Answer:
The process of gene flow
Explanation:
Gene flow refers to the transference of genetic variation from one population to another. High rates of gene flow are known to modify the allele frequencies and reduce genetic differences among groups. Gene flow limits the process of speciation by combining gene pools form different groups. In humans, for example, it has been shown that migration in the past decreased genetic variation among their populations, thereby leading to the homogenization of genotype frequencies among geographic groups. It is for that reason that in population genetics the concept of 'human races' is now often recognized as erroneous and inadequate.
How do paleontologist use known evidence to make their observations? What are 2 of their observations
Answer:
Explanation:
Paleontologists are scientists that use fossil records to study the history of life on earth. They use known evidence/fossils such as bones, prints (on land or sea), dead remains to determine evidence and history of past life on earth.
Some of there observations include the use of comparative anatomy to determine possible evolution. They also use carbon dating to determine approximately how long a fossil/bone has been in existence.
Benefits and Consequences of Technology As Hite and Seitz (2016) discuss in Chapter 8: Technology, technological advancements and changes may affect how we can work to find solutions for the global threats discussed so far. Technological advances can and do affect development in positive and negative ways. Besides biotechnology, identify one technology that seems to have the greatest potential positive effect on food security. Discuss any potential negative uses of that technology. Do the benefits of these technologies outweigh the potential negative consequences they have on food security
Answer: Digital technology
Explanation:
Digital technology is a technology that helps show that devices can be more compact, faster, lighter, and more versatile and that information can be stored locally or remotely without minding the capacity and moved around instantaneously and conviniently . It has been a catalyst for efficiency of innovation this recent times.
Digital technology have been the basis for precision agriculture, geographic information system a technology that has helped agriculture to be more precise and apt.
Precision agriculture include the use of computerized system/Remote sensing to monitor a field or farm on the appropriate amount of a particular input that is needed and where exactly. It has been used for fertilizer application, herbicide application and it has reduce wastage to the minimum and efficiency is ensured in terms of output and this has helped food insecurity. The potential benefits of digital agriculture outweighs its disadvantage.
List the 6 possible genotypes of the four blood types. Identify the parentalgenotypes that could produce children with blood type AO.
Answer:
The different possible genotypes are AA, AO, BB, BO, AB, and OO. These are derived according to the A, B and O blood group model.
The table is given below:
Blood Type Genotype
Blood Type A Genotypes AA or AO
Blood Type B Genotypes BB or BO
Blood Type AB Genotype AB
Blood Type O Genotype OO
The alleles A and B exhibit a greater dominance than O. This is the reason why the Parent of Blood type A will form the Genotype AO.
What is a risk of using chemical pesticides on crops?
In addition to the repair of DNA double-strand breaks, homologous recombination is a mechanism for generating genetic diversity by swapping segments of parental chromosomes. During which process does swapping occur?
Answer:
during cell division (meiosis)
Explanation:
During meiosis, DNA double-strand breaks (DSBs) between homologous chromosomes are induced and, after the exchange of DNA pieces, breaks are jointed by specific DNA-repair enzymes (such as DNA glycosylases). DSBs can be repaired by two different mechanisms: non-homologous end-joining (NHEJ) and homologous recombination (HR), which have different functional consequences. These mechanisms of recombination have potential for increasing the genetic variation since the resulting gametes will contain a different set of chromosome fragments.
our blood is able to maintain a ph of about 7.5 because our body acts like a buffer solution. regulating ph is crucial so that our protein structures remain intact and functional. which statement about human protein in the body is not correct
The given question is incomplete as the group of choices are missing, however, the group of choices are given as follows:
Select one
a. Protein consists partially of amine groups that are neutral as a result of protonation (of one H ion)
b.Protein contains deprotonated carboxylate groups, resulting in a negative charge
c. The carboxylate groups in protein act very much like carboxylic acid groups (-COOH), except that they are deprotonated
d. If the human body did not act like a buffer solution, each time you ingested an acid the carboxylate groups would protonate, causing the protein structure to disintegrate.
Answer:
The correct answer (incorrect statement) is : option C.
Explanation:
pH of blood should be remain 7.5 in order to make proteins of the body and blood intact and functional. Human protein have neutral amine group due to the protonation and negative carboxylate group due to the deprotonation.
carboxyl group behave like an acid and carboxylate group behave like a base due to the fact that Carboxylate group (-COO-) is conjugate base of Carboxyl group. Human body acts like buffer to prevent the protein from disintegrate.
Thus, the correct answer is : option c.
