What does it mean for animal habitats to become fragmented?
Answer
Habitat fragmentation is defined as the process during which a large expanse of habitat is transformed into a number of smaller patches of smaller total area isolated from each other by a matrix of habitats unlike the original (Fahrig, 2003).
Explanation:
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What will happen over time if a population of organisms from the same species is physically separated and can't reproduce with one another?
Answer:
Not too sure about this but I think it would cause extinction
Explanation:
Without reproduction, there would be no offsprings and eventually the older generation of that species would die out.
one paleontologist who specializes in extinction events has claimed that 99.9% of the species that were once alive on earth are now extinct. given the tremendous biodiversity on earth now, the most logical explanation for this is:
Answer:
they all died or something
Explanation:
Discuss the purpose of guard cells and stomata on the leaves of plants.
Frigidia is a colony in Antarctica. The colony is 1,000 square kilometers in size. Currently, 30,000 people live there. Last year, 10,000 children were born and 2,000 people immigrated. 20,000 people died and 5,000 emigrated. It is believed that the island could support up to 50 people per square kilometer. The current growth rate is:__________
Answer:
4.3%
Explanation:
i had this same question on a test
you are attempting to link an individual to a crime. the only evidence you have is a tiny drop of blood. how can you use this drop of blood to definitively make the association? you are attempting to link an individual to a crime. the only evidence you have is a tiny drop of blood. how can you use this drop of blood to definitively make the association? you can use gel electrophoresis to determine the length of the dna found in the sample. you can use the sample to determine the individual's blood type. you can use pcr to increase the amount of dna available for str analysis.
The correct option is D, the only evidence you have is a tiny drop of blood. You operate this drop of blood to definitively make the association. You can use PCR to increase the quantity of DNA available for restrict fragment analysis.
Deoxyribonucleic acid (DNA) is a molecule that carries genetic information and instructions for the development, function, and reproduction of all living organisms. It is found in the cells of living organisms, including animals, plants, fungi, and bacteria.
DNA is a long, double-stranded helix structure made up of four types of nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). These nucleotides are arranged in a specific sequence that encodes genetic information. The DNA sequence is read by the cell and converted into various forms of RNA, which in turn are used to build proteins, the molecular machines that perform the functions necessary for life.
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Complete Question:
You are attempting to link an individual to a crime. The only evidence you have is a tiny drop of blood. How can you use this blood to make the association?
a) You can check the sample for the presence of the Rhesus factor.
b) You can use gel electrophoresis to determine the length of the DNA found in the sample.
c) You can use the sample to determine the individual's ABO group.
d) You can use PCR to increase the amount of DNA available for restriction fragment analysis.
with age, the spine stiffens as a result of shrinkage of the intervertebral disc spaces, and the vertebrae become brittle. this increases the risk of
With age, the spine stiffens as a result of shrinkage of the intervertebral disc spaces, and the vertebrae become brittle. This increases the risk of Compression fractures.
What is compression fracture?
When one or more vertebrae are under too much stress, they might collapse and result in a spine compression fracture. Serious spinal compression fractures might impair your quality of life with painful or incapacitating symptoms.
With rest, the use of a brace, and painkillers, the majority of compression fractures resulting from injuries heal in 8 to 10 weeks. However, if surgery was performed, recuperation might take significantly longer.
Therefore, age causes the intervertebral disc gaps to contract, which stiffens the spine and makes the vertebrae more fragile. Compression fractures are now more likely as a result of this.
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What is the value of the expression m8−(34−n) in simplest form, when m = 6 and n = 18
Answer:
32
Explanation:
(6)8-(34-18)
48-16
32
Hope this helps!
35. Which is an example of possible cross contamination? A. washing whole fruit in a utensil sink B. thawing fully-cooked food at room temperature C. using the same knife to spread mayonnaise and mustard when making a sandwich Back Next
Example of possible cross contamination is using the same knife to spread mayonnaise and mustard when making a sandwich back next.
What is cross contamination ?Cross-contamination can be defined as transfer of harmful bacteria from one person to another. There are different types of contamination such as chemical, physical and microbial. All food is at risk of contamination, that is why food handlers have a legal responsibility to ensure that food they prepare is free from contaminants and safe for the consume .cross-contamination is dangerous when raw foods come into contact with cooked foods.
Therefore cross contamination is the transfer of harmful bacteria from one person to another by using the same knife to spread mayonnaise and mustard when making a sandwich.
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At which of the points along the illustrated action potential can a second action potential be produced, but only with a stimulus significantly greater than that which produced the first?
oligodendrocytes
relative refractory period
brain and spinal cord
A second action potential can be produced, but only with a stimulus significantly greater than that which produced the first, during the relative refractory period of an action potential.
