Answer:
the 2nd one the 3rd one the 5th one
Explanation:
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Scientists took some cells and grew them in a Petri dish with nutrients. After a while, the cells grew to form a thin layer and stopped when they came in contact with other cells. What does this tell you about cells and the cell cycle?
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.
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.
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Explanation:
What is the meaning of life? (I’m Giving out 35 points)
Answer: do what makes you happy
Explanation:
Answer:
to live life to the fullest and appreciate the little things that make you happy and follow your dreams and just accept all the bad days because life isn't perfect and neither is everyone
Why are predators the smallest group at the top in the energy pyramid
Answer:
Predators eat prey, technically speaking.
Explanation:
The lowest and largest group takes the most energy cause it's first base. Going up the chain, the second group takes that energy from the first. Then the third, takes the energy from the second and so on. It's a cycle, and the the smallest group at the top of the energy pyramid will be given the less energy that travels throughout the pyramid.
I hope this makes sense.
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A period in history in which human transitioned from human power, animal power and hand made goods to fissile fuel power, hydro/hydroelectric power and machine produced goods.
A. The industrial revolution
B. The agriculture revolution
C. The medical revolution
D. The American revolution
Which set of atoms can be found in ALL carbon-based molecule?
Answer:
All organisms are made of four types of carbon-based molecules: carbohydrates, lipids, proteins, and nucleic acids. These molecules have different structures and functions, but all are formed around carbon chains and rings.
Carbon-based molecules have three fundamental structures—straight chains, branched chains, and rings.
2. True or false. Trees have to attract bark from other sources. *
O pol
True
False
Is mixing sand a gravel a physical or chemical change?
Answer:
I believe it's a physical change?
Explanation:
Mixing sand and gravel is considered a physical change as it only affects the physical properties, such as appearance and distribution, without altering the chemical nature of the substances involved.
A physical change is a transformation that does not alter the chemical composition or identity of a substance. In the case of mixing sand and gravel, both substances retain their individual properties and characteristics even when they are combined.
The sand particles and gravel particles remain unchanged in terms of their chemical composition.
The mixing process involves the physical interaction of sand and gravel particles, resulting in a uniform distribution of the two components. This change in arrangement does not involve any chemical reactions or the formation of new substances.
The sand and gravel can be easily separated by physical means, such as filtration or sieving, without undergoing any chemical transformations.
Therefore, mixing sand and gravel is considered a physical change as it only affects the physical properties, such as appearance and distribution, without altering the chemical nature of the substances involved.
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which characteristic of living organisms is responsible for the production of oxygen in the leaf of a plant exposed to sunlight.
Answer:
Photosynthesis.
Explanation:
Photosynthesis is a characteristic of living organisms and it is typically responsible for the production of oxygen in the leaf of a plant exposed to sunlight. It is a chemical process used by plants to obtain food from sunlight.
All living organisms such as plants and animals require energy to function properly (life activities). Thus, the cell organelle where energy from nutrients is released is generally referred to as mitochondria. Animals and plants retrieve energy using mitochondria to do cellular respiration because they typically act like a digestive system by taking in nutrients, breaking them down and obtaining energy rich molecules for cell-life activities.
Cellular respiration can be defined as a series of metabolic reactions that typically occur in cells so as to produce energy in the form of adenosine triphosphate (ATP). During cellular respiration, high energy intermediates are created that can then be oxidized to make adenosine triphosphate (ATP). Therefore, the intermediary products are produced at the glycolysis and citric acid cycle stage.
Sexual reproduction in animals depends on the production of gametes.
Which of these processes produces gametes in animals? *
Mitosis
Fertilization
O Meiosis
Binary fission
The process that produces gametes in animals is meiosis.
What is MeiosisMeiosis is a specialized type of cell division that occurs in the reproductive cells, or germ cells, of animals. It involves two rounds of cell division, resulting in the production of four haploid daughter cells, each with half the number of chromosomes as the parent cell.
During meiosis, the genetic material is shuffled and recombined through processes such as crossing over and independent assortment. This genetic variation contributes to the diversity of offspring produced through sexual reproduction.
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What is the role of oxygen in photosynthesis
Answer:
as fare as I can remember oxygen is actually a waste product that is produced at the end of a plant's photosynthesis cycle
Explanation:
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The Rio Grande river flows through the South Texas Plains ecoregion of Texas. The river is a major source of water for cities and farms in the area. Sometimes, so much of the Rio Grande's water is used that the river does not reach the Gulf of Mexico. How does the loss of river water affect ocean plants near the mouth of the river? A. Less sediment is deposited in the soil. B. The ocean plants cause more weathering. C. More algae grows and competes for resources. D. The slow water causes more erosion.
Answer:
A. Less sediment is deposited in the soil.
Explanation:
Less sediment is deposited in the soil if there is less amount of water receives by the ocean plants because river water brings minerals with them from passing through the mountains to the ocean. These sediments brings nutrients which are necessary for the ocean plants for their growth and development so we can say that less sediments are deposited in the soil of ocean plants due to less river water.
The model of DNA is known as a ___________ because it is composed of two _______ chains wrapped around each other.
A fox population used to have white fur. In recent years, tan and light
brown colors started to appear in the population.
Which option would cause such a change?
Answer:
Natural Selection or Adaptation
Explanation:
Because they change their fur color so predators cant find them as good
what does a Cell membrane look like
The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container.
Explanation:
Compare and contrast the elevated temperature of someone who is exercising vigorously and someone who has an infection
Answer:
Due to muscle contraction and fighting of white blood cells.
Explanation:
Exercise increases the temperature of body because about 20% of the energy produced in contracting muscles is used for muscle contraction while the remaining 80% is converted into heat energy, as a result body's temperature increases whereas a person who has infection also experience high body temperature because the body work faster to fight against the infection that leads to high temperature.
PLEASE HELP I AM ON A TIMER
Answer:
The water will move inside the cell
Explanation:
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Would the control group not receive the treatment, or receive the same treatment that has been used before?
Answer:
The control group receives either no treatment, a standard treatment whose effect is already known, or a placebo (a fake treatment).
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Darwin used the term 'Natural Selection' to be
him explain his theory of evolution What did
Darwin mean by the term Natural Selection?
!!pleas help!! :((
Answer:
Resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.
Darwin meant this my term 'Natural Selection'
Answer:
He defined natural selection as the "principle by which each slight variation, if useful, is preserved".
Explanation:
Darwin's Theory of Evolution by Natural Selection
More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.
what virus is this i need help
Answer:
Worm virus
Explanation:
They entering our butt to make our popoo
Answer:
Ebola
Explanation:
Delia is teaching her sister about important molecules in the body.
She tells her sister that one molecule provides a set of instructions that determines traits, such as eyecolor or hair color. Which molecule is Delia describing?
Pls help !!
Answer:
answer is A
Explanation:
Describe the contributions of Schlieden and Schwann to the cell theory.
Schwann - In 1839, he cells are the basic unit of animal structure
Schlieden - In 1838, he discovered cells are the basic unit of plant structure
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A patient named Roberto is grieving because he noticed that the money he has saved all his life is not going to his family but is instead going to his medical bills. He is also worried that he will eventually become a burden on his family. His nursing assistant called a social worker to help him cope with the emotional strain of his situation. Which need did the nursing assistant help with?
physical comforts
spiritual comforts
social needs
financial needs
Answer:
physical and social
Explanation:
physical because the social worker will help with talking to him and making him feel better
social because he might get money help
according to newtons first law of motion, what is required to make an object at rest move? enter your answer in the space provided
Explanation:
if a force is pushed onto an object. it will move with an increasing velocity
6. A pink snapdragon is crossed to a white snapdragon. What is the probability of getting a red snap dragon
As DNA is unzipping this enzyme comes in and begins synthesizing mRNA
A. RNA primase
B. RNA polymerase
C. DNA primase
D. DNA polymerase
WILL MARK BRAINLIST!!! only for correct answer
NEED CORRECT ANSWER ASAPPP
Answer:
D. 4
Explanation:
Reflection can be defined as a phenomenon which typically involves a change in the direction of a ray of light or waves as it falls on a smooth surface.
Simply stated, reflection occurs when a ray of light or wavefronts bounces off a smooth surface.
From the diagram provided above, the thin beam of light which illustrates reflection is the fourth because as it hit the surface, it bounced back to the medium from which it was originally propagated with.
what could happen to an organism when it’s dna mutates
How many reactants are in the fermentation chemical equation?