab reportJohn had a science fair project that he needed to do. He wanted to test the effects that organic and chemical fertilizers had on plant growth. John predicted that the organic fertilizer would make the plants grow taller. He used three pots, three of the same type of seed, soil, organic fertilizer, chemical fertilizer, water, and a ruler. John put soil in the pots. He added chemical fertilizer to the first pot, organic fertilizer in the second pot, and no fertilizer in the third pot. He then planted one seed in each pot. John had to water the pots daily. He also checked for growth and took measurements for a period of 10 days. He measured the height of the plants. FIll out this templatePractice Writing a Lab Report Instructions: Use the lab example given to complete the Practice Writing a Lab Report activity. Please fill in this lab report with the appropriate information and data. Title: Include your name, instructor’s name, and the name of the lab Objecti
Answers
Answer:
This question is incomplete; the complete part is: what are the independent, dependent, and controlled variables?
Independent variable: ORGANIC AND CHEMICAL FERTILIZERS
Dependent variable: HEIGHT OF PLANT
Controlled variable: Same type of seed, water
Explanation:
Independent variable is the variable that is changed or manipulated by the experimenter. In this question, John wanted to test the effects that organic and chemical fertilizers had on plant growth. Hence, the independent variable is the ORGANIC AND CHEMICAL FERTILIZERS used.
Dependent variable is the variable that responds to changes made to the independent variable. The dependent variable is the variable that is measured in an experiment. In this case, the HEIGHT OF PLANTS MEASURED is the dependent variable.
Controlled variable or Constant is the variable that is kept unchanged throughout the experiment in order not to influence the experimental result or outcome. In this case, the controlled variable is the SAME TYPE OF SEED USED, WATER.
Dependent Variable: height of the plants
Controlled Variable: seed, soil, water
25. (10.04 MC)
Which of the following items should be included in a family preparedness plan?
1. A survival kit
II. An evacuation plan
III. A list of valuable furniture
IV. A list of emergency contacts
(1 point)
I and Il only
II and III only
I, II, and III
I, II, and IV
Answers
Answer:
I,II and IV
Explanation:
A Survival kit with everything needed for emergencies. contacts of family and doctors and a plan to get to safety.
Bacterial and viral infections of the brain are rare because the ________ prevents most viruses, proteins, and bacteria from entering the cerebrospinal fluid.
Answers
Answer:
blood-brain barrier
Explanation:
The brain is well protected against microbial invasion by cellular barriers, such as the blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB). In addition, cells within the central nervous system (CNS) are capable of producing an immune response against invading pathogens.
if you think a particular gene is overexpressed in hereditary pancreatic cancer, would you compare the gene expression patterns of the hereditary tumor to the gene expression pattern of normal, noncancerous tissue, tissue from a nonhereditary pancreatic tumor, or both? please choose the correct answer from the following choices, and then select the submit answer button. answer choices neither tissue both noncancerous tissue and nonhereditary tumor nonhereditary tumor noncancerous tissue
Answers
Is pancreatic cancer inherited? I'd estimate that 20 to 30 percent of those who are diagnosed with pancreatic cancer may also have a hereditary cancer.
What connection is there between cancer and gene expression?A disease with altered gene expression is how cancer can be characterized. Numerous proteins can be activated or silenced (gene activation or gene silencing), which significantly changes the way a cell functions as a whole.
Can a DNA damage sensor that is overexpressed lead to cancer?The ability to repair additional DNA damage will be inadequate if genes required for DNA repair are silenced, which will lead to an accumulation of additional damages. Such additional DNA harm will increase the errors made during DNA synthesis, resulting in mutations that may result in cancer.
To know more about pancreatic cancer visit :-
https://brainly.com/question/29695257
#SPJ4
As a teacher you must ensure that all learners are accommodated in your classroom. Design a poster for your class. The poster should make learners aware about accommodating each other. Mention at most four strategies that you will use to make learners aware. For each strategy show how learners should behave towards each other. The title of your poster should be “INCLUSION IN OUR CLASSROOMS”. Your poster size must be an A4 paper. The poster should be neat and attractive. Your poster should not be handwritten.
Marking criteria
Poster appearance (4)
Strategies (8)
Learners’ behaviour (8)
Total 20
Answers
The strategies that include in poster are Respect, Collaboration, Listening and Kindness where learners can create a safe and welcoming environment that celebrates diversity and promotes inclusion.
