Answer:• Apply a strip of masking tape, about 3 inches long, to the outside of each jar. Label each vial in writing on the masking tape with the marker. Write the following labels: hot water, cold water, RT water, vinegar, alcohol.
• Add 1 cup of the appropriate liquid to each of the labeled jars. Wear eye protection when working with vinegar or alcohol.
• Add 2 tablespoons of sugar to the pitcher of cold water. Immediately start the stopwatch and begin to stir slowly until all the brown sugar is dissolved. Record how long the process took.
• Add 2 tablespoons of sugar to the jug of hot water, start the timer and stir the liquid at the same rate as in step 1 until all the brown sugar is dissolved. Write down how long it takes.
• Repeat the process of adding the sugar, stirring, and the time it takes for all the sugar to dissolve for the jugs of room temperature water, alcohol, and vinegar.
• Compare your results. Does sugar dissolve faster or slower from one solvent to another? Does sugar completely dissolve in each solvent? How did the temperature of the water affect the time it took for the sugar to dissolve?
Explanation:
1,260 deer are living on an island that is 840 square kilometers in size. What
is the population density of the deer per square kilometer?
Answer:
1.5 deer/km^2
Explanation:
Acellus
When the resources in an
environment are at optimum
levels, what can happen?
The population size can grow
B
The population size can decrease
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Answer:
The population size grow /can grow
Answer:
the population size can grow
Explanation:
Passive solar houses have many large windows.
True
False
You have the following consumable items that you do not want spoiled by the action of microorganisms, but you have space in your refrigerator for only one. You have already opened each and consumed some. Which one of these is most likely to spoil fastest and should therefore be placed in the fridge?
A. Bread Flavored syrup (contains water, high sugar concentration, flavors, e.g., used to flavor coffee and drinks)
B. Apple juice 80 proof liquor (contains water, 40% ethanol, flavors)
C. Mineral water (contains water, minerals)
Answer:
Bread Flavored syrup (contains water, high sugar concentration, flavors, e.g., used to flavor coffee and drinks)
Explanation:
Food spoilage refers to a situation in which food is no longer fit for consumption due to the action of certain microorganisms on the food. Hence, microorganisms cause the spoilage of food and beverages.
The rate of action of microorganisms on different beverages depends mostly on the content of the beverages.
Yeasts are often responsible for the spoilage of beverages with high sugar content and these tend to spoil faster than other beverages.
A scientist is researching two different traits in an insect: body texture and color. Smooth body (B) is dominant to bumpy body (b), and gray (G) is dominant to white (g). A BbGg and a bbgg insect mate and produce the following 480 offspring: Phenotype Number of Offspring Smooth, gray 119 Bumpy, white 117 Smooth, white 123 Bumpy, gray 121 What type of inheritance is displayed from these offspring
Answer:
Independent assortment
Explanation:
The type of inheritance displayed by the offspring is a simple independent assortment inheritance according to Mendelian law.
The result of crossing BbGg and bbgg is as follows (see the attached image)
4 BbGg smooth and gray
4 Bbgg smooth and white
4 bbGg bumpy and gray
4 bbgg bumpy and white
The phenotype ratio from the cross is 1:1:1:1 as far as the independent assortment is concerned.
Now, looking at the population of each phenotype from the cross
Smooth, gray 119
Smooth, white 123
Bumpy, gray 121
Bumpy, white 117
119:123:121:117 is approximately equal to 1:1:1:1.
Hence, the cross agrees with Mendel's law of independent assortment of genes.
How many traffic accidents are attributed to drowsy driving
Answer:
Prevalence of Drowsy Driving Crashes
According to the National Highway Traffic Safety Administration, every year about 100,000 police-reported crashes involve drowsy driving. These crashes result in more than 1,550 fatalities and 71,000 injuries.
Explanation:
have a great day
PCR is a technique used to copy a target DNA sequence. Researchers often use DNA polymerase from Thermus aquaticus, a bacteria species that lives around hydrothermal vents.
denaturation 94-96 degrees celsius.
elongation 72 degrees celsius
annealing 68 degrees celsius
Which of the following best explains why the polymerase from the species T. aquaticus is often used
for PCR?
A. T. aquaticus polymerase has an optimal temperature of 68°C.
B. T. aquaticus polymerase does not denature at high temperatures.
C. T. aquaticus polymerase can be used more than once without degrading.
D. T. aquaticus polymerase adds nucleotides to both the 3' and 5' ends of DNA.
Answer:b
Explanation:because I said so
_________ is the enzyme responsible for breaking the hydrogen bonds between base pairs and separating the two strands of DNA.
Answer:
DNA helicases.
How many X chromosomes do females have?
Answer:
Typically, biologically female individuals have two X chromosomes
Explanation:
hope this helps! :)
HELP ASSAP PLEASE
Which of the following describes how the pollen must travel in order for pollination to occur?
Question 11 options:
. from the stigma to the anther
from an anther to the style
from an anther to the stigma
from the stigma to the pollen tube
Answer:
ewan the anther to stigma pero dapat stamen to the stigma
Answer:
I believe the answer is "from an anther to the stigma"
Explanation:
Because to be pollinated, pollen must be moved from a stamen to the stigma. When pollen from a plant's stamen is transferred to that same plant's stigma, it is called self-pollination. When pollen from a plant's stamen is transferred to a different plant's stigma, it is called cross-pollination.
What is the energy released from ATP used for?
Do you think murder committed during sleep walking is a punishable offense? Why?
Answer:
no because ur sleep walking and u cant control that
Answer:
yes and no
Explanation:
because when your asleep you dont know what your doing and when you get woken uo you tend to get violent so yea
Explain why two blond, straight faired parents cannot give birth to a brown, curly haired child.
Answer: genetics!!!!!
Explanation: If you both have blonde hair you wouldnt be able to give to a brown hair child!!! If you both have straight hair then your child shouldn’t have curly hair , it’s not possible.
Using a codon table, which amino acid is coded for by the codon G-G-G?
Answer:
Glycine
Explanation:
The user needs to drag the slider bar in an upwards direction in order to completely melt away a body layer when in the dissection study area.
True or False
Answer:
False
Explanation:
During the dissection study the body is kept in laying position so that the scientist can easily perform experiments. The body is kept in laying position not in upward position. The body in upward position will have gravitational effect on the fluids and the body layer will not melt.
Select the correct answer.
Maria is interested in community development programs. She is very concerned with the increasing industrialization in her community as it is
leading to high levels of air pollution. Which of these can Maria promote in her community to reduce pollution and global warming?
O A.
ban on the factories
OB.
plant more trees
OC.
burn all the waste
OD.
use aerosols and refrigerators with CFC
Why do viruses not fit easily into the broadest taxonomic category, life? (Choose all that apply)
1. They are not made of cells.
2. They have a capsid.
3. They do not reproduce on their own.
4. They do not respond to stimuli.
Answer:
viruses are not fit into broadest taxanomic system because:
they are not cells
they do not reproduce their own
they do not respond to stimuli.
Explanation:
viruses have capsid and are not cells. to be a cell they must have a cell membrane while viruses lack cell wall. they replicate by using the host machinary in which they are causing infection. they are acellular and obligate intracellular parasites of anials plants fungi and bacteria.
Answer:
they are not cells
they do not reproduce their own
they do not respond to stimuli
Explanation:
and i just took a test about this
what's "1 syllables & 2 syllables and 3 syllables meaning"
Answer:
Monosyllabic
Explanation:
Answer:
Hope it helped
Explanation:
1 syllable means monosyllabic
2 syllables means disyllabic
3 syllables means trisyllabic
PLS RATE AS BRAINLIEST ANSWER
Why does this matter? A mid-ocean ridge, which is formed
by hot mantle material rising up then
cooling down, is found along the plate
boundary between the South American
Plate and African Plate.
PLEASE ANSWER!! PLEASEE
Answer:
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth's tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.
Explanation:
Answer:
A mid-ocean ridge is a place where sea floor spreading occurs. They also form new rocks and mountains.
Explanation:
URGENT PLZ ANSWER
Which of the following observations provide evidence of evolutionary relatedness among organisms? Select all that may apply.
a) Similarities in molecular structures (DNA)
b) Similarities in the way they behave
c) Similarities in body structure
d) Similarities in the foods that organisms eat
e) Similarities in embryological development
The excited electron then loses its energy as it travels down the
The excited electron then loses its energy as it travels down the Then, at some point, these higher energy electrons give up their "extra" energy in the form of a photon of light and fall back down to their original energy level.
What happens to an electron when it loses energy?
The lines in an emission spectrum occur when the electron loses energy, and "falls back", from a higher energy state to a lower one emitting photons at different frequencies for different energy transitions.
How can an electron in an atom lose energy?For an isolated atom or molecule in a gas, excited states of electrons often don't have any easy way to lose energy except by electromagnetic radiation- the light of some frequency. A little of the energy can go into internal vibrations for a molecule.
Learn more about electrons then loses their energy at
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Why doesn't the North Pole have frost action?
Why do organisms develop symbiotic relationships with other species in their
environment? *
Answer:
Competition, Organisms of two species use the same limited resource and have a ... In interspecific competition, members of two different species use the same limited ... In mutualism, two species have a long-term interaction that is beneficial to both ... size of a species that the environment can sustain is its carrying capacity.
Explanation:
Answer:
Symbiotic relationships are important because they are a major driving force of evolution. This networking and cooperation among species allows them to survive better than they would as individuals
Explanation:
The pH scale ranges from ____________ to ____________ and is used to indicate the ____________ of a solution.
Answer:
Acidic, Basic, acidity
Explanation:
The PH scale ranges from acidic to basic and is used to indicate the acidity/alkalinity of a solution.
A normal PH scale ranges from the number 0 to 14. When the PH of a solution ranges from 0 to 7 is said to contains acidic contents in it. If the solution is greater than 7, it is said to be alkaline and when the solution is average(7) it is said to be neutral solution.
Example of an acidic substance/solution is lemon juice, solution that contain alkaline is bleach.
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g One benefit of operons in bacteria is that they a. do not need ligands and regulatory proteins as single genes would. b. do not need any modification of the proteins after they are expressed. c. allow for alterations in DNA sequence by flipping promoters around. d. allow for coordinated gene expression of related genes on one mRNA controlled by one promoter. e. allow the bacteria to use a wide variety of carbon sources.
Answer:
d. allow for coordinated gene expression of related genes on one mRNA controlled by one promoter.
Explanation:
An operon is a group of functionally-related genes that share the same promoter region and the same operator which interacts with specific repressors or activators, and they are transcribed as a unit. This transcriptional unit (operon) is present in prokaryotic organisms (i.e., bacteria and archaea) but absent in eukaryotes. In an operon, each structural gene is known as a cistron, and they are transcribed together as a polycistronic primary messenger RNA (mRNA).
What is an allele?
A.
a form of a gene
B.
a hairstyle
C.
a physical trait
Answer: Your answer would be A
Explanation:one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
Answer:
a form of a gene
Explanation:
the result of a laboratory experiment
Explanation:
A laboratory experiment is an experiment conducted under highly controlled conditions (not necessarily a laboratory), where accurate measurements are possible.
The researcher decides where the experiment will take place, at what time, with which participants, in what circumstances and using a standardized procedure.
Which of the following statements about the fossil record is correct?
A. The fossil record includes more organisms that were abundant, or lived for long periods on Earth, than it is with those that lived for short periods of time and then became extinct.
B. The fossil record is richer with organisms that are the same ones as currently common and living on Earth today.
C. A fossil of a rain forest snake would not be found in an area on Earth that is currently a desert.
D. The fossil record is richer with organisms that resemble organisms that are those alive today.
Answer:
I believe the answer would be A
Explanation:
You would have more fossils of animals that lived longer time ago than recent one bc they would be more older and more beneath the ground.And for animals to fossilize takes a long time so more older animals would be fossils
Answer:
The answer would be option A.
Explanation:
The process of fossilization is a time taking process which undergoes several stages from drying and freezing to mineralization and petrification. A fossil takes about 2.5 to 3.5 billion years to form. Both biotic and abiotic factors plays an important role in fossil formation therefore, animals that were abundant and buried frequently are more likely to fossilize than animals that lived for a short duration. Moreover, animals that are more abundant and lived for a longer period of time would be likely buried beneath the earth and would have more chances of reaching an ideal condition for fossil formation such as no decomposition which could only be achieved in an oxygen deficit environment as oxygen accelerates the process of decomposition.For more information:
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Explain some of the reasons why not everyone shows traditional lateralization
Answer:
The right side of the brain may have developed more than the left side.Both sides of the brain developed equally.Explanation:
Lateralization is the term used to designate the tendency that some functions of the organism are more developed on one side of the brain. Traditional lateralization, promotes that these functions are more developed on the left side of the brain, making the right side of our body more dominant. However, it may happen that these functions develop more on the right side of the brain, or develop on both sides and in an egalitarian form, causing some people to have lateralization different from the traditional.
In snapdragons, tallness (T) is dominant to dwarfness(t), while red color is due to gene (R) and white to its corresponding allele (r). The heterozygous condition results in pink (Rr) flower color. Describe the genotypes and phenotypes of the offspring in a cross between a heterozygous tall snapdragon with pink flowers and a dwarf snapdragon with white flowers. Check all that apply. *
Answer:
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