Answer:
Sexual reprodution! wheres my cookie?
Explanation: its right i think
Answer:
the answer is C
Explanation:
What is ONE major difference in the problems associated with obtaining measurements on the sizes or densities of animal populations versus plant populations?
I think one major difference with that is that animals can move around, go distances in search for food or mate, and thus make the animal densities per geography vary greatly. Birds migrate regularly, so their population densities tend to vary with seasons. Their mobility also depends on the availability of food, so animals go away if there are no food in the area.
Plants on the other hand don't move around faster (they can migrate by reproduction: it's their seeds moving around). Thus their densities tend to be more constant per season/life cycle.
Why did Mendel study pea plants?
They reproduce asexually and have one trait that is easy to observe.
They reproduce asexually and have many traits that are easy to observe.
They reproduce sexually and have one trait that is easy to observe.
They reproduce sexually and have many traits that are easy to observe.
Answer:
For Gregor Mendel, pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.
Explanation:
Gregor Mendel chose the pea plants for his experiments because the garden pea is an ideal subject in the study of genetics for the following reasons: The presence of observable traits with contrasting forms. It produces many offspring in one cross. Short life cycle.
Why did Mendel choose pea plants to study?Solution: Pea plants were chosen for Mendel's experiments because they are easy to grow, have a short life period, and produce larger flowers. Pea plants are also self-pollinated.
What was the purpose of the pea plant study?Gregor Mendel describes his experiments with peas showing that heredity is transmitted in discrete units. From the earliest time, people noticed the resemblance between parents and offspring, among animals and plants as well as in human families. Gregor Johann Mendel turned the study of heredity into a science.
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Prokaryotic cells reproduce by a process called a. mitosis. b. meiosis. c. binary fission. d. binary fusion. 2. In eukaryotic cells, DNA is copied during a phase of the cell cycle called a. M phase. b. S phase. c. G1 phase. d. G2 phase. 3. The cytoplasm of a eukaryotic cell divides by a process called a. mitosis. b. meiosis. c. replication. d. cytokinesis. 4. The fibers that extend from centrosome to centrosome during mitosis are a. polar fibers. b. spindle fibers. c. kinetochore fibers. d. binary fibers. 5. In the G0 phase, cells a. synthesize DNA. b. prepare for cell division. c. exit from the cell cycle. d. move their chromosomes to the cell equator.
Answer:
1. binary fission
2.s phase
3.cytokinesis
4 spindle
5.exit from cell cycle
Cell cycle is essential for the cell to divide and grow. The correct answers are 1. Binary fission, 2. S-phase, 3. Cytokinesis, 4. Spindle fibers, 5. Exits from the cell cycle.
1. Binary fission: The parent cell divides into two brand-new daughter cells. The genetic material is split and duplicated into two pieces. Here, the DNA of each daughter cell is duplicated.
2. S-phase: DNA replication and a large portion of DNA repair activities take place in cells during the S phase, which is situated between the G1 and G2 phases of the cell cycle.
3. A cell splits into two daughter cells by physically dividing its cytoplasm through a process called cytokinesis.
4. Spindle fibers: When a cell divides during mitosis and meiosis, spindle fibers are the filaments that make up the mitotic spindle. During nuclear division, they play a major role in transporting and sorting the chromosomes.
5. G0 phase: G0 phase cells do not actively prepare to divide. When cells leave the cell cycle, they enter a quiescent (inactive) state. Some cells briefly enter G0 before the start of G1 is signaled by an outside source.
Therefore, the correct answer is c) binary fission, b) S-phase, c)cytokinesis, d) spindle fibers and e) exit from cell cycle.
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Which of the following statements is true about membranes?
A.
Mucus membranes line cavities that have an external opening in the body,
B.
Serous membranes line internal cavities that have no external opening in the body,
C.
When a membrane is attached to an organ it is called a visceral membrane,
D. All of the above.
The true statements are all of the above. Hence, option D is correct.
What do you mean by Mucous membrane?A Mucous membrane may be defined as the epithelial tissues that involve the inner lining of the internal organs that secrete mucus. It includes the respiratory system, gut, etc.
Mucous membranes line cavities that have an external opening in the body. Serous membranes line internal cavities that have no external opening in the body, while a visceral membrane is a type of membrane that is attached to an organ.
Therefore, the correct option for this question is D, i.e. all the above.
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17. What are some of the major causes of extinction today?
Scientists have concluded that Tiktaalik lived when deciduous trees began appearing on land, an event that occurred hundreds of millions of years ago. Which radiometric probe (Carbon-14, Iodine-129, Uranium-238) would you choose to determine a more accurate age of the Tiktaalik fossil? Explain your reasoning.
PLEASE HELP ME ILL GIVE 25 POINTS
Answer:
Carbon
Explanation:
Carbon leaves a bigger footprint when investigating fossils or skeletons scientists use carbon samples.
The Carbon-14 radiometric probe should be used to determine a more accurate age of the Tiktaalik fossil. Radiometric dating is the technique used to calculate the age of fossils.
What is radiometric dating?Radiometric dating or radioactive dating is a technique which is used to date the materials such as rocks or carbon, in which trace amounts of radioactive impurities were selectively incorporated when they were formed in the fossil such as trees.
Radiometric dating is used to calculate the age in years for a geologic material by measuring the presence of a short-life radioactive element in the fossil. For examples, carbon-14, or a long-life radioactive element plus its decay product which is potassium-14 or argon-40.
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A community switches from a coal power plant to a wind power plant to
obtain electricity. What is a likely outcome of this switch?
A. Bird and bat populations will grow larger.
B. Noise pollution in the community will decrease.
C. Electricity will become less expensive.
D. Acid rain will be reduced.
Answer:
C. electricity will become less expensive
Explanation:
as wind energy is free, so Electricity will become cheap.
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Merry Christmas good day
Answer: D. acid rain will be reduced
Explanation:
a single strand of DNA helix has the code CGCTAA. which would be the complementary code on the other strand of helix
Answer:
The other side would be GCGATT
Explanation:
Adenine (A), cytosine (C), guanine (G), or thymine (T).
A (adenine) always pairs with T (thymine)
C ( cytosine) always pairs with G (guanine)
Hope this helps.
Sorry if it doesn't.
From where the richest coller come from
Answer:
what?
Explanation:
Answer:
The color purple has been associated with royalty, power and wealth for centuries. In fact, Queen Elizabeth I forbad anyone except close members of the royal family to wear it. Purple's elite status stems from the rarity and cost of the dye originally used to produce it
Explanation:
If that is not what you are looking for then I have no idea.
Hope this helps!
Herman's company has adopted a paperless policy. Employees no longer print letters or documents and instead do everything on the computer. Office paper use has dropped by 40% in the last six months. If everyone adopted the same policies, what impact would that have on the environment?
Answer:
There would be a decrease in deforestation, because fewer trees would be cut down for paper.
Explanation:
If everyone reduce the use of papers it will lead to reduce in deforestation.
What is deforestation?Deforestation refers to the loss of forest area worldwide to other uses such as agricultural land, urbanization and mining activities. Deforestation, greatly accelerated by human activities since the 1960s, has adversely affected natural ecosystems, biodiversity and climate.
Several factors, both human and natural, cause deforestation. Natural factors include natural forest fires and diseases caused by parasites that can lead to deforestation. Nevertheless, human activities are one of the main causes of global deforestation.
Therefore, If everyone reduce the use of papers it will lead to reduce in deforestation.
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Raisins are a snack that is made from dehydrated grapes. While the sugar remains in the fruit, the water is removed, giving it its characteristic wrinkled appearance. A student is curious if she could rehydrate a raisin and get a grape again. She runs an experiment where she places a raisin in distilled water, another raisin in tap water, and a third raisin in salt water. The movement of water in and out of the raisin is called
Answer:
This structure which allows these passages is called the cell membrane. Substances outside the cell can move in and out of the membrane through a process called diffusion. When the substance in question is water, the process is referred to as osmosis. ... Water can be put back into a raisin through the process of osmosis.
Final Practice: Read each statement. If the statement is true, write “T”. If the statement is false, write “F”.
Answer:
F, i just guessed because I do not see the statements
Explanation:
How is cell differentiation different than mitosis?
Cell differentiation is the process by which cells specialize to achieve their required functions. In order for a cell to differentiate, it will express specific genes. ... Importantly, mitosis produces cells that are identical to each other (clones).
Help! Will mark brainiest.
Which of the following are representative organisms?
a. Sponges
b. Cnidarians
c. Roundworms
d. Annelids
e. Mollusks
f. Arthropods
g. Echinoderms
h. Vertebrates
Answer:
Roundworms
most sensible
9) Which of the following statements is TRUE about photosynthesis?
The purpose that a system is designed to achieve is called the _____.
feedback
output
goal
process
Answer:
goal
hope it helps
thanks for the points
Answer:
maybe it's goal....
Explanation:
just trying
For the decay processes below, describe the following:
• What happens during the decay? Include what happens in the nucleus of the
parent element
What special particle(s) is/are produced, aside from the daughter element?
• How can you use the parent element to determine the daughter element by
referring to the periodic table?
.
a. Alpha decay (3 pts)
b. Beta decay (3 pts.)
c. Gamma decay (3 pts.)
hi could somebody help me
Answer:
MOUTH:
Food becomes moistFood is cut into piecesFood is squeezedSTOMACH:
Proteins are broken downFood is mixed with acidCarbohydrates are broken downI hope this helps :)
Explanation:
plz mark B R A I N L I E S T
Answer:
Mouth :
Food is cut into piecesCarbohydrates are broken downFood is squeezedStomach :
Proteins are broken downFood becomes moistFood is mixed with acidhope it helps!
what is a primary role of decomposers in ecosystem
Answer:
to decompose organic matter
Explanation:
Answer:
Decomposers feed on dead things: dead plant materials such as leaf litter and wood, animal carcasses, and feces. They perform a valuable service as Earth's cleanup crew. Without decomposers, dead leaves, dead insects, and dead animals would pile up everywhere.
HELLLLPPPPPPPP Which statements describe asexual reproduction? Check all that apply
results in offspring with different DNA than parent
results in offspring with the same DNA as parent
requires only one parent to produce offspring
requires two parents to produce offspring
includes cell divisions that are similar to the cell divisions in meiosis
includes cell divisions that are similar to the cell divisions in mitosis
Answer: the second one, the third one, and the last one.
Explanation:
Answer:
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.
Explanation:
What canwe do to decrease our disruption of the nitrogen Cycle?
Answer:
We can use less pollutants.
Explanation:
Gracias a una investigación internacional se ha averiguado que las actividades humanas causan estragos en los bosques tropicales al alterar el ciclo de nitrógeno normal. Los descubrimientos, publicados en Science, proporcionaron las primeras pruebas de efectos a largo plazo por contaminación de nitrógeno en árboles tropicales. Los científicos, de Austria, Canadá, Alemania y Panamá, trabajaron en dos emplazamientos remotos del Observatorio Terrestre Global del Instituto Smithsonian en Panamá y Tailandia. «La contaminación atmosférica fertiliza los bosques con uno de los nutrientes más importantes para el crecimiento», afirmó S. Joseph Wright del Instituto Smithsonian de Investigación Tropical en Panamá. «Comparamos el nitrógeno que contenían hojas de especímenes secos recogidas en 1968 con el de muestras de hojas de 2007. La concentración de nitrógeno foliar y la proporción de isótopos de nitrógeno tanto pesados como ligeros ha aumentado en los últimos 40 años del mismo modo a como lo hicieron en un experimento anterior en el que se abonó el suelo del bosque. » El nitrógeno se origina en el interior de las estrellas gracias a temperatura y presión elevadas. En condiciones normales es incoloro, insípido e inodoro, y poco propenso a reaccionar con otras sustancias. En la atmósfera flota más del 75% del nitrógeno, que además es un componente esencial de las proteínas. Uno de los cambios que «activan» el nitrógeno viene producido por ciertas bacterias colonizadoras de raíces vegetales que extraen nitrógeno de la atmósfera y lo que significa o fijan en una forma útil para el crecimiento vegetal. Cuando las bacterias ya no necesitan el nitrógeno la planta lo absorbe, para luego pasar a los animales. La fijación del nitrógeno se define mediante el proceso de Haber, que convierte el proceso de nitrógeno gaseoso en amoníaco, un ingrediente común en los abonos. La fijación de nitrógeno por medios artificiales ha aumentado la cantidad de emisiones de nitrógeno reactivo en un 100%. Según los investigadores, el nitrógeno presenta dos formas o isótopos, átomos con la misma
If new experimental findings contradict a scientific theory, what might happen to the theory?
A. The new evidence could be accepted and the theory changed.
B.The theory could become law.
C.The theory could stay, ignoring the new evidence.
D.The new evidence could be rejected because it does not support the theory.
Answer:
A. The new evidence could be accepted and the theory changed.
Explanation:
most reasonable answer
Ribosomes are the site where
are produced.
Amino acids are coded for by triplet bases in RNA called
Answer:
Ribosomes are where PROTEINS are produced.
Amino acids are coded for by triplet bases in RNA called A CODON.
Explanation:
Answer:
proteins
codons
Explanation:
Edge
Identify the structures on the right.
Label A
Label B
Label C
Label D
Answer:
correct
Explanation:
Answer above is correct
Which of the following types of particles found in an atom has no charge?
A. electron
B. nucleus
C. neutron
D. proton
Answer:
Neutron
Explanation:
Neutrons are uncharged particles found within all atomic nuclei.
Which TWO types of rock are formed as particles get pushed closer together?
A. Metamorphic
B. Extrusive igneous
C. Intrusive igneous
D. Sedimentary
Answer:
Sedimentary rock? Because when sediments get pressed together
And then turn into a rock
in the phloem, what goes out?.
Answer:
His heart. If you talking about the poem, "MY HEART GOES OUT".
Explanation:
Which of the following best explains why DNA fingerprints can be used to identify an individual, such as from a crime scene sample?
Group of answer choices
DNA is inherited from both maternal and paternal parents
DNA from 2 different species can be combined using restriction enzymes
DNA is used to make proteins during protein synthesis
Each individual has a unique DNA sequence, with the exception of identical twins
Answer:
4.
Explanation:
Everyone's DNA is unique unless they are identical twins or if you have some kind of transplant.
Of the following best explains why DNA fingerprints can be used to identify an individual, such as from a crime scene sample it is the situation that Each individual has a unique DNA sequence, with the exception of identical twins. The correct answer is option 4.
What are identical twins ?These are the babies that are formed from multiple fusion of gametes and resulting into double fertilization.
DNA is inherited from both maternal and paternal parents. Yes, it is so but the pattern is not same as it will be possible to get the idea of the pattern and analyse along with the prediction of the genome as only few % is predicted.
DNA is used to make proteins during protein synthesis and this situation is clearly correct too but the fact is that this is not helping in the case of DNA fingerprinting where it is not easy to firstly see the DNA pattern then the RNA and then the amino acids and then the proteins.
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If you are analyzing the nutrients in a food, how would you decide if the food is healthy or not?
Answer:
If a food has a daily value of 5% or less of a nutrient, it is considered to be low in that nutrient. A food is a good source of a nutrient if the percent daily value is between 10% and 19%. If the food has 20% or more of the daily value, it is considered an excellent source of that nutrient.
Explanation:
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