Answer:
C, Bottleneck
Explanation:
A bottleneck effect is defined as when "A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events."
The forest fire is the enviornmental event in this situation, and the population was greatly reduced.
Which example illustrates commensalism and NOT mutualism?
Answer:
you i need these points thx
Explanation:
Which does a reference point provide? A-a position from which to measure future distanceB- a set of standard units for measuring displacement C-a standard method for evaluating variables D-a method for determining the speed of an object
Answer:
A.
Explanation:
Answer:
a position from which to measure future distance
Explanation:
Hope this helps!! :)
the cell membrane from what
Answer:
Plants
Explanation:
The cell membrane is the plants.
What type of mining would be used to extract a vein of ore from deep underground?
A: strip mining
B: open-pit mining
C: shaft mining
D: offshore mining
Answer:
The primary methods used to extract minerals from the ground are: Underground mining. Surface (open pit) mining. Placer mining.
Hey guys im having troubles with this! could anyone please help me with it, if so that would be great and ill give you a brainliest
Answer: the answer is glucose you are correct
Explanation:
hope it helped and did you get it wrong
Which process is a nuclear division mechanism that halves the chromosome number and is a necessary part of gamete formation and sexual reproduction
Answer:
Meiosis
Explanation:
Georgia has hypochondriasis, and Leo has a pain disorder. Which of the following do Georgia and Leo most likely
have in common?
O a history of normal medical exams
O significant pain in a specific area
O a preoccupation with the idea of being sick
O an onset of the disorder before the age of 30
Answer:
C. a preoccupation with the idea of being sick
Explanation:
Hypochondriasis and pain disorder are two conditions that deviates from the normal human health. Hypochondriasis, also known as health anxiety, is a condition whereby an individual is fearfully worried about having a serious illness. On the other hand, pain disorder is a condition in which pain results in certain areas of an individual's body due to psychological disposition of such individual i.e. his/her mindset.
Based on the description of both conditions above, it can be observed that both hypochondriasis and pain disorder are as a result of a preoccupied mindset of being sick. One is worried PSYCHOLOGICALLY about being terribly ill (Hypochondriasis) while the other PSYCHOLOGICALLY induces pain on him/herself.
Answer:
A
Explanation:
got it right on edg 2020-2021
1 . republic
2. delegate
3. smuggling
4. indentured servant
5. dissenter
6. duty
7. liberty
8. proclamation
9. boycott
10. repeal
A. a worker who contracted with American colonists for food and shelter in return for his or her labor
B. the quality or state of being free
C. an official, formal public announcement
D. one who opposes official or commonly held views
E. a representative democracy where citizens choose their lawmakers
F. to cancel a law
G. the act of importing or exporting secretly, in violation of the law
H. to refuse to purchase certain goods or services
I. a representative to a meeting
J. a tax on an imported good
what are the answers ?
Answer:
the answer is a
Explanation:
i did that test an a is right
NEED HELP ASAP * IS MY ANSWER
The electrons in a water molecule are shared unevenly between the oxygen and hydrogen. This creates
A)a covalent bond that can never be broken
B)a slightly negative charge on the oxygen atom *
C)a slightly negative charge on the hydrogen atom
D)a strong ionic bond
Answer:
Its B (a slightly negative charge etc..)
Consider a hypothetical scenario in which the genes that determine body color, eye color, and wing type in fruit flies occur on the same chromosome. To determine the order of the three genes on the chromosome, a researcher looks at hundreds of flies and makes these observations: 90% of flies with red eyes have curly wings. 75% of flies with red eyes have black bodies, whereas the remaining 25% have brown bodies. 1% of flies have curly wings, white eyes, and black bodies. Based on these observations, what is the most probable location of each gene on the given chromosome
Answer:
The most probable location on the chromosome of each gene is:
wing shape gene ------- eye color gene -------- body color gene
Explanation:
To know if two genes are linked, we must observe the progeny distribution. In a tri-hybrid cross, If individuals, whos genes assort independently, are test crossed, they produce a progeny with equal phenotypic frequencies 1:1:1:1:1:1:1:1. If we observe a different distribution, that is that phenotypes appear in different proportions, we can assume that genes are linked in the heterozygote parent.
We can recognize the parental gametes in the descendants because their phenotypes are the most frequent, while the double recombinants are the less frequent. And simple recombinant gametes produced by the cross, which frequencies are intermediate.
By comparing the parental and the double recombinant we will realize which is the allele that changes in position. The position of this gene is in the middle of the other two genes because in a double recombinant only the central gene changes position in the chromatid.
So, according to this knowledge and the available information in the problem we can estimate the position of the genes in the chromosome.
Phenotypic proportions:
90% of flies with red eyes have curly wings (Parental)75% of flies with red eyes have black bodies (Simple recombinant)25% of flies with red eyes have brown bodies (Simple recombinant)1% of flies have curly wings, white eyes, and black bodies (Double recombinant)90% of individuals are red-eyed and curly-winged. This is a high frequency, which means that this is the parental phenotype. The other parental phenotype must be white eyes and straight wings.
Flies with curly wings, white eyes, and black bodies represent the lower proportion (1%) so this phenotype must be the double recombinant.
Flies with red eyes and black bodies, and flyes with red eyes and brown bodies are intermediate in proportion, so they must be simple recombinant phenotypes.
Parental)
Red, Curly
White, Straight
Double recombinant)
White, Curly, Black
Red, Straight, Brown
Simple recombinant)
Red, Black
Red, Brown
In the chromatid, there are two regions, Region 1 (from the first gene to the gene in the middle), and region 2 (from the gene in the middle to the gene of the other extreme).
The fact that both simple recombinants are red, tells us that the eye color gene and the body color gene are together, and the recombination occurred either in region 1 or 2.
We know that the double recombinant is White, Curly, Black. We also know that the eye color gene and the body color gene are together, so one of these two must be in the middle.
Parentals are red and curly, which means that the eye color gene and wing shape gene are also together. This leads us to assume that the eye color gene is in the middle.
Finally, the fact that the double recombinant is White, Curly, Black, and knowing that the eye color is in the middle and that both the extreme alleles change position, we can assume that the parental Red, Curly is also black, while the other parental is white, straight and brown. So:
Parental)Curly ------ Red ------Black (90%)
Straight ----- White ----- Brown
Simple recombinant)Curly -----White-----Brown
Straight-----Red -----Black (75%)
Curly----Red-----Brown (25%)
Straight ----White-----Black
Double recombinant)Curly-----White------Black (1%)
Straight----Red------Brown
please help. i’m literally going to fail biology
Answer: Cell biology encompasses both prokaryotic and eukaryotic cells and can be divided into many sub-topics which may include the study of cell metabolism, cell communication, cell cycle, biochemistry, and cell composition. Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. ... The nucleus is only one of many membrane-bound organelles in eukaryotes. Prokaryotes, on the other hand, have no membrane-bound organelles.
Explanation:
What is the percentage of the parent isotope remaining after 1 Half Life, assuming you start with 100% of a sample.
The___ releases enzymes that digest proteins.
A. pancreas
B. liver
C. gallbladder
Answer:
A. Pancreas
Explanation:
Answer:
Pancreas
Explanation:
The pancreas contains exocrine glands that produce enzymes important to digestion. These enzymes include trypsin and chymotrypsin to digest proteins; amylase for the digestion of carbohydrates; and lipase to break down fats.
PLEASE HELP. I need the answer now
Explanation:
i didnt pay attention last year soooo sorry
Heat Transfer discussion based question
Your response needs to be AT LEAST 2 paragraphs.
DISCUSSION QUESTION: How is thermal energy transferred?
Answer: Thermal energy flows from a warmer material to a cooler material. When thermal energy is transferred to a material, the motion of its particles speeds up and its temperature increases. There are three ways heat is transferred into and through the atmosphere: Radiation, conduction and convection.
Radiation is when energy, in the form of electromagnetic radiation, is emitted by a heated surface in all directions and travels directly to its point of absorption at the speed of light; thermal radiation does not require an intervening medium to carry it. Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it.
why do the processes and events dating back to the big bang eventually led to the existence of life on earth
Answer:
Stars are formed such that their death led to the creation of life.
Explanation:
The Big Bang theory was developed in 1927. This theory helps to understand how the universe was created. According to this theory, hydrogen gas was created through a process of expansion and explosion. As a result, stars are formed such that their death led to the creation of life.
Earth formed around 4.54 billion years ago which is equal to approximately one-third of the age of the universe.
Which of the following limits the size of a food web?
No answer choices but I might think you're talking about
EnergyWhen the herd is moving in direction the handler wants what should the handler do
Answer: the handler should retreat and reduce stress
Explanation:
grandin.com
Answer:
125.6
Explanation:
if you wrote a question from geometry, its 125.6 ft
Which of the following is an effect of the uneven heating of the Earth by the Sun?
A land breeze
A sea breeze
A convection current
All of the above
Answer:
all of the above
Explanation:
because sun radiation is ultra power to destroy any thing
Is the composition of air consistent
Answer:
The air is really a mixture of many different gases, and each gas has its own properties. The composition of air is not constant. It can vary from time to time and place to place.
Answer:
The composition of air is not constant. It can vary from time to time and place to place.
Explanation:
Why is the lynx called a specialist?
Answer:
I can't better person to specialized the lynx people
When making bread, yeast, flour, sugar, and water are mixed together and set in a warm area to rise. A student cut the rising dough and discovered tiny
pockets of gas. This gas formation was causing the bread to rise. What gas molecule is most likely in the dough?
OA. lactic acid
OB. oxygen
OC carbon dioxide
OD alcohol
Answer:
Carbon Dioxide
Explanation:
I just know
The carbon dioxide is the gas molecule most likely in the dough. Thus, option C is correct.
What is Carbohydrates?Carbohydrates is defined as biomolecule that contains carbon hydrogen and oxygen in a ratio of 2:1. Carbohydrates are mane source of energy of the body they work as fuel for the brain, kidneys central nervous system and heart muscle. [tex]Cn(H2O)n[/tex] is the basic formula for all carbohydrates . But this formula have limitation i.e it applies where same amount of carbon and water are use.
Basically, the terms carbohydrate was used to describe compounds that have really contains carbohydrates. Because they had simple formula [tex]CH20[/tex]. In modern Era carbohydrates are classified on the basis of their structure not on their formulae. Such as aldehydes and ketones are now known as polyhydroxy.
Therefore, the carbon dioxide is the gas molecule most likely in the dough. Thus, option C is correct.
Learn more about carbohydrate here:
https://brainly.com/question/14614055
#SPJ6
Use the image to answer the question.
A researcher studying a line of cancer cells notices that cellular content of RhoBTB3 and Cyclin E1 increase and decrease through the cell cycle.
a. He hypothesizes that RhoBTB3 signaling regulates the production of Cyclin E1 and the entry of the cell into mitosis. Based on the data below, explain why his results do not support this hypothesis. Identify what conclusions are supported by this data.
b. Suppose that the researcher can engineer a cell line in which RhoBTB3 expression can be induced by the addition of a drug. Design an experiment using this cell line to test whether RhoBTB3 regulates the production of Cyclin E1. Describe what results he can expect if his hypothesis is correct.
I'm not sure about part b but here's the answer for part a
Explanation:
The experimental data shows that the RhoBTB3 expression increased after 12 hours and reached it's peak at 18 hours, which occurs in the G2 phase. The expression of Cyclin E1, however, started to increase after 8 hours, peaked at 14 hours, and remained there for 2 more hours before starting to decline. This shows that the highest level of the Cyclin E1 expression occurred in the S phase and initiated at the end of the G1 phase. His hypothesis is incorrect because if RhoBTB3 signaling did regulate the production of Cyclin E1, then the peak should have occurred prior to Cyclin E1.
Which correctly lists three features of a rock's grains that determine its texture?
CO
color, pattern, size
O formation, color, shape
O pattern, color, formation
O shape, pattern, size
Answer:
shape, pattern, size i took the test
Explanation:
Answer:
shape pattern and size
Explanation:
What term is used to describe the state in which molecules are evenly distributed in the available space?
Answer:
equilibrium
Explanation:
The term that is used to describe the state in which molecules are evenly distributed in the available space is dynamic equilibrium.
The molecules of a substance refers to a group of two or more atoms of the substance held together b chemical bonds.
Molecules of solids are fixed about a particular point except they are dissolved in solution. Molecules of liquids and gases, however, move about randomly.
When the molecules of a particular substance are more to one side between two adjacent points in a space, a gradient is created. However, when the molecules of the substance are uniformly distributed in a space, they are said to be in dynamic equilibrium.
More on the movement of molecules can be found here: https://brainly.com/question/2284581
Which explains how the formation of the East African Rift Valley formed?
Answer:
c
Explanation:
because of the arrows are pointing the direction of witch it went to make the rift
Levels of Organization are important. Please give the level of organization of each structure
below.
1. Perimysium and Endomysium
2. Myofiber
3. Sarcolemma
4. Sarcoplasmic Reticulum
5. Myofibril
6. Thick and Thin Myofilaments
7. Calcium
Is the human body made of cells?
Answer:
yes the human body is made of cells
Explanation:Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.Cells have many parts, each with a different function.
Which of these particles is the smallest?
Group of answer choices
a proton
an atom
a nucleus
an electron
Answer:
Electron
Explanation:
This would be the smallest electron since its mass is the smallest.
Which of these levels of organization includes all the other levels? ecosystem, community, individual organisms, population
Answer:
An ecosystem does!
Explanation:
An ecosystem holds the others! it includes everything to make a home for organisms