distinguish between ionic and covalent bonds.
Answer:
in ionic bonds one atoms gives away electrons to another atom whereas in a covalent bond they share electrons
Explain how DNA determines the structure of proteins
Answer:
Explanation: The sequence of bases in a DNA molecule can determine the order of amino acids in a protein molecule. Groups of three bases called triplets represent different amino acids. This is the basis of the genetic code . A sequence of bases (genetic information) on DNA that codes for a protein is called a gene .
The DNA determines the structure of proteins as it has sequence of bases in a DNA molecule can determine the order of amino acids in a protein molecule. Groups of three bases called triplets represent different amino acids. This has the basis of the genetic code . A sequence of the bases (genetic information) on DNA that codes for a protein has been called a gene.
What is DNA?DNA has been also known as the deoxyribonucleic acid and it has been basically composed of two polynucleotide chains and by the nature it has been a polymer. The polynucleotide chains can be folded around them with each other to form a coiled or the structure which has double helical and it has been consist of the genetic material along with the genetic information which has very much essential for proper body functioning, reproduction, growth, and other necessary activity of the body.
The the main objective of the DNA has that it has been containing genetic material which has to plays an important role in the survival of life as it has been consist of the instructions that has been required for the survial of life. The main constituent of the DNA or DNA has made up of the nucleotides. There are mainly three types of the DNA and these are A DNA, Z DNA, and B DNA. DNA consist four chemical bases and these are adenine, guanine, thymine, and cytosine.
Therefore, Groups of three bases called triplets represent different amino acids. This has the basis of the genetic code . A sequence of the bases (genetic information) on DNA that codes for a protein has been called a gene.
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a layer of water just under a frog's skin captures oxygen from air or water and delivers it to blood vessels at the skin's surface.how might this function relate to the fact that frogs are very sensitive to environmental pollution
Answer:
Frogs breathe through water through their skin. This means their entire skin is their respiratory system in a way. If they submerge themselves in dirty and impure water, they'll become very easily sick and die.
Frogs breathe through their skin into the water. This implies that, in a sense, their entire epidermis acts as their respiratory system. They will quickly get sick and die if they immerse themselves in contaminated water.
What is respiratory system?Such respiration occurs through four to five pairs of gills while a tadpole is in its larval stage.
Blood veins are scattered throughout the gills, which use diffusion to take in oxygen. Blood's hemoglobin and oxygen mix to create oxyhaemoglobin, which travels to tissues.
Cicatricial respiration is the term for breathing through the skin. It occurs in water and during aestivation and hibernation, when the need for oxygen is minimal and metabolism is low. Through the blood capillaries, where oxygen combines with hemoglobin, skin absorbs oxygen dissolved in water.
Therefore, Frogs breathe through their skin into the water. This implies that, in a sense, their entire epidermis acts as their respiratory system. They will quickly get sick and die if they immerse themselves in contaminated water.
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List 3 ways Rhinos are critically endangered.
Answer:
when ppl kill em, natural habitat, n fires
What term refers to loose dna that makes up a chromosome?
Answer:
Chromatin
Explanation:
1. What was the major discovery or invention?
Answer:
Well here's a few ( depends what you're talking about)
Explanation:
the discovery of fire
the invention of farming (planting seeds, then caring for and harvesting the crops)
the invention of the wheel
the invention of sails and sailing ships
the invention of gunpowder
the invention of writing
the invention of paper
the invention of printing
the discovery of the circulation of blood (how the heart pumps blood throughout the body)
the invention of the microscope and telescope
the discovery of microorganisms
the discovery that earth circles the sun
the discovery of gravity
the discovery of electricity and ways to control it
the invention of steam ships
the invention of the gasoline engine and motor vehicles (cars, trucks, etc.)
the invention of the telephone
the invention of the radio
the discovery of penicillin and other antibiotics
the invention of the computer and then the Internet
What is the main difference between an animal and a plant? A. Animals have more organelles. B. Nothing, plants and animals are the same. C. Animals make their own food, plants do not. D. Plants make their own food, animals do not.
Answer:
D
Explanation:
"Plants are green. They live using sunlight, carbon dioxide, and nutrients, making their own food through the process of photosynthesis. In contrast, animals live by eating other organisms (plants, animals, bacteria, or even bits and pieces of dead organisms".
How do i know what elements will form chemical bonds
Answer:
the number of electrons in its valence shell
Explanation:
Can someone help me with this question?
what is difference between the male and female voice
Answer:
Female voices are higher, and male voices are deeper. This is caused by the vocal muscles being more contracted than the others during puberty. Hope this helped and have a wonderful day/night! :D
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The cell theory was not complete until Rudolph Virchow discovered that....
a. cells are alive
b. there are 2 types of cells ( prokaryotic and eukaryotic)
c. all cells come from preexisting cells
The oxidation of glucose to two molecules each of pyruvate, ATP, and NADH is called ________ and occurs in the ______.
Answer:
1. Glycolysis
2. Cytoplasm
Explanation:
This question is describing the process of cellular respiration. Cellular respiration, which is the process by which organisms obtain their energy (ATP), occurs in stages. The first stage undergone by all living cells is called GLYCOLYSIS.
IN GLYCOLYSIS, glucose molecule (from digested food) is broken down via oxidation in the CYTOPLASM of the cell, into two molecules each of pyruvate, ATP, and NADH. The pyruvate proceeds to the other stages of cellular respiration.
How does the sun power the carbon cycle
Answer:
The sun takes an integral role in the photosynthesis stage of the Carbon Cycle. Photosynthesis refers to the process by which plants take in carbon dioxide and water (the products of respiration), and convert it to oxygen, powered by the energy of the sun.
Explanation:
which cell part helps to control the materials that enter and leave a cell?
Answer:
cell membrane
Answer:
cell membrance
Explanation:
the cell membrane protects the cell and controls enter and leave it.
Base your answers to the following questions on the notes below written by a student during a field trip.
It is cool in the shade, and the rock cliff above us still has some ice on it from winter. The rocks we are sitting on have sharp edges. Rock fragments at the
bottom of the cliff are the same color as the cliff. Our teacher warned us to watch out for falling rocks.
Explain how ice in cracks on the cliff at location C may have helped cause weathering of the bedrock on the face of tile clift.
Answer:
Location A
Location B
Location C
Good view from this hilltop; chilly and windy. We rested to catch our breath, then collected samples. Rocks are visible everywhere. There are boulders, cobbles, and pebbles of many sizes ans shapes mixed together. These surface rock fragments are composed of metamorphic rock sitting on the limestone bedrock. The teacher showed us parallel scratches in the bedrock. I saw almost no soil.
It is rocky and the stream bank is steep. Where we are standing, we can see a waterfall and rapids. It is cool by the water. From the streambed we collected pebbles and cobbles - some red, some white, others a mixture of many colors. The streambed is full of rocks of all sizes. The teacher warned us to be careful of the strong stream current.
It is cool in the shade, and the rock cliff above us still  has some ice on it from winter. The rocks we are sitting on have sharp edges. Rock fragments at the bottom of the cliff are the same color as the cliff. Our teacher warned us to watch out for falling rocks.
explain how the real genetic crosses may be used to help work out the genotype of a black mouse. (4 marks)
Answer:
A test cross may be used to help work out the genotype of a black mouse.
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files.
plz help me Construct and revise an explanation about the relationships between atoms in sugar molecules and atoms in carbon-based molecules
Answer:
The sugar molecules thus formed contain carbon, hydrogen, and oxygen: Their hydrocarbon backbones are used to make amino acids and other carbon-based molecules that can be assembled into larger molecules (such as proteins or DNA), used for example to form new cells.
Which object made of one or more smaller units would make the best model of cells
from a plant?
Since they cannot make their own energy, fungi are best classified as _____.
A autotrophs
B heterotrophs
C prokaryotes
D producers
Answer:
B
Explanation:
plants are autotrophs meaning they make their own food using the energy from sunlight. Fungi are heterotrophs which means they obtain food from outside of themselves.
Answer:
b
Explanation:
Drag each label to the correct location on the image. PLZ HELP!
Answer:
Brainly's inappropriate language check is messing me up
Explanation:
Answer:
Hom.ozygous Dominant: SS, BB
Heterozygous: Ss, Bb
Homo.zygous Recessive: ss, bb
Explanation:
Every trait has "two alleles." These determine the characteristics of an organism. Homo.zygous alleles are classified into either "dominant" or recessive." It consists of two identical alleles. Heterozygous alleles means two different types of alleles.
A homo.zygous dominant means having two alleles of "smooth" hair (SS) or having two alleles of "black" hair (BB).
A homo.zygous recessive means having two alleles of "curly" hair (ss) or having two alleles of "chestnut" hair (bb).
A heterozygous is a combination of a dominant allele and a recessive allele. One allele for smooth hair and another allele for curly hair (Ss) or one allele of black hair and another allele for chestnut hair (Bb).
How are speed and velocity different from each other
:
Speed is the rate at which something travels
Velocity is the rate at which a position changes
:
How are people exposed to chemicals on a daily basis?
a. in the food they eat
b. in the air they breathe c. in the water they drink
d. all of the above
Answer:
The answer is all of the above.
Why is there
identical mountain
ranges found across
continents?
Answer:
World Splitting after dinosaurs died from a meteor strike the planet got split from the crash and when other meteors would hit and mass earthquakes would make on continent become two
Explanation:
i hope this helps the answer is the explanation
Where does the carbon in glucose end up at the end of cellular respiration?
a. it stays in glucose
b. it is released into the air as carbon dioxide
c. it disappears
Answer:
it is released into the air as carbon dioxide
Answer:
B
Explanation:
Through the process of Cellular Respiration, a organism inhales and exhales, and the carbon is then turned into CO2, or Carbon Dioxide,
Which of these increases the level of carbon dioxide in the atmosphere?
A. Driving a car
B. Traveling by plane
C. Cutting down trees
D. All of these
Subscripts in a molecular indicate how many of each type of can be found in that molecule.
Answer:
A subscript is used only when more than one atom of a given type is present.
Explanation:
Molecular formulas are written with an index in the lower right corner. The index indicates the total number of atoms of one chemical element that is part of a molecule.
In the molecular formula of a compound, the coefficients can be different and that means that we have a different number of molecules of the same compound, but the indices cannot be different, because then it is no longer the same compound.
How many molecules of ATP are produced in aerobic verses anaerobic cellular respiration?_________
Answer:
in anaerobic 2atp releases and in aerobic 38 aap releases
Which activity can be accomplished using the genetic code?
mRNA can be made into tRNA.
A polypeptide can be made into mRNA.
RNA can be copied before mitosis.
DNA can be made into mRNA.
How is fick's law calculated
Answer:
Explanation:Fick's Law describes the relationship between the rate of diffusion and the three factors that affect diffusion. It states that 'the rate of diffusion is proportional to both the surface area and concentration difference and is inversely proportional to the thickness of the membrane'. ∝ means 'is proportional to'.
students are measuring the rate of enzyme activity. the graph below shows the rate of enzyme action as they increase the temperature. what is one possible reason the enzyme is less effective at high temperature
Answer:
The heat will cause the enzyme to denature(deform) and the subtrate will no longer fit into the enzyme.