Recombination (crossing over) during prophase I of meiosis occurs when:
Answer:
meiosis before tetrads are aligned along the equator in metaphase I.
Explanation:
When chromatids "cross over," homologous chromosomes trade pieces of genetic material, resulting in novel combinations of alleles, though the same genes are still present. Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I
Which of the following best describes The change in the percent of penicillin-resistant S. Aureus bacteria since 1940
According to the information provided in the graph it can be inferred that the percent of resistant S. aureus doubled from 1950 to 1960.
The graph shows the evolution of the resistance of the Streptococcus aureus bacteria to penicillin from 1940 to 2010. The percentage of resistance evolved as follows:
1940 - 0% 1950 - 40% 1960 - 80% 1970 - 83% 1980 - 88% 1990 - 90% 2000 - 97% 2010 - 100%
According to this information, it can be inferred that the correct answer is option B because the percentage of resistance of S. aureus doubled from 1950 (40%) to 1960 (80%). Additionally, the other options are not because:
A. Between 1980 and 2010, resistance growth was lower than in previous years. C. Resistance peaked in 2010 (100%). D. Loading capacity was reached in 2010.
Note: This question is incomplete because the graph, options and some information is missing. Here is the missing information:
Pneumonia is a lung infection that can be caused by a species of bacteria, Streptococcus aureus. The antibiotic penicillin has been used historically to treat bacterial pneumonia. In recent years, doctors have observed that penicillin is less effective as treatment for pneumonia.
Doctors collected data about the percent of S. aureus bacteria that were resistant to penicillin. The graph shows the percent of penicillin-resistant S. aureus from 1940 to 2010 in one hospital.
A. The percent of resistant S. aureus grew exponentially from 1980 to 2010.
B. The percent of resistant S. aureus doubled from 1950 to 1960.
C. The percent of resistant S. aureus reached its peak in 1960.
D. The S. aureus population reached its carrying capacity by 1990.
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How a psychologist would explain purely practical
Can someone help me, my paper is due tonight.
Describe solution concentration outside the cell in terms of hypotonic, hypertonic and isotonic.
Answer:
see below
Explanation:
Hypotonic solution is a very dilute solution to the more concentrated solution. Hypo means under . A solution with a lower concentration of solutes than the cytoplasm of a cell, that solution is hypotonic to the cytoplasm. The cell expands as water moves in.
Hypertonic solution is a more concentrated solution to cytoplasm. Hyper means above. A hypertonic solution has higher concentration of solutes than the cytoplasm of the cell. The cell shrinks as its cytoplasm loses water.
Isotonic solution is when two solutions of equal concentration are separated by a semi permeable. Iso means equal. Therefore, in isotonic solutions, water movement out of a cell balances the water movement into it. Cells in the body are usually surrounded by a fluid. The cytoplasm in the cell is usually isotonic to the fluid outside the cell. Hence, no net gain or loss of water by cells.
So, basically, if a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. In an isotonic environment, there is no net water movement, so there is no change in the size of the cell. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.
Which statement about cellular respiration is true?
It produces oxygen.
It requires water.
It is used by every living cell.
it converts energy to food.
2. Summarize the properties of the three types of triglycerides by completing the table.
The properties of the three types of triglycerides by completing the table are:
They are Non-polarThey are HydrophobicThey are Insoluble in waterTriglycerides
Triglycerides are the main constituents of body fat in humans, vertebrates and vegetable fats.
triglyceride is an ester derived from glycerol and three fatty acids.
Summary of their propertiesThey are:
Non-polarHydrophobicInsoluble in waterSoluble in organic solventsTheir specific gravity is less than water.Read more about triglycerides:
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4. If there is lot of water in the cooling magma what is the texture? Where might this happen?
Answer:
glassy texture
Explanation:
Which property is shared by the cells of all living things?
A. The cells contain DNA composed of adenine, thymine, guanine, and cytosine.
B. The cells have chromosomes that are located inside a membrane-bound- nucleus.
C. The cells are surrounded by a phospholipid bilayer and a cell wall made of
cellulose.
D. The cells rely on mitochondria to carry out aerobic cellular respiration.
Answer:
A
Explanation:
B) not all cells have a nucleus. For example, prokaryotes have no nucleus
C)Not all cells have a cell wall.(Animal cells don't)
D) not all cells have mitochondria (Prokaryotes don't)
A) all cells contain DNA, and DNA is all composed of adenine, thymine, guanine, and cytosine.
Living things are those organisms that have life and they possess the basic characteristics that enable them to be termed as living. This include growth, reproduction, irritability etc.
The property listed in the options shared by cells of all living things is the cell contain DNA composed of adenine, thymine, guanine and cytosine.
All living things contain the genetic material (DNA) that carry the needed information essential for their cells to function. Although some living things do not have a membrane bound nucleus eg prokaryotic cells. Many differences therefore exists that differentiates the living things from one another bringing them into groups.Learn more: https://brainly.com/question/18628083
Based on your experimental results, categorize each microbe as preferring isotonic environments, being halotolerant, or as a halophile.
The microbes present in the experiment were:
S. cerevisiae
S. epidermis
A way of categorizing microbes is according to the environment that they need to live in. In other words, we can classify them as isotonic, halotolerant and halophile.
If we put these two microbes in solutions of increasing concentrations, 1%, 7% and 15%, we will see that:
S. cerevisiae only grows when it is in a 1% solution.S. epidermis only grows when it is in a 1% and 7% solution.
In conclusion, S.cerevisiae prefers an isotonic environment. S. epidermis is halotolerant since it can grow in a more hypertonic environment. As none of them grows in a highly hypertonic solution, neither of them are halophile.
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Which list shows the three things that every good paragraph needs?
questions, answers, examples
topic sentence, supporting sentences, examples
themes, examples, transition words
topic sentence, supporting sentences, clincher plzz help me its langue arts
Answer:
topic sentence, supporting sentences, examples
Explanation:
hope it helps
Which two generalizations can be made based on what you know about cycles of matter in a closed system?
A. New matter is added, and old matter is destroyed.
B. Matter changes its physical form, allowing it to return to its original state.
C. The amount of matter within the system remains the same.
D. Matter and energy can cross the boundaries of the system.
E. The cycle has a well-defined starting and stonninn noint
Answer:
C. The amount of matter within the system remains the same.
E. The cycle has a well-defined starting and stonninn point
Explanation:
The relationship between predator and prey species is modeled here with the owls and rodents. Which statement(s) correctly evaluate
the relationship between these species with regards to evolution? Select ALL that apply.
es )
A)
The presence of the owls is a selective pressure for the rodents.
B)
Fewer rodents result in an overpopulation of owls, leading to their
evolution
o
Coevolution is occurring as each population is evolving in response to the
other.
D)
Owls that see camouflaged rodents are more likely to evolve to have
increased variation
E)
Coloration results in poorly or well-adapted rodents while eyesight level
can lead to poor or well-adapted owls.
Answer:A, C, E .
Explanation:
I just did it on USA testprep
A) The presence of the owls is a selective pressure for the rodents.
C) Coevolution is occurring as each population is evolving in response to the other.
What is predator?A predator is an organism that hunts, kills, and feeds on another organism known as the prey. Predation is a biological interaction between two species, where one species benefits by consuming the other species, and the other species is harmed or killed.
These two statements correctly evaluate the relationship between the predator and prey species in terms of evolution. The presence of owls as predators creates a selective pressure for rodents, where those with traits that allow them to escape predation are more likely to survive and pass on their genes.
This leads to the evolution of better-adapted traits in the rodent population over time. The interaction between owls and rodents can also be considered an example of coevolution, as changes in one population can drive changes in the other population, leading to a reciprocal evolutionary response.
Overall, the relationship between predator and prey species is complex and constantly evolving, with each population influencing the other's evolution over time.
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GIVING BRAINLY! A 20 pound barbell is brought from earth to the International Space Station(ISS). How does this trip affect the
gravitational force between the two ends of the barbell? Assume the distance between the barbell end masses does not change.
A) The gravitational force between the ends remains the same.
B) The gravitational force between the ends increases.
The gravitational force between the ends decreases.
D) The gravitational force between them doubles.
E) The gravitational force
between them decreases by one half.
Answer:
...
Explanation:..
Answer: B
Explanation: The International Space Station ISS (assume that the weight of the ISS, if it were on the surface of the earth, is approximately 990,000 pounds) orbits the earth at an altitude of approximately 250 miles above the surface of the earth. Assuming a circular orbit, what is the attractive force that the earth exerts to keep it in orbit? An object's mass does not change from place to place, but an object's weight does change because the gravitational acceleration ge depends on the square of the distance from the center of the Earth. Let's do a calculation and determine the weight of the Space Shuttle in low Earth orbit. On the ground, the orbiter weighs about 250,000 pounds.
What is sexual reproduction?
Answer:
the production of new living organisms by combining genetic information from two individuals of different types
plssss help meee now asap giving brainless
Biology anatomy of a muscle
You can find your answer in this pic
based on what factor do we choose the method of separation for different components of a mixture?
Answer:
Different components of a mixture have different properties on the basis of which we device the method that is used to separate it from other components of the mixture
-TheUnknownScientist 72
Do you have 5th grade
science for kids in Texas
Answer:
Yes, indeed they do.
Explanation:
I called my cousin in texas just to make sure this answer is correct. No problem.
Which refers to the light-sensitive surface at the back of the eye?
1.lens
2.iris
3.retina
4.optic nerve
3 parts of a nucleotide are
Answer:
Nucleobase, Five-carbon sugar, phosphate group.
Base, sugar and group.
Explanation:
Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates.
if you like my answer, please mark me brainliest !! thanks <3 !!
Memory is___; therefore, ___.
1) an exact replica of an event; we should be confident about the accuracy of people's memories
2) like a video cassette recorder; we should wonder about the accuracy of people's memories
3) reproductive; we should wonder about the accuracy of people's memories
4) reconstructive; we should wonder about the accuracy of people's memories
5) reconstructive; we should be confident about the accuracy of people's memories
Memory is reconstructive and we should therefore wonder about the accuracy of people's memories.
Recalling an event via memory has the tendency to be influenced by other cognitive processes, including perception, beliefs, ideologies, imaginations, etc. This phenomenon, known as reconstructive memory, is one of the key theories of memory recall.
This is one of the reasons 2 people who witnessed an event will have different reports for the same event. Thus, the reconstructive memory theory leaves no other option but to wonder about the accuracy of people's memories.
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Why don’t pregnant women menstruate?
Answer:
pregnant women don't menstruate bc the blood is going to the child now
Explanation:
4) If City A has 200,000 people in 2 square miles And City B has 350,000 people in 3 square miles, which city is most densely populated ?
Answer:
city b
Explanation:
because 200000/2=100000 so 100000x3=300000 but city b is 350000
so its city b
INSTRUCTIONS: 1. Prepare the materials needed 2. Think of a slogan managing fatigue levels. 3. The slogan may be express using local dialect (Filipino). 5. Submit your output when you return your envelope. EVALUATION: Your work will be evaluated by your teacher using the following criteria: 1. Relevance 60% 2. Rhyme 20% 3. Presentation 10% 4. Neatness 10 %
Answer:
ikaw po ang gagawa nyan salamat
Which organelle in a plant cell is most affected when a plant has not received any water? Explain your reasoning.
Explanation:
that's why hope it helps you
from the roots up through the stems and into the leaves, replacing
the water used in ———— ??
Answer:
Transpiration
Explanation:
Plants lose water by transpiration.
Where does hunger originate? A., B., C., or D.
Answer:
The answer is (C) In the hypothalamus
Explanation:
Within the hypothalamus are nerve cells that, when activated, produce the sensation of hunger.
All organic compounds contain the element a. Carbon b. Hydrogen c. Nitrogen
Answer:
yes
Explanation:
becawse organic cpd are a compound that formed from living things
What is the true nature of science?
Answer:
Scientific Knowledge Is Based on Empirical Evidence; Scientific Knowledge Is Open to Revision in Light of New Evidence; Science Models, Laws, Mechanisms, and Theories Explain Natural Phenomena. Science Is a Human Endeavor; and. Science Addresses Questions About the Natural and Material World.
If a DNA molecule with a total of 2500 nucleotides has 1500 purines, how many guanines are in this DNA molecule?
Answer:
I'm pretty sure there would be 1000 guanines in the DNA molecule.
Explanation:
Hope this helps. . . <3
If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
What will be the total number of thymines if a DNA molecule has a total of 1500nucleotides?The DNA molecules would be given and it have 450 thymines if the DNA molecule has the total of 1500 nucleotides and the DNA molecule also have been known as the deoxyribonucleic acid has been made up of the double helix. The DNA molecule with the total of 1500 nucleotides would contain 750 cytosine and Thymines and 750 guanines and adenine.
Hence, we can have the expression:
C + T = 750
If there are 300 cytosines, hence;
300 + T = 750
T = 750 - 300
T = 450
A nucleotide has the monomer constituting DNA or RNA biopolymer molecules and the double-stranded DNA molecule posseses two strands of DNA made up of the nucleotides.
Therefore, If a DNA molecule with a total of 2500 nucleotides has 1500 purines, total number of guanines are in this DNA molecule is 1000 guanines in the DNA molecule.
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