Answer:
Hi hope this is right
Explanation:
Echinoderms have a spiny endoskeleton. They have radial symmetry as adults but bilateral symmetry as larvae. Echinoderms have a unique water vascular system with tube feet. This allows slow but powerful movement.
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Why can't the amount of water in the seed gizmo lab be the dependent variable?
Answer:
The dependent variable is usually what scientists measure in an experiment. In this case, the amount of water is the independent variable because that is what you're changing in the experiment: one seed gets a lot of water and the other seed only gets a little water.
Explanation:
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if there is an error during the transcription of a gene, what will be the consequence?
Answer:
The final portein might not be for functional... the segment of the DNA made molecule where messager RNA synthesis begins called the
plz help me with why
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Answer:
the flavor will neutralize
Explanation:
if you're plugging your nose, it blocks most of the taste out of a food item. so while biting into an onion while plugging your nose, it will neutralize the strong flavor and make it taste more like an apple or potato since they have very similar textures. hope this helps!
The negative membrane potential in a resting neuron is primarily due to :___________
a. high levels of chloride ions in the cell. diffusion of potassium out of the cell.
b. a higher permeability of the membrane for potassium compared to sodium.
c. both diffusion of potassium out of the cell and a higher permeability of the membrane for potassium compared to sodium are correct.
Answer:
c
Explanation:
When the membrane of the neuron is in a state of rest, the interior of the cell has a more negative charge in relation to the exterior, therefore option "c" is correct.
What is the membrane potential in a resting neuron?It is a phenomenon that occurs when the nerve cell membrane is not altered by action potentials.
Characteristics of a resting neuronThe resting potential is determined by the concentration gradients of the ions, both inside and outside the neuron, and by the permeability of the membrane.When a cell is at rest, the potassium channels are open, the potassium will tend to flow outwards (K ions), they are positive charges, therefore the cell interior will be negative with respect to the cell exterior.Therefore, we can conclude that the resting potential of a membrane occurs when they are not transmitting signals.
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Which statement is a hypothesis that would best address the question "Are rainbow trout eating all the macroinvertebrates in streams and starving out other fish species?" If rainbow trout are eating all the macroinvertebrates, then keeping rainbow trout out of new river habitats will allow native species to recover. If rainbow trout are eating all the macroinvertebrates, then introducing them to other streams will help native species recover. Rainbow trout will eat a variety of macroinvertebrates and native fish species. Rainbow trout hunt and prey upon native fish species.
A possible hypothesis here is; "If rainbow trout are eating all the macroinvertebrates, then keeping rainbow trout out of new river habitats will allow native species to recover."
A hypothesis is a statement that is tentatively put forward to explain an observation. Usually, a hypothesis is an if .... then statement. This is one of the first things that we must look out for when considering each of the statements.
Since we have observed that rainbow trout eating all the macroinvertebrates in streams and starving out other fish species, it follows that keeping rainbow trout out of new river habitats will allow native species to recover."
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what is the species that is most distinct through the largest number of genetic differences or the most different morphologically, compared to other species of interest, called?
An outgroup is a distantly related group of animals used to determine the evolutionary relationships of the ingroup.
What are outgroup species?An outgroup, which differs from sociological outgroups, is a group of organisms that are more distantly connected and that is used as a reference group when assessing the evolutionary relationships of the ingroup, the group of organisms that are the subject of the study.
Looking at a closely related species that is known to be phylogenetically distinct from the group of species we are researching is known as the "outgroup comparison" strategy. It is likely that the character state in that outgroup was ancestral to the group under study.
Examples are Gibbons, Marsupials, Echinoderms, and Gymnosperms.
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Which one of the following statements is correct regarding rods and cones in the human eye? . *
a. Cones are sensitive to dim light.
b. Cones are sensitive to bright light.
c. Rods are sensitive to bright light.
d. Rods can sense colour.
Answer:
Rods are sensative to bright light
Explanation:
Rodes are important for being able to see darkness, while Cones are importnat for seeing colors.
what is excretion meaning
Excretion is a process in which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys, and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. Excretion is an essential process in all forms of life.
In simple terms, the process of eliminating or expelling waste matter.
hope this helps have a great day and please do tag me brainliest if you are satisfied with the answer
Excretion is a process in which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys, and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. Excretion is an essential process in all forms of life.
Recent advances in technology have made vegetarian meals far cheaper to produce. Assuming that vegetarian meals and beef are
substitutes, what would be the expected change in the demand for beef, ceteris paribus? (1 point)
It is impossible to tell from the information provided.
The demand for beef would increase.
The demand for beef would decrease.
The demand for beef would be unaffected.
Check Answer
Answer:
C. The demand for beef would decrease.
Explanation:
The demand for beef would be unaffected be the expected change in the demand for beef, ceteris paribus. The correct option is C.
Thus, Consumers might be more likely to pick vegetarian options over beef due to cost considerations.
As a result of recent technological advancements that have made vegetarian meals more affordable to manufacture.
All else being equal (ceteris paribus), this shift in consumer preferences brought on by the relative affordability of vegetarian meals is expected to lead to a decline in the demand for beef.
Thus, The demand for beef would be unaffected be the expected change in the demand for beef, ceteris paribus. The correct option is C.
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what process usually uses carbon dioxide molecules
Answer:
respiration
Explanation:
respiration uses carbon dioxide molecules to make oxygen and water.
during which stage of meiosis does the diploid parent cell become four separate haploid cells?
Answer:
To summarize, meiosis is a cellular process in which a diploid parent cell divides into four haploid daughter cells. One very important event in meiosis is crossing over, which occurs between prophase and metaphase I. Crossing over increases genetic variation. The haploid cells produced through meiosis are otherwise known as gametes.
Explanation:
What is the charge for all of the elements in Group 1?
The atrioventricular valve consist of which of the following?
Answer:
posting my fren. D all
Explanation:
Which one of the following do allplants and animals need to survive?A.FoodB.DarknessC.LocomotionD.Light
Answer:
I believe D. Light
Explanation:
Well, light is the main source of food for plants along with the addition of carbon dioxide.
Answer:
a) food
Explanation:
IT is because animals and plants dont need darkness cause it is of no use to them. locomotion is only there in animals so it wont benefit both. and for light animals dont need it while plants do. so the only option that benefits both is option a food.
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escribe los pasos que le hacen falta al progreso productivo
Answer:
sí
Hablo español con fluidez. ¿Con qué necesitas ayuda?
Explanation:
on an island there are three mice populations. Population 2 cannot contact populations 1 and 3. What name is given to this situation?
Answer:
Isolation
Explanation:
On a island, there are three mice population in which one population cannot contact other populations. This situation is an example of allopatric speciation.
What is Allopatric speciation?Allopatric speciation is also referred to as geographic speciation. It is also called vicariant speciation. Allopatric speciation is a mode of speciation which occurs when the biological populations become geographically isolated from each other to an extent that it prevents or interferes with the normal gene flow in a population.
There are several factors which are required for the allopatric speciation to take place such as isolation of a population, time, and natural selection in an environment. Earthquakes, floods, and migration all are the ways through which a group of individuals of the same species can become isolated.
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which type of food does not contain unsaturated fatty acids
Answer:
olive, peanut, canola oils, avocados, almonds, hazelnuts, and pecans.
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Foods such as olive, peanut, canola oils, avocados, almonds, hazelnuts, and pecans does not contain unsaturated fatty acid.
What is lipid ?Lipid is defined as an organic compound which is unable to dissolve in water. The example of lipid is oils, waxes, hormones, and fats. The main function of lipid is to maintain the structure or components of cell membranes, storage site of energy, and important molecule of signaling.
Protein is defined as the large macromolecules and biomolecules that are made up of long chains of amino acid. There is various function of protein such as DNA replication, speeding up chemical reaction, and helps to maintain the structure of cell.
The main function of protein is to maintain the structure and function of organs, repair muscle, and muscles. Diet contain high protein is recommended for the purpose of losing weight, reducing fat, or increasing fat.
Therefore,Foods such as olive, peanut, canola oils, avocados, almonds, hazelnuts, and pecans does not contain unsaturated fatty acid.
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select the cell cycle impairments that you predict would lead to cancer. recall that cancer arises from unregulated, repeated cell divisions. choose all that apply.
Cancer cells can arise in a variety of ways, the most common, however, tends to be genetic mutations.
Genetic mutations can occur during the life of a cell due to outside factors such as:
The food we eatThe environment we expose the cell toThe substances that touch the cell (e.g skin cells)That being said, the most common time for a genetic mutation to take place is during cellular division. During this time the DNA that encodes the cells is duplicated. Genetic mutations in this DNA sometimes cause the elimination of programmed cell death.
Programmed cell death is what tells a cell when it should stop growing and dividing. This is a regulatory function designed to keep the number of cells at a balance, growing only when needed. As this cell multiplies, this produces an increasing number of cells that will not die. The accumulation of these cells is referred to as cancer.
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Your first assignment is to find an article talking about a scientific topic. This article can be from a source of your choosing (such as a newspaper or an internet article). You will need to include the article with your assignment. Once you have your article, you will write a short paper identifying two inferences made in this article and the facts the writer used to make these inferences. Then, elaborate on whether the two inferences made by the author are valid or more opinion-based. Be sure to include your reasoning of why you came to this conclusion. Some examples of where you can find articles about scientific topics are:
Answer:
Mahal kitang labis kahit titi mo is to short kantutan tyu Maya aylab u mharr
what a spring tide is
Explanation:
spring tide, tide of maximal range, near the time of new and full moon when the Sun and Moon —i.e., aligned with the Earth. Conjunction is the time during new moon when the Sun and Moon lie on the same side of the Earth.
A major misconception about natural selection is that this mechanism "gives organisms what they want or need so they can adapt to an environment". Explain why this is not correct.
A major misconception about natural selection is that this mechanism "gives organisms what they want or need so they can adapt to an environment". Why is this right or wrong? This is wrong because organisms can't will what they want or need.
Answer: Well, I know that this is later than usual but I believe that this is incorrect because...
Explanation: Not every organism can get what they need/want in an environment but they can give out genetic DNA within natural selection but they can't get the essentials for an adaptation of an environment.
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The question is in the image below:
Answer:
I think that the answer is true
If we check the Petri dish and food coloring in a few minutes, will all of the food coloring remain in the filter paper disk? What do you think will happen?
In a hypothetical population of butterflies, a dominant mutation in an allele that controls wing color has resulted in purple spots developing on the wings. The genetic change is heritable such that the offspring of butterflies who inherit at least one mutated allele will develop purple spots. The population of butterflies inhabits a windy field that contains many purple flowers. Individuals with purple spots are so well camouflaged on the purple flowers that they are eaten less frequently by predators. There are other fields with populations of the same species of butterfly nearby, but purple flowers are less prevalent in these nearby habitat areas. There are no borders between these fields and it is common for individuals from one population to be blown into another population by the wind. Despite the advantage the mutated allele confers to the butterflies in the field with many purple flowers, the mutated allele never occupies 100% of the gene pool and the population of butterflies always contains a mix of individuals with and without purple spots. What is the most likely explanation for why this trait does not spread entirely throughout the population
The movement of alleles into a population is called gene flow. The most likely explanation for why this trait does not entirely spread in the population is 'outside alleles enter the population through gene flow'.
Gene flow is caused by the migration and further reproduction of individuals in the population, or the transport of gametes from one population to another (e.g., the transport of pollen by pollinating bees).
Gene flow is an evolutionary force capable of modifying allele frequencies in a population.
In this case, despite the evolutionary advantage that the mutated allele confers to the butterflies, the frequency of this allele can not reach 100% due to the continued introduction of alleles from other populations (i.e., due to gene flow).
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the area of the brain stem that is important in controlling breathing is the:
Answer:
Medulla.
Explanation:
The primary role of the medulla is regulating our involuntary functions that keeps us alive such as breathing, swallowing and heart rate. As part of the brain stem, it also helps transfer neural messages to and from the brain and spinal cord. It is located at the junction of the spinal cord and brain.
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The respiratory center is medulla oblongata. It is involved in minute to minute control breathing.
What parts are involved in the brain stem ?
Brain stem is made up of pons and the medulla oblongata.
The apneustic and the pnuemotaxic centers of pons work together to just control rate of the breathing. In that the medulla just sends the signals to muscles that just initiate the inspiration and the expiration and just controls the nonrespiratory in the air movement of the reflexes like coughing and sneezing.
The cerebellum is well known to just be the part of neuronal circuitry that is just activated in the respiratory challenges that are such as the hunger for the air but are not been made to be involved in control of the spontaneous and the unobstructed breathing .
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why do chloroplasts make energy carriers during the light reactions?
Answer:
consist of array of chlorophyll molecules. *** The absorb energy excited electrons to a higher energy level. ... *** As H+ diffuse through ATP synthase, down their concentration gradient, the enzyme uses the energy of the moving ions to ATP.
Explanation:
Chloroplasts make energy carriers such as NADPH in which the light energy is caught up. Together with carbon dioxide they are used to synthesis glucose during light reaction in photosynthesis.
What is light reaction in photosynthesis ?The first series of events that start the process of photosynthesis require light and are referred to as light reactions or light-dependent reactions since they depend on light as their energy source.
Light energizes the electrons in the chlorophyll molecule as it reaches the chloroplast. These electrons accelerate to higher energy levels because they have taken in or caught that energy and are now carrying it. Excited electrons have high energy. Who wouldn't be thrilled to have the capacity to sustain life?
Chlorophyll is left at a loss when the excited electrons depart to take part in other reactions; eventually, they need to be replaced. In order to break water molecules during that replacement process, an enzyme complex and light are both necessary. Hence, energy carriers plays a significant role in light reaction.
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bradypnea is an abnormally slow rate of respiration usually less than
Answer: tachypnea
Explanation:
Choose the answer.
Which word root means water?
a. path/o
b. ot/o
c. hydr/o
d. hemat/o
Answer:
C: Hydro
Hope this helps!
Answer:
c
Explanation:
Drag each label to the correct location on the image. Identify the remaining processes and components of the carbon cycle.
Answer:
what labels
Explanation:
the thick mucus secreted by the tissues lining the respiratory passages is known as