(True or False) The replication of DNA requires little to no energy expenditure
Answer:True
Explanation: The process of breaking the hydrogen bonds between the nucleotides of the double helix strand of the DNA requires energy.
***HELP*** What is the role of a keystone species?
Limiting the abundance of a competitively dominant species
Populating the ecosystem to decrease diversity
Exploiting the key resources in an ecosystem
Competitively dominant to other organisms in the ecosystem
Answer:
D. Competitively dominant to other organisms in the ecosystemA keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.
Hope that helps! :)
-Aphrodite
Explanation:
How do we know whether or not a heteromorphic chromosome such as the Y chromosome plays a crucial role in the determination of sex
The Y chromosome contains the "male determining gene," the SRY gene. This gene causes testicles to form in the embryo and results in the development of male genitalia. The SRY gene is important in sex determination in mammals and some insects.
Chromosomes are part of the structure of the human body, which consists of DNA and other molecules, and is the place where genetic material is stored.
To determine sex, the so-called X and Y chromosomes. If the embryo's chromosomes are XX, then it is female. Conversely, if the XY chromosome then the fetus will be born as a boy
Sex chromosomes are usually heteromorphic, that is, they show differences (size, shape, or reaction to staining) between their homologous chromosomes. Individuals having heteromorphic sex chromosomes can produce two types of gametes. For example, human males can produce gametes that have 22+X or 22+Y chromosomes.
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which 'omics technology requires reverse transcriptase?
a. metabolomics
b. RNA seq
c. genomics
d. proteomics
e. ChIP-seq
Answer:
d. proteomics i think
Explanation:
Omics technology requires reverse transcriptase in the filed of proteomics. Thus, the correct option is D.
What is Omics technology?
Omics technologies are the field of science which primarily aims at the universal detection of genes which is genomics, transcriptomics in the detection of mRNA, proteomics for the detection of protein, and metabolomics for the detection of metabolites in a specific biological sample. Omics technologies have a broad range of applications in research.
Omics technologies aim at the collective characterization and quantification of the pools of biological molecules and samples that translate into structures, functions, and dynamics of an organism or a group of organisms.
Therefore, the correct option is D.
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What is the function of the repressor in the E. coli lac operon?
O A repressor is a type of DNA sequence which activates or inactivates the expression of the lac operon genes by acting as a protein binding site. O A repressor is a type of protein that inactivates the expression of the lac operon genes by binding to the DNA of the lac operon. O A repressor is a type of DNA sequence that is located outside the lac operon and expresses the protein that controls lactose gene expression. O A repressor is a type of DNA sequence that activates the expression of the lactose genes by acting as an RNA polymerase binding site for the lac operon.
Ded by a DNA sequence called as a repressor. A repressor is a DNA sequence that activates expression.
What is protein?Explain protein. Protein makes up the majority of the body's organs, tissues, and body parts, include muscle, bones, skin, and fur. It helps to produce enzymes, which power countless chemical reactions, and hemoglobin, which carries oxygen in the blood.
What benefits does protein offer?Protein is an essential part of the processes that give you energy and enable your blood to carry oxygen throughout your body. In addition, it encourages the creation of antibodies that fight off illnesses and infections, keeps
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PLS HELPPPPPPP DUE TODAY!!!!!!
All fishes have a(n)
A) internal skeleton
B) external skeleton
C) cartilaginous skeleton
D) Bony skeleton
E) Soft skeleton
Answer:
B is the answer
Explanation:
if im wrong sorry
Select the best answer for the question
19. Why do the proportions of sand, silt, and clay in a soil matter?
O A. Silt should be conserved but not other types of soil.
O B. Plants grow in clay but not other types of soil.
O C. Microorganisms live ingome but not all types of soil.
O D. This determines the texture and water retention of soil
Answer:
Explanation:
D
What is a renewable resource?
A. A resource that can be used up, but will take hundreds of millions of years
B. A resource that cannot ever be used up
C. A resource that is hard to generate
D. A resource that is easy to generate
A chemical equation is shown below. Which substance below is NOT a product in this equation?
Answer:
you didnt give us the equation
Explanation:
The purpose of this experiment is to separate the pigments to identify each pigment by their color properties and how far they travel using paper chromatography.
The purpose of this experiment is to separate the pigments to identify each pigment by their color properties and how far they travel using paper chromatography is the goal of the experiment separation of pigments by paper chromatography.
Paper chromatography is a separation method in the form of color propagation that can be seen on the chromatography paper and the spots that are there to compare the spots from the sample and the spots from the standard.
Filter paper in paper chromatography is used as a stationary phase in the separation process. The selection of filter paper used is one of the determining factors for success in chemical separation and analysis. So in paper chromatography experiments the dyes will be distributed, so that the pigments can be easily separated and identified based on their color properties.
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I need someone to explain this
Light energy is captured in the process of photosynthesis which stores the energy in organic molecules to be used in the process of respiration.
What is Photosynthesis?This is referred to as the process in which green plants manufacture food in the presence of sunlight which is stored in the molecular bonds of organic molecules such as sugars.
It is used during the process of respiration by cells of the body and it involves the production of energy from the oxidation of complex organic substances as result of the body taking in oxygen and giving off carbon dioxide which is therefore the reason why they were chosen as the correct choices.
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Hydrogen bonds are __ times weaker than covalent bonds so they are easily broken
1
10
100
1000
Explanation:
10
please mark me brainliest if it helps you then plzz
Answer:
The correct answer is actually 100x weaker.
Explanation:
They have energies of 1–3 kcal mol-1 compared to roughly 100 kcal mol-1 for a carbon-hydrogen covalent bond.
Hope this helps ya! Have a good day!Can bacteria live in a wide range of environments?
Bacteria are able to survive in wide range or environments like mountains, springs, guts of organisms etc.
Bacteria are unicellular or single-celled organisms which have the ability to survive in a wide variety of conditions. They can be found almost everywhere in the environment.
Bacteria which can withstand very high temperatures are found in hot springs. They can also be found frozen in the ice of Antarctica and other cold places. Bacteria are also found on top of cold mountains and are found to thrive in the aquatic environment of seas and oceans. Although most bacteria thrive in neutral environment, a lot of them are able to survive in highly acidic environments.
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The illustration shows bones and for animals the bones labeled they are known as?
Answer:
homologous structure
Explanation:
or each sequence of DNA is shown. Write the complementary RNA sequence underneath the letters, thenuse the codon chart to determine the amino acid sequence:DNA → A C A T T T C A G A C C G T C
Answer:
UGU-AAA-GUC-UGG-CAG
Cys, Lys, Val, Trp, Gln
Explaination:
Apples Under Trees
That sentence will make sense in a second,
A(Adenine) goes with T(Thymine)
G(Guanine) goes with C(Cytosine)
Ex: CAT
->GTA
That's DNA's complementary DNA sequence.
For DNA converting to RNA
(Where Apples Under Trees comes in)
T(Thymine) will be replaced with U(Uracil)
Ex: CAT
->GUA
Codon chart:
For the codon chart, I like to use the circle one.
Steps:
We will be finding the sequence GUA :)
1. Find the first FOUR boxes in the middle. (Color Coded tan)
We have G first, so go on to the next section.
(as you can see the codon chart is split into four sections)
2. Find the next letters (Color coded light green) and find U because that's the letter after G.
3. Find the next letters (Color coded white) and find the amino acid the letter matchs to.
If you got VAL you did it correctly :)
A template strand of DNA is TACCGATTGCA
What is the complementary DNA strand that is created from this template during
replication?
A. TGCAATGCCTA
B. TAGGCATTGCA
C. AUGGCUAACGU
D. ATGGCTAACGT
Answer:
ATGGCTAACGT so D
Explanation:
because in DNA adenine always pairs with thymine and Cytosine with Guanine. you can also remember them as Apple Tree and Car Garage.
What is the source of carbon for the organisms of food chains?
Answer:
The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.
Explanation:
What are the primary methods of confirming endotracheal tube placement within the trachea NRP 8?
Primary methods of confirming endotracheal tube placement within the trachea is Demonstration of exhaled carbon dioxide (CO2) and a rapidly increasing heart rate.
Endotracheal intubation can be done either as an emergency procedure (e.g., for diaphragmatic hernia, severe airway anomalies, failure of mask ventilation, prolonged ventilation, endotracheal tube (ETT) change, or instillation of surfactant) or as an elective or semi-elective surgery.
Chest radiography can be used to validate ETT location, but this procedure is sometimes delayed. As a result, a number of quick point-of-care techniques to verify proper tube placement have been developed, including clinical symptoms, exhaled CO2, respiratory function monitors (RFMs), and ultrasound.
Radiology of the chest The proper tube position within the trachea, which should be just below the level of the vocal cords and significantly above the carina, can be confirmed using a chest radiograph. Before X-ray confirmation, various methods have been documented to place the tube over the carina.
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As organs and organ systems continue to develop in this embryo, the eyes will contain clear, transparent lenses. How does a single group of cells differentiate to produce both the transparent lens cells as well as all the other specialized cells in the completed organism
Throughout embryonic development, a single group of cells, known as the ectoderm, differentiates to form a variety of specialized cells that make up the body of a completed organism.
One example of this is the development of the eyes, which contain clear, transparent lens cells. In order to understand how a single group of cells can differentiate to form such diverse components, it is important to understand the underlying cellular processes that drive this differentiation.
First, the ectoderm of the embryo undergoes a process known as gastrulation. During this process, the ectoderm begins to fold and divide, producing three distinct layers of cells known as the endoderm, mesoderm, and ectoderm.
As the cells differentiate, they begin to express different proteins on their surfaces which become the basis for further cell-to-cell interactions and signaling. This process is known as inductive signaling and is responsible for the development of the specialized cells in the embryo.
The inductive signaling process is responsible for the formation of the transparent lens cells in the eye. As the ectoderm begins to differentiate, certain cells in the mesoderm will receive signals from the ectoderm to begin the process of lens formation. The lens cells then produce proteins that induce the formation of other specialized cells in the eye, such as the cornea and the iris.
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True or false? Water molecules move into and out of cells through the cell membrane by active transport.
The statement "Water molecules move into and out of cells through the cell membrane by active transport" is definitely false.
What is Active transport?Active transport may be defined as a type of transport that significantly occurs against the concentration gradient and is mediated with the help of carrier proteins. In this type of transport, metabolic energy is utilized in order to migrate ions or molecules against a concentration gradient.
Water molecules throughout the cell are mediated by the process of diffusion where ions are molecules that generally migrate from the region of higher concentration to the lower concentration through a semi-permeable membrane.
Some examples of active transport include the passage of sodium and potassium ions through the sodium-potassium pumps.
Therefore, the statement "Water molecules move into and out of cells through the cell membrane by active transport" is definitely false.
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Propose an explanation for how a single amino acid substitution could cause such a dramatic difference in the final shape of red blood cells
A single amino acid substitution in a protein can cause a dramatic difference in the final shape of red blood cells through changes in the protein's conformation.
Proteins are composed of a sequence of amino acids and their three-dimensional structure is determined by the interactions between different regions of the protein, such as the hydrogen bonds, electrostatic interactions, and hydrophobic interactions. These interactions help to keep the protein in its specific conformation, which is essential for its function. A single amino acid substitution can alter these interactions and disrupt the protein's conformation. This can lead to changes in the shape and properties of the protein.
In the case of red blood cells, a single amino acid substitution in a protein that is responsible for maintaining the shape of the cell can cause the cell to change shape. For example, a substitution in the protein spectrin, which is a component of the cell membrane, could cause the membrane to be more or less flexible and thus resulting in a change in shape of the red blood cell. This change in shape can affect the mechanical properties of the cell and can have a significant impact on its ability to flow through capillaries and deliver oxygen to tissues.
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What are the levels of organization within the human body from the most simple to the most complex?
a.organ, organ system, cell, tissue, organism
b.cell, organ, tissue, organ, organ system, organism
c.cell, tissue, organ, organism, organ system
d.cell, tissue, organ, organ system, organism
Answer:
D. cell, tissue, organ, organ system, organism
Explanation:
also before cells there are also (and in order) atoms, molecules, organelles
(have a great day!)
;)
can anyone help me with this , please! need help asap ill give brainliest ( i inserted a picture)
Answer:
Small core, 30 coils
Explanation:
That's what the bar graph says
Brainliest pls!
Answer:
the first circle the 30 small coil
Explanation:
What data or test would you seek to determine whether or not a trait is sex linked? Select one: a. karyotype b. pedigree c. blood test d. DNA sequence
B) You would seek to determine whether a trait is sex-related using pedigree data or a test.
From a pedigree, how can you tell if a trait is sex-linked?A sex-linked pedigree will primarily have affected males, and the female carriers will typically be marked with a half-shaded circle.
In a pedigree, how can you tell if a sex-linked trait is dominant or recessive?The son must have only inherited his allele from his mother if the trait is x-linked, and the father may not be affected. RECEPTIVE WITH X-LINKS: The disease must be X-linked recessive when a affected non-founding son has two parents who are unaffected.
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The man and woman do not have SCA. However, each has one parent with the disorder. What are their genotypes? Then, find the chance their child has SCA
Answer:
What are their genotypes? They are both heterozygous for the trait, SsFind the chance their child has SCA. There is 25% of probabilities (1/4) that their child has SCA.Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Which of the following is a benefit to
free-range agriculture?
A. decreased prevalence of disease
B. increased prevalence of disease
C. increased use of antibiotics
D. increased numbers of animals in cages
Answer:
The answer is A. decreased prevalence of disease
using the terms antigens and antibodies, explain why the tumor cells are ignored by the immune system in a Tasmanian devil
Answer:
In the case of a Tasmanian devil, the tumor cells may be ignored by the immune system because they do not have foreign antigens on their surface that are recognized as a threat. Without these foreign antigens, the immune system does not produce antibodies to attack the tumor cells. As a result, the tumor cells are not recognized as a threat and are allowed to grow and multiply without being attacked by the immune system.
It is also possible that the tumor cells in a Tasmanian devil may produce their antigens that mimic the antigens found on normal cells in the body. If this occurs, the immune system may recognize the tumor cells as normal and not produce antibodies to attack them.
Overall, the immune system's ability to recognize and attack foreign substances is a crucial part of its function. However, in some cases, the immune system may not recognize certain cells as a threat, leading to the growth and proliferation of abnormal cells such as tumor cells.
Can someone help me please? if you've done the nitrogen cycle on gizmo about the blue baby syndrome please respond
Gizmo High nitrate levels in a newborn's drinking water are typically the cause of the blue baby syndrome. To save other babies from getting sick and to identify the source of the elevated nitrates is crucial.
Blue infant syndrome is most frequently brought on by nitrate-contaminated water. A baby's body turns nitrates into nitrites after consuming formula prepared with nitrate-rich water. The body's haemoglobin binds to these nitrites to generate methemoglobin, which cannot transport oxygen.
A well-known risk factor for child methemoglobinemia is preparing infant formula using drinking water that has been polluted with nitrogen cycle. Infants that are affected have strange blue-gray skin and, depending on the degree of their disease, may become agitated or sluggish.
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The geyser basin hot springs at Yellowstone National Park is a great place to observe the growth of thermophiles, microbes that can live in extremely hot waters. True False
The hot springs of Geyser Basin in Yellowstone National Park are a great place to observe the growth of thermophiles. Thermophilic microorganisms can live in very hot water. This statement is true.
The term "thermophile" refers to bacteria that can grow at temperatures up to 55°C (minimum 45°C, optimum temperature range 55-65°C, maximum 80°C). Hyperthermophiles (extreme thermophiles) are microorganisms that can grow at temperatures as high as 113°C, ideally 80°C. Examples include Bacillus stearothermophilus, Thermoplasma acidophilus, and Thermus aquaticus.
Hot springs are often home to microbial communities adapted to life in hot, mineral-rich waters. Oxygen and light levels are lower in hot springs. Almost all hot springs and geysers are home to thermophilic bacteria.
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