Answer:
The history of Earth concerns the development of planet Earth from its formation to the present day.[1][2] Nearly all branches of natural science have contributed to understanding of the main events of Earth's past, characterized by constant geological change and biological evolution.
Explanation:
What are the 3 main things in a nucleus
Answer:
The nucleus consists of the following main parts: (1) Nucleolemma or nuclear membrane (karyotheca) (2) Nuclear sap or karyolymph or nucleoplasm (3)
Explanation:
Answer:
1. The nucleus; 2. Nuclear Lamina; 3. Nucleoplasm;
Explanation:
what part of the cell serves to process, package, and export protein?
Biology: For the following fill in the blank questions choose from the following words. Each word may only be used once or not at all: photosynthesis, cellular respiration, abiotic, biotic, primary succession, secondary succession, climax communities, pioneer species, biodiversity, and sustainable.
4. The process by which autotrophs use energy from sunlight to build carbohydrates is called ____________________.
Answer:
photosynthesis
Explanation:
Each cell runs on the chemical energy found mainly in carbohydrate molecules (food), and the majority of these molecules are produced by one process: photosynthesis. Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules.
Cell Length of one side Area of one side of the cube (l × w) Surface area (area of one side × 6 sides) Volume (l × w × h) Surface area / volume Ratio of surface area to volume (for example, 5:1) A 1 cm B 2 cm C 3 cm
The complete question is as follows:
1. What does a surface area/volume ratio of 6:1 mean for the cell’s ability to get the materials it needs that move across its surface?
2. What does a surface area/volume ratio of 3:1 mean for a cell’s ability to get materials across its membrane, compared to the cell with a ratio of 6:1?
Answer:
1 . Surface area to volume ratio = 3 : 1
surface area= 3 cm³ or (l = 1 cm) (1 cm x 1 cm x 3) (W = 3)
volume= 1 cm³ (1cm x 1cm x 1cm)
2. Surface area to volume ratio = 6 : 1
surface area= 6 cm³ or (1 cm x 1 cm x 6 ) (w= 6)
volume= 1 cm³
Diffusion increases with the increase in surface area to volume ratio through the semi-permeable membrane of the cell membrane that allows substances to move into the cytoplasm
This is the gas produced as a product of photosynthesis
oxygen*
Carbon dioxide
Photosynthesis
Light energy
Answer:
carbon dioxide that's the answer
The question is in the picture.
Answer:
B
Explanation:
PLS HELP ASAP If an animal cell wasn't in an isotonic solution, wouldn't active transport be able to balance the cell's volume? If not, why?
Answer:
Animal cells tend to do best in an isotonic environment, plant cells tend to do best in
a hypotonic environment. This is demonstrated in the attached PDF.
Explanation:
A cell that does not have a rigid cell wall, such as a red blood cell, will swell and lyse (burst) when placed in a hypotonic solution, a process called cytolysis. Cells with a cell wall will swell when placed in a hypotonic solution, but once the cell is turgid (firm), the tough cell wall prevents any more water from entering the cell. When placed in a hypertonic solution, a cell without a cell wall will lose water to the environment, shrivel, and probably die. In a hypertonic solution, a cell with a cell wall will lose water too. The plasma membrane pulls away from the cell wall as it shrivels, a process called plasmolysis.
I hope this helps. If not I am really sorry!
the prompt: the diagram above shows how carbon is cycled through the environment. what two processes are most important in maintaining this cycle? make sure your claim is supported with evidence and reasonable. include a rebuttal in your response.
In the environment, the carbon cycle is maintained by two different processes, such as photosynthesis and the decomposition of dead organisms. The carbon level is balanced in this way.
What is the carbon cycle?The carbon cycle carries out its work in the environment and maintains the level of carbon in the atmosphere, and the major source of the carbon cycle is photosynthesis, where the plants take the carbon dioxide and water and, with the help of sunlight, glucose and oxygen are released. Glucose is a carbon-based food that can be used by both plants and animals for cellular activities, resulting in the release of carbon dioxide. Decomposers release carbon into the soil and the atmosphere after living organisms, such as plants and animals, die, and in this way the carbon cycle continues.
Hence, in the environment, the carbon cycle is maintained by two different processes, such as photosynthesis and the decomposition of dead organisms.
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i need this i am doing a finals review.
Answer:
B. Evaporation
Explanation:
A distribution between 2 sets of genes is called what?
Explanation:
Allele is possibly the answer
What major impact would any of these conditions most likely have on a living species?
A)
If unable to adapt, a species could become extinct.
B)
More food and water would become available.
C.
They would begin reproducing more quickly
D)
Predators would be hunted by their prey.
What do the results tell us about the experiment? The bacteria from all 3 farms were almost 100% alive in the control samples, meaning that the experiment did not work. None of the bacteria from the 3 farms survived in the control samples. Because the bacteria in the control were almost 100% alive, we know that any deaths of bacteria in the other samples was because of the antibiotics.
Answer: D
Explanation: The ones who are doing this on Gizmos the answer is D.
“Because the bacteria in the control were almost 100% alive, we know that any deaths of bacteria in the other samples was because of the antibiotics.” Y’all should like my answer n give me the brain answer.
The results tell us that in the experiment the death of the bacteria in the other samples was because of the antibiotics, confirming that the bacteria from the farms are sensitive to antibiotics.
What does it mean that the antibiotic is sensitive to bacteria?If a bacterium undergoes the action of an antibiotic, it is said to be sensitive; if, on the contrary, the antibiotic has no effect on the bacterium, it is said to be resistant. Resistance can be natural or acquired (eg, by plasmid transfer or mutations).
With this information, we can conclude that the results tell us that in the experiment the death of the bacteria in the other samples was because of the antibiotics, confirming that the bacteria from the farms are sensitive to antibiotics.
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all you need is in the photo
Answer:
PROBALY C
Explanation:
Describe an example of fermentation that occurs in beneficial bacterial cells within animals and explain why it is important.
Fermentation is an anaerobic process in which energy can be released from glucose even though oxygen is not available. Fermentation occurs in yeast cells, and a form of fermentation takes place in bacteria and in the muscle cells of animals. In these situations, your working muscles generate ATP anaerobically (i.e., without oxygen) using a process called fermentation. Fermentation is beneficial in that it can generate ATP quickly for working muscle cells when oxygen is scarce. Fermentation helps break down nutrients in food, making them easier to digest than their unfermented counterparts. For example, lactose — the natural sugar in milk — is broken down during fermentation into simpler sugars — glucose and galactose ( 20 ).
Microbial fermentation takes place within the gastrointestinal tract of the majority of the animals by the bacterial cells, this helps in the process of digestion and in the synthesis of certain essential components like vitamins.
• The enzymatic decomposition and the usage of food components, mainly carbohydrates by the help of microbes like bacteria anaerobically is termed microbial fermentation.
• Within the gastrointestinal tract of the majority of animals, the process of fermentation takes place, however, the intensity of fermentation depends on the quantity of bacterial cells present, which is usually greatest in the intestine.
• The process of fermentation within the intestine by bacteria primarily helps in the process of metabolism and digestion of carbohydrates that does not get digested in the small intestine like residual starch and cellulose.
• Apart from this, microbial fermentation also helps in the production of vitamin K and some B vitamins.
Thus, microbial fermentation within the intestine of the majority of the animals performs essential functions like digestion and production of vitamins.
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A population of 5000 long-horn beetles lives in a tract of forest. What variables would affect the rate at which the population increases or decreases?
Answer: Weather, food competition
The variables that would affect the rate of the population whether it is increase or decrease are as follows;
Environmental conditions.Competition with other organisms. Available resources like food and space.What do you mean by Population?A Population may be defined as a group of individuals belonging to the same species living in the same area at a definite given time.
Environmental conditions vary from place to place which directly affects the rate of the population by influencing the relative fitness of organisms. The competition also inhibits the fitness and survivability of organisms.
It may be intraspecific and interspecific. While food and space together lead to resources that are available for the organisms in order to reproduce themselves under natural conditions.
Therefore, the variables that would affect the rate of the population whether it is increase or decrease are well described above.
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The nonmetals in groups 5A, 6A, and 7A
A. Lose electrons when they form ions.
B. Form positively charged ions.
C. Form ions with charges of 3-, 2-, and 1-, respectively.
D. Form ions with a numerical charge equal to their group number.
The nonmetals in groups 5A, 6A, and 7A form ions with charges of 3-, 2-, and 1-, respectively; option C.
What are non-metals?Non-metals are elements which form negative ions by the gaining of electrons.
Non-metals are poor conductors of heat and electricity.
Some non-metals combine with metals to form ionic compounds which are able to conduct electricity in molten or solution form.
The non-metals in the period table are usually found in groups 5A, 6A, and 7A.
The non-metals in group 5A include nitrogen and phosphorus.
The non-metals in group 6A include oxygen and sulfur.
The non-metals in group 7A include fluorine and chlorine.
They form ions with charges of 3-, 2-, and 1-, by gaining 3, 2 and 1 electron(s) respectively.
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energy restriction mimetic agents to target cancer cells: comparison between 2-deoxyglucose and thiazolidinediones pdf
There is the use of energy restriction mimetic agents (ERMAs) to selectively target cancer cells which are addicted to glycolysis and could be a promising therapeutic approach.
Thiazolidinediones (TZDs) are synthetic agonists of peroxisome proliferator-activated receptor (PPAR)γ that were developed to treat type II diabetes.
These compounds also display anticancer effects which appear mainly to be independent of their PPARγ agonist activity but the molecular mechanisms involved in the anticancer action are not yet well understood. Results obtained on ciglitazone derivatives, mainly in prostate cancer cell models, suggest that these compounds could act as ERMAs.
2-Deoxyglucose as an energy restriction mimetic agent: effects were on mammary carcinogenesis and on mammary tumor cell growth in vitro.
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Describe the changes that happen as a cell differentiates to become a specialised cell
Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. ... During cell differentiation, the cell size and shape changes dramatically, as does its ability to respond to signaling molecules.
Assertion -Apical meristem is present at shoot and root tips.
