Answer:
A. Chloroplasts and mitochondria replicate in a similar manner as some prokaryotes
Explanation:
Endosymbiont theory deals with how eukaryotic organisms were formed from prokaryotic organisms. Prokaryotes such as Bacteria were documented as the first form of life on earth through fossil records before eukaryotes came into light.
Organelles such as Chloroplasts and mitochondria replicate in a similar manner as some prokaryotes. This supports the endosymbiont theory that present-day eukaryotic cells are descendants of a successful symbiotic relationship between a host cell and an engulfed prokaryote
The image shows a food web in an Arctic ecosystem. Rising temperatures in the Arctic Ocean can lead to large die-offs of phytoplankton, which are autotrophs. What would most likely happen in an Arctic ecosystem if the phytoplankton population decreased?
Answer:
as the population of phytoplankton decreases, the amount of food for zooplancktons decreases
A gamete is best described as what?
A. The protective outer layer of an egg cell.
B. An enzyme in a sperm used to digest the egg cell's membrane.
C. A haploid cell produced for reproduction.
D. A diploid cell produced for reproduction.
Answer:
C. A haploid cell produced for reproduction.
Explanation:
The term "gamete" refers to reproductive cells such as sperm and ova. Sperm and ova are both haploid cells that unite to form diploid cells.
Question 7 of 10
A certain plant has a color that can range from green to yellow. Some plants
are very green, and some are very yellow, but most are in between. What is
most likely true about this trait?
A. The color is a Mendelian trait.
B. There are several genes that control the color.
C. There are only two alleles for color.
D. Being yellow is a recessive trait.
Answer:
B. There are several genes that control the color.
Explanation:
According to the description of the trait in this question in which the plant exhibits a wide range of colors from green to yellow, it shows that the trait for color in such plant is controlled by two or more (several) genes. This kind of inheritance is called a POLYGENIC INHERITANCE.
Polygenic inheritance is a kind of non-mendelian inheritance (does not follow the principles of Mendel) in which phenotypic traits of an organism is controlled by several genes. Each gene possess two alleles, which equally contribute to the phenotypic expression of such trait. Traits controlled by polygenes do not conform to Mendel's laws of inheritance as the offsprings exhibit a range of traits from the mixture of parental traits as stated in the question.
In polygenic inheritance, most of the offsprings exhibit the intermediate phenotype (between green and yellow) with few extremes (green and yellow) due to a combination of the genes in the parental phenotypes. Hence, based on the description in the question, there are several genes that control the color trait in the plant.
Answer: B. There are several genes that control the color.
Explanation:
i got it right on the test
2. How are each of the following groups likely to feel about the reintroduction of wolves in Yellowstone National Park? (write 2-3 sentences for each)
a. Tourists who visit the park
b. Environmentalists (people who want to protect the nature of Yellowstone)
c. People who live near the park
Answer:
a) Good
b) Good
c) Bad
Explanation:
Tourists who visit the park feels good about the reintroduction of wolves in the park because it is a new animal they are seeing in the park. Environmentalists also feels good because this action is a step towards the protection of organisms present in the nature. People who live near the park does not feel good because wolf is a dangerous animal and if he escaped from the park, the lives of the people will be in danger.
A retired contract administrator who enjoyed gardening sought medical attention for what appeared to be a sinus infection. He received antimicrobials but the conditioned worsened and he was experiencing severe painful spasms in his jaw. He admitted to injuring himself with a gardening tool while wearing sandals in the yard but did not seek medical attention for the wound. The man is likely experiencing.
A. allergic rhinitis.
B. meningitis.
C. septic shock.
D. LPS-mediated inflammatory response.
E. intoxication caused by a focal C. tetani infection.
Answer:
The correct answer is E. intoxication caused by a focal C. tetani infection.
Explanation:
Clostridium tetani bacteria are found in the soil, in the feces and in the mouths of animals. The disease is acquired when wounds become infected by the bacteria. The spores become active and spread throughout the body producing a poison called tetanus toxin. This toxin blocks the nerve signals from the spinal cord to the muscles and can cause generalized severe muscle spasms (lockjaw) exacerbated by external stimuli or muscle spasms in areas adjacent to the wound.
Which of the following will cause a decrease in the mass of an object? A. Increase in the gravitational pull B. Decrease in the gravitational pull C. Increase in the quantity of substance present in the object D. Decrease in the quantity of substance present in the object
Answer:
C
Explanation:
a pupil performed an experiment in a school lab to show the action of a digestive enzyme on a food substance
a) Name and enzyme suitable for such an experiment
b) Name a food substance on which the enzyme that you have named will act
c) Describe any preparation of the food required before the experiment is performed. If no preparation is required state why?
d) give the temperature at which the enzyme-food mix should be maintained for the experiment to work
e) how much time is needed for digestion of food in this experiment?
f) describe a test to confirm that digestion has occurred
Which is most likely a source of air pollution? littering CFCs oil spill runoff
Answer: CFCs
Explanation: The other options aren’t as relevant to air pollution.
Answer:
cfcs
Explanation:
Match each statement to the type of behavior it describes. Jenna published the results of her latest experiment for the public to see. Malcolm altered an experiment to be able reach his desired conclusion. Elena keeps complete records of all her experiment results. Neal shared the results of his field study even though they didn’t support his hypothesis.
Answer:
See the answer below
Explanation:
It may seem that the question is incomplete. The complete question reads:
Match each statement to the type of behavior it describes. Jenna published the results of her latest experiment for the public to see. Malcolm altered an experiment to be able reach his desired conclusion. Elena keeps complete records of all her experiment results. Neal shared the results of his field study even though they didn’t support his hypothesis. Put each description to the group it belongs to. 1.Responsible 2.Irresponsible.
To answer the question:
Responsible behavior
Jenna published the results of her latest experiment for the public to see.Elena keeps complete records of all her experiment results.Neal shared the results of his field study even though they didn't support his hypothesis.Irresponsible behavior
Malcolm altered an experiment to be able to reach his desired conclusionResponsible behaviors are those that support responsible scientific practices and do not jeopardize the objective nature of research. Every data during experiments must be well kept and after thorough analysis, results must be published fro the public to see irrespective of whether it agrees or disagrees with the original hypothesis.
Altering an experiment in order to achieve the desired result is grossly irresponsible, as this eliminates the objectivity that should be the main goal of every experiment. Bias must be eliminated from every scientific experiment.
In part A, you analyzed genes that contribute to two diseases. (cystic fibrosis and muscular dystrophy) How can scientists use this information to develop new treatments for these diseases? Based on your findings, do you think that scientists will need to develop multiple treatments to control symptoms of these diseases? Explain your reasoning.
Answer:
By designing suitable gene therapies in order to restore target gene expression.
Explanation:
Cystic fibrosis and muscular dystrophy are inherited genetic disorders associated with serious health problems. Cystic fibrosis is caused by mutations in the gene that encodes for the cystic fibrosis transmembrane conductance regulator (CFTR) protein, and it is a condition associated with abnormal production of sticky mucus that leads to problems in the lungs and the digestive systems. On the other hand, muscular dystrophy is produced by mutations in genes localized on the X chromosome such as, for example, the gene 'dystrophin'. Gene therapy is an experimental approach used to compensate abnormal gene function by introducing exogenous genetic material and thus restore their altered protein products. Consequently, personalized gene therapies can be useful to treat inherited disorders such as cystic fibrosis and muscular dystrophy.
Galactosemia is an inherited genetic condition. Children with this condition cannot break down the sugar galactose, which is part of lactose. Based on the pedigree chart, is this condition a dominant or a recessive disorder? Explain your reasoning.
Answer:
Recessive.
Explanation:
Galactosemia is an autosomal recessive genetic disorder. Recessive genetic disorders occur when an individual inherits a non-working gene from each parent.
There is no chart attached, so the reasoning is just common scientific knowledge. Please attach the chart so I can properly answer the question!
Answer:
It is recessive. Both parents are heterozygous for the trait, but they do not exhibit the disease themselves. If it were a dominant gene, both parents would have the disease if they carried the gene for it.
Explanation:
This is the answer on edmentum! Thanks!
Multiple Choice: Please select the best answer and UICK
Which of the following items was Darwin able to use to study the structures of
extinct organisms?
A. Fossils
O B. Species
O C. Amino acids
O D. Adaptations
Answer:
The correct answer is fossils
Explanation:
Because fossils are used in studying extinct animals.
Hope this helps....
Have a nice day!!!!
Arborviral diseases: Group of answer choices Refer to arthropod-borne viral diseases Can produce central nervous system illness Are most often spread by mosquitoes May produce acute self-limited fevers
Answer:
All of the options are correct.
Arboviral diseases are arthropod borne, they can produce central nervous system illnesses, transmitted by mosquito bites and also produce acute self limiting fevers.
Explanation: Arboviruses are viruses that are harboured by arthropods which includes mosquitoes, they have the capacity to cause illnesses which are acute and self limiting(it has the ability to resolve on its own without treatment). It has also been found to cause illnesses to the central nervous system(the brain and the spinal cord).
Vanessa attempts to freeze liquid mercury. Which statements describe particle arrangement and motion that occur in mercury?
