Answer:
Primitive Earth (Before life) contained no or very little Oxygen (element#8)
According to scientific theory:
Earth had no oxygen to begin with. It had a lot of carbon dioxide, though. Somehow (We still do not know how they started growing) single-celled Carbon Dioxide-breathing bacteria slowly, over thousands to millions of years, turned most carbon dioxide into oxygen, supporting new types of life.
:)
What is the main structural component of plants?
Answer: Carbohydrates
Explanation:
Carbohydrates are the most abundant structural component present in plants and microorganisms. Most carbohydrates are present in polymers such as cellulose, starch, and hemicelluloses. Cellulose is a structural component of plants that is associated with hemicelluloses and lignin (Fig.
This cell is dividing into two new cells. Which two statements describe the two new cells?
A. Each new cell has a unique combination of genes.
B. Each new cell contains genetic information that is different from what was in the original cell.
C. Each new cell carries genetic information that is the same as what was in the original cell.
D. Each new cell is genetically identical to the other.
D) each new cell is genetically identical
Animals release energy needed for growth and repair through a
Answer:
The best answer of how animals release energy needed for growth and repair is ( C ) : A series of chemical reaction during cellular respiration
Animals need energy to function effectively daily and also to repair. one way by which Animals get such energy is through cellular respiration.
during cellular respiration the series of chemical reaction that leads to the release of energy follows this pattern.
Consumed food ( sugar/glucose molecules ) are broken down
The energy released from the breakdown is then transformed into ATP energy
The transformed ATP energy is then used for Cellular activities ( growth and repair of animal cells )
Photosynthesis and Cellular respiration are have similar process but the former ( photosynthesis ) occurs in plants not Animals.
Hence we can conclude that animals release energy needed for growth and repair through a series of chemical reaction during cellular respiration.
Explanation:PLSS BRAINLIESTT
Explain why glucose continues to enter a cell, even when the concentration inside the cell might be higher than outside.
How many ions can move through a protein channel per second (on average)?
Do protein channels have specificity? (i.e. Are they specific about what they let cross the membrane or can any molecule go through any channel?)
Explain how the sodium/potassium pump works. Why does this process require ATP?
Answer:
1)ATP. The concentration of glucose inside of a cell is higher than the concentration outside of that cell, yet glucose continues to enter the cell. ... Two solutions are separated by a selectively permeable membrane that is not permeable to glucose.
2)For transport efficiency, channels have an advantage over carriers in that up to 100 million ions can pass through one open channel each second—a rate 105 times greater than the fastest rate of transport mediated by any known carrier protein.
3)The sodium-potassium pump uses active transport to move molecules from a high concentration to a low concentration. The sodium-potassium pump moves sodium ions out of and potassium ions into the cell. This pump is powered by ATP. For each ATP that is broken down, 3 sodium ions move out and 2 potassium ions move in.
Which statement correctly describes fertilization? (1 point)
Fertilization is the process in which the zygote undergoes mitosis and forms a group of cells.
O Fertilization is the process in which male and female gametes fuse and form a fertilized egg.
Fertilization is the process in which the embryo develops a fluid-filled sac for protection.
O Fertilization is the process in which male and female gametes shift to align with the birth canal.
Answer:
B
Explanation:
Fertilization is the process in which male and female gametes fuse and form a fertilized egg. The correct option is B.
What is the process of fertilization?During fertilization, sperm and egg combine to form a zygote in one of the fallopian tubes.
The zygote then travels down the fallopian tube and develops into a morula. The morula develops into a blastocyst once it reaches the uterus.
The blastocyst then burrows into the uterine lining, which is referred to as implantation.
The sperm binds to the secondary oocyte via the corona radiata, a layer of follicle cells on the outside of the oocyte.
Fertilization is divided into three stages: sperm capacitation and acrosome reaction, sperm-egg binding and fusion, and cortical reaction and oocyte activation.
In a nutshell, sperm capacitation takes place in the female genital tract and prepares sperm cells for the acrosome reaction.
Thus, the correct option is B.
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Please help dont put down some answer please i will give you good review and lots of points.
Answer:
Planet Y
Explanation:
Planet Y has the smaller period because it takes less time to orbit the star. This is because it has less distance to travel compared to X.
which atom weighs the most
Answer:
ELEMENT = hyrdogen SYMBOL= H ATOMIC NUMBER= 1 ATOMIC WEIGHT = [1.00784, 1.00811]
What mommy yes are used to build the sugar in photosynthesis. Multiple choice PLEASE AND THANKYOU
carbon dioxide
none of these
oxygen
water
6 moles of carbon dioxide and water are used to synthesize 1 mole of glucose, in photosynthesis
6 CO2 + 6 H2O + Solar energy ----> C6H12O6 + 6 O2
Plz help I need help
what do you mean by Dermatology?
Answer:
its basically the treatment of skin contiditions like acne and other stuff
Explanation:
Answer:
Dermatology is the science that is concerned with the diagnosis and treatment of diseases of the skin, hair and nails.
Explanation:
how to determine density?
Answer:
The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.
Explanation: HOPE IT HELPS AND PLS MARK BRAINLIEST
Plz help I need help
Which developed country has the fastest population growth rate today
Answer:
Officially known as the Sultanate of Oman, Oman has the world’s highest population growth rate. Located in the southwestern region of Asia, the country has an estimated population of 4.83 million people as of 2018, which is rapid growth from 2.77 million in 2010.
Explanation:
Hope this helps :)
and also pls tell me what you think of my pfp I just found it
pls make brainliest :p
Which is the most comprehensive ecological unit of the biosphere?
O ecosystem
O individual
community
biome
Answer:
D. Biome
Explanation:
The most comprehensive ecological unit of the biosphere is the biomes. Biomes are the largest ecological unit of life.
Can you guys recommend me any interesting diseases to research?
Answer:
alice in wonderland syndrome
Explanation:
Rewrite the new sequence after the deletion of the "G" in position 3:
CCG.....UAG..... GUC.....CUG
Deletion is just the removal of one of the nucleotides. Therefore, the new sequence would be:
CCU...AGG...UCC...UG
(Basically everything moves over one)
help ASAP due at 7:30 What explains a broken bone healing?
look at the photo
Answer:
1st one
Explanation:
DNA replace the old cells
1. what are reactants in cellular respiration?
2. what are products in cellular respiration?
3. where specifically does cellular respiration take place?
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP) Energy; waste products include carbon dioxide and water. It take place in the mitochondria of cells
I am looking for help on this thanks.
What is an example of absolute threshold in psychology?
Answer:
In hearing, absolute threshold is the smallest level of tone you can detect, considering you have normal hearing and there are no interfering sounds. For example, you might not be able to hear someone whispering from 20 feet away, but if that person speaks to a normal voice, it may reach your absolute threshold.
Explanation:
study harder
Answer: In hearing, absolute threshold is the smallest level of tone you can detect, considering you have normal hearing and there are no interfering sounds. For example, you might not be able to hear someone whispering from 20 feet away, but if that person speaks to a normal voice, it may reach your absolute threshold.
Explanation:
Feedback always occurs when
Answer:
you are really bored and you want to see some pretty interesting things
Explanation:
________ causes euphoria followed by agitation, and is the major opioid drug of abuse.
Heroin is an opioid drug composed of morphine, a natural alkaloid derived from extracts from the seeds of the opium poppy. It is for that reason that heroin is considered a semi-synthetic opioid.
HEROIN causes euphoria followed by agitation, and is the major opioid drug of abuse.Heroin is a drug that causes addiction, a form of substance use disorder.This drug (heroin) is capable of entering the brain quickly and producing immediate effects.The feeling of euphoria caused by heroin is followed by a period of sedation because heroin (as well other opioids) sedates the brain.Learn more in:
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Answer my question here for my watch silence class
Answer:
No etniendo
Explanation:
Perdon
How cells make proteins quick check. Select the statement that is true
Answer:
In order for a cell to manufacture these proteins, specific genes within its DNA must first be transcribed into molecules of mRNA; then, these transcripts must be translated into chains of amino acids, which later fold into fully functional proteins.
In order for a cell to manufacture these proteins, specific genes within its DNA must first be transcribed into molecules of mRNA; then, these transcripts must be translated into chains of amino acids, which later fold into fully functional proteins.
What are proteins?The protein molecules that the genes in DNA encode are the "workhorses" of the cell, performing all the tasks required for life. Proteins include, for instance, DNA polymerases and other enzymes that produce copies of DNA during cell division, as well as enzymes that metabolize nutrients and synthesize new cellular components.
The simplest definition of gene expression is the production of the gene's corresponding protein, and this complex procedure involves two main phases.
Transcription is the process by which the data in DNA is converted into a messenger RNA (mRNA) molecule in the initial phase. A pre-mRNA molecule is formed during transcription by an enzyme called RNA polymerase II using the DNA of a gene as a template for complementary base-pairing.
Therefore, In order for a cell to manufacture these proteins, specific genes within its DNA must first be transcribed into molecules of mRNA; then, these transcripts must be translated into chains of amino acids, which later fold into fully functional proteins.
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Which are the reactants of photosynthesis
Answer:
The reactants of photosynthesis are everything to the left of the "———>" arrow, thus the reactants of photosynthesis are carbon dioxide, water, and sunlight energy. The products of photosynthesis are everything to the right of the "———>" arrow, thus the products of photosynthesis are glucose and oxygen
Explanation:
5 reactants of photosynthesis:
The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.
HELP!!!!!!
I don’t understand what to do. If you can please explain but just giving the answers would be fine.
theres no question or picture sorry
Which statement is true?
O All fungi are multicellular heterotrophs.
O All fungi are single-celled heterotrophs.
O All animals are multicellular heterotrophs.
O All animals are single-celled heterotrophs.
Answer:
The answer should be the third option. 'All animals are multicellular heterotrophs'
Explanation:
Which term is most closely associated with FERMENTATION?
Fermentation can be viewed as a form of respiration in the absence of oxygen. In other words, fermentation is equivalent to anaerobic respiration.
Fermentation can be of two types:
Lactic acid fermentationAlcohol fermentationLactic acid fermentation is carried out by some bacteria or the muscle cells of mammals. During this process, carbohydrates undergo glycolysis, and the pyruvate molecules produced are used to generate lactic acid with the generation of energy in the form of ATP.
Alcohol fermentation is carried out by yeast and some other fungi/bacteria. During this process, the pyruvate molecules produced by glycolysis are converted to alcohol with ATP generated as a result. Carbon dioxide is also evolved as a by-product of the reaction.
More on fermentation can be found here: https://brainly.com/question/6947990
How does increasing the temperature affect the random motion of molecules?
Answer:
Raising temperature increases energy, resulting in faster speed of molecules.
Explanation:
Increasing the temperature introduces more energy to the system, which will cause the random motion of molecules to increase in speed.
Hope this helps! :) Let me know if my answer doesn't make sense!
How are phospholipids and DNA similr
Answer:
I think answer is liquid vesicles concentration was 0.3 mg/ ml