A student is measuring plant growth in an experiment. Using the same species of plant, he places one plant in the dark and one in artificial light. He hypothesizes that, over time, the plant in the artificial light will grow larger than the plant in the dark. What is the dependent variable in this experiment? Artificial light Plant growth over time Species of plant Time in light versus dark
Answers
A dependant variable is a variable in an experiment that is being studied or measured. A dependent variable's value depends on another.
Keeping this in mind, the dependent variable would be plant growth over time. The plant's growth is affected by its light source, the amount of time it's in the light/darkness, and the species of plant.
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Related Questions
DNA is formed using four kinds of base subunits. In a double-stranded segment of DNA, the percentage of the base C is 18%. What is the approximate percentage of base T?
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Answer:
The correct option is C 32%
According to Chargaff’s rule in a DNA molecule A = T and G = C and A + G + C + T = 100%. Here cytosine (C) is 18% hence G = 18%
∴
A + T = (100 – 36)%
∴
A + T = 64%
∴
A = 32%
Explanation:
The island biogeography model explains
A. the amount of water that surrounds an island
B. the effect the mainland has on the surrounding islands
C. factors affecting the number of different species in a region
D. geographical features of an island
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Complete the following chart with the speed, wavelength, or frequency of sound waves in different mediums.
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Answer:
Explanation:
100m
500m
2500m
see attached...thank you
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When energy is lost in energy transformations, this energy is usually lost as _____.
A: Cooling
B: Heat
C: Ice
D: Power
Answers
Answer:
B
Explanation:
Energy is heat, and when you lose energy, you give out heat.
Answer:
Heat!
Explanation:
Heat is the most dissipated form of energy.
Hope this helps! Let me know if I could help further or if I made any mistakes.
How are gymnosperm seeds and angiosperm seeds different?
Answers
Answer:
angiosperms have seeds that are closed within an ovary, gymnosperms have no flowers or fruits, and have unenclosed seeds on the surface of scales or leaves
Explain how an environment would rebound after a volcanic eruption (include the type of succession and pioneer species)
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Answer: primary succession pioneer species would include Lichens, fungi, bacteria, fireweed, grasses,and alder.
Which of these tendencies applies to highly developed countries' use of minerals?
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Answer:
I think the answer is B (they use mineral resources in proportion to their population size.)
Which statement contains inaccurate information about stem cells?
Stem cells are undifferentiated.
Stem cells are specialized.
Stem cells can make more cells of the same type through cell division (potentially indefinitely).
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Answer:
The incorrect statement is stem cells are specialized.
Explanation:
By their nature stems cells are unspecialized because they are undifferentiated. This means that they have not yet been assigned a specific role in the body.
How does contour plowing in farming help to prevent pollution?
Answers
Answer:
Contour plowing is used to reduce erosion and sediment pollution. Contour plowing is used to treat pathogens in livestock waste. Contour plowing is used to make insecticides less toxic
Explanation:
Contour plowing is used to reduce erosion and sediment pollution. Contour plowing is used to treat pathogens in livestock waste. Contour plowing is used to make insecticides less toxic
Contour plowing is a farming practice which is used to reduce erosion and sediment pollution. Contour plowing is used to treat pathogens in the livestock waste.
What is Contour plowing?Contour plowing is a farming practice which creates contour lines in the soil, these lines are placed perpendicular to the slope of the line, for this reason, they are a method which is used to prevent soil erosion and retain water in soil.
Contour farming is used to reduce erosion and sediment pollution because it helps in retaining soil moisture and water content. Contour lines favor infiltration of rainwater as water run-off is stopped through this.
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which of the following are characteristics shared by all living things, a fact that supports the conclusion of common ancestry?
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Similarities between biological molecules, like structural homologies, can reveal shared evolutionary ancestry. At their most fundamental level, all living things share: similar genetic makeup (DNA) genetic sequences that are identical or very close.
What does ancestry mean?Ancestry is the term used to describe a person's ethnic background , descent, "roots," or ancestry, as well as the place of the person's birth, the birthplace of their parents, or the birthplace of their ancestors before they immigrated to the United States. Therefore, the phrase "genealogical ancestry" refers to forebears who may be identified in a family tree and pedigree. It is frequently quantified; for instance, if one of your eight great-grandparents belongs to X, you would refer to yourself as "one eighth X."
What does ancestry check for?These tests examine a person's complete genome and a huge number of individual changes (also known as single nucleotide polymorphisms, or SNPs). To assess a person's ethnic heritage, the outcomes are compared to related SNPs in a testing database.
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Penicillin-binding protein 2a, encoded by the medA gene, isn’t affected by beta-lactam antibiotics.
True
False
Answers
Answer:
The correct answer is - false.
Explanation:
Penicillin-binding protein 2a or PBPs are protein produced by bacteria that binds with the β-lactam antibiotics such as penicillin. They play role in the cell wall synthesis of bacteria by producing peptidoglycan by catalyzing the reaction.
β-Lactam antibiotics bind with the PBPs and cause the disruption to peptidoglycan cross-linking in the biosynthesis of the cell wall and ultimately lysis of bacteria takes place and cell death.
Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music
What can Carmen do to make her experiment more reliable?
A. add another variable to test
B. repeat the experiment several times
C. decrease the amount of time the test subjects are exposed to the music
D. putting each test subject in a different location while they listen to the music
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Some people choose not to get vaccinated because they believe that vaccinations can cause disease. What would be the best evidence to oppose this argument? Vaccines can suppress the immune system to allow for better organ transplants. There is a greater chance of contracting dangerous diseases if you are not vaccinated. The vaccines can help build immunity to many different pathogens. Everyone is capable of receiving vaccines, so we should all do our part to eradicate disease.
Answers
Answer:
Vaccines can help build immunity to many different pathogens
Explanation:
The first one has nothing to do with anything.
The second one is correct but does not provide as much evidence.
The third one has facts and evidence to support pr vaccine.
The fourth one is an opinionated response.
Which statement is supported by this cladogram?
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Answer:
Ans.
The given diagram represents a cladogram, which is used to show evolutionary relationships between various organisms or species.
The intersection points between the lines show the common ancestors, which evolved into different organisms at the end of the branches, as A, B, C, D.
The first branch end (A) represents that most primitive organism, while the last branch end (D) represents the most recent organism.
Thus, the correct answer is option). 'organism A is the most primitive organism.'
Explanation:
HELP PLEASE Name any two of the major types of chemical substances that are broken down in chemical digestion. For each substance, name an enzyme that breaks them down and what final product is actually absorbed by the body for use or storage.
Answers
Two major types of chemical substances that are broken down in chemical digestion are carbohydrates and proteins. Carbohydrates are broken down by the enzyme amylase, which is found in saliva and the pancreas.
Proteins are broken down by a group of enzymes called proteases, which are produced by the stomach and pancreas. Proteases break down proteins into smaller peptides and individual amino acids, which can be absorbed by the body and used to build new proteins or as a source of energy. Overall, the breakdown of carbohydrates and proteins in chemical digestion is crucial for the body to obtain the nutrients it needs for energy, growth, and repair. Amylase breaks down complex carbohydrates into simpler sugars, such as glucose and fructose, which can be absorbed by the body and used for energy or stored as glycogen in the liver and muscles.
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Which is NOT a heat transfer process? Radiation Conduction Convection Rotation
Answers
Answer:
Rotation
Explanation: Rotation is the process in which the object moves in a circular pattern this does not usually heat up that object
Hope this helps :)
Answer:
D: Rotation
Explanation:
Rotation refers to the process of an object going round and round in circles with no actual destination.
that is it goes in circles to stop any where
A large section of the lower troposphere with uniform temperature and humidity is called _______.
A. a hurricane
B. a hemisphere
C. a pressure gradient
D. an air mass
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Answer:
D. an air mass
Explanation:
Histoplasmosis is a disease of
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Answer:
Histoplasmosis is an infection caused by a fungus called Histoplasma. The fungus lives in the environment, particularly in soil that contains large amounts of bird or bat droppings.Got it from the internet.
Plz help me well mark brainliest if correct!!....
Answers
Answer:
The answer is D (last one)
Explanation:
Your organisms must be from four different continents, cannot be humans, pets, plants, bugs or bacteria and must be larger than a house cat.
Find the following:
Scientific Name
Habitat
Niche
Two Ecological Relationships that it has (mutualism, commensalism, parasitism
What type of feeding does it do
Is it a Herbivore, Detritovore, Decomposer, Carnivore, Omnivore
Where does it fit in the Carbon and Nitrogen cycles
Any limiting factors that might exist in its habitat
Is it a Producer or Consumer
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The organism that I chose is the African Elephant and the ecological relationships it has with other organisms are mutualism and parasite-host.
What are ecological relationships?The interactions between and among organisms within their surroundings are referred to as ecological relationships.
Predation, competition, commensalism, parasitism, and mutualism are the five ecological interactions. These connections describe how specific species interact as they compete for the same niche.
Considering my chosen organism and its ecological relationships:
Scientific Name: African Elephant (Loxodonta africana)Habitat: Savannas, forests, and deserts of AfricaNiche: As a large herbivore, African elephants play an important role in shaping their ecosystems by maintaining open areas and creating pathways that allow for other animals to move and feed.Two Ecological Relationships: Mutualism - African elephants disperse seeds in their dung which helps with plant reproduction; Parasitism - Elephants are host to ticks and other parasites which can negatively affect their health.Feeding: Herbivore - African elephants feed on a variety of plant species, including grasses, leaves, bark, and fruits.Carbon and Nitrogen Cycles: As a herbivore, African elephants consume plants that store carbon and nitrogen. Their dung and urine help to replenish soil nutrients, which benefits plant growth.Limiting Factors: Poaching, habitat destruction, and conflicts with humans are significant threats to African elephant populations.Producer or Consumer: Consumer - African elephants are primary consumers as they consume plants.Learn more about ecological relationships at: https://brainly.com/question/449778
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Can the ecosystem survive without light? Why or why not?
Answers
Answer:
No
Explanation:
Because plants prepare their food form photosynthesis and sun light is basic element for that process to take place. So without sunkight the plants would die and due to their extinction herbivorous animals would die eventually and then the other animals depending upon herbivorous will also die due dissapearence of their food
Explain why rainforests are important to Western medicine.
Which of the three substances has the greatest porosity?
a.
gravel
b.
sand
c.
silt
d.
all are equal
Answers
Rainforests are important to Western medicine because they are home to a vast array of plant and animal species that have been used for centuries in traditional medicine by indigenous people. Many of these species contain compounds that have been found to have therapeutic properties and have been developed into drugs and treatments for various medical conditions, including cancer, malaria, and hypertension.
B. Sand typically has the greatest porosity, meaning it has the most open spaces or pores compared to gravel and silt. This allows water and air to move more easily through the substance.
2. ______ are made up of at least one cell. Which word best fits in the blank? * 1 point A. Animals B. All living things C. Plants D. Atoms
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Living things are made up of at least one cell which is option B.
Living things explained.
Living things are organisms that have one or more cells and have life i.e they can breathe.
Living things are organisms that can perform some essential processes and has the ability to maintain their internal environment.
Some essential processes perform by living things are metabolism, respiration and so on.
The mature characteristics of living things are movement, respiration, nutrition, irritabilility, growth, excretiuon, reproduction and death.
Examples of living things are plants and animals.
Therefore, living things are composed of one or more cells and have a complex organization that help them to maintain their internal environment.
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The diagram shows a simple lipid
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Answer:
the answer is saturated
Explanation:
Feedback interactions with the human bidy are important because
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Feedback interactions with the human body are essential because they play a crucial role in maintaining homeostasis, which refers to the body's ability to maintain a stable internal environment despite external changes.
These feedback mechanisms allow the body to detect and respond to deviations from normal conditions, ensuring that physiological processes remain balanced.
In the human body, feedback interactions typically involve a control system consisting of a sensor, a control center, and an effector. The sensor detects changes in the body's internal environment, such as temperature or hormone levels. The control center receives and processes the information from the sensor, determining the appropriate response. The effector then carries out the response, restoring or adjusting the body's conditions back to the desired set point.
Through feedback interactions, the body can regulate various processes, including body temperature, blood glucose levels, pH balance, heart rate, and hormone secretion, among others. These mechanisms enable the body to respond to internal and external stimuli, ensuring optimal functioning and promoting health.
Without feedback interactions, the body would be unable to detect and correct deviations, leading to imbalances and potentially harmful consequences. Feedback mechanisms are vital for maintaining the stability and overall well-being of the human body.
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Discrimination is a negative _______, whereas prejudice is a negative _______
A) attitude; behavior
B) behavior; attitude
C) belief; action
D) behavior; action
Answers
Explanation:
jpopwgtxfp meet compare the following using symbols greater than and smaller than than and = a) 4/7 and 3/8
Answer:
A) Discrimination is a negative behavior, whereas prejudice is a negative attitude.
What is structure 3, and how does it help sustain life?
A.
Structure 3 is a mitochondrion, which is the site of cellular respiration.
B.
Structure 3 is a chloroplast, which is the site of photosynthesis.
C.
Structure 3 is the nucleus, which is the control center of the cell.
D.
Structure 3 is the cell wall, which gives the cell structural support.
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is there no picture with it?
Explanation:
What are Bald eagle homologous structures
Answers
The wing of a bald eagle is homologous to the wing of a penguin. Homologous structures are structures that are of similar evolutionary origin.
How do we explain?Homologous structures are described as anatomical features found in different species that have a common evolutionary origin. These structures may have different functions in different organisms, but they share a similar underlying structure and can be traced back to a common ancestor.
The wing of a bald eagle and the wing of a penguin are considered homologous structures because they both evolved from a common ancestral structure, even though they serve different purposes which is flight in the case of the bald eagle and swimming in the case of the penguin.
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Refer to the diagram provided. This cell can conduct cellular respiration. Name a product of cellular respiration that is used as a reactant in photosynthesis? (SC.912. L.18.9)
Answers
Answer:
Water or carbon dioxide
Explanation:
Cellular Respiration:
glucose + oxygen --> water + carbon dioxide
Photosynthesis:
water + carbon dioxide --> glucose + oxygen