The scientist should eep all variables except water temperature constant because to ensure that the results only reflect changing temperature. Thus, the correct option is D.
What is Embryo?An embryo may be defined as an unborn or unhatched offspring in the process of development. It is also characterized as the early stage of the development of multicellular organisms.
Here, scientists should keep all the variables except water temperature constant because they are analyzing the effect of only water temperature on the growth and maturation of a frog's embryo into mature tadpoles.
Therefore, it is well described above.
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Question 9 (Multiple Choice Worth 2 points)
(05.04 MC)
According to the hierarchal classification of a select group of organisms given below, which two organisms are most closely related according
to Linnaean taxonomy and why?
Kingdom ANIMALIA
Phylum CHORDATA
Class MAMMALIA
Order CARNIVORA
Felidae
Felis Panthera
catus
pardus
Pardalis
Canidae
Canis
familiaris lupus
Ursidae
orelos
Ursus
horribilus
Canis familiaris and Felis catus, because they belong to the same class
Felis catus and Panthera pardalis, because they belong to the same family
antnera parous and ursus nomnens necause they belong to the same orner
Ursus arclos and Canis lupus, because they belong to the same genus
The two organisms that are most closely related according to Linnaean taxonomy are Felis catus and Panthera pardalis, because they belong to the same family
What is taxonomic classification?Linnaean system of classification consists of a hierarchy of groupings called taxon. Each taxon is arranged in a hierarchical order.
The hierarchical arrangement of the taxon are as follows:
KingdomPhylum/DivisionClassOrderFamily GenusSpeciesThese taxa are arranged from the most inclusive to the most exclusive i.e. members of the same species are the most closely related in that order.
This suggests that Felis catus and Panthera pardalis are the most closely related because they belong to the same family.
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boron& molybdenum are essential nutrients classified as: a) cofactors,b) antioxidants,c) major minerals,d) trace minerals
Answer:
d) trace minerals
Explanation:
Boron (B) and molybdenum (Mo), two of the seven essential micronutrients, also known as trace elements, are required for the normal growth of most plants.
researchgatenet
Boron and molybdenum are essential nutrients classified as trace minerals. Therefore, option D is correct.
What are essential nutrients in plants?An important nutrient is one that the plants cannot produce on their own or cannot produce in sufficient levels for basic activities, hence it must be obtained from the environment in order for the plant to function normally.
Essential elements are classified into two categories on the basis of the requirements of the plant and those are macro nutrients and micro nutrients. Macro minerals contain oxygen, nitrogen, sulfur, hydrogen, magnesium, manganese, and carbon. Microminerals contain boron, molybdenum, and zinc.
Thus, boron and molybdenum are essential nutrients classified as trace minerals. Therefore, option D is correct.
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During the mining process, which step immediately follows separating the mineral from the waste rock?
refining
distribution
crushing and milling
drilling and blasting asap please
Comminution
In order to separate the valuable components of an ore from the waste rock, the minerals must be liberated from their interlocked state physically by comminution.
The step that immediately follows separating the mineral from the waste rock during the mining process is crushing and milling. Therefore, the correct statement is option C.
What is crushing and milling?When the mineral gets separated from the waste rock in the form of large chunks, it further needs to be processed before it can be used. Crushing and milling break down the mineral into smaller pieces, which are easy to be processed early and refined.
Crushing uses mechanical force to break down the mineral, while milling grinds the mineral into a fine powder using heavy machinery such as crushers, ball mills, etc.
After the crushing and milling process, the mineral is more suitable for further processing, which involves additional steps such as flotation, leaching, etc. The final product formed is then distributed to the market.
Therefore, crushing and milling involve separating the mineral from the waste rock during the mining process.
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Write a proposed reaction for the oxidation-reduction of copper (II) iodide. Justify the choice of the substance that reduces the copper, based on the fact that a precipitate forms when copper nitrate and potassium iodide react, even though solubility rules would contradict this fact. Also, justify the choice using the atomic structure of potassium ion and iodide ion.
2Cu2^+ + 2I^- ----> 2Cu^+ + I2
The reaction performed in the experiment is;
2 Cu(NO3)2 + 4 KI → 2 CuI (s) + 4 KNO3 + I2
What is redox reaction?A reaction that happens when an oxidizing substance and a reducing substance come into contact. In the reaction, the reducing substance obtains electrons while the oxidizing substance loses electrons.
The precipitate results from the reduction of Cu2+ by iodide ions to Cu+, which is insoluble in water. Iodine is a good oxidizing agent, and since its outermost shell must be filled with one electron, this is why. On the other hand, because it may quickly lose its one electron, potassium makes a good reducing agent.
The oxidation - reduction equation is as follows;
2Cu2^+ + 2e ----> 2Cu^+ reduction half equation
2I^- ----> I2 + 2e. Oxidation half equation
Balanced redox reaction equation;
2Cu2^+ + 2I^- ----> 2Cu^+ + I2
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Explanation:
The proposed reaction for the oxidation-reduction of copper (II) iodide is as follows:
2 CuI + Cl₂ → 2 CuCl + I₂
The substance that reduces copper in this reaction is chlorine gas (Cl₂). Chlorine is capable of oxidizing iodide ions (I⁻) to form iodine (I₂), while itself getting reduced to chloride ions (Cl⁻).
Justification based on the formation of a precipitate:
When copper nitrate (Cu(NO₃)₂) and potassium iodide (KI) react, a precipitate of copper (II) iodide (CuI₂) forms, even though it contradicts the solubility rules. According to the solubility rules, most iodides are soluble, including potassium iodide. Copper (II) compounds are also typically soluble. However, in this specific reaction, the formation of a precipitate suggests that a redox reaction is taking place.
Justification based on atomic structure:
The atomic structure of the potassium ion (K⁺) and iodide ion (I⁻) provides further insight into the choice of chlorine as the reducing agent. Chlorine has a higher electronegativity than iodine, making it more capable of accepting electrons. When chlorine reacts with iodide ions, it gains electrons and gets reduced. The potassium ion, on the other hand, has a lower electronegativity than iodine. Therefore, it is less likely to accept electrons and participate in the reduction of copper ions.
In SummaryOverall, based on the fact that a precipitate forms when copper nitrate and potassium iodide react, along with the atomic structure of potassium and iodide ions, it is evident that chlorine gas is the substance that reduces copper (II) iodide in the proposed reaction.
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name the organelles which are abundant in pancreas
Answer:
endoplasmic reticulum
A cell that is normally found inside freshwater environment mostly water is placed in a container and surrounded by a salt water solution which of the following will most likely happen to the cell?
The most likely happen to the cell is It will lose water and shrink.option A is correct option.
What do you mean by the hypertonic solution?A hypertonic solution is one that has dissolved particles than normal cells and blood do, including salt
A freshwater plant cell will lose water and shrink if it is submerged in salt water for an hour.
The missing option in query is given below:
It will lose water and shrink.
It will reach a state of equilibrium.
It will use energy and pump extra salt out of the cell.
It will swell and burst.
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Trapping has severely reduced the population of rabbits in an ecosystem, as shown in the bar graph below. What is the most likely effect this will have on other organisms?
a.
The snake population will decrease rapidly and the grass population will increase rapidly.
b.
The hawk population will increase rapidly and the rabbit population will decrease rapidly.
c.
The grass population will decrease rapidly, and the snake population will increase rapidly.
d.
The grass, rabbit, snake, and hawk populations will all decrease rapidly.
The correct option is (a)The snake population will decrease rapidly and the grass population will increase rapidly due to the reduced population of rabbits in an ecosystem.
what is a food chain?A food chain is a group of organisms that are connected in a single direction and through which nutrients and energy pass as one organism feeds another. The term "trophic level" refers to each level of the food chain. In certain cases, detrivores or decomposers are also included in the sequence of organisms that begin with producers and end with consumers.
A decline in one population will have an impact on an organism at a different trophic level of the terrestrial food chain, which is as follows: grass → rabbit → snake → Hawk
Because snakes rely on rabbits for food, a decline in the rabbit population will result in a decline in snake numbers. Since rabbits consume grass, the decline in rabbit populations will result in more grass.
Therefore, If the trapping is successful, the decline in snakes and the quantity of grass will allow the rabbit population to rebound, and eventually, the ecosystem's balance will be restored.
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Two neurons are shown below. In the drawing, label an axon, a dendrite, and a nucleus as well as a synapse
A neuron may be defined as the rudimentary unit of the brain and nervous system. The nerve cells are composed of a structure of neurons that transmits and acquire signals from your brain.
What are the parts of a Neuron?Neurons have the following parts each with definite functions:
Axon: It conducts electrical impulses to other neurons. Dendrites: They transfer the received information to the soma or cell body of a neuron. Nucleus: A central part of the soma consists of a nucleus. Synapse: It transmits the nerve impulse between two successive nerve cells.The various thread-like projections are dendrites, a long thin slender structure known as Axon, while the terminal spherical structure constitutes the synapse, and the central part within the cell body or soma is known as the nucleus.
Therefore, it is well described above.
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1. How does the marine biome retain its salinity?
O The salt remains when marine water evaporates.
O The salt remains when marine water condenses.
Answer:
when marine water evaporates
Give three evidences from the Genesis account that the Flood was universal.
question is in the photo
Answer:
third optiOn! :)
Explanation:
Hi i just need a topic for essay SBI4U(Biology 12) thank you:)
Answer:
cellular respiration
Explanation:
easy and good
Hormones are chemicals made in the soil that affect parts of plants.
a. True
b. False
Hormones are chemicals made in the soil that affect parts of plants. The statement is false.
How are gibberellins able to affect other parts of the plant?Gibberellins stimulate the growth of shoots which increase the biomass and vegetative growth of plants. If vegetative growth increases, the root biomass is also increases.
So we can conclude that other parts of the plant are also affected due to gibberellin because it stimulates the growth of shoots which is the upper portion of the plant.
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Earth scientists have concluded that the methods of harnessing energy that have been used over the past tWO
centuries, such as the burning of fossil fuels, are causing climates around the world to change more quickly and
suddenly than ever before in human history. Evidence includes increased air temperatures, rising sea levels, and the
shrinking of glaciers in Greenland, Alaska, and other regions of Earth. The most complex level of organizational
hierarchy that climate change could potentially affect is Earth's
O biosphere.
O communities.
O organisms.
O populations.
Answer:
populations
Explanation:
Frontal view of the lower leg
a) anterior view of the fibula
b)anterior view of the femur
c)distal view of the calcaneus
d)sagittal view of the tibia
The frontal view of the lower leg is the anterior view of the fibula. Thus, option "A" is correct.
What are Tibia and fibula?Tibia and fibula are the two bones of the legs which form the lower bones of the leg. The tibia is the longer bone while the fibula is the shorter bone of the legs.
Many bones originate from this tibia and fibula like soleus originates at the posterior side of the fibula, peroneus longus originates at the superior of the fibula, and Tibialis anterior originates at the upper two-thirds of the tibia.
Thus, option "A" is correct.
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which of following is true about sexual reproduction?
Haploid cells formed by meiosis combine to produce a diploid cell.
2. What procedure did you use to complete the lab? Outline the steps of the procedure in full sentences. Virtual Lab: Water Erosion
The procedures that can be used to perform water erosion laboratory practicals are:
The use of detachmentTransportation Deposition.What is Water Erosion?This refers to the biological process where rock particles are broken down into smaller particles and how they are removed by water.
Hence, we can see that in a laboratory experiment, one would need different apparatus such as:
PitchersBottlesSoilWater, etc.This would be used to test the loss of water as it is put into the soil from the set of bottles to see how much the water is retained.
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Which phase of the cell cycle directly follows prophase?
OA. Interphase
OB. Metaphase
OC. Anaphase
OD. Telophase
The cell cycle directly follows prophase is metaphase.
What is Cell cycle?A cell's growth and division are accompanied by a sequence of processes known as a cell cycle. A cell spends the majority of its time in what is known as interphase, where it develops, duplicates its chromosomes, and gets ready to divide.
The cell then exits interphase, goes through mitosis, and finishes dividing. Each of the resultant cells, referred to as daughter cells, enters its own interphase to start a fresh cycle of the cell.
The procedure through which cells multiply and divide into two new cells as the cell cycle. G1, S, G2, and M are the phases of the cell cycle, respectively. Cells are getting ready to divide at the G1 stage.
Therefore, The cell cycle directly follows prophase is metaphase.
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ll of the chemical and molecular reactions of the cell are called the cell's ___.
Group of answer choices
potential energy
metabolism
chemiosmosis
endoplasmic reticulum
cells metabolism process
View attachment.
Select the TRUE statement(s)
- K.C was unable to recognize his family and usually forgot his name
-K.C’s bilateral hippocampal damage probably accounts for his anterograde declarative amnesia
-K.C’s case suggests that NO declarative memories are stored in the cortex
How much of planet Earth is covered in water?
Group of answer choices
Between 50 - 69%
Above 70%
Below 50%
Answer:
Above 70%
Explanation:
About 70% ( approximately 3/4 ) of the surface of the earth is covered with water. We can find water inside the earth in lakes, rivers, water vapor, etc. But only, about 3% of freshwater can be found on earth. Of that, only, about 0.01% can be used to drink. So, it is clear to us that, how important it is to protect water resources without polluting them.
Kingdom Protista or Protoctista
Helpp :(
[tex]{\huge \underline{{ \fbox \color{red}{A}}{\fbox \color{green}{n}}{\fbox \color{purple}{s}}{\fbox \color{brown}{w}}{\fbox \color{yellow}{e}}{\fbox \color{gray}{r } }}}[/tex]
It is made up of unicellular or multicellular beings, with aerobic or anaerobic respiration, autotrophs or heterotrophs, sexual or asexual reproduction.
I hope I've helped : )
Answer:
Kingdom protoctistacauseitcategorises all the bacteria
name the tissue responsible for transporting water mineral salts and food in plants
Answer:
Xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support.
Explanation:
Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements.
Hope it helps!
Answer:
xylem is the tissue responsible for the transportation of water, mineral salts.
how many ATP molecules are produced from the breakdown of fatty acids
9
B There are two missing words in each question Put them in
Example:
8
your parents got jobs and, if so, what they do?
Have your parents got jobs, and if so, what do they do?
When trains for London leave and how much a return ticket?
6
7
Where you buy your new mobile phone and how much it cost?
Where you last night and what you do?
Where I buy a cheap computer in this town and how I get there?
Answer:
that's all I can.
hope it helps. good day.
I need help with this plsss!:)
Answer:
D
Explanation:
The other options are illogical and D is the only one relating to plants.
Which is true of Pluto?
© A. Pluto is not always the planet farthest from the sun.
® B. Pluto does not revolve around the sun.
C C. Pluto revolves around the sun but does not rotate.
• D. Pluto's orbit is almost perfectly round.
What kind of metabolic pathway is this and why?
Answer:
catabolic pathway/ catabolism
Explanation:
The energy profile diagram shows an exothermic or exergonic process - as the process releases energy. Catabolic reactions breakdown larger molecules into smaller ones, giving off energy. For example the glycolysis.
What is the impact on human health as we try to stay ahead of the evolutionary process?
(Hint: Consider diagnoses of new illnesses, research and development of medicines, and biological factors like antibiotic resistance).
Staying ahead of human evolution has provided more harm than good impact on human health. According to an evolutionary perspective, several genetic variations interact with surroundings and other genes during development to affect the phenotypes of diseases.
Evolution is a set of intricate mechanisms through which populations of organisms change over time and is regarded by scientists as the fundamental, unifying notion of biology. Genetic adaptations brought about by evolution enable organisms to endure, remain healthy, and flourish.]Often sparked by war and natural disasters, public health evolved via trial and error and the expansion of scientific medical knowledge. Specifically, urbanization and social changes, as well as other aspects of the growth of community life, increased the demand for organized health protectionHence , The process of evolution has significantly impacted human health. Comparing our new environment to the ones we developed from aids in understanding
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Discuss the role played by transcription during replication.
Answer:
Explanation:
Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template. Meanwhile, mRNA is comparable to a copy from a reference book because it carries the same information as DNA but is not used for long-term storage and can freely exit the nucleus. Although the mRNA contains the same information, it is not an identical copy of the DNA segment, because its sequence is complementary to the DNA template.