Hypothesize about human impact on each of Earth’s systems. Geosphere: Hydrosphere: Atmosphere: Biosphere:
Answer: the answer is biosphere I’m not sure correct me if I’m wrong
Explanation:
Which of the following factors cause variations in seawater density, leading to ocean currents? 1- Sun's gravity 2- Wind 3- Moon's gravity 4- Temperature and salinity
Temperature and salinity
Answer: Temperature and Salinity
Explanation:
Temperature and salinity both contribute to variations in seawater density. Variations in seawater density cause currents to start flowing from low-density regions to high-density regions.
Proper insertion of the needle into the cricothyroid membrane involves a ___ angle toward the ________.
Answer:
The correct answer is "45 degrees; feet".
Explanation:
The cricothyroid membrane, also known as the cricothyroid ligament, is comprised of a yellow elastic tissue attached to the cricoid cartilage. One of the most common treatments for vocal nodules involves the injection of the cricothyroid membrane with local steroids. Proper injection of this area involves inserting the needle in a 45 degrees angle toward the feet. This helps to avoid the blood vessels located in the surroundings.
Mike wanted to know if the weight of the chickens affected the number of eggs they laid each day. Which of the following graph axes is correctly labeled for showing his results?
Answer:
The weight of chickens would be on the x-axis (horizontal) and number of eggs would be on the y-axis (vertical)
Explanation:
The number of eggs a chicken has is dependent on the weight of the chicken
Which gas is responsible for global warming and Which gas is responsible for ozone layer depletion?
Answer:
Green house gases like carbon dioxide, carbon monoxide, carbon tetra chloride, methane, sulphur dioxide, nitrogen dioxide, etc .. are responsible for Global warming and Chlorofluorocarbons and nitrides of oxygen are responsible for Ozone layer depletion.
Explanation:
One of the first things the IPCC concluded is that there are several greenhouse gases responsible for warming, and humans emit them in a variety of ways. Most come from the combustion of fossil fuels in cars, buildings, factories, and power plants. The gas responsible for the most warming is carbon dioxide, or CO2.
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
how will ATP synthesis from glucose metabolism change in muscle cells deficient in triose phosphate isomerase
what are the disc shaped membranous structures inside of the chloroplast where the light-dependent reactions take place
Answer:
These are the thylakoids
Explanation:
The thylakoids which contains the chlorophyll is the primary site of photosynthesis. It is covered by layers of cell called the thylakoid membrane.These are the actual site for light dependent reaction.This membrane contains both photosytem I and ii, ATPase enzymes, and Cytochrome b6f complex.While the photosystem i and ii transfer elecrons during photosynthesis, the ATPase enzyme control the catalysis the phosphorylation of ADP to ATP needed for the light independent stage, the Cytochrome proteins acts as the ETC. involved in the transfer of electron during light dependent stage.
When thylakoids are packed together in disc shape they are refer to as Grana,(singular -granum).Each grana are linked together by intergrana.Thus two or more grana are linked by intragrana to form a single photosynthetic functioning unit.The entire structure is bath continuously by the fluid medium-Stroma.
Their stacked and disc shape is to increase the surface area available to accommodate enough ETC, needed to transport electron for chemiosmosis needed for photosynthesis.
DNA sequences that direct RNA polymerase to the initiation site are called ______________.
Answer: promoters
Explanation:
Promoters are DNA sequences that direct RNA polymerase to the initiation site. Promoter sequences are simply DNA sequences that helps in defining where the gene transcription by RNA polymerase will start.
Promoter sequences are located directly upstream and are an important part of the expression vectors as the binding of DNA to the RNA polymeras are being controlled by them.
Which of these instruments can show the arrangement of atoms on the surface of a molecule? 10 points A) scanning tunneling microscope (STM) B) compound light microscope C) scanning electron microscope (SEM) D) transmission electron microscope (TEM
Answer:
A) scanning tunneling microscope (STM)
Hope this helps :)
what gas is on the reactant side of photosynthesis
Answer:
The oxygen gas
charles darwin is credited with outlining the principles of evolution by natural selection. what aspects of the scientific method can be identified in darwin's work
Answer:
Charles Darwin's work followed the rules of hypotheses creation and testing.
In order to prove a scientific suspicion, a true scientist has to follow the above methods.
So Darwin probably theorized that the offspring of certain living entities were by either environmental conditioning or by natural selection different genetically from their parent.
He tried this hypothesis over time and using the results he got, modified his theory.
Cheers!
does the chalazae serves to anchor the egg yolk to the albumin?
Answer:
Ropy twisted strands of albumen
Anchor yolk to center of thick egg white
Explanation:
Processing organic material into fuel is called?
True or False After the lac repressor attaches, DNA polymerase is able to transcribe the genes of the lac operon.
Answer:f
Explanation:
What statement is true all living organism? A-they shrink and divide B-They develop but don't grow C-They grow but don't develop D-They grow and develop
Answer:they grow and develop if I remember correctly so I would say d
Explanation:all living organisms like and thrive in different environments and it’s in an organisms in nature to survive and reproduce
Which of the following answers relates to a quick energy source and lactose?
A. Carbohydrate
B. Lipid
C. Protein
D. Nucleic Acid
Answer:
A. Carbohydrate
Explanation:
How was cell discovered?
Answer:
The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope.
How would you write this number in scientific notation? (Use the carrot key to denote an exponent. ex: 6.02 x 10^23)
5,890,000,000,000 (The distance to the sun in km)
pls help.
Answer:
[tex]D=5.89\times 10^{12}\ km[/tex]
Explanation:
The distance to the Sun is 5,890,000,000,000. We need to write this distance in km.
A number can be written as [tex]x.0\times 10^y[/tex] in scientific notation where x is a real no and y is any integer.
There are 10 zeros in the given number and also there are 12 digits after. It would mean that,
[tex]D=5.89\times 10^{12}\ km[/tex]
So, the distance in scientific notation is : [tex]D=5.89\times 10^{12}\ km[/tex]
A period in 24-point font (.) is about 1mm in diameter. SARS-CoV-2 has a diameter of 80 nm. The prefix “milli” means 1000, which tells you there are 1000 millimeters (mm) in a meter. The prefix “nano” means 109 (1 billion), which tells you there are 1 billion nanometers (nm) in a meter. Approximately how many SARS-CoV-2 viruses could fit in that period? (Hint: There are 106 nm in 1mm).
Answer:
A total of 12,500 SARS-CoV-2 viruses
Explanation:
Consider a trillion against a thousand, there exists a difference of a million, which means a nanometer will be a million times smaller as compared to one millimeter:
see below for a milli divided by nano
1/1000 ÷ 1/1000,000,000 = 1000,000,000 ÷ 1000 = 1000,000
(in reference to the hint given in the question statement)
The question puts one millimeter against 80 nanometers. The calculation for this will be given as follows:
1/1000 ÷ 80/1000,000,000 = 1000,000,000 ÷ 80,000 = 12,500
According to the above working, there are 12,500 SARS-Cov-2 viruses thatg can fit into one period.
Which of the following statements about translational termination is correct?A. Accessory proteins called elongation factors recognize the stop codon in the mRNA to terminate translation.
B. The ribosome keeps translating until it reaches the end of the mRNA and falls off the transcript.
C. Peptidyl transferase breaks the bond between the growing polypeptide chain and the tRNA in the P site, but there is no new charged tRNA in the A site, which results in the termination of translation and release of the polypeptide.
D. A special stop-tRNA enters the A site and terminates translation.
E. Rho proteins bind to the mRNA when the ribosome pauses and stops translation.
Answer:
C
Explanation:
The correct answer here would be that the peptidyl transferase breaks the bond between the growing polypeptide chain and the tRNA in the P site, but there is no new charged tRNA in the A site, which results in the termination of translation and release of the polypeptide.
The translation process stops when the stop codon in the mRNA being translated enters site A in the translation complex. When this happens, the release factor recognizes the stop codon and makes the enzymes that form peptide bonds to add water to the last amino acid on the chain.
The addition of water leads to the breaking of the peptide bond by peptidyl transferase, causing the separation of the polypeptide chain from the tRNA and the eventual release of the protein.
Hence, the correct option would be C.
How would life be without television
Answer: Better and worse
Explanation: It would be better because then your not watching all this nonsense that you don't need to know, and because then you wouldn't be up in the house all the time watching TV to where, you stop excersing and spending more time with your family.
I could be worse because there are some edencational stuff on TV like the news, we wouldn't have entertainment.
Hope this helps^^
Which is not a source of funding for scientific research?
A. Government agencies
B. Scientific meetings
C. Private foundations
D. Emerging industries
Answer: Option D.
Emerging industries
Explanation:
Emerging industries is not a source of funding scientific research because the industries have not sustain the financial capability and stability to release funds or fund scientific research because they are still growing and they are not yet established and durable financially.
The emerging industries have to be well established and make alot of financial profits before they can find scientific researches.
What happened to the glomerular capillary pressure and filtration rate when you decreased the radius of the efferent arteriole
Answer:When the radius of the efferent arteriole become decreased, the stress and filtration rate each increased. When the radius of the efferent arteriole become increased, the stress and filtration rate each decreased. When you growth the blood stress, glomerular capillary stress and filtration rate will growth.
Explanation:
What biological macromolecule is made up of monomers like the one shown below?
A molecule with an amino group, carboxylic acid, hydrogen atom, and R group bonded to a central carbon atom.
Lipid
Nucleic acid
Protein
Carbohydrate
Answer:
Protein.
Explanation:
Proteins consist of an R group/carboxylic acid unlike any of these. Look at this image- hope it helps
Answer:
protein
Explanation: