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Which of the following are atomic ions? Select all that apply. Cl- Ca2+ K2O O2-
Answer:
Cl-
Ca2+
Explanation:
An ion is a charged atom or group of atoms. An ion may be formed from an atom or from a molecule.
When an ion is formed from an atom, the atom now has either an excess or an insufficient number of electrons. This will lead to the development of a negative or positive charge in the atom as the case may be.
Cl- and Ca2+ are two ions formed from atoms, the first one has an excess of one electron while the other have lost two electrons
Which of the following are atomic ions?
Select all that apply.
Answer:
O2-
Ca2+
Cl-
Use evidence from the diagrams of macromolecules and information provided earlier to revise your explanation about whether sugar molecules provide all the elements needed to make the four types of macromolecules.
Answer:
Sugar molecules do NOT provide all the elements needed to make the four types of macromolecules.
Explanation:
This is because proteins, and amino acids need more types of elements than carbohydrates and lipids do. In nucleic acids, the elements are carbon, hydrogen, oxygen, nitrogen, and phosphorus. Notice that sugar molecules do not have either nitrogen or phosphorus. This same principle applies to proteins, which the elements of it are carbon, hydrogen, oxygen, and nitrogen.
All the elements needed to make the four types of macromolecules cannot be gotten from only sugar molecules.
Macromolecules are those biological molecules that are essential for life. There are four main types of these molecules and they include:
ProteinCarbohydratesLipids and Nucleic acids.All the above mentioned macromolecules have carbon, hydrogen and oxygen in their chemical structure with an exception of nucleic acids and proteins which contains nitrogen as an additional molecule.
From the diagram attached, the chemical structure of the sugar molecule shows that it's made up of carbon, oxygen and hydrogen atoms only.
Because there is no nitrogen in the sugar molecule, it cannot provide all the elements needed to make the four types of macromolecules.
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DNA and rna are both
Answer:
1/2 of an answer is zero answer.
Explanation:
The two main types of nucleic acids are DNA and RNA. Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. DNA provides the code for the cell's activities, while RNA converts that code into proteins to carry out cellular functions.
A hydra is an aquatic organism that lives in fresh water. During reproduction an outgrowth begins to form on the parent. The outgrowth continues to develop into the daughter organism and eventually breaks off of the parent. Which type of reproduction does this represent?
Answer:
grow or regenerate into separate individuals. Lizards cast off their tails to escape predators & then regenerate them . ... Hydra reproduces by budding using the regenerative cells. A bud develops as an outgrowth in Hydra due to repeated cell division at one specific site.
Budding is the asexual mode of reproduction. In budding, a genetically identical new organism grows attached to the body of parent Hydra and separates later on. In the process of budding, a bud develops as an outgrowth due to repeated cell division at one specific site .
Is a computer a living or non living thing ?
Answer:
Non-living
Explanation: It has no heart, lungs, or any other sort of function like bacteria or human/animals that would classify it as living.
What’s the difference between a Jovian planet and regular planet?
Answer:
Jovian planets are larger, further from the sun, rotate faster, have more moons, have more rings, are less dense overall and have denser cores than terrestrial planets. Jovian planets also have gaseous atmospheres, with the main gases being hydrogen and helium.
Imagine you are working in a real lab setting and when you test the catalase and water together you see a reaction. What does this tell you?(select all that apply) - catalase is not specific to hydrogen peroxide -posible contaminant in the water causing a reaction -catalase is the negative control -you must complete the experiment again to verify your results
Answer:
-possible contaminant in the water causing a reaction
-you must complete the experiment again to verify your results
Explanation:
The enzyme catalase is present in all living organisms and it functions in the breakdown of the hydrogen peroxide into water (H2O) and oxygen gas (O2).
Catalase is specific to hydrogen peroxide. Catalase and water reaction is seen in the lab test because there is the possibility of water contamination and maybe the reaction is not correctly evaluated, so one must complete the experiment again to verify the result.
Hence, the correct options are 2nd and 4th option.
If you are working in a real lab setting and you found out that testing the catalase using water produced a reaction, it is highly likely that the water is contaminated.
Catalase is an enzyme that is substrate specific and its substrate is hydrogen peroxide. The enzyme breaks down hydrogen peroxide to produce water and oxygen. The latter is often seen as bubbles in reactions and the equation is as follows:
[tex]2H_2O_2 ---> 2H_2O + O_2[/tex]
Ordinarily, catalase will not produce any reaction with water. However, if the water contains a slight amount of hydrogen peroxide, such water might be seen as causing a reaction with catalase.
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The presence of a clot is acceptable in: A. red stopper tubes. B. lavender stopper tubes. C. green stopper tubes. D. light blue stopper tubes.
Answer:
The correct answer is : A. red stopper tubes.
Explanation:
In phlebotomy the red stopper tubes are plastic tubes or container that have a clot forming or clot activator in It instead of anticoagulants, preservatives or material that prevent blood to mix like other blood tubes.
Lavender, purple, light blue or green all have anticoagulant or preservative in them to prevent from clotting the blood. This tube is used for taking serum sample in it for test.
Thus, The correct answer is : A. red stopper tubes.
which of the following determines how many meals a client should eat per day?
Answer: c. According to how the client's body responds
Explanation:
Dietary requirements are paramount in body building as they supply the body with the nutrients needed to maintain a certain type with a mix of macro and micro nutrients.
This mix however is quite varied per person as people process nutrients differently. The amount of meals that should be taken therefore will depend on how the client's body responds because no single plan is a one size fits all.
Cats are smaller animals than humans. Which would you expect to have a (relatively speaking) more active thyroid glan
Answer:
A final conclusion is not possible from this information
Explanation:
In mammals, the thyroid is an endocrine gland composed of two lobes that are connected by a bridge of tissue referred to as thyroid isthmus. The thyroid gland produces different types of hormones including calcitonin, triiodothyronine and thyroxine. These hormones are known to increase basal metabolism and thus affect metabolic-associated mechanisms including appetite, nutrient absorption and gut motility. However, thyroid hormones are not directly associated with the growth rate. It is important to note that the growth hormones are synthesized by the pituitary gland.
Which of the following statements is correct relative to solar cheilosis (SC)?
RSE PDFS
Answer:
The correct answer is "all of the above".
Explanation:
The missing options of this question are:
A. The major etiologic factor associated with SC is ultraviolet radiation, principally UV-B.
B. Factors predisposing to SC include skin phenotype, age, male sex, outdoor occupation, rural living, and host immune status.
C. AK and SC serve as clinical dose-meters for chronic UVR exposure.
D. All of the above.
The correct answer is option D. "All of the above".
Solar cheilosis (SC) is a type of precancer of the lower lip, induced by ultraviolet light exposure, particularly by the exposure of UV-B from sunlight. However, UV-B exposure is not the only cause of SC, there are different factor that predispose to the development of this disease, including skin phenotype, age, male sex, outdoor occupation, rural living, and host immune status. Particularly because people with an outdoor occupation is more expose to sunlight and people with an detrimental immunological condition cannot fight SC as easy as a healthy person. According to the scientific article "Epidemiology of actinic keratoses and squamous cell carcinoma" by Salasche SJ., Actinic keratosis (AK) and SC serve as clinical dose-meters for chronic UVR exposure
Change in fish trait over time
Identify the low-pressure areas on the map.
Answer: the low-pressure areas on the map are the purple triangle and half circles
Explanation:
which tract in the direct motor pathway has axons which terminate in the nuclei of nine pair of cranial nerves
Answer:
Corticobulbar Tract
Explanation:
It should be understood that the corticobulbar tract (CBT) arises mainly from the lateral portion of the part known as primary motor cortex. The corticobulbal tract axons is discovered to have projected from the genu of the internal capsule into the other three parts known as cerebral peduncle, the basis pontis, and the medullary pyramids on the ipsilateral side.
The corticobulbar tract is responsible for carrying motor information from motor cortex to the muscles of head, leg.
Which condition occurs in the presence of cellular damage? Cells shrink. ATP production increases. Osmotic pressure decreases. Sodium and water move into the cell.
Answer:
Sodium and water move into the cell
Explanation:
Sodium and water move into the cell. This is because
Cellular damage result in failure of the Na+/k+ pump, allowing movement of sodium ions into the cell. This concentration of sodium pulls water in, resulting in hydropic swelling. Cellular damage results in the cell's inability to perform normal metabolic functions because APT decreases and Osmotic finally pressure increases.
Horses can be cremello (light cream), chestnut (brown), or palomino (gold with white manes and tails). Oddly, breeders have been unable to make a pure-breeding palomino strain. In crosses, breeders see the following results: cremello X palomino: 1/2 cremello, 1/2 palomino palomino X palomino: 1/4 chestnut, 1/4 cremelo, 1/2 palomino chestnut X palomino: 1/2 chestnut, 1/2 palomino How many genes are involved in these results
Answer:
There is only one gene involved in these results.
Explanation:
You will find the complete answer and explanation in the attached file due to technical problems.
from a chemical perspective the words molecule and compound can be used interchangeably. True or False
Answer:
False
Explanation:
A molecule can be defined as a particle that comprises of two or more atoms of an element that are bound together by a chemical bond. Molecules are usually electrically neutral. An example of a molecule is O2 (oxygen molecule); it comprises of two atoms of oxygen
A compound can be defined as a substance that is made of two or more different chemical elements that are bound together by a chemical bond which could either be an ionic bond or a covalent bond. An example of a compound is NaCl which is table salt; NaCl is a compound that is made up of one sodium element (Na) and one chlorine element (Cl) bound together by ionic bonds.
Therefore, when atoms combine, they form molecules, while a compound is a molecule that comprises of atoms of different elements. So we can say that not all molecules are compounds, but all compounds are molecules, hence molecule and compound can't be used interchangeably.
If you have a volume of 8L and a mass of 16kg, what is the density
2000kg/m³
2g/cm³
Explanation:8 l = 8 dm³ = 0.008 m³
d = m/V
= 16kg/0.008m³
= 2000kg/m³
= 2g/cm³
How does Dr. Werner's project protect iguanas and help local farmers too?
Answer:
According to herpetologist Dagmar Werner, the iguana can help farmers reap a profit without destroying the environment. Werner is spearheading a movement to introduce cultivation of the green iguana to farmers in Central America, where its once-plentiful population has been decimated by hunters and shrinking habitat.
hope this helps you
Which of the following is not a step involved in critical thinking? a. asking questions b. assessing validity c. writing a summary d. adjusting conclusions Please select the best answer from the choices provided A B C D
Answer:
C. writing a summary
Explanation:
Fatttttt am smartt babes
The one that is not a step involved in critical thinking is writing a summary. The correct option is c.
What is critical thinking?The capacity for effective information analysis and opinion creation is known as critical thinking.
In order to think critically, you must be conscious of your own prejudices and presuppositions when you come across information and use uniform standards when assessing sources.
The capacity for factual analysis and opinion formation is known as critical thinking.
A type of emotional intelligence, it, as when the occasion calls for it, a person with critical thinking abilities can think clearly and logically. They are able to make decisions and solve problems more effectively as a result.
Writing a summary is the stage that is not a part of critical thinking.
Thus, the correct option is c.
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3. How long is a rectangular strip of land with a width of 5/6 km and an
area of 7/6 square km."
1
5/7 km
7/5 km
5/36 km
O 35/36 km
Answer:
Length, [tex]L=\dfrac{7}{5}\ km[/tex]
Explanation:
Given that,
Width of rectangular strip is 5/6 km
Area of rectangular strip is 7/6 km²
We need to find the length of the rectangular strip. The area of a rectangular shaped object is given by :
A = L × B
Putting the values of A and B, we get :
[tex]L=\dfrac{A}{B}[/tex]
So,
[tex]L=\dfrac{\dfrac{7}{6}}{\dfrac{5}{6}}\\\\L=\dfrac{7}{6}\times \dfrac{6}{5}\\\\L=\dfrac{7}{5}\ km[/tex]
So, the length of the rectangular strip is [tex]\dfrac{7}{5}\ km[/tex].
One popular evolutionary model for the origin of flight in vertebrates is that flight evolved in:_______.
Answer:
skydiving behavior
Explanation:
The flight is an amazing adaptation that consists in the use of aerodynamic forces by flapping the wings. In vertebrates, flight evolved in three independent events: in pterosaurs (i.e., prehistoric winged reptiles), birds, and bats (mammals). In tetrapods, i.e., vertebrates with four legs, it is believed flight had a gliding origin, thereby this feature would have emerged as a consequence of the skydiving behavior necessary to steer the descent.
Question 9 of 10
What does the graph predict about the world in the year 2050?
World Population Growth
20,000
10,000
World
5,000
2,000
Asia
1,000
Europe
500
FI
200
100
United States,
Canada, and Greenland
Mexico
Central America, Caribbean Islands,
and South America
50
20
Oceania (Australia and
nearby islands in the Pacific)
10
1950
2020
1970
1980
1993
2000
2030
2040
O A. The birthrate will be double the death rate
B. Earth's population will be increasing quickly.
C. The carrying capacity will be decreasing quickly.
O D. The birthrate and death rate will be nearly equal.
Answer:
B i think is the answer bexcause 2040
Classify each characteristic of transcription according to whether it is found in prokaryotes only, eukaryotes only, both, or neither.
a. Translation of the mRNA begins before transcription is finished.
b. The promoters contain 2 common 6-base sequences, which are located 35 nt and 10 nt upstream from the start site-
c. RNA polymerase unwinds and separates the 2 strands of the entire transcription unit before transcription begins.
d. After the mRNA molecules are transcribed, they are modified.
e. Transcription factors must bind to the promoter before RNA polymerase Il binds to DNA.
f. Within the transcription bubble, RNA nucleotides match up with complementary bases on the template DNA strand.
g. Only one type of RNA polymerase is used for transcription.
h. Four different RNA polymerases are used for transcription.
i. New RNA nucleotides are added to the 3' end of the growing RNA transcript.
j. A number of transcription factors interact with RNA polymerase Il to form an initiation complex at the promoter.
Answer: a
Explanation:
because it is
each characteristic of transcription according to whether it is found in prokaryotes only, eukaryotes only, both, or neither. Translation of the mRNA begins before transcription is finished. Thus option A is correct.
what is transcription ?
Transcription is the first step of gene expression that involves the formation of RNA molecule from DNA;Transcription occur in three steps such as initiation, elongation and termination and this process is catalyzed enzymatically
Initiation refers to the step where RNA polymerase attaches to the DNA molecule and moves along the DNA strand until a promoter sequence is recognized.
It is called as the transcription start sites and the DNA double helix then unwinds and all the bases are exposed and it acts as a template for a new mRNA strand.
In Elongation step Ribonucleotides are bind to the template strand which enables the growth of mRNA growth, in Termination step RNA polymerase encounters a terminator sequence and the transcription stops. RNA polymerase then releases the DNA template.
RNA Processing is the step where The transcribed RNA is known as the pre-mRNA which is processed and convert it into mature RNA. RNA processing steps involve in Capping, Polyadenylation, Splicing
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Why do higher trophic levels in most ecosystems
contain fewer organisms than lower trophic
levels?
