Answer: B and D
Explanation: We can break down why the correct answers are choices B and D by understanding why A and C are incorrect.
Option A states that active transport utilizes channel proteins, and facilitated diffusion utilizes carrier proteins. This is incorrect. Active transport involves carrier proteins, and facilitated diffusion involves channel proteins. Carrier proteins are different from channel proteins in that, while channel proteins can only facilitate the passive diffusion of ions into or out of the cell along their concentration gradient, carrier proteins can also use ATP to move ions in or out of the cell against their concentration gradient.
This brings us to why option C is also incorrect. Option C states that both processes require the input of energy in the form of ATP. While active transport requires the use of ATP to transport ions with or against their concentration gradient, facilitated diffusion does not. This is easily remembered when we consider that active transport is called *active* transport because the cell is *actively* using energy to transport ions.
Hope this helped.
Answer: Choice B
Active transport moves substances against the concentration gradient and facilitated diffusion moves substances along the concentration gradient.
Choice D
Both processes require the use of membrane proteins.
Explanation: B- Active transport is active because it requires ATP in order to go against the gradient and facilitated diffusion is a type of passive transport that goes with or along the gradient without the use of ATP.
D- Active transport utilizes carrier proteins on the cell membrane and facilitated diffusion can utilize either channel or carrier proteins on the cell membrane.
Hope this helped have a nice day. :D
Question 5 (4 points)
Which is a correct statement regarding microscope use?
You should always begin with the lowest power objective lens.
This highest power objective lens is generally the shortest one.
You should always start with the highest power objective lens.
Once you center under low power, you will not recenter again.
Answer:
Once you center under low power, you will not recenter again.
Explanation:
The correct option would be that once you center under low power, you will not recenter again.
One can start focusing a slide using the x10 or x40 objectives, it does not have to always be the x10 objective and it is never advisable to start with the highest power objective. Also, the highest power objective lens is the longest and not the shortest one.
However, once the field diaphragm has been centered under low power, one does not need to center again but only to refocus.
why are omega - 3 fatty acids important for the diet?
Answer:
Omega-3 fatty acids are one of the "good" types of fat. They may help lower the risk of heart disease, depression, dementia, and arthritis. Your body can't make them. You have to eat them or take supplements.
Omega-3 fatty acids may help to:
Lower blood pressure.
Reduce triglycerides.
Slow the development of plaque in the arteries.
Reduce the chance of abnormal heart rhythm.
Reduce the likelihood of heart attack and stroke.
Lessen the chance of sudden cardiac death in people with heart disease.
A gecko is a type of reptile. How does a gecko most likely respond to cold air temperatures?
by shivering, which is in response to an internal stimulus
by shivering, which is in response to an external stimulus
by moving into the sun, which is in response to an internal stimulus
by moving into the sun, which is in response to an external stimulus
Answer:
by moving into the sun which is in response to an external stimulus
Explanation:
The geco will want to get warm as a result of the cold air which is an external stimulus so it moves into the sun
Answer:
dd
Explanation:
Experiment: What is the effect of drinking coffee on a person's score on a memory test?
Which of the following would be the INDEPENDENT VARIABLE?
O Coffee
O Decaf coffee
O Memory test score
O Type of cup used
Answer:
The independent variable would be the coffee.
Explanation:
In an experiment, the independent variable is something that is added or changed by the scientist in order to see if there will be a response.
In this case, the memory test score would be the dependent variable (something that changes as a result of a change in the independent variable).
Decaf coffee could be a control group, or a group that is treated the same as the independent variable but without being exposed in order to account for any outside factors.
Finally, the type of cup used would be a constant between the control group (using the decaf coffee) and the experimental group (the group with regular coffee).
Hope this helps!
Which is true about all unicellular and multicellular organisms?
They are made of one cell.
They reproduce.
They cause infections.
They are made of multiple cells.
Answer:
They reproduce.
Explanation:
Reproduction is the phenomenon which involves the production of an offspring by particular individual or individuals to propagate their species. Reproduction is done during reproductive phase. Unicellular organisms are single-celled forms whereas multicellular organisms are made up of many cells.
hope it helps :)
please mark it the brainliest!
