The process of mutation leads to the formation of new species. Species evolve because of the accumulation of mutations that occur over time. Some mutations are harmful where as some are useful which are selected by the nature, nothing but natural selection.
This is the colorless fluid surrounding the grana within the chloroplast.
The stroma is the colorless fluid that surrounds the grana within the chloroplast.
The stroma contains the enzymes of light-independent reactions. Thus it is the ground matrix of the chloroplast.
Answer:
stoma
Explanation:
if a grape were placed in a hypertonic solution what would happen and why?
if a grape was put in hypertonic solution, water will move down the concentration gradient from high concentration (in the grape) to low concentration (the solution), causing it to shrink.
Hope ths helps
Abundant thick vegetation/ many species is the grasslands is defined as the grasslands.
True or False
I would say true, because both abundant thick vegetation and there are 3 known types of grasslands, also that many diffrent species of animals live on the grasslands.
What forms the majority of the plasma membrane of cells
Answer:
Phospholipids
Why is Type O- the universal donor? Check all that apply.
A) Type O- has no antigens on its red blood cells, so the red blood cells can’t be attacked by antibodies of other blood types.
B) Type O- has antigens on its red blood cells, so the red blood cells can be attacked by antibodies of other blood types.
C) Type O- has no Rh antigen, so the red blood cells can’t be attacked by the Rh antibody.
D) Type O- has the Rh antigen, so the red blood cells can be attacked by the Rh antibody
Answer:
A) Type O- has no antigens on its red blood cells, so the red blood cells can’t be attacked by antibodies of other blood types.
C) Type O- has no Rh antigen, so the red blood cells can’t be attacked by the Rh antibody.
Explanation:
hope this helps
Type O- blood is considered the universal donor because its red blood cells have no A or B antigens, and it lacks the Rh antigen, preventing immune reactions when transfused into individuals of any other blood type.
Explanation:Type O- blood is referred to as the universal donor for specific reasons. Mainly, Type O- has no antigens on its red blood cells (RBCs), which means it generally does not initiate an immune response when transfused into individuals of any other ABO blood type. This absence of A and B antigens on the RBCs prevents antibodies in the recipient's plasma from recognizing and attacking the transfused blood cells. Additionally, Type O- blood does not have the Rh antigen, which is another common cause of blood transfusion reactions.
Therefore, the correct answers to the question are:
(A) Type O- has no antigens on its red blood cells, so the red blood cells can’t be attacked by antibodies of other blood types.(C) Type O- has no Rh antigen, so the red blood cells can’t be attacked by the Rh antibody.Why do particles in a colloid remain dispersed through out the mixture
Colloids are mixtures in which one or more substances are dispersed as relatively large solid particles or liquid droplets throughout a solid, liquid, or gaseous medium. The particles of a colloid remain dispersed and do not settle due to gravity, and they are often electrically charged.
Particles in a colloid remain dispersed due to their intermediate size and possible electric charges that prevent settling. The Tyndall effect, caused by light scattering, is a signature characteristic of colloids. Factors such as size and surface adsorption of ions or molecules contribute to the stability of these particles in a mixture.
Explanation:The question asks: Why do particles in a colloid remain dispersed throughout the mixture? A colloid is a special type of heterogeneous mixture where dispersed particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas. The particles in a colloid are of an intermediate size, larger than those found in a solution but smaller than those in a suspension, which prevents them from settling out upon standing.
The stability and dispersion of colloidal particles can be attributed to several factors. First, colloidal particles are large enough to scatter light, an effect known as the Tyndall effect. This scatters incoming light beams, making the colloidal mixture appear cloudy or opaque. Secondly, many colloidal particles acquire an electric charge when dispersed in a solution; like charges repel, thus keeping the particles from agglomerating and settling. Some colloids are stabilized by the adsorption of ions or molecules onto their surface, which can prevent the particles from coming close enough to coalesce or settle.
Examples include clouds, which are composed of water droplets of colloidal size, and milk, where dehydrated milk powder disperses spontaneously in water to form colloidal systems. In both examples, the colloidal particles remain dispersed and do not settle out due to their size and interactions at the molecular level. Colloidal particles can also be manipulated through an electrolytic cell, where they move towards an electrode carrying an opposite charge, leading to neutralization and coagulation as precipitates if conditions allow.
What is a filter like structure that works as a sieve and captures microscopic organisms?
I think the answer is a baleen.
How does the cardiovascular system help the body maintain homeostasis?
A) osmosis and capillary action
B) capillary action and thermoregulation
C)thermoregulation and hormone transplant
D) hormone transplant and osmosis
B. Sounds like the best awnser to me.
A quick search provides me with this: In the kidneys, the cardiovascular system maintains homeostasis by providing adequate blood pressure that the kidneys utilize to filter toxins and waste from the blood and subsequently the body. The cardiovascular system also helps the skin in homeostasis by regulating body temperature. / Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity. The effect can be seen in the drawing up of liquids between the hairs of a paint-brush, in a thin tube, in porous materials such as paper and plaster, in some non-porous materials such as sand and liquefied carbon fiber, or in a cell. It occurs because of intermolecular forces between the liquid and surrounding solid surfaces. If the diameter of the tube is sufficiently small, then the combination of surface tension (which is caused by cohesion within the liquid) and adhesive forces between the liquid and container wall act to propel the liquid.
From this I would say your awnser is B.
C Thermoregulation and hormone transport
The Circulatory System delivers oxygen and nutrients in the blood to the surrounding cells to maintain Homeostasis. The blood in the Circulatory System is needed throughout the body so that other systems work properly. Like for instance the Nervous System has the brain, and the brain needs blood to function.
Which is an immediate result of stopping the glycolysis process?
Answer:
A decrease in ATP production in the Krebs cycle
Explanation:
Apex
Habitat vs. Niche Group Activity
Habitat is a place in which an animals lives
A niche is the organisms place or job in the environment
Answer:
Habitat:
Habitat may be defined as the particular area occupied by the organism. Habitat involves the physical activity performed by the organism in its area. Habitat only reflects the living place of the organism. Habitat explains where the species live in the ecosystem.
Niche:
Niche may be defined as the role of the individual organism in its ecosystem. The function or the physiological activity of the organism in the area describes the niche. The association of the organism with the biotic and abiotic component to obtain food is included in niche. Niches explains the way by which organism live in an ecosystem.
The _________________ is the outer part of earths magnetic field. it interacts with __________ and ___________ particles from the Sun, trapping some particles and pushing away others.
magnetosphere; cosmic rays; charged
Select the correct answer.
You are a sales representative for a company that makes a new alternate fuel for vehicles. You have prepared a presentation for the environmental engineers to sell your new product. What question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment?
A. Do we have to change any parts of the vehicle to use this alternate fuel?
B. Will the vehicles get better fuel mileage with the alternate fuel?
C. How much greenhouse gas does your fuel produce compared with current fuel sources?
D. Is the alternate fuel more expensive than fossil fuel?
i think its D or B just take a 50/50 guess i think its D
Autotrophic organisms convert energy from the sun into the bonds of glucose but heterotrophic organisms convert energy from glucose into?
Autotrophic organisms convert energy from the sun into the bonds of glucose, while heterotrophic organisms convert energy from glucose into adenosine triphosphate (ATP).
Autotrophic organisms, such as plants and some bacteria, utilize photosynthesis to capture solar energy and convert it into chemical energy stored in glucose molecules. This process involves the conversion of carbon dioxide and water into glucose and oxygen, using the energy from sunlight.
Heterotrophic organisms, including animals and many microorganisms, are unable to harness sunlight directly. Instead, they obtain energy by consuming organic compounds, such as glucose, derived from autotrophic organisms or other heterotrophs. Through processes like glycolysis, the citric acid cycle, and oxidative phosphorylation, heterotrophic organisms break down glucose to release energy. This energy is primarily stored in ATP, a molecule that serves as the primary energy currency in cells. Heterotrophic organisms rely on this stored energy in ATP to fuel their various cellular processes and sustain their life functions, as they cannot directly capture and convert sunlight into energy as autotrophs do.
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Aerobic respiration and photosynthesis are both
A: ways to make glucose.
B: processes that happen in the chloroplasts.
C: important processes that happen in cells.
D: products of digestion.
Which procedure would help ensure that a foreign DNA fragment could easily incorporate into a bacterial plasmid when the two are mixed together?
a)The fragment and plasmid are both cut with the same restriction enzyme.
b)The plasmid is modified to contain GFP.
c)The plasmid is pretreated with DNA ligase.
d)The DNA fragment is pretreated with DNA ligase.
Salt water is best described as _______.
A.
a mixture
B.
a compound
C.
a pure substance
D.
an element
Please help D:
Explain why the cell membrane is said to be semi-permeable?
The term semipermeable means to allow some substances through and prevent others from passing. The cell membrane is semipermeable because it prevents harmful toxins from entering and damaging the cell. At the same time, the cell membrane allows nutrients and other helpful substances through. In this way, the cell membrane is like a security guard of the cell.
What is a polymer of a lipid?
Unlike other biomolecule groups, fatty acid monomers are not directly bonded to each other in polymer chains. Dehydration synthesis reactions in lipids form an ester linkage between the carboxyl group of a fatty acid and the hydroxyl group of an alcohol monomer such as glycerol.
Answer:
A lipid is a polymer made up of three molecules of fatty acids and one molecule of glycerol. They are the main constituents of body fat in humans and other animals, as well as vegetable fat. Glucose molecules are the monomers for polysaccharides. Amino acids are the monomer of the polypeptide chain or proteins.
What forms the backbone of DNA?
The backbone of DNA is formed by a sugar-phosphate backbone.
Explanation:The backbone of DNA is formed by a sugar-phosphate backbone.
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How does a bacteria’s resistance to an antibiotic first arise? a.) vaccines b.) through mutation c.) bacteria learns to be resistant d.) bacteria decides to be resistant
Answer: option B through mutation
Explanation:
Antibiotic resistance is the phenomena in which the bacteria becomes reistance to a given antibiotic and is no longer killed or harmed by it.Bacteria unlike humand divide rapidly and increase in large number. However, each time it divides it has to replicate its genetic material. In the process of replication there is always a chance of introducing an error which is called as a mutation.The mutation that occurs in a bacteria can either ber advantageous or disadvantageous. However, amongst the various type of mutations that arise in the bacteria if a particular mutation is conferring resistance to an antibiotic then in such case the bacteris gets selected by natural selection.The bacteria having acquired thr resistance is then able to produce more of its progenies with the same antibiotic resistance and thus, this is how the resistance gets propagated.So, firstly the mutation is the one which gives rise to the resistance which is then spread among the bacterial population by the process of reproduction as well horizontal gene transfer.
What are the divisions of geologic time?
Geologic time divisions: Eon, era, period, epoch, age. Each reflects significant changes in Earth's history, aiding understanding of planetary evolution.
The divisions of geologic time, from largest to smallest, are:
1. Eon: The longest division of geologic time. The Earth's history is divided into four eons: Hadeon, Archean, Proterozoic, and Phanerozoic.
2. Era: Each eon is divided into eras. The Phanerozoic eon, for example, is divided into three eras: Paleozoic, Mesozoic, and Cenozoic.
3. Period: Each era is divided into periods. For instance, the Mesozoic era is divided into the Triassic, Jurassic, and Cretaceous periods.
4. Epoch: Each period is divided into epochs. The Cenozoic era's Quaternary period, for example, is divided into the Pleistocene and Holocene epochs.
5. Age: The smallest officially recognized division of geologic time. Ages are typically defined by the appearance and disappearance of fossil species.
These divisions help geologists and paleontologists to organize Earth's history and understand the sequence of events that have shaped our planet. The boundaries between these divisions are often marked by significant changes in the rock record, such as the appearance of new life forms, major extinction events, or shifts in Earth's tectonic activity.
how do cells maintain homeostasis using active transport
Hey there!
Cells maintain homeostasis using active transport by maintaining conditions and within the normal ranges inside all of an organism's cells.
Hope this helped. Would you mind marking me brainliest. Thankyou!
Answer:
homeostasis in a cell maintained when a cell maintains stability in response to any situation
Explanation:
30 POINTS IF YOU ANSWER THESE 5 QUESTIONS!! :33
Answer:
1 color
2 C
Explanation:
brian is talking about evolution with a friend the friend says its just a theory so i dont believe it when they prove it and it becomes the law of evolution then maybe ill change my mind which of these possible replies best describes scientific principles or the work of scientist?
God created the Earth.
He should be wary of science because it is based on research and evidence, not bias and opinion
What is the haploid number of chromosomes in an organism with 46 chromosomes in the body cells?
23 haploid Chromosomes for each human
In order for plants and animals to be able to use nitrogen, N2 gas must first be converted to more a chemically available form. Review the picture of the nitrogen cycle. One type of organism is responsible for "fixing" nitrogen so other organisms can use the element. What organism is this? A) fungi B) plants C) animals D) bacteria
Can you add the picture or describe it to me? Right now I'd guess that it's probably bacteria because bacteria breaks it down into ammonium and nitrate, which is taken up by the plants by a process of nitrogen fixation. So, D.
Answer: Bacteria
Explanation:
The bacteria fix nitrogen in order to provide it to the plants. The nitrogen that is available in the atmosphere in the form that it cannot be used by the plant itself.
This form of nitrogen is converted into another form which can be used by the plants. The nitrogen fixing bacteria perform this process.
The nitrogen from the plants get transferred to the animals and then released into the environment integrated in the waste material.
lipids have more __ and __ than they do oxygen atoms
Lipids have more carbon and hydrogen atoms than oxygen atoms. They comprise primarily hydrocarbons, making them hydrophobic. Besides storing energy, they partake in vital biological roles including forming biological compounds, cell membranes, hormones, etc.
Explanation:Lipids have more carbon and hydrogen atoms than they do oxygen atoms. Comprising a diverse group of compounds, lipids are primarily made of hydrocarbons - atoms of carbon and hydrogen. Despite the presence of other elements like nitrogen, sulfur, and phosphorus in their composition, carbon, and hydrogen atoms are most abundant. Their hydrogen and carbon-rich nature makes all lipids hydrophobic, preferring to not mix well with water molecules.
Not only do lipids serve as an energy store, but they also play structural roles in cell membranes and function as hormones, pigments, and pharmaceuticals. A common type of lipid, triglycerides, comprises a glycerol backbone attached to three fatty acid chains. Lipids are also integral components of biological compounds, including steroids such as cholesterol and signaling molecules like prostaglandins, both derived from fatty acids.
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what is the highest mountain in north america,how high is it?
the highest mountain in north america is denali, which is in alaska. it is 20,310 feet high.
Wagner observed the coastlines and continents in the southern hemisphere has similar grooves which of the following supports coastlines far away from one another having similar Grooves
Answer
The Continental drift
Explanation
From a geographical perspective, the evidence is that Africa and South America might have been a single mass of land due to similar coastal alignment. In addition to that, there is similarity in mountain ranges of Buenos Aires in Argentina to those mountains in South Africa. These mountain ranges have same age and were formed by similar rocks.
Answer:
Glacial Movements
Explanation:
Glaciers usually move in one direction, creating large scratches in rocks around the coastline.
ecosystems must have two factors working together in order to function what are those two factors
In any ecosystem two factors interact together are abiotic factors and biotic factors. Abiotic factors include non-living such as soil, air, water and climatic factors ( temperature, humidity, rainfall or precipitation) whereas, biotic factors includes all the flora (plants) and fauna (animals). These two factors interact through food chains to function an ecosystem.