Answer:
The Geological Time Scale
Explanation:
The Geological Time Scale is the framework in which the history of the Earth is inscribed. It combines a numerical scale that uses the million years as a unit (chronometric scale) and a scale that is expressed in relative time units (chronostratigraphic scale).
The chronometric scale is based on the measurement of certain physical properties of rocks, generally the relationship between the content of stable and unstable isotopes of the same element.
what do you think about the human and his structure how it's made all the human structure
Answer:
its a thousand of generation evolution i think as of darwins law of evolution
Answer:
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Fragmentation occurs when a large area of ecosystem is divided into smaller, isolated areas due to deforestation. After fragmentation, changes to the ecosystem can occur. Which is most likely an effect of fragmentation on an ecosystem?
a. Animal species in the fragmented area utilize new food sources in the deforested area.
b. Plant species from the deforested area alter conditions at the edge of the fragmented area.
c. The nutrient cycle is replenished by new species colonizing the deforested area.
d. Most native species disappear from both deforested and fragmented areas.
Answer:B
Explanation:
Define concentration gradient.
Answer:
A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
restriction enzymes cut DNA at totally random places. true of false?
Answer:
False
Explanation:
Restriction enzymes, also called restriction endonucleases, are enzymes found in bacteria that cut DNA. They recognise target sequences and cut DNA at or near these sequences. These sequences are called restriction sites.
They act as a defense mechanism against invading pathogens. However, they are routinely used in molecular biology labs to perform DNA technologies such as genetic engineering.
What is the source of oxygen as a reactant in cellular respiration?
Answer:
The Reactants
What goes into the cell? Oxygen and glucose are both reactants of cellular respiration. Oxygen enters the body when an organism breathes. Glucose enters the body when an organism eats.
Explanation:
Hope this helped, Thanks :)
Cellular respiration has been the chemical process that uses glucose to produce energy. Oxygen is the reactant of the process that comes from the air (breathing) produced by photosynthesis.
What is cellular respiration?Cellular respiration has been defined as the process vital for living organisms that use oxygen and sugar molecules to produce energy to drive the activities and functions of the body. The reactant of the process includes glucose and oxygen gas.
Oxygen and sugar are known to be the product of the photosynthetic reaction that uses carbon dioxide and water. The oxygen gas is present in the atmosphere and enters the body through breathing.
Therefore, oxygen acts as a reactant in cellular respiration that comes from the breathing process.
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Match the following terms and definitions.
1. cross-breeding; a method that unionizes gametes of differing genes to create a new individual
recombinant DNA
2. cultured DNA molecules from different biological sources
hybridization
3. a process of breeding organisms because of their specific traits
selective breeding
Answer:
Hybridization - a method that unionizes gametes of differing genes to create a new individual
Recombinant DNA - cultured DNA molecules from different biological sources
Selective breeding - a process of breeding organisms because of their specific traits
Explanation:
In biology, hybridization is the process of creating a hybrid by combining gametes of different species or varieties. An example of a hybrid is a liger - an offspring of a lion and a tiger.
Recombinant DNA is DNA created in the process of genetic recombination. Genetic material from multiple sources is combined, creating sequences that do not occur in the genome naturally.
Selective breeding is the process of breeding organisms with desirable characteristics. For example, a good dog breeder will breed only two completely healthy dogs in order to make sure that the puppies don't have any health issues often associated with the breed.
Hybridization - a method that unionizes gametes of differing genes to create a new individual
Recombinant DNA - cultured DNA molecules from different biological sources
Selective breeding - a process of breeding organisms because of their specific traits
Where are coral reefs located?
A. estuaries
B. neritic zone
c. intertidal zone
D. oceanic zone
Answer:
c
Explanation:
intertidal zone
Running for a long period of time, such as during a marathon, can result in muscle fatigue. Which process is important to a runner at the end of a marathon?
A. lactic acid fermentation to produce ATP without oxygen
B. Alchoholic fermentation to release carbon dioxide
C. The Krebs cycle to produce NADH and FADH2
D. The electron transport chain to produce ATP
The process that is important to a runner at the end of a marathon is lactic acid fermentation to produce ATP without oxygen (Option A).
Cellular respiration refers to the reactions by which aerobic cells normally produce energy in the form of ATP by using energy stored in the chemical bonds of foods and oxygen.Muscle cells can produce ATP by both cellular respiration (aerobic conditions) and acid lactic fermentation (anaerobic conditions).Acid lactic fermentation is energetically much less efficient than cellular respiration, but ATP production in cellular respiration is much slower than in fermentation, thereby muscle cells use this pathway (fermentation) when they cannot get oxygen fast enough to meet their energy requirement.In conclusion, the process that is important to a runner at the end of a marathon is lactic acid fermentation to produce ATP without oxygen (Option A).
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Molecules that make up living things and contain carbon are called __________ molecules.
Molecules that make up living things and contain carbon are called organic molecules.
Organic molecules are those that derive their three-dimensional configurations primarily from their carbon skeletons.
Organic molecules are essential for the birth, development and functioning of all cells that make up living organisms.
About organic molecules:
All organic molecules contain carbon and practically always hydrogen, it is also frequent that they have oxygen or nitrogen.These chemical elements enable multiple and covalent bonds to be established, allow carbon atoms to develop three-dimensional skeletons, and give rise to multiple functional groups. Proteins, vitamins, carbohydrates, lipids, and nucleic acids are organic biomolecules, which are synthesized by living organisms.Therefore, we can conclude that molecules that make up living things and contain carbon are called organic molecules, which a living being needs to develop normally.
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When you mix salt with water in a beaker, the salt is no longer visible. What
happens to the salt?
A. The salt changes state from a liquid to a gas.
B. The salt reacts with the water to make a new substance.
C. The salt dissolves in the water.
D. The salt is destroyed by the water.
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Answer:
C. The salt is dissolved by the water
Explanation:
When ionic compounds dissolve in water, the individual ions separate and get surrounded by water molecules—a process called solvation. Because the salt ions are charged, they dissolve much better in a polar solvent, which is also slightly more charged than a nonpolar solvent
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Can someone pls help me with this (8th grade science)
Answer:
A
Explanation:
As he kicks the ball the speed increases, where he kicks the ball also is a factor, since he kicks it in the same direction that is why it is choice A.
5. Describe the different causes of climate change.
Answer:
natural factors, changes in the sun, emissions from volcanoes, variations in Earth's orbit and levels of carbon dioxide.
Explanation:
When we breathe, we inhale oxygen and release carbon dioxide. What cell process does our body use the oxygen for?
A. Photosynthesis
B. Cellular respiration
C. Osmosis
Answer:
Cellular respiration
Explanation:
This is because if you see Photosynthesis is used for plants to get a food source from the Sun. Osmosis is the movement of chemicals from a less converted membrane to a more. I think i said that wrong but. I am sure it is cellular respiration which is the despirsion of waste products. So yeah Answer is Cellular respiration
Why does salt affect water potential? (Osmosis related)
Answer:
Explanation: Las sales reducen el potencial osmótico del agua, aumentando la necesidad de energía que requieren las plantas para extraer la humedad del suelo, volviéndolas más susceptibles al marchitamiento.
Compare and contrast the TWO classes of "seeded "plants.
Answer:
The seed plants are often divided arbitrarily into two groups: the gymnosperms and the angiosperms. The basis for this distinction is that angiosperms produce flowers, while the gymnosperms do not.
Explanation:
The seed plants are often divided arbitrarily into two groups: the gymnosperms and the angiosperms. The basis for this distinction is that angiosperms produce flowers, while the gymnosperms do not. This is poor form, since it defines the gymnosperms by the absence of a character, and not by any features that the organisms actually share. The gymnosperms do share a number of features, but, as should be obvious from the above cladogram, they are not more closely related to each other than to the angiosperms (Anthophyta). The features shared by gymnosperms were likely present in the early ancestors of the flowering plants as well. It should also be noted that the "progymnosperms" are represented by a box of a different color, in order to make it clear that they are not actually seed plants, but rather are included here because they are believed to be the closest relatives of the seed plants.
Systematics within the seed plants is poorly understood. Part of the problem is that most of the major groups have gone extinct, and several of the groups alive today consist primarily of plants with highly derived morphologies. The above cladogram is based largely on the work of Jim Doyle, a professor at UC Davis, and Michael Donoghue, currently at Harvard, and is therefore somewhat preliminary. It includes some questionable groupings not explicitly supported in their papers.
Why is soil important and how do we protect it
Answer:
Soil provides plants with foothold for their roots and holds the necessary nutrients for plants to grow; it filters the rainwater and regulates the discharge of excess rainwater, preventing flooding; it is capable of storing large amounts of organic carbon; it buffers against pollutants, thus protecting groundwater ...
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Can Plastic Waste Degrade Into The Soil?
Yes or no and explain
Answer:
Yes, but the process is too slow
Explanation:
We pack almost everything in this material and plastic has become a very normal occurrence in the modern world. Each year, people used 1.6 million barrels of oil just to make plastic bottles.
On the other hand, nature takes about 1000 years to develop a single plastic object, while plastic material takes about 240 years.
Some scientists predict that if global warming continues over the next few centuries, melting of the polar caps will raise the level of the oceans, causing some peninsulas to become islands. How might this change eventually affect the species that live on these peninsulas
A biologist was given a sample of an unknown organic macromolecule and 4 points
asked to determine the class of organic macromolecules to which it
belonged. The chart shown below represents the results of the biologist's
analysis of the sample. Based on these results, to which class of organic
macromolecules did this sample belong?*
Element
С
H
Number of Atoms per
molecule
6
12
6
0
0
0
K
N
P
Protein
O Carbohydrates
Lipids
0 Nucleic Acid
Answer:
CarbohydratesExplanation:
Glucose is an organic molecule made up of carbon, hydrogen and oxygen. This simple sugar has the formula C6H12O6 - 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms and is used as an essential means of obtaining chemical energy through various forms of respiration.
Polysaccharides are long chain carbohydrates. These are formed from the sugar monomer glucose, in its ringed formation. The successive molecules form 1,4-glycosidic bonds.
two features of indirect democracy
Answer:
trump
Explanation:
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Answer:
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Explanation:
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how will you describe the process that is shown in the diagram
Answer:
what diagram are u talking about
Which structure in a cell makes proteins using coded instructions that come from the nucleus?
Answer:
Ribosomes
Explanation:
Ribosomes are small particles of RNA and protein found throughout the cytoplasm. Proteins are assembled on ribosomes. The nucleus gives coded instructions to the ribosomes, so they know what proteins to build.
When going to a higher power, where should the object be placed in the field of view?
Answer:
Return to the previous (lower power) objective.
Center the object in the field of view.
Go to the higher power objective and use only the fine focus.
Explanation:
What is insulin and why do people with Type 1 diabetes need it to survive?
Answer:
Insulin is needed to move blood sugar (glucose) into cells. Inside the cells, glucose is stored and later used for energy. With type 1 diabetes, beta cells produce little or no insulin.
Which element is not found on most main sequence stars?
Answer:
Nitrogen is the right answer.
(TRUE OR FALSE)
As discoveries were made that couldn't be explained by spontaneous generations, scientist came up with an updated version of the spontaneous generation model?
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Answer: I'm pretty sure this is true
Explanation:
what is the fundamental unit of matter?
the atom is the fundamental unit of matter.
(hope this helps ^^)
how do skin cells replace itself after an injury?
a) skin cells go through the process of budding to make new identical cells.
b) skin cells go through the procces of mitosis to make new identical cells.
c) skin cells go through the process og photosynthesis to make new identical cells.
d) skin cells go through the process of cellular respiration to make new identical cells.
Answer:
d
Explanation:
as a result of accumulation of waste products in the body , these substances are removed from the body via the skin hence they undergo cellular respiration
Answer:
b) skin cells go through the process of mitosis to make new identical cells.
Explanation:
The skin is the largest organ in the human body; it forms a protective barrier that keeps out external pathogens, and is integral to waste removal. When the organ is injured, damaged cells initiate an immune response, while healthy cells nearby begin to replicate.
This type of cell replication involves somatic cells and results in the diploid number of chromosomes called mitosis. Skin cells are somatic- they contain all 24 pairs of human chromosomes. During replication, the chromosomes are unwound, and copied- then, the newly copied chromosomes separate into two identical daughter cells with the same chromosome number.
Where dose plastic come from?
Answer:
Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil. Crude oil is a complex mixture of thousands of compounds and needs to be processed before it can be used. The production of plastics begins with the distillation of crude oil in an oil refinery.
Explanation: