Answer:true
Water is made up of 2 atoms of hydrogens and 1 atom of oxygen to form a molecule. Water contains half as many hydrogen atoms as oxygen atoms. Water is a polar molecule which means it has slightly charged ends. ... This means it bonds to like molecules and ionic molecules.
Explanation:
Stoichiometry must be multiplied by the number that is printed on the element's foot in order to determine how many atoms of a certain element there are in a given molecule. Therefore, the given statement is false.
What is atom?The smallest component of any element, molecule, or compound is called an atom. Atoms have a central nucleus and electrons that move in a set orbit around it.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. Overall, only the proton—not the neutron—is responsible for the nucleus' charge.
Two hydrogen atoms and one oxygen atom combine to produce the molecule of water. Hydrogen atoms make up 50% of the oxygen atoms in water.
Therefore, the given statement is false.
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A student observers melting crayons. Which of the following describes what they saw? A. A chemical change. B. A physical change. C. A physical property. D. A chemical property
Answer: A physical change
Explanation: since the melted they are still Crayons. You can freeze it and it would still be a crayon. So it was only a physical change
Imagine a polypeptide chain that contains the following amino acids, among several others. Describe FOUR interactions that will take place among the amino acids as they transform from free floating amino acids to a quaternary structure.
Answer:
1. Combination
2. Deformanation
3. Seperation
4. Opposition
Explanation:
I had this question on my test last week
Which of the following is the ultimate source of energy in the ecological
pyramid shown in the image?"
Shrubs
Water
O Heat
O Sunlight
Answer:
Water
Explanation:
Water never runs out
Answer:d
Explanation:
If a population has low death rates and high life expectancy which end of the population pyramid will increase?
Answer: "Constrictive" pyramid
[ I hope my answer is correct]
Summarize the 3 types of cell division: Binary fission, mitosis, and meiosis
Answer:
Binary Fission is the reproduction of prokaryotic cells (bacteria and bacteria-like Archaea) is accomplished through binary fission. Binary fission is essentially cloning. Barring mutations that may have occurred when the genetic material was copied (a process called replication), the two resulting daughter cells are identical to the parent cell.
Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information.
Who is credited with creating the first accurate model of DNA? Rosalind Franklin Friedrich Miescher James Watson and Francis Crick Marshall Nirenberg and Heinrich Matthaei
Answer:
The answer is C
Explanation:
The persons credited by accurate model of DNA are James Watson and Francis Crick.
What is model of DNA?
The molecular models of DNA structures are representations of the molecular geometry and topology of deoxyribonucleic acid (DNA).
First accurate model of DNAThe first accurate model of DNA also known as 3-dimensional double helix structure of DNA, was correctly elucidated by James Watson and Francis Crick.
Thus, the persons credited by accurate model of DNA are James Watson and Francis Crick.
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A scientist finds that a sample of matter contains three types of atoms. The sample can be any of the following, except:
A. compound
B. molecule
C. element
D. mixture
Answer:
D. mixture
Explanation:
because the mixture is not part of an atom
As per the given scenario, the sample can be any of the following, except element. The correct option is C.
What is an element?A substance that is unable to broken down chemically into smaller molecules.
An element is made up of atoms with the same atomic number, which means that each atom possesses the same count of protons in its nucleus as the other atoms in the element.
A chemical compound is a chemical substance made up of many identical molecules made up of atoms from multiple elements that are held together by chemical bonds.
A molecule made up of only one element's atoms is thus not a compound.
A scientist discovers three types of atoms in a sample of matter. Except for elements, the sample can be any of the compound, molecule or mixture.
Thus, the correct option is C.
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Anton van Leeuwenhoek did all of the following EXCEPT:
A) Build the first compound microscope
B) Discover bacteria
C) Help prove the theory of blood circulation
D) Discover protozoans
I am pretty sure the correct answer is a
Answer:
answer is A
Explanation:
Even though sunlight looks white, what is it really made up of?
Answer:
White light means your not missing any of the visible color spectrum, so all the colors.
Explanation:
I'll give BRAINLIEST if you answer this correctly
Answer:
i would say 6 but it might not be right
Explanation:
The structure of a water molecule influences its properties and supports its biological significance. Which property of water is correctly paired with its significance?
A. Water is adhesive so it expands when it freezes
B. Water is cohesive so it transports materials
C. Water is polar so it helps to cool the body
D. Water is polar so it acts as a solvent
There are ________________________ amendments to the Constitution.
Answer:
27 amendments as of 2020
Explanation:
Hope i helped!
i need help please i need help
Answer:
what do u need help with?
Explanation:
:P
A student is writing out an argument to give during their debate in class tomorrow. The student makes the claim that the body’s organ systems interact to carry out the process of obtaining nutrients from the food it takes in and then working to rid the body of the remaining waste.
Which of the arguments below best supports his claim?
A.
Respiratory system allows the body to bring in oxygen that it needs and Digestive system extracts the nutrients needed from the food the body consumes.
B.
Digestive system extracts the nutrients needed from the food the body consumes and the excretory system rids the body of the excess waste from the food that was consumed.
C.
Cardiovascular system carries the nutrients to the parts of the body that need to break them down for energy and Muscular system extracts the nutrients needed from the food the body consumes.
D.
Muscular system creates the energy needed and Respiratory system carries the excess waste from the food out of the body.
Answer:
The answer would be B.
Explanation:
If a mother has an AB blood type and her daughter has BB blood type, The dad has
AA blood, the mailman has type AO blood and the neighbor has BO blood. Which one is really the father?
A.the dad
B.the mailman
C.the neighbor
D.none of them
Answer:
c. neighbor
Explanation:
half the mother, half by fathee
I GIVE BRAINLIEST !!
Please help with this question! Tell how you know, Question worth 20 points!
Answer:
D
Explanation: It is the best answer to choose and most correct.
14. Why doesn't the inner core have convection?
Answer:
The inner core has subsequently been growing at the rate of around 1mm a year as iron crystals freeze and form a solid mass. The heat given off as the core cools flows from the core to the mantle to the Earth's crust through a process known as convection.
Explanation:
I hope this helps you.
MATCH
A)Abiotic
D)Migration
B)Acclimation
E)Anthropogenic
C)Biotic
24. caused or produced by humans
25. environmental factor that is nonliving
26. an organism’s change in response to a change in the environment
27. environmental factor that is living or was living
28. movement from one location to another by an organism or population
Answer:
24=E
25=A
26=B
27=C
28=D
why does an ecosystem have a carrying capacity?
What is the function and purpose of the proteins embedded in the cell membrane?
Answer:
The function of the proteins that are embedded in the cell membranes is to transport materials in and out of the cell. Proteins are large sized biomolecules that are also referred to as macromolecules at times. They are made up of large chains of amino acid molecules.
Please mark branliest!
In your own words describe how genetic diversity is increased through the processes of crossing over, independent assortment, and random sexual reproduction.
Answer: Genetic variation describes naturally occurring genetic differences among individuals of the same species. Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation. And there are the reasons.
Help ASAP give brainliest to first answer
Answer:
Won't fowl the lock and key, and maybe less binding of the substrate.
Explanation:
Answer:
Im pretty sure its the second one. Im sorry if its wrong!
Explanation:
IN YOUR OWN WORDS explain how cell differentiation creates the different cells in a multicellular organism.
Answer:
A multicellular organism develops from a single cell (the zygote) into a ... tissue and organ development, and cell differentiation (gaining a final cell type identity). ... To function correctly, that body needs well-defined axes (such as head vs. tail). ... Mature cell types of the body, like neurons and liver cells, express different sets
Explanation:
What is one way plants and animals are similar?
in a flower sperm is made by the filament pistil ovary or anther
Answer:
It is the anther.