Answer:
Volume of mercury decreases due to close arrangement of particles.
Explanation:
When we freeze liquid mercury, its volume decreases and density increases from from 13.69 g/cm3 to 14.184 g/cm3 and form a solid mercury. The motion of particles stop when we freezes liquid mercury and the particles settles into a stable arrangement. If we cool the liquid mercury and the temperature reaches to -38.83 °C, then it converts from liquid into solid substance.
Without the discovery of magnetic reversals recorded on the ocean floor, scientists
A. could not confirm the usefulness of sonar
B. could destroy the hypothasis of continental drift
C. could not provide a mechanism for moving continents
D. could explain how the seafloor was being destroyed
Answer:
C. could not provide a mechanism for moving continents
Explanation:
Magnetic reversals have the habit of causing geological displacements, since they are directly linked to the movements and distribution of tectonic plates on the planet, which are responsible for the movements of the continents. In this case,
if the discovery of magnetic reversals recorded on the ocean floor were not carried out, it would be impossible to establish its relationship with the movement of the tectonic plates, making it impossible to provide a mechanism for moving continents.
here are times where you will be provided with BUD dates. When you do not have access to the BUD dates, you will have to determine that date yourself. What is the appropriate BUD date for a water containing oral formulation? Not later than 14 days Not later than 30 days
Answer:
Explanation: Not later than 14 days.
Beyond Use Date (BUD) is the date after which a compounded sterile preparation may not be stored or transported. This time is calculated from the date of compounding, and it is different from expiration date. This is because the BUDs are assigned with a different approach from those applied to assigning expiration dates to manufactured drug products. Also, compounded preparations are intended for administration following short-term storage. So, the BUD is the date after which a compounded preparation shall not be used. A reliable BUD is established to ensure that the preparation has an accepted quality and purity at least until the labeled BUD.
BUD is calculated by:
Type of container in which it is packagedHow long the medication will be takenType of drugHow fast is the drug degradatedStorage conditionsDosage of the medicationNature of the drug and its degradation mechanism Potential for microbial proliferation in the preparationFor Nonaqueous Formulation, the BUD is not later than 6 months or the time remaining until the earliest expiration date of any API (Active pharmaceutical ingredient), whichever is earlier.
For Water-Containing Oral Formulation, the BUD is not later than 14 days when it is stored at controlled cold temperatures.
For Dermal and Mucosal Liquid, Semisolid Formulations/Water-Containing Topical, the BUD is not later than 30 days.
What adaptation allows the Artic fox to survive in its environment?
Answer: Arctic foxes have several adaptations that allow them to survive. Their round, compact bodies minimize surface area that is exposed to the cold air. Their muzzle, ears, and legs are short, which also conserves heat.
Explanation:
Interpreting an Expression Quick Chec How many factors does the expression (17 –r) have? O four O two one three
Answer:
One
Explanation
how many 2steps photosynthesis
Explanation:
photosynthesis takes place in two stages the light depend reactions the light independent reaction or Calvin cycle
ANSWER ASAP PLEASEEEEEE!!!!!! ILL GIVE 100 POINTS!!
Answer:
A
Explanation:
Answer:
The answer is A both daughter cells will have identical genetic material to the parent cell.
Explanation:
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I have four brothers
"This is what type of
observation?
Write True or False for the following statements. Rewrite the false statements in correct forms.
a) A pitcher plant is a primary consumer.
b) A tick that survives on cattle can survive without plants on the Earth.
c) Oxygen is not a greenhouse gas.
d) Enhanced greenhouse effect helps maintain the average temperature of the Earth.
e) Earthworm is a decomposer.
Answer:
false statement is option A
Explanation:
correct form of option A is
A pitcher plant is a producer not consumer
The intensification of ultraviolet rays has contributed to
Answer:
skin cancer,sunburn,accelerated skin aging etc.
Explanation:
The severity of the effect depends on wavelength,intensity and duration of exposure.
Answer:
increase in skin cancer. please give brainly!
Explanation:
In an ________ solution, red blood cells ________. Group of answer choices hyposmotic, lose water and shrivel isomotic, have a normal shape isosmotic, swell and may burst hyperosmotic, have a normal shape isosmotic, lose water and shrivel
[tex] \large{ \boxed{ \bf{ \color{skyblue}{The \: correct \: question:}}}}[/tex]
Q. In an ________ solution, red blood cells ________. Group of answer choices:
Hyposmotic, lose water and shrivel Isomotic, have a normal shape ✔️Isosmotic, swell and may burst Hyperosmotic, have a normal shape Isosmotic, lose water and shrivel[tex] \large{ \boxed{ \bf{ \color{violet}{The \: correct \: answer:}}}}[/tex]
In an isosmotic solution, red blood cells have normal shape.
Option B
Explanation:-Osmosis : The movement of the solvent or water molecules from a solution of their higher concentration to a solution of lower concentration through a semipermeable membrane.
❍ Depending upon the osmotic concentration, There are three types of solution and their result when cell is keot inside them:
Hyposmotic (Water enters, Swells up)Isosmotic(Equal flow, No change)Hyperosmotic(Water comes out, shrinkage)━━━━━━━━━━━━━━━━━━━━
what type of environment would you most likely find fish species 1?
Answer:
Different species of fish are adapted for different habitats: rocky shores, coral reefs, kelp forests, rivers and streams, lakes and ponds, under sea ice, the deep sea, and other environments of fresh, salt, and brackish water. Some fish are pelagic: they live in the open ocean.
Explanation:
A cell biologist carefully measures the quantity of DNA in grasshopper cells growing in cell culture. Cells examined during the G1 phase of the cell cycle contained 200 units of DNA. What would be the amount of DNA in one of the grasshopper daughter cells right after cytokinesis?
Answer:
200 units
Explanation:
Cell cycle refers to the series of events that occurs throughout the division of a cell. Mitosis is the division used during cell growth. Mitosis consists of the Interphase stage and the Mitotic phase. The interphase stage is made up of the G1, S and G2 phases in that order. The genetic material (DNA) of the cell replicates during the Synthesis (S) phase.
Hence, this means that the DNA of grasshopper cells in the culture observed during the G1 phase will enter the S phase and replicate i.e. 200 units will form 400 units.
The cell go ahead to undergo nuclear division during the anaphase of the mitotic phase. Hence, each pole of the cell will contain 200units of DNA each. During Cytokinesis, the cytoplasm of the cell divides and the contents of the opposite poles becomes a new daughter cell. Each daughter cell will therefore contain 200 units of DNA each.
Which of the following statements is true? Bacteria and protozoa are examples of unicellular organisms. Individual cells do not need to maintain homeostasis. Most multicellular organisms reproduce through mitosis. Two identical daughter cells are created from sexual reproduction.
Answer:
Bacteria and protozoa are examples of unicellular organisms.
Explanation:
Bacteria are prokaryotic organisms in which the genetic material is not enclosed in a membrane. Bacteria are one of the oldest groups on Earth. Bacteria may inhabit diverse environments such as the deep ocean, soils, acidic hot surfaces, radioactive materials, etc. On the other hand, protozoa (also known as protozoan) are unicellular, heterotrophic, eukaryotic microorganisms, whose genetic material is enclosed within a nucleus that has a membrane. This group was originally considered to be animals because they have animal-like features including, for example, motility and predation.
The statement "Bacteria and protozoa are examples of unicellular organisms" is true. Bacteria and protozoa are both single-celled organisms.
What are the false statements?The statement "Individual cells do not need to maintain homeostasis" is false. Homeostasis is the ability of cells to regulate their internal environment to maintain a stable condition necessary for proper functioning.
The statement "Most multicellular organisms reproduce through mitosis" is false. Most multicellular organisms reproduce through a process called meiosis, which involves the formation of specialized cells called gametes.
The statement "Two identical daughter cells are created from sexual reproduction" is false. Sexual reproduction involves the fusion of two gametes, resulting in the formation of a genetically diverse offspring.
Read more about protozoa here:
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What has a greater influence on protein levels?
(1 point)
Protein degradation has a greater influence because outside factors like antibiotics can
cause it, and it is difficult to recover from.
O
Protein degradation has a greater influence because they are denatured faster than the cell
can produce them.
mRNA destroyer concentration has a greater influence because it is destroying mRNA before
proteins can even be produced.
mRNA destroyer concentration has a greater influence because mRNA is destroyed right
after the proteins are produced.
Answer:
mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced.
Explanation:
Proteins are synthesized from mRNA through the process of translation. mRNAs are first synthesized from a coding DNA template through the process of transcription. Hence, if mRNAs are destroyed, it means proteins will not be synthesized at all.
Protein not being synthesized at all means that mRNA destroyer concentration has a greater influence on protein levels than protein degradation. With protein degradation, not all the protein is degraded at once and some quantity of the protein can still be found, but with mRNA destroyer concentration, no protein can be found at all because it was not synthesized in the first place.
Which best describes food when it reaches the stomach?
Explanation:
The polysaccharides have been broken down.
what mode of nutrition is house fly
Answer:
Parastic
Explanation:
Explanation:
The mode of nutrition in house fly is known as SCRAPING
