Answer:
See explanation
Explanation:
According to the theory of evolution,species which are better adapted to their environment tend to survive and reproduce in a population passing on these favourable characteristics to their offsprings.
During sexual reproduction, genes can be arranged in new ways from chromosomal crossing over and recombination. This introduces new gene combinations(genotype) and ultimately variation in the population.
This variation may also lead to the observation of new phenotypes in the population.
Listeriosis is of particular concern for pregnant women because pregnant women are more likely than other population groups to get listeriosis. listeriosis can cause fetal death. Listeria bacteria can cross the placenta and infect the fetus. All of the choices are correct.
Answer:
The correct answer is ''All of the choices are correct.''
Explanation:
Pregnant women are a risk group for listeriosis, the disease caused by the Listeria monocytogenes bacteria found in contaminated food. This organism can cross the placenta and affect the fetus. Due to the decrease in cellular immunity, pregnant women are part of the population at risk and are 17-20 times more likely to develop listeriosis after the consumption of contaminated food and it usually occurs from the third trimester and appears as a disease mild with not very high fever, joint and muscle pain. Listeriosis can cause miscarriages during the first three months of pregnancy. As the third trimester is reached, the mother is at greater risk. It presents a 40-50% fetal or neonatal mortality. In the first or second trimester it produces septic abortions and intrauterine fetal death, in the third trimester she produces chorioamnionitis and premature labor. In 1/3 cases it can occur asymptomatically in the fetus / neonate. In newborns, listeriosis can cause blood infections and meningitis.
ciri ciri tumbuhan telah mengalami perkembangan
Answer:
Is that another language
An experimental herbicide kills plants by blocking the ATP synthase in thylakoids. This is most likely to: Group of answer choices Decrease the pumping of NADPH across the thylakoid membrane Increase the pH of the chloroplast stroma Decrease of flow of electrons from photosystem II to photosystem I Decrease the concentration of ATP in the thylakoid space
Answer:
Decrease the pumping of NADPH across the thylakoid membrane
Decrease of flow of electrons from photosystem II to photosystem I
Explanation:
Thylakoids are defined as a membrane-bound compartments located inside the chloroplasts and the cyanobacteria. Here, light-dependent reactions of photosynthesis occurs.
To block the photosynthesis process, the herbicides pushes the dichlorophenyl dimethylurea to block the electron flow through the photosynthesis II and it reduces the flow of electrons from photosystem II to photosystem I. It also decreases pumping of the NADPH across the thylakoid membrane.
___ is the ability of an organism to change internally to externally in relation to its environment
Answer:
The ability of an organism to change internally or externally in relation to changes in the environment is called Homeostasis. (I'm pretty positive this is the answer and I hope you have an awesome day :)
To find the gene that encodes for the blue-light receptor, researchers inserted the gene for the PHOT1 protein into insect cells growing in culture. When they exposed the transgenic cells to blue light, they found that they PHOT1 protein became phosphorylated. No other plant proteins were present in the insect cells. Which of the following is a reasonable conclusion from this result?
A. The PHOT1 protein enabled the insect cells to photosynthesize.
B. The PHOT1 protein phosphorylated itself in the presence of blue light.
C. The PHOT1 protein is not responsive to blue light.
D. The PHOT1 protein is not functional in insect cells.
Answer:
я не знаю ответа извините
Explanation:
Tại sao khi chi bị đau một bộ phận nào đó trong có thể những ta vấn thấy toàn có thể bị ảnh hưởng ?
Answer:
Sorry I can't understand anything
When the flow of water cuts very deep channels through the earth *
2 points
Answer:
It carves deep into the rock and soil it flows over. Mountains streams cut narrow V-shaped channels
Explanation:
what are 2 easy difference between jellyfish and starfish
Answer:
Starfishes have a relatively rudimentary organ system level of body organisation, whereas jellyfishes have merely a tissue system level of body organisation. 2. The body of a jellyfish is transparent and squishy, but the body of a starfish is opaque and has a hard Calcium Carbonate exoskeleton.
Why is avian influenza (H5 N1) rarely transmitted from poultry to humans? Why is it is often lethal
in humans? Why is it rarely spread from person to person?
