Answer:
double-stranded RNA; silencing
Explanation:
The RNAi mechanism is a natural process of gene silencing triggered by different small non-coding RNAs such as, for example, siRNAs, miRNAs and piRNAs. RNAi is a powerful technique to induce gene silencing in a sequence-specific manner. The delivery of exogenous double-stranded RNAs (dsRNAs) can be used to induce this evolutionarily conserved mechanism. The dsRNAs first bind to RNAi core components (Ago, Piwi proteins) and then target complementary mRNAs to induce their degradation.
Explain why the legs of cats and grasshoppers are considered analogous.
2. Explain why the legs of cats and flippers of whales are considered homologous.
3. Explain how this diagram shows that cats and whales are more closely related than either is to an insect.
Answer:
2)Homologous Structures Humans Share With Animals
A dolphin's flipper, a bird's wing, a cat's leg, and a human arm are considered homologous structures. ... This structure serves as evidence of having a common ancestor, one that would have had a tail. All mammals share the homologous structure of the vertebrae in common.
3)WHERE IS THE DIAGRAM
Explanation:
The union of a sperm and an egg during the life cycle of a jellyfish is best described as
a
b
ОООО
sexual reproduction
genetic inheritance.
asexual reproduction,
genetic engineering,
d
Answer:
Sexual reproduction and asexual reproduction
Explanation:
this is because the jellyfish takes on two different body forms that is medusa and polyps. polyps produce asexually by budding while medusa pawn eggs and sperm to produce sexually
What causes changes in cells?
Answer:
their are two electric and body cells which is body building blocks of life which
1. Which of these decreases as we
move from summer to winter?
O the amount of photosynthesis
occuring
O vegetation
O food supplies
all of these
Answer:
I believe the answer is All of them. But I'm not 100% sure.
Name two cell structures plant cells have that animals do not have and one structure that looks very different in a plant and animal cell (think size).
Answer:
Plant cells have a cell wall and chloroplasts and the cell wall gives the cell a rectangular shape unlike animal cells which have a round shape because we only have a cell membrane.
Answer:
plant cells have a cell wall . animals do not have and one structure that looks very different in a plant and animal cell
Explanation:
three complex carbohydrates, the subunits of glucose are bonded together differently. Because they have different structures, they most likely-
a- from different proteins
b- carry different nucleotides
c- contain different chemical elements
d- perform different functions
Most fossils are dug up from sedimentary rock layers. Small pieces of an animal's remains become squeezed between the layers of this sediment. Over long periods of time, they are buried under more and more layers of sediment that piles up on top of it.
True or False?
CAN SOMEONE PLEASE HELP MEE !!!!!! This is my second time posting this I really need your help.
The graph represents the outcome of natural selection in a population of Darwin's finches. Which statement best describes this outcome?
A) Finches that are best suited to survive and reproduce (points 1 and 3) are more likely to pass on beneficial traits to their offspring; those less suited (point 2) fail to pass on their traits to their offspring.
B) Finches that are least suited to survive and reproduce (points 1 and 3) are more likely to pass on beneficial traits to their offspring; those more suited (point 2) fail to pass on their traits to their offspring.
C) Finches that are best suited to survive and reproduce (point 2) are more likely to pass on beneficial traits to their offspring; those less suited (points 1 and 3) fail to pass on their traits to their offspring.
D) Finches that are least suited to survive and reproduce (point 2) are more likely to pass on beneficial traits to their offspring; those more suited (points 1 and 3) fail to pass on their traits to their offspring.
Answer:
B) Finches that are least suited to survive and reproduce (points 1 and 3) are more likely to pass on beneficial traits to their offspring; those more suited (point 2) fail to pass on their traits to their offspring.
Explanation:
I think . If it is wrong I am truly sorry.
A phagocytic cell engulfs a bacterium. This process is known as....
A endoplasmosis
B exocytosis
C passive transport
D endocytosis
Answer:
D endocytosis
Explanation:
I just found it it's called phagocytosis which is a process of endocytosis
- Lee el siguiente párrafo y a continuación responde lo que se te pide.Los seres humanos primitivos comenzaron a clasificar las plantas y los animales tanto por su utilidad como por el daño que les causaban, luego fueron profundizando aún más en sus conocimientos sobre la flora y la fauna de su entorno, identificando los ciclos biológicos y hábitat, entre otros aspectos que facilitaron su producción y pronta disponibilidad. Con base en el párrafo anterior se puede afirmar que: * 1 punto A) Empezaron a entablar una relación más estrecha con el medio ambiente. B) Abandonaron su vida primitiva y nómada C) Incrementaron sus conocimientos únicamente sobre el ciclo del agua. D) Empezaron la agricultura y la piscicultura.
Answer:
A) Empezaron a entablar una relación más estrecha con el medio ambiente.
Explanation:
Desde el pasaje, podemos ver que la gente comenzó a prestar más atención a su entorno y cómo la fauna y la flora afectan la vida humana.
Incluso intentaron desarrollar un sistema burdo de clasificación biológica. Henec, se puede inferir que las personas desarrollaron una relación más cercana con su entorno.
the light-collecting units of a chloroplast are the
Answer:
Thylakoids
Explanation:
proteins in the thylakoid membrane organize chlorophyll and other pigments into clusters known as photosystems. And are the light-collecting units of the chlorophast.
I WILL GIVE BRAINLIEST Using the information above and details from your research, write a paragraph of five sentences or more explaining how microwaves uses the behavior and characteristics of the electromagnetic wave to function.
Answer:
A microwave uses the behavior and characteristics of the electromagnetic wave to function. A microwave is an electromagnetic wave with a quite long wavelength and low frequency. Microwaves are often called radio waves, but they have higher frequencies than other radio waves. With higher frequencies, they also have more energy. That's why microwaves are useful for heating food in microwave ovens.
Explanation:
Boom, drop the mic.
HELP!!!!15 POINTS!!!!!!
i think it's f but idk..
Answer:
F is good
Explanation:
what are the functions of the White blood cells in the body
Answer:
2 protect ur body
Explanation:
Answer:
2 protect your body from deseses
Numerous atp and naphtha are produced during light reaction why
Answer: cracking of naphtha. It is important to ensure that the feedstock does not crack to form carbon, which is normally formed at this temperature. This is avoided by passing the gaseous feedstock very quickly and at very low pressure through the pipes which run through the furnace Shale naphtha is obtained by the distillation of oil produced from bituminous shale by destructive distillation. Petroleum naphtha is a name used primarily in the United States for petroleum distillate containing principally aliphatic hydrocarbons and boiling higher than gasoline and lower than kerosene.
Explanation: Light naphtha can refer to either a finished product used as a petrochemical feedstock or a distillation cut commonly called light straight run naphtha. It is composed of pentane and slightly heavier material. In a refinery, light naphtha is often blended directly into gasoline.
Which of these statements are true about physical medicine? Check all of the boxes that apply.
Physical medicine treats heart disease.
A common subspecialty of physical medicine is geriatric care.
Physiatrists operate on joints such as the knee and ankle.
Physiatrists recommend and fit leg braces.
Answer:
Physiatrists operate on joints such as the knee and ankle.
A common subspecialty of physical medicine is geriatric care.
Physiatrists recommend and fit leg braces.
Explanation:
Physiatrists treat a variety of medical conditions that affecting the brain, spinal cord, nerves, bones, joints, ligaments, muscles, and tendons etc. Physiatrists main aims to enhance and restore the functional ability of muscles and organs of those people who passes through physical impairments or disabilities. With this physical medicine people live a long and healthy life.
Answer:
2 and 4
Explanation:
Got it right edg
I'll give you a brainliest if is right or at least shows some effort
(thanks & i hope your having a good day)
In your own words, explain how stalagmites are formed in caves.
Explanation:
As the redeposited minerals build up after countless water drops, a stalactite is formed. If the water that drops to the floor of the cave still has some dissolved calcite in it, it can deposit more dissolved calcite there, forming a stalagmite. Speleothems form at varying rates as calcite crystals build up.Transcribe the strand of DNA CTA AGG TAG
A scientist discovers a new type of eukaryotic cell that does not contain mitochondria. As a result of this difference, the scientist predicts that the cell is most likely to be different from other eukaryotic cells in which way? A.In the way it releases energy from food molecules B.In the way it maintains homeostasis with its environment C.In the way it reproduces D.In the way it evolves
Answer:
A. In the way it releases energy from food molecules
Explanation:
This is because, the mitochondria is the part of the cell that produces energy from food molecules. Since this cell does not contain a mitochondria, it will thus affect the way it releases energy from food molecules.
4. Choose the microscopy technique that would best fit the needs of each scenario.
Scenario 1: Scientists are attempting to identify the specific type of leukemia a person has based on cell surface structures. ___
Scenario 2: Researchers are studying chemotaxis in white blood cells. Chemotaxis is the movement of living cells in response to a particular substance. ___
Scenario 3: Cell biologists are interested in measuring the distance between the inner and outer nuclear membranes, and need an instrument capable of producing images where the tiny distance between these two membranes is clear. __
Answer: Scenario 1: SEM
Scenario 2: Light
Scenario 3: TEM
Explanation:
The technique applied to observe and analyze objects that cannot be seen with the bared eye is called the microscopic technique.
1. The technique used will be SEM. A scanning electron microscope (SEM) is used to generate an image on the individual surface with the help of electron lasers.
It is useful in apprehending cell surface fabrication and topography.Therefore, to study the cell surface structure of leukaemia SEM is best.2. The light microscopy technique can be applied to study chemotaxis.
When there will be a movement in the living cell due to response towards chemical then the light microscope can be used to visualise the cells.Therefore to study chemotaxis light microscopy should be employed.3. The transmission electron microscope (TEM) method can be used to know the gap between the inner and outer layers. They are used for observing very thin segments of specimens.
Through the thin fragments, the electron flows easily and the image is produced.Therefore, TEM should be used by scientists to measure the distances.To learn more about the microscopy techniques follow the link:
https://brainly.com/question/5205839
will yall please help me (agriculture)
How is the changing environmental quality posing a challenge to agricultural industries?
Soil polluted with heavy metals causes crops to grow more quickly.
Higher birth rates in livestock are due to land pollution.
Water and land pollution make it more difficult to grow healthy crops and livestock.
Droughts cause more people to move to rural areas.
Answer:
Agricultural activities that cause NPS pollution include poorly located or managed animal feeding operations; overgrazing; plowing too often or at the wrong time; and improper, excessive, or poorly timed application of pesticides, irrigation water, and fertilizer. Industrial farming practices, such as monocropping and intensive tillage, have also compromised soil health over time. ... Excessive fertilizer use can also cause a buildup of salts in soil, heavy metal contamination and accumulation of nitrate (which is a source of water pollution and also harmful to humans
Explanation:
However agriculture is both cause and victim of water pollution. It is a cause through its discharge of pollutants and sediment to surface and/or groundwater, through net loss of soil by poor agricultural practices, and through salinization and waterlogging of irrigated land.
Which of the following are examples of autotrophs/ producers? Select all that apply,
Birds
Trees
Algae
Cactus
Deer
A male cardinal’s red color is an example of a trait affected by natural selection. The females of the species choose mates based on the vibrant colors of the males’ feathers. If females begin using different criteria than feather color when they choose mates, what would most likely happen to the color of the male cardinals over time?
increased variation in the shades of red because there is no advantage in one specific color
increased variation in the shades of red because the cardinals try different ways to impress the females
decreased variation in the shades of red over time because no form of the trait is advantageous
decreased variation in the shades of red after a single generation
Answer:
decreased variation in the shades of red over time because no form of the trait is advantageous
Explanation:
If the vibrant red feathers are no longer used to attract mates, then it is no longer useful to the males, so it will cease to exist.
Answer:
C. decreased variation in the shades of red over time because no form of the trait is advantageous
Help please anyone please!!!!
Answer:
The answer is A Carrying capacity.
Explanation:
A plant cell has a 5%, percent salt concentration. It is placed into a solution
containing a 12%, percent salt concentration.
Explain what will happen to the cell and why?
Answer:
Water in cells moves toward the highest concentration of salt. ... If a higher concentration of salt is placed outside of the cell membrane, the water will leave the cell to bond with it. The loss of water from this movement causes plant cells to shrink and wilt.
Explanation:
How do the circulatory and respiratory systems deliver important
substances?
Answer:
Gas exchange between tissues and the blood is an essential function of the circulatory system. In humans, other mammals, and birds, blood absorbs oxygen and releases carbon dioxide in the lungs. Thus the circulatory and respiratory system, whose function is to obtain oxygen and discharge carbon dioxide, work in tandem.
Human blood consists of blood groups A, B, and O. However, there is one more blood group, AB, which contains alleles A and B in the same genotype. What is this phenomenon called?
A.
coinheritance
B.
codominance
C.
incomplete dominance
D.
polygenic inheritance
Answer:
B. codominance
Explanation:
because if the placement of the A and B molecules on each cell is controlled by the proteins that are coded by different versions of the same gene, then IA and IB are codominant but both are dominant to Io. If a person receives an IA allele and a IB allele, their blood type is type AB, in which characteristics of both A and B antigens are expressed.
What are renewable resources?Provide examples.
Answer:
Energy that comes from a natural "renewable" source or processes that are constantly replenished
Explanation:
Examples could be solar energy, wind energy and hydro energy. Each come from a natural resource.
Which of the following solutions would have solute concentration that is lower than the concentration found inside the cell
Answer:
hypotonic solution
A hypotonic solution has a lower solute concentration than inside the cell (the prefix hypo is Latin for under or below). The difference in concentration between the compartments causes water to enter the cell.
Thank you and please rate me as brainliest as it will help me to level up
Answer:
A. Hypotonic Solution
Can a
Brain cell
Fat cell
Muscle cell
Red blood cell
Liver cell
Convert one type of fuel molecule to another
answer: yes
exanation: