Describe how Stella’s view of these plant cells and their parts changed as she transitioned through the three levels of magnification. Be sure to identify at least one cell structure or part of the leaf cells in your description.
Answers
Answer:
From lower to higher level of magnification, the stella's view about plant cells.
Explanation:
At lower magnification, the structure of plant cell is not clear by stella but with the increase of magnification, the cell structure becomes enlarge and clearly seen different structures of plant cell by the individual. The boundary of plant cell is known as epidermis. The upper boundary of plant cell is upper epidermis and the lower boundary of plant cell is lower epidermis.
Related Questions
Ture or false proofs of the Resurrection are few
Answers
Answer:
False
Explanation:
There are many documents and records of the Resurrection. In addition, there were also many eye witnesses because Jesus appeared to many after his Resurrection.
I will give the brainiest
The brain sends messages
to the muscles through the
A)motor nerves.
B)eyes.
C)blood vessels.
Answers
The radius of the Crab Nebula is approximately 5.225 × 1013 kilometers. Use the conversion factor 1 light-year = 9.5 × 1012 kilometers to find the radius in light-years.
Answers
Answer:
Using the above conversion
9.5 x 10 ^12kilometers = 1 light year
Therefore 5.225 x 10^13 will be
5.225 x 10^13/ 9.5 × 10^12 × 1 light year
= 5.5 light years
The radius of the Crab Nebula is
5.5 light years.
Hope this helps
Answer:
Plato says 5.5 ly
which phrase is a result of a scientific law
Answers
Answer:
Archimedes' Principle of Buoyancy.
Hooke's Law of Elasticity.
Bernoulli's Law of Fluid Dynamics (Bernoulli's Principle)
Dalton's Law of Partial Pressures.
Fourier's Law of Heat Conduction.
Explanation:
help needed How skin is involved in homeostasis? Explain with the help of examples.
Answers
Answer:
am not sure but i will find out later. Is that ok with u?
Explanation:
Most earthquakes happen:
1) in a ring around the Atlantic Ocean
2) near regions with no subduction
3) near active margins
4) in the middle of the continents
Answers
Answer:
in the middle of continents
Explanation:
Answer:
near active margins
Explanation:
What industry was created when people suddenly had more time and money available?
Answers
Which statement gives one reason that watershed protection programs are needed in Virginia
Ecosystems need to be controlled
Foods must be prevented
Dams can be damaged and may require repair
Wildlife can ruin water source when building habitats
Answers
Answer:
Dams can be damaged and may require repair
Explanation:
This is imperative to provide needed supports and maintenance for the aging dams,with capacity of up to 11,000. This dams were created as far back as 1948.Therefore the programme was geared towards effective re-habitation for maximum efficiency.
This repair programmes was termed Dam Rehabilitation Programme.And the secretary of Agriculture was given the authority to ensure effective execution of the programme.
In the state of Virginia,a total of 150 dams were part of the government landscape through the rehabilitation programme, and 11 of these have been well studied. .Todd Lake,Robinson Hallow, Lake Barton are some of these examples.
Answer:
the answer is c
Explanation:
why is not recommended to use antibiotics often
Answers
Answer: It may cause the bacteria to become resistant to them and one they are resistant then the antibiotics are ineffective against the bacteria. It is then more dangerous since new antibiotics will need time.
Explanation:
Explanation:
If you take antibiotics for the wrong reason(s) or if you take them too often it can change bacteria so much, that antibiotics have a reduced effectiveness against them, or stop working against them all together.
The so called "bacterial resistance" or "antibiotic resistance" is a real thread to humans. Some bacteria have turned out to be resistant to even the most powerful antibiotics available. Antibiotic resistance is a growing problem.
Suppose you get infected with such resident bacteria, it means there is no longer an effective treatment by using antibiotics.
*EXTRA*
If left "un treated", the bacteria can grow, more or less, with unlimited exponential growth. In such scenarios, any "simple" bacterial infection, could turn out to be fatal.
Often the biggest problem is the lack of time to find out exactly what type of bacteria is making the patient ill. Because there are so many different bacteria, it is impossible to tell what is the right one without deduction and, that takes time (to grow visible cultures in the laboratory). Sometimes a patient might be already critically ill, in such cases, the doctor would want to start the treatment immediately, which could mean they HAVE TO start admitting a broad-spectrum antibiotic, to hopefully battle that group of different bacteria, which hopefully included the one that is making the patient ill. But if that specific bacteria turns out to be resestant, then that poses a very serious problem. Possible a fatal one, since the time is up, and the bacteria keep growing in numbers, roughly doubling in numbers every hour...
Question 24 of 30
1 Point
In 1953, Stanley Miller and Harold Urey built a model of Earth's early
atmosphere by mixing gases that were thought to have been there. They
exposed the gases to an electric current to simulate lightning. The liquid that
condensed during the experiment contained amino acids.
What was the significance of their results?
O A. Miller and Urey proved the theory of spontaneous generation.
B. Miller and Urey proved that all life evolved from a single common
ancestor.
C. Miller and Urey proved that lightning was necessary for life to form
on Earth
O
D. Miller and Urey proved that biological molecules could have
formed in a similar way.
Answers
The essence of the experiment was that it showed that biological molecules could have formed in a similar way.
What was the experiment of Miller and Urey?The experiments of Miller and Urey were the first step in trying to prove the idea tat life originated from simple biological molecules.
Though the life forms did not form from the gases that were used, but the biological molecules did form. Thus, the essence of the experiment was that it showed that biological molecules could have formed in a similar way.
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what is a function of a protein macromolecule
Answers
Answer:
A function of a protein macromolecule is: Moving things in and out of cells. Transporting other molecules in the body. Protein macromolecule makes up the connective tissue in tendons. Moves things in and out of cells.
Explanation:
Answer:
move things in and out of the cell
Explanation:
move things in and out of the cell
Which class of biomolecule do the molecules in the table belong to? A. proteins B. carbohydrates C. nucleic acids D. lipids
Answers
Answer:I can't see any table but I will tell you everything about protein molecules and the rest.
protein belongs to the table of amino acids .
carbohydrates belong to the table of sugar.
nucleic acids belong to the table of nucleotides.
lipids belong to the table of fatty acids and glycerol.
Explanation:
Protein belongs to the table of amino acids, carbohydrates belong to the table of sugar, nucleic acids belong to the table of nucleotides and lipids belong to the table of fatty acids and glycerol.
Which class of biomolecule do the molecules in the table belong to?Amino acids combine together to form protein, glucose combine together to form carbohydrates, Nucleotides combine together to form nucleic acids, fatty acids and glycerol combine together to form lipids.
So we can conclude that Protein belongs to the table of amino acids, carbohydrates belong to the table of sugar, nucleic acids belong to the table of nucleotides and lipids belong to the table of fatty acids and glycerol.
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Classify the organisms based on how they obtain food
Answers
Answer:
Tipos de Nutrición
- Autótrofa: Sintetiza sustancias orgánicas a partir de sustancias inorgánicas simples, como las plantas.
- Heterótrofa: Los que necesitan alimentos procedentes de otros seres vivos, como los animales. ...
- Herbívoros. Son los que se alimentan de plantas. ...
- Carnívoros. ...
- Omnívoros. ...
- Filtradores. ...
- Decomponedores
Explanation:
Answer:
Autotroph: Sunny fields, Carrots, ...the sea algea(or whatever that is)
Heterotroph: Tiger, Human, Deer
Explanation:
I got it right
hope this helps :)
what are the two main a biotic factor that affect organisms in a marine ecosystem
Answers
Answer:
one of these a or b i know that much
Explanation:
my bad
Answer:the answer will be ----------- B oxygen level and water temperature
Explanation:
njsdnjcnjncds just know ;)
a person who is more than 2o percent heavier than the average person of the same sex and height is said to be
Answers
Answer:
overwieght
Explanation:
In which life stage can butterflies reproduce?
Answers
Answer:
Explanation:
All butterflies have "complete metamorphosis." To grow into an adult they go through 4 stages: egg, larva, pupa and adult. Each stage has a different goal - for instance, caterpillars need to eat a lot, and adults need to reproduce.
Which two planets have 53 moons? 1)Earth and Mercury 2)Jupiter and Saturn 3)Mercury and Mars 4) Neptune and Jupiter
Answers
Answer:
Jupiter and Saturn
Explanation:
Answer:
Saturn and Jupiter
Explanation:
Saturn has 82 moons, but 53 officially named
Jupiter has 79 moons, but 53 officially names.
Other than this, no other have exactly 53 in any way.
Hope this helps
One of the most important factors in the rapid spread and dispersal of zoonotic diseases in the modern world is : a. increased demand for meat b. improved transportation including high-speed rail and air lines c. wind dispersal d. none of the above
Answers
Answer:
a. increased demand for meat
Explanation:
Zoonotic diseases refers to those diseases that are transferred to human host from an animal carrier. Zoonotic diseases can be transmitted when a living host is bitten by an animal or insect, eats a contaminated food and more. Examples of zoonotic diseases are; rabies, bird flu, anthrax, ebola etc.
Among the causes of zoonotic diseases, one of the most significant factors in the rapid spread and dispersal of zoonotic diseases in this modern world is the increase in demand for meat. Considering that eating contaminated and infected food from an animal can transfer the disease, an increase in demand for meat is one factor to look into regarding why zoonotic diseases are proliferating.
What is the primary reaction during nuclear fusion to stars?
Answers
Major difference between messaging via the nerves and hormones
Answers
Answer:
the nerves produce immediate but short-living responses while hormo nes produce slow but short-living responses
Explanation:
i hope this will help you
A limestone bed containing fossils that are 550 million years old is ____ a bed of sandstone containing fossils that are 400 million years old. a. younger than c. older than b. the same age as d. not related to Please select the best answer from the choices provided A B C D
Answers
A limestone bed constituting fossils 550 million years old is older than a sandstone bed containing fossils 400 million years old. The correct option is c.
What is sandstone?Sandstone is a sedimentary rock that is sometimes mostly composed of quartz sand, but it could also contain substantial amounts of feldspar, silt, and clay.
A limestone bed comprising fossils dating back 550 million years is older than a sandstone bed containing fossils dating back 400 million years.
Thus, the correct option is c i.e., older than.
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what is the importance of regulating gene expression
Answers
Answer:
Regulated gene expression is crucial to the proper growth & survival of an organism and cannot be over-emphasized. Without it, the genetic code of a chromosome is the equivalent of a computer data file without the appropriate application to run it.
Carly has wavy hair. Her father has straight hair, and her mother has curly hair. Which type of inheritance pattern is responsible for Carly’s wavy hair?
A.
codominance
B.
dominant
C.
incomplete dominance
D.
polygenic
E.
recessive
Answers
Answer:
Incomplete Dominance
Explanation:
What is the number of this particle in a phosphorus atom?
Ap ex
Answers
Answer:
Fósforo
Símbolo P, número atómico 15, peso atómico 30.9738. El fósforo forma la base de gran número de compuestos, de los cuales los más importantes son los fosfatos. En todas las formas de vida, los fosfatos desempeñan un papel esencial en los procesos de transferencia de energía, como el metabolismo, la fotosíntesis, la función nerviosa y la acción muscular. Los ácidos nucleicos, que entre otras cosas forman el material hereditario (los cromosomas), son fosfatos, así como cierto número de coenzimas. Los esqueletos de los animales están formados por fosfato de calcio.
Cerca de tres cuartas partes del fósforo total (en todas sus formas químicas) se emplean en Estados Unidos como fertilizantes. Otras aplicaciones importantes son como relleno de detergentes, nutrientes suplementarios en alimentos para animales, ablandadores de agua, aditivos para alimentos y fármacos, agentes de revestimiento en el tratamiento de superficies metálicas, aditivos en metalurgia, plastificantes, insecticidas y aditivos de productos petroleros.
De casi 200 fosfatos minerales diferentes, sólo uno, la fluoropatita, Ca5F(PO4)3, se extrae esencialmente de grandes depósitos secundarios originados en los huesos de animales y que se hallan en el fondo de mares prehistóricos, y de los guanos depositados sobre rocas antiguas.
La investigación de la química del fósforo indica que pueden existir tantos compuestos basados en el fósforo como los de carbono. En química orgánica se acostumbra agrupar varios compuestos químicos dentro de familias llamadas series homólogas.
Esto también puede hacerse en la química de los compuestos de fósforo, aunque muchas familias están incompletas. La familia mejor conocida de estos compuestos es el grupo de cadenas de fosfatos. Las sales de fosfatos constan de cationes, como el sodio, junto con cadenas de aniones, como (PnO3n+1)(n+2)-, que pueden tener de 1 a 1 000 000 de átomos de fósforo por anión.
Los fosfatos se basan en átomos de fósforo rodeados en una disposición tetraédrica por átomos de oxígeno, el miembro más pequeño de la familia es el anión simple PO3-4 (el ion ortofosfato). La familia de las cadenas de fosfato se basa en hileras alternadas de átomos de fósforo y oxígeno en que cada átomo de fósforo permanece en el centro de un tetraedro de cuatro átomos de oxígeno. Hay también una familia estrechamente relacionada de fosfatos cíclicos.
Una característica estructural interesante de muchos de los compuestos del fósforo conocidos es la formación de estructuras tipo jaula. Ejemplos de estas moléculas son el fósforo blanco, P4, y uno de los pentóxidos de fósforo, P4O10. Las estructuras tipo red son comunes; por ejemplo, los cristales de fósforo negro en que los átomos están enlazados unos con otros.
En la mayor parte de sus compuestos, el fósforo está enlazado químicamente a cuatro átomos inmediatos. Hay gran número de compuestos en los que uno de los cuatro átomos está ausente y en su lugar hay un par de electrones no compartidos.
Hay también unos cuantos compuestos con cinco o seis átomos unidos al fósforo; son muy reactivos y tienden a ser inestables. Durante los años 60 y 70, se prepararon muchos compuestos orgánicos de fósforo. La mayor parte de estas estructuras químicas incluye tres o cuatro átomos enlazados al fósforo, pero existen también estructuras con dos, cinco o seis átomos unidos a cada átomo de fósforo.
Casi todo el fósforo utilizado en el comercio está en forma de fosfatos. La mayor parte de los fertilizantes fosfatados constan de ortofosfato diácido de calcio u otofosfato ácido de calcio muy impuros, Ca(H2PO4)2 y CaHPO4. Estos fosfatos son sales del ácido ortofosfórico.
El compuesto de fósforo de mayor importancia biológica es el adenosintrifosfato (ATP), que es un éster de la sal, el tripolifosfato de sodio, muy utilizado en detergentes y ablandadores de agua. Casi todas las reacciones en el metabolismo y la fotosíntesis requieren la hidrólisis de este tripolifosfato hasta su derivado pirofosfato, llamado adenosindifosfato (ADP).
Efectos del Fósforo sobre la salud
El Fósforo puede ser encontrado en el ambiente más comúnmente como fosfato. Los fosfatos son substancias importantes en el cuerpo de los humanos porque ellas son parte del material de ADN y tienen parte en la distribósforo que es conocida. Cuando el fósforo blanco ocurre en la naturaleza este puede ser un peligro serio para nuestra salud. El fósforo blanco es extremadamente venenoso y en muchos casos la exposición a él será fatal. En la mayoría de los casos la gente que muere por fósforo blanco ha sido por tragar accidentalmente veneno de rata. Antes de que la gente muera por exposición al fósforo blanco ellos a menudo experimentan náuseas, convulciones en el estómago y desfallecimiento. El fósforo blanco puede causar quemaduras en la piel, dañar el hígado, corazón y riñones.
Efectos ambientales del Fósforo
Answer:
Name: Phosphorus
Symbol: P
Atomic Number: 15
Atomic Mass: 30.974 atomic mass units
Number of Protons: 15
Number of Neutrons: 16
Number of Electrons: 15
Melting Point: 44.1° C
Boiling Point: 280.0° C
Density: 1.82 grams per cubic centimeter
Normal Phase: Solid
Family: Nonmetals
Period: 3
Cost: $4 per 100 grams
Origin of Name From Greek words phos, meaning light and phoros meaning bearer
Date and Place of Discovery In 1669 in Germany
Discovered by Hennig Brand
Explanation:
what happens to meristem when ot looses its abilty to divide
Answers
Answer:
The meristematic cells mature, get differentiated, loose their ability to divide and finally get converted into permanent tissues
Explanation:
1 2 3 4 5 6 7 8 9 10
TIME REMAINING
52:11
Environmental factors can influence natural selection because they can increase or decrease
the number of chromosomes in an individual.
the number of chromosomes in a population.
the amount of genetic variation in an individual.
the amount of genetic variation in a population.
Answers
Answer:
49 sec
because you have never seemed yet 59 hour instead 12 hour.
but 24 hour also.
What does Electronegativity mean in regards to
elements? How does electronegativity influence the
molecule's chemical property?
Help :(
Answers
Answer:
it is the ability of attracting other molecules this effect the properties by what it is going to bond to. like say it is 6 and another 2 they will be more likely too bond to one another to make a valence of 8.
Explanation:
If there is a high death rate and large amount of _______,
populations will likely decrease
Answers
Answer:
emigration
Explanation:
How do animals get rid of excessive nitrogen?
Answers
Answer:
Animals get rid of nitrogen by converting it int urea uric, acid and ammonia.
Explanation:
Answer:
adding c02
Explanation:
What are the different types of vitamins needed by our body?
Answers
Answer:
The 13 essential vitamins your body needs are vitamins.
Explanation:
A, C, D, E, K and the B vitamins: thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyroxidine (B6), biotin (B7), folate (B9) and cobalamin (B12). The four fat-soluble vitamins—A, D, E, and K—are stored in the body's fatty tissues.
Please mark me as Brainliest
Answer:
acdebk
b1 ribovlavin
b2 niacin
b3 panthotenc
b5 pyroxidine
b6 biotine
b7 folate
b9 cobalamin
ADEK are stored in bodies fatt tissue and they're four fat soubl vitamins