Answer:
Lacks the right key to unlock many cells.
Explanation:
Avian influenza (H5 N1) rarely transmitted from poultry to humans because it lacks the right key to unlock many cells in the upper respiratory tract so due to this action the virus is rarely transmitted to humans. Sometimes it is lethal to humans due to absence of antibodies for this type of virus. It is rarely spread from person to person due to inability to enters the other human body.
Which of the following best defines gene flow?
the sum of all genetic traits in a population's individuals at a given time any movement of genes from one population to another any movement of organisms from one environment to another the random change in the frequency of an allele in a population
Gene flow — also called migration — is any movement of individuals, and/or the genetic material they carry, from one population to another. Gene flow includes lots of different kinds of events, such as pollen being blown to a new destination or people moving to new cities or countries.
Answer: any movement of genes from one population to another.
Explanation: :)
The raw material used by plants during photosynthesis N2and O2 O2,H2 and CO2 CO2 and water water and minerals
Answer:
Thus, the correct answer is 'Carbon dioxide, water, and sunlight'.
Which correctly describes Earth's population over the centuries?
O A. It has risen steadily.
B. It has remained steady overall.
C. It has risen at an increasing rate.
O D. It has declined in some places due to migration.
SUBM
Earth's population over the centuries has risen at an increasing rate. So, the correct option is C.
How the population of Earth is increasing?This sharp increase in population has been primarily caused by an increase in the proportion of individuals reaching breeding age, the gradual extension of human life expectancy, growing urbanization, and quickening migration. This expansion has been accompanied by significant changes in the fertility rate.
One of the key reasons for India's population expansion is a drop in death rates brought on by better medical services and a steady birth rate. The widespread illiteracy in India makes people believe that "children are god's blessings," which makes them opposed to the idea of "family planning." Earth's population over the centuries has risen at an increasing rate.
Therefore, the correct option is C.
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Los hámsteres tienen 22 cromosomas y sus células haploides. ¿Cuántos cromosomas hay en su célula diploide heredera?
Answer:
El hámster Sirio posee 44 cromosomas (22 pares de cromosomas) en sus células somáticas diploides, mientras que el hámster chino posee 22 cromosomas (11 pares de cromosomas) en sus células somáticas diploides
Explanation:
Un individuo es haploide (n) cuando sólo posee un juego de cromosomas en el núcleo celular, mientras que un individuo es diploide (2n) cuando posee dos juegos de cromosomas. En general, los organismos pluricelulares diploides poseen dos tipos tipos de células: 1-germinales (gametos) haploides y 2-células somáticas diploides. El hámster Sirio posee 22 pares de cromosomas, es decir 44 cromosomas (2n=44) en sus células somáticas diploides y 22 cromosomas en sus células germinales haploides, es decir, en sus óvulos (gametos femeninos) o espermatozoides (gametos masculinos) cuya fusión durante el proceso de fertilización da lugar a un cigoto diploide. Por otra parte, el hámster Chino, el cual se considera un organismo modelo en citogenética, posee 22 cromosomas en sus células diploides (2n=22) y 11 cromosomas (n=11) en sus células haploides.
Helpppppp please!!! How do membrane proteins contribute to the membrane potential?
Answer:
the answer is B
Explanation:
the answer is b
Antidiuretic hormone (ADH) is produced by the pituitary gland when the brain detects lower than optimum levels of water in the body. In the kidneys, ADH promotes the uptake of water, creating more concentrated urine. ADH travels from the pituitary gland to the kidney through the ________ system.
Answer:
circulatory system
Explanation:
ADH travels in the bloodstream to the kidneys
How many different genotypes are possible from a cross between the parents RRYy and rrYY?
Answer:
1 genotype is possible
RrYy
how has technology changed farming
a- there are fewer farms than there used to be
b- farmers use mechanical devices to do my tasks.
c-farmers produce less food than they used to.
d- pesticides are no longer used on most farms
Answer:
b
Explanation:
farmers use mechanical devices to do many tasks
I hope this helps
Why are
there no gram-positive archaea species, but there are gram-positive
bacteria species?
Answer:
There are no gram positive archaea because archaea lack peptidoglycan in their cell walls, meaning that the archaeic cell walls are more similar to gram negative bacterial walls, although they do show a greater variety of cell wall types.
EXPLANATION
Bacteria can be divided into gram-positive bacteria and gram-negative bacteria because of their cell wall composition. The cell wall of gram-positive bacteria is made up of peptidoglycan which retains crystal violet stain and appears purple in color under microscope. The cell wall of gram-negative bacteria has an outer layer of lipopolysaccharide which do not retain crystal violet color and appear pink. The cell wall of archaea is not made up of peptidoglycan but is made up of pseudo-peptidoglycan, therefore, no gram-positive archaea species is present on the earth.
If a tRNA molecule has an anticodon which reads AGGCCG, what was the codon on the mRNA molecule?
TCCGGA
UCCGGC
UCCGGU
CTTAAG
The codon is the sequence of nucleotides that carry genetic information that determines which amino acid should be added to the building protein. Nucleotides in this sequence pair with nucleotides from the tRNA anticodon. In the exposed example, the correct codon pairing the given anticodon is is UCCGGC.
Before expplanation, let us review some theoretical frame to answer the question.
During protein synthesis, the ribosome reads mRNA in the 5´ to 3´ direction, while tRNA adds the correct amino acids to build the polypeptide, according to the codons readen in the mRNA chain. A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly. Each of the codons represents one of the 20 amino acids used to build the protein. Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid. tRNA allows amino acids to align according to the nucleotidic sequence in the mRNA molecule.
Once the new amino acid joins the growing protein, the binding between the amino acid and the tRNA breaks, releasing the molecule, which is now available to join another amino acid and repeat the cycle.
• Anticodon: Sequence of bases that pairs with the mRNA codon.
• Amino Acid: the amino acid that is codified by the mRNA codon.
Remeber that:
Adenine forms pairs with Uracyl ⇒ A↔UGuanine pairs with Cytosine ⇒ C↔GIn the exposed example, the tRNA anticodon is AGGCCG, so we need to find its complement.
We know that Adenine pairs Uracyl, Guanine pairs Cytosine, and Cytosine pairs Guanine. So,
Anticodon → AGGCCG
Codon → UCCGGC
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Answer:
The codon is the sequence of nucleotides that carry genetic information that determines which amino acid should be added to the building protein. Nucleotides in this sequence pair with nucleotides from the tRNA anticodon. In the exposed example, the correct codon pairing the given anticodon is is UCCGGC.
Before expplanation, let us review some theoretical frame to answer the question.
During protein synthesis, the ribosome reads mRNA in the 5´ to 3´ direction, while tRNA adds the correct amino acids to build the polypeptide, according to the codons readen in the mRNA chain. A codon is a short sequence of three nucleotides that store the genetic information for the aminoacids´ assembly. Each of the codons represents one of the 20 amino acids used to build the protein. Each tRNA has two important sites. One of them that couples with the codon of the mRNA molecule, named anticodon. The other site couples with an amino acid. tRNA allows amino acids to align according to the nucleotidic sequence in the mRNA molecule.
Once the new amino acid joins the growing protein, the binding between the amino acid and the tRNA breaks, releasing the molecule, which is now available to join another amino acid and repeat the cycle.
• Anticodon: Sequence of bases that pairs with the mRNA codon.
• Amino Acid: the amino acid that is codified by the mRNA codon.
Remeber that:
Adenine forms pairs with Uracyl ⇒ A↔U
Guanine pairs with Cytosine ⇒ C↔G
In the exposed example, the tRNA anticodon is AGGCCG, so we need to find its complement.
We know that Adenine pairs Uracyl, Guanine pairs Cytosine, and Cytosine pairs Guanine. So,
Anticodon → AGGCCG
Codon → UCCGGC
Explanation:
Cytomegalovirus Multiple Choice is among the most common of human infections. is commonly carried in the latent state. can be sexually transmitted. is transmitted by saliva, respiratory mucus, milk, urine, semen, and cervical secretions. All of these choices are correct.
Answer: All of these choices are correct.
Explanation:
The Cytomegalovirus is one of the most common viruses there is that affects humans. Humans of all ages can carry it but because the immune system is capable of fighting it, it is usually in its latent form which is the way that it is usually spread.
When the immune system has been weakened, the virus can cause conditions such as liver problems. It is spread through bodily fluids such as saliva, respiratory mucus, milk, urine, semen, and cervical secretions.
what are mendelian genetic used for
Answer:
Mendel first observed the different patterns of gene segregation for selected traits in garden peas and was able to determine probabilities of recurrence of a trait for subsequent generations and analyses of large families with many affected individuals can be used to determine whether a disease-associated gene is located on an autosome or on a sex chromosome, and whether the related disease phenotype is dominant or recessive.
What issues, organs, and systems were involved in this process of heavy breathing
Answer:The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system.
Explanation:
Which is one function of steroids
Steroids have a number of different functions but essentially all act as hormones in the body.
What is the powerhouse of the cell called?
Mitochondria is called the powerhouse of the cell.
Hope this helps! Have a great day :)
Mitochondria are known as the “powerhouse of the cell.”
define ostia in science
Answer:
Ostia are tiny pores present all over the body of sponges. its function is to let the water, along with desire nutrient flows interior of the sponges.
Answer:
An opening, a passage.
Explanation:
science - Anatomy
8. Which of the following events could lead to genetic drift in a population? *
A. A volcano erupts on an island leaving only a few survivors in a population.
B. The immigration of individuals into a large population, causing the population size
to increase further.
O C. A large population that continues to grow exponentially.
O D. A catastrophe that causes an extinction of the entire population.
Answer:
B
Explanation:
A few individuals from a large, diverse population leave and establish a new population
Which of the following statements about active transport is true?
Molecules move down the concentration gradient.
ATP is not required to move molecules through the membrane.
ATP is formed as molecules pass through protein channels.
It results in a higher concentration of molecules on one side of the membrane.
Answer:
It results in a higher concentration of molecules on one side of the membrane.
Explanation:
Active transport is the transport of molecules up the concentration gradient. This means that molecules are going from low density to high density. This is the opposite of natural diffusion. So, it requires ATP to move the molecules this way. Diffusion normally occurs to maintain homeostasis and an equal amount of concentration on both sides of a membrane. But, with active transport, since molecules are moving up the gradient, the opposite happens and the concentrations are unequal.
A researcher is designing a laboratory experiment to determine whether the inorganic substance A affects the rate of a reaction between two colored liquids,X and Y. When the reaction is complete, the liquid is clear. The reaction between X and Y is similar to one used by manufacturers to produce certain chemicals in factories
Which method would best answer his question about reaction rate and what will he find out about substance A
You farm kelp and sell the kelp for food and as fertilizer. The wastes from the kelp can be used in an integrated aquaculture system in which kelp farming can be coupled with farming of fish or abalone. Make an argument that you are using a sustainable system of growing a renewable resource, and explain why it is beneficial (and more sustainable) to couple algae farming with fish farming than simply to farm fish independently.
Answer:
A sustainable system refers to producing less or probably non-existent debris that are caused by the production of a particular material (i.e. produce, energy). This is a sustainable form of production of coupling algae growth and fish farming because you no longer need the supply of fish feed from other sources that are made artificially but rather, you are using the available algae growth that you are culturing. Farm fishing alone is non-renewable because this produces much waste that can directly harm the environment.
An integrated aquaculture system of fish farming with kelp farming is a sustainable system as both system exchange resources and thus reduce wastage of resources.
What is an integrated aquaculture system?An integrated aquaculture system is an aquaculture system which combines several forms of aquaculture together.
For example, kelp farming is a form of aquaculture which can be integrated with another form of aquaculture such as fish farming.
Integrating fish farming with kelp farming is a sustainable system as both system provides what the other needs.
The kelps serve as food to fish while fish waste serve as manure for kelps.
Therefore, integrating fish farming and kelp farming is a form of a sustainable system.
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2.
Which describes the genes on each pair of chromosomes?
The alleles must be the same; the genes are in a different order.
The alleles must be the same; the genes are in the same order.
The alleles can be different; the genes are in a different order.
The alleles can be different; the genes are in the same order.
*
