how did early cells get their food
Answer:
Through photosynthesis, organisms could use sunlight to make food from carbon dioxide and water.
They provided food for themselves
Explanation:
17.) Which of the following statements is FALSE about mutations?
a. They are almost always harmful
b. They can be caused by exposure to radiation
C. Some mutations can be beneficial
d. They change the genetic code by inserting, deleting, or substituting bases
What is active transport in your own words
Answer:
the movement of a chemical substance by the expenditure of energy against a gradient in concentration
Explanation:
where are protein channnels that are used during facilitated duffusion loacated
Answer
Facilitated diffusion is the diffusion
Explanation
Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane
Hope this helps :-)
what is fibre and it types
Answer:
Fibre is the indigestible parts of plant foods, such as vegetables, fruits, grains, beans and legumes. It is type of a carbohydrate that helps keep our digestive systems healthy.
hello help please i’ll mark brainliest!!!
Answer: The answer is A
The moon has moved past the 1st quater and is heading to the full moon
Answer: Than answer to this question is C
Explanation: The waxing gibbous moon is the last phase before the next full moon.
What is a eukaryote?
Question 2 options:
organism that does not have a nucleus
organism that does have a nucleus
organism that produces its own food
Answer:
an organism that has a nucleus
Explanation:
What is a eukaryote?
1 organism that does not have a nucleus
2 organism that does have a nucleus<<
3 organism that produces its own food
4 organism that is ancient
During translation small organelles called __ read the mrna sequence ?
Answer:
thjs may be wrong but I am not sure ribosomes
What is needed for a fossil to form? Select all that apply.
1. The organism must first get stuck in rock.
2. The soft tissue of the dead organism must be eaten by scavengers before the bones can be preserved.
3. The tracks or burrows of an organism must be filled with sediments before they are disturbed.
4. The organism's body must be covered by sediment or another substance before its body decays.
The correct answer is:The organism's body must be covered by sediment or another substance before its body decays.
What is the explaining statement for the same ?Explanation: For a fossil to form, the organism's body must be rapidly buried in sediment, ash, or another substance before it can decay or be eaten by scavengers.
Over time, the minerals in the surrounding sediment or substance can replace the organic material in the bones, forming a fossil. Tracks, burrows, and other trace fossils can also form when sediment or another substance fills in the impressions left by an organism before they are disturbed.
Getting stuck in rock is not necessarily a requirement for fossilization, as fossils can also form in sedimentary rock or other types of rock.
Lack of oxygen: Decay requires oxygen, so organisms are more likely to fossilize in environments where oxygen is limited or absent, such as in deep water, bogs, or quicksand.
Low acidity: Acidic environments can dissolve bones and other hard parts, so fossils are more likely to form in environments with neutral or basic pH levels.
Lack of disturbance: Fossils are more likely to be preserved if they are not disturbed after burial. For example, if an organism's body is exposed to air or water before it can be buried, the bones may be scattered or destroyed.
Overall, fossilization is a rare and complex process that requires a combination of specific conditions to occur. As a result, the fossil record provides only a partial and biased glimpse into the history of life on Earth.
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Question 13
What is condensation? Describe a way in which it can affect Earth systems.
12pt v
Paragraph
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Answer:
Condensation is a process in which water vapors changed into liquid state.
Explanation:
Condensation is a process in which water that is present in the vapors form changed into liquid state. Condensation greatly affect Earth systems because this process is responsible for the precipitation on the earth. Condensation occurs in the atmosphere when warm air rises in the atmosphere, cools and unable to hold water vapor. As a result, water vapors condenses to form cloud droplets that falls in the form of rainfall.
Describe the difference in pressure agaisnt your cheeks when they are full of air versus when its released
What 6 elements make up all lifeforms on earth?
Explanation:
oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus.
A housefly has 12 chromosomes, is it a gamete or a somatic cell?
Answer:
Explanation:
If a housefly cell had 12 chromosomes, then it would be a gamete or a somatic cell (circle one). If a human cell had 23 chromosomes, then it would be a gamete or a somatic cell
True or False: When a biotic factor dies, the molecules within that
organism enter into the nutrient cycle.
Answer:
Explanation:
True
When a biotic factor dies, the molecules within that organism enter into the nutrient cycle is a true statement.
Biotic factors:
There are two factors in a living system. Biotic and abiotic. all living organisms are biotic components. Plants, animals, and other living components are biotic components. Air, water, and sunlight are abiotic components.
Biotic and abiotic components together make the nutrient cycle. When biotic components die their molecules enter the nutrient cycle. Microorganisms act on the biotic component when they die.
They release carbon, hydrogen, and other molecules into the atmosphere when they die.
Therefore, When a biotic factor dies, the molecules within that organism enter into the nutrient cycle is a true statement.
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What question led scientists to separate plants and fungi into two distinct kingdoms?
A. Does the organism have cells?
B. Does the organism reproduce?
C. Does the organism grow on the ground?
D. Does the organism use sunlight to make food?
Answer:
A
Explanation:
yes because each plant have a cell if they don't they might die.
define disaster management
What is the source of most salt in the ocean?
A.fish
B.human activity
C. Wind
D. Rocks on land
Answer:
D. rocks on land
Explanation:
Salt in the ocean comes from two sources: runoff from the land and openings in the seafloor. Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
Answer:
Option D Rocks on land
Explanation:
Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
explain how pH and temperature can affect enzyme activity
Please help has to be due in 20 mins. Thank you for helping me.
Answer:
Enzyme activity depends on many factors such as Substrate concentration, enzyme cofactor, enzyme inhibitors, pH, and temperature. pH and temperature are two important factors that directly affect the activity of an enzyme as follows:
1. pH
Each enzyme has the specific optimal pH that allows it to perform its function to its fullest. The enzymes are the protein made up of the interaction of the hydrogen bond in the side chain of the protein. if there is any change from optimum pH, the enzyme activity decreases until it stops working.
2. Temperature:
Each enzyme has its own optimal temperature. Any modification or change in temperature results in the activity of an enzyme, and it also leads to the denaturation of an enzyme as it is made up of protein.
Explain the unique information trace fossils and coprolites can help scientists infer about an organism
They're trace fossils, not animal bodies. This coprolite can reveal an animal's diet. Scientists can determine what animal dropped coprolites based on its shape, size, and location.
What are coprolites?Fossilized feces are known as coprolites. Because coprolites provide information for the animal's behavior rather than its shape, rather than being considered body fossils, they are instead categorized as trace fossils.
A coprolite can provide researchers with information about an animal's nutrition. Scientists are able to determine the species of animal that may have been responsible for the droppings by analyzing the shape and size of the coprolites as well as the location where they were discovered.
Because coprolites have a propensity to deteriorate so quickly, we only find them very infrequently. They are the marine species that are found the most frequently. The presence of coprolites in fish and reptiles is very common.
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Where is the greatest amount of the world's carbon found?
Answer:
You find the most amount in the ocean because oceans absorb it.
Explanation:
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ANSWER QUICK!!
One of the bacteria in Model 1 has a tail-like structure.
a) What is the structure called?
b) What might be the purpose of this structure?
c) Based on your answer of the previous question, what might you infer about the absence of this structure in the other two bacteria cells?
From the bacterial model:
(a) the tail-like structure is known as the flagellum (plural, flagella)
(b) The primary function of the structure is to aid movement. It is moved in a whip-like version to propel the organism.
(c) Based on the absence of of flagellum in the other two bacteria, it means that they are not motile.
The presence of flagellum in bacteria is an indication that such bacteria are motile. The thread-like structure is whipped randomly in order for the organism to move and the absence of it in an bacterium is an indication that such a bacterium is not motile.
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Which of the following is the amplitude
of this wave?
B. B
A. A
C. C С
D. D
1. What is the contour interval on this map?
Answer:
100 is the contour interval of this map
What scientist discovered the process of transformation?
Answer: Fred Griffith
Explanation: :)
Without the discovery of magnetic reversals recorded on the ocean floor, scientists
a
could not confirm the usefulness of sonar
b
could destroy the hypothesis of continental drift
c
could not provide a mechanism for moving continents
d
could explain how the seafloor was being destroyed
Answer:
Could not obtain evidence for the hot spot hypothesis. Which of course helps scientist know where under water volcanoes might Be. This is helpful in learning more about sea life and the sea floor and what goes on in an ecosystem located under water.
HAHAHA GOTTIE
Explanation:
Sections of a chromosome that code for a trait are called what?
Answer:
genes ( tell me if I am wrong thx! )
Explanation:
What 3 letters on mRNA is used for the start codon?
Answer:
The codon AUG, commonly known as the start codon, specifies the amino acid methionine. As a result, during protein synthesis, methionine is the first amino acid to dock in the ribosome.
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What is the possible effect of high nutrient levels
In water systems
Answer:
D. Healthier Fish
Explanation:
Describe gastrulation. Why are the three layers important in development?
Explanation:
Cells in each germ layer differentiate into tissues and embryonic organs The ectoderm gives rise to the nervous system and the epidermis, among other tissues
Two species benefit from interaction with each other
Example: A hummingbird gets food from the nectar of a flower and then spreads the nectar’s pollen, helping the flower reproduce.
: One species benefits from the interaction, and the other species is harmed but not necessarily killed
Example: Ticks feed on other animals’ blood, which can hurt the other animals.
: One species benefits from the interaction, and the other species is neither helped nor harmed
Example: Egrets rely on cows to stir up dirt and bring food to the surface, but cows do not benefit.
Answer:
The answers are mutualism,parasitism,and commensalism
Explanation:
these are correct on edge
Answer:
1. mutualism
2. parasitism
3. commensalism
Explanation:
hope this helps :)