Answer:
Compounds of carbon. Compounds of carbon are defined as chemical substances containing carbon. More compounds of carbon exist than any other chemical element except for hydrogen. ... An important carbon property is catenation as the ability to form long carbon chains and rings.
Explanation:
yo need help ASAP!!!!
Answer:
B is the correct answer
Explanation:
After getting the slide and microscope ready, Stella is eager to see the microscopic pond water specimen! She crouches around her microscope and aligns her eye with the microscope’s eyepiece. But she's only able to see a bright white light. At this point, no specimens or cells are visible on Stella's pond water slide. After taking a moment to collect her thoughts, Stella realizes she can't see any lifeforms because a.there are no specimens on the slide b.the microscope is not plugged in. c.she hasn't fastened the slide to the stage. d.the microscope is not yet in focus
Copied but correct answer.
Answer: C (She hasn't fastened the slide to the stage
Explanation:
In Microscopy even if the slide is not yet in focus,she will be able to see part of the slide which may appear as transparent image.Therefore this is a wrong answer.
If the microscope is not plugged it light can not come up.
If there are no specimen on the slide,the slide will still as transparent image at the focus.
No doubt Stella forgot to fasten the slide to the stage.,therefore the specimen on the slide was not in focus of the objective lens,rather she was focusing on the stage only,hence the visible white light.
Stella can not able to see any life forms in the microscope because she hasn't fastened the slide to the stage. Thus, the correct option is C.
What is Microscope?A Microscope may be defined as an instrument that constructs an enlarged image or view of a small object, thus illustrating details too small to be seen by the unaided eye.
If the microscope is not plugged in, Stella will not able to see even white light. If the microscope is not in focus, then Stella is able to see a transparent sheet of fil under it. No specimens also provide a transparent appearance.
But a view of white light indicates that she hasn't fastened the slide to the stage.
Thus, the correct option is C.
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which part of earth belongs to the geo sphere?
A) air
B) plants
C) minerals
D) water
Answer:
Minerals are part of earth's geo sphere.
Which of the following proteins could be used to carry materials throughout the body
Answer:
Option B
Explanation:
This is a type of Ion channels protein receptor which are pore-forming membrane proteins that allow ions to pass through the channel pore.
They always span across the cell membrane allowing passage of ions across the membrane of the cells.
please answer me fast
dont keep wrong answers
Answer:
egg,fish,meat= protein
potato,maize ,barley,turnip= carbohydrates
ghee ,butter ,animal fat=fats
all vegetables and fruits = vitamins
calcium, magnesium, iodine=minerals
etc......
Which of the following is the best definition of a scientific theory?
A.
a broad, well-supported explanation of related observations or events
B.
a highly tentative statement about the natural world that is likely to be significantly changed or discarded
C.
a plausible answer to a scientific question that is used to guide research
D.
a description of a natural phenomenon that is always observed to occur under specific conditions
Answer:
B
Explanation:
noun. a coherent group of propositions formulated to explain a group of facts or phenomena in the natural world and repeatedly confirmed through experiment or observation: the scientific theory of evolution
Which of the following best describes fertile soil, precipitation, and sunlight?
A. Biotic factors in the grassland
B. Biotic factors in a forest
C. Abiotic factors in the grassland
D. Abiotic factors in a forest
Answer:
C. Abiotic factors in the grassland.
Explanation:
Sunlight, soil, and percipitation are all nonliving things, so they are abiotic. Sunlight, soil, and percipitation could be found in forrests or grasslands, but are usually found in grasslands.
Parents that are heterozygous for having freckles (dominant) are crossed. Which correctly describes their offspring?
what are the nutrients in pizza dough
protein, carbohydrates, fats and calcium. Grain (sometimes, but usually not, whole grain) is one of the primary ingredients in the crust. [via Google]
Which of the following liquids causes heartburn?
chyme
cecum
оооо
stomach acid
bile
Answer:
monitoring and avoiding triggers
Explanation:
such as alcohol, caffeine, spicy food, full cream milk, gassy foods, such as soft drinks, and acidic food, such as tomato, lemon, or orange juices. hope this helps you :)
where dose a fertilized egg attach
Answer:
The answer are given above in attachment.
if two species from the same kingdom met would they attack each other
Answer:
It is possible.
Explanation:
Let's take the Animalia Kingdom for example. You know that animals are prey and predator in the environment, and that there are food chains. Animals (carnivores or omnivores) do eat other animals to sustain their lives. It is entirely possible and plausible that 2 pieces from the same kingdom could attack each other.
DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?
A.
The amount of folic acid and DNA synthesized are both dependent variables.
B.
The amount of folic acid and DNA synthesized are both independent variables.
C.
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
D.
The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable.
E.
The amount of folic acid and DNA synthesized are neither dependent nor independent variables
Answer:
C
Explanation:
C:
Answer:
C
Explanation:
c
Which is a future NASA research project?
using a probe to collect data
conducting research from a space station
collecting samples on an asteroid
conducting a space mission with no people
Answer:
A. Using a probe to collect data
Explanation:
I think Hope it helps
Answer:
collecting samples on an asteroid
Explanation:
collecting samples on an asteroid
Just took the test and Got it right!
1) Indicar a qué nivel de organización de la materia corresponden las siguientes palabras (Ayuda: hay uno para cada uno, no se repiten) a- HIDRÓGENO b- JAURÍA c- EUCARIOTA d- SER HUMANO e- PROTÓN f- RESPIRATORIO g- SERES BIÓTICOS+ ABIÓTICOS Y SUS INTERRELACIONES h- MITOCONDRIA i- PULMÓN j- SER HUMANO +BANDADA+ PASTIZAL+ CARDUMEN k- EPITELIO l- H2O (agua) m- ESFERA DE VIDA
Respuesta y explicación:
e- PROTÓN - nivel subatómico, integrado por las partículas que componen los átomos: protones, neutrones y electrones.
a- HIDRÓGENO - nivel atómico, compuesto por átomos, que son partículas que interactúan con otras mediante reacciones químicas. Ejemplo: hidrógeno, oxígeno, carbono.
l- H2O (agua) - nivel molecular. El agua es una molécula que se forma gracias a la interacción entre dos átomos de Hidrógeno y uno de Oxígeno. Otros ejemplos de moléculas son: cloruro de sodio (NaCl) o el dióxido de carbono (CO2).
h- MITOCONDRIA - nivel de organelas celulares, compuesto por distintos orgánulos que se encuentran dentro de las células y llevan a cabo diferentes tareas, todas importantes para el correcto funcionamiento celular. Otros ejemplos de organelas son: retículo endoplasmático y lisosomas.
c- EUCARIOTA - nivel celular. Tanto las células eucariotas, que poseen núcleo y sistema de endomembranas, como las procariotas, que carecen de éstos recién mencionados, son los dos tipos de células presentes en los organismos vivos.
Los siguientes tres niveles sólo corresponden a organismos pluricelulares.
k- EPITELIO - nivel de tejidos. Los tejidos están compuestos por distintos tipos de células que trabajan juntas para llevar a cambio una función en específico, sea protección, transporte o contracción. Otros ejemplos de tejidos son el nervioso y el muscular.
i- PULMÓN - nivel de órganos. Los órganos están formados por distintos tejidos que convierten a estas estructuras en unidades funcionales de gran importancia para los seres vivos superiores. Otros ejemplos son: ojo y vejiga.
f- RESPIRATORIO - nivel de sistema de órganos. Los sistemas de órganos están integrados por diferentes órganos. Ejemplos de sistemas de órganos son: sistema digestivo y sistema reproductor.
d- SER HUMANO - nivel de organismo. Compuesto por todas las células, tejidos, órganos y sistemas que posea, en caso de ser pluricelular, o por la única célula que posean en caso de ser unicelulares. Otros ejemplos son: helicobacter pylori (bacteria), gallina, algas.
b- JAURÍA - nivel de población, se refiere a un conjunto de individuos de la misma especie, como podrían ser humanos, perros (jauría), o peces (cardumen).
j- SER HUMANO + BANDADA + PASTIZAL + CARDUMEN - nivel de comunidad o biocenosis. Este nivel está integrado por las distintas poblaciones que comparten un mismo entorno. Una comunidad de animales se la conoce como zoocenosis, mientras que una de vegetales se llamará fitocenosis.
g- SERES BIÓTICOS + ABIÓTICOS Y SUS INTERRELACIONES - nivel de ecosistema, integrado por todos los seres vivos (bióticos) e inertes (abióticos) que comparten un medio físico, y las relaciones entre estos.
m- ESFERA DE VIDA - nivel de biósfera, compuesto por todos los ecosistemas.
i. In which structure does photosynthesis take place? [2 marks] ii. Name the substance in chloroplasts which absorbs light. [2 marks] iii. Through which structure does carbon dioxide enter the diagram? [3 marks] iv. What role does sunlight play in photosynthesis? [3 marks]
Answer:
1. Photosynthesis takes place in the chloroplasts.
2. This substance is called chlorophyll.
3. Structure G (Stoma)
4. Sunlight provides energy (light energy) to the chloroplasts for photosynthesis to take place.
An organism is found that has the following traits:
• Has multicellular filaments
• Decomposes plants
• Lives in a moist environment
What kingdom does this organism most likely belong in?
O A. Animalia
O B. Plantae
O C. Protista
O D. Fungi
Answer:
D. Fungi
Explanation:
All of the traits listed relate to fungi.
A student is examining leaf cells. Which organelles are most likely to be missing from the cells?
Answer:
lysosomes
Explanation:
this is because lysosomes are found in animal cells and are rarely found in plant cells.
Answer:
lysosomes
Explanation:
i hope this helps :))
Two groups of tomatoes were grown under laboratory conditions, one with humus added to the soil (Group 1) and the other a control without humus (Group 2). The leaves of the plants grown without humus were yellowish (less green) compared with those of the plants grown in the humus-enriched soil. The best explanation for this difference is that the: Group of answer choices
Answer:
the humus contains the minerals necessary for chlorophyll synthesis
Explanation:
The yellowness of leaves in plants can be attributed to inadequate chlorophyll in the plant. The chlorophyll is responsible for the greenness appearance of the leaves of plants and when it is present in inadequate quantity, the leaves appear yellowish in color.
Some of the minerals necessary for the formation of chlorophyll include magnesium, nitrogen, and iron. It thus means that the humus supplied to the soil of group 1 plant has the necessary minerals to synthesize chlorophyll while the soil of group 2 plants is deficient in some or all the minerals required for chlorophyll synthesis.
What can you surmise from the labeled image? The genotype is heterozygous. White petal color is a recessive trait. White petal color is a dominant trait. The phenotype is heterozygous. Mark this and return
Answer:
White petal color is a recessive trait.
Explanation:
Further explanation is posted as an attached file due to technical difficulties.
Answer:
The answer to this question is B.)White petal color is a recessive trait.
Explanation:
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End of Semester Test: Biology with Virtual Labs A
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Select the correct answer.
Duplication in the gene encoding a protein Involved in vision has enabled humans to acquire trichromatic vision, which is the ability to
distinguish between red, green, and blue colors, which type of mutation is this?
OA.
somatic mutation
B.
Silent mutation
C. neutral mutation
D. harmful mutation
E. beneficial mutation
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Next
Answer:
E
Explanation:
A mutation that confers phenotypic benefits to individuals or a group of individuals would be considered a beneficial mutation.
Mutation involves a sudden change to the gene coding sequence of the DNA. It can occur as a result of substitution, duplication, deletion, inversion, insertion, etc of purine or pyrimidine bases of the DNA.
These changes can be harmful, beneficial, or neutral to individuals. Those that have neutral effects in individuals are also called silent mutations.
In the case of a duplication causing trichomatic vision in humans, it represents a form of beneficial mutation because it enables humans to be able to distinguish between red, green, and blue colors. The ability to distinguish among these colors improves the quality of life of humans.
Which of Charles Darwin’s main points is depicted in the image? Organisms within a population compete with each other to survive. Over time, beneficial variations will be passed on to future generations. More offspring are produced than can be supported by an environment. All organisms within a population have an equal chance for survival.
Answer:
A). Organisms within a population compete with each other to survive.
Explanation:
Charles Darwin in his evolution theory proposed that the organisms of all species emerge and develop via the 'natural selection' of tiny, inherited discrepancies and these disparities enhance the individual's ability to contest and compete with each other in order to survive and reproduce to continue their existence. This led to the emergence of the phrase 'survival of the fittest' which suggests that in this competition of 'natural selection', only the fittest will survive. Thus, option A is the correct answer.
Answer: a
Explanation:
The statement “force equals mass times acceleration (F=ma)” is Newton’s second law of motion. Why is this a law rather than a theory?
A-It states, rather than explains, the relationship between the variables.
B- .It cannot be proven, whereas a theory can be proven.
C-.It may be revised if new information shows that the relationship has changed.
D- It was classified as a law because it is related to other similar discoveries.
Answer: it’s A
Explanation:
Newton’s second law of motion is a law rather than a theory because: A. It states, rather than explains, the relationship between the variables.
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.
Mathematically, it is given by the formula;
[tex]Force = mass[/tex] × [tex]acceleration[/tex]
This ultimately implies that, Newton's Second Law of Motion is a law because rather than explain, it states the relationship between the three (3) variables;
Force.Acceleration.Mass.In conclusion, a law can be proven whereas a theory may be revised in the event that a new information shows that there is a change in relationship between the variables.
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Which best summarizes the concept of natural selection?
Answer:
The fittest organism survive and produce.
Where does the river deposit the most sediment?
O A. Where the water moves the fastest
B. Where the water has no kinetic energy
C. Where the water moves the slowest
D. Where the water has the greatest kinetic energy
Answer:C
Explanation:River deposit the most sediment along the inside bank of the river bend,this is where water flows the slowest.So,when water moves the slowest deposition occurs while when water moves the fastest erosion occurs.
The river deposit the most sediments where the water moves the slowest. The correct option is c.
What are sediments?Strong substances known as sediments settle at the bottom of a fluid. This might also be thought of as a naturally occurring substance that is disintegrated and moved by wind or water.
As a result of its shape, an irregularly shaped sediment would move at the slowest rate possible. The act of deposition is the settling of sediments within designated deposition basins.
The river deposits the most sediment along the inside bank of the river bend, this is where water flows the slowest. So, when water moves the slowest deposition occurs while when water moves the fastest erosion occurs.
Therefore, the correct option is c. Where the water moves the slowest.
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Louis Pasteur proved that all new cells come from preexisting ones. What
concept did Pasteur's experiments disprove?
A. Germ theory
B. Cell theory
C. Spontaneous generation
D. Virchow's postulates
Answer:
Virchow s postulates
.
Explanation:
The major difference between Earth and the other planets in our solar system is that _____.
Answer:
Earth is the only planet with liquid water readily avaible to and able to support living organisms.
Explanation:
Answer:
Earth has an atmosphere
Explanation:
Took the exam
In algae and plants, photosynthesis happens in the... vacuoles. mitochondria. chloroplasts. chromosomes.
Answer:
chloroplasts
Explanation:
edge 2022
Using the data you just reviewed, create a scientific argument of one to two paragraphs that support or oppose the current flu vaccine recommendations.
The flu vaccine is essential in our society and should be encouraged and financed whenever necessary. That's because, as we know, the flu is a disease of rapid proliferation and that imposes risks to the lives of some people. The vaccine has the ability to reduce the risk of a person being infected with the flu virus by 50%, this percentage is essential for people who are more sensitive to this virus such as the elderly, pregnant women and people with respiratory problems.
In addition, it is important that the manufacture and distribution of this vaccine is always financed, because the flu virus is a very changeable circle that is constantly changing and needs to be combated annually.
Answer:
Flu vaccinations are fundamental as they reduce the risk of flu illness by over 50%.
Explanation:
Flu vaccinations reduce the risk of flu illness by over 50%. This makes this process extremely important and fundamental for all human beings as they not only protect the person who gets the vaccine, but it also contributes to the prevention of spreading to other people, especially children and older adults who possess a greater risk of developing flu complications.
The antibodies that are produced by the vaccine prevent the flu virus from attaching to a healthy cell. However, if a person has not been vaccinated, the virus will attack the healthy cells because there is an absence of antibodies that prevent this process.
Describe how you would carry out sampling with a pitfall trap. State how you would reduce the risk of harm to capture organisms.
Answer:
Explanation:
Pitfall trapping is a sampling technique that is widely used to examine species ... Solutions such as formalin are used in wet pitfall traps because they preserve the ... stone or other object to keep out predators and prevent trapped animals from ... however, can pose a significant by-catch risk to small non-target vertebrates ...