Explanation:
The anther is comparable to the make testis. These give rise tomale sperm cells.
Different land areas of the United States grow different crops because
Different land areas of the United States grow different crops because some crops can't be grown everywhere. For example some plants can survive the winter while others can't.
Which of the following can occur because of the exchange of homologous chromosome parts during the process of meiosis?
Answer:
Muttation can occur during the exchange of genetic meterial from homologous chromosomes which may led to cause deseases in some cases.
Explanation:
Homologous chromosomes exchange genetic material during the process of meiosis.
What is Meiosis?Meiosis is a type of cell division in which germ cells present in the sexually-reproducing organisms produces the gametes, such as sperm or egg cells. It involves two rounds of division which results in four cells with only one copy of each chromosome.
These four cells are haploid in nature. Meiosis produces the sex cells or gametes like eggs in females and sperm in males.
Meiosis is divided into nine stages. These are divided between the first time the cell divides (meiosis I) and the second time it divides (meiosis II).
Thus, homologous chromosomes exchange genetic material during the process of meiosis.
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A lake in Minnesota was thriving with black bass and bluegill. These particular fish build nests on the sandy bottom of the lake. Now, ecologists are finding that over time a layer of humus has slowly been covering the pond. The ecologists are noting that the populations of black bass and bluegill are declining, and the fish that are able to make nests in humus are rising in numbers.
The ecologists can probably conclude that this event is an example of:
commensalism
parasitism
primary succession
succession
Answer:
Explanation:
https://quizizz.com/admin/quiz/5c9100e1202f89001c843569/stages-in-aquatic-ecological-succession
The event described, where a layer of humus covers the sandy bottom of the lake and affects the fish populations, is an example of succession.
Succession is the process of ecological change over time in a particular area. It involves a series of predictable and sequential changes in the composition and structure of an ecosystem.
In this case, the gradual accumulation of humus, a layer of decomposed organic matter, is altering the habitat conditions in the lake.
The decline in the populations of black bass and bluegill, which build nests on the sandy bottom, can be attributed to the changing habitat.
The humus layer is likely making it difficult or impossible for these fish to construct their nests. On the other hand, fish that are capable of making nests in humus, possibly adapted to this type of substrate, are increasing in numbers.
Therefore, the observed changes in fish populations and the altered habitat due to the accumulation of humus indicate a shift in the ecological community over time, which is a characteristic of succession.
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An elephant is a multicellular organism that weighs about 200 pounds at birth and can grow to weigh as much as 15,000 pounds. What increases as the elephant grows into an adult?
The collection of water in each cell
⊝
The amount of energy in its cells
⊝
The size of each body cell
⊝
The number of cells i
Answer:
D?
Explanation:
Im assuming the last one is "The number of cells in its body". If so, that is the right one.
Oxygen-poor blood flows out of the heart and into the lungs. Nutrients and oxygen are sent to other cells and parts of the body. The blood then returns to the heart to begin the process again. Which of the body's systems is the above process describing? Answers (A) -The skeletal system (B)-The digestive system (C)-The respiratory system (D)-The circulatory system
Answer:
(D)-The circulatory system
Explanation:
lol just did it
and pls give me thanks
The circulatory system is the system which consist of blood vessels, heart, and blood. The main function of this system is the transport of oxygen and minerals to all the cells of body. Thus, the correct option is D.
What is Circulatory System?The circulatory system of body consists of all the blood vessels, blood and heart. In this system, blood travels through different blood vessels (arteries, veins, and capillaries) in all parts of the body.
The blood is the main fluid of the body that contains hemoglobin protein which is responsible for the transport of oxygen and carbon dioxide in the body. The blood exchanges gases at the surface of alveoli in the lungs and sends the blood to the heart, heart pumps the blood to all the cells of body.
Therefore, the correct option is D.
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