Answer:
- Microscopio de Robert Hooke: Aumento de 30X; monocular; con soporte rudimentario; enfoque de objetos transparentes y opacos
- Microscopio óptico actual: más sofisticado, binocular; compuesto por tres sistemas: sistema mecánico, sistema óptico (hasta 1.500 aumentos 1500 X), y sistema de iluminación.
Explanation:
El microscopio óptico fue el primer microscopio y marcó una nueva era en la biología y la medicina, siendo fundamental para la observación de estructuras celulares y subcelulares, lo cual permitió el desarrollo de diversas teorías tales como, por ejemplo, la teoría celular. La característica más importante compartida por los microscopios ópticos es el uso de la luz visible para visualizar las muestras. Los microscopios ópticos rudimentarios fueron popularizados en el siglo XVII, a partir del uso de Galileo Galilei. Posteriormente, en 1665, el científico inglés Robert Hooke usó su microscopio mejorado para observar muestras biológicas. El microscopio de Hooke era monocular y aumentaba la imagen 30 veces (30X), tenía un mejor soporte que los microscopios anteriores más rudimentarios, y podía enfocar tanto objetos transparentes como opacos. Actualmente, los microscopios ópticos están compuestos por tres sistemas: 1-sistema mecánico compuesto por piezas (es decir, una base, platina y brazo) donde están insertadas las lentes, un 2-sistema óptico compuesto por diferentes lentes conocidas como lentes oculares (microscopios binoculares) y lentes objetivos, las cuales permiten el aumento de las imágenes hasta 1.500 (1500X, con uso de aceite de inmersión), y 3-un sistema de iluminación para reflejar, transmitir y regular la intensidad de la luz.
How do coral reef ecosystems demonstrate the ecological principles of shifting baselines, disturbance, succession, and sustainability?
Answer:
Explanation:
c
Answer:
Explanation:
Sorry, I answered the wrong question.
Find the volume of the cylinder to the nearest tenth 30 in 10 in
Answer:
9424.78 inches cubed
Explanation:
V=πr^2h
π*100*30
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Which of the following predictions about global climate change is directly related to an increase in the burning of fossil
fuels?
a increased extreme weather
b. decreased food supply
C. global warming
d. falling sea levels
Please select the best answer from the choices provided
Ο Α
B
С
D
Answer:
a increased extreme weather
The law of segregation explains that * alleles of a gene separate from each other during meiosis. different alleles of a gene can never be found in the same organism. each gene of an organism ends up in the same gamete. all of the above
Answer:
alleles of a gene separate from each other during meiosis.
Explanation:
Mendel observed that the F1 expressed only one of the alternative variants (in this case, only rounded seeds appeared), while the other variant (wrinkle) disappeared. Mendel named "dominant" the expressed variant. Mendel allowed auto pollination and observed that in the second generation, F2, the other disappeared variant reappeared. Both alternative variants were present in the F2. Mendel named "recessive" the second alternative variant.
Mendel thought that hereditary traits determined by discrete factors were the possible explication for these phenotypes. These factors should have been present in the F1 in pairs. One of them came from one parental plant, and the other factor came from the other plant. These factors then separated again when sex cells were produced, giving two types of gametes, each with only one factor.
Mendel concluded that each individual (plant) has a pair of factors (alleles), one for each trait (R and r) and that the pair separates (segregates) during the formation of the gametes. This conclusion is known as the segregation principle (First Mendels´ Low).
what is the chemical equation of digestion of carbohydrates?
Answer: Digestion of carbohydrates is performed by several enzymes. Starch and glycogen are broken down into glucose by amylase and maltase. Sucrose (table sugar) and lactose (milk sugar) are broken down by sucrase and lactase, respectively.
Explanation:
The packing of chromatin can be regulated by either the acetylation or deacetylation of DNA.
A. True
B. False
Answer:
B. False
Explanation:
The attraction between DNA and histones occurs because the histones are positively charged and the DNA is negatively charged.
Answer:
B is your answer
Explanation:
an organisms haploid number if its diploid number is 32?
Answer:
The haploid (n) number would be 23 chromosomes found in the gametes, reproductive cells of sperm and ova. For the organism in this example the diploid (2n) number is 12 making the haploid (n) number would be half of that or 6 chromosomes
Answer:
16
Explanation:
This is because the diploid number of an organism is double the haploid number, therefore 32/2=16
What are the three differences between sugars in DNA and RNA?
Humans select from among the naturally occurring genetic variations in a species in the
process of
A) natural selection
B) genetic equilibrium
C) artificial selection
D) survival of the fittest
Answer:
A) Artificialal Selection
Explanation:
The selection is controlled by humans seeking particular phenotypes
All vertebrate embryos have a tail and gill slits at some point during embryonic development. What does this suggest about
vertebrates? (1 point)
O These species evolved in similar environments.
O The embryos of these species require these structures to survive.
O These species share a common ancestor.
O These species have the exact same DNA sequence.
Answer:
These species share a common ancestor
Which habitat is near the equator?
A. Tropical rain forest
B. Tundra
C. Deciduous forest
D. Desert
Explanation:
Tropical rainforest, also spelled tropical rain forest, luxuriant forest found in wet tropical uplands and lowlands around the Equator.
Tropical rain forest habitat is near the equator. So, the correct option is A.
Where is Tropical rain forest?The majority of tropical rainforests are found in the tropics, between latitudes 23.5°N (Tropic of Cancer) and 23.5°S (Tropic of Capricorn). Central and South America, western and central Africa, western India, Southeast Asia, the island of New Guinea, and Australia are all home to tropical rainforests.
With an average annual temperature of above 22 degrees Centigrade and yearly rainfall of over 200 cm, tropical rain forests can be found there. Because of their density, the earth is not illuminated by the sun. These forests contain a wide variety of tree species, each of which sheds its leaves at a different time of the year.
Therefore, the correct option is A.
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How can pollution reduce the rate of photosynthesis? Research work (60-90 words) unnecessarily,useless answers will be reported
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Air pollution has become an extremely serious problem. Air pollutants affect both plants and animals. Under polluted conditions, plants develop different physiological, morphological and anatomical changes. Pollutants cause damage to cuticular waxes by which then they enter the leaves through stomata. This further leads to injury to plants which can be either acute or chronic. Changes in stomata due to air pollutants which seem to be small can be of great consequence with respect to survival of the plant during stress. These effects can further lead to disturbing the water balance of leaf or whole plant. Respiration also gets affected because of the exposure of plants to air pollutants. The present paper deals with the effect of air pollutants on stomata as well as on respiration leading to affect gaseous exchange.
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[tex] \huge\mathfrak\green{mark \: as \: bainliest}[/tex]
What is the difference in the number of chromosomes found in each cell produced in meiosis compared with mitosis?
a-Cells produced during meiosis have half the number of chromosomes as cells produced in mitosis
b- Cells produced during mitosis have half the number of chromosomes as cells produced in meiosis.
c-Cells produced during meiosis have the same number of chromosomes as cells produced in mitosis.
The cells in our bodies contain 23 pairs of chromosomes - giving us 46 chromosomes in total. Sperm cells and egg cells contain 23 single chromosomes, half the normal number, and are made by a special form of cell division called meiosis. ... Meiosis II divides each chromosome into two copies (much like mitosis).
Which set of values tells us if the reaction is at equilibrium
Answer:
the answer is c
Explanation:
what are soft-bodied invertebrates that usually have shells
Answer:
Snails, slugs, squids, octopuses, clams, oysters, scallops, and mussels
If cleansing beneath the foreskin is inadequate, a voided urine specimen may contain _____. a. Escherichia coli b. Staphylococcus aureus c. Mycobacterium smegmatis d. Micrococcus luteus
Answer:
The correct answer is - Mycobacterium smegmatis.
Explanation:
Mycobacterium smegmatis is an acid-fast bacterial that present almost everywhere but it can also be found under the foreskin that has a substance called smegma.
If a urine sample is collected without cleansing adequately under foreskin, this ample may contain this bacteria in the sample. One should clean the beneath the foreskin properly to prevent the sample to get voided.
A beneficial association between coral and algae is an example of
a. commensalism
b. mutualism
c. parasitism
d. predation
Answer: B
Explanation:
The corals and algae have a mutualistic relationship. The coral provides the algae with a protected environment and compounds they need for photosynthesis. In return, the algae produce oxygen and help the coral to remove wastes.
is chloroplast an Organ an organelle a process an organic molecule or a building block
Usable chemical energy on Earth begins as light energy, usually solar energy. Plants and other autotrophs convert solar energy to
Chemical energy via the process of photosynthesis. Carbon dioxide and water, in the presence of light, are transformed into glucose.
The chemical energy is stored in the chemical bonds of glucose and is released during the process of cellular respiration. Cellular
respiration releases the chemical energy stored in food molecules to produce high-energy ATP molecules. Macromolecules such as
carbohydrates and fats can be used as fuels for the production of ATP. All foods contain chemical energy, but the amount of chemical
energy is dependent of the type of food. The larger the compound, the more chemical bonds present and the greater amount of
available chemical energy. We can rank molecule size, from smallest to largest, as sugar, starch, fat. We refer to the stored chemical
energy in foods as calories. A calorie is the amount of energy required to raise the temperature of 1 gram of water 1 degree Celsius.
When we refer to the calories in food, we are really talking about kilocalories or 1000 calories. Biology students "burned" 2 grams of
food to heat water in a calorimeter in order to determine which food items contain the most usable chemical energy.
Almonds may be small, but they pack a great number of nutrients, including protein, vitamin E, and vitamin B2. Almonds also contain
antioxidants and monounsaturated fat, a "good" type of fat that, like the omega-3 fatty acids, reduces the risk of heart disease.
Review the graph that represents the whole class data. Notice that the almond samples provide a large amount of chemical energy.
What is the BEST explanation for this large amount of available energy? (1 point)
Answer:
f0ll0w me on insta gram Id:Anshi threddy_06 (no gap between I and t)
Describe two examples of chemical weathering.
Answer:
Types of Chemical Weathering
Carbonation. When you think of carbonation, think carbon! ...
Oxidation. Oxygen causes oxidation. ...
Hydration. This isn't the hydration used in your body, but it's similar. ...
Hydrolysis. Water can add to a material to make a new material, or it can dissolve a material to change it. ...
Acidification.
Activators are specific DNA sequences which increase the rate of transcription.
A. True
B. False
Answer:
A is your answer
Explanation:
List all of the molecules in the process of translation
Explanation:
Translation is catalyzed by a large enzyme called a ribosome, which contains proteins and ribosomal RNA (rRNA). Translation also involves specific RNA molecules called transfer RNA (t-RNA) which can bind to three basepair codons on a messenger RNA (mRNA) and also carry the appropriate amino acid encoded by the codon.
If a population grows by 3 percent each year, the growth of the population is
A. exponential
B. linear
c. cubic
D. logarithmic
Answer:
A. (exponential) population
If a population grows by 3 percent each year, the growth of the population is exponential. Hence, option A is correct.
What is exponential growth?A function called exponential growth depicts an expansion within a population that happens at the same pace across time. If a population doubles or triples in size, you can assume that the data grows exponentially. Exponential decay is the inverse of exponential growth, in which data contracts rather than expands.
Bacteria are one of the best illustrations of exponential growth. Prokaryotic fission is a method of bacterial reproduction that takes around an hour. The population size of 100 bacteria would increase exponentially if we measured it every hour in a certain environment.
The population growth is exponential. Hence, option A is correct.
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in your own words,what is the definition for vitamin?
please help me with this. im having writers block right now and i cant think.
Answer: vitamin is
any of a group of organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet because they cannot be synthesized by the body.
Resources management requires managing all of the following EXCEPT
air pollution.
how clean water is.
forests and woodlands.
people’s nutritional needs.
Answer:
people’s nutritional needs.
Explanation: just took the test
The seed color of pea plants does NOT depend upon the height of the plant. Therefore, it is possible to have some yellow plants that are tall, and other yellow plants that are short. This is most likely because the height and seed color are controlled by
Horticulture 20 points!!!!!A landscape Blank provides organization and labor to install the plants and hardscape elements of a landscape, and may also provide the original design.
Answer:
Explanation:
En su texto, “General Elements and Principles of Landscape Design”, de Melvin Wong, miembro del Departamento de plantas tropicales y ciencias del suelo de la Universidad de Hawai en Manoa, dice que el diseño de paisaje “difiere de otras formas de arte tridimensionales” porque se basa, principalmente, en el uso de formas vivas de color verde que cambian a lo largo del tiempo según su “adaptación, estado nutricional y problemas de plagas”. (1)
Sin embargo, la manera de crear un diseño de paisaje correcto sí combina una serie de elementos de diseño tradicionales como masa, forma, línea, textura, color y otros. En el paisaje, estos elementos se utilizan para transformar el espacio y crear una experiencia única. Si bien el color y la textura agregan interés y riqueza a un diseño, la masa, la forma y la línea son fundamentales para organizar el espacio y proporcionar estructura.
An invasive species has entered a new ecosystem. There is nothing stopping it from growing very quickly. There is unlimited space and food for them. Will their growth be exponential or logistic
Answer:
logistic
Explanation:
im pretty sure its logistic. im so sorry if its not lol
HELP PLEASE this is "Person Biology Chapter 2 lesson 2"
tyytytytyty <3
Answer:
1) The water cycle.
2) Condensation.
3) Oxygen.
4) Carbon.
5) Fixation.
6) True!
7) True!
8) True!
9) True!
10) True!
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A city located in the middle of North America experiences extreme temperature changes during the year. This is an example of a what climate?