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

When a bat is hibernating, how fast does its heart pump?

Answers

Answer:

20 beats per minute

Explanation:

Answer:20 beats

Explanation:bat's heart rate slows to only 20 heartbeats per minute.

Answer this question please​

Answers

Answer:

Any animal that is not a equine, tapir, or rhino.

Explanation:

There are 3 extant families of odd toed ungulates:

Equidae (horses, donkeys, zebras etc)Rhinocerotidae (rhinoceroses) Tapiridae (tapirs).

If the animal isn't in one of those families, it isn't an odd toed ungulate.

Result of mechanical weathering or chemical weathering

Answers

Answer:

yea the above one is correct

the chromosomal hereditary material is packaged in this organelle in eukaryotic cells but not in prokaryoitc cells. This organelle is called

Answers

Answer:

Nucleus

Explanation:

The correct answer would be the nucleus.

The nucleus is a double membrane organelle that is found in all eukaryotic cells but not in prokaryotic cells. It contains the chromosomal hereditary material of eukaryotic cells and serves as the control center of the cell where other cellular activities are dictated.

The chromosomal hereditary materials of prokaryotic cells lie freely within the cytoplasm unlike what is obtainable in eukaryotic cells. The materials are package in a condensed fashion within the eukaryotic nucleus to form a structure known as chromatin. During cell division, the chromatin decondenses and become visible under the microscope as chromosomes.


Plants and animals are multicellular organisms made of organ systems that work together to maintain homeostasis. Body systems
are made of organs and organs are composed of tissue. Tissues are groups of cells that work together to perform functions.
Examine each of the examples below. Which of these are organs found in plants or animals? Select ALL that apply.
A
A
)
epithelial
B)
eye
leaf
D)
stem
vascular

Answers

D) stem vascular and A

The organs found in plants or animals is stem vascular. Therefore, option (D) is correct.

What are the features of the stem vascular?

A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, stores nutrients.

The vascular system of plants, complete with xylem and phloem, fills both purposes. Stems, along with roots, also store food for the plant. Pith, a tissue that lies in the center of the stem.

A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in the stem, which exists in two forms: xylem and phloem.

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Explain how an HAB outbreak can have a devastating economic
impact

Answers

Hab or Hiv outbreak cuz lowkey i think both would be bad

Which is a reason why wetlands are important?
O They move water to higher ground during flooding.
O They filter pollutants out of water.
O They are estuaries.
O They provide minerals.

Answers

Answer:

They are estuaries

Explanation:

The answer is c They are estuaries

Is the chief justice of the supreme court the commander in chief of the military

Answers

No , The Chief Justice of the Supreme Court is not the Commander in Chief of the Military .

How do hormonal contraceptives (usually) work? Check all that apply.
freating a barrier
so that the sperm
cell do not enter
the uterus
inhibiting the
sperms' ability to
"swim"
thicken the
cervical mucus
reducing the inner
lining of the
uterue; egg cell
cannot attach
preventing the
maturing of the
follicle cells in the
ovaries
Select all
that apply
SUBMIT -
Musio
12
W2021
BAHO LORUS

Answers

Answer:yes and no there is no context just yes

Explanation:

A 10 N force and a 15 N force are acting on a box in opposite directions what edition force must be added to produce equilibrium

Answers

Answer:

5N of force acting the same way as the 10N of force to make it 15N of force

Explanation:

difference between trychocysts and nematocysts​

Answers

Answer:

trichocyst is a threadlike organ in certain protozoans that can be discharged suddenly in order to grasp or sting while nematocyst is (biology) a capsule, in certain cnidarians, containing a barbed, threadlike tube that delivers a paralyzing sting.

Explanation:

I need help with this question

Answers

Answer:

Plz mark brainliest ;)

Explanation:

Lysosomes break down macromolecules into their constituent parts, which are then recycled. These membrane-bound organelles contain a variety of enzymes called hydrolases that can digest proteins, nucleic acids, lipids, and complex sugars.

How did the mass extinction that killed the dinosaurs affect the evolution of mammals?

Answers

Answer:

With dinosaurs no longer eating them, mammals made quick evolutionary strides, assuming new forms and lifestyles and taking over ecological niches vacated by extinct competitors. ... Sixteen mammal species were discovered, with skulls and other bones fossilized after being buried in rivers and floodplains.

Explanation:

The RNA product of the genetic code above has the sequence ____________ . It binds to the small subunit of the ____________ . It is joined by the large subunit, completing the initiation stage of the process of ____________ .

Answers

The Genetic code was not given, however, The genetic code associated with this question is as follows:

ACCGCTTGCCGCAAT

Answer:

The correct answer is - UGGCGAACGGCGUUA, ribosome,  translation.

Explanation:

The translation is the second process of protein synthesis followed by transcription. Transcription produces mRNA sequence from DNA gene sequence and bring it to the cytoplasm for translation to take place.

The gene segment ACCGCTTGCCGCAAT is encoded to mRNA sequence by converting bases to their complementary bases A to U and C to G and G to C and T to A so the new code will be - UGGACGAACGGUGUUA.

This mRNA binds with a small subunit of ribosomes and then a large subunit of ribosome joined and completes the first stage initiation of the translation.

Explain the role of PERISTALSIS during your food’s time in the esophagus as it travels to the stomach.

Answers

Peristalsis helps in storing food, breaking down food down and mixing it with juices secreted by stomach lining. Peristalsis in stomach helps in partial digestion of food called chyme.

Snake venom contains a mixture of enzymes, which include phospholipase that break down cell membranes, proteinases that destroy proteins, as well as amino acid oxidases and nucleotidases that break down the monomers for protein and DNA synthesis, which is why they can be so deadly. If you were bitten by a venomous snake you may be treated with an antivenom. In addition to antibodies that help your immune system recognize and fight the foreign molecules, what else does the antivenom most likely contain

Answers

Answer:

The correct answer is - Venom enzyme inhibitors.

Explanation:

The snake venoms are the complex mixtures of phospholipase A2s, disintegrins, serine proteases, C-lectins, and metalloproteases, and others. The snake venom phospholipase A2s (svPLA2s) enzymes found in most of the families of venomous snakes that cause anticoagulant effects, cardiotoxicity, neurotoxicity, and cytotoxicity, and other effects.

In antivenom, there are Venom enzyme inhibitors other than antibodies that help in neutralizing these enzymes by weakening or inhibiting these toxic actions.

What happens to a population when immigration increases?
A. The population size usually increases.
B. The emigration rate usually increases.
O C. The emigration rate usually decreases.
O D. The population size usually decreases.

Answers

Answer:d

Explanation:

When immigration increases, the population size usually increases, as shown in Option A, as immigration is the movement of individuals into a population from another population.

What is immigration?

Immigration is the movement of individuals from one population to another. It involves the addition of new individuals to the population, which can increase its size. When more individuals enter a population, they bring with them new genes and genetic diversity, which can enhance the adaptive potential of the population. This can help the population better withstand environmental challenges and increase their chances of survival, but increased immigration can also have negative consequences. For example, it can lead to competition for resources among individuals, which can lead to a decrease in the quality and availability of resources for the population as a whole.

Hence, when immigration increases, the population size usually increases, as shown in Option A.

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which occurs during transition ?

Answers

There is no pic added in the question. I could have helped you.

What things do plants use to get food matter?




HELP ASAP​

Answers

Answer:

water and sunlight (for sure)

Answer:

Plants are called producers because they make their own food

Explanation:

Plants use minerals and water from the ground and their leaves absorb Carbon Dioxide (CO2) from the air.They convert these into food by using sunlight

Hope this Helped :)

Choose the statement about renewable and nonrenewable energy sources that is NOT true.

a. Renewable energy creates little or no waste and has few negative environmental impacts.
b. There has been little to no recent growth in renewable energy use due to a lack of environmental concerns with the use of fossil fuels.
c. Most nonrenewable energy sources can be renewed, but it takes thousands to millions of years for them to form.
d. New technologies promise future increases in the use of renewable energy sources.

Answers

Answer:

b. There has been little to no recent growth in renewable energy use due to a lack of environmental concerns with the use of fossil fuels.

Explanation:

Fossil fuels have had tremendous negative impacts on the environment and humans as well. For that reason, the use of renewable sources of energy, such as hydropower and biomass, have become increasingly popular over the last few decades.

Within our lives, or possibly within many, many lifetimes, the sources of non-renewable energy will run out or cease to exist. The three main fossil fuels that are used as non-renewable energy sources are coal, oil, and natural gas. Carbon is the main element in fossil fuels. Thus, option B is correct.

What best define about nonrenewable energy sources?

Fossil fuels have had a terrible impact on both the environment and people. Because of this, the usage of renewable energy sources, such as biomass and hydropower, has risen in popularity over the past few decades.

A natural resource is classified as non-renewable (also known as finite) if it cannot be easily replenished by natural processes at a rate fast enough to keep up with use. Carbon-based fossil fuels are one illustration. The original biological substance can change into a fuel like gas or oil thanks to heat and pressure.

Therefore, There has been little to no recent growth in renewable energy use due to a lack of environmental concerns with the use of fossil fuels.

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Eubacteria and archaebacteria differ in the process of protein synthesis. What is the difference?

A.) phenylalanine is added as the first amino acid during protein synthesis

B.) Methionine is added as the first amino acid during protein synthesis

C.) Formyl-methionine is added as the first amino acid during protein synthesis

D.) Glutamic acid is added as the first amino acid during protein synthesis

Answers

Answer:

A

Explanation:

The main difference between Archaebacteria and Eubacteria is? Hint: Archaebacteria are called ancient bacteria whereas eubacteria are called true bacteria. Unlike eubacteria, archaebacteria can survive in extreme conditions

Sickle cell anaemia is an inherited autosomal recessive
condition caused by a mutation in the haemoglobin
subunit beta (HBB) gene. A male and female who are
phenotypically normal, discover through genetic testing
that they are both carriers of a HBB mutant allele. What is
the probability that their first child will be biologically
female and phenotypically normal?

Answers

Answer:

1/8 (12.5%)

Explanation:

An autosomal recessive disease is an inherited disease in which an individual need to receive both defective alleles at the same gene locus to be expressed in the phenotype. In this case, both parents are carriers of the recessive mutant allele associated with the sickle cell anaemia trait, thereby both parents are heterozygous, ie., each parent has one copy of the normal allele 'H' and one copy of the defective mutant allele 'h' associated with this condition. In consequence, their first child has a 1/4 (25%) chance of having sickle-cell anaemia. Moreover, the chance of having a girl is 1/2 and the chance of having a boy is 1/2, thereby the final chance of having a girl sickle cell anaemia individual is 1/4 x 1/2 = 1/8 (12.5%).

- Parental cross for sickle cell anaemia trait = Hh x Hh >>

- F1 = 1/4 HH (normal); 1/2 Hh (normal); 1/4 hh (sickle cell anaemia) >>  

- Sex proportion of sickle cell anaemia individuals =  1/8 female sickle cell anaemia individuals + 1/8 male sickle cell anaemia individuals (1/8 + 1/8 = 1/4)

4. Many commercial grow lights deliver light mostly in the yellow/red part of the spectrum, along with smaller portions of all other visible light. Why would a grow light such as this promote plant growth and reproduction (flowering and fruiting) or is this a con job?

Answers

Answer and Explanation:

These lights can, in fact, promote the growth and reproduction of plants.

This is because growth, chlorophyll production, flowering and fruiting only occur if the plant is exposed to a band of light with 640-720 nm. Plants receive this band of light naturally through the sun, but when solar energy is not available it is possible to use cultivation lamps that emit this type of light band, which corresponds to the yellow/red spectra.

What types of materials could be broken dowr in a compost pile? A all recyclable materials B biodegradable materials C all materials that can be incinerated D glass, metal, and other raw materials

Answers

Answer:

All biodegradeable materials.

Which statement best describes how molecules interact with systems in the
human body
A. Carbon atoms combine with water to form the glucose molecules
that cells use to get the energy they need.
B. Oxygen molecules in the blood enter the cells of all body systems,
and the cells use them to get energy
C. Carbon dioxide molecules leave the body in exhaled air, and
oxygen molecules enter the body in inhaled air.
D. Oxygen molecules help carry other molecules in the blood as it
flows through the body.

Answers

Answer:

b

Explanation:

which player will generate the most FORCE??!!!

Answers

Answer:

Nick Boyle as 270 pounds is higher than others!

Explanation:

Answer:

Logan Thomas

Explanation:

For Labrador retrievers, black fur is dominant to yellow. a) Explain how two black dogs can have different genotypes. b) Could a black dog have the same genotype as a yellow dog

Answers

Answer:

Please find the answers explained below

Explanation:

A) This question involves a Gene coding for fur color in Labrador retrievers (a dog). The allele for black fur (B) is dominant over the alllele for yellow fur (b). Based on the law of dominance by Gregor Mendel, the dominant allele will always mask the phenotypic expression of the recessive allele in a heterozygous state. The two fur colors have different alleles, however, when they come together to form a heterozygote, the black fur is still expressed. Naturally, a black furred Labrador retriever should have the genotype; BB but since the black fur is a dominant trait, another heterozygous genotype will arise as Bb.

B) No, the black dog cannot have the same genotype as yellow dog. This is because the black dog must always have at least one dominant allele (B) in order to be black while the yellow dog, due to the recessiveness of the yellow allele can only have the genotype; bb. Hence, a black dog can either be Bb or BB but a yellow dog can only be bb.

Groundwater _____. forms when precipitation seeps into the soil exists above the earth's surface is impossible to pollute is not a usable water source for humans

Answers

Answer:forms when precipitation seeps into the soil

Explanation:

Answer:

It's B

Explanation:

I got it correct when I did it on my quiz on oddseyware.

What two genes a person actually has in their DNA; i.e. DD, Dd, or dd
A.genotype
B.phenotype
C.dominant
D.recessive

Answers

A: genotype

Hope this helps:)

Cierta especie de plantas varía en la forma de los bordes de sus hojas. Algunas de las plantas tienen hojas con bordes ondulados y algunas plantas tienen hojas con bordes rectos. En esta especie de plantas, un gen controla el rasgo de la forma del borde de la hoja. L representa el alelo dominante y I representa el alelo recesivo. Dos plantas con hojas de bordes ondulados se cruzan una con otra, produciendo 421 plantas. De las cuales, 298 plantas tienen hojas con bordes ondulados y 123 tienen hojas con bordes rectos. 3 ¿Cuáles son los fenotipos de las plantas madre en este cruce? А Lly II B Lly Ll C LL y ll DL y Ll​

Answers

Answer:

A. Lly

Explanation:

Creo que esto es correcto, pero No sé si esto es correcto

The right answer is A
Other Questions
PLZZ HELP FAST!!! Some of the events I studied this year were Missouri Compromise, Louisiana Purchase, Civil War, Educational Reform, Basically any event that happened from 1776-1876. I have to pick one that I would change and why. Explain what you would change about the event, underline 3 reasons to defend the claim. Provide factual information QUESTION 2Simplify the followinga5a7 All the other male pigs on the farm were porkers. The best known among them was a small fat pig named Squealer, with very round cheeks, twinkling eyes, nimble movements, and a shrill voice. He was a brilliant talker, and when he was arguing some difficult point he had a way of skipping from side to side and whisking his tail which was somehow very persuasive. The others said of Squealer that he could turn black into white. Animal Farm, George OrwellHow do the key details in the passage develop the central idea that a persuasive speaker can make others believe anything, even lies?The details show that Squealer is forceful and argumentative.The details show that Squealer is attractive, which impresses the others.The details show why other animals might believe anything Squealer says.The details show that Squealer is a hard worker, which is why the others trust him. Which statement represents support for the theory of actual representation?a. Every Englishman is taxed, and many do not send representatives to Parliament.b. Most British citizens do not meet the property requirements necessary to vote in elections.c. According to our principles, only colonial assemblies may impose internal taxes. Parliament only has the authority to regulate commerce.d. Colonists do not have equal standing before Parliament and are therefore subject to all of its laws.e. Henry Clinton was an important figure in the Revolutionary War.Select the statement that correctly identifies him.1. I was forced to surrender my army of 5,000 soldiers to the Continental Army at Saratoga.2. I was appointed Commander-in-Chief of the Continental Army by the Continental Congress.3. My troops forced the surrender of Charleston, from which I led a new military government.4. To sustain the Revolution through the winter months, I launched surprise attacks at Trenton and Princeton. John Locke's interpretation of the social contract differed from Thomas Hobbes's interpretation in that:A. Locke claimed that social contracts originated from a need for stability and protection from violence.B. Locke largely rejected the principles of freedom and equality that were part of liberalism. C. Locke argued that people have the right to overthrow governments that violate their rights.D. Locke suggested that people were naturally selfish and needed to be ruled by absolute monarchs. if the angle of elevation of the sun is 40 degrees, and is decreasing 1/3 radians/hour how fast is the shadow of a 35m tall pole lengthening? Was buck able to completely adjust to a life as a domestic dog again? difference between local system and si system "Ela tinha f demais que tudo daria certo." Nesta orao,encontramos o vcio de linguagem:A)estrangeirismo B)ambiguidade C)caofoniaD)pleonasmo vicioso Which lines in this passage demonstrate use of the bandwagon technique?Make a Difference This Weekend EZ POINTS GRADE 2 SCIENCE PLEASE ANSWER FUE TOMRROWAEfKEAFEASfill in the blanks wiht the words givewn below the volume of a cuboid is 480cm cube,it's breadth and height are 8cm are 6cm respectively find its length quien fue Sarmiento? Read this excerpt from "Hope, Despair, and Memory" by Elie Wiesel and answer the question. Of course we could try to forget the past. Why not? Is it not nature for a human being to repress what causes him pain, what causes him shame? Like the body, memory protects its wounds. When day breaks after a sleepless night, one's ghosts must withdraw; the dead are ordered back to their graves. But for the first time in history, we could not bury our dead. We bear their graves within ourselves. For us, forgetting was never an option. Deducing from context clues, what is the best statement of Wiesel's purpose in writing We bear their graves within ourselves? (A) to entertain through alliteration of "graves" and "ourselves" (B) to educate about the Holocaust (C) to establish connection with his readers (D) to enlighten with comparison of their souls with graves as the resting place for Holocaust victims Add -ment to the following word. You may use a dictionary.discouragediscouragementdiscouragment easy math please help i'll mark brainliest A small 175-g ball on the end of a light string is revolving uniformly on a frictionless surface in a horizontal circle of diameter1.0 m. Imagine you want to send an email to a dear friend who is going through arough time. Which example will get your message across most clearly?A. Often, when a friend needs help, she is reluctant to ask otherfriends for assistance.B. I hope you get better because the practice squad needs you.C. I can't even begin to imagine what you're going through, but I'mhere for you.D. Whenever people are struggling, it makes me feel powerless tohelp. Expand the brackets 3(12-W) Read the sentence.This is an example of aBrendan is playing in the backyard.O simple sentence.O compound sentence.O complex sentence.O compound-complex sentence.