George Emil Palade was a cell biologist who applied electron microscopy to the study of the cell where he observed the ribosomes, where protein synthesis is carried out.
Who was George Emil Palade?He was a Romanian-born, American-naturalized cell biologist who used the electron microscope to study the cell, his contributions include:
Studies on mitochondria, the Golgi apparatus, and other cellular organelles, and on microsomes made up of nucleic acids.The discovery of ribosomes, this being the macromolecules responsible for the synthesis or translation of proteins.Studies on histological structures such as the basement membrane or adhesion complexes in epithelia.Therefore, we can conclude that George E. Palade was especially relevant to cell biology as he applied electron microscopy to the study of the cell where he observed ribosomes and various cell organelles.
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How is photosynthesis different than cellular respiration?
A. The process involves oxygen
B. The process involves light
C. The process involves carbon dioxide
D. The process involves water
Answer:
b
Explanation:
basic bio
In the above diagram of a plant cell, what is the function of structure 1?
A.
captures light energy and performs photosynthesis
B.
is the site of protein and lipid synthesis and controls cell transport
C.
contains genetic information and serves as the control center of the cell
D.
serves a variety of secretory, excretory, and storage roles
Answer:
C.
contains genetic information and serves as the control center of the cell
Explanation:
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How many amino acids must be obtained in the diet because they cannot be made by the body? 2 5 10 20How many amino acids must be obtained in the diet because they cannot be made by the body? 2 5 10 20
Answer:
C or 10
Explanation:
The nose plays many important roles in the conduction of air into the lungs. Air entering the nose from the body’s exterior is very different from the air within the body and lungs. All BUT ONE describes how incoming air is changed by the structure of the nose and nasal passages.
A) As air passes over the mucous membranes, it is warmed and humidified.
B) The olfactory epithelium contain neurons, which conduct sensory signals to the brain.
C) Hairs and mucus on the interior of the nose also catch any solid debris before it can enter the lungs.
D) The convoluted inner structure of the nose increases the surface area of the respiratory tract and forces air to contact the mucous membranes lining the nasal cavity.
C) Hairs and mucus on the interior of the nose also catch any solid debris before it can enter the lungs.
Alexis has a plant with white spots on it. He thinks it might have a chemical burn. What should he do?
a Add commercial fertilizer with Calcium
B. Add commercial fertilizer with Potassium
C. All of the above
D. Dilute the fertilizer with water
What’s a common element among personality
A) they’re administered by psychologist
B) they’re self-reporting
C) there all scientific
D) they all use common formula
Answer:
They all use common formula
What are some ways that dioxins affect health? What is AhR and what does it do?
Answer:
Dioxins are highly toxic and can cause cancer, reproductive and developmental problems, damage to the immune system.
The aryl hydrocarbon receptor is a protein best known for its role in mediating toxicity.
The AhR has roles in regulating immunity, stem cell maintenance, and cellular differentiation.
Explanation:
What exaclty is a mutation?
Answer:
A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene.
How does the sociocultural approach view the importance of ethnicity, gender, culture, and socioeconomic status in the development of personality?
Answer:
individualism and collectivism. Personalities are not influenced by cultural setting. Culture, gender, and ethnicity contribute to the development of personality according to the sociocultural approach. ... Sociocultural theorists would agree that family and environment are key factors in personality development.--teya
where is glucose stored or found in the leaf?
he discovery of mitochondrial DNA (mtDNA) had no effect on which area of scientific investigation?
Answer:
A diseased cell is no longer able to produce proteins.
Explanation: The discovery of mitochondrial DNA (mtDNA) had no effect on the study of cork bark.
Describe three ecological benefits of preserving rainforest ecosystems discussed in the
lesson
Answer:
Explanation:
Benefits of rainforest ecosystems. 1. Preservation of species. Because they are so biodiverse, healthy rainforest ecosystems are the perfect places to preserve huge numbers of species that would otherwise be endangered.
Rain forest ecosystem have several advantages like preserve species, biodiversity is high etc.
what are the types rainforest ecosystem ?
The major constituents of a rainforest ecosystem are tall evergreen trees, it is formed due to heavy annual rainfall, high temperature, poor quality soil and rich in biodiversity.
There are different types of rain forest such as Tropical rainforests which is present near to the equator, the climate is hot and humid.
Temperate rainforests present in extreme temperate zones, close to coastal areas and the climate is cooler than tropical rainforests.
Third is Flooded forest where dry forest can be flooded by heavy rains or due to tidal river surrounding the forest, climate is highly humid.
Lowland rainforests refers to either tropical or temperate present near to valley. Cloud forests or Montane rainforests is located on the top of mountain top, partially in cloud.
Finally, mangrove forests are also called as mangrove swamps, trees are waterlogged ground.
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Help me please I only have 5 minutes left
Earth and space
1 How long after the formation of Earth did the first life appear?
2 Suggest how we know when the different kinds of organisms first appeared on
Earth.
Fears ago
mple animal-like
red.
3 Up to about 3000 million years ago, there was no oxygen in the Earth's
atmosphere. Today, about one fifth of the atmosphere is oxygen gas.
Use the information on page 6 to suggest what caused this change.
Answer:
1.After 10 years
2.we have our ancestors who see it
3.the change was caused by the trees and the good nature surrounds our planet
Note that science believe that every living organisms on earth is made by bacteria
What is heat?
A. Heat is the energy needed to change the temperature of 1 g of a substance by 1°C.
B.Heat is the average kinetic energy of the particles of a substance.
C.Heat is the total energy of a substance due to the movement of its particles.
D.Heat is the energy that flows between two substances of different temperatures.
Answer:
D
Explanation:
heat is the energy that flows between two substances of different temperatures
Answer:
D
Explanation:
Heat is the energy that flows between two substances of different temperatures.
Which of the characteristics describe energy-carrier molecules?
can be coupled to energy-requiring reactions within a cell to help drive the reactions forward
accumulate in large quantities within a cell for long-term storage of energy
are quickly broken down once the molecules release their energy
include molecules, such as ATP, that contain high-energy chemical bonds
are generated when macromolecules, such as proteins, are broken down
Answer:
are quickly broken down once molecules release their energy
Explanation:
The characteristics of energy-carrier molecules are that they are quickly broken down once the molecules release their energy, which isoption. Energy-carrier molecules, like ATP, are quickly broken down into ADP (adenosine diphosphate) and inorganic phosphate (Pi) once they release their energy.
Energy-carrier molecules, such as ATP, store energy in high-energy chemical bonds. When these bonds are broken, energy is released and can be used for cellular processes.Energy-carrier molecules are not typically generated when macromolecules, such as proteins, are broken down. Energy carriers like ATP are produced through cellular respiration, primarily in processes such as glycolysis, the Krebs cycle, and oxidative phosphorylation.
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Ecosystem function relies on the flow of nutrients from one _________ to another in a cycle. Group of answer choices Country Chemical Reservoir Species Altitude
Ecosystem function is highly dependent on the flow of nutrients from one species to another in a cycle.
What is an ecosystem?An ecosystem refers to a biological community that typically consists of both living organisms (biotic factors) and the physical environment (abiotic factors) in which they interact.
What is a species?A species can be defined as a biological classification of related organisms with similar characteristics that are capable of breeding with one another in a cycle.
Generally, the proper functioning of an ecosystem is highly dependent on the flow of nutrients from one species to another in a cycle and as such determines their ability to survive.
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pls, list at least two extinct birds
Answer:
Dodo bird and Great Auk
hope this helps!
Help please
ASAP
Earth and space
Answer: a, suspension
Explanation:
If an mRNA codon reads GAU, its complementary
anticodon on the tRNA will be
A. TUC
B. CUA
C. AUG
D. CAG
How do green plants produce their own food?
Answer:
Photosynthesis
Explanation:
The process by which land plants produce their own food using sunlight and carbon dioxide is known as photosynthesis. The leaves of green plants contain chlorophyll, which absorbs sunlight for producing food. This food is then used by the plant itself as well as other animals, including humans.
Which of the following is a characteristic of inner planets?
Hydrogen and helium atmosphere
Many moons
No land-atmosphere interface
Rocky surface
Answer:
Rocky Surface D).
Explanation:
The inner planets consist of Mercury, Venus, Earth, and Mars. The inner planets all have a common surface composition, which is mainly solid rock. Although some of the inner planets have moons, only one has more than one, while the other two planets lack moons altogether.
None of the inner planets have rings.
The inner planets also tend to have thinner atmospheres. The general pattern for the inner planets is a thin atmosphere, few or no moons, and a surface composed of rock.
Where can tephra be found?
Answer:In the troposphere
Explanation:
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Hormone levels being controlled through body fluids is called
A. hormonal control.
B. neural control.
C. humoral control.
D. thyroid control.
Answer: C.
Explanation:
Hormone levels being controlled through body fluids is called humoral control
What would happen if someone injected tapwater directly into their blood stream?
Answer:
cause your blood cells to become hypotonic possibly leading to death.
Answer:
The plasma will get diluted and it would cause blood cells to become hypotonic which could lead to death. But, the bigger issue is that you're using tap water which is not considered sterile and could lead to infections and other problems
Explanation:
Which of these are recommended for preventing some std/sti’s
Answer: condom is a very good way to prevent stis
Explanation:
In 3-5 sentences explain, why when DDT was released for insect control it had to be banned in 1972 and what this phenomenon is an example of.
DDT was banned after it was released for insect control due to the following reasons:
Threat to human livesThreat to wildlifeHas side health effectWhat is DDT?It is a colourless and odourless chemical substance. It full meaning is Dichlorodiphenyltrichloroethane.
It is an organic compound originally produced as insecticides to control insects
It was later banned in 1972 for use dues to its negative effects in the environment, humans and animals.
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In most normal human somatic cells, telomeres shorten with each division.
a. True
b. False
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1. Types of reproduction in microorganisms and examples
2. Which bacteria could be neutralophile?
3. Which microorganisms in your body may be halophiles?
4. Classification according to how they obtain carbon.
Answer no. 1:
1) binary fission or splitting into two cells (like bacteria)
2) budding or developing outgrowths (like yeast)
3) reproduction using gametes to recombine DNA (like Plasmodium)
4) mitosis, eukaryotic cell division, similar to binary fission (like the micronucleus of the ciliates)
Answer no. 2:
Sorry, don't have any idea.
Answer no. 3:
Most human intestinal halophilic and halotolerant prokaryotes belong to the Firmicutes, Proteobacteria, and actinobacteria phyla.
Answer no. 4:
Carbon can be classified as primary, secondary, tertiary, or quaternary depending on the number of carbon atoms it is bonded to.
Evidence for coordinated stasis is found in _____.
Answer:
Evidence for coordinated stasis is found in the fossil record.
Explanation:
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