Answer:
As there are no moving parts, fuel cells operate silently and with extremely high reliability. Due to their chemistry, fuel cells are very clean. Fuel cells that use pure hydrogen fuel are completely carbon-free, with their only byproducts being electricity, heat, and water.
Answer:
As there are no moving parts, fuel cells operate silently and with extremely high reliability. Due to their chemistry, fuel cells are very clean. Fuel cells that use pure hydrogen fuel are completely carbon-free, with their only byproducts being electricity, heat, and water.
Around what time was the cure for scurvy found?
Explanation:
During the Age of Sail, it was assumed that 50 percent of the sailors would die of scurvy on a major trip. A Scottish surgeon in the Royal Navy, James Lind, is generally credited with proving that scurvy can be successfully treated with citrus fruit in 1753.
Answer:
in 1747 by James Lind ......
A student made a list of structures are observed in cells from two different organisms which statement describes the most likely difference in the way that organism one and organism two obtain energy
interphase definition ?
Answer:
The resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis.
Answer:
the resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis.
what is true of a fossil that is classified as a transitional form?
Given our understanding of the situation, we can confirm that a fossil classified as a transitional form, will show characteristics both of its ancestors and of the descendants that derived from it.
Transitional fossils are just that, fossilized remains of a transitional phase of evolution. What this means is that as species evolve, there will always be a point in time where a species is at a halfway point in between the species from which it comes, and the species that it will become.
These fossils, due to being a halfway point, will have characteristics that belong to their ancestors, but also characteristics that belong to their descendants, which is only logical considering that evolution is a process that spans many generations, not something instant.
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Question 4 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
A. It helps the cell absorb as many different molecules as possible.
B. It is better for the cell if most molecules are prevented from
entering
C. Transport proteins allow only enzymes to pass through the
membrane.
D. The cell works better when it contains fewer proteins.
Oh
Answer:
(B) It is better for the cell if most molecules are prevented from entering.
I hope this helped at all.
The products of photosynthesis are the
Answer:
Oxygen (byproduct) and Glucose (sugar for cell use)
Explanation:
A cycle between cellular respiration and photosynthesis exists in plants.
Photosynthesis -> Oxygen and Glucose - > Cellular respiration - > Carbon Dioxide and ATP (energy for cellular use)
Then, the cycle continues.
Where does mixed livestock and crop farming predominantly occur?
Answer:
Asia and in countries such as India, Malaysia, Indonesia, Afghanistan, South Africa, China, Central Europe, Canada, and Russia.
Explanation:
Several generations of one family have lived in their home in the mountains since the 1800s. The government designates a new wilderness area, putting the house within the wilderness boundaries. The family is now forbidden to use motorized vehicles to reach their home, they cannot operate a chainsaw to cut firewood, and they cannot string lines for telephones and electricity. This would be an example of: __________
Answer:
conservation with no sensitivity to local and individual circumstances.
Explanation:
To maintain homeostasis, ADH functions via a ______ feedback mechanism that responds to blood ______ concentration.
Answer:
negative, salt
Explanation:
ADH functions via a negative feedback mechanism that responds to blood salt concentration to maintain homeostasis.
What is homeostasis?In order to maintain a constant state between internal conditions and the external environment, a cell's response to its environment is known as homeostasis.
Because of their complexity and uniqueness to living things, the coordinated physiological responses that keep the majority of the body's dynamic equilibrium in place have been given the name "homeostasis."
Ex: When it's cold outside, we start to shiver and use energy to stabilize our body temperature. This is where the cell regulates cell temperature, fluid balance, sugar balance, etc. through it.
Therefore, there is negative feedback that responds to blood salt concentration.
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A particular diploid plant species has 48 chromosomes, or two sets. A mutation occurs and gametes with 48 chromosomes are produced. If self-fertilization occurs, the zygote will have _____ set(s) of chromosomes.
Answer:
4 sets
Explanation:
Both gametes will each have 48 chromosomes (2 sets). So if fertilisation were to occur, two of those gametes (both with 2 sets each) the zygote will have 4 sets.
If self-fertilisation occurs, the zygote will have two set(s) of chromosomes.
What is self fertilisation?Self-fertilization, also known as self-pollination, is a type of sexual reproduction in which a hermaphroditic or monoecious organism fertilizes its own gametes. This means that the male and female reproductive organs are present in the same individual, allowing for self-fertilization to occur.
In plants, self-fertilization can occur through a variety of mechanisms, including self-pollination by wind or gravity, or by the transfer of pollen from the anther to the stigma of the same flower. Self-fertilization can also occur in animals that are hermaphroditic, such as some species of snails and slugs.
Self-fertilization can have both advantages and disadvantages for the organism. It can ensure reproduction in isolated or low-density populations, but it can also limit genetic diversity and increase the risk of inbreeding depression.
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what is the difference between ribose and deoxyribose
the process that continually adds new material to the ocean floor
Answer:
Sea-floor spreading i think not a 100 percent.
Explanation:
help me pls:
7. Distinguish among asymmetry, radial symmetry, and bilateral symmetry.
8. Define cephalization. What is its relationship to bilateral symmetry?
Answer:
Bilateral symmetry because animals are able to be cut down the middle and have two equal half’s.
Explanation:
Cephalization means an evolutionary trend where nervous tissue over many generations become concentrated on one end of the organism........... I hope this helps !!!!!
umm... but UwU❤️❤️
If 2n=46 for a particular cell, then the chromosome number in each cell after meiosis would be
a. 92
b. 46
c. 23
d. 6
e. none of the above
Answer:
C. 23
Explanation:
In humans (2n = 46), who have 23 pairs of chromosomes, the number of chromosomes is reduced by half at the end of meiosis I (n = 23).
When is the kinetic energy of a pendulum the least?
Question 5 options:
Half the distance on the path traveling back down.
On the path beginning the upwards swing.
At the bottom of the swing.
At the top of the swing where it briefly stops before changing direction.
Answer:
The answer is D. At the top of the swing where it briefly stops before changing direction.
Explanation:
When the pendulum is either at its far right or left position, the bob is at rest and therefore its kinetic energy is equal to zero- making it the lowest point of kinetic energy during the whole process.
Answer:
The answer is C
Explanation:
because when your on the swing the most kinetic energy is where you start to go to the upwards part right when the drop happens
it allows you to swing up very high making the option C correct
I lived in Africa around 15 mya. I had bilophodont molars ad a frugivorous diet. I had some adaptations for terrestrial quadrupedalism. What fossil primate am I
Answer: Victoriapithecus
Explanation:
A goniometer measures __________. A. A joint's maximum range of motion B. A joint's minimum range of motion C. A joint's flexion D. Extension and hyperextension Please select the best answer from the choices provided. A B C D.
A goniometer measures __________..
Answer : A
Explanation : A joint's maximum range of motion
Hope this helps you!
Answer:
A. a joint's maximum range of motion
Explanation:
A goniometer is a device that is used to measure the maximum arc of motion made by a joint. The traditional goniometer consists of a protractor and two extending arms ,one of the arms is movable while the other one is stationary.To take measurements the center of the goniometer is aligned with the center of a joint. Then the arm of the goniometer is moved until it aligns with the limb that has been moved to a maximum position that the joint allows. The angle made between the two arms of the goniometer is measured in degrees and is the maximum range of motion of the joint.
Which of the following choices is a component in the habitat of a wetlands ecosystem?A. Moss
B. Bacteria
C. Water
D. Blue Heron
Answer: C.-Water
Explanation: Water is the main component when it comes to wetlands.
Habitat is the environmental place where organisms like plant and animal lives. Water is the habitat component present in the wetland ecosystem. Thus, option C is correct.
What is an ecosystem?An ecosystem is a biological community that lives together and has an interconnection with each other as well as their surroundings and other abiotic factors.
The ecosystem can be found in freshwater, marine, or terrestrial places. The wetland ecosystem is covered by water in all seasons and is seen in the form of swamps, marshes, etc.
The wetland is characterized by the presence of water that controls the erosion, water quality, abatement of the flood, etc.
Therefore, water is a component of the wetland ecosystem.
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1. Where does the energy of food originally come from?
If I had a section of DNA that contains 350 nucleotides and the A's and Ts made up 200 of
those nucleotides, how many As
Gs
Cs
and Ts
do I have?(.5 points each response)
Answer:
100 A
100 T
75 C
75 G
Explanation:
there will be an equal amount of thymine and adenine since they bind together so, 200/2 = 100 each
now there is 150 nucleotides left
guanine binds to cytosine so they also have an equal amount, so 150/2=75
Answer:
As = 100
Ts = 100
Gs = 75
Cs = 75
Hope you could get an idea from here.
Doubt clarification - use comment section.
Carol and Sam were using the microscope in science class. They used a dropper to put some pond water on their microscope slide. This is what they saw. "That is something living," said Sam. "I don't think so," said Carol. What do you think? Explain. Question 13 options: This is not alive. It is not moving or responding. This sample is made of identical units. It is not alive. This is a multicellular organism made of cells. It is living.
Answer: Sam is correct
Explanation:
Ponds use microrganisms
So pretty much that’s why it isn’t safe to drink since it has germs
are there other tests that could be used to determine if cyclohexanol is present in your product? give at least one test with some detail of the expected result for the presence of cyclohexanol.
One of the many tests that may be used to identify the presence of cyclohexanol in a product is that of the Lucas test.
The Lucas test is a chemical reactant test to determine the presence and level of alcoholism in a solution. Cyclohexanol has many chemical properties as do most substances, one of which is the presence of an alcohol group.
The presence of this chemical group makes it possible to test for cyclohexanol using the Lucas test. The Lucas test will cause reactions in the presence of alcohol and transform alcohols into chloroalkanes, which tend to be nearly insoluble in aquatic solutions. Given this, a positive result will look like the solution separates into a cloudy chloroalkane-containing part on top of a much clearer layer.
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Which organelle captures energy from the sunlight and uses it to produce food in a plant cells
A. Chloroplast
B. Nucleus
C. Ribosomes
D. Mitochondria
A DNA microarray contains immobilized DNA that corresponds to different genes. The microarray is hybridized with fluorescently labeled DNA probes reverse transcribed from the control and experimental mRNA samples. The control probe is labeled with a red fluorochrome, while the experimental probe is labeled with a green fluorochrome. What will be the color of the spot representing a gene with moderately upregulated expression in the experimental sample relative to the control one
The color of the spot of a gene with moderately upregulated expression will be lime-green. A DNA microarray is a technique used to determine the expression level of many genes simultaneously.
A DNA microarray is a laboratory technique used to identify the genes that are being expressed in a cell.
A DNA microarray contains many tiny spots of specifically labeled cDNA samples referred to as probes, which can be hybridized by base complementarity to transcribed (mRNA) gene sequences.
In the DNA microarray, the probes can be fluorescently marked gene sequences.
After hybridization, the DNA microarray is then scanned in order to determine the level of gene expression of each mRNA that hybridizes with their corresponding probes on the slide.
In this case, green spots evidence genes that are being strongly expressed in the sample.
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Which of the following is another name for ova?
Answer:
d. All of the above
Explanation:is correct. post protected
Answer:
All of them are the same word
What is the term describing the process that occurs when a species evolves into a new species without a physical barrier separating populations?
Answer:
Sympatric speciation should be correct.
Explanation:
Hope this helps.
The formation of clouds is caused by which of the following?
O condensation
O evaporation
O infiltration
O precipitation
Answer:
condensation
Explanation:
once evaporation occurs the water vapor rises and condenses into clouds when it hits the colder air higher in the atmosphere.
Answer: Condensation
Condensation is the change of the state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. This word mostly refers to the water cycle.
Please help me!!! ASAP
cellular respiration
Explanation:
A
Imagine for a moment that a large artery formed two branches carrying blood to two different organs. Branch 1 has a radius of 0.5 cm and Branch 2 has a radius of 1.0 cm. If the blood flow rate in Branch 1 is 2ml/min, what do you expect the blood flow rate of Branch 2 to be
The flow rate through Branch 2 is 8·√2 ml/min
Reasons:
Radius of Branch 1 = 0.5 cm
Radius of Branch 2 = 1.0 cm
Flow rate, Q = Velocity, V × Area, A
The area of the Branch 1 = π × 0.5² = 0.25·π
We have;
[tex]\dfrac{v_1^2}{r_1} = \dfrac{v_2^2}{r_2}[/tex]
Which gives;
[tex]v_2 = \mathbf{\sqrt{\dfrac{v_1^2}{r_1} \times r_2}}[/tex]
[tex]The \ velocity \ of \ Branch 1 , \ v_1 = \dfrac{2}{\pi \times 0.5^2} = \dfrac{8}{\pi}[/tex]
Therefore;
[tex]v_2 = \sqrt{\dfrac{\left(\dfrac{8}{\pi} \right) ^2}{0.5} \times1} = 8 \cdot\dfrac{\sqrt{2} }{\pi}[/tex]
[tex]The \ flow \ rate, \ Q_2 = 8 \cdot\dfrac{\sqrt{2} }{\pi} \times \pi \times 1^2 = 8 \times \sqrt{2}[/tex]
The flow rate through Branch 2 = 8·√2 ml/min
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Why isn’t color a very useful property in identifying a mineral?
Answer:
Generally, color alone is not the best tool in identification because color can be highly variable. Some minerals can occur in a variety of different colors due to impurities in the chemical makeup of the mineral.
Explanation: Hope that's what your looking for.