Answer and Explanation:
1. Hypothesis: The more sunflower seeds the students get, the better they will do on a quiz.
2. Dependent Variable: Responding variable refers to the dependant variable, which response depends on any change in the independent variable. A change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. In the exposed example, the dependent variable is the response of each group to sunflowers seeds expressed as their grades on quizzes.
3. Independent Variable: number of sunflower seeds. Manipulated variable refers to all the variables in an experiment that provoke a response in another variable. They are also known as independent variables. The researcher can change these variables to see what changes it implies in an object, process, trait, or anything that depends on them. In the exposed example, the researcher manipulates the number of sunflower seeds promised to each group.
4. Constant Control Group: Group 1, which does not receive any sunflower seeds. The election of a control group is essential in an experiment. Its principal purpose is to allow the discrimination of the results obtained by the treatment in the study, in this case, the provision of sunflower seeds, from the results that might be a consequence of other factors. The control group must be selected from the same population of the treatment group. All groups must be similar in every variable that might influence the results, except for the study treatment
5. Experimental Group: Groups 2 and 3, that received different amounts of seeds.
PLEASE ANSWER ASAP!!!
Answer:
x is the independent variable
y is the dependent variable
decrease is deer population per month
23.8333... = 23.83
The 5' end of a DNA molecule can be chemically distinguished from the 3' end because there is a(n) __________ group at the 5' end and a(n) __________ group at the 3' end.
Answer:
The words which complete the two spaces are:
free hydroxyl or phosphate and free hydroxylExplanation:
So the complete sentence will read as follows:
The 5' end of a DNA molecule can be chemically distinguished from the 3' end because there is a free hydroxyl or phosphate group at the 5' end and a free hydroxyl group at the 3' end.
Cheers!
Molecules of a shark
I have a question are you asking what are the molecules of a shark or something
Question
Osmosis differs from diffusion mainly in that:
A. In Osmosis, the water moves against the concentration
gradient.
B. In Diffusion, the water moves down the concentration
gradient.
• C. In Diffusion, the water moves against the concentration
gradient
D. In Osmosis, the water moves down the concentration
gradient,
d
D. In Osmosis, the water moves down the concentration
gradient,
Osmosis differs from diffusion mainly in that in Osmosis, the water moves down the concentration gradient.
What is concentration gradient?“A concentration gradient occurs when the concentration of particles is higher in one area than another.”What is diffusion?The movement of molecules (solutes as well as solvent) from its higher concentration to its lower concentration (down the concentration gradient) is known as diffusion.“The movement of molecules in diffusion is said to be 'down' or 'up' the concentration gradient.”It is responsible for the movement of molecules into and out of the cell.What is osmosis?The movement of solvent/ water molecules from its higher concentration to its lower concentration through a semipermeable membrane (membrane that allow only specific molecules to pass through it) is called osmosis.The water moves till an equilibrium in maintained on the both side of membrane.Hence, the correct option is: d. In Osmosis, the water moves down the concentration gradient.
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Which of the following is the best example of one
way carbon progresses through the carbon
cycle?
A. Humans take in carbon dioxide and give off
carbon dioxide through respiration.
B. Marine organisms transform carbohydrates from
the atmosphere into carbon gas.
C. Fungi take in carbohydrates as nutrients and
release oxygen into the atmosphere.
D. Plants take in carbon dioxide and turn it into
carbohydrates during photosynthesis.
Answer:
D.
Explanation:
Plants take in CO2 and turn into Carbo.
That's the most efficient example
Which biogeochemical cycle does NOT include a
major path in which the substance cycles through
the atmosphere?
A. water cycle
B. carbon cycle
C.nitrogen cycle
D. phosphorous cycle
Answer:
C
Explanation:
Phosphorous cycle does NOT include a major path in which the substance cycles through the atmosphere. Therefore, option (D) is correct.
What is Phosphorous cycle?Unlike water, carbon, and nitrogen cycles, the phosphorus cycle does not have a significant atmospheric component. Phosphorus is mainly found in rocks and minerals, and it enters the biotic component of the ecosystem through weathering of these rocks.
Once it enters the biotic component, it cycles through the food chain and eventually returns to the soil or water when organisms die and decompose. While some small amount of phosphorus may become available in the atmosphere due to volcanic eruptions or dust storms, it is not a major pathway for phosphorus cycling. Therefore, option (D) is correct option.
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which part of an investigation is only found in an experimental investigation
Answer:
Experimental
Explanation:
Where is the most accurate place to take the body temperature? Suppose a body is found and its temperature is recorded at 34 degrees Celcius, how long has the body been dead?
Answer:
When the body dies, the organs cease to function and do not produce any more energy, but after death, the body is still hot, that heat is the amount of energy left in the body while it is alive. This amount of energy will be lost gradually, on average, in summer, each hour will decrease from 0.5 to 1 degree C and in winter will decrease from 1 to 1.5 degrees C. The rapid or slow decrease in temperature depends on Body fat or thin, clothing thick or thin, body indoors or outdoors. The order of the cadaver's temperature begins to decrease from the head, face, limbs to the base of the limbs, and finally the armpits, abdomen and episiotomy. To determine the time of death, Scothland security agency has come up with a time formula based on the temperature drop of the cadaver.
Time after death = (37 degrees C - T degrees) / 1.5 degrees C
=(37-34)/1.5=2h
Explanation:
Birds, snakes, lizards, turtles, and crocodiles are all thought to share a common ancestor and several homologous traits. Assuming that this is true, these groups of animals and their common ancestor would represent
Answer:
Monophyletic groups
Explanation:
Animals in monophyletic groups comprises of jaw vertebrates (typically known as a group of gnathostomes). They are monophyletic because all of the descendants of the most recent common ancestor are include in the group. The group can be defined by the shared derived feature such as jaw. This shared derived feature of jaw is known as synapomorphy. This derived feature of jaw is significant since the ancestral state were plesiomorphy ( a jawless condition). Other factor of monophyletic groups include the presences of bone.
Diffusion is the movement of molecules across the cell membrane from
concentration.
O low, high
O high, low
O high, equal
O equal, low
Answer:
o high, low
Explanation:
Diffusion is the movement of a solute from an area of its high concentration to an area of its low concentration
Which of the following is a consumer in the food web shown below? *
berries
robin
kestrel
grass
grasshopper
O all of these
O grasshopper
Ο Ο Ο Ο
Okestrel
O robin
.
what family is the fox in? are foxes and dogs related?
The family fox are in is the canidae. Foxes and dogs are related because they are in the same family, canidae. Also, wolves are in the family canidae.
Hope it helps.
Answer:
foxes are related to dogs so they are in the dog family wolves came before dogs and foxes also came before dogs
just like lions are related to cats the lions came first then domestic cats
Explanation:
the way of life
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2. What are the major hormones and nervous pathways that play a role in primate (including humans) stress reactions?
Answer: Epinephrine (also known as adrenaline) and norepinephrine (also known as noradrenaline)
Explanation:
The hypothalamic-pituitary-adrenal axis (HHA axis) is a complex set of direct influences and feedback interactions between the hypothalamus, the pituitary gland, and the adrenal gland. The fine homeostatic interactions (Homeostasis) between these three organs constitute the HHA axis, an essential part of the neuroendocrine system that controls reactions to stress and regulates various processes in the body such as digestion, the immune system, emotions, sexual behavior and energy metabolism.
Adrenaline (or also epinephrine) is synthesized and stored in the adrenal medulla and released into the systemic circulation. Noradrenaline (or norepinephrine) is synthesized and stored not only in the adrenal medulla, but also in the peripheral sympathetic nerves. Epinephrine, among other things, increases the heart rate. Norepinephrine constricts blood vessels and extends the length of sympathetic nervous system activation.
The autonomic nervous system (ANS) is a control system that acts unconsciously and regulates heart rate, digestion, breathing rate, pupil response, urination and sexual response. It is one of the major neural pathways which has a role in the response to stress and is divided into the sympathetic nervous system (SNS), and the parasympathetic nervous system (PNS). During stress, the SNS contributes to the "fight or flight" response, a physiological response to the perception of harm, attack, or threat to survival. The response begins in the amygdala body, which triggers a neural response in the hypothalamus, the initial response is followed by activation of the pituitary gland and secretion of the hormone ACTH (adrenocorticotropic hormone). The adrenal gland is activated almost simultaneously and releases the neurotransmitter epinephrine. The release of chemical messengers results in the production of the hormone cortisol, which increases blood pressure, blood glucose concentration, and suppresses the immune system. The initial reaction and subsequent responses are initiated in an effort to increase energy, which is achieved by the binding of epinephrine to liver cells and the subsequent release of glucose. In addition, cortisol converts fatty acids into available energy, preparing muscles throughout the body for the reaction. The hormones catecholamines, such as epinephrine or norepinephrine, facilitate immediate physical responses associated with preparation for violent muscular action.
42. Variation which exhibits a wide range from one
extreme to the other is
A. phenotypic variation.
B. discontinuous variation.
C. continuous variation.
D. genotypic variation
Answer:
C. continuous variation.
Explanation:
Variation within organisms refers to how different they are from another. In biology, variation can either be a continuous one or discontinuous.
A continuous variation is a type of variation in which there is a wide range of values from one phenotype/extreme to the other. In other words, there are a lot of values in between the extremes. For example, the human height can range from different degree of shortness to a different degree of tallness. Hence, human height is an example of a trait that exhibit continuous variation.
Therefore, a variation which exhibits a wide range from one extreme to the other is CONTINUOS VARIATION.
What are two categories of natural resources?
which organelle converts cellular polymers into monomers? 1)lysosomes 2)golgibody 3)plastids 3)SER
Answer:
1) lysosomes
Explanation:
because, they involve in intracellular digestion
The Earth's crust is part of which sphere? lithosphere biosphere hydrosphere atmosphere PLS ASAP HELP PLS
Answer: lithosphere
Explanation:
Apart of the earth upper mantle,
The Earth's crust is part of the lithosphere. (Option A) The lithosphere is the rigid outer layer of the Earth that includes the crust and the uppermost portion of the mantle.
What is the lithosphere composed of?It is composed of solid rocks, minerals, and landforms. The lithosphere is distinct from the other Earth's spheres.
The biosphere refers to all living organisms, the hydrosphere includes water in all its forms, and the atmosphere is the layer of gases surrounding the Earth.
The lithosphere functions as a foundation for landforms, provides a habitat for geological processes, and supports the Earth's tectonic plate movements.
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Which of the following regarding internal mammary artery is true?
a) supply the heart
b) arise from the subclavian artery
c) arise from the aorta
Answer:
The correct answer is option b) "arise from the subclavian artery" .
Explanation:
The internal mammary artery, nowadays known as the internal thoracic artery, is one of the most important arteries in the body, since it supplies the anterior chest wall and the breasts with oxygen. The internal mammary artery arise from the subclavian artery, particularly from its proximal part, and it extends up into the musculophrenic and the deep superior epigastric arteries.
(a)
(i)
What are secondary colours of light?
Name the colour that results from the combination of each of
the following pairs of colour of light:
(a)
red and green;
(B)
blue and green;
(Y) red and blue.
Answer:
red and blue= purple red and green= brownish yellow blue and green= cyan
When have you used the skills of observation,
experimentation, or modeling? Describe an example of how you have used this skill.
Answer:
For my school we learned it differently but I don't know if this helps
Observation: I am is crying
Question: Why am I crying
Hypothesis: It had to do with something that I was thinking about
Collect data: Next I realize that those things were bad and I needed to do something about it/find a solution to my emotions
Conclusion: My hypothesis was correct, I was thinking about something.
The first one was observation
The sacond to forth one was experimental
The fifth one was modeling
Mutation can be defined as the addition of genetic variation that increases the hereditary diversity of a population. a. True b. False
True
Hope this helps :)
Deficits in immune system function occur in cancer due to:___________.
a. chemotherapy.
b. cancer cells.
c. cancer metastasis to bone marrow.
d. malnutrition.
Answer:
Cancer cells
Explanation:
Cancer cells secrete substances that suppress the immune system. Bone marrow suppression may be because of invasion of blood-forming cells in the bone marrow, poor nutrition, and chemotherapeutic agents. By contrast, immunotherapy is a method of harnessing the immune system in the treatment of cancer.
True or false Fats are usually of animal origin while oils are usually of plant origin
Answer:
It is TURE
Fats are usually of animal origin while oils are usually of plant origin. Fats and oils function well as energy-storage molecules because they contain carbon.
Where are hormones made?
50 points :D Every person has an ecological footprint. Describe what factors contribute to a person's ecological footprint.
The simplest way to define ecological footprint would be to call it the impact of human activities measured in terms of the area of biologically productive land and water required to produce the goods consumed and to assimilate the wastes generated.
I hope this helps you? I'm not that good at this question!
Glucose molecules provide energy to power the swimming motion of sperm. In this example, the sperm are changing
Answer:
From the energy stored in food substance( glucose) as Chemical energy to the energy of motion,which is Kinetic energy.
Explanation:
The energy is produced in the mitochondria which are packed in the flagellum of the a sperm cells.Thus as the sperms move the these flagella flips back and forth,Energy inform of ATPs are generated from the glucose(chemical energy) during cellular respiration in the mitochondria, this energy is converted to Kinetic energy for motility.
Specifically,ATP production for the sperm cells is initiated by Glycolysis. This is because the environments where it swims to meet the ovum punctuates with in oxygen, besides,Glycolysis can occur with or without oxygen.
Sperm motility is very important to male fertility.
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50 POINTS!!!
You will write your own description of the water cycle. You must begin your description with one of two events.
You must begin with either sublimation or evapotranspiration.
Sublimation is the process in which ice or snow is turned into water vapor.
Evapotranspiration is the process in which water in the soil or in plant leaves is released into the atmosphere.
Your description must contain at least ten sentences. Use the Water Cycle diagram to help you.
Answer:
i would like to choose sublimation process to explain about water cycle.As mentioned, sublimation is the process in which snow melts and water get vaporized. Ice melts and turns into water which flows to the seas and oceans.When the temperature increases during the day time, water gets vaporized.Water vapour begin to move upward.As we know, temperature decreases with the increase in height.Due to which water vapour rises,cools and then changes into tiny water molecules.Those water molecules forms cloud.Then the clouds get heavier and begin to collide with each other.As a result rain fall occurs.
Evapotranspiration has also the same process but the difference is that it involves vaporization of water from some biological factor like plants and physical factor like from soil .
i think its my first longest answer which i answered here.Thank you for the amaizing question. Its simple but most important topic
A student investigating the importance of wavelengths above and below the visible spectrum for photosynthesis sets up an experiment as follows over a 2-month period, all with illumination at 1 meter distance from plants grown with the same soil and watering conditions. ollapse 3 Arabidopsis plants exposed to ultraviolet light (UV) 3 Arabidopsis plants exposed to infrared light (IR) 3 Arabidopsis plants exposed to white light At the end of the experiment, she finds that the IR treated plants are scorched, the UV treated plants have wilted, but the white light-treated plants are growing normally.
Which of the following statements is most likely to be correct?
A) Three plants do not provide sufficient replications to draw a conclusion
B) Wavelength of light is the only variable that has been changed between groups.
C) The wavelength of light does not affect photosynthesis.
D) Infrared light contains more energy than the other wavelengths.
Answer:
The correct answer is : B) Wavelength of light is the only variable that has been changed between groups.
Explanation:
In this three plants in three different conditions shows three different outcomes so their is sufficient replication to draw a conclusion. The wavelength of the light affects the growth of the plant. UV light has very low wavelengths below 400 nm than the photons required similarly Infrared light has higher wavelengths that is low energy light, UV can cause wilting and leaf burn.
So, the wavelengths of the light and growth of plant are related and this experiment only wavelengths of the lights are changed.
Thus, the correct answer is : B) Wavelength of light is the only variable that has been changed between groups.
Answer:
Option B (Wavelength of light is the only variable that has been changed between groups) is most likely to be correctExplanation:
It provides the outcome of the three independent experiment, therefore it has the sufficient replications to draw a conclusions. Thus option a is incorrect.
Here, the different wavelength of light has been provided to the Arabidopsis plants. Thus, option b is correct.
The wavelength of the light affects the photosynthesis in plants because it helps in excitation of the chlorophyll electrons and transfer it to higher energy level in order to prepare food on their own. Ultraviolet light consists smaller wavelength with high energy photons in comparison to the infrared light.
The infrared light refers to the longer wavelength with low energy photons. Therefore, UV light may cause the leaf burn (scorching and wilting).Thus, option D is incorrect.
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How is the biosphere different than the earth as a whole?
Answer:
The biosphere is made up of the parts of Earth where life exists. ... Scientists describe the Earth in terms of spheres. The solid surface layer of the Earth is the lithosphere. The atmosphere is the layer of air that stretches above the lithosphere.
Are there any colonies for which genotype information cannot be determined? If so, which colony or colonies?
Answer:
Please see below
Explanation:
It is colony number 6. The genotypic information cannot be determined in this case since it did not grow on any of the four replica plates with minimal medium and a unique amino acid. Every other colony (1 to 5) did grow a least once on either of the replica plates. So there is no hint given towards colony six's genotype.