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.
How many molecules are in this formula?
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:
...................
These photosynthetic protists produce one third of the Earth’s oxygen that is generated through photosynthesis.
A) algae
B) moss
C) paramecia
D) protozoans
Answer:
A
Explanation:
this is because these photosynthetic protists have chlororphyll which is capable to make their own food materials through photosynthesis
Think about what abiotic factors giraffes and trees both need to survive. The tree and the giraffe are competing over what factor
Which type of biotechnology would be used by scientists who use the egg cell of an endangered animal to increase the population of the animal?
Genetic engineering because the genes of the animal would be modified
Genetic engineering because it is always helpful for the environment
Cloning because offspring that are exact copies are produced
Cloning because offspring would be produced in a few hours
Answer:
the 3rd option: Cloning because offspring that are exact copies are produced
Explanation:
Biotechnology is a field of science that comprises biology combined with technology. It utilises the living system with the technology to build products.
The correct answer is:
Option C. Cloning because offspring that are exact copies are produced.
This can be explained by:
Cloning is a mode of reproduction in which the replica of the parent is produced as offspring.The genetic content of the offspring is the same as that of the parent. Hence all the traits and the characters remain preserved.Therefore, for deliberately producing the endangered species cloning technique can be employed.
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loveholic drops in less than 2 weeks i’m going feral
Answer:
what's loveholic. i'm so sorry but it just looked so interesting i had to ask
Explanation:
A scientist lists the characteristics of an organism that he is observing
It is multicellular
It has cell walls made of cellulose,
It makes its own food,
In which of these Kingdoms should the organism be classified?
Animalia
Archaea
Fungi
Plantae
A scientist lists the characteristics of an organism which he is observing. This organism should be classified under the kingdom Plantae. Thus, the correct option is D.
What is Plantae?The living organisms on the planet are divided into five different kingdoms including Monera, Protista, Fungi, Plantae, and Animalia are classified on the basis of their characteristics such as the cell structure, mode of nutrition, mode of reproduction and the body organization.
Kingdom Plantae is a kingdom of the five kingdom classification given by R. H. Whittaker. Plants include green, brown and red algae, liverworts, mosses, ferns and the seed plants with or without the formation of flowers. They have the characteristics including multicellular organisms, covered with a cell wall made up of cellulose, are autotrophs (make their own food), contain photosynthetic pigment in plastids.
Therefore, the correct option is D.
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What happens to a plant's color in the fall? Select the two correct answers. A. The leaves become very green as more chlorophyll is made. B. The chlorophyll production stops, and the green disappears. C. Yellow and orange are shown on the leaves. D. The green turns white. E. The leaves turn bright green.
PLS ANSWER DUE TODAY ILL GIVE BRAINLIEST
An example of a biosphere is _________.
Answer options:
Rainforest
Rocks, soil, water, and air on Earth
All the biomes of Texas
Earth
The Titanic was the most
A. vessel
B. luxurious
C. gazed
ship of its kind in 1912.
Answer:
B
Explanation:
The other answers dont make sense
Plants that are grown from undifferentiated cells of leaves, stems, or roots are produced by
A) fusion of spores
B) vegetative propagation
C) sexual reproduction
D) fission of gametes
Please help its due in two hours.
How are convex and concave lenses used?
Answer:
Telephoto Lenses Are Combinations of Convex and Concave Lenses. Most optical devices make use of not just one lens, but of a combination of convex and concave lenses. For example, combining a single convex lens with a single concave lens enables distant objects to be seen in more deta
Explanation:
Please help me with this worksheet !!!
What results when the air surrounding a bolt of lighting experiences a rapid increase in temperature and pressure.
PLSSS I NEED HELP!!!
Explain how natural forces and human effects affect the observed global temperature (black line) in graph 2. Is solar radiation a natural force or a human effect?
Answer: There is substantial evidence that human activities, especially burning fossil fuels, are leading to increased levels of carbon dioxide and other greenhouse gases in the atmosphere, which in turn amplify the natural greenhouse effect, causing the temperature of the Earth's atmosphere, ocean and land surface to increase.
