Answer:
This begins with the gradual breaking down of the food in the mouth, by grinding the food substances with the teeth this is mastication, and the secretion of saliva, which moisten the food, soften it so that the salivary amylase enzyme, carried out the mechanical digestion.
Swallowing is a wavelike muscular contraction which involve the contraction of the longitudinal and circular muscles of the oesophagus, which pushes the bolus down to the stomach.
The food pass Oropharynx. While the epiglottis prevents the bolus from entering the trachea.
This is followed by the rolling up of the tongue, the pushing the broken down food now chyme towards the back of the mouth, pressing it against the soft palate. At this stage a bolus is formed.From here it is pushed into the throat,where it is pushed down the oesophagus by peristalsis.
Explanation:
which structure is found in the cytoplasm of a prokaryotic cell but is not found in the cytoplasm of a eukaryotic cell
Answer: DNA
is found in the cytoplasm of a prokaryotic cell. Not found in the cytoplasm of a eukaryotic cell.
Which is an example of the way matter cycles through the bodies of living
things?
A. Salmon swimming in a river
B. Salmon eating shrimp
C. Shrimp swimming in the ocean
D. People watching salmon
SUBMIT
A scientist is tracking object orbiting the sun that is found between Mars and Jupiter which additional feature can be used to determine the object is an astroid
Answer:
The options are not given. Here are the options;
produces a coma
has an irregular shape
has a tail of ice and dust
produces a streak of light.
The answer is has an irregular shape.
Explanation:
Asteroid are small objects that are too small to be called planets that revolve round the sun. They are smaller in size. The mass of the asteroids is less than the size of the Earth's moon.
Asteroids are leftovers from the formation of our solar system about 4.6 billion years ago. Earlier, the formation of Jupiter prevented any planetary bodies from forming in the gap between Mars and Jupiter, which make the small objects that were present to collide with each other and fragment into the asteroids.
Asteriods produce irregular shape.
Answer:
the answer is has an irregular shape or b
Explanation:
what is evaporation
Answer:
Evaporation is the process of turning liquid to vapor form.
NASA’s Kepler mission found evidence of several potentially habitable exoplanets, raising the possibility that life may have evolved independently outside of our solar system. If NASA found a novel lifeform, we would expect it to use energy molecules based on similar principles as lifeforms on Earth. The organism would likely use molecules with _____________ bonds. It might use two separate molecules, one serving as a rapidly utilizable energy currency and another molecule serving as long-term energy storage.
a. high energy.
b. low energy.
c. hydrogen.
d. electrostatic
Answer:
c. hydrogen.
Explanation:
Earth is full of different substances. Hydrogen bonding is a partial inter molecular bonding between a lone pair and an electron rich donor. Some of the most important molecules here on earth are held by hydrogen bonding.
Hydrogen bonding is useful in inorganic and organic molecular combination.
hello there.
Explain that different sequences of amino acids give different shapes to protein molecules
Explanation:
The sequence of amino acids in the chain determines how the chain will fold up to make the protein, so different proteins have different three-dimensional shapes. ... This is because proteins form attachments and interact with many other molecules and structures inside organisms.
List 3 commercial uses of sponges
The Ceramic industry. It is used for finishing on the lathe machine. ...
Home decorating/painting. The sponge buffering is a colouring technique used in DIY on furniture and accessories and on large surfaces such as walls and ceilings. ...
Footwear Manufacturers.
Answer:
Some commercial uses of sponges are
Personal hygiene: The sponge has many natural properties. It retains water, does not drip and releases water only when slight pressure is applied. Many people prefer to purchase the natural sea sponge because of its characteristics for deep cleansing the face, its ecological properties and most of all does not give allergic reactions.
Decor : In private homes, in hotels and on yachts, it is very common to see displays of natural sponges as part of furnishing.
Painting: The sea sponge is used in the restoration of art, for dry cleaning of frescoes and paintings
Hope this helps!
-Quinn <3
Which fossil fuel should be available for the longest time if current usage continues?
The best experimental design:______
a. alters only one condition between the controls and the experimental condition
b. includes a large sample size for each condition
c. includes a control
Answer:
The correct answer is option d. "includes a large sample size and a control, and alters only one condition between the controls and the experimental condition".
Explanation:
The correct answer for this question is missing, which is option d. "includes a large sample size and a control, and alters only one condition between the controls and the experimental condition". The best experimental design includes all the options proposed: it includes a large sample size to ensure that the data is statistically relevant; a control to verify that the results are valid and are not obtained from other untested conditions; and it alters only one condition at the time to ensure the existence of the relation between condition and results.
Mutations can occur in different cell types, what are these two types called?
Answer:
Germ cell
Somatic cell
Explanation:
If a gene is altered in a germ cell, the mutation is termed a germinal mutation.
If a gene is altered in a somatic cell, the mutation is termed a somatic mutation.
While doing research on deep-sea vents, you discover a very simple new life form. After some initial analysis, you find that this life form contains small fragments of DNA, small complementary RNA fragments, and proteins. Fortuitously, you collected two strains, one that is purple and one that is yellow. You wish to discover which of those three molecules could be the genetic material. You heat-kill some of the purple life form and subject three different homogenized samples to different enzymes: DNase, RNase, or protease. Which treated sample(s) will transform yellow into purple IF RNA is the genetic material
Answer:
The one treated with DNase and protease
Explanation:
The samples that will transform yellow into purple if RNA is the genetic material are the ones treated with DNase and protease respectively.
The treatment of the heat-killed sample of the purple life with DNase will ensure that the DNA in the sample becomes degraded while treatment with protease will ensure that protein is degraded, leaving only the RNA. Thus, the RNA can be taken up by the yellow life form and become transformed into purple if indeed RNA is the genetic material.
The sample treated with RNase cannot transform the yellow life into purple because the RNase catalyzes the degradation of RNA into smaller components.
Which correctly lists the three processes that are affected by freeze and thaw cycles?
O creep, landslide, and deposition
O deposition, creep, and weathering
O landslide, slump and deposition
O slump. weathering, and creep
Answer:
Slump creep and weathering
Explanation:
Freeze-thaw weathering occurs when water from rainfall or melt snow penetrate into cracks and the temperature is lowered than a liquid and freeze. The process where exposed rock is broken. It gives the landscape a new shape.
When the freeze occur it expands the rock and when the temperature increases above freezing the thaw ice further penetrate into the crack.
Weathering the breaking down of rock into smaller frequent affects freeze-thaw as it allows water to penetrate into cracks.
Slump is the downward movement of materials from rock surface, it allows material to move alone the rock surface liquid such as water can be allowed to move and penetrate cracks. crack rock fragment that results from freeze thawing are deposited at rock base and form smaller rocks
Creep is also the movements of weathered materials down the slope of rock surfaces. It could result from freeze thaw.
Answer:
d
Explanation:
If a 160lb individual has 28% body fat how much of their body weight is fat in lbs.?
Answer:
44.8 lb
Explanation:
160 lb * 0.28= 44.8 lb
Answer:
44.8 lb
Explanation:
160 x 0.28 = 44.8
Which types of mutation are most damaging to an organism?
a) Substitution & Deletion
b) Deletion & Insertion
c) Insertion & Substitution
[tex]answer \\ = deletion \: and \: insertion \\ explanation \\ insertion \: and \: deletion \: results \: in \: a \: \\ frame \: shift \: that \: changes \: the \: \\ reading \: of \: subsequent \: codons \: and \: \\ therefore \: alters \: the \: entire \: amino \: \\ acid \: sequence \: that \: follows \: the \: \\ mutation ,insertion \: and \: deletions \: \\ are \: usually \: more \: harmful \: than \\ a \: substitution \: in \: which \: a \: single \\ amino \: acid \: is \: altered. \\ hope \: it \: helps[/tex]
A study from the National Institutes of Health states that the human body contains trillions of microorganisms that make up 1% to 3% of the body's mass. Use this information to estimate the average mass of a microorganism.
Answer:
If the mass of the human body is 60 kg so the average mass of microorganism is 1.2 kg.
Explanation:
If we suppose the mass of human body is 60 kg and we know the percentage that is 1 to 3% so we will take the average microorganism mass of which is 2%. So by doing multiplication of 60 with 2 and then divided by 100, we get 1.2 kg. The reason for dividing by 100 is that the average mass present in percentage form so for converting the percentage into standard form we have to divide it by 100. So we conclude that in every human with a mass of 60 kg have 1.2 kg microbes present in their body.
Diffusion is a passive process that accounts for the movement of respiratory gases across the capillary membranes of alveoli.
True
False
Answer:
True
Explanation:
Diffusion is a passive process (no energy required) in which the substance such as liquid and gases moves from an area of high concentration to an area of low concentration.
During respiration, carbon dioxide diffuses from the blood into the alveoli and oxygen diffuses from alveoli to blood across the respiratory membrane. The partial pressure of oxygen is low in the blood of the pulmonary capillaries and high in the alveoli. so diffusion allow movement of oxygen across the respiratory membrane from the alveoli into the blood.
Hence, the given statement is true.
time._______________
is the relative temperature of a region over
O C. rain pattern
O B. climate
O A. weather
O D. wind currents
Answer: choice B. Climate
Explanation:
Climate is the relative temperature of a region over time.
Select the correct answer.
Which type of energy is thermal energy a form of?
A.
chemical energy
B.
kinetic energy
C.
magnetic energy
D.
potential energy
Answer:
right answer is
B
Kinetic energy
13. Ranchers lobbied the government to eradicate wolves from Yellowstone National Park. Five years later the deer population had increased fivefold. The following winter 70% of the deer starved to death. Explain why this was bound to happen.
Answer: The overgrowth in deer population led to a food shortage.
Explanation:
Since the eradication of the wolves, the deer had no predator to keep their total population in check. Due to the vast amount of deer the food in the area was being eaten at a faster rate. Most of the deer died do to their environment not being capable of feeding that many deer.
(I hope this helps! I tried my best.)
Colocar la opción correcta.
a) La caña Colihue:
• Es un ejemplo de individuo y de organización Ecológica
• Es un ejemplo de organismo y pertenece a la organización Biológica
• Es un ejemplo de comunidad
• A y B son correctas
b) Las flores y los tallos:
• Son ejemplos de órganos
• Son ejemplos de organelas
• Son ejemplos de células
• Ninguna es correcta
c) El H20 es un ejemplo de:
• Atomo
• Molécula
• Organela
d) El nitrógeno es un ejemplo de:
• Molécula
• Atomo
• Partícula subatómica
e) El Bosque es un ejemplo de:
• Población
• Ecosistema
• Células vegetales
¡Ayuda, por favor!
Answer: A y B son correctas
Explanation:
If you have a concern about fluoride in your drinking water, how do you get more information?
Answer:
Contact the Centers for Disease Control and Prevention (CDC).
Explanation:
The table below compares three galaxies the information about galaxies is correct in
Answer:
A. Column 1
Explanation:
The information in column 1 is correct for all galaxy but information in coulmn 2 and Column 3 has some incorrect information about Elliptical galaxy.
Information about spiral galaxy is correct in all three columns that spiral galaxy has pinwheel shape and made up of several stars, dust and gas particles hold together by gravitational force.
Elliptical galaxy has round or oval shape and made up of mostly old stars and do not have much gas and dust particles which are hold together by gravitation force and not by electrical force.
Irregular galaxy has no defined shape as of spiral and elliptical and are made up of large amount of gas and dust and forms new stars which allow them to look brighter.
Hence, information in coulmn 1 is correct for all the galaxy.
Answer:
Column 1
Explanation:
Nucleic acids and carbohydrates are both types of what?
A. Macromolecules
B. Proteins
C. Elements
D. Atoms
SUBM
You are running an experiment to study seed germination and accidentally left a dish of seeds covered with a little water in a totally dark room. When you return a few days later, you notice that the seeds have sprouted long roots and long shoots. What was the source of most of the matter that makes up these roots and shoots?A. oxygen in the airB. carbon dioxide in the airC. water in the dishD. glucose in the seed
Answer:
D. glucose in the seed
Explanation:
Plants generally make their food through the process of photosynthesis in the presence of sunlight by utilizing carbon-dioxide and water and produces oxygen and carbohydrate.
But due to the absence of sunlight, plant will be unable to use carbon dioxide and water for photosynthesis and oxygen is a by-product.
So the reason of seed germination is the presence of glucose in the seed. Seeds generally germinate through the process of inhibition, that require uptake of water. Glucose works as energy source in humans and plants as well. sugar or glucose allow the seed to utilize the water and help foster its growth.
Hence, the correct option is D. glucose in the seed.
What happens during G2 phase?
Answer:
Gap 2 (G2): During the gap between DNA synthesis and mitosis, the cell will continue to grow and produce new proteins.
Answer provided by CELLS Alive
What do all organisms have ?
Answer:
All organisms are capable of reproduction and development
Answer:
Organs, If thats not correct than cells
Explanation:
Shortly after a stream dried up, you noticed a change in the field mouse population coat color variation. When the stream was flowing, there were two populations, one with darker coats and one with lighter coats. After the stream dried up, mice with darker coats were being born into the lighter coat population and vice versa.
a. True
b. False
Answer:
a. True
Explanation:
When the stream dried up darker coat mice were seen into the lighter coat population and vice versa because of the natural selection process.
Mice change their coat color by adapting the changes in the stream flow and evolve their coat either dark or light that provides camouflage so predators won’t see them and they are able to survive in the environment. Mice have the advantage of surviving long and they are able to pass their genes to the offspring.
Hence, the given statement is true.
Based on the objective you should feel comfortable calculating expected genotype frequencies when given observed allele frequencies. You should also be able to compare expected genotype frequencies from HWE to observed frequencies and determine if evolution is occurring. Here's a sample problem. You can do this without a calculator! Let's take the noob gene, a gene with two known alleles that determines feather color in the eastern lark. The two alleles, let's call them delta and gamma, can be sequenced. In fact, looking at a population in southern GA, you discover that 60% of the alleles in the population are the delta allele. So question 1, what is the percentage of the gamma allele in the population
Answer:
40% is the percentage of the gamma allele in the population.
Explanation:
Available data:
Two alleles, delta and gamma60% of the alleles in the southern GA population are the delta alleleWhat is the percentage of the gamma allele in the population?
According to Hardy-Weinberg, the allelic frequencies in a locus are represented as p and q, referring to the allelic dominant or recessive forms. The genotypic frequencies after one generation are p² (Homozygous dominant), 2pq (Heterozygous), q² (Homozygous recessive). Populations in H-W equilibrium will get the same allelic frequencies generation after generation. The sum of these allelic frequencies equals 1, this is p + q = 1.
In the same way, the sum of genotypic frequencies equals 1, this is
p² + 2pq + q² = 1
Being
p the dominant allelic frequency, q the recessive allelic frequency, p² the homozygous dominant genotypic frequency q² the homozygous recessive genotypic frequency 2pq the heterozygous genotypic frequencyIf the percentage of delta allele in a population is 60%, this means that its frequency is 0.6. By clearing the equation p + q = 1, we can calculate the gamma allele frequency. This is:
p + q = 1
0.6 + q = 1
q = 1 - 0.6
q = 0.4
Then the percentage of gamma allele in the population is 40%.
We can also think about it like this:
If the sum of the allelic frequencies equals 1, then 1 is 100% of the allelic frequencies. And if the percentage of delta allele in a population is 60%, then 40% is the percentage of gamma allele.
Colonial protists have been hypothesized to be the precursors to multicellular organisms. This hypothesis suggests that the individual unicellular members of the colony, which are initially identical, can begin to take on different functions. Then. the colony can begin to evolve into a multicellular organism. True or False
Answer:
True.
Explanation:
Protists are group of eukaryotes that are unicellular or microscopic and some times multicellular. They can live in colonies and live individually.
Some protist live in large groups called colony.
Colonial protists form larger groups of multicellular organisms. The individuals work together as large groups and perform functions to benefit each other.
most of the colonial protist are filter feeders that feed on suspended particles. Colonies enhance feeding efficiency. In choanoflagellates, coloniest has led to the evolution of metazoans
Are zoos beneficial to animals
Note:This is a Debate
Answer:
I think they are not beneficial to animals
Explanation:
because
1.they are not free to live for themselves , find mates and have children
2.they are there so as the people can get money
Answer:
Proposition:
Zoos are beneficial for animals because :
- Keeps them away from poachers
- Medical care is provided
- protects them from predators
Opposition:
- in captivation most animals get depressed
- for doing tricks they are left starving
- they are kidnapped from the jungles away from the parents
(THE POINTS DEPEND ON THE TYPE OF DEBATE (THW;THBT;THR;THS))
(I have given it in general)
HOPE IT HELPS :)
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