Answer:
They reproduce
Explanation:
What defect of the bony covering of the spinal cord is described by the following:
"Spinal cord and spinal meninges are intact, neural arch of L5 and S1 is absent, spine of L5 is absent, median sacral crest associated with S1 is absent; site of defect is covered with skin with a tuft of hair"
Answer:
Las causas de los trastornos de la médula espinal son traumatismos, infecciones, bloqueo del aporte sanguíneo y compresión por un hueso fracturado o por un tumor.
Habitualmente, los músculos se debilitan o se paralizan, la sensibilidad es anormal o se pierde, y el control de la función de la vejiga y del intestino puede ser difícil.
El diagnóstico se basa en los síntomas y en los resultados de la exploración física y las pruebas de diagnóstico por la imagen, como la resonancia magnética nuclear.
Si es posible, se corrige la afección que causa el trastorno de la médula espinal.
Con frecuencia se necesita rehabilitación para recuperar el máximo de actividad posible.
La médula espinal es la vía principal de comunicación entre el cerebro y el resto del organismo. Es una estructura tubular, frágil y larga que parte de la base del encéfalo hacia abajo. La médula está protegida por los huesos de la espalda (vértebras) que forman la columna vertebral. Las vértebras están separadas y almohadilladas por discos de cartílago.
Explanation:
. Plants have two transport systems - xylem and phloem. Xylem transports water and minerals. Phloem transports sugars and amino acids dissolved in water.
Answer:
Plants cells have a strong cellulose cell wall outside the membrane.This cell wall is fully permeable to all molecules and supports the cell and stops it from bursting when it gains water by osmosis.In pure water the cell content which is the cytoplasm and vacuole pushes against the cell wall and the cell becomes turgid......I hope this helps you....
Which of the qualities listed below explain why certain organisms are classified as indicator species? They are a primary food source for many other organisms B. They are very sensitive to environmental change. C. They can't easily escape pollutants D. All the above
Answer:
B. They are very sensitive to environmental change
Explanation:
Certain organisms like plants, animals and microbes are used to monitor pollution status of the environment. These organisms are called indicator species or bioindicators. They are widely used for pollution monitoring due to their sensitivity to environmental changes i.e. in the presence of a pollutant, they undergo morphological or physiological changes.
A common example of indicator species is the proliferation of algal species in a water body known as ALGAL BLOOM. They tend to grow excessively in the presence of pollutants in form of nitrates and phosphates which they use as nutrient.
Identify the consumers described below as herbivore, omnivore, or carnivore. A particular snake eats a mouse, lizard, and other sources of meat. A cow eats grass, grain, and other producers. A grizzly bear eats plants, insects, and other animals.
Answer:
snake - carnivore lizard - carnivore cow - herbivore grizzly bear - omnivore
Explanation:
Answer:
✔ carnivore
A particular snake eats a mouse, lizard, and other sources of meat.
✔ herbivore
A cow eats grass, grain, and other producers.
✔ omnivore
A grizzly bear eats plants, insects, and other animals.
Explanation:
egde2020
[Please answer, thank you.]
Which variable is measured in an experiment?
dependent variable
experimental variable
independent variable
The Dependent variable is measured in an experiment. Thus, the correct option is A.
What is a Dependent variable?A dependent variable may be defined as a form of variable in experimental studies that never stands alone. The value of this variable significantly depends upon the independent variable.
The fluctuation in the independent variable may typically induce the dependent variable to be altered. It is the variable that is being measured or tested in a scientific experiment.
While the independent variable is one that stands alone in a given set of experimental studies descriptively. Its value does not depend on any sort of other variables. While the experimental variable is not frequently observed in any experimental analysis.
Therefore, the Dependent variable is measured in an experiment. Thus, the correct option is A.
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This student is holding a model of the human brain.
What are two benefits of this model?
Answer:
1. It can help children to easily learn or recognice the stucture of brain .
2. It can help children to learn about the ridges and groves , blood vessels in brain which will grow curiosity in them to do more research about the stucture and function of brain.
HOPE IT HELP YOU !
The amoeba is protozoan that moves with
Flagella
Cillia
Pseudopodia
None of the abobe
Many claims of pseudoscience are not refutable because they can’t be ____.
Answer:
Is there an answer bank?
Explanation:
I can't answer this without an answer bank
Explain the importance of geoneutrinos to understanding earth’s interior
Answer:
“Geoneutrinos,” neutrinos that stream naturally from the Earth’s interior, are giving scientists the best direct evidence of what’s at work in the belly of the planet. Released by naturally occurring radioactive isotopes inside the Earth, geoneutrinos carry information about what makes the Earth’s insides hot; what elements make up the core of our planet and in what concentration and distribution; how the Earth’s mantle and tectonic plates move and interact; and how planets like our own form and evolve.
Answer:
Released by naturally occurring radioactive isotopes inside the Earth, geoneutrinos carry information about what makes the Earth’s insides hot; what elements make up the core of our planet and in what concentration and distribution; how the Earth’s mantle and tectonic plates move and interact; and how planets like our own form and evolve.
Explanation:
If you were to decide to remove outlying data points from you analysis what are two ways you could indicate this in your report to ensure you are being honest about you data analysis
Answer:
If the outlying data points are to be taken out from the report to guarantee the analysis of examination is right is to eliminate only if that isn't right or if there is enough data to check the data points once more.
One shouldn't eliminate outliers if the outcomes are critical and there are numerous outliers in data point. While eliminating the data points, one can trim the data points or change it with closest with mean or median.
Explain what the Carbon Cycle is and what could
happen if this cycle gets disrupted.
I
Answer:
it is the biogeochemical cycle by which carbon is exchanged with biosphere, pedosphere, hydrosphere and atmosphere of the earth
carbon atoms are then released when carbondioxide when organiss expire
I NEED HELP PLEASE !!!!!
Answer:
Its the first bubble, If I get it wrong dont blame me.
Welp hope this helps.
Answer:
B
Explanation:
systematic replication is a way to increase the generality of an experimental finding by conducting other experiments in which the procedures are different (from the original research) but they are logically related.
List 3 sources of evidence for the endosymbiotic theory.
Answer:
DNA, RNA, Ribosomes And Protien Synthesis.
The endosymbiotic theory states that mitochondria and chloroplasts in eukaryotic cells were once prokaryotes engulfed by an early eukaryote.
The lines of evidence for this theory include:
Both mitochondria and chloroplasts have their own DNA that resembles DNA from prokaryotic organisms (i.e., a circular DNA molecule).Both mitochondria and chloroplasts have bacteria-like ribosomes.Both mitochondria and chloroplasts have a double membrane structure, i.e. an inner membrane and an outer membrane.Mitochondria and chloroplasts have a similar size as prokaryotic cells.In conclusion, the endosymbiotic theory is a well-supported theory and states that mitochondria and chloroplasts were once prokaryotes that were engulfed by an early eukaryote.
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what are alveolar ducts
Answer:
Alveolar ducts are small ducts which connects respiratory bronchioles to alveolar sacks.
The urinary bladder is located ____ to the pubis.
Use directional terms.
Answer: Posterioir would be your answer. :D
Explanation:
how do trees show the characteristics of life?
Answer: trees produce oxygen and to breath we need oxygen without oxygen we could die.
Explanation:
GRADE 8 BIOLOGY PLS HELP
Membrane proteins can serve a variety of key functions:
Junctions – Serve to connect and join two cells together.
Enzymes – Fixing to membranes localises metabolic pathways.
Transport – Responsible for facilitated diffusion and active transport.
Recognition – May function as markers for cellular identification.
What type of protein will fight disease
Scientist have many problems that they are working on but are unable to reach a useful solution. There are a number of constraints that can make problems unable to have a solution. Match the current scientific problem and the major constraint to finding a solution PLEASE ANSWER THE PICTURE ONLY ANSWER IF YOU KNOW THIS
If a human body requires artificial support for respiration, heartbeat, blood pressure and metabolism, at what point does it cease to be “vegetative” and become dead?
Answer:
At brain death.
Explanation:
If an individual is awake but not conscious of what is happening in the surrounding environments the person is in the vegetative state.Such individual could respond to certain reflexes as eye blinking,withdrawal of hands in response to touch, ability to sleep and wake up at normal sensations.However, cognitive functions and sensory responses which are related to emotions are not responded to.It is different from Coma in which the individual lacks ability to be aware of the environments and tom be awake or alert.
The vegetative state ends when brain deaths occurs.This is the state when all brain activities are lost permanently. Breathing seized,and contact with the external world is cut.Thus, the functions of the brain which were supported by artificial supports are lost because the parts of the brain which control breathing,heartbeat ,and blood pressure are dead. Therefore, the life supports can not stimulate them to life
Which statement is true?(1 point) In stems, auxin accumulation will occur on the side that is away from the light source, and cell elongation will occur on the opposite side. In stems, auxin accumulation will occur on the side that is near the light source, and cell elongation will occur on the opposite side. In stems, auxin accumulation and cell elongation will occur on the side that is near the light source. In stems, auxin accumulation and cell elongation will occur on the side that is away from the light source.
Answer:
In stems, auxin accumulation will occur on the side that is away from the light source, and cell elongation will occur on the opposite side.
Hope it's correct,
As I'm not so sure.
Cell elongation happens on the side of stems opposite the light source, while auxin accumulation happens on the side facing the light source.
What is the impact of auxin in plant cells?It is generally known that the plant hormone auxin promotes cell elongation by lengthening cell walls. By causing wall loosening, auxin contributes to the modulation of cell wall characteristics.
The apical meristem's auxin-producing cells encourage shoot and root growth while inhibiting the development of lateral (axillary) buds.
Ensuring a plant uses its energy to grow upward and toward the light in an effort to outcompete other plants. Auxin encourages the plant's cell expansion and lengthening.
Auxin changes the flexibility of the plant wall during the elongation process, making it simpler for the plant to grow higher. Additionally, auxin affects how roots form.
Therefore, In stems, auxin accumulation will occur on the side that is away from the light source, and cell elongation will occur on the opposite side.
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name four cycles that help to recycle matter in the biosphere
Answer:
Nitrogen cycle
Carbon cycle
Sulfur cycle
Phosphorus cycle
Explanation:
The material cycle refers to the pathway through which important materials in the biosphere take from their source of production to where they are utilized and back to their source of production. It can also be defined as the pathway by which important materials move between the living and non-living components of the earth.
The important materials include nitrogen, carbon, sulfur, phosphorus, etc. The cycles that help to recycle these materials are named according to the name of the material. Hence, there is a nitrogen cycle, carbon cycle, sulfur cycle, and phosphorus cycle respectively.
When a substance or large molecule is enclosed by a membrane in a vesicle within the cell, the membrane of the vesicle fuses with the cell membrane and releases the substance out into the cell's surroundings. This is:
exocytosis
endocytosis
facilitated diffusion
osmosis
Answer:
Exocytosis
Explanation:
39. Dan, who has sickle cell anemia, has Type B blood and needs a blood transfusion. Which of the
following people cannot donate blood to Dan?
A. Jill who has Type B blood
B. Tyrone who has Type O blood
C. Jane who has Type B+ blood
D. Lisa who has Type AB blood
Answer:
D.
Explanation:
Lisa whi has type AB blood can't donate.
How do you think plant cells differ from animal cells
Answer:
Both animal and plant cells have mitochondria, but only plant cells have chloroplasts. Plants don’t get their sugar from eating food, so they need to make sugar from sunlight. This process (photosynthesis) takes place in the chloroplast. Once the sugar is made, it is then broken down by the mitochondria to make energy for the cell. Because animals get sugar from the food they eat, they do not need chloroplasts: just mitochondria.
Both plant and animal cells have vacuoles. A plant cell contains a large, singular vacuole that is used for storage and maintaining the shape of the cell. In contrast, animal cells have many, smaller vacuoles.
Plant cells have a cell wall, as well as a cell membrane. In plants, the cell wall surrounds the cell membrane. This gives the plant cell its unique rectangular shape. Animal cells simply have a cell membrane, but no cell wall.
Explanation: