Answer: Eratosthenes was the first to propose a system of longitude between 260 - 201 B.C. Greek astronomer Hipparchus was the first to use longitude to define a location (along with latitude). Longitude lines run from the North and South Poles and are measured by one arcdegree. These lines are called meridians. Unlike latitude, longitude was not able to be determined until the 18th century as a result of difficulty. The Royal Observatory in Greenwich, England marks zero degrees longitude. Longitude was accepted after the 18th century after it was able to be determined and measured by mathematics.
Explanation: Hope this helps! If you have any further questions, let me know.
In what phase of mitosis does the nucleolus reappear
Answer:
Its in the telophase
4 Biotic and abiotic factors that are affected by water pollution
Answer:
biotic: fish, agle, turtles, dolphins, abiotic: air, water, rocks, dirt
Explanation:
biotic is living abiotic is non- living
Describe the importance of receptors in cellular communication
Answer:
Cells have proteins called receptors that bind to signaling molecules and initiate a physiological response. Different receptors are specific for different molecules. ... This is important because most signaling molecules are either too big or too charged to cross a cell's plasma membrane
Explanation:
hope this helps you have a good day
Receptors are transmembrane proteins, that bind to signaling molecules outside the cell and later transmit the signal through a sequence of molecular switches to internal signaling pathways.
What are types of cellular receptors?Membrane receptors fall into three major classes namely G-protein-coupled receptors, ion channel receptors, and enzyme-linked receptors.
Not all receptors exist on the exterior of the cell. Some exist deep inside the cell, or even in the nucleus. These receptors typically bind to molecules which can pass through the plasma membrane, such as gases like nitrous oxide and steroid hormones like estrogen.
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Which of the following is the non-living part of the cell?
Cell membrane
Cytoplasm
Cell Wall
Centrosome
do you think you can help me with this?
How does water form during cellular respiration?
Answer:
The electron transport chain is the third and final step of cellular respiration. Toward the end of the electron transport chain, the hydrogen from the coenzymes meets the oxygen that the cell has consumed and reacts with it to form water. In this way, water is created as a byproduct of the metabolism reaction.
Explanation:
1. What is the optimal temperature that this enzyme functions at and why?
2. What is the optimal Ph that this enzyme functions at and why?
Answer:
The optimal temperature this enzyme functions is at 35 degrees C, as the optimal pH this enzyme functions is at 6. You can easily tell this due to the highest point on the graph (highest rate of reaction).
What do Nucleus and Chloroplasts have in common?
Answer:stuff like
Explanation:
what is anatomical position
The property of water thaj refers to its
ability to stick to itself is called
Answer:
Cohesion allows water to stick to itself.
Where can cells be found in the body?
Answer:
muscle skin bone tissue
Answer:
your whole body
Explanation:
cells are your body, every part of your body has cells, from you head to your feet
Child level explanation for what the cell membrane does for the cell
it separates the inside of the cell from the environment outside and it controls substances moving in and out of the cell (selectively permeable)
What is the definition of the word enzyme
Answer:
any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures
Answer:
Enzymes are proteins that act as biological catalysts (biocatalysts).
Explanation:
10. Explain Darwin's theory. You can us
use diagrams to help you.
what actually transferred when you dipped your finger into the water
a. heat
b. coldness
c. molecules
Answer:
a.heat
Explanation:
Bc when you put your finger in hot water uu fill the heat of the hot water am i right or am i wrong?......
letter A heat or B coldness
Which process does not add carbon to the atmosphere?
Answer:
photosynthesis
Explanation:
Plants and photosynthetic algae and bacteria use energy from sunlight to combine carbon dioxide (C02) from the atmosphere with water (H2O) to form carbohydrates. Oxygen (O2) is a byproduct that is released into the atmosphere.
Photosynthesis does not add carbon to atmosphere.
What is Photosynthesis?
The process by which light energy is transformed into chemical energy in the form of sugars is known as photosynthesis. Using light energy, glucose (or other sugars) are created from carbon dioxide and water, with oxygen being released as a byproduct.
The glucose molecules act as the fuel for the cells; their chemical energy can be obtained through procedures like cellular respiration and fermentation, which result in the production of adenosine triphosphate (ATP), a small energy-carrying molecule, to meet the immediate energy requirements of the cell.
It is possible for organic molecules to integrate inorganic carbon from carbon dioxide; this process is known as carbon fixation, and the carbon in organic molecules is also known as photosynthesis.
Therefore, Photosynthesis does not add carbon to atmosphere.
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Benefits of Microscopes
3. Consider the technology behind each type of
microscope. Why can light microscopes produce
images in their natural color, while scanning
electron and transmission electron microscopes
only produce grayscale images?
Answer:
See the answer below
Explanation:
The light microscope is able to produce images in their natural color because photons of visible light are utilized as a light source and color is a function of light. Both transmission and scanning electron microscopes are not able to produce images in their natural colors because they utilize beams of electrons to image specimens. They produce grayscale images instead because the regions of the specimen where electrons pass through are usually white while other regions remain black.
You want to test whether or not bees are attracted to certain perfumes. You place 3 bowls that contain 5 mLs each of 3 different perfumes and 1 bowl that contains 5mLs of water the same distance away from the beehive and count how many bees land on the bowl for 1 hour. What is the control of your experiment?
Answer:
The control group in your experiment is the bowl of water.
Explanation:
A control group in an experiment is there to prove your experiment works. By having water there, you are proving that the bees are attracted to the perfume itself and not just any liquid.
approximately how many clams would be developing in 10 degree Celcius water ?
Answer:
52
Explanation:
52 clams would be developing in 10 degree Celcius water. The clams that survived in the 21°C and 25°C water are used in both the biomarker and genetic analysis.
what are the characteristic features of clams ?Clam are the member of mollusks belong to Bivalvia class of invertebrate which are characterized with flattened body and two shells on their back.
The body is covered by a protective shells which are calcareous and hard, usually oval, joined by a band known as ligament.
The shell has a thin and a protuberance on its dorsal part called umbo
The color of the shells may vary either dark gray in color, grayish, brown spot, yellowish white in color.
Clams have head but underdeveloped, gills for gaseous exchange, lack eyes and brains, their heart, mouth, rectum and circulatory system are surrounded by blood and water.
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What do scientists call the center of the Earth?
Answer: The call it the Inner Core
Explanation: Earth has 4 layers the Inner Core, the mantle, the outer core and the crust.
The crust- it is the surface of the Earth
The Mantle- Down below the crust is the Mantle
The outer core- known to protect the inner core
The inner core- also known as the center of the Earth
GIVING BRAINIEST
how have humans traveled to the International Space Station.
Answer:
236 People have walked the decks of the ISS
Answer:
The space station has also housed as many as 13 people several times, but only for a few days during crew changeovers or space shuttle visits. The space shuttle fleet retired in 2011, leaving Soyuz as the only current method to bring people to the ISS
Explanation:
The diagrams below represent two cells. Letter A represents a part of each cell. Which part of the cell is labeled A in both diagrams?
A. cell wall
B. chromosome
C. cytoplasm
D. nucleus
Answer:
The answer would be "C," as all of the organelles are suspended in the cytoplasm of a cell. The cytoplasm is extremely important as it protects genetic material and prevents organelles from colliding.
Answer:The answer is C. The cytoplasm is extremely important as it protects genetic material and prevents organelles from colliding.
Explanation:
Which of the following organisms is found in grasslands?
a. cheetah
b. rhea
C. pangolin
d. hyena
Answer:
i wanna say B
Explanation:
According to the question, option b rhea.
The largest South American bird, rheas are flightless and resemble ostriches.
What is the most common organism in grasslands?A temperate grassland is a biome where grass is the dominant plant. Because of the lack of moisture in this environment, trees and shrubs cannot grow in temperate grasslands and the main plants found are grasses and flowers.
Thus, option "B" is correct.
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How are map grid lines like landmarks? How are they different?
bonus points question
1.write the alphabets
2.how many alphabets are there in total
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Answer:
abcdefghijklmnopqrstuvwxyz
Explanation:
26
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Explanation:
There are 27 alphabets
What are advantages of monoculture? Check all that apply. 25 Points
A. produces crops that are easier to grow
B. produces crops that cannot be destroyed by diseases
C. limits variety of taste and nutrition among crops
D.results in higher yields of crops
E. allows for the same resources to be used on crops
Answer:
a,d,e
Explanation:
i aint gonna do you dirty
Answer:
a, and c
Explanation:
its the answer
How organisms are spaced, either random, uniform, or clumped in their habitat refers to their population
A. Density
B. Distribution
C. Limiting factor
D. Immigration
Answer:
B.
Explanation: I'm 100% sure its Distribution.
How is a species’ population dynamics affected by the presence of another species with the same niche?
Answer:
If two species occupied the same niche, they would be competing for the exact same resources. The competitive exclusion principle states that one of the species would drive the other to extinction.
Two species would be in direct competition for the same resources if they both occupied the same niche. According to the competitive exclusion principle, one of the species would inevitably wipe out the other.
What is niche?It defines how an organism or population responds to the distribution of resources and competitors.
(for instance, by growing when resources are abundant and when predators, parasites, and pathogens are scarce) and how it then modifies those same factors.
According to the competitive exclusion principle, often known as Gauss's law, two species that are vying for the same resource in the same habitat but occupy distinct niches cannot coexist at constant population values.
Two species can dwell peacefully in ecological niches without facing any rivalry. It encourages diversity and keeps the food chain in balance.
Therefore, population dynamics affected by the presence of another species with the same niche.
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______ are the units of inheritance in all living organisms.
Answer:
Chromosomes
Explanation:
Chromosomes
The answer would be: Genes
PLEASE ANSWER FAST! In the cells of an organism, the synthesis of biological molecules involves chemical reactions that have a positive change in free energy. Which of the following best explains the impact of this change in free energy?
A. It allows spontaneous reactions to occur.
B. It causes a decrease in entropy.
C. It causes the cell to give off heat.
D. It moves the cell toward equilibrium.
When a molecule is biologically molecule synthesized, there will be a monomer unit converted into the polymer, so there is a change in molecule randomness so entropy is decreased, hence option b is correct.
How biological molecules is synthesized?When a biological molecule is synthesized the monomeric unit is converted into the polymeric unit and there will be a synthesis of bonds.
In a biological system, the system moves towards the spontaneous system, and the change in entropy should be increased. The biological system works only when it is a thermodynamically active system.
All the chemical reactions are held to move towards the equilibrium state when a biological molecule is synthesized change in the entropy of the system is decreased but a change in the entropy of the surroundings increases.
Therefore during the synthesis of biological molecules, entropy is decreased, hence option b is correct.
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