Answer:
False.
Explanation:
Genes doesn't contain in DNA
Using this sample model as a guide, create a molecular clock model. Use the flowchart tools in your word processing program to make your model. Make sure the mutations are clearly visible in the strand. Consider using a different font color for the mutations.
Answer:
This is what I put. Feel free to use.
Explanation:
See image
The molecular clock model shows mutations of life genes at a rate of one mutation per 30 million years.
What is a molecular clock?A molecular clock is clock which uses a biomolecule such as gene which undergoes changes at constant to determine the age or time when life forms emerged.
The flowchart shows the molecular clock model.
The rate of mutation is one mutation per 30 million years.
Therefore, the molecular clock model shows mutations of life genes at a rate of one per 30 million years.
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Which statement best compares these chemicals?
Answer:
the sentence that compares
Which stain gives color to gram negative bacteria after decolorizer has been added?
A. water
B. iodine
C. alcohol
D. safranin
Answer:
D. safranin
Explanation:
Hope it help stay safe
What was the second organism to be found here on planet Earth?
Answer:
Prokaryotes
Explanation:
There are two types of basical organisms .Eukaryotes-(Single cell)Prokaryotes-(Multi cell)What was the second organism to be found here on planet Earth?
ProkaryotesAccording to scientists the first organism was Bacteria and the next organism to be found was Prokaryotes. Bacteria is also a Prokaryote but only its type. After Bacteria all the types of Prokaryotes were found on earth...~
the study of which structure was instrumental in the formulation of the modern cell theory?
plant cell
animal cell
cell membrane
DNA molecule
Answer: DNA molecule.
A. What are the effects of Earth's rotation? (10 points)
Answer:The Earth's rotation affects the movement of water in the oceans.
The anatomical stalk of the pituitary is also known as.
Explanation:
also known as the infundibular stalk, Fenderson's funnel, or simply the infundibulum is the connection between the hypothalamus and the posterior pituitary.
1)Explain what DNA means
2)Explain the 3 components of DNA (Pentose Sugar, Phosphate, Nitrogenous Bases)
3)Explain the 2 types of Nitrogenous bases (Purines vs. Pyrimidines)
4)Explain Chargaff's rules for base -pairing
5)Identify what objects/colors you used for your DNA Model
(Ex Key A=Red T= Green etc.)
Phosphate group = toothpick end
6)Twist your model and explain how it is a helix
Answer:
DNA
DNADeoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
2) (i) A pentose sugar is a monosaccharide with 5 carbon atoms. Pentose sugars are the deoxyribose sugars, which are part of nucleotides in DNA
(Ii) a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid H ₃PO ₄. The phosphate or orthophosphate ion [PO ₄]³⁻ is derived from phosphoric acid by the removal of three protons H⁺
Formula: PO₄³⁻
Molar mass: 94.9714 g/mol
3D model (JSmol): Interactive image; Interactive image; Interactive image; Interactive image
Beilstein Reference: 3903772
Conjugate acid: Monohydrogen phosphate
Gmelin Reference: 1997
(III) Nucleobases, also known as nitrogenous bases or often simply bases, are nitrogen-containing biological compounds that form nucleosides, which, in turn, are components of nucleotides, with all of these monomers constituting the basic building blocks of nucleic acids.
3) purine nitrogenous bases:-
Purines and Pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
pyrimidine nitrogenous bases
Pyrimidine: A nitrogenous base similar to benzene (a six-membered ring) and includes cytosine, thymine, and uracil as bases used for DNA or RNA.
The pyrimidine bases are thymine (5-methyl-2,4-dioxipyrimidine), cytosine (2-oxo-4-aminopyrimidine), and uracil (2,4-dioxoypyrimidine)
4) Explain Chargaff's rules for base -pairing
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio of purine and pyrimidine bases (i.e., A+G=T+C ) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.
5)Identify what objects/colors you used for your DNA Model
The four nitrogenous bases that compose DNA nucleotides are shown in bright colors: adenine (A, green), thymine (T, red), cytosine (C, orange), and guanine (G, blue).
6)Twist your model and explain how it is a helix
Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
The double helix of DNA is, like its name implies, in the shape of a helix which is essentially a three dimensional spiral. The double comes from the fact that the helix is made of two long strands of DNA that are intertwined—sort of like a twisted ladder.
Neurons are:
A. highly specialized cells that produce myelin
B. found in primates and humans, but not in other animals
C. found only in the spinal cord and bone marrow
D. highly specialized cells that have the primary function of communicating information
Answer:
1: Schwann Cells
2: Large brains
3: Blood vessels
4: NeuronsNeuronsNeurons
Explanation:
What is the functional advantage of the alveolar walls being thin.
The oxygen brought in can diffuse to your entire body and carbon dioxide from your lungs can be easily exhaled
In which phase of mitosis do sister chromatids separate?.
Answer:
Anaphase II
Explanation:
"Anaphase II
As the proteins holding them together break down, the sister chromatids separate. These separating sister chromatids will be allocated into different cells. As the spindle fibers shorten, the separated sister chromatids move towards the ends, or poles, of the cell."
Answer the following.
What happened to the pebbles?
What happened to the sand?
What happened to the soil?
Compare your prediction with the actual results.
How does this experiment show what happens to soil and rocks in natural water erosion?
Answer:
Explanation:
Soil erosion is a gradual process that occurs when the impact of water or wind detaches and removes soil particles, causing the soil to deteriorate. Soil deterioration and low water quality due to erosion and surface runoff have become severe problems worldwide.
A ______ coloration would be the most beneficial adaptation for insects that live in the grass.
Answer:
the answer is green coloration
Answer:
Green Coloration is the answer
Explanation:
I took the test
A student compared these diagrams. The student found that each of these organisms had a heart to pump
blood. Which statement is supported by the student's findings
Answer:
The student found that each of these organisms had a heart to pump blood.
If you could merge two different animals to create the ultimate animal, what two animals would it be and what would be their product?
Answer:
I would do the Water Bear and the Wolf.
Explanation:
It would be almost invincible like the Water Bear, but a strong and fierce hunter like the Wolf.
That would be a lion and a tiger to form a liger. This process is known as hybridization.
What is hybridization?When two individuals from different species and are genetically different breed together to form a different organism, then this process is called hybridization, and the new organism produced is known as a hybrid. They have the traits of both parents.
Through hybridization, sometimes new species are produced. Sometimes hybrid can boost diversity.
Liger is produced by a cross between a male lion and a female tiger. When a female lion and male tiger are bred together, then a tigon hybrid is produced. There are so many examples of hybridization in animals like mules, liger, tigon, zebroids, and hinny, etc. Liger is an ultimate hybrid. Hence, Liger is the correct option.
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13. When one or more chromosomes fail to separate properly this is:
A. mitosis B.nondisjunction C.cytokinesis D. division
Answer:
The answer is B
Explanation:
I hope you have/had an amazing day today and may God bless you<3
K12
Which catastrophic event does NOT have an earthquake as a possible trigger?
landslide
hurricane
tsunami
Hurricane is the catastrophic event which does NOT have an earthquake as a possible trigger.
What is a hurricane?A hurricane is a powerful and large tropical storm that forms over the Atlantic Ocean and northeastern Pacific Ocean. It is characterized by strong winds, heavy rainfall, and a large, spiraling circulation of clouds and winds. Hurricanes form from low-pressure systems that develop over warm ocean waters and can bring widespread damage to coastal areas and inland regions.
The term "hurricane" is used primarily in the Atlantic Ocean and northeastern Pacific Ocean, while similar storms in other parts of the world are known as typhoons or tropical cyclones, depending on the region. Hurricanes can cause severe damage to property, disrupt transportation and communication systems, and lead to widespread power outages. They can also lead to storm surges, which are large and dangerous increases in sea level along the coast, and cause significant loss of life and property damage.
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Which body system is directly threatened when bacteria infect the lungs?.
Answer:
The answer is the Respiratory System.
Explanation:
The Respiratory System is made up of the Lungs, windpipe, voice box (larynx), etc;. Since the lungs are part of this body system, bacteria would threaten this system directly.
The introduction of ________ onto the island of Guam has resulted in the extinction of most of the endemic forest bird species on the island. Group of answer choices kudzu cane toads European starlings Nile perch brown tree snakes
Answer:
the best book
Explanation:
got it right on the test
Look for a pattern. What are the next two terms in the sequence?
55, 44, 33, 22,.
A. 11,0
B. 11, -11
C. 0, -11
O
D. -22, -33
____________ is the process through which blood in the capillary pushes water, waste products, electrolytes, glucose, and other substances through pores in the glomerulus and out into Bowman's capsule.
Answer:
Filtration
Explanation:
You notice that two mutations result in no expression of the lac operon (Mutations 1 and Mutation 2), two mutations result in low expression of the lac operon even in the presence of lactose and the absence of glucose (Mutation 3 and Mutation 4), and two mutations result in constitutive expression of the lac operon (Mutation 5 and Mutation 6). First, think about what types of mutations could cause the phenotypes you see. Sort each mutation into the bin that describes its expression pattern
Answer
Mutations in the promoter sequence prevent RNA polymerase from binding and transcribing the operon; this results in no expression.
Binding of the CAP protein (bound to cAMP) to the CAP-cAMP binding site facilitates the binding of RNA polymerase to the promoter sequence. Mutations in the gene that encodes the CAP protein or in the CAP-cAMP binding site make binding of RNA polymerase to the promoter less likely. This results in a lower than normal expression of the operon.
Loss of function mutations in the repressor protein or in the operator region to which it binds prevent the repressor from blocking transcription. This results in constitutive expression of the operon.
Gain of function mutations in the gene for the repressor (super-repressor) cause the repressor to bind to the operator even in the presence of lactose; this results in no expression.
Mutations in the lacZ gene which encodes beta-galactosidase result in no expression of beta-galactosidase.
In plants and algae, _____ is the source of the electrons needed for photosynthesis.
In plants and algae, light energy is the source of the electrons needed for photosynthesis.
In plants and algae, water is the source of the electrons needed for photosynthesis, which is present in Option A, as in the light-dependent reactions of photosynthesis, water molecules are split and electrons move.
What is photosynthesis?Photosynthesis is the process by which plants, algae, and some bacteria convert light energy into chemical energy that occurs in the chloroplasts of plant and algal cells, and there are two main stages of photosynthesis: the light-dependent reactions and the light-independent reactions. Light energy is absorbed by chlorophyll pigments in light-dependent reactions, and water splits to release electrons, which then these electrons move through a series of enzyme and protein complexes to produce ATP and NADPH.
Hence, In plants and algae, water is the source of the electrons needed for photosynthesis, which is present in Option A.
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The question is incomplete, complete question is below
In plants and algae, _____ is the source of the electrons needed for photosynthesis.
A)water
B)oxygen
place the steps of electron transport into the correct order
Answer:
Here is the answer
Explanation:
Mark me as brainlist pls
ATP synthase molecules in mitochondria form dimers that are localized mostly to sharp cristae ridges. What should happen if subunits of the synthase that are required for dimerization are mutated in yeast?
Answer: To increase the capacity of the mitochondrion to synthesize ATP, the inner membrane is folded to form cristae. These folds allow a much greater amount of electron transport chain enzymes and ATP synthase to be packed into the mitochondrion.
Explanation: i got it right
Answer:
The insufficient ATP synthase phosphorylating capacity with respect to the respiratory chain results in an impaired energy provision and an increased ROS production due to an elevated mitochondrial membrane potential (1,16).
Explanation:
hello humans ~
Among the following which cell can be seen with an unaided eye?
A. Hen’s egg
B. Red blood cell
C. Sperm cell
D. Nerve cell
Answer:
B. Red blood cell
Hope it helps!!!brainliest pls!!!Answer:
Red blood cellExplanation:
Red blood cell can be seen with an unaided eye
The process of transcription and translation is used to create
Group of answer choices
proteins.
nucleic acids.
thymine.
phosphate groups
New experimental data does not support a currently accepted hypothesis. Which course of action should the researcher take?
Answer:
ok so basically the researcher should quit his job cus hes an idiot.
hello people ~
Differentiate between s3xuaI & as3xuaI reproduction.
Answer:
As3xual reproduction produces offspring who are nearly identical to one parent.
Two parents contribute genetic information to make unique offspring through s3xual reproduction.
Explanation:
Asexual Reproduction
Occurs in prokaryotic microorganisms and in some eukaryotic unicellular and multicellular organisms, lower invertebrates and plantsGametes are not formed. Somatic cells of parents are involved. No fertilization occurs.Sexual Reproduction
Occurs almost in all types of multicellular organisms including humans, animals, and higher plants.Gametes are formed.Germ cells of parents are involved.Fertilization takes placeWhich organelle would you find in BOTH plant cells and animal cells?
1. a cell wall
2. chloroplasts
3. large vacuoles
4. mitochondrion
Answer: Choice 4
Explanation: Mitochondrion