Question 9 of 25
Which is an example of current electricity?
A. Positively charged particles are attracted to negatively charged
particles.
OB. Negative and positive electric charges build up in different regions
of a cloud.
OC. Electrons flow from an outlet into a toaster, causing it to heat a
slice of bread.
OD. A person rubs a shoe on a rug, causing extra electrons to be
transferred to the shoe.
OC
because Electric current is the flow of electrons through a complete circuit of conductors. It is used to power everything
Answer:
OD is an example of current electricity
Which of the following represents a scenario of potassium cyanide toxicity?
-The substrate-level phosphorylation of glucose generates all the ATP required by the cell.
-Chemiosmosis still occurs in the inner mitochondrial membrane and generates all the ATP during cellular respiration.
-Oxidative phosphorylation that generates most of the ATP is blocked, and oxygen cannot accept the electrons from NADH.
-Electrons cannot be transferred from NAD to NADH, and ATP generation from both the substrate level and oxidative phosphorylation is blocked.
Answer:
Oxidative phosphorylation that generates most of the ATP is blocked, and oxygen cannot accept the electrons from NADH.
Explanation: Sorry this is late and may be wrong but it is my best guess and here is why:
Potassium cyanide blocks the ETC where the majority of ATP is produced. The ETC is a oxidative phosphorylation process where oxygen is needed as the final electron acceptor of NADH.
The first answer can be eleminated because oxidative phosphorylation produces the most ATP.
The second answer can be eleminated because chemiosmosis does not generate ALL the ATP during cellular respiration, but does produce most of it. Still they worded it as an "all or nothing" type of question so I don't think it is correct.
The fourth answer may not be correct because NAD does not pass on an electron to NADH. Instead, NADH donstes electrons to the ETC and is then turned into NAD. So the process listed is technically backwords.
Sorry I can't be sure about the answer but this is how I broke it down.
Answer: Should be C
Just took the test on edge <3 you all!!
What is the main light absorbing pigment found in plant leaves?
A) chloroplasts
B) carotenoids
C) grana
D) chlorophyll
Answer:
pretty sure its d
Explanation:
Answer:
D) chlorophyll
I hope this helps!
Explain the all-or-none law of action potentials and describe the effect of increased stimulus strength on action potential production. How do the refractory periods affect the frequency of action potential production
If the stimulus reaches the threshold an action potential will be generated. If the stimulus doesn't reach it no action potential will be generated. If the stimulus will be stronger the action potential will have the same amplitude. The refractory period makes it harder to generate an action potential so they decrease the frequency of action potential production.
which symbol represents atoms that are isotopes of an element?
a. C-14 and N-14
b. O-16 and O-18
c. I-131 and I-131
d. Rn-222 and Ra-222
Explanation:
O-16 and O-18 are isotopes as they have the same element (oxygen) but different atomic mass (16 and 18).
The symbol represents the atoms that are isotopes are O-16 and O-18, the correct option is b.
What are isotopes?Isotopes are members of an element family that have the same number of protons but have different numbers of neutrons.
The atomic number of an element on the Periodic Table is determined by the number of protons in its nucleus. Carbon, for example, has six protons and is atomic number 6.
The mass of an isotope, which is the total number of protons and neutrons, is used to identify it. Isotopes are typically written in one of two ways.
The most common illustration are hydrogen as well as carbon isotopes. When it relates to the element Hydrogen, it has three stable isotopes: protium, deuterium, and tritium.
These isotopes share the same number of protons but differ in neutron count, with protium having zero, deuterium having one, and tritium having two.
Thus, the correct option is b.
For more details regarding isotopes, visit:
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A researcher observes that when two heterozygous plants with red flowers are crossed the resulting offspring include plants with red white, or pink flowers The researcher proposes the rullrypethesis that flower color is the result of independent assortment and incomplete dominance The researchers climesach square value of 7.3 Assuming two degrees of freedom which of the following is the correct Interpretation of the chi-square analysis, using apvalue of 0.05 ? A. The null hypothesis should be rejected because the critical value is less than the calculated value B. The null hypothesis should not be rejected because the critical value is less than the calculated value C. The null hypothesis should not be rejected because the critical value is greater than the calculated value D. The null hypothesis should be rejected because the critical value is greater than the calculated value
Answer:
the correct answer is A
Explanation:
Chi squared is a statistical test that is used either to test whether there is a significant difference, goodness of fit or an association between observed and expected values. the sqaure for this is less than the statistical value originally found, therefor making the null hypothesis void.
The Chi-square test is defined as the statistically significant difference between the expected frequency and observed frequencies.
The correct option is:
Option A. The null hypothesis should be rejected because the critical value is less than the calculated value
The Chi-square test is based on hypothetical facts to determine the significant difference in the calculated and observed frequencies.
The null hypothesis is rejected because the square for the value is less than the statistical or calculated value originally found. Thus, the hypothesis is null and void.
Therefore, the correct option is A.
To know more about the Chi-square test, refer to the following link:
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how do the sea birds
contribute to the the pphosphoruos cycle
Answer:
Phosphorous returns to the earth through fish harvest and the collection of fertilizer made by seabirds.
Explanation:
Seabird droppings, also known as guano, can be used as commercial fertilizer, in addition to being vital in terms of the number of nutrients in marine ecosystems.
Compare rates of succession: primary succession such as on new lava flow vs secondary succession in a forest that recently burned. A. Primary succession is faster than secondary succession B. Secondary succession is faster than primary succession C. Primary and secondary succession usually proceed at the same rate because they both followed a large disturbance. D. Succession rates would depend on the number of early arriving facilitator species.
Answer:
The answer is option D "Succession rates would depend on the number of early arriving facilitator species"
Explanation:
Ecologists have a solid interest in knowing how communities structure and change over the long run. Indeed, they have invested a ton of energy seeing how complex communities, such as forests, emerge from void land or uncovered stone. They study, for instance, locales where volcanic eruptions, ice sheet retreats, or out of control fires have occurred, clearing land or uncovering rock.
In examining these destinations over the long haul, ecologists have seen steady cycles of progress in natural communities. As a rule, a community emerging in an upset territory experiences a succession of movements in synthesis, frequently throughout numerous years. This arrangement of changes is called natural succession.
Succession is a progression of reformist changes in the structure of an ecological community over the long run.
In primary succession, recently uncovered or recently shaped stone is colonized by living things unexpectedly.
In secondary succession, a territory recently involved by living things is upset then recolonized following the aggravation.
PLEASE HELP!
(click on the picture for it to be clear)
have a blessed day.
Answer:
plastic
Explanation:
how do dirty wells and ponds harm us?
point)
This is turned to bring the object being viewed closer.
Answer:
Revolving nosepiece
Explanation:
The revolving nosepiece (also called the turret) is the part of the microscope we can turn in order to view an object through different objective lenses. Objective lenses, which provide different levels of magnification (usually 4x, 10x, 40x, and 100x), are all attached to the revolving nosepiece. It allows us to switch lenses from those that provide less magnification to those that provide more. This is how we can see more details on an object we're observing.
You can see what this part of the microscope looks like in the image attached below:
What is represented in the diagram? tissue, organ system, organ, cell
Answer:
i need the diagram but im going to go with my gut and say organ or organ system because you cant draw out a cell in the body and tissue just dont make since.
Explanation:
Name two parts of the cell that are in the plant cells only
Answer:
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole
Explanation:
Which of the following is NOT correctly paired with its description?
Answer:
there is nothing there so how are we supposed to know
Explanation:
Answer:
Explanation:
We aren't able to help because you didn't show us any options. Next time put the Options.
Long legs (L) in racing horses is dominant to short legs (l). Good muscle tone (G) is dominant to weak muscle tone (g). Determine the phenotypes of the F1 generation resulting from a cross between a heterozygous long legged, weak muscled horse and a heterozygous long legged, strong horse
Answer:
See the answer below
Explanation:
Long leg (L) is dominant over short leg (l) and Good muscles (G) is dominant over weak muscles (g).
Heterozygous long leg, weak muscle = Llgg
Heterozygous long leg, strong muscle = LlGg
Llgg x LlGg
Offspring:
2 LLGg - Long leg, strong muscle
4 LlGg - Long leg, strong muscle
2 LLgg - Long leg, weak muscle
4 Llgg - long leg, weak muscle
2 llGg - short leg, strong muscle
2 llgg - short leg, weak muscle
Ratio of offspring with long leg and strong muscle = 6/16 or 3/8
Ratio of offspring with long leg and weak muscle = 6/16 or 3/8
Ratio of offspring with short leg and strong muscle = 2/16 or 1/8
Ratio of offspring with short leg and weak muscle = 2/16 or 1/8
The F1 generation resulting from a cross between a heterozygous long-legged, weak muscled horse and a heterozygous long-legged, strong horse
3/8- long leg and good muscle tone3/8- long leg and good muscle tone3/8- long leg and weak muscle tone3/8- long leg and good muscle tone3/8- long leg and weak muscle tone1/-8- shirt leg and good muscle tone3/8- long leg and good muscle tone3/8- long leg and weak muscle tone1/-8- shirt leg and good muscle tone1/8- short leg and weak muscle toneGiven:Long legs (L) in racing horses is dominant to short legs (l)Good muscle tone (G) is dominant to weak muscle tone (g)Cross:a heterozygous long-legged, weak muscled horse - Llgga heterozygous long-legged, strong horse - LlGgLlgg X LlGg
Gametes:Lg, lg and LG, LG, lG, lg
Punnett square:
attached as image
F1- phenotypes:
3/8- long leg and good muscle tone
3/8- long leg and weak muscle tone 1/-8- shirt leg and good muscle tone 1/8- short leg and weak muscle tone
Learn more about dominant trait:
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which of the following statesman's is correct.
1.green plants are the only organisms that photosynthesize.
2. photosynthesis turns sunlight into glucose.
3. photosynthesis occurs in the cytoplasm of eukaryotes and prokaryotes.
4.photosynthesis occurs in the chloroplasts of eukaryotes and cytoplasm of some prokaryotes.
The fourth statement is the only correct statement since prokaryotes don't have chloroplasts
Hollow bones
Survival Advantage
Answer:They can fit into small or tight spaces.
Explanation:
what is the role/function of neurohormones in annelied?
Answer:
Phylum Annelida
There is a complex just beneath the brain that functions as a neurohemal organ. The epithelial cells found in this complex may be secretory as well, but this has not been proved. Neurohormones are released from the infracerebral complex into the coelomic fluid through which they travel to their targets.
it it is located at the base of the brain near the pituitary gland it's very small the hypothalamus plays a crucial role in many important functions include releasing hormones regulating body temperature.
2. Protein A has a binding site for ligand X with a Kd of 10-6M. Protein B has a binding site for ligand X with a Kd of 10-9M. Which protein has a higher affinity for ligand X
Answer:
Protein B has a higher affinity for ligand C than protein A
Explanation:
Binding affinity is a measure of the strength of the bonds or interactions between a single biomolecule or receptor to its ligand. A ligand is usually a small molecule that binds to a specific receptor.
The receptor is usually a large molecule that contains a specific site for the binding of ligand.
Binding affinity is usually measured by the equilibrium dissociation constant (KD). The equilibrium dissociation constant KD is a ratio of the dissociation and the association of ligand to the receptor. The value of KD is used to evaluate and compare the strengths of bimolecular interactions. The larger the KD value, the more weakly the target molecule and ligand are attracted to and bind to one another.
The higher the dissociation constant (KD), the weaker the affinity is between the interacting molecules, whereas, the smaller the KD value, the greater the binding affinity of the ligand for its target.
Protein B has a KD value of 10⁻⁹ M while Protein A has a KD of 10⁻⁶ M.
Ration of KD of protein B to protein A = 10⁻⁹ M/10⁻⁶ M = 10⁻³
Therefore, protein B has a KD value which is 1000 times smaller than the KD of protein A.
Is the process by which simple materials are chemically combined to form more complex materials
Answer:
synthesesis
Explanation:
your welcome! (:
What cellular function does the respiration rate represent
Answer:
Uh, Cellular Respiration
Explanation:
Um... if this isn't it, I have no idea.
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Answer:
Thats cool, did you make yourself?
Explanation:
Under which of the following circumstances might the nutrient levels in manure be tested?
if it will be sold as fertilizer
if it is thought to contain pathogens
if a farmer or rancher wants to change the nutrients in his or her soil
if a CAFO’s Animal Waste Management Plan (AWMP) is being reevaluated
Answer: if a farmer or rancher wants to change the nutrients in his or her soil
Explanation:
The nutrients in the manure plays an important role in growth and development of the crops and they improve the fertility of the soil. Certain mineral elements present in the manure can change the pH of the soil which can affect the growth of the plants. Thus the mineral content of the manure should be tested thoroughly before changing the nutrients in the soil by providing the manure to the soil.
Answer:
If the farmer wants to change the nutrients in his or her soil.
Explanation:
Took the test.
Select the correct answer.ASAP
Environmental biotechnologists use bacteria to decompose sulfur liquor, a waste product of the paper industry. Which useful by-product do the bacteria produce?
A.
protropin
B.
ethane
C.
insulin
D.
methane
E.
Carbon dioxide
Answer:
a
Explanation:
whale is a mammal give reasons
Answer:
Because
Explanation:
Whales, along with dolphins and porpoises, are warm-blooded mammals and breathe air like humans do. There are some significant differences between whales and fish: ... Fish use gills to extract air from water. Whales give birth to live young.
Please help!!!!!! Which is incorrect?
Answer:
Segment 3
Explanation:
A cannot connect to C
Use the map to answer the following question:
Answer:
Hello, what is the questiom=n?
Explanation:
which two body system, when working together, give your body shape and allows you to move around, like the boy seen here
You cross an individual with genotype XXYYZZ to an individual with genotype xxyyzz, and F1 progeny are collected. Assume interference between regions (X-Y and Y-Z) is 100%. When an F1 individual produces gametes, what proportion of its gametes would have xyz genotype
In the first cross one of the parent has only dominant allele and one has only recessive allele that means the offspring in F1 will be 100% heterozygous
XxYyZz
the gametes resulted from this individual are
XYZ XYz XyZ Xyz xYZ xYz xyZ xyz
it produces 8 types of gamets one of which is xyz the proportion is 1/8
How can the idea that different minerals are formed in different environments provide evidence for energy and matter cycling?
Please do not copy and put in your own words.
Answer:
Various environment have unique environmental properties that make up matter.
Explanation:
Life on earth follows a cyclic nature, the energy that is received from the sun is recycled back to space. Similarly, various environments such as terrestrial, aquatic all are possessed different energy and have matter circulating through the ecosystem. Different factors like climate vegetation and other organisms help in the formation of soil which constitutes certain minerals. Similarly, the different region has diverse geologic settings that lead to the formation of diverse minerals such as limestone, sandstone, and resources like coal, petroleum, etc.