Explanation:
How does knowing the number of valence electrons in one of the alien elements help to identify it? Explain how a periodic table is used to accomplish this task.
Please answer this question, preferred to be answered logically.
Raccoons might go through our trash cans to find food because…
Answer:
They are hungry?
Explanation:
Explanation:
because they are racoons?
What powers the protein ATP Synthase?
A. light
B. glucose
C. NAPH
D. H+
There are milions of organisms on Earth that scientists have dassified into different levels of organization. Which of these charac wodd be most important to sentias
when classifying organisms?
where the organism lives
how small the organismis
the genes of the organism
the shape of the organism
Chloroplasts Functions:
1. Organizes internal parts of the cell.
2.Cell movements, and structural support.
3.Makes ribosomes.
4.Photosynthesis
which one?.
When the moon passes through the Earth's shadow, a ______ eclipse occurs.
A. partial
B. full
C. lunar
D. solar
True or False: There is more water in our rivers and lakes combined than there is underground.
it's false
there's more water underground
True or False. The arrow labeled C represents a transfer of chemical energy to mechanical energy. Explain why this is true or false.
Which group of vertebrates are endotherms and have amniotic egg?
Answer:
birdBipedal, endothermic, tetrapod vertebrate that lays amniotic eggs and has wings and feathers.
Explanation:
In a given family, the mother is a carrier for red-green color blindness, and the father has normal vision. The couple has one son and one daughter. What are the chances that the son has the red-green color blindness disorder? What are the chances that the daughter has the disorder? Explain your answers.
make short pls
Answer:
50%
Explanation:
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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
(BRAILIIEST) Can someboody halp me with this
Answer:
The answer you are looking for is B. The gravitational pull of the moon
Explanation:
The moon influences tides the most. The moon's gravitational pull on the earth is strong enough to tug the oceans into bulge
Answer:
B.
Explanation:
I don't know how to explain but I was always told the moon effected/affected
the tide.
How does energy move in a healthy ecosystem from the sun to the plants and animals?
Answer:
First,the sun transferes heat to the plants,helping them grow.Animals such as deer who would eat grass,eat plants.
Explanation:
Energy moves from one trophic level, or level of the food chain, to the next as primary producers take energy from the sun to make their own food in the form of glucose.
What is energy transfer?
The sun is the principal energy source for practically all ecosystems on Earth. Energy moves from one trophic level, or level of the food chain, to the next as primary producers take energy from the sun to make their own food in the form of glucose. Primary producers are then consumed by primary consumers, who are in turn eaten by secondary consumers, and so on. The food chain provides the simplest visual representation of this energy transfer.
A new trophic level is represented by each link in the chain, and the arrows depict the flow of energy through the chain. The primary producer is always at the bottom of a food chain. Plants are the most important primary producers in terrestrial ecosystems, whereas phytoplankton is the main primary producer in marine ecosystems. In their respective habitats, each generates the majority of the nutrients and energy required to maintain the rest of the food chain.
Gross primary productivity is the collective term for all the biomass produced by primary producers. After the primary producer has utilized the energy required for respiration, what is left over is what is known as net primary productivity. This is the portion that can be ingested and passed up the food chain by the main consumers.
Therefore, the transfer of energy within the trophic levels results in energy transfer.
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A) How long will it take for 40.0 grams of Radium-226 (Ra-226) to decay to leave a total of 2.5 grams of Ra-226? Ra-226 has a half-life of 1600 years.
B) If there are 80.0 grams of Neptunium-240 (Np-240), how much Neptunium-240 will remain after 4 hours? The half-life of Neptunium-24 is 1 hour.
Answer:
a) 6400 years
b) 5 grams
Explanation:
a) to get 6400 years, the 40 grams is halved 4 times to get to 2.5g and 4 times 1600 is 6400
b) 80 is halved 4 times and the final result you get is 5 grams
80/2= 40/2= 20/2=10/2=5
each divided by 2 represents 1 hour
Answer:
[ A ] 6400 years
[ B ] 5 grams
Explanation: