A student wants to know what effect temperature will have on the germination rate of radish seeds. To test this, she obtains 3 petri dishes and 60 radish seeds. She places 20 seeds in the first petri dish and stores it at room temperature. She places another 20 seeds in the second dish and places it in the freezer. She places 20 seeds in the third petri dish and places the dish in an incubator. Over the next two weeks, she waters the dishes daily and records the number of seeds germinate. At the end of the experiment she calculates the germination rate for the seeds at each temperature.
Hypothesis: ____________________________
Experimental Group: ____________________________
Control Group: ____________________________
Manipulated Variable (IV): ____________________________
Responding Variable (DV): ____________________________
Constants: ____________________________
Answer:
Hypothesis: IF the temperature is high, THEN the germination rate of radish seeds will increase.
Experimental Group: 20 Seeds in petri-dishes placed in the freezer and incubator each
Control Group: 20 seeds stored at room temperature
Manipulated Variable (IV): TEMPERATURE
Responding Variable (DV): GERMINATION RATE
Constants: Amount of water, same amount of time (2 weeks)
Explanation:
- The hypothesis is a testable explanation given to an observed problem. A possible hypothesis is IF the temperature is high, THEN the germination rate of radish seeds will increase.
- Independent or manipulated variable is the variable that is changed or manipulated variable in an experiment. The TEMPERATURE is the independent variable in this case.
- Dependent or responding variable is the variable that is measured in an experiment. In this case, the dependent variable is the GERMINATION RATE
- The experimental group is the group that receives the experimental treatment. In this case, the experimental group is the 20 Seeds in petri-dishes placed in the freezer and incubator each.
- The control group is the group that does not receive the experimental group. In this case, the control group is the 20 seeds stored or placed at room temperature.
- Constants are the variables that are kept unchanged throughout the experiment. In this case, the constants are Amount of water, same amount of time (2 weeks)
Answer:
GIVE ME MY POINTS NOW
Explanation:
Which of these is a result of increased biodiversity in an ecosystem?
O A. Decreased ecosystem resilience
B. Increased ecosystem stability
C. Increased artificial selection
D. Decreased species richness
In the negative feedback mechanism for hypotension, decreased urine volume would:
Question 33 options:
increase blood pressure
decrease blood pressure
have no effect on blood pressure
In the negative feedback mechanism for hypertension, increased urine volume would:
Question 39 options:
have no effect on blood pressure
increase blood pressure
decrease blood pressure
Your Leg is made up of:
A. many cells
B.one cell
C.Eubacteria
D.an organ
Someone help please
Answer:
a
Explanation:
difference between a molecule and a cell.
Answer:A cell is made of molecules and a molecule is made of atoms. That's the simplest way of putting it. More complicated is that a cell is made up of macromolecules, such as proteins, lipids , etc. A molecule is a particular configuration of atoms.
Explanation:
it called google
What are the two types of biological interactions?
Answer:
Intraspecific interactions, where they are the same species, or interspecific interactions, where they are from different species.
Answer:
There are two types of biological interactions, one is harmful interactions and one is helpful interactions.
Explanation:
When would you expect the smallest change between high and low tides?
Answer:
During a neap tide.
Explanation:
Neap tides are when the tidal movement is affected in the least magnitude by the moon.. This happens just after the moon is in its first and third quarter. So roughly every fornight
The elements carbon, hydrogen, oxygen, and nitrogen make up which percentage of the
human body?
O 50%
O 69%
78%
O 96%
Question 6
4 pts
Explain the contribution of antigenic determinant in false negative and false positive test
Answer:
The contribution of the antigenic determinant is given below:
Explanation:
Antigenic determinant or epitope is the part of the antigen that is recognized by the immune cells or antibodies such as the B- cells by binding to these cells and evokes the response in the host. The antibodies bind to the epitope segments only not to the entire antigen protein.
A false-positive test is a test where the result suggests that an individual has a specific condition but in reality not having such condition. opposite in the false-negative So, the antigenic determinant binds to the specific antibodies and shows wide significance to reduce the false-negative or false-positive.
Humans, plants and mushrooms are all alive. What do these organisms have in common?
Answer:
They are all made of cells, grow, are living, and reproduce.
Explanation:
its true
scientists determined that organisms of the genus spinoloricus we eukaryotes and not prokaryotes because spinoloricus cells have --
A. flagella
B. hereditary material
C. Cell walls
D. Nuclear Membranes
Scientists determined that organisms of the genus spinoloricus we eukaryotes and not prokaryotes because spinoloricus cells have cell walls. Thus, option C is correct.
What are the difference between eukaryotes and prokaryotes?Eukaryotes are distinguished from prokaryotes in that they organelles enclosed within a nuclear membrane. The organisms of spinoloricus are radically different from other known eukaryones in that they lack mitochondria and are able to exist in the absence of oxygen. However, their genetic material is contained within a nuclear membrane and they are therefore eukaryotes rather than prokaryotes.
Taking into consideration the main characteristic of each group, prokaryote, and eukaryote. In the first case, we have that it laks nucleus and has no sexual reproduction, meanwhile, the eukaryote has organelles and has sexual reproduction. Taking this into account we can proceed to answer each part.
Therefore, Scientists determined that organisms of the genus spinoloricus we eukaryotes and not prokaryotes because spinoloricus cells have cell walls. Thus, option C is correct.
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PLS ANSWER FAST! Which of these descriptions best contrasts safety knowledge for cows and horses? Horses have a definite flight zone, whereas cows do not Cows will startle at sudden movement or noise. but horses do not. Cows have 360-degree vision, but horses do not Cows have a definite flight zone, whereas horses do not.
Answer:
the descriptions best contrasts safety knowledge for cows and horses is the description that says "Cows have 360-degree vision, but horses do not Cows have a definite flight zone, whereas horses do not"
Explanation:
For horses, the size of the flight zone depends primarily on the tameness or familiarity of the horse with the handler. With frequent handling, the flight zone decreases in size and may even disappear. A horse that is approached head-on has a larger flight zone than if it is approached from the side.
When moving groups of cattle in open spaces. The flight zone is the animal's personal space, and the size of the flight zone is determined by the wildness or tameness of the animal. Completely tame animals have no flight zone and people can touch them.
Answer:
It's A
Explanation:
What does the Big Bang Theory explain about the current size of the universe?
Answer:
b
Explanation:
Answer:
The formation of the Universe.
Explanation:
A P E X
Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?
A.By increasing the age of the cows that are bred
B.By choosing cows that are high milk producers
C.By limiting the number of offspring per cow
D.By choosing cows that can produce milk after eating the most food
Answer:
I would say B.By choosing cows that are high milk producers
this is just my guess tho
So, the answer is B. Your welcome.
Define “isotope” using mass number, atomic number, number of protons, neutrons and electrons. (PLEASE HURRY!)
Isotopes have different mass numbers due to different number of neutrons but same atomic number due to same number of electrons and protons.
What are isotopes?
Isotopes are defined as substances having same number of protons but different number of neutrons.Number of protons is characteristic for determining position of elements in the periodic table.
Since,all isotopes have the same number of protons and hence have same position.They have similar chemical properties as they have same number of electrons.
They find applications in the field of nuclear medicine and oil and gas research . There are 2 types of isotopes : stable and unstable
Unstable isotopes are radioactive and are called as radioisotopes.Some of these isotopes are man -made and hence also called as artificial isotopes.Every element has an isotope which is either man-made or natural .
Many properties of isotopes depend on mass which is measured in atomic mass unit. The difference in actual mass and mass number is called mass defect.
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Chrysanthemum pests and diseases include leaf miners, _____, powdery mildew and leaf spot
Answer:
aphids
Explanation:
it just is trust me
How is sediment formed?
A. Loose material is cemented by pressure.
B. Chemical changes cause sediment to compact together.
C. Molten rock cools above Earth’s surface.
D. Weathering breaks down rock and other material.
Thank you for whoever helps :)
Answer: D. Weathering breaks down rock and other material
Explanation:
Because weathering/erosion cause rocks to break down into tiny sediments over time
True or False: Larger pigments will travel a greater distance on filter paper than smaller pigments.
Answer:
true true true true
true true
Answer:
I think the answer is true
Explanation:
A pigment that is the most soluble will travel the greatest distance and a pigment that is less soluble will move a shorter distance.
Which of the following groups could be classified as an ecosystem?
A)The total of all plants and algae populations in a pond
B)The biotic and abiotic factors interacting in a pond
C)The fungi, bacteria, and animals in a pond
D)The light, temperature, and minerals in a pond
Answer:
The fungi, bacteria, and animals in a pond
Explanation:
Hope this helps :)
Answer:
C) the fungi, bacteria, and animals in a pond
Explanation: Ecosystem: a biological community of interacting organisms and their physical environment:
Which adaptation helps the arctic fox survive by allowing it to sneak up on its prey undetected?
a bushy tall
b large litter size o ability to eat a wide variety of foods
c white winter coat and brown summer coat
Answer:
c - white winter coat and brown summer coat
Explanation:
The white winter coat blends in with the snow during the winter. Similarly, the coat changes to brown once it is summer so that the white coat doesn't stick out.
An atom has a mass number of 36 and an atomic number of 16, how many
neutrons does the atom have?
Answer:
36
Explanation:
SSESSMENT QUESTIONS
? Which of the following is the best description of the process shown in the image below?
Ada
co
Output
CHO
Coger and share inouts the carbon dicede and glucose are outouts.
Bercer carbon diode and light are nous and glucoses the aut
coded here is leger and glucose are tots
Image attached
Answer Options
A. Water and oxygen plus light produce carbon dioxide and glucose.
B. Water, oxygen and carbon dioxide plus light produce glucose.
C. Water and carbon dioxide plus light produce oxygen and glucose.
D. Glucose and oxygen plus light produce carbon dioxide and water.
Answer:
C. Water and carbon dioxide plus light produce oxygen and glucose.
Explanation:
The image shown shows a chloroplast, with light, CO2 and water producing C6H12O6 and oxygen. This is the process of photosynthesis, where green plants make sugar from carbon dioxide and water using the energy in sunlight.
Answer:
C.
Explanation:
Answer on gizmos
HELPPP PLEASE!! i need this answered asap pleaseee
Answer:
D.Uses oxegin for photosynthesis
Explanation:
Plants use CO2 (carbon dioxide) for photosynthesis
process associated with moving carbons from glucose to mitochondion
Answer:
Glucose passes through a series of catabolic reactions in the process of cellular respiration. First, glucose is split in the cytoplasm in the process of glycolysis. The resulting end-productsmove into the mitochondria and go through a preparatory step to the Krebs cycle, and finally to the electron transport system.
What is the primary use of the sugars that the algae produce?
Which option gives two examples of clastic sedimentary rock? a. coquina and shale b. limestone and sandstone c. coquina and limestone d. shale and sandstone
I believe the answer is Shale and Sandstone.
Answer:
It is d. Shale and Sandstone
Explanation:
Because two examples of clastic sedimentary rock are Shale and Sandstone "I know because I love science"
2. What types of molecules are used for energy?
3. What is most commonly used?
(U.S.)
Answer:
Explanation:
Biological molecules The food we eat – our diet – is made up of different biological molecules which give us energy and contain chemicals we need to grow and repair ourselves and help our cells function in our body.
If you move farther away from Earth, does it have the same amount of
gravitational force acting on you or does it change?
Answer:
The strength of the force is inversely proportional to the distance squared. The farther away an object is, the weaker the force; the closer, the stronger.
In the food web below what organisms does organism A eat
Answer:
hop this hepl
Explanation:
In your own words what are the definitions of:
Geological Oceanography
Physical Oceanography
Chemical Oceanography
Biological Oceanography
Answer: Oceanography is the study of all aspects of the ocean. Oceanography covers a wide range of topics, from marine life and ecosystems to currents and waves, the movement of sediments, and seafloor geology Geological oceanography is the study of Earth beneath the oceans.
Physical oceanography is the study of physical conditions and physical processes within the ocean, especially the motions and physical properties of ocean waters. Physical oceanography is one of several sub-domains into which oceanography is divided. Others include biological, chemical and geological oceanography.
Chemical oceanography is a broad and complex study of the metamorphosis that the chemicals within oceans, living marine organisms, and the ocean floor undergo. The ocean contains a multitude of chemicals; some are natural, and others are man-made. These chemicals enter the sea in a number of ways.
Biological oceanography is a field of study that seeks to understand what controls the distribution and abundance of different types of marine life, and how living organisms influence and interact with processes in the oceans.
P.s Hope it helped ^^