Answer:
Photosynthesis is a plant that uses sunlight, water, and carbon dioxide to make sugar and oxygen.
name the nucleus of the thalamus for conscious sensation
Explanation:
Relaying limbic sensory and motor signals to the cerebral cortex, Regulating consciousness,sleep, alertnessB. What are two reasons that this layer can contain so much water vapor? (2 points)
The two reasons that this layer ( Troposphere ) will contain much water vapor are :
AltitudeAir compressibility The layer of the atmosphere with the most water vaporThe troposphere contains so much of the water vapor present in the atmosphere due to gravity and the compressibility air. As we move higher above the earth surface, the density of the atmosphere decreases rapidly. causing the majority of water vapor to be retained at the troposphere. which is lowest part of the atmosphere closest to the earth surface.
Hence we can conclude that The two reasons that this layer ( Troposphere ) will contain much water vapor are : Altitude and Air compressibility.
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Where in a plant would you find a fruit?
50 POINTS! Learnings and realizations about Removing Stains
What are your realizations in removing stains?
Explanation:
Stain removal is the process of removing a mark or spot left by one substance on a specific surface like a fabric. A solvent or detergent is generally used to conduct stain removal and many of these are available over the counter
5. Do some research to answer these questions: Who invented the metal detector? Why? What are its limitations?
It is necessary to have limitations in an environment because if not:
Traits from species would get crossed.
Water and shelter would be automatically created by extra species that are new.
The populations of the world would soon crowd one another out and make conditions unlivable.
The world would balance itself out without problems.
animals.
Plants would take over the space of animals
Best guess is "The populations of the world would soon crowd one another out and make conditions unlivable."
Explain the levels of organization beyond our planet.
Answer:
there is not much the land and earth could be better-tooken care of
Explanation:
state how glucagon and insulin reaches the pancreas?
Answer:
They are released from the beta cells in your pancreas in response to rising glucose in your bloodstream.
After you eat a meal, any carbohydrate you've eaten are broken down into glucose and are passed into the bloodstream. The pancreas detects he rise in the blood glucose and stays to secrete insulin.
Tay-Sachs disease is an inherited disease that is caused by a recessive allele. If a man and his wife, who are both carriers, have three children, what is the probability of each of the following? Show your calculations and give your answers as fractions.
a) All their three children do not have the disease.
d) At least one child is phenotypically normal without the disease.
b) One or more of their three children have Tay-Sachs disease.
c) All three children have the Tay-Sachs disease.
b) One or more of their three children have Tay-Sachs disease.
37/64
a) All their three children do not have the disease.
27/64
(3/4)^3
c) All three children have the Tay-Sachs disease.
1/64
(1/4)^3
d) At least one child is phenotypically normal without the disease.
63/64
quizlet
A famous case study in the united states describes how a very polluted lake was able to be remediated and is now used for recreation by many people which lake was this?
A: Lake lanier in Georgia
B: Lake Washington in Washington
C: Lake Tahoe in Devada
D: Lake Apopka in Florida
Lake Tahoe in Devada suffered from a severe eutrophication damage until control and remediation activities were carried out. Option C is correct.
What is eutrophication?
The term eutrophication refers to the biological process produced in water by an oversupply of nutrients or organic matter.
Human pollutive activities are closely related to this artifical eutrophication and, in several cases, are the cause.
Nutrients, mainly compounded with nitrogen or phosphorous, favor phytoplankton multiplication, especially cyanobacteria. Primary productivity enhances due to the sharp increase in these microscopic organisms.
The overgrowth impedes light reach deeper areas, affecting the biota living there. Sedimentation is caused by the death of plants and algae that sink to the bottom. These sediments rich in organic matter suffer decomposition in the presence of oxygen.
When oxygen disappears, anaerobic bacteria act and produce fermentation.
Both processes, phytoplankton overgrowth on the surface and fermentation on the bottom, originate toxic compounds that damage the animals.
Animals die, creating more sediments in the bottom where there are anaerobic conditions.
Decomposition and fermentation processes increase, producing a bad smell.
This whole cycle continues as long as cyanobacteria are present.
Among the main human activities responsible for eutrophication we can mention tourism, agriculture and the cattle industry, and the lack of controlled organic waste treatment.
This what occurred in the Lake Tahoe, in Devada, after the impact caused by tourism, deforestation, and the cattle industry.
This lake suffered from a severe eutrophication damage until control and remediation activities were carried out.
The correct option is C. Lake Tahoe in Devada.
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The threshold level for a
neuron to fire is a 10. What will happen if the stimulus to the neuron is 8?
Answer:
The neuron will not fire at all
Explanation:
Jake set up an experiment. He set two aquariums with five fish of the same type and size. Aquarium one was very small, only one cubic foot. Aquarium 2 was very large at 10 cubic feet. Each day the fish were fed the same amount of food and vitamins, at the end of 5 months Jake measured the fish by length. His results are shown in the bar graph above. What might be the question Jake is asking in his experiment?
A. What fish food cost the most?
B. What fish food makes fish grow faster?
C. Does aquarium size affect growth rate of fish?
D. What type of fish food do fish like the best?
Once identified the controlled, the independent, and the dependent variables, we can say the question is C. Does aquarium size affect the growth rate of fish?
What is the independent variable?
Refers to all the variables in an experiment that provoke a response in another variable.
An independent variable is the one that changes or is controlled and modified in the experiment to analyze how another variable responds to it.
It changes to analyze its effects on the dependent variable.
What is the dependent variable?Refers to the variable whose response depends on any change in the independent variable. Depending on how the independent variable is modified, the dependent variable changes.
What is the controlled variable?During an experiment, the controlled variables are kept constant. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.
In the exposed example,
the independent variable ⇒ Aquarium size ⇒ 1 cubic foot and 10 cubic feetthe controlled variable ⇒ food and vitaminsthe dependent variable ⇒ fishes growth.The question that Jake is asking in his experiment is Does aquarium size affect growth rate of fish? Option C.
Since he only needs to know how the size of the aquarium affects the animal's growth, he needs to keep constant other influencing variables such as food and vitamins. Otherwise, these other variables might also influence the results.
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Why is the cell theory a theory and not a law? (100 points)
The cell theory has not been tested enough by the scientific community.
The cell theory explains the natural world.
The cell theory describes the natural world.
The cell theory has not been accepted by the scientific community.
Answer:
Cell theory is a theory not a law because the cell theory does not have enough support to become a law. Cell theory is referred to as the history of scientific theory. All cells come from pre-existing cells and that is the basic unit reproduction and a basic unit of all organisms.
Explanation:
Hope it help you
Answer:
Option D
Explanation:
Most probable answer is D as Cell theory wasn't 100% correct .It required some corrections.So it hasn't proved itself enough to become a law of biological departmentAre shoebills tertiary consumers?
Answer:
Yes, they are!
Explanation:
While inhabiting marshy areas, the Balaeniceps rex is found to be both a secondary and tertiary consumer preying on fish ranging in size from that of Large Mouth Bass to the small Pacific Herring, and other aquatic organisms such as frogs similar to the Red Eyed Tree Frog
How can two organisms have the same phenotype but different genotypes?
A. One organism is heterozygous, and the other organism is hybrid.
B. One organism is homzygous dominant, and the other organism is heterozygous.
C. One organism is homzygous dominant, and the other organism is homzygous recessive.
D. One organism is heterozygous, and the other organism is homzygous recessive.
Two organisms have the same phenotype but different genotypes when One organism is purebred dominant, and the other organism is heterozygous. So, the correct option is B.
What do you mean by Genotype?Genotype may be defined as the ultimate combination of those alleles which are selected for specific studies.
When an allele is dominant over others, its purebred dominant and heterozygous (hybrid) may have different genotypes but the same phenotype.
Therefore, the correct option for this question is B.
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Is the virus considered a living creature? Justify the answer.
Answer:
Viruses are not living things.
Answer: No.
Explanation:
Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply.
A zygote is best described as _____.
A. a complete set of chromosomes
B. a sperm rejected by a hardened egg
C. the first diploid cell after fertilization
D. an egg just before fertilization
How could you tell whether a given sequence was DNA or mRNA?
Was it easier to decode messages written in DNA or in mRNA sequences?
Which cellular enzymes or machines are you imitating when you "transcribe" DNA into mRNA?
Which cellular enzymes or machines are you imitating when you "translate" mRNA into a chain of amino acids?
What else needs to happen in a eukaryotic cell between the processes of transcription and translation?
In step 5, how did different mutations affect the amino acid sequence that was encoded?
Explain why some single nucleotide mutations affect an amino acid sequence and some single nucleotide mutations do not.
Explain why nucleotide insertions and deletions affect the amino acid sequence so profoundly.
Why could your secret message include only 20 of the 26 letters of the alphabet?
Did you find that it was difficult to work with only these letters?
Answer:
1. You could tell whether a given sequence was DNA or mRNA because of Uracil and Thymine base differences in both
2. Answers may vary up to you, but messages are easier to decode written in DNA
3. You are imitating RNA polymerases.
4. You are imitating RNA polymerase once again
5. The RNA strand is delivered to start the process of translation; RNA>>Protien
6. Different mutations affect different amino acid sequences because they alter the code which makes it un-easy to decode the sequence
7. Some single nucleotide mutations affect an amino acid sequence depending on what mutation it is causing. Some single nucleotide mutations do not do this because they aren't as severe and they don't cause codons to mix up.
Answer:
1
ADNA sequences use the nucleotides A, T, G, and C, while mRNA sequences use the nucleotides A, U, G, and C.
B It was easier to decode the messages written in mRNA sequences because these sequences could be translated directly into the amino acid sequence.
2
A The cellular enzyme that carries out transcription is RNA polymerase.
B The cellular machine that carries out translation is the ribosome, which is composed of both rRNA and ribosomal proteins.
C In a eukaryotic cell, an mRNA transcript often has additional untranslated regions and a poly-A tail. A eukaryotic mRNA transcript would need to be transported from the nucleus to the cytoplasm before it could be translated.
3
A Some amino acids are encoded by several codons. If a single nucleotide mutation still encodes for the same amino acid, the resulting amino acid sequence would not be affected. This happens most often with nucleotides in the third position of a codon.
B If a single nucleotide mutation changes the amino acid encoded, the resulting amino acid sequence would be affected. This happens most often with nucleotides in the first and second positions of a codon.
C Nucleotide insertions and deletions cause frameshift mutations, which change the reading frame of translation and will encode completely different amino acids from that point forward.
4
A There are only 20 canonical amino acids, so the letters B, J, O, U, X, and Z are not used as one-letter codes.
B It was a little difficult to not use the letters B, J, O, U, X, and Z at first, but there are messages to write without these six letters.
Explanation:
Is it B or D
Barbie sits on one end of a see-saw and Ken sits on the other. Barbie goes up in the air and Ken stays down on the ground. In order for Ken to make Barbie move down, he should
A)stand on the board.
B)push down on the board.
C)move towards the center.
D)move away from the center.
5. When people say "eat low on the food chain," what type of food are
they recommended
Ways in which the responses of mammals differ from flowering plants
PLEASE ANSWER 60 POINTS
Which is an example of genetic drift?
A. Artificial selection creates vegetables resistant to insects.
B. Allele frequencies change randomly each generation.
C. Females choose mates, resulting in large males.
D. Polygenic traits change due to directional selection.
Answer:
Allele frequencies change randomly each generation is the example of genetic drift.
why is it an advantage to move food around your mouth before you swallow it?
Answer:
Because it makes the food more tasty and it's easier to break down the food particles
Explanation:
there's the 5 taste sensory in each part of your tongue and each part of it specializes in a taste, the front of your tongue specializes in sweetness, the middle part of your tongue specializes in saltiness, the upper part of your tongue specializes in sourness and the back part specializes in bitterness.
It also breaks larger particles into smaller particles to reduce the stress of your esophagus.
Some argue that hydroelectric power should be used to generate more energy
for the United States. Which argument could be used to dispute this idea?
O A. It can only be used in areas with specific kinds of rivers.
O B. It releases more greenhouse gases than most sources.
O C. It uses too many nonrenewable resources.
D. It releases toxic chemicals into the atmosphere.
The use of hydroelectric power in the United States is limited because it can only be used in areas with specific kinds of rivers.
What is hydroelectric power?Hydroelectric power is electric power which is generated from water.
The kinetic energy of motion of water is converted to electrical energy when the turbines of a dynamo are turned by the moving water.
Hydroelectric power has limited application because it requires the area to have large water bodies.
Therefore, the use of hydroelectric power in the United States is limited because it can only be used in areas with specific kinds of rivers.
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Explain what distruptive selection is
Answer:
"Disruptive selection is a type of natural selection that selects against the average individual in a population. The makeup of this type of population would show phenotypes (individuals with groups of traits) of both extremes but have very few individuals in the middle"
Explanation:
no spams! only answer if u 100% know!
Answer:
Archaea
Explanation:
They live in harsh environments!
Hope this helps! ;-)
“*•Pls help me!!!•*”
Answer:
Cold weather
Explanation:
Drought, large numbers of plants, and heavy wind are all factors which would cause the further spreading of wildfiresWildfires generally take place in hot, humid, and dry weatherHence, cold weather decreases the magnitude of the wildfireOption 3Answer:
Cold weather
Explanation:
I second the other person, thank you! Have a blessed day <3
Brain is most active during which portion of sleep cycle
The Brain is most active during REM sleep portion of sleep cycle. This portion of sleep cycle usually occurs for two hours, and when monitored, it is discovered that brain activity is mostly dynamic at this stage.
What is REM sleep?REM stands for Rapid Eye Movement and this is a stage in the sleep cycle of mammals and birds characterized by random rapid movement of the eyes.
Basically, sleep is divided into four major stages which include
AwakeLightDeepREM sleepThe first three stages of sleep are regarded as Non-Rapid Eye movement (NREM) stages. The first three stages comprises of about 75% of the total sleep time.
This movement of the eyes is followed by minimal muscle tone throughout the body, and the higher probability of the sleeper to dream vividly.
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What type of vibration is created by S waves?
A. Propagation
B. Tension
C. Compression
D. Shearing
Write in complete sentences.
What is a food web?
Answer:
A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem.
Explanation:
