Answer:
1.All multicellular organisms use cell division for growth and the maintenance and repair of cells and tissues. Cell division is tightly regulated because the occasional failure of regulation can have life-threatening consequences. Single-celled organisms use cell division as their method of reproduction.
2.What happens to cells that "decide" not to divide? If the decision is to not divide, the cell goes into a quiescent, or nondividing state, called G0 (G zero).
3.Prophase is the first phase of mitosis. During this phase, the chromosomes inside the cell's nucleus condense and form tight structures. In fact, the chromosomes become so dense that they appear as curvy, dark lines when viewed under a microscope (Figure 1).
4.Mitosis is a process where a single cell divides into two identical daughter cells (cell division).
5.In bacterial cells, the genome consists of a single, circular DNA chromosome; therefore, the process of cell division is simplified. Mitosis is unnecessary because there is no nucleus or multiple chromosomes. This type of cell division is called binary fission.
6.If a cell has not properly copied its chromosomes or there is damage to the DNA, the CDK will not activate the S phase cyclin and the cell will not progress to the G2 phase. The cell will remain in S phase until the chromosomes are properly copied, or the cell will undergo programmed cell death.
7.Cytokinesisis the part of the cell division process during which the cytoplasm of a single eukaryotic cell divides into two daughter cells. Cytoplasmic division begins during or after the late stages of nuclear division in mitosis and meiosis.
8.Metaphase. Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide.
9.During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes.
11.When Replication Errors Become Mutations. Incorrectly paired nucleotides that still remain following mismatch repair become permanent mutations after the next cell division. This is because once such mistakes are established, the cell no longer recognizes them as errors.
Who published a book on how the planets move due to gravity
A lot of people did. Including me.
Answer:
Newton's
5.1 Newton's laws of motion
Newton published his laws of motion and universal gravitation in The Mathematical Principles of Natural Philosophy, commonly known as the Principia, in 1687.
I hope it's helpful!
Charles Darwin's theory of evolution describes how species evolve due to natural selection. Which of these is NOT evidence of natural selection
Camels have long, bushy eyelashes
Mint plant varieties are crossed to express desirable traits
The snowshoe hare is white in winter and brown in summer
Galapagos finches have stronger beaks after years of drought
please help
On the date chart above the hight and low tide depths were recorded every coupl days. Looking specially at February 14th what type of tide is occurring? What moon phase would possibly occur on this date
Answer:
Explanation:um I don't really know full moom?
In what direction and with how much net force will the satellite move?
Explanation:
I am not sure with this answer but the satellite should be moving in the direction of 1000N-left since the greater force is being applied on the left side which 1000N. I am just learning on it.
Stephan’s mother is a mineralogist, and sometimes she brings home samples to study. Stephan observesand compares these minerals. He knows minerals form in several ways. He is especially interested in the minerals that form from volcanic activity and the kinds of crystals they form. What determines crystal size in minerals formed by lava or magma?
A. the kind of mineral that formed
B. the amount of material available
C. the rate at which the minerals cooled
D. the materials in the lava or magma
The rate at which the minerals cooled determines the crystal size in minerals formed by lava or magma. The correct option is C.
What determines crystal size in minerals?The solution is extremely saturated with some minerals, crystals form as magma cools. The crystals are quite tiny because they did not have much time to form if the magma cooled quickly. The crystals have ample time to form and become huge if the magma cools gradually.
The rate at which the minerals cooled Crystal size in minerals formed by lava or magma is primarily determined by the rate at which the minerals cooled.
When lava or magma cools slowly, it allows crystals to grow larger. Conversely, when it cools rapidly, crystals have less time to grow and thus remain smaller.
Therefore, the correct option is C.
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The graph below shows how the numbers of two different organisms in a forest changed over time. The
changes in population sizes can be used to make inferences about the relationship between wolves and
rabbits in this forest.
]
Based on the information in the graph, what is the most likely relationship between these organisms?
A.Wolves are predators of rabbits.
B.The relationship between wolves and rabbits is commensalism.
C.Rabbits and wolves rely on the same food source.
D.Wolves and rabbits have a mutualistic relationship.
Answer:
I think it would be A.
Explanation:
Scientists have discovered an organism with the following characteristics:
• multicellular
• needs to eat food
• has a complex nervous system
• is able to move from one location to another
• growth occurs throughout its body
In which kingdom is this organism most likely to be classified?
Animalia
Bacteria
Fungi
Plantae
No
Answer:
Animalia
Explanation:
...................
The _____ controls what enters and leaves the cell.
1.mitochondria
2.endoplasmic reticulum
3.nucleus
4.cell membrane
what are some traits of an index fossil? what are they used for?
A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata.
Light energy travels as -
A: compressional waves
B: primary waves
C: surface waves
D: transverse waves
Answer:
D
Explanation:
How can you use the terms of air pressure, air masses, and fonts to describe the formation of a tornado ??
Photosynthesis is to oxygen as:
A. Oxygen is to carbon dioxide
B. Cellular respiration is to carbon dioxide
C. Cellular respiration is to oxygen
D. Cellular respiration is to enzymes
Answer: It is C but if it was multiple choice it would be both B and C.
Explanation: Allow me to explain my reasoning. During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate). And allow me to explain the answer C. Cellular respiration can occur both aerobically (using oxygen), or anaerobically (without oxygen). During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as byproducts. In cellular respiration, glucose and oxygen react to form ATP. Therefore, it can be both B and C if it was multiple choice. Thank you for your time.
Photosynthesis is to oxygen as Cellular respiration is to carbon dioxide. Thus option B is correct.
what is photosynthesis ?The process in which sunlight energy is used by plants, algae and certain bacteria convert them into chemical energy and starch called as photosynthesis.
Photosynthesis occur in chloroplast which has its own DNA, genes and hence can synthesize their own proteins, photosynthestic Pigments responsible for trapping sunlight present in chlorophyll pigment of chloroplast, like chlorophyll a, b and c.
Bacteria also have chlorophyll known as bacteriochlorophyll can absorb infrared rays, other pigments are Carotenoids which are yellow, orange or red-coloured pigments that absorb bluish-green light., Xanthophyll, Phycobilins.
plastids are found in the cytoplasm of eukaryotic photosynthetic organisms. They contain pigments and store nutrients. Plastids are of three types such as Leucoplast, Chromoplasts, Chloroplasts
Antennae is made up of 100 to 5000 pigment molecules that capture light energy from the sun in the form of photons, Reaction Centers where photosynthesis occur.
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Scers who search for oss scheuse the smalfossilto describe some of the finds. An example of a transitional fossilis Dimetrodon, which lived 280-265 million years ago. Dimetrodon had alzard-e appearance but had a sale
structurecking out from is back that owed to regulate is body temperature, an ability that is found today in modern warm-blooded mammals. While Dimetrodon swallowed its prey whole like reptiles do it also had different types of teeth, a tratalo
common to which of the best explains how tonalfossils support the theory of evolution?
Transitional fois show rats common to ancestors as well as descendants
Trafo show how the organic characteristics remain the same over time
Tanlos show how individual organism can change their characteristics during their times
Transitional fossils show how populations of past organisms were not able to change their characteristics over time
Answer:
sorry for the answer because I can"t understand it
Which muscle has 3 muscle "heads' or points of origin that is responsible for straightening the arm?
O Abdominals
O Biceps
O Triceps
O Gluteus Maximus
Answer:
The triceps brachii gets its name because it contains three muscle 'heads' or points of origin. These include the: Medial head. Lateral head.
Explanation:
sorry if i am wrong
What is the measurement of the wavelength shown in the picture?
A: 3 cm
B: 3.5 cm
C: 4 cm
D: 4.5 cm
B :3.5 cm
is the answer as the measurement of the wavelength show in the picture………...........
What is a phenotype? *
The genetic makeup of the individual
The expression of a trait; PHysical appearance
An organism that has the same genes for a trait (example: TT or tt)
The passing of traits from parent to offspring
Answer:
B, the expression of a trait, Physical appearance
Explanation:
Genotype refers to the genetic makeup of someone, but phenotype refers to the physical traits the person displays based off their genotype.
The hypothesis that the continents once formed a single landmass, broke up and drifted to their present location is either:
Pangaea
Evolution
Atomic
Continental Drift
Pangea was the super continent and it divided and drifted apart cause of continental drift
Water that is heated by the sun evaporates.
Which number represents this process on the hydrologic cycle diagram?
1
2
3
4
Illustration of water cycle showing land and water body with arrows pointing outward and inward to both land and water body and some numeric labels one, two, three, and four mentioned along with arrows
Answer:
Answer: 1
Explanation:
I did the quiz
Many animals have beneficial traits that help them survive their environment. How do these traits develop in organisms?
Answer:
Natural selection allows these traits to develop in organisms to help them survive their environment.
Explanation:
Which of these statements best describes the connection between biodiversity and evolution?
The more biodiversity an area has, the greater the chances of new species arising.
If biodiversity is high, then more predation will take place, preventing species from evolving.
Without a lot of biodiversity, organisms are more likely to survive, so they have more time to adapt.
Evolution depends upon low biodiversity to keep population sizes down, which increases numbers of genes.
Answer:
I believe the answer is c
Explanation:
What powers the protein ATP Synthase?
A. light
B. glucose
C. NAPH
D. H+
Raccoons might go through our trash cans to find food because…
Answer:
They are hungry?
Explanation:
Explanation:
because they are racoons?
The diagram below shows a food web. The organisms in a food web can be classified based on how they
get the energy they need.
Which organism in this food web is a primary consumer?
A>mouse
B>snake
C.fox
D.hawk
Please help, this is worth 20 points!
Describe the movement of Earth’s mantle. Explain how convection currents can cause tectonic plates to move.
Answer:
Heat rising and falling inside the mantle creates convection currents generated by radioactive decay in the core. The convection currents move the plates. Where convection currents diverge near the Earth's crust, plates move apart. Where convection currents converge, plates move towards each other.
Convection currents from core radioactive decay rise and fall in the mantle. Convection currents move plates. Plates separate near convection currents. Plates converge at convection currents.
What are convection currents?Convection currents are caused by differential heating. Warm, less dense, lighter material rises while cool, more dense, heavier material sinks. Convection currents are patterns of circulation that are produced by this movement in the Earth's mantle, oceans, and atmosphere.
Convection currents are produced by radioactive decay in the core and are caused by heat rising and falling inside the mantle. The plates are moved by convection currents. Plates separate where convection currents split close to the Earth's crust. Plates move in the direction of one another where convection currents converge.
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List 4 different organisms from the same food chain in the order of how the energy flows.
Answer:
Worm, Bird, Snakes, Hawks.
Explanation:
Hope this helps in anyway,
Worm, Bird, Snakes, Hawks are the order of how the energy flows.
What is Food chain?
Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism.
Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant. Plants, which convert solar energy to food by photosynthesis, are the primary food source.
Because energy, in the form of heat, is lost at each step, or trophic level, chains do not normally encompass more than four or five trophic levels. People can increase the total food supply by cutting out one step in the food chain.
Therefore, Worm, Bird, Snakes, Hawks are the order of how the energy flows.
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The Classification level that includes the most specific traits is an organism's ______
Which of the following is true about the sun's radiation? It is long-wave. It is short-wave. 40 percent is reflected by the atmosphere. 60 percent reaches Earth's surface. None of the rays are harmful.
Answer:
it's long wave, 40% is reflected by the atmosphere, 60% reaches Earth's
Explanation:
hey help please......
Answer:
Biotic:The bugs and the trees
Explanation:
The bugs wouldn’t be eaten by the frogs because frogs rely on water and the trees would survive from rain.
Organism's traits depend on the____in its cells.
1.colors
2.fats
3. lipids
4. proteins