Answers
We can see from the image that what we have are two protons and two neutrons.
What are protons and neutrons?Protons are positively charged particles with a mass of approximately 1 atomic mass unit (amu). They are designated by the symbol "p+" and are responsible for the atomic number of an element, which determines its identity. In other words, the number of protons in the nucleus of an atom determines what element it is.
Neutrons, on the other hand, have no electrical charge and a mass of approximately 1 amu. They are designated by the symbol "n" and are found alongside protons in the nucleus. The number of neutrons in the nucleus can vary for a given element, resulting in isotopes of that element.
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Related Questions
You have been tracking an adult female otter who weighs 25 kg. How many kilocalories must she
consume each day to maintain her body weight? Show your work
Answers
Answer:
The correct answer is - 6250 kcal.
Explanation:
Otters are carnivorous mammals that depend on the different types of organisms for their food including snails, insects, and fishes or birds. An otter requires 250 Kcal/kg to maintain its body weight for survival so,
Given:
weight of otter = 25 kg
Requirement 250 kcal per kg
Therefore,
The daily calory consumption of otter: weight * required calories
250*25= 6250 kcalories
Which of the following terms refers to the practical applications of scientific knowledge?

A.
Technology

B.
Scientific methods

C.
Medicine

D.
Systems science
Answers
The answer is option A, Technology.
Complete each sentence by dragging the proper label into the appropriate position. phosphate buffer system A is any mechanism that resist changes in pH. bicarbonate A uses direct elimination of acids bases, or carbon dioxide from the body in order to adjust systemic acidity. carboxyl A substance that binds H+ during times of acidity and releases H+ during time of alkalinity is referred to as a
Answers
A buffer is any mechanism that resists changes in pH.
A substance that binds H+ during times of acidity and releases H+ during times of alkalinity is referred to as a phosphate buffer system
A uses direct elimination of acids bases, or carbon dioxide from the body in order to adjust systemic acidity bicarbonate buffer.
What is a buffer?A buffer is a substance that resists changes to its pH when a small quantity of a strong acid or base is added to it.]
Buffers are important in living organisms as they help to maintain the pH of the blood to prevent extreme changes in the body.
There are several buffer systems in the body. The buffer systems in the body are:
the bicarbonate buffer system (HCO₃⁻/CO₂) - consists of bicarbonate ions and carbon dioxidehemoglobin buffer present in erythrocytesthe phosphate buffer,proteins, in the blood andammonium buffer.Learn more about buffer systems at: https://brainly.com/question/11033169
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Which of the following statement is true about recombinant DNA
Answers
Answer:
It combines genes from two different organisms.
What are two substances that need to be transported out of animal cells, in order to survive
Answers
What is the differences of mitosis and meiosis
Answers
mitosis refers to the parts of the original nucleus into two nuclei. On the other hand, meiosis refers to each having half chromosomes of the original cell.
in mitosis, there is the maintenance of chromosomes takes place while meiosis leads to a reduction in the no. of chromosomes. There are no variations in mitosis and variants occur in meiosis.
hence at last we can say that the above are the major difference between mitosis and meiosis. All of the explained differences will clearly lead to identifying them in particular. mitosis and meiosis plays a vital role in formation of gametes.
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what are herbivorous plants?
Answers
Answer:
What is herbivory?
Herbivory is the act of eating plants. Herbivory occurs above and below ground. Herbivores may eat any part of the plant above the soil including leaves, stems, flowers, fruit and any part of the plant below the soil including roots and tubers.
What are herbivores plants?
Plants that are parasites can still be considered herbivores. A parasite is an organism that lives on or in another organism and gets its nutrients from it. Parasitic plants get their nutrients from other plants, called host plants.
Which organs perform both mechanical digestion and chemical digestion of food?
Answers
Answer:
stomach
Explanation:
stomach churns the food (mechanical digestion) and the enzymes in the hydrochloric acid perform the chemical digestion part.
i believe mouth also does the same because it technically chemically digests with the enzyme amylase in the saliva but the overall answer is stomach.
What happens to ADP after ATP hydrolysis? It is used to make glucose. It is broken down for energy. It is expelled from the body. It is used to make ATP.
Answers
Answer:
It is used to make glucose
Explanation:
Hope it helps .
Answer:
It is used to make Glucose.
Explanation:
gradpoint
Which one of the following statements best explains why car tyres hore treads?
A To make them look more attractive
B. To increase friction between the car and the road surface
C. To make them look different from the tyres of other cars
D. To decrease friction between the car and the road surface
Answers
Answer:
d
Explanation:
to decrease friction in Wich to make it fast
Select the photosynthetic molecule that gives halobacteria its unique color.
a.) Caratenoids
b.)Thylakoids
c.)Bacteriochlorophylls
d.)Bacteriorhodopsin
Answers
Answer:
Bacteriorhodopsin
Explanation:
Purple Halobacterium species owe their color to bacteriorhodopsin, a light-sensitive protein.
Which stage of the cell cycle happens directly after cytokinesis?
A
mitosis
B
M phase
C
anaphase
D
interphase
Answers
The cell cycle phase that occurs immediately following cytokinesis is the interphase, which is in Option D because the interphase consists of the G1, S, and G2 and is constitutively called the preparatory phase.
What is the cell cycle's importance?The cell cycle consists of the interphase and the division phase, and in the interphase, the cell spends most of the time preparing itself for the cell division and consists of the G1, S, and G2 phases. Following the interphase, the cell enters the division phase, which is mitosis or meiosis, and divides, with the daughter cells potentially entering the cell cycle via the interphase.
Hence, the cell cycle phase that occurs immediately following cytokinesis is the interphase, which is in Option D because the interphase consists of the G1, S, and G2 and is constitutively called the preparatory phase.
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why can't we see the trees and cities from outer space?
Answers
Explanation:
It's the same thing as saying, why can't I see a atom with my bare eye???
The trees and cities are just WAY too small and far away for us to see if we were in outer space.
Answer:
because it's too far away. you can however see some large structures like the great wall of China from space
6. What causes the vast quantity of lava to be forced out of the Icelandic volcanoes during eruptions?
Answers
Explanation:
plumes/columns of hotspots
Remain in the To Scale tab, and keep path visibility on. In the central menu, turn on Gravity Force. Begin a new Planet-Moon simulation. Observe approximately how long it takes for the moon to complete an entire orbit. Pause the simulation and move the moon closer to the planet. What effect did this move have on the gravitational attraction between the two bodies? What effect did this move have on the orbital period?
Answers
Answer:
Moving the bodies closer together increased the gravitational attraction and decreased the orbital period.
Explanation:
edmentum
Answer:
Moving the bodies closer together reduced the orbital period and increased the gravitational attraction.
Explanation:
What type of boundary is this?
Answers
The image represents the continental-continental boundary. When two continental plates collide, that's another kind of convergent plate boundary. The continental lithosphere is very thick and has a low density. The continental lithosphere cannot subduct. So when two mainland plates impact, they simply crush together.
Plate tectonic boundaries come in three varieties: plate boundaries that are transformed, divergent, and convergent. The three primary types of plate boundaries are depicted in this image: transform, convergent and divergent.
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Explain the mechanism of respiration system in toad
Answers
Answer:
The frog has three respiratory surfaces on its body that it uses to exchange gas with the surroundings: the skin, in the lungs and on the lining of the mouth. While completely submerged all of the frog's repiration takes place through the skin.
Explanation:
I hope it helps you
The __________________defines the boundary of the cell and determines the nature of its contact with the environment.
Answers
The plasma membrane defines the boundary of the cell and determines the nature of contact with the environment.
The plasma membrane is the outermost layer of an animal cell. It is composed of peptidoglycan and has a lipid bilayer with proteins embedded in it.
The plasma membrane is also known as cell membrane and is a selectively permeable membrane. It allows certain molecules and solutes to enter into the cell and go outside of the cell whenever necessary.
Plasma membrane plays a vital role in the communication between two consecutive cells as it is selectively permeable. The plasma membrane also maintains the concentration of the cell, by releasing or allowing certain solutes to enter and go out of the cell.
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Relative to a solution with a pH of 7, a solution with a pH of 3 has
of
Select one:
O a. 10,000 times higher H+ concentration
O b. 10,000 times lower H+ concentration
O c. 100 times lower H+ concentration
O d. 100 times greater H+ concentration
O e. the same H+ concentration
Answers
Answer:
10000times higher H+ concentration
Relative to a solution with a pH of 7, a solution with a pH of 3 has of 10,000 times higher H+ concentration. Thus, the correct option is a.
The pH scale is a logarithmic scale that measures the concentration of hydrogen ions (H+) in a solution.
Each unit change in pH represents a tenfold change in H+ concentration.
Consider that each decrease in pH by 1 unit corresponds to a tenfold increase in H+ concentration.
So, going from pH 7 to pH 6 would mean a tenfold increase in H+ concentration, pH 5 would be a hundredfold increase, pH 4 would be a thousandfold increase, and pH 3 would be a ten thousandfold increase.
So, a solution with a pH of 3 has 10,000 times higher H+ concentration compared to a solution with a pH of 7.
Thus, the correct option is a.
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What is the difference between homeostasis and Equilibrium
Answers
Explanation:
Homeostasis is the term use to describe the internal stability needed for survival of an organism, including humans and animals while equilibrium is narrow to specific mechanisms.
it is usually measured in m/s
Answers
Explanation:
The speed of light in vacuum is 299 792 458 meters per second. unit of acceleration is the meter per second per second (m/s2). unit of area is the square meter (m2).
...
Units of Length
10 millimeters (mm) = 1 centimeter (cm)
10 centimeters = 1 decimeter (dm)
10 centimeters = 100 millimeters
10 decimeters = 1 meter (m)
is the spread of certain disease due to the bite of a vector. As used here, the term vector describes insects or animals such as flies, transmitting a disease. Mosquitoes are the most common vectors, and the diseases they transmit include malaria and West Nile Virus.
Answers
Vector-borne diseases are human illnesses caused by parasites, viruses and bacteria that are transmitted by vectors.
Infections known as vector-borne illnesses are those that are spread by the bite of an infected species of arthropod, including mosquitoes, ticks, triatomine bugs, sandflies, and blackflies. Being cold-blooded (ectothermic), arthropod vectors are particularly susceptible to climate influences. Mosquitoes can transmit the Zika virus, West Nile virus, Chikungunya virus, dengue, and malaria to humans. Direct touch, droplets, a vector like a mosquito, a vehicle like food, or the airborne route are all possible modes of transmission.The tick is the most prevalent vector. Mosquitoes are the most prevalent and are the primary carriers of many dangerous illnesses.
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The allele for black fur (B) is dominant to the allele for white fur (b) in rats. If you have a black rat and you want to know it s genotype (whether it is BB or Bb), you could perform a testcross. Please tell me what kind of rat (what color) you would mate your black rat with in a testcross. Explain what results you will get if your unknown black rat is BB, and explain how this differs from the results you will get if your unknown black rat is Bb. How will the results help you to determine the genotype of your black rat?
Answers
honestly
Explanation:
I think it would end up being a black rat since black rats have more power then others.
why cell is considered as the functional unit of life ?give one reason
Answers
Answer:
it is a cingle organism and it lives because it is basically a germ i think
Explanation:
Answer:
I'll give 2 for you to choose from
Explanation:
1. All living things have a cell, whether it prokaryote, a eukaryote.
2. Even though are millions of cells in your body, each one plays big a role in making it function. Whether its your immune system cells or your genetic cells, without them, you literally cant live.
A scientist testing the effects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each orchard is counted. Which of the following variables must be controlled in this experiment?
1. the amount of water that each orchard receives
2. the species of trees in the orchard
3. the number of apples that are produced by each tree
4. the size of each of the orchards
Answers
Answer:
1 and 2
Explanation:
1) The exercise scientist is looking for the effects of a chemical between an apple crop to which it is administered and another to which it is not, 4 options are presented, of which it is essential to count as a variable the amount of water each Orchard and tree species in the orchard, since they can generate alterations in the results, the other two variables of the exercise such as number of apples and size of the orchards are not significant and their variations do not affect the scientist's objective.
What is the optimum temperature range for steelhead trout?
Answers
Answer:
WDOE suggests that the MWMT should not exceed 17-18ºC, and daily maximum temperatures should not exceed 21-22ºC to be fully protective of adult steelhead migration.
Explanation:
Got it off google! Im not smart XDD
what certain molecules are used for nadh in cellular respiration
Answers
NADH is produced during cellular respiration through the oxidation of glucose in glycolysis and the citric acid cycle.
Glucose is broken down into pyruvate in glycolysis, and NAD+ is reduced to NADH. Pyruvate is then converted to acetyl-CoA in the transition reaction, and NAD+ is again reduced to NADH. It produces one NADH molecule per pyruvate molecule.
In the citric acid cycle, acetyl-CoA is oxidized to carbon dioxide, and NAD+ is reduced to NADH. These molecules are used to produce ATP, the energy currency of the cell, through the electron transport chain.
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Negative feeback...?
Answers
Answer:
All answers are correct
Question 1 of 10
Which element of the scientific process includes the greatest amount of
information about living things?
OA. A hypothesis
OB. A theory
OC. A conclusion
OD. A data record
SUBMIT
Answers
According to the research, the correct option is B. A theory is the element of the scientific process that would include the greatest amount of information about living things.
What is a theory?It is a set of ideas or proven hypotheses that explain some phenomenon studied or a scientific description based on a set of observations or experiments.
In this sense, it is a logical system that is established from observations, axioms and postulates, and is formed by the set of concepts, propositions and definitions that are related to each other with the aim of explaining the given phenomenon.
Therefore, we can conclude that according to the research, the correct option is B. A theory is the element of the scientific process that would include the greatest amount of information about living things.
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write down the steps of double fertilization
Answers
Steps of Double Fertilization.
It was discovered by S.G. Nawaschin (1897) Lilium are Fertillaria sps.1. Germination of pollen on stigma :
(i) By absorbing secretion of stigma pollen swells up and outer layer exine ruptures whereas inner lintine comes out in the form of pollen tube.
(ii) Branched polen tube is formed in amentiferae group.
(iii) In families malvaceae, cucurbitaceae, etc. polysiphonous condition (many pollen tubes from a single pollen) is found.
2. Path taken up by pollen tube :
(i) Pollen tube pierces through stigmatic papilla into the tissue of style.
(ii) Filiform apparatus of synergids secrete some chemotropically active substances, which promotes porogamy.
(iii) Obturator (special structure) act as a bridge for growth of pollen tube.
(iv) Cations are naturally occurring chemotropic agents in the pistil.
3. Entry of pollen tube into embryo sac :
(i) It enters into the ovule by either of the two methods; porogamy, chalazogamy or mesogamy.
(ii) Irrespective of the mode of entry of pollen tube into the ovule, the pollen tube always enters into embryo sac at micropylar end (Porogany).
(iii) If enters through chalaza (base) it is termed chalazogany.
(iv) If pierces through integuments, it is called mesogamy.
(v) Tip of pollen tube penetrates embryo sac and reaches egg apparatus.
4. Syngamy (Generative fertilization)
(i) Pollen tube burst as tube nucleus disorganises.
(ii) One of male gametes fuses with egg cell or oosphere.
(iii) Deploid oospore or zygote is formed.
5. Triple fusion (Vegetative fertilization) :
The other gamete fuses with secondary nucleus forming triploid primary endosperm (PEN) which later give rise to endosperm.
Answer:
Double fertilization is a process unique to flowering plants (angiosperms) in which two sperm cells fertilize two different structures within the female reproductive system. The steps of double fertilization are:
Pollination: transfer of pollen grains from the male to the female flowerGermination: the pollen grain forms a pollen tube and grows down the style towards the ovuleSyngamy: the first sperm cell fuses with the egg cell to form a diploid zygote (2n)Endosperm formation: the second sperm cell fuses with two polar nuclei to form a triploid cell (3n) which undergoes cell division to form the endospermEmbryo formation: the zygote undergoes several rounds of cell division and differentiation to form the embryoDouble fertilization leads to the formation of both the embryo and endosperm within the ovule, which ultimately results in the development of a seed.