Answer:
The independent variable would be the coffee.
Explanation:
In an experiment, the independent variable is something that is added or changed by the scientist in order to see if there will be a response.
In this case, the memory test score would be the dependent variable (something that changes as a result of a change in the independent variable).
Decaf coffee could be a control group, or a group that is treated the same as the independent variable but without being exposed in order to account for any outside factors.
Finally, the type of cup used would be a constant between the control group (using the decaf coffee) and the experimental group (the group with regular coffee).
Hope this helps!
plzz help Is pollination of a flower the “intention of a pollinator? Why or why not?
Some plants self-pollinate, that is, pollen transfer occurs within the same flower or among the flowers on a single plant, usually because the anthers touch the adjacent stigma. The majority of flowering plants, however, depend on the transfer of pollen from other individuals (cross-pollination).
1. What is a pendulum?
Explain the difference between local extinction and species extinction.
Answer:
local extinction, is the disappearance of a species only from a given area and species extinction is the extinction of a species everywhere
Explanation:
The difference between local extinction and species extinction is local extension refers to when the species extinct from a local area and species extinction refers to the extinction of that is species from all over the Earth.
What is extinction?Extinction is a process by which an animal or any other organism or a thing has completely been destroyed from a place or from all over the Earth.
Extinction of species is becoming a common thing due to the over-exploitation of human activities. Many species extinct and many species are in the stage of extinction.
When a species is extinct in a local area, but it is present in another area, it is called local extinction. When a species extinct from or all over the world. For example, the dodo bird is extinction completely from the earth.
The distinction between local extinction and species extinction is that the former relates to the extinction of a species within a specific geographic region, whilst the latter refers to the extinction of a species globally.
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what does the earliest evidence of life look like in the fossil record
Answer:
Scientists have discovered what they say could be fossils of some of the earliest living organisms on Earth. They are represented by tiny filaments, knobs and tubes in Canadian rocks dated to be up to 4.28 billion years old.
Explanation:
Which region of myosin interacts with actin filaments? A. the head domain B. the rod domain C. the light chains D. the tail domain
Answer:
A. the head domain
Explanation:
The head domain of the myosin interacts with the actin filaments. It binds to an active site on the actin producing an inclination of the myosin head and the hydrolysis of ATP. As a consequence of these changes, the myosin has the necessary energy and is in the right position, ready to move along the actin filament producing the contraction of the muscle.
Stars are made primarily of helium and hydrogen. True False
Answer:
This is false.
Explanation:
Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements. ... Most stars have small amounts of heavier elements like carbon, nitrogen, oxygen and iron, which were created by stars that existed before them.
Answer:
false
Explanation:
A giant ball of gas, primarily hydrogen and helium, which undergoes nuclear fusion
¿Qué se puede agregar a un átomo para hacer que un electrón sin valencia en el átomo se convierta temporalmente en un electrón de valencia? energía masa neutrones electrones
Energía.
Explicación:
Generalmente, los electrones giran continuamente en las capas de los átomos. Si estos electrones se encuentran en las capas más externas de un átomo, se denominan electrones de valencia.
Son necesarios para las reacciones químicas de un átomo en particular con otro, a través de sus pérdidas o compartidas.
En los átomos sin valencia, sus capas más externas no tienen electrones en sus capas más externas, tales átomos son estables.
Sin embargo, si se suministra cierta cantidad de energía a dicho átomo, el electrón gana energía y, por lo tanto, se excita.
Por lo tanto, se mueven de niveles de energía más bajos a niveles de energía más altos, y hacen que el átomo sin valencia se convierta en valencia temporalmente, a medida que se mueven hacia la capa más externa.
Answer:
Energy.
Explanation:
Generally, electrons revolves continuously in the shells of atoms.if these electrons are located in the outer most shells of an atom,they are refereed to as the Valence electrons.
They are needed for chemical reactions of a particular atom with another,through their loses or sharing.
In Non -valence atoms their outermost shells do not have electrons at their outermost shells,such atoms are stable.
However, if certain quantity of energy is supplied to such atom, the electron gains energy and therefore becomes excited.
They therefore move from lower energy levels to higher energy levels,and makes the non- valence atom becomes valence temporarily, as they move into the outermost shell.
Match the following organelle with below mention activities.
a. drug detoxification :________
b. catalase :________
c. cytochrome P-450 :________
d. glycosyl transferases :________
e. acid hydrolases :________
f. turgor pressure :________
g. N-linked glycosylation :________
1. Rough endoplasmic
2. Reticulum
3. Peroxisomes
4. Plant vacuole
5. Lysosome
6. Smooth
7. Endoplasmic
8. Reticulum
9. Mitochondria
10. Golgi
a) Drug detoxification ---- SMOOTH ENDOPLASMIC RETICULUM
b) Catalase ---- PEROXISOMES
c) Cytochrome p-450 ----- MITOCHONDRIA AND ENDOPLASMIC RETICULUM
d) Glycosyl Transferases ---- GOLGI APPARATUS SBD ENDOPLASMIC RETICULUM
e) Acid hydrolases ---- LYSOSOMES
f) Turgor pressure ---- PLANT VACOULE
g) N-linked glycosylation ----ENDOPLASMIC RETICULUM
the gross domestic product of the united states in 2009 was 14,280,000,000,000. How much in dollars was produced per person?
Answer:
46,251 $
Explanation:
14,280,000,000,000÷308,745,538
take the total gdp and divide that by population size
Is umbrellaology a science?
Answer: umbrellaology is not science
Explanation:hope I helped :)
Rock layers are correlated if they both contain the same _____?
Answer:
Rock layers are correlated if they both contain the same fossils.
Explanation:
Relate the length of time it takes for light from stars to reach Earth to distances in space.
Answer:
The time it takes for light from stars to reach us is the distance to the star divided by this speed
Explanation:
light travels at 300,000 kilometers per second or 186,000 per second. The nearest star to us is the sun and it takes about 8.3 minutes for its light to reach us here on Earth
Lions and cheetahs prey on wildebeests that graze in the grasslands of the African savanna. What likely effect would increased rainfall over several rainy seasons have on the populations of wildebeests, lions, and cheetahs?
This question is incomplete because the options are missing; here is the complete question:
Lions and cheetahs prey on wildebeests that graze in the grasslands of the African savanna. What likely effect would increased rainfall over several rainy seasons have on the populations of wildebeests, lions, and cheetahs?
A. All three populations would increase.
B. The wildebeest population would decrease, and the lion and cheetah populations would increase.
C. The wildebeest population would increase, and the lion and cheetah populations would decrease.
D. All three populations would decrease.
The answer to this question is A. All three populations would increase
Explanation:
Grass, wildebeests, lions, and cheetahs are part of the same food chain and due to this a change in grasses due to rainfall will affect the other species. In this context, an increase in the rainfall is likely to increase the availability of grass because grasses thrive and develop better with more rainfall. This change would cause the population of wildebeests to increase due to an increase in the availability of food. At the same time, it is likely cheetahs and lions increase because similar to wildebeest these species will have more food available, which makes it easier to survive and reproduce. This means in this situation the three populations would increase.
Answer:
All three populations would increase.
Explanation:
What is the great difference between male and female?
Answer:
Men are, in general, more muscular than women. Women are just over half as strong as men in their upper bodies, and about two-thirds as strong in their lower bodies
what are the five characteristics of life?
A student conducts an experiment by placing a wooden stick in a cup of sugar solution. Over the next few weeks, sugar crystals form on the stick and increase in size. The student concludes that the resulting crystals must be alive because they grow. Rock candy, which is a collection of large sugar crystals that have crystallized around a wooden stick from a sugar solution. 4. What is wrong with the student’s conclusion, and how can it be corrected?
Answer:
In order to be alive, there must be cell(s) present. Since sugar does not contain cells, it is not alive.
Explanation:
In order to be alive there should be cells gift and given that sugar does now no longer incorporate cells it isn't alive.
What is supersaturated solution?A supersaturated solution is unstable—it incorporates greater solute (on this case, sugar) than can live in solution .
In order the temperature decreases, the sugar comes out of the answer, forming crystals. The decrease the temperature, the greater molecules be a part of the sugar crystals, and this is how rock sweet is created.
Thus it is well explained.
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Which organelle is paired properly with its function?
Answer:
Chloroplasts
Explanation:
Write Your Own Questions
Think about the relationship between each word pair
below. Then write a question about the first term that
uses the second term as the answer. For the pair
organism, cell, the question could be "What is the
basic building block of all organisms?" Answer: the cell
4. evolution, adaptation
5. observation, data
6. DNA, gene
Answer:
evolution, adaptation :Question: Which process in evolution makes organisms able to survive in their habitat?
Answer: Adaptation
observation, data :Question: What is an outcome of observation generally called that enables to test hypotheses and theories?
Answer: Data
DNA, geneQuestion: What is a sequence of nucleotides in DNA called?
Answer: Gene
Houses white blood cells (lymphocytes) involved in immunity. Picks up fluid leaked from blood vessels and returns to blood. Disposes of debris in the lymphatic system.
Answer: I think this should be the completed question.
picks up fluid leaked from blood vessels and returns it to blood. disposes of debris in the lymphatic stream. houses white blood cells (lymphocytes) involved in immunity. the immune response mounts the attach against foreign substances within the body.
The correct answer is LYMPHATIC SYSTEM
Explanation:
It is lymphatic system because Lymphatic system is a system that consists of vessels, cells, lymphoid organs which include bone marrow and thymus which form lymphocytes, cells that helps in body immunity or defence against pathogens and they carries excess fluid from the blood stream, filtering and cleansing the body front pathogens,and eliminating nitrogenous wastes and also the regulate acid base electrolytes in the body.
The bacterial flagellum moves _______. Multiple Choice by rotation that is powered by ATP by rotation that is powered by the proton motive force in a wave-like fashion that is powered by ATP in a wave-like fashion that is powered by the proton motive force in a wave-like fashion that is powered by enzymes
Answer:by rotation that is powered by the motive force
Explanation:
The ____ method would be the best to forecast weather conditions that will occur exactly one year from today
The climatology method would be the best to forecast weather conditions that will occur exactly one year from today.
What do you mean by climatology?Climatology is the study of the atmosphere and weather patterns over time. This field of science focuses on recording and analyzing weather patterns throughout the world and understanding the atmospheric conditions that cause them.
Moreover, it is important since it helps determine future climate expectations. Through the use of latitude, one can determine the likelihood of snow and hail reaching the surface. You can also be able to identify the thermal energy.
These elements are solar radiation, temperature, humidity, precipitation (type, frequency, and amount), atmospheric pressure, and wind (speed and direction).
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why is the balance in each facet of health and well being important?
Answer:
Facet in health is well being its that a physical health and mental health.
Explanation:
Health is well being that important is to contributes the thought weight management, exercise and maintain the blood pressure.
Health is well being important process to quality of life and affects to the others, its a complex interaction to the quality of life.Well being process is to maintain the dimensions of the well being:- emotional, physical, social, spiritual, environmental.Emotional is to the ability to the love and achieve the sense of life, these process to ability to feel and express to the human emotions,it is a dynamic frequently with being emotional.Physical is the regular checkup process to the disease checkup and provide the proper nutrients and quality of enjoyment.Social is to the includes to the respect of other and yourself to the build the community contributing interact to the global community demands and human personal role.Spiritual is that perform the high level of faith and hope to the community commitment to the provide meaning and purpose sense.Environmental is the effect to the physical environment to the human and maintaining the harm environment.Does a prokaryotic cell or a eukaryotic cell seem more simple? Explain our answer.
Answer:
prokaryotic
Explanation:
I think that because since it doesn't have a nucleus or as many organelles as eukaryotic. They are smaller in size and don't have membrane bound structures.
A microscope that is calibrated this way will maintain the specimen in focus when the objective lens is rotated.
● Pointer
● C-mount
●fine focus
●Parfocal
Answer:
The correct option is;
Parfocal
Explanation:
A perfocal lens is one that when in use, the object remains in focus when the objective lens is rotated to change the magnification power of the microscope. That is the when the magnification is adjusted, the objectives remains in focus. The use of the parfocal lens however results in a small but insignificant amount of error in the focus.
13. Your dog's dish holds 0.25 liters. You have about 300 milliliters of water. Will all the
water fit in the bowl?
Plants store excess sugars as
known as cellulose?
Answer:
TRUE
Explanation:
What is the difference between a community and a population?
Answer:
A population is a group of one species capable of inner breading, while a community consists of many species.
Explanation:
Answer:
D) A population has only one species, while a community has many species.
Explanation:
Does anyone know this it’s a true or false question
Answer:
the answer to your question is true
Is an apple that has been picked alive?
Answer:
After apples are picked, they are still alive – they continue to carry out the chemical processes of a living plant, more or less, as they take in oxygen, create energy, and get closer and closer to ripeness.
The statement, "Since every insect I have examined so far has six legs, I conclude that all insects must have six legs" is an example of
Answer:
This is inductive reasoning
Explanation:
Because it involves drawing a general conclusion from a set of specific observations, which in this case are the set of insects legs it also explains widening specific premises out into broader generalizations.