Answer:
Contact inhibition.
Explanation:
Contact inhibition is a response of a cell in which cell growth stopped when it touches or comes in contact with another cell. When the normal and healthy cells grows and touching other cells, the cell receives a red light signal to stop its growth so the cell stop its growth while on the other hand, if there is no contact with other cell the cell continues its growth.
why is the bluefin tuna considered an endangered species?
Answer:
It's because they get eaten
describe the water cycle process starting from an afternoon thunderstorm.
Answer:
Most thunderstorms form by a cycle that has three stages: the cumulus stage, mature stage, and dissipating stage.
Cumulus Stage
The sun heats the Earth's surface during the day. The heat on the surface and warms the air around it. Since warm air is lighter than cool air, it starts to rise (known as an updraft). If the air is moist, then the warm air condenses into a cumulus cloud. The cloud will continue to grow as long as warm air below it continues to rise.
Mature Stage
When the cumulus cloud becomes very large, the water in it becomes large and heavy. Raindrops start to fall through the cloud when the rising air can no longer hold them up. Meanwhile, cool dry air starts to enter the cloud. Because cool air is heavier than warm air, it starts to descend in the cloud (known as a downdraft). The downdraft pulls the heavy water downward, making rain.
This cloud has become a cumulonimbus cloud because it has an updraft, a downdraft, and rain. Thunder and lightning start to occur, as well as heavy rain. The cumulonimbus is now a thunderstorm cell.
Dissipating Stage
After about 30 minutes, the thunderstorm begins to dissipate. This occurs when the downdrafts in the cloud begins to dominate over the updraft. Since warm moist air can no longer rise, cloud droplets can no longer form. The storm dies out with light rain as the cloud disappears from bottom to top.
The whole process takes about one hour for an ordinary thunderstorm. Supercell thunderstorms are much larger, more powerful, and last for several hours.
hope this helps!!!:)
Explanation:
Which of these is what DNA and RNA are? *
O A. lipids
O B. proteins
O C. nucleic acids
O D. carbohydrates
Answer: DNA and RNA are both examples of nucleic acids
They consist of a strand of nucleotides with a phosphate group, a 5′ sugar and a nitrogenous base.
Extra info: DNA and RNA molecules are polymers. DNA is double stranded, whereas RNA is single stranded.
The nucleotides of DNA can pair together by base pairing, creating a strand that is complementary to its pair
Various types of RNA exist which have roles in protein synthesis as well as regulation of cellular programmes by fine-tuning gene expression.
Petrified Trees are an example of what kind of fossil?
A. Carbonized
B. Preserved
C. Per-mineralized
D. Rock
Answer:
C- Per-mineralized
Explanation:
Hope this helped good luck studying, have a good day/night! <3
please help ill mark brainiest istgg
Answer:
B because they are mutated and they are dividing faster than group A
Explanation:
a population of 100 insects that live in an area 100 square meters has a density of 1 insect per square meter. what’s this an example of?
1. When a consumer eats a producer, 10 percent of the producer's energy is passed on to the consumer trophic level. What happens to the other 90 percent?
A. It is added back to the soil by decomposers.
B. It is used by the producer to pass on to the next trophic level.
C. It is used for cell processes or released as heat.
D. It is consumed and used by the consumer.
2. Why is there less biomass at the top of the energy pyramid?
A. Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.
B. Secondary and tertiary consumers live longer, so there are fewer of them because they reproduce more slowly.
C. Secondary and tertiary consumers are larger, so there are fewer of them.
D. Secondary and tertiary consumers have bigger ranges, so there are fewer of them because they each need a lot of space.
3. Using the ten percent rule, determine how many kilocalories of energy the tertiary consumer tuna will receive.
Algae: 135,000 Kcal
Shrimp: _
Lantern Fish: _
Tuna: _
A. 135 Kcal
B. 1,350 Kcal
C. 135,000 Kcal
D. 13,500 Kcal
4. Read the following statements about various species of plants and animals. Which one would be classified as an invasive species?
A. Kudzu, a plant from Japan, was introduced as a foliage crop and to reduce soil erosion. It grows up to a foot per day, smothering low-growing plants and killing trees.
B. Dandelions are plants from Eurasia. They are often considered weeds by homeowners and killed off by using herbicide. They can be consumed in salads or as tea and are the first food resource for bees in the spring.
C. Honey bees are from Europe and can sting people. They are often farmed in America for their ability to pollinate and provide honey.
D. Loosestrife beetles, native to Eurasia, have been released in various American states to combat the invasive plant, purple loosestrife.
5. Using the following formula to find the efficiency of energy transfer between the harbor seal (2,500 Kcal) and a polar bear (375 Kcal)
(Energy level transferred to next level) / (Total energy input) × 100
A. 15%
B. 20%
C. 10%
D. 12%
Thank you so much if you answer this:) I'm working on it and will probably figure them out but a little help would be appreciated. <3
Answer: I just to happen to be working on this quiz right now. I got 5/5 on it, so I hope this helps :D
~Ten Percent Rule Quick Check~
1. B) It is used for cell processes...
2. D) Secondary and tertiary consumers have to consume a lot more..
3. D) 135 Kcal
4. C) Kudzu, a plant from Japan...
5. A) 15%
^This is confirmed valid as of January 17th, 2022^
Consumers are the organisms that depend on others for food and energy for the metabolic process while the producers produce their food at the trophic levels.
The correct options are 1. C, 2. A, 3. A, 4. A and 5. A.
The trophic levels can be explained as:1. In the trophic levels the energy gets decreased as it passes from one level to another because it is used in the cellular process it is released in the form of heat.
2. Secondary and tertiary consumers have to feed a lot and hence, they are fewer in number compared to the producers. They maintain the population and balance out the producer and consumer ratio.
3. According to the 10 % rule of energy transfer, the Tuna will receive 135 Kcal of energy because the energy decrease by 10% as one moves from the lower trophic to the upper levels.
4. The species that are non-native to a place or region are called invasive species hence, the Kudzu plant is the invasive species as it is introduced from Japan.
5. Given,
Energy of Seal = 2,500 Kcal
The energy of polar bear = 375 Kcal
The 10% of 2500 will be 250 and the 5 % 125 thus, 15% is the efficiency.
Therefore, the correct options are 1. C, 2. A, 3. A, 4. A and 5. A.
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What would happen to a cell if placed in each of the following solutions:
a. Isotonic solution:
b. Hypotonic solution:
c. Hypertonic solution:
Answer:
Isotonic: there would be no net flow of water, the cell will stay stable
Hypotonic: the cell will fill up with water and burst
Hypertonic: The cell will shrink because it loses water
Explanation:
1. the process some organisms are able to use by which they convert light energy to chemical energy 2. the main method photosynthesizing organisms use for carbon dioxide fixation Photosynthesis 3. a set of chemical reactions that break down pyruvate, producing electron carriers for an electron transport chain that powers ATP production 4. the process cells use to produce energy from carbohydrates 5. a substance that absorbs some wavelengths of light and reflects others, giving something its color 6. the green substance that absorbs light and provides energy for photosynthesis 7. disc-shaped sacs in chloroplasts in which photosynthesis takes place 8. the series of molecules in the inner membranes of chloroplasts and mitochondria down which excited electrons pass, releasing energy for ATP production 9. process by which NAD is recycled under anaerobic conditions in order to continue the break down of carbohydrates to supply energy for producing ATP 10. adenosine triphosphate, a substance that stores and releases energy for most cell processes 11. describes a process that requires oxygen
Considering the given descriptions of metabolic reactions, the correct terms described are:
1. photosynthesis.
2. photosynthesis
3. citric acid cycle.
4. respiration.
5. pigments.
6. chlorophyll.
7. thylakoids.
8. electron transport chain.
9. fermentation.
10. Adenosine triphosphate
11. Aerobic reactions
What is photosynthesis?Photosynthesis is one of the many chemical reactions that occur in living organisms.
Photosynthesis is the process by which living organisms known as plants use the energy of sunlight to convert carbon dioxide and water into chemical energy stored in foods.
These chemical reactions are known as metabolic reactions and are essential for the growth and development of the living organism.
Considering the given descriptions of metabolic reactions:
Photosynthesis is the process some organisms are able to use by which they convert light energy to chemical energy. It is the main method by which photosynthesizing organisms use for carbon dioxide fixation to produce food nutrients.
The green pigment that absorbs light and provides energy for photosynthesis is chlorophyll.
Pigments are substances that absorb some wavelengths of light and reflect others, giving something its color.
Chlorophyll is found within chloroplasts. Thylakoids are disc-shaped sacs in chloroplasts where photosynthesis takes place.
Through the process of respiration, cells produce energy from carbohydrates. In living organisms such as man, the citric acid cycle is a set of chemical reactions that break down pyruvate, producing electron carriers for an electron transport chain that powers ATP production.
Adenosine triphosphate, ATP, is a substance that stores and releases energy for most cell processes.
The electron transport chain refers to a series of molecules in the inner membranes of chloroplasts and mitochondria down which excited electrons pass, releasing energy for ATP production.
ATP production can occur under aerobic or anaerobic conditions.
Aerobic reactions are processes that require oxygen while anaerobic reactions do not require oxygen.
The process by which NAD is recycled under anaerobic conditions in order to continue the breakdown of carbohydrates to supply energy for producing ATP is called fermentation.