A. Energy available for use to the highest trophic
level is small
B. Energy available for use to the lowest trophic
level is small.
C. Energy available for use to the highest trophic
level is large.
D. Energy available for use to the highest and
lowest trophic levels is the same.
Answer:
A.Energy available for use to the highest trophic level is small
Explanation:
As you go up in the trophic levels, only about 10% of the energy gets transferred from one level to the next. For example, the plants can only harvest 1% of the Sun's energy. The primary consumer can only absorb 10% of the energy from the plant he eats, so .1% of the total energy. The secondary consumer can only absorb 10% of the energy he get from eating the primary consumer, so .01%, and so on and so forth. As we climb up the trophic levels, there is less energy available and therefore less organisms.
Answer:
A. Energy available to use in highest trophic level is small
Explanation:
A is the correct answer because in trophic levels, 10% of the energy from the prior level is transferred to the proceeding level.
So for example, 100% of a plant's energy is transferred to its consumer, the consumer can only use 10% of the original amount of energy.
Then the second level consumer can only use 1% of the original amount of energy.
Then, the tertiary consumer can only use .1% of the original amount of energy.
This makes being a higher level consumer less energy efficient than being a lower level consumer, resulting in fewer higher trophic levels.
Which describes a Mendelian trait?
A. Humans can have a variety of shoe sizes.
B. Humans can have dimples or no dimples.
C. There are many different skin colors for humans.
O
D. Human height is controlled by many genes.
Answer:
D. Human height is controlled by many genes.
Explanation:
Human height is controlled by many genes. describes a Mendelian trait.
Height is a model trait that is controlled by variant of genes and not by only one gene. Height is a contribution of many genes because the height of a body consists of different body parts, such as the torso, leg bones, and even the neck.
Hence, the correct option is "D".
Answer:
correct answer is actually b
Explanation:
i just got it wrong
how to stay physically healthy during online school
Answer:
*Drink water
*In the interval time have fruits.
*Strech the body in interval and avoid using mobile phones.
Answer:
drink water
take a walk
eat healthy
get enough sleep
Explanation:
Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was spent on each side
Answer:
This question is incomplete; the complete question is:
Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was spent on each side. What is the INDEPENDENT variable?
The answer is the DRY OR WET ENVIRONMENT
Explanation:
Independent variable in a scientific experiment refers to the variable that the experimenter manipulates or changes in order to effect an outcome in another variable called the dependent variable.
In this experiment, researchers are conducting an experiment with pillbugs, which they place in a wet or dry environment to see how much time is spent by the pillbugs on each side. The independent variable in this case is the DRY OR WET ENVIRONMENT which the pillbugs were placed because it is the variable that the researchers could change or manipulate in order to bring out an outcome in the amount of time spent (dependent variable).
Which three elements are often found in organic compounds?
Carbon, hydrogen, and oxygen are the three major elements found in organic compounds. Apart from that, nitrogen, phosphorus, etc. are also seen in organic molecules or compounds.
What is an organic molecule?Organic molecule examples are carbohydrates, proteins, lipids, etc. that are found in the bodies of living animals and plants. Carbohydrate molecules, such as glucose, are composed entirely of carbon, hydrogen, and oxygen, whereas proteins are composed entirely of amino acids. Each amino acid is made up of carbon, hydrogen, oxygen, and nitrogen, and a lipid is entirely made up of only carbon and hydrogen.
In organic molecules, these three remain in high proportion, as a result of which they can be easily broken down by the enzymes in our body or by decomposers after death. All three of these enter the atmosphere via the carbon cycle, for example.
Hence Carbon, hydrogen, and oxygen are the three major elements found in organic compounds.
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Which type of lens can be rotated to select different magnifications?
Answer:
objective lenses
Explanation:
objective lenses with different magnifications, screwed into a circular "nosepiece" which may be rotated to select the required lens.