The relative refractory period is a phase of the action potential during which the membrane potential is hyperpolarized and gradually returns to its resting state. During this period, the neuron is repolarizing and recovering from the previous action potential. While the membrane is still more negative than its resting potential, it is possible to generate a second action potential; however, a stronger stimulus is required compared to the initial threshold stimulus.
This increased stimulus threshold during the relative refractory period ensures that neurons have a brief period of reduced excitability, allowing them to recover and prevent rapid firing or excessive activation. It helps regulate the timing and frequency of action potentials and prevents sustained depolarization.
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12. Explain how reducing the amount of soda you drink could reduce the amount of fossil fuels that are consumed as well as the amount of aluminum that is consumed.
Answer:
Reducing the amount of soda you drink can reduce the number of fossil fuels consumed in several ways. First, the production of soda requires energy to power the manufacturing facilities and transport the finished product to stores and distributors. By drinking less soda, there is less demand for these energy-intensive processes.
Second, soda is often packaged in aluminum cans or bottles. The production of aluminum also requires a significant amount of energy, so reducing the amount of soda consumed can also reduce the amount of aluminum produced. Additionally, recycling aluminum cans and bottles also requires a significant amount of energy, so reducing the amount of soda you drink can also reduce the amount of energy needed to recycle aluminum.
Explanation:
4. When water moves from liquid form in a lake to vapor
form in the air, it:
Answer:
Turns into a gas? Not much context to work off of. I don't know what is exactly being asked.
Explanation:
What chemical reaction requires water?
Many chemical reactions require water, including: Hydrolysis, Dehydration synthesis, and Photosynthesis.
Hydrolysis: This is a chemical reaction in which water is used to break down a compound into smaller molecules. The reaction involves the addition of a water molecule to the compound, which causes the bond between the molecules to break.
Dehydration synthesis: This is a chemical reaction in which water is removed from two molecules to form a new, larger molecule. During the reaction, a molecule of water is eliminated, and the remaining atoms combine to form a covalent bond.
Photosynthesis: This is a complex chemical reaction in which water is used as a reactant to produce oxygen and glucose. During photosynthesis, water is split into its component parts (hydrogen and oxygen) in a process known as photolysis. The oxygen is released into the atmosphere, while the hydrogen is used to power the synthesis of glucose.
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What are 3 structures that bacterial (prokaryotic) cells share with eukaryotic cells?
Answer:
Cell membranes, DNA, and Ribosomes
Hope this helps!!
Answer: Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.
plasma membrane, ribosomes, cytoplasm, and DNA.
eukaryotes that reproduce through reproduction require two cells to contribute genetic material for the production of the next generation.
For eukaryotes to produce the next generation through sexual reproduction, two cells must contribute genetic material.
Sexual reproduction, the process through which two individuals of different sexes combine their genetic information to create new species. In the majority of organisms, reproductive cells called gametes, which mate to create a diploid zygote, have chromosomes in their nuclei that carry the genetic material. The zygote grows into a new person. The most common method of reproduction among living things is sexual reproduction. A remarkable variety of offspring, each with a genetic make-up different from that of its parents, may result from sexual reproduction because it allows the rearranging of genetic material both within and between members of one generation. Sexual reproduction is involved.
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What is the differences between mitosis and meiosis and explain why there is meiosis 1 and 2 in cell division but this is not happening with mitosis
Answer:
Explanation:
Cells divide and reproduce in two ways, mitosis and meiosis.
Mitosis results in two identical daughter cells, whereas meiosis results in four cells.
Keys differences and similarities between the two types of cell division.
Mitosis Meiosis
cells created: two daughter cells four daughter cells
Ploidy Creates diploid daughter cells Creates haploid daughter cells
Genetics Daughter cells are Daughter cells are . . genetically identical genetically different
Why is there a meiosis II but not mitosis II?
Meiosis II is generally regarded as being very similar to mitosis, except for the presence of two parent cells, instead of only one. In both meiosis I and II, cytokinesis occurs, and there are two daughter cells per parent cell.
Which of the following options are true about sexual and aesexual reproduction?
A) Aesexual reproduction is possible only with plants.
B) Sexual Reproduction requires a male and female
C) Aesexual reproduction requires sperm and egg
D) Sexual reproduction can be found in daily objects, from pencils to beds
C) All of the above
Thanks for helping!
Answer:
B
Explanation:
A: Bacteria also reproduce themselves aesexually
C: Sexual reproduction require sperm and egg.
D: Pencils and beds do not reproduce themselves.
How did ancient organisms change the Earth’s atmosphere?
Answer:
I will change everything on this earth and make it cool
Refers to how much land a species lives in:
O Local Population Density
O Habitat Tolerance
O Geographic Range
O None of these
Refers to how much land a species lives in Habitat Tolerance.
The tolerance ranges for abiotic environmental factors are similar to the geographic ranges that organisms have. To put it another way, they can tolerate (or survive in) a specific range of a given factor, but they cannot survive if the element is present in either an excessive or insufficient amount.
Let's quickly discuss the range of tolerance in biology, which is the variety of environmental conditions that a species may tolerate and still survive. To put it another way, having too little or too much of a certain environmental factor might be fatal.
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If the temperature increases, enzymes can ______.
Answer:
Increase
Explanation:
As with many chemical reactions, the rate of an enzyme-catalysed reaction increases as the temperature increases.
Investigators examined the expression of transporter mRNA and protein produced in zebrafish homozygous for each of the alleles and found the results summarized below Does the allele associated with light color appear to be altering transcription or translation? Why?
The light colored allele appears to alter transcription and therefore the corresponding mRNA is absent in the homozygous zebrafish.
The protein we can tell was absent because the mRNA required for protein synthesis was not present. If the allele had altered translation, the mRNA that is functional would be present but in the same case, the protein would still be absent. Amino acid/carnitine transporters B(0,+) (ATB(0,+)) and broad neutral (0) amino acid transporter 1(B(0)AT1) The mRNA levels measured in our study suggest that the protein may be used by the duration of 24 -96 hours of fasting in zebrafish.
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True or False: San Andreas Fault is an example of a Convergent Boundary.
how many individual protein subunits make up the quaternary structure of one biologically active myosin protein? what are these proteins? what are their approximate molecular masses?
The fourth (and highest) classification level of protein structure is known as protein quaternary structure.
The term "protein quaternary structure" describes how proteins are made up of two or more smaller protein chains (also referred to as subunits). The quantity and configuration of numerous folded protein subunits in a multi-subunit complex are described by the protein quaternary structure.
Simple dimers, huge homooligomers, and complexes with a set or variable number of subunits are all included in this category of organisations. Since some proteins serve as standalone units, not all proteins will have a quaternary structure, in contrast to the previous three levels of protein structure. Protein biomolecular complexes with nucleic acids and other cofactors are also referred to as having protein quaternary structure.
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which represents a misuse of antibiotics which could lead to antibiotic resistance?
Answer:
where is the option ???
ask me in comments
How do legumes plants help to reduce green house gases in the environment ?
Legumes such as peas, beans, soybeans, clover, and alfalfa can thus help to reduce greenhouse gas emissions of carbon dioxide as well as nitrous oxide in comparing to nitrogen-fertilized crops. Reduced use of fossil energy in food and feed production.
What are greenhouse gases?Greenhouse gases (also known as GHGs) are gases that trap heat in the earth's atmosphere.
The sun shines through the atmosphere during the day, warming the earth's surface. The earth's surface cools at night, releasing heat back into the atmosphere.
In comparison to nitrogen-fertilized crops, legumes such as peas, beans, soybeans, clover, and alfalfa can help to reduce greenhouse gas emissions of carbon dioxide and nitrous oxide. Reduced reliance on fossil fuels in food and feed production.
Thus, this way, legumes plants help to reduce green house gases in the environment.
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in a mutant that lacks adenylyl cyclase, the enzyme that synthesizes camp , predict which of the following conditions of extracellular lactose and glucose would cause regulation of the lac operon to differ from that of wild-type cells.
In a mutant that lacks adenylyl cyclase, the synthesis of cyclic AMP (cAMP) is impaired, which is a crucial regulator of the lac operon.
Therefore, the regulation of the lac operon in this mutant would differ from that of wild-type cells under conditions of extracellular glucose concentration. In wild-type cells, when glucose is present, it inhibits the production of cAMP, which in turn reduces the activation of the lac operon. However, in the mutant lacking adenylyl cyclase, the absence of cAMP synthesis means that the lac operon cannot be regulated in this way, and so the presence of glucose would not have an inhibitory effect on the lac operon. On the other hand, the regulation of the lac operon in the mutant lacking adenylyl cyclase would not differ from that of wild-type cells under conditions of extracellular lactose concentration, as lactose acts as an inducer of the lac operon independent of cAMP levels.
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Which of these statements best describes prey
Prey Definition:
Any animal that is killed and eaten by another animal.
Please help me
What determines if an ocean current is warm or cold- short answer
THIS IS SCIENCE PLEASE HELP ME I GIVE BRAINYLIST
Answer:
Currents originating in low latitudes near the equator tend to carry warmer water. Currents originating in high latitudes near the north or south pole tend to carry colder water.
Explanation:
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Question 1 (1 point)
Which of the following is NOT a step in the scientific method?
make observation
collect data
form a hypothesis
form a theory
Which group of flasks acted as the experimental group and control group in Pasteur's experiment?
Answer: becteria
Explanation:
pasteur diveded micro-organisms in to severel group of and control groups.