Answer:
D) The addition of different substances affects the freezing point of water.
Explanation:
The best answer would be letter D.
The short explanation would be, the other choices only involves the addition of 1 substance (salt or sugar).
The long explanation:
Susie is testing two types of solution: sugar + water and salt + water. This means that she is testing the effect of both. An experiment is done to test certain variables and an addition of a variable that is not being tested is not advisable. But since she intentionally used both solutions, then it is reason enough to assume that she is testing both substances (sugar and salt) so the hypothesis should include both as well.
Answer:
The correct answer is option D) "The addition of different substances affects the freezing point of water".
Explanation:
A hypothesis is defined as a supposition based on evidence that could be confirmed or rejected according to experimental results. In this case, Susie has performed an experiment that involves freezing 3 beakers and recording the temperature and time of freezing. The first beaker contains water, the second water and salt, and the third water and sugar. Since Susie is experimenting with salt and sugar using a water only beaker as control, the most appropriate hypothesis for her experiment is that the addition of different substances affects the freezing point of water. There is no additional information that could make Susie hypothesize how salt and sugar affects the freezing point of water, but the results of her experiment will let her gather the information she needs.
The failure of which body systems can cause an immediate problem
Answer:
Nervous system
Explanation:
Nervous system is the set formed by connections of nerves and organs of the body, with the function of capturing information, messages and other external stimuli, as well as answering them, besides being responsible for commanding the execution of all body movements. , whether they are voluntary or involuntary.
During the summer, some continents become much warmer than the oceans that surround them. Because of this, we can expect
A) hot, dry winds blowing inland, making the continents much warmer.
B) winds heavy with moisture to blow from the oceans across the continents.
C) warm currents flowing along the continents, melting ice and unfreezing docks.
D) cold ocean currents flowing along the continents, form breeding grounds for fish.
It is B ) winds heavy with moisture to blow from the oceans across the continents
Answer:
B) winds heavy with moisture to blow from the oceans across the continents.
Explanation:
In summer, continents are hotter than the surrounding oceans. As a result, moisture laden winds blow from the oceans across the continents, bringing rain.
What were the 4 scenarios of griffiths experiment?
Griffith's experiment was an experiment performed in 1928 by Frederick Griffith. It was one of the initial experiments demonstrating that bacteria can get DNA via a process known as transformation. Griffith used two strains of Streptococcus pneumoniae. These bacteria manifested mice.
Which best describes nitrogen fixation? Nitrogen fixation is the process of creating free nitrogen for plants to absorb. Nitrogen fixation is the breakdown of nitrogen in the soil. Nitrogen fixation is the conversion of nitrogen gas into a usable form. Nitrogen fixation is the destruction of the bonds between nitrogen and other elements.
Answer:
C. Nitrogen fixation is the conversion of nitrogen gas into a usable form.
Explanation:
The process of assimilation of atmospheric nitrogen into organic compound by some type of micro-organisms is called nitrogen fixation. It is the conversion of nitrogen gas into a usable form for plants and other microbes.
What are the steps in nitrogen cycle?Nitrogen is the most important complex for the environment and is the most abundant gas. Nitrogen fixation is a step by step procedure that involves various steps.
The steps of nitrogen fixation is as follows:
Nitrogen fixation: nitrogen enters soil and surface waters, here it gets converted into two atoms, which combines to form ammonia.Nitrification: The conversion of ammonia into nitrates and nitrites. It involves different kinds of bacteria.Assimilation:The consumption of nitrites and nitrates by plants.Ammonification: it is the release of nitrogen back to organic form by death of plants and animals.Denitrification: The conversion of ammonia back to nitrogen is called as denitrification.Thus, the correct option is C.
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When muscle cells have more glucose than they need for energy, they may store some of the excess as?
Answer:
The answer is glycogen.
Explanation:
Glycogen is a polysaccharide of glucose that serves as a store of energy for muscle cells in animals and fungus.
Muscle glycogen turns into glucose in muscle cells and also in the liver is turned to glucose to assist the whole body including the central nervous system, which is the brain and the spinal cord.
I hope it helps!
which components are assembled during translation to make a protein
On scene, frantic family members direct you into the basement, where their 67dash–yeardash–old mother has shot herself in the chest with a small handgun. she is unresponsive and breathing six times a minute. the gun remains in her hand, which came to rest lying on her abdomen as she lies supine. what action should you take immediately?
Read the dermatology clinic note below. a skin bx performed in my office confirmed the diagnosis of ak. after explaining the results to mr. johnson, i recommended cryotherapy for the smaller lesions on his arms and dermabrasion for his scalp lesions. i explained to mr. johnson that ak can lead to squamous cell carcinoma and taught him about the risks of sun exposure, including further aks and melanoma. according to the clinic note, which is not true?
A gas has?
no definite shape or definite volume.
a definite shape but no definite volume.
a definite volume and definite shape.
a definite volume but no definite sh
Answer: The answer would be a
what are two major forces that shape and reshape earth? describe how each force works too please?
A 70-year-old woman with ongoing severe atrial fibrillation is scheduled for defibrillation. what is an aspect of the rationale and physiology of defibrillation treatment? a. interruption of disorganized impulses by the current allows the av node to readopt its normal pacemaker role. b. the goal is to depolarize the entire heart during the passage of current. c. defibrillation can be achieved using either a transcutaneous or transvenous pacemaker. d. defibrillation must be coincided with the r wave of the ecg in order to be successful.
Which of the following will lead to speciation?
A)Variation in gene pool
B)Lack of mutations
C)Absence of natural selection
Answer:
A)Variation in gene pool
Explanation:
Nearly one billion dollars a year are spent on clearing sediment from streams and lakes in the United States.
Which is the most common source of this sediment?
A. productive farmland that is over-irrigated
B. waste dumped by mining industries into the waterways
C. hilly areas where protective vegetation has been removed
Answer: Option C
Explanation: Hills are the most common source of sediments because they lack vegetation. Plants and trees hold the soil and thus prevent erosion of soil layer with water. The sediments from the hilly areas get carried by rain water or runoff, and add to the water bodies, like lakes and streams.
Waste from mining industries don’t have sediments in their waste, so option B is incorrect.
Option A is incorrect because over-irrigation will not affect the soil layer, as it is firmly held by the roots of the crops.
The thickest sedimentary deposits are found? near land, around the equator or in the middle of the ocean
How does the adrenal gland respond to stress? the adrenal cortex secretes mineralocorticoids and glucocorticoids in response to short-term stress. the adrenal medulla secretes epinephrine and norepinephrine in response to long-term stress. the adrenal cortex secretes epinephrine and norepinephrine in response to short-term stress. the adrenal medulla secretes epinephrine and norepinephrine in response to short-term stress. the adrenal medulla secretes mineralocorticoids and glucocorticoids in response to long-term stress?
The adrenal medulla secretes epinephrine and norepinephrine in response to short-term stress. The adrenal cortex responds to long-term stress by secreting glucocorticoids and mineralocorticoids, which affect various metabolic processes and are necessary for the body to adapt to chronic stress conditions.
The question concerns how the adrenal gland responds to stress. In response to short-term stress, the adrenal medulla secretes epinephrine and norepinephrine, which are hormones that mediate the fight-or-flight response. This process is mediated by the sympathetic nervous system (SNS). On the other hand, the adrenal cortex is responsible for responding to long-term stress by secreting glucocorticoids like cortisol and mineralocorticoids like aldosterone after being stimulated by adrenocorticotropic hormone (ACTH) from the anterior pituitary gland, which is triggered by the hypothalamus.
The corticosteroids released by the adrenal cortex play essential roles, from affecting glucose metabolism and stimulating glucose synthesis to the breakdown of fat into fatty acids in the adipose tissue which are then used for ATP production. Such hormones are necessary for the body's adaptation to long-term stress conditions but should not be used excessively in a medicinal capacity due to potential immune-suppressing effects, such as increased susceptibility to disease.
Cigarette smoke can affect cell differentiation during embryo development. which birth defect is most likely the effect of exposure to cigarette smoke?
childhood asthma - apex
What is the typical dental formula of catarrhines?
The answer is 2 / 1 / 2 / 3. This means that all of the catarrhines have 2 premolars and 3 molars, making a dental formula of 2.1.2.3. there are also different kind of species called anthropoid has a catarrhine dental formula like chimpanzee, all old world monkeys, apes and even humans.
The catarrhines, including humans, apes, and Old World monkeys, typically have a dental formula of 2-1-2-3, meaning two incisors, one canine, two premolars, and three molars on each side of their jaws.
Explanation:The typical dental formula of catarrhines, a grouping of primates that includes humans, apes, and Old World monkeys, is 2-1-2-3. This means they usually have two incisors, one canine, two premolars, and three molars on each side of their upper and lower jaws. This formula varies somewhat between species, with the primary variation usually being in the number of premolars. For example, in some species of baboons, one of the more common Old World monkey species, the dental formula can sometimes be 2-1-3-3.
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A client who has been taking diazepam for 3 months for skeletal muscle spasms and lower back pain has stopped taking the medication 2 days ago because it was no longer helping. now the pain has increased. the nurse should assess the client for: (select all that apply.)
Final answer:
After stopping diazepam, a client may experience several withdrawal symptoms. The nurse should assess for insomnia, diaphoresis, tremor, and vomiting, which are among the common withdrawal effects after ceasing benzodiazepine treatment.
Explanation:
The subject in question concerns the potential withdrawal symptoms that a patient might experience after stopping diazepam, a medication from the benzodiazepines family. Diazepam is often prescribed for anxiety, insomnia, seizures, and muscle spasms. Given that it is a CNS depressant, abrupt discontinuation after prolonged use can lead to withdrawal symptoms which the nurse should assess.
Insomnia - A common withdrawal symptom due to the rebound effect after cessation of a medication that has sedative properties.Euphoria - Not typically associated with withdrawal; euphoria might be a side effect when using the drug but not when discontinuing it.Bradycardia - Not commonly reported as a withdrawal symptom from benzodiazepines, typically withdrawal could cause increased heart rate rather than slowing it down.Diaphoresis - Withdrawal can induce excessive sweating as the body reacts to the absence of the medication.Tremor - A common symptom of withdrawal from diazepam as the body's nervous system becomes hyperactive.Vomiting - A notable withdrawal symptom that can occur after stopping diazepam.Therefore, the nurse should assess the client for insomnia, diaphoresis, tremor, and vomiting as these are symptoms commonly associated with withdrawal from diazepam.
How does the primary transcript in the nucleus of a eukaryotic cell compare to the functional mrna?
When a spinning ice skater pulls in his arms, he spins faster because __________?
Explain the reproductive advantage that an angiosperm (like apple trees) would have over mosses
Answer:
Angiosperm´s seed have outer protection and an endosperm
Explanation:
Mosses reproduce through the use of spores. The angiosperms reproduce by seeds, seeds offers many advantages, they have outer protection, a shell that protects the inside from damage, desiccation and adverse conditions. Seeds also have endosperm as nourishment for the embryo instead the spore doesn't have any built-in system to help a new mosses begin the growth process.
Angiosperms didn't need to rely on the wind or water to spread their pollen around, they need a pollinator.
What are the two major divisions of the overall nervous system?
Carbohydrate is considered the most essential nutrient.
a. True
b. False
Based on the results of the feeding experiment, what conclusions can you draw? select all that apply. (for help interpreting the results, see the hints.) roaches ate about the same amount from the dish with no hydramethylnon as they did from the control dish. roaches ate about the same amount from the dish with no oleic acid as they did from the control dish. roaches ate about the same amount from the dish with no corn syrup as they did from the control dish. roaches are refusing hydramethylnon. roaches are refusing oleic acid. roaches are refusing corn syrup.
Answer:
1. The roaches ate about the same amount from the dish without hydramethlynon as they did from the control dish.
2. Roaches ate about the same amount from the dish with no oleic acid as they did from the control dish.
6. Roaches are refusing corn syrup.
Explanation: The cockroaches ate the most bait when it did not have corn syrup in it, and ate very little of any bait that had corn syrup. Further experiments like this one have shown that it is actually the glucose in the corn syrup that the cockroaches detect and refuse.
Final answer:
Conclusions from the feeding experiment indicate that both hydramethylnon and oleic acid act as repellents to cockroaches if they are refusing to eat from dishes containing these substances, while corn syrup is likely an attractant if they eat less from dishes without it.
Explanation:
Based on the results of the feeding experiment, several conclusions can be drawn about cockroach behavior and preferences. If roaches ate about the same amount from the dish with no hydramethylnon as they did from the control dish, it suggests that hydramethylnon is not acting as a deterrent. Similarly, if they ate about the same from the dish with no oleic acid as from the control dish, this indicates that oleic acid is not repelling the roaches. On the other hand, if roaches are refusing to eat from dishes containing hydramethylnon or oleic acid, it shows these substances are effective repellents. Finally, if roaches ate less from the dish without corn syrup compared to the control, it implies that corn syrup is an attractant to cockroaches.
when a virus infects a bacterium what does the virus inject into the cell
The __________ of the heart rests on the diaphragm, and from its __________, the great vessels emerge (hint: not chambers)
What law covers all conservation issues in New Zealand?
CERCLA
soil and water resources conservation act<--- i chose
super fund
resource management act
Answer:
Option D, resource management act
Explanation:
In 1991, resource management act was passed in New Zealand, It is the main government legislative document which is referred for formulation of regulation for conservation of environment and natural resources
There are total thirteen regulations with in this legislative which broadly talks about
- Mandatory approvals from authorities for any activity affecting environment
- Approvals from authority to conserve the resources.
- Set of procedure
- Details of form, fees and laws
- Environmental standards for soil, water, air protection and usage
hence, option D is correct.
Which description of synapses is not correct? which description of synapses is not correct? second messengers can activate gene activities in the postsynaptic neuron. excitatory synapses cause depolarization. direct signaling involves the activation of g proteins. ionotropic receptors are ion channels that open and influence the polarization of the membrane?
Synapses are specialized junctions between neurons that allow for communication and transmission of signals in the nervous system. The description of synapses that is not correct is "Second messengers can activate gene activities in the postsynaptic neuron."
While three of the given descriptions of synapses are accurate, the statement that second messengers can activate gene activities in the postsynaptic neuron is not correct. Second messengers, such as cyclic AMP or calcium ions, play important roles in intracellular signaling and can modulate various cellular processes.
However, they do not directly activate gene activities. Gene activities in the postsynaptic neuron are regulated through complex processes involving transcription factors, DNA binding, and gene expression. Second messengers primarily participate in modulating intracellular signaling cascades and enzyme activities rather than directly influencing gene activities at the synapse.
While second messengers can play a role in intracellular signaling and modulating various cellular processes, including gene expression, they do not directly activate gene activities in the postsynaptic neuron at the synapse. Gene activities are typically regulated by transcription factors and complex cellular mechanisms, not directly by second messengers at the synapse.
Therefore, the description of synapses that is not correct is "Second messengers can activate gene activities in the postsynaptic neuron."
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An 8-ounce glass of low-fat chocolate milk contains 160 kilocalories (kcal) and 8 grams of protein. what percent of the kcal in the milk comes from protein?
Final answer:
Protein provides 4 kilocalories per gram. Multiplying the 8 grams of protein in the milk by 4 kcal/g gives 32 kilocalories from protein. This makes up 20% of the total 160 kilocalories in the milk.
Explanation:
To calculate what percent of the kilocalories in the milk come from protein, we need to know how many kilocalories are provided by the protein. Protein provides 4 kilocalories per gram, so if the milk contains 8 grams of protein, the protein contributes:
8 grams of protein x 4 kcal/g = 32 kilocalories from protein.
Next, we'll find the percentage of the total calories that come from protein:
(32 kilocalories from protein / 160 total kilocalories) x 100 = 20%
Therefore, 20% of the kilocalories in the low-fat chocolate milk come from protein.
promineces may be seen in the sun's ___
Prominences may be seen in the sun's corona