As a teacher, it is important to promote inclusion in the classroom and create a safe and welcoming environment for all learners. To achieve this, a poster titled “INCLUSION IN OUR CLASSROOMS” can be designed to raise awareness among learners. The poster can be designed with bright colors, images, and fonts to make it attractive and eye-catching.
Four strategies that can be included in the poster are:
Respect: Encourage learners to respect each other's differences and backgrounds. This means not making fun of others for being different and accepting everyone for who they are.
Collaboration: Encourage learners to work together and support each other. This means helping each other with schoolwork and projects, and not leaving anyone out.
Listening: Encourage learners to listen to each other's opinions and ideas. This means being open-minded and respectful of other people's views.
Kindness: Encourage learners to be kind to one another. This means being friendly, helpful, and considerate of others.
For each strategy, learners should be encouraged to behave in a specific way. For example, for the strategy of respect, learners can be encouraged to behave by avoiding negative comments and treating each other with kindness and respect. For collaboration, learners can be encouraged to work together in groups and share their ideas. For listening, learners can be encouraged to pay attention to each other and ask questions to understand each other better. Finally, for kindness, learners can be encouraged to show acts of kindness towards each other, such as helping each other with schoolwork or simply being friendly.
In conclusion, promoting inclusion in the classroom is vital for creating a positive and supportive learning environment. The "INCLUSION IN OUR CLASSROOMS" poster can serve as a reminder for learners to respect, collaborate, listen and be kind to each other. By following these strategies, learners can create a safe and welcoming environment that celebrates diversity and promotes inclusion.
Know more about Poster here:
https://brainly.com/question/29381158
#SPJ11
What is the weight of a green June beetle
Answers
After dehydration, a green June beetle weighs around 1.5 grams.
What is the lifespan of a June bug?The larvae pupate after three years of eating on plant roots, emerge as adults in late summer, and then burrow themselves for the winter. The adults reappear in the spring and feed on whatever nearby vegetation is still there. Adults only live for around a year. The Cotinus nitida, or green June beetle, is a roughly one-inch-long metallic green insect. Body margins range from bronze to yellow, while wing coverings occasionally have a reddish-brown tint. Pupae are brown and measure half an inch in length, while larvae, or "grubs," are cream-colored and can range in length from a quarter inch to two inches.
To know more about green June beetle refer to:
https://brainly.com/question/860104
#SPJ1
please help to know this question
Answers
Answer:
spontaneous generation is the correct answer
Explanation:
What causes a mutation?
The translation of RNA into the language of amino acids
O The production of a complementary strand of DNA
O Frequent replication of DNA
O An error in DNA replication
Answers
Answer:
C
Explanation:
Sometimes cells make mistakes in copying their genetic information, causing mutations. Mutations can be irrelevant, or they can affect the way proteins are made and genes are expressed.
Research the practical for osmosis and write notes on it.
Answers
Investigate the effect of a range of concentrations of salt or sugar solutions on the mass of plant tissue
Scientists investigate the effects of osmosis on living cells. They either:
Observe (with a microscope),cells or tissues placed in solutions of different concentration.
Measure changes in cylinders or discs of fresh potato or beetroot. Cylinders will have a larger mass than discs, so scientists will have larger measurements to work with.
The following experiment investigates the effect of different concentrations of sucrose on potato tissue. It could also be carried out using salt – sodium chloride solution – instead of sucrose.
Aims of the experiment
To investigate the effect of a range of sucrose solutions on the mass of potato cylinders.
To determine the concentration of the cell sap of potato cells.
Method
Prepare a range of sucrose (sugar) solutions. The concentration of a solution is measured in moles per cubic decimetre written as mol dm-3. For example, in this experiment your range could be from 0.2 mol dm-3 to 1.0 mol dm-3. A 1.0 mol dm-3 solution of sucrose will contain up to 342 g of sucrose per dm-3. A 1.0 mol dm-3 solution of a substance contains one mole of the substance per dm3 of a solution, or one mole per litre of solution.
Set up a series of boiling tubes with each of these solutions. Also, set up one containing distilled water. This will have a concentration of sucrose of 0.0 mol dm-3 and will act as the control in the experiment.
Make sure each tube is labelled with the concentration.