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Which process is not caused by the movement of Earth's plates?
A ocean island formation
B chemical weathering
C mountain building
D volcanic eruption
Plants receive carbon dioxide through their ____________.
Answer:
leaves,stomata
Explanation:
The carbon dioxide enters the leaves of the plant through the stomata present on their surface.
Answer:
Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots.
Explanation:
Which of the following does not have an effect on enzyme activity?
Temperature
Amount of oxygen
Number of substrates
Shape of active site
Enzyme activity is based on various factors. Some of these factors are temperature, number of substrates and shape of active site.
What is enzyme activity?Enzyme is a molecule or a chemical that alters the rate of reaction. It can either increase or decrease the reaction rate.
The part of enzyme which binds to the substrate is called active site.
There are many factors that affect the enzyme activity, these are:
Temperature. pH.concentration.Number of the substrate.Shape of the active site.Thus the correct option is b.
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what is photosynthesis
Photosynthesis is the process used by plants, algae and certain bacteria to harness energy from sunlight and turn it into chemical energy. Here, we describe the general principles of photosynthesis and highlight how scientists are studying this natural process to help develop clean fuels and sources of renewable energy.
Types of photosynthesis:There are two types of photosynthetic processes: oxygenic photosynthesis and anoxygenic photosynthesis. The general principles of anoxygenic and oxygenic photosynthesis are very similar, but oxygenic photosynthesis is the most common and is seen in plants, algae and cyanobacteria.
During oxygenic photosynthesis, light energy transfers electrons from water (H2O) to carbon dioxide (CO2), to produce carbohydrates. In this transfer, the CO2 is "reduced," or receives electrons, and the water becomes "oxidized," or loses electrons. Ultimately, oxygen is produced along with carbohydrates.
Explanation:
photosynthesis the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
6 How can you determine the origin of the oxygen released by photosynthesis?
Answer:
because all green plants release oxygen and non- green plants do not release oxygen.
Explanation: One of the first uses of an isotopic tracer in biology was in the determination of the source of the oxygen produced by photosynthesis. Using a heavy isotope of oxygen, 18O, to label one of the two reactants in the photosynthetic process, Samuel Ruben and collegues at UC Berkeley were able to determine that the oxygen gas came not from carbon dioxide, but water.
what type of scientist was Alfred Wegener?
Answer:
Meteorologist
Explanation:
Wegener was a meteorologist in the late 1800s to early 1900s
In pea plants, tall (T) is dominant to short (t). A plant with genotype Tt is crossed with a plant with type tt. What percentage of their offspring will be tall?
Answer:
50%
Explanation:
Draw a Punnet square to determine the percentage of offspring that are tall.
The green and blue highlighted columns and rows represents the genotype of the parents. To fill in the genotype of the offspring, write down the letter (T/t) of the parent allele from that row and column the offspring belongs to. By convention, the T is written before t. (The genotype of a tall offspring is written as Tt not tT)
Since the T allele is dominant, as long as the offspring has one T, the offspring is tall. The t allele is recessive, thus two ts (tt) is needed for the short trait to be expressed.
From the Punnet square, the result is 2 offsprings that are tall and 2 offsprings that are short.
Required percentage
[tex] = \frac{2}{4} \times 100\% \\ = \frac{1}{2} \times 100\% \\ = 50\%[/tex]
what are the helpful measures to conserve human energy??
Answer:
Adjust your day-to-day behaviors
Energy conservation can be as simple as turning off lights or appliances when you do not need them. You can also use energy-intensive appliances less by performing household tasks manually, such as hang-drying your clothes instead of putting them in the dryer, or washing dishes by hand.
The conditions for an enzyme to work need to be?
What conditions make for a violent volcanic eruption?
OA. Magma with low gas content
OB. Magma with low viscosity
OC. Magma with high silica content
OD. Magma that can flow easily
Answer: B
Explanation:
Magma with low viscosity
Magma that has high content of silica will lead to a violent volcanic eruption. Thus, the correct answer is option C.
What kind of magma results in violent volcanic eruption?Magma that has a high content of silica will have high viscosity. This is due to the bond formation between silicon and oxygen, forming a Si-O tetrahedron.
These tetrahedra combine with each other and result in polymerization which increases the resistance of the liquid to flow. This type of thick magma does not flow easily and will result in an explosive eruption.
High amount of silica causes a lot of gas to be trapped in the volcano. High-viscosity magma does not allow for the exsolution of gas bubbles.
Thus, the gas bubbles will be trapped inside and increase pressure on the magma column to explode. The trapped gas thus provides the driving force for the explosion.
Thus, the correct answer is option C.
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Plz help!!!!
Kinda in a hurry to catch up on biology rn anything can help!!!
Answer:
16. Control group: Subject A
17. Independent (manipulated) variable: Type of powder
18. Dependent variable: Itching time
19. Explain whether the data supports the advertisement´s claims about its product. Yes, it does.
Explanation:
Control group: The control group is used to identify if there are any other factors influencing the results obtained by the treatment in the study (in this case, the new product), from the results that might be a consequence of other factors. The control group must be selected from the same population as the treatment group. Data from an experimental group are compared with the data from a control group. These two groups are identical in all aspects except for the independent variable that the researcher changes in the experimental group to observe how they affect the individuals.The experimental group is the one that receives the experimental procedure, with changes in the independent variable. There can be several experimental groups. In this case, the experimental group is subject B.
Independent (manipulated) 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. Usually, the independent variable is represented by the X letter. In the exposed example, the type of powder is the independent variable. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. In the exposed example, inching time is the dependent variable, that depends on the type of powder used. The data does support the advertisement´s claims about its product. The effect of the new product lasts 50% more than the original product. The old powder produced itching for 30 minutes, while the new product produced itching for 45min (15 more minutes, 50% more).Weak hydrogen bonds between the nitrogenous base pairs hold the two strands of DNA together. Why are the strands held together by weak hydrogen bonds instead of covalent bonds
Answer:
Explanation:
Hydrogen bonding is usually occur wen interaction with hydrogen atoms occur.
Hydrogen bonds joins DNA polymers because an hydrogen atom occur on on one base which is called hydrogen bond donors and another oxygen or nitrogen atoms on the base across from it which is called hydrogen bond acceptors.
Adenine “A” a purine and Thymine “T” a pyrimidine each have a donor and one acceptor, whereas Cytosine “C” a pyrimidine has one donor and two acceptors, and Guanine “G” a purine has one acceptor and two donors.
This atoms allows for hydrogen bond between them that gives them structure of DNA molecule.
A nucleotides is hydrogen bonded to T nucleotides while C nucleotides is hydrogen bonded to G nucleotide this is called complementary base pairing.
In an experiment, there are two groups. Which group is not changed in any way?
Answer:
the control
Explanation:
In the mainlands of Southeast Asia
what crop does the climate help to
foster?
A. cantaloupe
B. wheat
C. rice
Answer:
the answer is A. cantaloupe
Explanation:
Which researcher theorized that hypnosis comes about as a form of roleplay between hypnotist and subject?
A. Ernest Hilgard
B. Theodore Sarbin
C. Theodore Barber
D. Milton Erickson
Please select the best answer from the choices provided
А
B
Ο Ο Ο Ο
С
D
Save and Exit
Next
Submit
Mark this and return
Answer:
D. Milton Erickson
Explanation:
Just took the test! Please mark me the Brainliest! peace and love
Milton Erickson is the researcher who theorized the hypnosis that comes out form the roleplay of the hypnotist and subject.
He has dedicated his life to the field of hypnotism and is committed to scientific methodology.
He was one to specialize in hypnosis and family therapy.He is noted for his approaches in the uncoinsuous mind.Hence the option D is correct.Learn more about the that hypnosis comes about as a form.
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The verb concentrate means "gather" or "collect." The suffix -ion, used to form nouns, means "state" or "condition." Use this information to define the noun concentration.
Answer:
The state of gathering together.
Explanation:
Concentration is a noun and it refer to the act of gatthering closely or the state of gathering together or condition of collecting things or substances together.
In biochemistry it can mean the measure of the ratio of mass to volume in a solute and ratio of mass to volume of a solvent in a solution.
Which trait is controlled by three or more genes?
A:seed color in pea plants
B:feather color in roosters
C:fur color in palomino horses
D:hair color in humans
Answer: D:Hair color in humans
Explanation:
Condensation: the ______ off of ______ in the air in the ______
What type of muscle has a primary purpose of animal movement?
A) cardiac muscle
B) smooth muscle
C) tendons
D) skeletal muscle
Answer:
B. Smooth Muscle
Explanation:
Medusae are among the simplest animals that use muscles to make rhythmic movements. In at least some medusae, the circular muscles, which do most of the work of swimming, are striated. In contrast, most of the other muscles of cnidarians are smooth.
Answer:
D) skeletal muscle
Explanation:
skeletal muscle cells join together to form fascicles, and fascicles form the skeletal muscle.
34. What had to form before cells could form?
(1 Point)
sulfur molecules
organic compounds
plants
oxygen gas
Answer:
B. organic compounds I think if it's wrong then it might be A. sulfur molecules
Organic compounds, fc a cell couldn't form until organic molecules united with one another to form more complex molecules.
what is the name for the underground layer of permeable rock that contains water
Answer:
aquifer
Explanation:
Answer:
a tunnel or a sewer
Explanation: