The nucleus of the cell organizes DNA. The nucleus contains structures resembling threads; Chromosomes are the more compact form of these structures.
In a eukaryotic cell, the most obvious organelle is the nucleus. It houses the cell's chromosomes and is where practically all DNA replication and RNA union happens. The nuclear envelope, a membrane that separates the nucleus from the cytoplasm, is spherical in shape. In their nuclei, each cell has a nearly identical copy of our DNA. However, because DNA molecules can stretch to a length of more than six feet, they are packed and arranged in a very specific way to fit in the tiny nucleus. Before cell division takes place, centrioles help organize the chromosomes, ensuring that each daughter cell has the correct number of chromosomes.
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Imagine a population of moths. White moths are easier for birds to see and eat. Black moths blend into their surroundings, so they are less visible to birds than white moths. As a result, black moths are more likely to survive and reproduce, enabling the gene for black coloration to be passed on to the next generation. This increases the frequency of genes for black coloration in the population. Which evolutionary process does this scenario describe
Answer:
The correct answer is - natural selection.
Explanation:
Natural selection is a process of adapting according to the environmental change in order to survive and reproduce and increase their number. It is represented by Darwin for the first time. Natural selection leads to evolution.
In this case, White moths adapt according to the environment by increasing the population of black moths in order to blend with the surrounding and as the result, black moths are more likely to produce and survive and passed this trait to the next generation.
where do you see collision in a roller coaster ride?
Answer:
i dont think that happens very often
Explanation:
Primary decomposers are
select all that apply
fungi
plants
trees
bacteria
animals
Over the centuries cockroaches have become smaller and flatter, making it easier for them to hide and find their way into home cabinets and pantries. What does this demonstrate?
Geographic isolation plays a role in speciation
frem
The environment is important in selecting adaptations
Artificial selection can result in the development of resistant species
Selective breeding can result in passing favorable traits to the next generation
Answer:
adaptation
Explanation:
the roaches adapt to their small environment and get smaller due to evolution
when a plant forms glucose molecules, what is its source of carbon atoms
The walls of the human heart are made of a specialized form of muscle tissue known as cardiac tissue. This cardiac, or heart, tissue contracts the chambers of the heart to cause rhythmical beating and blood circulation.
Tissues in the human body, such as cardiac tissue, are made up of
A.
nerves.
B.
blood.
C.
organs.
D.
cells.
please help meee
Answer:
d. cells
cardiac tissue are made up of cells.
Con ayuda de un microscopio se observa una bacteria en el agua transcurridas (2) se miran muchas bacterias . Que ocurrio alli ,que tpo de reproducccion sucedio meiosis o mitosis
Answer:
Ninguna de las dos. No ocurre ni mitosis ni meiosis.
Probablemente haya ocurrido fisión binaria/bipartición.
Explanation:
En este caso estamos hablando de bacterias, organismos unicelulares procariotas. Estos tienen una forma de reproducción asexual denominado fisión binaria. Los eucariotas por su parte pasan por periodos de división celular implicada en el crecimiento denominado mitosis, y división celular implicada en reproducción sexual, denominada meiosis.
La fisión binaria, también conocida como bipartición, si bien muy parecida a la mitosis en algunos aspectos, es la forma de reproducción de las bacterias.
Ambas, mitosis y fisión binaria, implican un duplicado de material genético. El ADN se duplica y una copia va a cada célula hija. Lo mismo sucede con el resto del contenido celular. Finalmente ocurre citocinesis. Sin embargo, a diferencia de la bipartición, la mitosis requiere de mecanismos mucho mas complejos de duplicación celular e involucra también a la cariocinesis, ausente en bacterias.
La fisión binaria ocurre muy rápidamente, en un breve período de tiempo puede hallarse una diferencia considerable en la cantidad de células presentes en un sustrato, producto de esta división. Es por esto que el crecimiento que exhiben las bacterias como población, sigue un modelo exponencial.
which of the following scientists can be identified as a taxonomist?
Answer: Taxonomy is the science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world. Using morphological, behavioral, genetic and biochemical observations, taxonomists identify, describe and arrange species into classifications, including those that are new to science.
Earth and Venus are almost identical....
Answer:
earth will have longer !!!
5. The organs of the respiratory system include the trachea, the bronchi, the diaphragm, and the ___________________________.
What do you need to create a chemical bond?
Answer:
A strong chemical bond is formed from the transfer or sharing of electrons between atomic centers and relies on the electrostatic attraction between the protons in nuclei and the electrons in the orbitals. The types of strong bond differ due to the difference in electronegativity of the constituent elements.
Explanation:
What are structures like the stomach and intestines called?
A.
tissues
B.
organs
C.
organisms
D.
cells
El aparato digestivo de los cocodrilos, adaptado para ingerir una gran variedad de presas es una adaptación de tipo?
La respuesta correcta para esta pregunta abierta es la siguiente
A pesar de que no anexaste opciones o incisos para responder, podemos comentar lo siguiente.
El aparato digestivo de los cocodrilos, adaptado para ingerir una gran variedad de presas es una adaptación de tipo evolutivo morfológico.
Esto significa que a través de los años, la evolución de los cocodrilos los ha llevado a ajustar sus órganos, tal y como es el caso del aparato digestivo.
Esta capacidad de adaptación es una de las tantas maravillas de la naturaleza que permite la adaptación de los organismos de los animales a las necesidades que tienen y los hábitats donde viven, para que puedan sobrevivir cazando los tipos de animales que comen para poder sobrevivir en sus estados naturales.
Hello beautiful people on this earth.... I need some help asap please and thank you! :)
How many subunits are in ribosomes??
Answer:
2 subunits
Explanation:
*EXTRA POINTS* what should be done with the two forces to find the net force? 29 N→⬛ 48N ← *
how
can it be proved that leaves
prepare food? Describe experiment.
pls help i need answer asap! The digestive system is a group of organs working together to convert food into energy and basic nutrients that are transported throughout the body. Food passes through a long tube inside the body known as the alimentary canal, made up of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. Once food is chewed, the bolus is moved into the stomach for further digestion. Examine the Interconnections chart and select the body system that is responsible for moving the food from the start to the finish of the digestive system.
A) nervous system
B) muscular system
C) integumentary system
D) cardiovascular system
Answer:
B) Muscular system
If your parents are the P generation, what generation are you?
Answer:gen z
Explanation:
which major processess were needed for the origin of life on earth
Organic molecules produced from spontaneous synthesis or from meteorites
Color coat for roan cows (RW) shows codominance. A cow with a white coat has WW as its genotype. A cow with a red coat has RR as its genotype. A roan cow (RW) is crossed with another roan cow (RW), what fraction of the offspring will be white (WW)?
Answer:
1/4
Explanation:
Genotype
YYPP
YyPP
yyPP
|YYPP
ҮyPp
ууРp
YYpp
Yypp
Уурр
phenotype:
Answer:
You named the list for the genotype but not for the phenotype
HELP!!! 50PTS!!! AND WILL BE MARKED BRAINLIEST!!!
Which of the following best describes biochemical evidence that would not support the modern concept of evolution? (4 points)
A bacterium that uses inorganic materials to produce energy
An organism that does not undergo cellular respiration
A species of bacteria that is capable of photosynthesis
An organism that undergoes both aerobic and anaerobic respiration
Answer:
I also think correct answer is a.
Answer:
a bacterium that uses inorganic materials to produce energy
Explanation:
3. When you are fasting for this month, what does your body do at night after you've eaten?
Answer:yo dada
Explanation:yo mama
2. Which tissue makes up the husk of coconut?
Answer:
Sclerenchymatous tissue6. Which hamsters are the parents of the mystery hamster? Include evidence to prove that they are the correct parents. plzz give me the anser ill give the brainliest
Answer:
Test 3
Explanation:
Im working on the same assignment with the same question for online school and when it asked me that question i clicked test 3 and it said correct :)
What would you do if you turned into a pickle?
Which portion of a flowering plant absorbs water and minerals? *
A. stem
B. blade
C. root
D. flower
Answer: c
Explanation:
the roots absorb water and minerals from the soil and anchor the plant in the ground.
4. Explain why the cave appears black.
Answer:
Caves normally apear black. Yes, this is because in a cave there are no natural sunlight or lights in a cave. For example, If your room was all dark it would look black...yes. Same with a cave! It will appear black as well. So, as you can see, Caves appear black because it is so very dark inside no lights nothing. So that is why it looks black.
Explanation:
Hope this helps!
None of this is copied or pasted!
Have a great day!!!
-Lea.
if you have the gene for hemophilia, will you always have hemophilia?
Answer:
most likely
Explanation:
Explain the role of aquaporins in the rapid movement of water through some cells
Answer:
In the early 1990s, aquaporins were discovered, and it was found that they can selectively control water movement into and out of cells. One of the critical functions of aquaporins is that while they allow the passage of water they prevent the passage of ions.