Carry out the investigation. Prepare a blank results table before you begin. Make sure when weighing the potato cylinders, that their masses are not mixed up when recording them. Each cylinder will have a different mass before and after the investigation.
For each sucrose concentration, repeat the investigation for several potato cylinders. This allows you to make the experiment more repeatable – not all potato cylinders might behave in the same way. Making a series of repeat experiments means that any anomalous results can be identified and ignored when a mean is calculated.
Risks
Make sure that the potato is placed on a ceramic tile when using the cork borer – do not cut the potato cylinders towards your hand.
Care must be taken when using the scalpel.
Wear eye protection when using chemical solutions.
This experiment shows the effect of osmosis on plant tissue. The cylinders will decrease or increase in mass if they lose or gain water by osmosis.
The effects on plant tissues at a cellular level can be observed using a microscope. Another way of looking at osmosis in plant cells is to mount a piece of onion skin, or beetroot on microscope slides in drops of different concentrations of sugar or salt. Observe the cells for a few minutes. It is easy to see the process of plasmolysis in beetroot because the cell sap is red.
During photosynthesis, water molecules absorb energy from the sun. What do you think this energy does to the water molecule?
Answers
Help please and thank you :) .(Cycling of matter and energy flow quick check).
1. Which of the following describes the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration?
-Gross Primary productivity
-Biomass
-Net Primary productivity
0r
-Primary productivity
2. Suppose a plant is eaten by a mouse, the mouse is consumed by a snake, and the snake is in turn consumed by a hawk. What could be assumed about the level of available organic matter in the mouse versus the plant?
-There will be less organic matter available.
-There will be more organic matter available.
-Organic matter does not transfer between the plant and the mouse.
0r
-They both have the same amount of organic matter.
3. How does biomass change from lower to higher trophic levels?
-It fluctuates.
-It increases.
-It decreases.
0r
-It stays the same.
4. The incomplete burning of _____ in gasoline is known to create black carbon and contribute to global warming.
-ethanol
-methane
-carbon
0r
-carbon dioxide
5. Why are there less secondary consumers in an ecosystem than producers?
-Around 90% of energy from one trophic level to the next is available.
-There is less land to use for habitat after the producers grow.
-More tertiary consumers will eat secondary consumers over producers.
0r
-There isn’t enough energy available to support more secondary consumers.
...Thanks...
Answers
Answer: 1. Net primary productivity
2. there will be less organic matter available
3. it decreases
4. ethanol
5. there isn’t enough energy available to support secondary consumers
Explanation:
1. Gross Primary productivity is the organic material that is left after subtracting energy used for respiration. It is always greater than net primary productivity.
2. There will be less organic matter available for the mouse because plant is a primary producer of biomass and it lies at the lowest trophic level as we go up in the trophic level the level of energy reduces.
3. The biomass will decrease while going from lower to higher trophic levels this is because of the fact that the plants or other autotrophs are the primary producers of biomass.
4. The incomplete combustion of gasoline and methane are the major fuels contributing to global warming.
5. There are less secondary consumers in an ecosystem because more tertiary consumers are dependent on secondary consumers for their food and energy requirements.
Learn more about gross primary productivity:
https://brainly.com/question/11730407
FIRST QUARTER
WORKSHEET 3
DOING SCIENTIFIC INVESTIGATION
Answers
In various situations, scientists employ a variety of investigational techniques. These techniques include fair testing, recognising and classifying, modelling, pattern seeking, and studying (in no particular order) in Scientific investigation.
The scientific method's seven steps for Scientific investigation
Pose a query - A question you want answered is the first stage in the scientific approach.Perform analysisForm your hypothesis.Try out your theory with an experiment.Make a discoveryAnalyze the findings, then come to a conclusion.Describe the findings.According to research, fair testing dominates Scientific investigation.
Descriptive investigationComparative investigationExperimental investigation are the three sorts of studies that scientists employ to explore and create answers for phenomena in nature.The complete question is :
What are the steps to be followed while doing a scientific investigation?
Learn more about Scientific investigation
https://brainly.com/question/8386821
#SPJ9
Billy is sitting in a chair in class if the action force is the downward push of his way on the chair what is the reaction force
Answers
Answer:
Two forces: Gravity and the Support force that apposes it
Explanation:
:)
The three parts of the diagram above are in chronological order. In the space below, identify the blue segment and the yellow segment, then describe and explain the process that has occurred. (a four to six sentence paragraph is expected!)
Question 1 options:
Answers
Transcription is the process of creating mRNA by copying a DNA template strand. It involves the separation of DNA strands, mRNA synthesis, and mRNA exiting the nucleus for further transcription in the cytoplasm.
Transcription is the process of copying a portion of the DNA template strand in order to create mRNA. The blue section represents DNA, whereas the yellow segment represents mRNA.The first step before protein assembly is to create messenger RNA or mRNA. Transcription is the process through which messenger RNA, or mRNA, is created. This occurs in the nucleus and is accomplished by using fragments of DNA molecules.We can detect two distinct segments when the DNI molecule breaks into two strands to produce the transcription bubble: the coding strand and the template strand.The coding strand grows in the direction 5' to 3', whereas the complementary strand (template strand) develops in the opposite way.The template strand is the one that will be supplemented with mRNA. The initial DNI strand is read by RNA polymerase for mRNA synthesis.The mRNA molecule develops complementary DNA base sequences. That is, mRNA derived from DNA adenine and uracilcytosine and guanineadenine and thyminecytosine, guanine When mRNA synthesis is completed, the molecule exits the nucleus to begin transcription in the cytoplasm.Summary: 1 - The blue part represents a DNA molecule. The yellow region contains one mRNA molecule and one DNA molecule. 2- Separation of the DNI molecule into two strands and growth of the mRNA molecule. 3- mRNA molecules that have already been synthesized and isolated from DNAFor more questions on Transcription
https://brainly.com/question/30765476
#SPJ8
Categorize the structures as homologous or analogous.
Answers
Answer:
Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.
Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.
Organs or skeletal components of animals and organisms that, by virtue of their similarity, suggest a connection to a common ancestor are known as homologous structures. These structures need not all look the same or serve the same purpose.
The forelimbs of vertebrates are a common illustration of homologous structures. The forelimbs of four-legged vertebrates like dogs and crocodiles, the arms of primates, the front flippers of whales.
Learn more about homologous structures:
https://brainly.com/question/7904813
#SPJ2
DNA contains the codes for the production of ____
Answers
Answer:
proteins.
Explanation:
The DNA code contains instructions needed to make the proteins and molecules essential for our growth, development and health.
which of these structures is the largest?
group of answer choices
A. Chromosome, Genome, Nucleotide, Gene
B. Chromosome, Gene, Genome, Nucleotide
C. Genome, Chromosome, Nucleotide, Gene
D. Genome, Chromosome, Gene, Nucleotide
Answers
Option d) Genome, Chromosome, , and Nucleotide, Gene is the largest structures .
The information molecule is DNA. It contains information needed to create proteins, which are other big molecules. These instructions are dispersed throughout 46 lengthy structures called chromosomes that are found within each of your cells. Many smaller pieces of DNA, known as genes, make up these chromosomes.
The structure of DNA is a double helix, which is made up of two connected strands that loop around one another to resemble a twisted ladder. Deoxyribose and phosphate groups alternately form the backbone of each strand. One of the four bases—adenine (A), cytosine (C), guanine (G), or thymine—is joined to each sugar (T).
Learn more about Genome
https://brainly.com/question/29482089
#SPJ4
In the food chain below each organism will eat ten of the organism below them in the food chain. If there is 1 gram of mercury found in the plant plankton, how much mercury would a person ingest from eating one tuna? (for reference 1 gram = 0.0022)
Answers
The amount of mercury in each organism is going to be ten times greater than that in the organism below it because each organism in the food chain consumes ten times its own weight in food. Therefore, the following formula can be used to determine the amount of mercury in each organism:
Plankton: 1 gramSmall fish: 10 grams (10 x 1 gram)Medium fish: 100 grams (10 x 10 grams)Large fish: 1000 grams (10 x 100 grams)Tuna: 10000 grams (10 x 1000 grams)Therefore, one tuna would contain 10,000 grams, or 10 kilograms, of mercury. When we convert this to grams, we obtain:
10 kg = 10,000 g
By multiplying by the 0.0022 conversion factor, we obtain:
10,000 g times 0.0022 equals 22 grams
Therefore, a person would ingest 22 grams of mercury from eating one tuna.
Learn more about Mercury, here:
https://brainly.com/question/2279846
#SPJ1
does the efficiency of a cell depends on its complexcity
Answers
Answer:
No, the efficiency of a cell does not always depend on its complexity
Explanation:
hope it helps
How does propagation occur in DNA and RNA?
Answers
Answer:
Life on earth is very diverse, from single-celled protozoans to complex multicellular plants and animals. But at the molecular level, all life is fundamentally made up of the same building blocks – DNA and RNA. One of the primary differences between DNA and RNA is that DNA is double-stranded while RNA is single-stranded.
Q. Is the following equation balanced?... Al + O2 --> 2Al2O
Answers
Answer: no
Explanation: balanced vers. 2Al+O2 =2AlO
Compared to the Jovian planets in our solar system, the terrestrial planets have
Answers
Answer:
The main atmosphere of terrestrial planets is a gaseous mix of carbon dioxide and nitrogen gases and all of terrestrial planets have rocky surfaces. Jovian planets are larger and further from the sun and rotate faster and have more moons,rings, and have less dense cores than terrestrial planets.
Is it a scientific theory or a scientific law that the characteristics of living things change over time?
Answers
Answer:
Scientific Theory
Explanation:
The statement "the characteristics of living things change over time" refers to the concept of biological evolution, which is widely accepted as a scientific theory in the field of biology. In scientific terms, a theory is a well-substantiated explanation of a natural phenomenon that is supported by extensive evidence, experimentation, and scientific consensus. The theory of evolution, proposed by Charles Darwin and further developed over time, provides a comprehensive explanation for the diversity and change in the characteristics of living organisms. It is supported by a vast body of evidence from various scientific disciplines, including genetics, paleontology, comparative anatomy, and molecular biology.
In contrast, scientific laws describe observable patterns or regularities in nature that are often expressed as mathematical equations or principles. Laws, such as Newton's laws of motion or the laws of thermodynamics, describe specific relationships or behaviors in the physical world.
Therefore, the statement about the characteristics of living things changing over time aligns with the theory of evolution, rather than being described by a scientific law.
Hope this helps!
Does the father of the first generation have albinism?
Does the mother of the first generation have albinism?
How many carriers in this family?
How many normal people in this family?
How many diseased people in this family?
HELPP the one with the pedigree chart
Answers
The mother of the first generation does not have albinism, there are 7 carriers in this family, there are 11 normal people in this family, and 7 diseased people in this family.
What is a genealogical pedigree of a given inherited disease state?A genealogical pedigree of a given inherited disease state refers to the presence of a deleterious variant that is present in a family and can be traced through their descendence.
Therefore, with this data, we can see that the genealogical inheritance pattern of a given inherited disease state is possible to be identified.
Learn more about a pedigree here:
https://brainly.com/question/15589113
#SPJ1
Most serious side effects occur when steroids are
O prescribed by doctors.
O taken by children.
O absorbed through the skin
O taken for long periods.
Answers
What is the function of the nucleolus?
Please hurry it has to be 5-15 words and it can not be exact as what it says online
Answers
Answer:
It controlls and regulates the activities of the cell
It controlls the protien and enzyme synthensis.
It controlls the cell division and cell growth.
It is the storage of DNA,RNA and ribosome.
It controlls the heredity characteristics of the body.
Which of the following would be an example of an R-selected species?
Answers
An example of an R-selected species would be one that produces a large number of progeny with small size. So, the correct option is C.
R-selected species are characterized by their reproductive strategy, which focuses on producing a large number of offspring with relatively small size. These species prioritize quantity over quality when it comes to offspring production.
Option ''Large number of progeny with small size'' represents an example of an R-selected species. These species typically have a high reproductive rate and invest minimal resources in individual offspring. By producing a large number of progeny, they increase the chances of survival and successful reproduction in unpredictable or unstable environments.
In contrast, options A) Small number of progeny with small size and B) Small number of progeny with large size represent strategies more commonly associated with K-selected species. K-selected species prioritize quality over quantity, producing fewer offspring but providing them with greater parental investment and resources, resulting in larger size and higher survival rates.Option D) Large number of progeny with large size is less commonly observed in nature and does not align with the reproductive strategy of either R-selected or K-selected species.Therefore, the correct option is C.
For more questions on species
https://brainly.com/question/14275326
#SPJ8
Complete Question:
Which of the following would be an example of an R-selected species?
A) Small number of progeny with small sizeB) Small number of progeny with large sizeC) Large number of progeny with small sizeD) Large number of progeny with large size