CHAPTER ONE THE CHEMICAL COMPONENTS OF THE CELL Biology Form Three Student Book
1. What is the percentage by mass of oxygen, carbon, hydrogen, nitrogen,
phosphorus and sulfur in the earth and in the human body? What do you
observe?
(MB
2. Which elements have a higher percentage in the nature and in the human
body? State some compounds that contain these elements in their struc-
ture.
3. Many chemical substances enter the structure of the of the cell. In your
opinion, what is the importance of these substances? Why have you select-
ed these substances?
4. There are other elements that exist in a fewer percentage, search these
elements and state the percentage abundance of each in the cells of living
organisms.​

Answers

Answer 1
1. Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.
2. The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you.

Related Questions

An amino acid's unique characteristics is defined by the ________.

Answers

an amino acids unique characteristics is defined by the R-group

1. Name four important biogeochemical processes that cycle matter.

Answers

Explanation:

water cycle

carbon cycle

nitrogen cycle

phosphorous cycle 

What are TWO issues with living in space that need to be addressed by scientists and how are they addressed?​

Answers

The environment of space is lethal without appropriate protection: the greatest threat in the vacuum of space derives from the lack of oxygen and pressure, although temperature and radiation also pose risks. The effects of space exposure can result in ebullism, hypoxia, hypocapnia, and decompression sickness.

A student astronomer went outside and made two observations of the Moon that were several days apart. Her observations are shown in the diagram above. The light part of the Moon appeared to get smaller over time. Why did this happen?

Answers

Answer:

The light part of the Moon appeared to get smaller over time because of the change in the relative position of the Moon, the Sun, and the Earth. This is known as the lunar phase. The changing appearance of the Moon from the Earth's perspective is caused by the Moon's orbit around the Earth and the position of the Moon and Sun relative to the Earth. The Moon's phases are caused by the angle between the Moon, Earth, and Sun changing, as the Moon orbits the Earth. When the Moon is between the Earth and the Sun, the side facing the Earth is not illuminated by sunlight, so it appears dark, and this is called a new moon. When the Moon is on the opposite side of the Earth from the Sun, the entire side of the Moon facing the Earth is illuminated by sunlight, so it appears full, and this is called a full moon. As the Moon moves in its orbit, the angle between the Sun, Earth, and Moon changes, causing the illuminated portion of the Moon visible from the Earth to change, leading to different lunar phases.

Compare the digestive body system of humans to the digestive body system of frogs.

Answers

The digestive system is made of the organs that take in foods and liquids, breaking them down into substances that will be used by the body to grow, repair tissue and get energy. Frogs and humans digestive systems have lots of similarities, such as the organs involved and their function. But there are differences too. Frogs has two sets of teeth and they does not have strong teeth like humans, their tongue is attached to a different place than the human's tongue, they have a shorter small intestine than us as well and they also have a cloaca (that humans doesn't have) used for eliminating undigested solid and liquid wastes.

NEED HELPP ASAP
Which of these is the best explanation for why the rock on the ocean floor and the rock on the continent are
NOT the same age?
There has been a lot of erosion on the continent and the older rock has been washed away.
There has been a lot of erosion on the ocean floor and the older rock has washed away.
Due to the movement of the plates, the rocks that make up the ocean floor are pulled inside the earth
more often and are much younger.

Answers

Answer:The continental crust is less dense so the oceanic crust subducts back to the mantle. This process explains why the younger rocks are found on the ocean floor. 24.

Explanation:

Earth is the center of the universe and everything revolves around it A) science B) Pseudoscience

Answers

Answer:

The correct answer is - option B. peseudoscience.

Explanation:

Earth is the center of the universe and everything revolves around the earth is a theory known as geocentrism which is presented by the Ptolemy for the first time.

However, this theory is not based on true facts and logic and it is believed by the scientists, and environmentalists on the basis of observation that we are the only planet where life existed and half of the stars above the horizon and half the stars are below the horizon.

(HELP FAST) A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right as: 1, 2, 3, 4, and 5. There is one vertical line between each of the consecutive five dots. The lines are labeled from left to right as Perch, Frog, Pigeon, Rats, and Human. A text box below the branching tree diagram is labeled Derived Shared Characteristics. In the box it says from left to right Terrestrial during all stages, Jaws, Walking on two legs, Mammary glands and hair, and Four limbs.

Look at the possible derived shared characteristics, shown in the text box. Think about where these should be placed along the branching tree diagram. Where in the branching tree would you most likely write "lives on land during all life stages"? Explain your answer.

Answers

"The derived shared characteristic 'Terrestrial during all stages' should be placed at the base of the tree diagram."

SupThe characteristic "Terrestrial during all stages" is a shared characteristic among all five species being compared in the branching tree diagram. This means that it is a characteristic that all of these species have in common, and therefore it is likely that it was present in their common ancestor.

Since the base of the tree represents the common ancestor of the species being compared, it makes sense to place this characteristic at the base of the tree. This also helps to show that this characteristic is a defining trait of the group of species being compared and that it has been present in their lineage since their common ancestor.

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There are three sources of genetic variation in sexual reproduction. Determine which of the following statements accurately describes which of these are considered random and which are not

Answers

Genetic recombination and independent assortment are considered random sources of genetic variation, while mutations can occur randomly or due to specific factors.

In sexual reproduction, the three sources of genetic variation are genetic recombination, independent assortment, and random mutations. Among these sources, genetic recombination and independent assortment are considered random processes, while mutations are not entirely random.Genetic recombination occurs during meiosis when homologous chromosomes exchange genetic material through crossing over. This process is considered random as the precise locations where recombination events occur are unpredictable.Independent assortment refers to the random alignment and separation of homologous chromosomes during meiosis I. The random positioning of maternal and paternal chromosomes contributes to genetic diversity in offspring.On the other hand, mutations are not entirely random as they can be influenced by various factors such as exposure to mutagens or errors in DNA replication. However, the specific mutations that occur at particular loci are generally considered random events.Therefore, the accurate statement would be that genetic recombination and independent assortment are considered random sources of genetic variation, while mutations are influenced by both random and non-random factors.

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is it important to have circulatory system for single cell or multicellular organism?

Answers

It’s more important for a multicellular organism. This is because unicellular organism do not have specialized organs like the respiratory system. They obtain resources like oxygen through a process of diffusion.

Why are scientists concerned about the use of the Bt toxin, which is used to kill insects, in genetic engineering?

Answers

It’s because they might not want insects to die.

They might need them for some work

E.g

Bees are used to make honey

how many characteristics of life the rabbit displaying?​

Answers

Characteristics of life the rabbit displaying regardless of their gender or breed type, rabbits can be silly, timid, shy, curious, and high spirits.

Regardless of their gender or breed, rabbits can be silly, timid, shy, inquisitive, and lively. You must comprehend your rabbit's wants if you want to maintain them healthy and content throughout their life. Many domestic rabbits can live up to 12 years old, and the majority of them can easily reach the age of 8 years.

Rabbits are excellent indoor pets. They can be trained to go in the home, are affectionate, and naturally clean. Although it's a misconception that house rabbits are low-maintenance pets, they actually need a lot of care and attention. Rabbits are gregarious and inquisitive creatures that make wonderful pets.

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Question 6 Q
The presence of tiny hairs, called setae, on the toe pads of some geckos is associated with the ability to adhere to smooth surfaces. This ability allows geckos to climb in areas where many predators cannot. Scientists
studying the evolution of setae have identified three closely related species of gecko, only one of which can adhere to smooth surfaces. A model of the evolutionary relatedness between these species is represented in the
figure.
G. humeralis
D
OG. concinnatus
OG. antillensis
Can adhere
O Cannot adhere
Which of the following best describes how the ability to adhere to smooth surfaces affects the fitness of G. humeralis?
The ability to adhere to smooth surfaces is likely to decrease the fitness of G. humeralis because the ability decreases the likelihood of predation
The ability to adhere to smooth surfaces is likely to decrease the fitness of G. humeralis because the ability increases the likelihood of predation.
The ability to adhere to smooth surfaces is likely to increase the fitness of G. humeralis because the ability decreases the likelihood of predation.
The ability to adhere to smooth surfaces is likely to increase the fitness of G. humeralis because the ability increases the likelihood of predation.

Answers

The ability to adhere to smooth surfaces is likely to increase the fitness of G. humeralis because the ability decreases the likelihood of predation. Therefore, option C is correct.

What are setae?

A stiff hair, bristle, or bristlelike process or part of an organism. Setae on the bodies of spiders are used as sensory organs, while setae on the bodies of many polychaete worms, such as earthworms, are used for locomotion.

Thus, the ability to adhere to smooth surfaces is likely to increase the fitness of G. humeralis because the ability decreases the likelihood of predation. Therefore, option C is correct.

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What 3 make up a nucleotide??

What 3 make up a nucleotide??

Answers

Answer:

the correct answer is B

Explanation:

What 3 make up a nucleotide??

Pikas grow thick fur in winter, and their small bodies conserve heat. Kangaroo rats
do not sweat, and oily fur helps them conserve moisture. They get water from seeds.
Predict what would happen if a pika and a kangaroo rat switched environments.

Answers

If a pika and a kangaroo rat switched environments, they might not survive for long due to their unique adaptations to their particular environments.

A pika's adaptation to its habitat includes growing thick fur in winter to conserve heat. In contrast, the desert environment where the kangaroo rat lives is very hot and dry; therefore, its oily fur helps to conserve moisture rather than heat. The pika's thick fur would make it too hot in the desert environment, whereas the kangaroo rat's oily fur would not be sufficient to conserve moisture in the colder environment.

Additionally, pikas get their water from consuming snow whereas kangaroo rats get water from seeds. In a colder environment, snow is readily available, but in the desert, there is no snow. The kangaroo rats might not be able to survive in colder environments if they do not have access to water, and the pika might not be able to survive in the desert without access to snow.

Therefore, it is likely that the adaptations that allowed the pika and the kangaroo rat to survive in their respective environments would make it difficult for them to survive if they were to switch habitats.

NaOH to pure water. It releases OH: NaOH is a_____ and the pH will_____.

Answers

NaOH to pure water. It releases OH: NaOH is a base and the pH will increase.

As part of your homework, you are asked to summarize the chapter you read.
What should you do?

A. Describe all of the details from the chapter.

B. Draw out the scenes from the chapter.

C. Predict what you will read about in the next chapter.

D. State the main point of the chapter in a few sentences.

Answers

Answer:

state the main points of the chapter in a few sentences

Answer:

D. State the main point of the chapter in a few sentences.

Explanation:

Female African elephants are, on average, 7 - 9 feet tall. What is the upper end of this range in centimeters?
Note that 1 in. = 2.54 cm, 100 cm = 1 meter and 12 in. = 1 ft.

Answers

9 feet = 274.32 centimeters

How does exercise build muscles?

Answers

Answer:

Exercise builds and strengthens muscles, which can protect the bones from injury, and support and protect joints affected by arthritis. Strong muscles also give stability and improve balance and coordination. Exercise also improves blood supply to the muscles and increases their capacity to use oxygen

Hope this helped!

Describe the relevant structure of the tissues

Answers

Answer:

Tissues are groups of cells that work together to perform a specific function. The structure of tissues can vary depending on their function, but there are some general features that are common to many tissues.

Chemical synthesis of peptides by the Merrifield method:_______.
a. has a practical upper limit of a polymer of about 500 amino acid residues.
b. involves synthesizing the peptide and then attaching it to a solid support.
c. is nearly as efficient as peptide bond synthesis in biochemical systems.
d. proceeds from the carboxyl terminus to the amino terminus.

Answers

Answer:

b. involves synthesizing the peptide and then attaching it to a solid support

the amino acid is reacted with a molecule known as a "linkage agent" that enables it to attach to a solid polymer, and the other end of the linkage agent is reacted with the polymer support (insoluble)

Design and organise learning experiences according to your local circumstances when teaching Processing (including traditional processing of raw materials; metal processing; food processing)​

Answers

When teaching Processing, it is essential to design and organize learning experiences that align with local circumstances and provide practical applications.

Here is a suggested approach for teaching Processing, including traditional processing of raw materials, metal processing, and food processing, considering local circumstances:

1. Introduction and Contextualization:

Start by introducing the concept of processing and its importance in various industries. Provide examples of local raw materials, metals, and food products that undergo processing. Discuss the significance of processing in the local economy and its impact on society.

2. Field Trips and Industry Visits:

Arrange field trips to local processing facilities such as factories, mills, or food processing plants. These visits offer students firsthand exposure to different processing techniques and machinery. Encourage students to observe and interact with professionals in the field, asking questions and understanding the practical aspects of processing.

3. Hands-on Workshops:

Organize hands-on workshops where students can engage in practical activities related to processing. For example, set up a metalworking workshop where students can learn basic metal processing techniques like cutting, shaping, and welding. Provide guidance on safety measures and proper tool usage.

4. Local Case Studies:

Explore local case studies of successful processing businesses or initiatives. This could involve inviting guest speakers from local processing companies or inviting entrepreneurs who have started their own processing ventures. Students can learn about the challenges, opportunities, and sustainable practices in the local processing industry.

5. Project-Based Learning:

Assign project-based tasks that allow students to apply their knowledge of processing. For example, students could design and develop a prototype for a food processing machine or propose innovative methods to improve traditional processing techniques using local resources. Encourage creativity, critical thinking, and problem-solving skills throughout the project.

6. Community Engagement:

Encourage students to engage with the local community by organizing outreach programs related to processing. This could involve organizing workshops for local artisans or collaborating with local farmers to develop value-added food products. Such activities foster a sense of social responsibility and provide students with real-world experiences.

7. Assessment and Reflection:

Regularly assess student understanding through quizzes, assignments, and presentations. Encourage reflective practices where students can evaluate their own learning journey and identify areas for improvement. Incorporate feedback mechanisms to continuously enhance the learning experiences.

By designing learning experiences that incorporate field trips, hands-on workshops, local case studies, project-based learning, community engagement, and reflective practices, students will develop a holistic understanding of processing and its significance in their local context. This approach will equip them with practical skills, foster creativity, and promote an entrepreneurial mindset, preparing them for future opportunities in the processing industry.

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Suppose a scientist has collected data through a scientific investigation. How
could the scientist use the data to draw a conclusion?
A. By comparing popular methods used by other scientists to collect
data
B. By identifying and reporting only the data that support the
investigation's hypothesis
OC. By repeating the investigation using different tools to find out
whether the results change
D. By thinking critically and logically about possible explanations for
the data

Answers

B. By identifying and reporting only the data that support the investigation's hypothesis.

Scientists have to draw a conclusion by identifying and reporting only the data that support the investigation's hypothesis.

A scientist will follow the scientific method described in the steps below when conducting scientific research in order to conduct the study:

Prepare a hypothesis by asking a question.Test a hypothesis or conduct an investigation.Organize, represent, and analyze information.Analyze the results.Analyze the data and draw conclusions.

A scientist may be able to draw a conclusion based on the data he or she has gathered and interpreted. The conclusion of the investigation must be supported by the evidence that has been gathered during the investigation, such as data and observations. A conclusion may explain the causes and effects of the events that occurred during the course of the investigation by explaining what caused them.

Hope this helps :)

Answer:

D. By thinking critically and logically about possible explanations for

the data.

Explanation:

It was not B. :(

I’m stumped anyone know 4 metamorphosis facts?

Answers

Answer:

Insects that have complete metamorphosis have four life stagesInsects going through their immature stage are called larvaeInsects then enter an inactive state called pupa, or chrysalis. Whilst inside the pupa, the insect will excrete digestive juices, to destroy much of the larva’s body, leaving a few cells intact.In the final stage of the metamorphosis, the insect finally breaks through the pupa emerging as a full adult

Explanation:

Joseph said that 0.029 can be written as 20_100 is he correct? ExplY

Answers

This statement is not be correct. 0.029 coverted to percentage out of 100 would be 2.9% not 20.

The equation AU = Q - W describes which one of the following?
O A. Second law of thermodynamics
O B. Efficiency of a heat engine
O C. Work done by a gas
O D. First law of thermodynamics
SUBMI

Answers

Answer:

D. First law of thermodynamics

Explanation:

The first law of thermodynamics refers that energy can be tranferred or changed form one form to another but it can neither be destroyed nor be created. hence, it is also known as law of conservation of energy.

The equation  ΔU = Q − W describes the first law of thermodynamics.

Where

U is the internl energy of the system.                                  ΔU is the change in U.                                                          Q refers to the total heat supplied into the system (include both addition and release of energy in the system).               W is the net work done by the system.

Hence, the correct option is D.

Answer:

Option D, First law of thermodynamics

Explanation:

The first law of thermodynamics states the following -

\(dU = Q-W\)

where dU  represents the Heat added to the System

Q represents the Change in Internal Energy OR net heat transfer OR sum of all heat transferred into and out of the system

W represents the Work done on the system

The first law of thermodynamics is based on the application of the conservation of energy principle to heat and thermodynamic.  

hence, option D is correct

ONLY ANSWER IF YOU KNOW!! NO SPAMS :)

ONLY ANSWER IF YOU KNOW!! NO SPAMS :)

Answers

Answer:

The answer is Mycellium.

Explanation:

Hope this helps! :)

Answer:

D

Explanation:

I'm pretty sure this is the answer

(Love your pfp btw)

Which of the following is a living organism?
Å virus
A piece of wood
A stone
0 0
A tree

Answers

Answer:

The answer to this question is Tree

Match each type of mutation with the correct chemical sequence for ACGT 1. A-C-G-G-T 2. C-GT 3. A-GC-T duplication, deletion, reordering ​

Answers

Answer:

1. A-C-G-G-T is duplication.

2. C-G-T is deletion.

3. A-G-C-T is reordering.

Explanation:

Your original sequence is ACGT. You compare the original sequence to the 3 mutations.

1. There 2 G's now, which means that the G has been duplicated.

2. The A is now gone in the front of the sequence.

3. The C and G were switched.

Arrange the events of the earliest stellar formation in sequential order.
Hydrogen atoms shed their electrons and fuse together to form larger helium atoms.
Pockets of elements in higher concentrations begin experiencing greater gravitational force.
The big bang occurs.
Hydrogen and helium disperse into the universe in uneven concentrations.
The temperature of gas clouds surpasses 14 million Kelvin.
The gas clouds begin reducing in volume, which leads to increases in density, pressure, and temperature.

Answers

The events of the earliest stellar formation in sequential order are as listed below:

"The big bang occurs.""Pockets of elements in higher concentrations begin experiencing greater gravitational force.""Hydrogen atoms shed their electrons and fuse together to form larger helium atoms.""Hydrogen and helium disperse into the universe in uneven concentrations.""The gas clouds begin reducing in volume, which leads to increases in density, pressure, and temperature."The temperature of gas clouds surpasses 14 million Kelvin.

What is the stellar formation?

The stellar formation can be defined as a process through which dense regions within molecular clouds of gas and dust in interstellar space collapse due to gravity and form stars.

What is a star?

A star can be defined as a giant astronomical object that contains a luminous sphere of plasma and two (2) main hot gases (hydrogen and helium), and it is bounded together by its own gravitational force (gravity).

In conclusion, the earliest event of the stellar formation is that the big bang occurs while the final event is an increase in temperature of gas clouds, which generally surpasses 14 million Kelvin (14,000,000 K).

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Other Questions
help then you got them brains! When a candle burns it produced 41,300 Joules per 1 gram. Use dimensional analysis to convert this to Calories per pound.1 cal = 4.184 J16 ounces = 1 pound1 ounce = 23.5 grams1 Calorie= 1000 calories CAN I GET HELP PLEASE TYSM GET POINTS What is the axis of symmetry for the function f(x)=7-4x+x^2 your organization runs a hyper-v hypervisor on windows server 2016 that hosts several windows server 2016 virtual domain controllers. you want to add an additional virtual domain controller. instead of installing a new windows server 2016 Which of the following theorems deals with the two triangles whose two corresponding sides are congruent and whose included angle are unequal?A. SAS Inequality TheoremB. SSS Inequality TheoremC. Angle-Side Relationship TheoremD. Exterior Nagle Inequality Theorem Find a 2 x 2-matrix. A whose eigenvalues are 2 and 1 eigenvectors are: D = 10] corresponding to the eigenvalue 2, and 2 22 corresponding to the eigenvalue 1. 3 What group of people did not come from Spain to settle in Latin America?conquistadoressettlersscientistsmissionaries A taxpayer who completes a 2022 return and who answers "Yes" to the FBAR question on Schedule B is required to complete FinCEN Form 114 by what date?April 18, 2023.June 30, 2023.October 15, 2023.December 31, 2023 The ring rotor of the 1.100 V, 50 Hz delta connected induction motor is star connected. The voltage conversion ratio is 3.8. The rotor resistance and steady-state leakage flux reactance are 0.012 ohms and 0.250 ohms, respectively. Neglecting the stator impedance and magnetic circuit currents,a) Draw the equivalent circuit for the given case,b) The rotor starting current when the rotor windings are short-circuited from the star point,c) rotor power factor in starting state,d) Rotor current for slip 4% when rotor windings are short-circuited from star point,e) rotor power factor for 4% slip,f) Calculate the resistance value that must be connected to the rotor rings in order to draw 100 A per phase at the time of starting from the line feeding the stator. what is altenation of genration QUESTION 1 The Purchasing Department often wasted time going back to company's managers who gave them order forms which could not be used for some reason or another. So they recorded the problems over The ___________________________ provides a conceptual framework for the types and amounts of foods that make up a healthful diet. Vhich inequality is true? Use the number line to help. -5-4 1 1 2 3 0 1522- 05303 02:5> -1.5 What are the global implications of a ban on Russian oil imports ? Does this benefit or hurt the global economic recovery after the pandemic? can somone please help me A recipe requires cup of oil for every cup of water. How much oil (in cups) is needed per cup of water? Work out the speed of a vehicle that travelled 60meters in 20 seconds. Using speed distance and time What is the estimated product of 8.78 and 12.356 as a whole number Find equation of a parallel line and the given points. Write the equation in slope-intercept form Line y=3x+4 point (2,5)