Reason-It helps in the longitudinal growth of plants.
a)Both A and R are true and R is thecorrect explanation of the A
b)Both A and R are true, but R is not the correct explanation of theA
c)A is true, but R is false
d)A is false, but R is true
Explanation:
Apical and intercalary meristems always increase in the height of plant and lateral meristems is responsible for secondary growth (increase in girth) but secondary growth doesn't occur is monocots.
in at least one group of fish, osteichthyes, a structure known as a swim bladder was modified to become a primitive lung.
True. In at least one group of fish, osteichthyes, a structure known as a swim bladder was modified to become a primitive lung.
what is osteichthyes?Fish belonging to the taxonomic order Osteichthyes, also known as the "bony fish," have skeletons that are predominantly made of bone tissue. In contrast to them, the Chondrichthyes have skeletons that are predominantly made of cartilage.Jawed fish belonging to the osteichthyes order have a bony endoskeleton. It is the largest group of vertebrates and has a wide variety of freshwater and marine bony fishes.Lungfish, salmon, clownfish, and eels are four examples of Osteichthyes. Along with coelocanths, lungfish belong to the class subclass Sarcopterygii. The subclass Actinopterygii includes the fish that most people are familiar with, such as salmon, clown fish, eels, and fish.Learn more about osteichthyes here:
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Which of the following is NOT a benefit of fertilizer?
enriches the soil with nitrogen, potassium, and phosphorus
O nourishes plants to encourage rapid and healthy growth
O prevents need to abandon fields and clear land for new ones
allows farmers to grow plants using very little soil
Answer:
Allows farmers to grow plants using very little soil
Explanation:
Fertilizer helps us to return the nutrients to the soil for new or current plants to grow. These nutrients were spent by the plants that were there or the soil was not that rich with nutrients, to begin with. It will not replace soil and growing plants without soil is called hydroponics. Fertilizer is very useful in agriculture currently and most likely will continue to be a good way to grow plants for a while.
Answer: The correct answer is allows farmers to grow plants using very little soil
Explanation: This answer has been confirmed correct.
A mutation can cause a defect in human hemoglobin. Which would result in this type of mutation?
Answer:
Decreased ability to carry oxygen. -a result in this type of mutation.
Answer:
There would be a decreased ability to carry oxygen, there will be development of cancer tumors, and there would be an inability to break down sugar development of bacterial infections.
Explanation:
Read through the list of organisms below. Of the organisms below, which ones are autotrophs? . aquatic photosynthetic bacteria a blue whale cheetah green-winged macaw honeybee humans maple tree phytoplankton rye grass tulips
Answer:
aquatic photosynthetic bacteria, maple tree, phytoplankton rye grass tulips
Explanation:
All are plants or does phtosynthesis which is what autotrophs are.
According to Darwin, natural selection is a process by which?
Answer:
According to Darwin natural selection is a process by which living organisms adapt and change to survive in nature and it's limited resources.
you where these terms were introduced.
1. Describe the difference(s) between the
following terms.
(a) concentrated and dilute (4.1)
(b) acid and base (4.2)
Answer:
A. concentrated is the substance on its own, dilute is the substance mixed with (diluted) water.
B. an acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions (in aqueous solution, donates electrons and accepts protons)
Explanation:
Which term includes the living and nonliving things in an area?
A. ecosystem
B. chemosynthesis
C. climate
D. hierarchy
Answer:
A.
Explanation:
It seems most likely.
In a forest ecosystem, wolves hunt and eat deer. What would happen to the ecosystem if a large number of wolves were hunted and killed by humans? Choose the two correct answers. A. The number of deer would increase. B. The number of deer would decrease. C. The vegetation in the forest would increase. D. The vegetation in the forest would decrease. E. The vegetation in the forest would stay the same.
Answer:
The correct answer would be -
A. The number of deer would increase
D. The vegetation in the forest would decrease.
Explanation:
If a large number of hunters or predators are removed from an ecosystem, then there will be, the change that will be found would be increase in the numbers of the prey in the ecosystem. Due to this increase in the numbers of prey the food resources would decrease.
In the given case, the number of deers will increase in absence of enough predators which will lead to overgrazing that will decrease the vegetation in the ecosystem.
Answer:
A+D
Explanation:
If all the wolves were killed then the deer would not die so the number of deer would increase, what does increase mean? increase means that the number of something grows, and decrease means that the number of something would lower and lower until there are none left, or extinct
what is fermentation
Answer:
the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.
Explanation:
Answer:
Fermentation is the process when a substance breaks down into simpler substance. microorganisms like yeast and bacteria usually play a role in the process. it creates beer, wine, bread, yogurt and other foods.
A streak plate may be used to identify which mineral property? (1 point)
O color
O luster
O cleavage
O tenacity
Answer: Color.
Explanation: The rock is dragged against the plate to show its true colors instead of its visible external colors.
How does heat flowing through Earth's layers contribute to the formation of an ocean basin?
Answer:
Moreover, the way that this works is that convection currents in the mantle causes tectonic plates to move when material near the Earth's core rises, and colder mantle rock sinks. Hot magma wells up at the ridges, forming new ocean crust and shoving the plates apart.
Explanation: