Nitrogen is an essential component for living cells, as it is involved in synthesis of amino acids and nucleic acids. These amino acids polymerize to form proteins. So the organic macromolecules do living things build using nitrogen is protein and nucleic acids, i.e., option a and d.
What are amino acids?Amino acids are the smallest unit or one can say building block of protein.
It usually have an amino group and a carboxyl group and a side chain. It is linked together by peptide bonds.
As it has an amino group, it requires nitrogen for its formation, and it will ultimately form protein.
Nitrogen is also required for the formation of nucleic acids i.e., DNA and RNA.
Thus, the correct option is a and d.
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3. In science, a theory is more like a scientific law than a hypothesis. A theory
explains a set of observations or events. It must be verified multiple times by
many different scientists. One scientist cannot create a theory on his or her own.
a) Look back at your hypothesis from question 2. Could this hypothesis become
a theory if you repeated your experiment 100 different times and got the same
results? Can a theory be created by just one person? (2 points)
Answer:
No
Explanation:
A theory cannot be made by one person, no matter how many times they repeat the experiment. Therefore, you repeating the experinment does not make it a theory. The experinment must be repeated by others and get same result as you to confirm it as theory.
Buffer zones _______. a. can help regulate the acidity of aquatic ecosystems b. help increase erosion rates c. are set up around natural resource areas d. all of the above please select the best answer from the choices provided a b c d
The main feature of buffer zones is that they are are set up around natural resource areas.
What are buffer zones?Buffer zones are zones in a habitat which are designed to protect sensitive areas such as wetlands, wildlife reserves from negative external pressures.
Buffer zones at set up around natural resource areas.
Therefore, the main feature of buffer zones is that they are are set up around natural resource areas.
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Where does the hydrogen that is used in Stage 2 of photosynthesis come from?
There are two main parts of the human skeleton: the __________ and _________ skeletons.
Answer:
axial skeleton and appendicular skeleton
Using what you have learned from the lesson and the virtual lab activity, answer the following questions in complete sentences.
1. How did the colors of each type of prey affect its population size over time?
2. How do you predict the data would change if you continued? Explain your answer.
3. What traits could help a predator be more "fit" to survive in each environment? Be specific.
4. Describe other adaptations besides color that could affect an individual's survival.
5. Explain what will happen if there are not enough resources to support the individuals in a species.
6. This experiment tested natural selection. What could be another possible mechanism of evolution for the rabbits to evolve? Be specific.
Answer:
Cookies are ok not the best but ok
Explanation:
Select the correct answer from each drop-down menu.
deductive reasoning is one of the two scientific methods used in archaeology.
deductive reasoning is a
"blank"
approach because it generates a hypothesis by working from
generic
concept to
specific
conclusion.
Deductive reasoning is a sort of logical reasoning that starts with a broad concept and comes to a specific conclusion. It is also known as top-down thinking or moving from the general to the specific. Here the blank will be logical approach.
What is Deductive reasoning?Deductive reasoning is a type of deduction that is used in both science and life in general.
It takes place when two true statements, or premises, are combined to form a conclusion.
A is equal to B, for example. B is also the same as C. Using deductive reasoning, one can conclude A is equal to C given those two statements.
It is a type of logical reasoning that begins with a broad concept and progresses to a specific conclusion.
Thus, deductive reasoning is a logical approach.
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A major difference between scientific explanations and commonsense explanations is that scientific explanations are
Answer:
scientific explanations are descriptions that are tested, observed, and backed up with evidence for realities in the natural world.
Lab: exercise and homeostasis lab report
if anyone has done this pls help
ill give brainliest
Introduction:
The question that was trying to be answered in this lab was “How does exercise affect a person’s heart rate, breathing rate, and perspiration level?” Based on this question, the hypothesis that was formed was “If effects of exercise and exercise are related, then exercising will increase heart rate, breathing rate, and perspiration level”.
What is homeostasis?Homeostasis refers to the mechanism of the body to maintain a stable internal environment instead of changes taking place in the external environment.
Homeostasis in the body is maintained through three vital organs, as mentioned before, the kidneys, liver, and brain. These regulate the temperature, iron content in our blood, retention, and production of energy and overall blood composition. This was helpful because the whole lab report was based on homeostasis and the effect that it had on exercise.
Materials and Methods:
1. Materials:
a. People to exercise
b. A clock or stop watch
2. Procedure:
Choose one volunteer to complete jumping jacks at a pace that can be maintained for eight minutes. Make sure the volunteer is inactive for a few minutes before the experiment begins.Measure the heart rate by taking his or her pulse, you can do this one of two ways: Radial Pulse, Carotid PulseMultiply the number of beats in 15 seconds by 4 to calculate the beats per minute. Record the data in the table below the 0 minutes box.Measure the person’s perspiration level from 0 to 5: (0 = none; 5 = droplets dripping down the face). Note this observation in the table. Have the volunteer do jumping jacks for 2 minutes. After 2 minutes, measure the heart rate, breathing rate, and perspiration level (refer to steps 2 through 5), and record the data. Measure the pulse, breathing and perspiration levels as quickly as you can so that the volunteer can resume exercise. Do not have volunteer wait while you do the calculations and enter the data. Repeat step 6 three more times (remember, 2 minutes each at a time, totaling 8 minutes) and record your data at each point. After the final recording of the dependent variables, wait one minute with the volunteer at reset. Then measure all of the variables again. Record this data under the “9 Time (Min.) Box”.Analysis:
There is an increase effect of exercise over time on the circulatory and respiratory systems, as shown in both Table 1 and Table 2. As the students began their exercise in two-minute intervals, their heart rates increased on average from 73 beats per minute to 115 beats per minute. Shawn’s individual heart rate began at 84 beats per minute, and after lifting 5-pound weights for 8 minutes, his heart rate increased to 114 beats per minute . Also, his breathing rate showed an increase from 36 breaths per minute to 44 breaths per minute.
Based on this data shown, the amount that you exercise does effect the circulatory and respiratory systems by causing a, on average, dramatic increase in beats/breath per minute in the measured variables.
Conclusion:
According to the data collected, the hypothesis that was developed at the beginning of the experiment: “If effects of exercise and exercise are related, then exercising will increase heart rate, breathing rate, and perspiration levels”; was accepted . Based on the data shown our individual group charts and the class averages, the effect that exercise has on the respiratory and circulatory systems is that it develops an increase in heart rate (Start: 73/ Finish: 115), breathing rate (Start: 38/ Finish: 56), and perspiration levels (Start: 0/ Finish: 1).
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The trna nucleotide sequence that lines up on the mrna is:.
Answer:
anticodon – a sequence of three nucleotides on a tRNA molecule that bond to a complementary sequence on an mRNA molecule. The anticodon sequence determines the amino acid that the tRNA carries.
A chloroplast produces sugar in its?
help pls:) i need it now
hi, these are the answers
hope it helps!
Explanation:
1)nasal cavity
2)esophagus
3)
4)tuble
5)liver
6)stomach
7)large intestine
8)small intestine
9)intestine
10)small intestine
11)waste out tube
12)identity oxygenated and deoxygenated
13)anus
Biology question! Please help!
In this question we will transcribe DNA to RNA
What is DNA and RNA?It consists of a pentose, a phosphate and has
adenineguaninecytosine and uracil as nitrogenous bases.RNA, unlike DNA, is composed of only one strand and it is produced in the cell nucleus from one of the strands of a DNA molecule. Once ready, the RNA goes to the cell cytoplasm, where it will perform its main function, which is to control protein synthesis.
Table 1
CAC-GUG-GAC-UGA-GGA-CUU-CUC
Table 2CAC-GUG-GAC-UGA-GGA-CAU-CUC
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Organize the parts of this body system in the CORRECT order (starting with organism level) according to the levels of organization in a multicellular organism.
a. human being --> stomach --> stomach lining tissue --> digestive system --> stomach lining cell
b. human being --> digestive system --> stomach --> stomach lining tissue --> stomach lining cell
c. human being --> digestive system --> stomach lining tissue --> stomach -->stomach lining cell
d. human being --> stomach lining tissue --> digestive system --> stomach lining cell --> stomach
According to the levels of organization in a multicellular organism.
human being --> digestive system --> stomach --> stomach lining tissue --> stomach lining cell.
What do you mean my level of organization?LEVEL OF ORGANIZATION:
Living organisms are classified according to hierarchical levels. The hierarchy of the level of organization is as follows:
cell → tissue → organ → organ system → organism
Thus, option "B" human being --> digestive system --> stomach --> stomach lining tissue --> stomach lining cell.
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A genetic change that occurs in a body cell of a mouse will not contribute to the continued genetic diversity of the species because.
Answer:
The genetic material in the germline cells is passed onto offspring, not somatic cells.
Explanation:
A body cell is another terms for somatic cell. Germline cells refer to cells involved in reproduction, like the egg and sperm. During reproduction, only these cells combine to start creating the new life. Therefore, the genetic changes that occur in body cells have no effect on the offspring because the change is not also found in the germline cells. Should there be genetic changes in the germline cells, then these alterations would be present in the offspring.
Which gland is responsible for production of estrogen and ova?.
Answer:
Ovaries
The ovaries are small, oval-shaped glands that are located on either side of the uterus. The ovaries produce eggs and hormones.
What does “adaptation” of populations have to do with the “fitness” of individual organisms in the population?
Answer:
As organisms adapt to changing conditions, they evolve in a way to fit their surrounding environment. According to Darwin's survival of the fittest concept, organisms that can adapt to fluctuating conditions are more fitter and hence selected by nature.
Here fitter means reproductive superiority.
Which of the following non-science subjects is often necessary to prepare for a career in science?
geography
art
history
math
The non-science subjects is often necessary to prepare for a career in science is Math. Option D. This is further explained below.
What is Math?Math is simply defined as the branch of science that studies numbers, forms, and their relationships.
In conclusion, Math is a non-scientific topic that is frequently required to prepare for a career in science.
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Pls helpthe sun hits the ocean at the equator more directly than at the poles. how does this support the flow of currents in the ocean?
The Sun creates a lot of thermal energy in the atmosphere and the oceans. Currents created as warm equatorial waters move to the north carrying heat. Due to this, the cold polar waters go south, and there get heated.
What is thermal energy?Thermal energy refers to the energy within a system and is responsible for its temperature.
The Sun heats up the air at the equator. This air will move toward the poles and cools down there with time.
In this process, the wind that occurs due to air currents will induce currents at the ocean surface.
The currents at this surface are propagated down deeper due to the differences in the forces on different parts of the water.
Thus, It is the main reason that the sun hits the ocean at the equator more directly than at the poles.
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what is it light and how does it travel?
Answer:
Light is both waves and particles, which are described as packets of energy called photons. These waves, or photons, travel in narrow beams called rays. Only when light rays move from one medium to another, such as from air to water, their linear paths altered.
Explanation:
Hope this helps:) Goodluck!
Answer:
is a transactional reflection from a shiny object that travels through carbon monoxide
What is the driving force of the North Equatorial Current in the Atlantic Ocean? What
causes this driving force?
Answer:
The primary driving forces of the surface currents are the thrust by the trade winds and westerlies.
Explanation:
3. A cell with 10 chromosomes undergoes mitosis.
(a) How many daughter cells are created:
Answer:
In a cell with 10 chromosomes undergoes mitosis, the result are 2 daughter cells each with 10 chromosomes
Explanation:
Cells have the ability to reproduce or replicate through 2 processes:
Mitosis
Meiosis
Mitosis differs from meiosis because the final result is always
2 daughter cells
The daughter cells are identical to the mother cell and this includes the same number of chromosomes
This means in mitosis 1 cell with 10 chromosomes leads to two identical cells each with 10 chromosomes.
James Surowiecki's analysis is consistent with the slogan that: A. too many cooks spoil the broth. B. birds of a feather flock together. C. two heads are better than one. D. opposites attract.
James Surowiecki's analysis is consistent with the slogan that two heads are better than one and it is a proverb and there are several acronyms too. Thus, option C is correct.
What is acronym?Acronym has been defined as the short form of long words such as very important person and the acronym of very important person has VIP. The word acronym has been used to denoted the short term of a word in which two or more than two words combined together to form new short word.
Acronym has been always starts with capital latter and the first word's letter is always capital. Capitalization has the most important part of writing as it has the rule of writing that the first latter of the word that starts a sentence must be capital or starts with capital latter.
The sentence has a group of sensible or meaningful word that combines together to form a complete and sense full sentence. The sentence has several type such as positive sentence, negative sentence, exclamatory sentence as well as introgetive sentence.
Therefore, James Surowiecki's analysis is consistent with the slogan that two heads are better than one and it is a proverb and there are several acronyms too. Thus, option C is correct.
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How can optical illusions be best described?
question 2 options:
something that alters the laws of space and time.
something that allows your 3rd eye to see in the 4th dimension.
something that deceives the eye (and brain) by appearing to be other than it is.
something that changes the cones and rods in your eyes.
Optical illusions be best described as: (C). something that deceives the eye (and brain) by appearing to be other than it is.
Meaning of optical IllusionOptical illusion is a visual effect created by a visual system that tends to deceive the brain and the eyes, by making them interpret its appearance different from what it really is.
Optical illusion tends to seem as though its moving but its just still. The interprets the signal from the eyes wrongly.
In conclusion, Optical illusions be best described as: something that deceives the eye (and brain) by appearing to be other than it is.
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Outline the average female reproductive cycle (note that this is distinct from the menstrual cycle), in particular noting when ovulation occurs, when estrogen peaks, when progesterone peaks, and the approximate time span when a woman would be most fertile. Physiologically, why does this cycle change when a woman ages (around 50 years old or so)?
The menstrual cycle are menstruation, have the follicular phase, ovulation and the luteal phase.
Explain menstrual problems?Common menstrual problems have heavy or sore periods and premenstrual syndrome (PMS).
When in the menstrual cycle a woman is Considered as likely to conceive can improve the possibility of pregnancy.
Thus, have the follicular phase, ovulation and the luteal phase.
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3. What do you think most public water is used for?
Answer:
The Earth might seem like it has abundant water, but in fact less than 1 percent is available for human use. The rest is either salt water found in oceans, fresh water frozen in the polar ice caps, or too inaccessible for practical usage. While population and demand on freshwater resources are increasing, supply will always remain constant. And although it's true that the water cycle continuously returns water to Earth, it is not always returned to the same place, or in the same quantity and quality.
Which compound can only be made if it has access to magnesium ions?
Answer:
Hope it helps
Explanation:
Green plants absorb light in their leaves and convert it to energy by photosynthesis. Temperature, carbon dioxide concentration and light intensity can affect the rate of photosynthesis.Plants need minerals for healthy growth. They are absorbed through the roots by active transport as mineral ions dissolved in the soil water.Magnesium ions and nitrate ions are needed by plants. A plant will not grow well if it cannot get enough of these ions, and it will show symptoms of mineral deficiency. Fertilisers are used to replace minerals used by plants.
Nitrogen fertilisers - such as ammonium nitrate and ammonium phosphate - provide plants with water-soluble sources of nitrogen that they can absorb through their roots. They allow farmers to increase the yield and quality of their crops. However, overuse can cause problems. Eutrophication happens when excess nitrate (or phosphate) enters rivers or lakes from fields. This can lead to the death of fish and other aquatic animals.
Which force most likely created this mountain?
compression
gravity
shearing
tension
Answer: Compression
Explanation: got it right on edge
2. Sends blood to the lung.
Which chamber?
Answer:
right ventricle
Explanation:
Which best explains why it is difficult to classify protists?
O They are all so much like one another.
• There is a lot of diversity
between the organisms.
O They
do not have anything in
common with other organisms.
O They have structures that are hard to observe.
Answer:
There is a lot of diversity between the organisms.
hope it helps!
In most cases, bioluminescence is useful for:
attracting prey
producing oxygen
supporting plant life
navigating dark waters

Answer:
Attracting prey
Explanation:
Rule out other answers.
Plants in dark water already are adapted.
If a fish such as an angler fish lives in dark waters then there would not be a need to create light to see because then they could just live in a different part of the ocean.
Light doesn't create oxygen.
