Answer:
B
Explanation:
I took bio last year
A scientist claims that he has protected animal test subjects from a newly mutated virus using an experimental vaccine. The experimental vaccine was injected into five animal test subjects. The scientist also injected a placebo vaccine into five other animal test subjects. One month later, all of the test subjects were exposed to the mutated virus. The subjects that received the vaccination showed no sign of the disease and blood tests confirmed the presence of antibodies against the disease, but the subjects given the placebo developed symptoms of this condition. Why did one group have a placebo injected before being exposed to the virus? Choose 1 answer: Choose 1 answer: (Choice A) A They were part of the control group (Choice B) B They would be exposed to a weakened form of the virus (Choice C) C They would be protected from the disease (Choice D) D They were part of the experimental group
Answer:
A. They were part of the control group
Explanation:
In a scientific experiment, the CONTROL GROUP as opposed to the experimental group is the group that does not receive the experimental treatment. This acts as a standard for comparison.
In this question, the EXPERIMENTAL VACCINE is the experimental treatment or independent variable that was added. The five animal test subjects that was injected with this vaccine are called the EXPERIMENTAL GROUP while the other five test subjects that were rather injected with a PLACEBO are called CONTROL GROUPS.
What is the function of the organelles that are labeled F?
The organelle labeled 'F' in the given diagram is Endoplasmic reticulum. The main function ER is to move proteins and other substances through the
can dna replication occur without proteins
The radiometer is designed to be placed in a sunny window and as the sun's rays strike the blades, they spin. Which kind of energy powers this device?
Answer:
Solar energy.
Explanation:
Solar energy is the kind of energy that powers the devices when the solar radiations strike on the blades of the radiometer. The device has the ability to change or convert solar energy into mechanical energy. Solar radiation is a natural resource from which clean energy can be formed that can be used for different activities in our daily life. There are certain cells that are present on the body of radiometer that produces energy needed for its running.
Select the correct answer.
Which organ connects the kidney to the urinary bladder?
A.
gallbladder
B.
rectum
C.
renal pelvis
D.
ureter
E.
urethra
oxygen transport in humans involves the bonding of oxygen with
A : white blood cells
b :platelets
C :Hormones
D Hemoglobin molecules
Answer:
i think it's d. hemoglobin molecules
Oxygen transport in humans involves the bonding of oxygen with hemoglobin molecules. Therefore, option (D) is correct.
Human oxygen transport is essential for delivering oxygen, a key gas needed for cellular respiration, to all tissues and organs. Haemoglobin molecules in red blood cells deliver oxygen.
Oxygen diffuses into the bloodstream and meets haemoglobin in the lungs. Oxyhemoglobin is formed when haemoglobin binds to oxygen molecules. Oxygen partial pressure and other factors affect reversible binding.
The heart pumps oxygenated blood via the circulatory system to tissues and organs. Oxyhemoglobin releases its oxygen, allowing cells to use it in cellular respiration to make energy. The mechanism efficiently supplies oxygen for metabolic needs. Life and physiological activities depend on this mechanism. Therefore, option (D) is correct.
Learn more about Hemoglobin, here;
https://brainly.com/question/31765840
#SPJ6
¿Cuál de las siguientes opciones son adaptaciones de las plantas al desierto? a) Las raíces superficiales y extensas. b) Las hojas de color amarillas c) El cuerpo carnoso de las plantas d) Las hojas modificadas en forma de espina
Answer:
a) Las raíces superficiales y extensas
c) El cuerpo carnoso de las plantas
d) Las hojas modificadas en forma de espina
Explanation:
En biología, una adaptación refiere al proceso de cambio evolutivo mediante el cual los organismos de una especie/taxón hacen frente a determinadas condiciones ambientales. Las plantas han desarrollado diferentes adaptaciones en ambientes desérticos a fin de evitar al máximo la pérdida de agua, el factor más limitante en este tipo de ambientes. Las plantas capaces de soportar largos periodos de sequías se denominan xerófitas. En primer lugar, además de servir como una buena defensa contra herbívoros, las hojas en forma de espina le permiten a una planta almacenar agua durante los períodos de precipitaciones. En segundo lugar, las raíces de plantas desérticas pueden disponerse superficialmente con el objetivo de absorber la mayor cantidad de agua posible. En tercer lugar, las plantas suculentas o crasas son aquellas que tienen tejidos carnosos los cuales pueden almacenar agua en sus hojas, tallos o raíces. Durante los periodos de lluvia leve, las suculentas almacenan grandes cantidades de agua para sobrevivir durante la temporada seca (incluso existen especies vegetales que sobreviven solamente durante la temporada húmeda y producen semillas que toleran la temporada seca).
Wolves are predators of deer. What is most likely to happen to the deer population if the wolf population increased? 0 stay the same increase decrease Obecome extinct
Since wolves are indeed the main predator of deer, if wolves were to increase in their population, the population of the deer will inevitably decrease dramatically.
Hope this helps and if it does, don't be afraid to rate my answer as well as maybe give it a "Thanks"? (Or even better a "Brainliest"). And if it’s not correct, I am sorry for wasting your time, and good luck finding the correct answer :)
If the wolf population were to increase, it is most likely that the deer population would decrease.
What is predator?A predator is an organism that hunts and consumes another (the prey). This is known as predation.
Predators, in general, share the following characteristics: They are usually larger than their prey or, like ants, overwhelm them by attacking in large numbers.
If the wolf population increases, the deer population will most likely decrease.
This is because wolves are deer predators, and an increase in the number of wolves means more deer will be hunted and killed by wolves.
The deer population is unlikely to become extinct as a result of an increase in the wolf population because other factors such as disease, habitat loss, or human hunting can also have an impact on the deer population.
Thus, the population will decrease.
For more details regarding predators, visit:
https://brainly.com/question/3775053
#SPJ7
A general mechanism by which postsynaptic potentials are terminated involves Group of answer choices increased synthesis of the neurotransmitter molecule. enzymatic synthesis of the neurotransmitter molecule. reuptake of the neurotransmitter molecule into the axon through a membrane transporter. increased number of postsynaptic receptors. diffusion into glial cells.
Answer:
The correct answer is - reuptake of the neurotransmitter molecule into the axon through a membrane transporter.
Explanation:
The action of a neurotransmitter at the postsynaptic cell or postsynaptic potentials is terminated by any of these mechanisms that are enzymatic degradation, diffusion or reuptake into the presynaptic cell by specific transporters.
After the desired biological response by postsynaptic potentials, in order to avoid over stimulation or termination of the postsynaptic potentials the neurotransmitter is taken back into the axon through a membrane transporter. This mechanism is to maintain a balance.
Which of the following options is true for aerobic and anaerobic respiration? * The answer is between C and D
Answer:
C
Explanation:
Can I get Brainliest? plz?
Answer:
C is the correct answer.
Explanation:
This is because aerobic does in fact release large amounts of energy as opposed to anaerobic, which releases very small amounts of energy. It isn't D because in anaerobic, the products are organic AND inorganic.
. ¿Esta se encuentra constituido por un conjunto de
comunidades?
Which statement is true about a species living in a homogenous environment compared to a species living in a heterogeneous environment? A species that lives in a homogeneous environment is more likely to exhibit phenotypic plasticity. The homogeneity or heterogeneity of an environment does not determine whether a species will exhibit phenotypic plasticity. Only a large population in a homogeneous habitat can exhibit phenotypic plasticity. A species that lives in a heterogeneous environment is more likely to exhibit phenotypic plasticity.
Answer:
A species that lives in a heterogeneous environment is more likely to exhibit phenotypic plasticity.
Explanation:
Phenotypic plasticity might be understood as the ability of a genotype to produce different phenotypes in response to varying environmental conditions.
Phenotypic plasticity needs epigenetic mechanisms to occur, which involve the genotype and the environment interaction to produce adapted phenotypic changes.
Epigenetic mechanisms produce changes in the expression of the genes, with no need to alter the DNI nucleotides sequences.
A heterogeneous environment imposes variability on genotypes that interact with it, producing different phenotypes. These phenotypes will vary according to environmental conditions.
can anyone tell me hypothesis for eye disease...
Answer:
Mostly radiations or dangerous products that come in contact with the eye For example, maybe harmful makeup product but there are many reasons for eye disease, you should elaborate more on dangerous product put on skin and harmful chemical
Explanation:
The pathophysiology of primary open-angle glaucoma is still largely unknown, although a joint contribution of vascular, biomechanical, and biochemical factors is widely acknowledged. Since glaucoma is a leading cause of irreversible blindness worldwide, exploring its underlying pathophysiological mechanisms is extremely important and challenging. Evidence from recent studies appears supportive of the hypothesis that a “glymphatic system” exists in the eye and optic nerve, analogous to the described “glymphatic system” in the brain. As discussed in the present paper, elucidation of a glymphatic clearance pathway in the eye could provide a new unifying hypothesis of glaucoma that can incorporate many aspects of the vascular, biomechanical, and biochemical theories of the disease. It should be stressed, however, that the few research data currently available cannot be considered as proof of the existence of an “ocular glymphatic system” and that much more studies are needed to validate this possibility. Even though nothing conclusive can yet be said, the recent reports suggesting a paravascular transport system in the eye and optic nerve are encouraging and, if confirmed, may offer new perspectives for the development of novel diagnostic and therapeutic strategies for this devastating disorder.
Some species of hares are brown most of the year, but change color to white in the winter. This allows them to blend in through the seasons.
Where are these organisms adapted to live?
deciduous forests
desert
tropical rain forests
savanna
Answer:
Snowshoe hares have an interesting adaptation that helps protect them against predators. Depending on the season, their fur can be a different color. During the winter, snowshoe hares are white, which helps them blend in with the snow. When the seasons change to spring and summer, snowshoe hares turn a reddish-brown.
The products of cellular respiration are
Answer:
ATP, carbon dioxide, and water.
Explanation:
ATP, carbon dioxide, and water are all products of this process because they are what is created.
what is the function of cell nucleus?
Answer:
The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus. The gel-like matrix in which the nuclear components are suspended is the nucleoplasm.
Explanation:
p,ease help meeee
it's also due
Answer:
Golgi complex and Nucleus.
Explanation:
In the diagram, A part is refers to Golgi complex whereas B part is refers to nucleus. Nucleus controls different activities of the cell while on the other hand, Golgi complex produces proteins and lipid molecules that can be used for in other places inside and outside of the cell. The Golgi complex is a cell organelle which is also called Golgi apparatus and Golgi body.
Rainforests around the world are being cleared at an alarming rate to make room for new communities, agriculture, mining, and roads, and to provide lumber for construction and furniture.
How might the destruction of rainforests affect the balance of gases in Earth's atmosphere?
by increasing carbon dioxide and decreasing oxygen
by increasing carbon dioxide and increasing oxygen
by decreasing carbon dioxide and increasing oxygen
by decreasing carbon dioxideand decreasing oxygen
The destruction of tropical forests can affect the balance of gases in the Earth's atmosphere increasing carbon dioxide and decreasing oxygen.
What does deforestation cause in the air?Deforestation by fire contributes significantly to the increase in air pollution. The world today faces a series of environmental problems, the main ones being the deforestation of natural forests and air pollution, which causes the emission of CO2 (carbon dioxide) into the atmosphere.
With this information, we can conclude that the destruction of tropical forests can affect the balance of gases in the Earth's atmosphere increasing carbon dioxide and decreasing oxygen.
Learn more about Deforestation in brainly.com/question/17178423
#SPJ2
A pack of Ramboulet sheep were imported from Australia to Pakistan in November. After some days, various sheep were suddenly died. Remaining of them were carefully examined by an expert veterinarian who found that sheep were extremely weak with yellowish mucus membrane. Sheep were gasping and it was examined that some of them are anxiously looking at their belly. He prescribed some emergency drugs along with fecal examination. Results showed presence of large quantity of parasite oocytes approximately ranging from 145 -155 um in length and 85-95um in width. How will you proceed with diagnosis as veterinarian? What is differential diagnosis and lifecycle of parasite?
Answer:
Through medication.
Explanation:
First I will apply medication that kills the pathogen that is present in the feces as well as good feel to maintain the health of sheep which was weak due to the pathogens. I have to apply vaccines that kills oocyst that is responsible for this infection. A differential diagnosis refers to a list of possible conditions or diseases that could be causing your symptoms. It can be obtained from your symptoms, medical history, laboratory results, and a physical examination. We can find out the disease through the symptoms that we observe from physical examination.
______ refers to possessing different alleles for a trait.
Answer:
heterogeneous - possessing different alleles for a trait. homologous - possessing identical alleles for a trait.
En cuáles de estos Cuerpos hay Células? Corcho, botella de plástico, pera, roca, sangre, vaso de agua.
What are water and carbon dioxide in the cellular respiration reaction?
CU
They are reactants because they are present before the reaction.
They are reactants because they are present after the reaction.
They are products because they are present before the reaction
They are products because they are present after the reaction
Save and Exit
Answer:
They are products because they are present after the reaction.
hope it helps
have a nice day
Which of these is an abiotic factor in a prairie ecosystem? O A. Minerals B. Beetles O O O O OC. Grasses O D. Buffalo
The bacteria chromosome is
Human activities would have the least immediate impact on A. The formation of fossil fuels B. Coral bleaching C. Overpopulation D. Eutrophication
Answer:
A. The formation of fossil fuels
Explanation:
Human activities would have the least immediate impact on the formation of fossil fuels because the fossil fuels are not affected the formation of fossil fuels. The formation of fossil fuels takes millions of years because it is a very slow process. Human activities greatly affected the coral reef bleaching, over population and Eutrophication due to the release of pollutant gases in the atmosphere that greatly impact the environment.
Can someone please answer these multiple choice questions. Will mark as brainliest.
Answer:
Can't see the MCQ'S
Explanation:
I wanted to help u but I can't see the MCQ'S . I don't know if it is my problem.
Which is most likely an example of pseudoscience?
A doctor’s study shows that insulin released constantly in the body regulated blood sugar better than injected insulin.
An experiment concludes that two populations of squirrels look similar but are not closely related.
Data shows that dogs live longer by using a certain brand of dog food.
Most people believe that drinking milk can soothe heartburn.
Answer:
Most people believe that drinking milk can soothe heartburn.
Explanation:
Pseudoscience refers to practices and beliefs that are believed to be scientific but in actuality, do not follow any known scientific method. Even after it has been logically proven that these practices have no scientific backing people continue to believe in them because through confirmation bias, they believe that they work.
True science is evidence and research-based. Pseudoscience as seen in the last option is just based on belief.
Answer:
Most people believe that drinking milk can soothe heartburn.
Explanation:
What is the impact of life skill to you? A. To be able to create problems B. To be self assertive. C. To be influenced by friends D. To maximize risk in life situation.
Answer:
To self assertive
Explanation:
Gives you confidence and advance on you're own personality and views.
A slab of bare rock is covered with lichens. In time, mosses cover the rock, followed by grasses, and finally by small shrubs and tree saplings. In this example, the lichens represent
a. pioneer organisms
b. secondary consumers
c. a climax community
d. a dominant species
Answer: pioneer organisms
Explanation: they were present as the environment developed
Prokaryotes play essential roles in the environment and industry. Which statement describes the benefit of nitrogen fixation, a process that certain prokaryotes perform? (1 Point) a. Genetically-engineered bacteria synthesize drugs and chemicals. b. Bacteria clean up oil spills and or remove waste from water. c. Bacteria break down dead organisms and cycle materials back into the environment. d. Symbiotic bacteria on the roots of legumes help supply nutrients to the plant.
Answer:
d. Symbiotic bacteria on the roots of legumes help supply nutrients to the plant.
Explanation:
Symbiotic bacteria on the roots of legumes help supply nutrients to the plant by fixing atmospheric nitrogen done by nitrogen fixing bacteria. There are some bacteria present in the roots of plants which fixes atmospheric nitrogen and convert in available form to the plants and in exchange the plant provides food and habitat to the bacteria that performs nitrogen fixation.
