Answers
Answer:
C
Explanation:
the answer is C bc I read this and u can site it in the text
Related Questions
students observed several prepared slides of a process that occurs in a dividing onion cell. they observed haploid cells in one slide, centromeres that did not separate during anaphase in another slide, and two different cell divisions resulting in 4 daughter cells in other slides. Which statement is not true about the process that was observed?
1.) the slides were of an egg cell or sperm cell
2.) the process observed produce genetically different cells
3.) the number of chromosomes resulting from the process is reduced by half
4.) the observations suggest cellular reproduction and general growth and repair of the body.
Answers
Answer: pretty sure it could be “B”.
Explanation:
Meiosis produces 4 haploid cells -gametes- from a single diploid cell. The statement that is not true is 4). the observations suggest cellular reproduction and general growth and repair of the body.
Observed prepared slides:
haploid cells in one slide.centromeres that did not separate during anaphase in another slide.cell divisions resulting in 4 daughter cells in other slides.
According to this information, we can assume that the students are observing the occurrence of meiosis events.
MeiosisThrough Meiosis, a diploid cell (2n) produces four haploid daughter cells (n). Thes haploid cells are the gametes.
After DNA replication there are two meiotic phases.
The first one is a reductive phase, in which homologous chromosomes separate. In the second phase, the cell suffers a new, not reductive division.1. In the first phase, Meiosis I:
Prophase I: Chromosomes condensate and become visible. Occurs crossing-over between homologous chromosomes. Crossin-over makes the daughter cells to be genetically different from the original one. Metaphase I: Homologous chromosomes randomly align in the equatorial plane. Anaphase I: In this phase occurs the division and independent separation of homologous pairs. Each chromosome migrates to different poles. This separation generates different chromosomal combinations in the daughter cells. Telophase I: Chromosomes of homologous pairs are already in the corresponding poles, and the nuclear membrane forms again in each pole. Cytokinesis occurs.2. In the second phase, Meiosis II:
Prophase II: Chromosomes condensate again and become visible. Metaphase II: Chromosomes join the spindle apparatus and migrate to the equatorial plane, where they randomly line up. Sister chromatids are holden together until they reach the Anaphase. Anaphase II: Centromeres divide, chromatids get separated, and each of them goes forward an opposite cellular pole. Telophase II: Once in the poles, the chromosomes become lax again, and the nuclear membrane forms again. Cytokinesis occurs. Options1.) the slides were of an egg cell or sperm cell ⇒ Correct. It makes reference to gametes -haploid cells-.
2.) the process observed produce genetically different cells ⇒ Correct. After crossing over and independent segregation of chromosomes.
3.) the number of chromosomes resulting from the process is reduced by half ⇒ Correct. After the reductive phase.
4.) the observations suggest cellular reproduction and general growth and repair of the body. ⇒ INCORRECT. Mitosis is in charge of general growth and repair of the body, not meiosis.
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When air has reached its dew point
A) Air has to be cold
B)Air can hold more water
C)Air is saturated
D)Air has low humidity
Answers
Answer:
When air has reached the dew-point temperature at a particular pressure, the water vapor in the air is in equilibrium with liquid water, meaning water vapor is condensing at the same rate at which liquid water is evaporating.....
Explain how PHOTOSYNTHESIS works in plants
Answers
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Explanation:
(HELP PLEASE I WASNT IN SCHOOL YESTERDAY) All of these forms of energy are involved in the human body's everyday life EXCEPT
Group of answer choices
mechanical energy
thermal energy
nuclear energy
Answers
Answer:
I'm pretty sure it's nuclear energy.
Answer:
the answer is the last one hope it helps
the reactants of photosynthesis are
a: organic compounds
b: glucose and sunlight
c: glucose and water
d: glucose and carbon dioxide
e: water and carbon dioxide
Answers
Answer:
I think its e
Explanation:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants
Weigh 10 grams of sugar and then dissolve in 100 mL of water (2
tools).
Answers
Answer:
180 gramsExplanation:
The solubility of sugar would be about 180 (a maximum of 180 grams of sugar can dissolve in 100 milliliters of water at room temperature). When a solvent has dissolved the most solute it is called a saturated solutionYou would need a scale to weigh it and a beaker/test tube to hold the water...
Which of the following would most likely be reduced when combined with Al(s)?
Will be giving brainliest
Answers
Answer:
A
g
+
- oxidising agent
K
- reducing agent
C
l
2
- oxidising agent
Explanation:
A
g
+
- oxidising agent (most likely form Ag by gaining an electron)
K
- reducing agent (most likely form
K
+
by losing an electron)
C
l
2
- oxidising agent (most likely to form 2
C
l
−
by gaining electrons)
This is based on what is likely, not so much that the above are known to be oxidising or reducing agents.
The most likely option to be reduced when combined with Al(s) is Fe (iron). Therefore option C is correct.
Reduction refers to the gain of electrons by a chemical species. In this case, we are considering the reduction of ions when combined with solid aluminum (Al(s)).
Aluminum (Al) is more reactive than iron (Fe) in terms of its electrochemical properties. When aluminum reacts with certain metal ions, it tends to displace those ions and undergo oxidation itself. This process is known as a displacement or redox reaction.
Fe (iron) is less reactive than aluminum and can be displaced by aluminum in certain redox reactions. Therefore, it is the most likely option to be reduced when combined with Al(s).
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What is mass transport across the cell membrane
Answers
Describe the process of absolute dating as it relates to igneous rock and the fossil record.
Answers
Answer:
Radiometric dating. Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. ... When molten rock cools, forming what are called igneous rocks, radioactive atoms are trapped inside. Afterwards, they decay at a predictable rate.
70 POINTS Use the library and other reference materials to research the discovery of radioactivity and its current applications. Then, write a 500 word report on what you have learned. Be sure to include the contributions of French chemists Marie Curie and Pierre Curie and the medical uses of radiation.
Answers
Answer:
can I write an essay
Explanation:
On April 20, 1902, Marie and Curie with success isolate radioactive metallic element salts from the mineral uranium ore in their laboratory in Paris. In 1898, the Curies discovered the existence of the weather radium and metallic element in their analysis of pitchblende. One year once analytic radium, they might share the 1903 Nobel prize in physics with French soul A. Becquerel for his or her groundbreaking investigations of radioactivity.
Marie Curie was born Marie Sklodowska in Warsaw, Poland, in 1867. The girl of a physics teacher, she was a talented student and in 1891 visited study at the university in Paris. With highest honors, she received a degree in physical sciences in 1893 and in arithmetic in 1894. That year she met state capital Curie, a noted French man of science and chemist who had done vital add magnetism. Marie and Pierre married in 1895, marking the start of a scientific partnership that will accomplish world renown.
What type of cell is more likely to replicate and replicate faster brain cell or hair cell
Answers
Answer:
hair cells is most likely to replicate faster than the brain cell
Explanation:
__________
Moving ions against a concentration gradient requires energy and results 2 points
in uneven concentrations of the ions. ATP powers the pump, allowing it to
create and maintain
of these ions. *
concentration gradients
equilibrium
diffusion
osmosis
Answers
Answer:I think osmsis
Explanation:
Is playstatium a mineral?
Answers
Which person is collecting data through the participant observation method?
O A. William, who is reviewing the comments people wrote on
questionnaires
B. Dakota, who is calculating the results from a survey
OC. Hosea, who is watching people in their normal suroundings
OD. Brittany, who is reading research done by others
Answers
Answer:
C. Hosea, who is watching people in their normal surroundings.
Explanation:
What is the relationship between a person's PULSE RATE and his or her HEART BEAT? A. The heart beat is always double the pulse rate. B. The heart beat and pulse rate may change, but are always equal. C. The heart beat is always half of the pulse rate. D. There is no relationship between the heart beat and the pulse rate.
Answers
Answer:
B. The heart beat and pulse rate may change, but are always equal.
Hope this helps :D Have a fantastic day
why does the temp of the air increase with the height of the stratosphere?
Answers
Answer:
The hot air rises and the cool air falls
Explanation:
what is not a main principle of the cell theory?
a-cells are the basic unit of structure and function in living things
b-new cells are produced from existing cells
c-all cells enclose their DNA within a nucleus
d-all living things are made of cells
Answers
Answer: c not all cells have a nucleus (prokaryotic cells don’t)
Explanation:
The freezing point of a mixture of water and salt is
A. higher than that of pure water
B. the same as that of pure water
C. lower than that of pure water
D. none of the above
Answers
Answer:
lower
Explanation:
salt makes thing freeze faster
Answer:
A
Explanation:
Because when you mix a mixture and pure substances it’s higher
Which of the following statements about plankton or nekton is NOT correct?
a. Nekton are active swimmers.
b. Phytoplankton are important primary producers.
c. All plankton are closely related to plants.
d. Plankton drift or swim weakly.
e. Zooplankton are heterotrophic plankton.
Answers
Answer:
B is the answer
Explanation:
plants make their own food and in this case phytoplankton aslo plankton are known as plants
Under certain external conditions, a person will perspire a great deal. For which internal condition does this response primarily provide homeostasis?
Answers
Answer:
Abnormally high temperature
Explanation:
Sweating or perspiration is a homeostatic response to abnormally high body temperature. Evaporation of the sweat causes cooling of the body and this causes the temperature of the body to return back to normal.
When the setpoint temperature of the body is breached by being too high, the negative feedback mechanism kicks-in, and the sweat glands of the skin becomes activated. The body sweats, and the evaporation of the sweat from the surface of the skin causes cooling and a return back to the setpoint.
Hydrogen ions are found in_____________
which hydroxide ions are found in_______
A. Acids and bases
B. Bases and acids
C. Acids and salts
D. Bases and salts
Answers
Answer:
A
Explanation:
found in acid and bases
Which of the following is an example of resource partitioning?
A-Giraffes will often whack one another with their necks for control over food or mates
B-A fungus starts to decompose a dead tree, causing it to rot.
C-Various insects, such as lice, live on the bodies other organisms and eat their dead skin
D-Raccoons and foxes share the same territory, but raccoons hunt at night and foxes hunt during the day
Answers
Answer:
D
Explanation:
Resource partitioning is an example of sharing resources or splitting them up. In this case, both the raccoons and foxes hunt and share their territories or split them up depending on the time of day.
Which best explains the role of plants in the nitrogen cycle?
Answers
Answer:
Assimilation
Explanation:
This is how plants get nitrogen. They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. ... When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle.
4) After a horrible car wreck, Jamie had a broken ankle, a few minor cuts, scratches, and a
large bruise across her chest from the seatbelt. While at the hospital, they kept checking her left
lung because it kept collapsing.
What systems are affected?
Why?
Answers
answer 18 and 19 Please help I will mark brainliest
Answers
Answer:
18. J.
19. B 23 chromosomes
Answer:
23
Explanation:
answer 18 and 19 Please help I will mark brainliest
(Uhm help?) The law of conservation of energy states that when there is an energy transfer or transformation, energy is lost.
Answers
Assuming this is a true/false question, the answer would be false.
According to the law of conservation of energy, energy is neither created nor destroyed; it simply changes forms.
Unless you are saying that some energy would be lost as heat, This is true.
Answer:
ae you trying to find the meaning?
Explanation:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. The only way to use energy is to transform energy from one form to another.
ex: the cue ball is shot at a stationary 8 ball. The cue ball has energy. When the cue ball hits the 8 ball, the energy transfers from the cue ball to the 8 ball, sending the 8 ball into motion. The cue ball loses energy because the energy it had has been transferred to the 8 ball, so the cue ball slows down.
Which describes the number of new infants per one thousand individuals in a
population per year?
A. Birthrate
B. Space availability
C. Carrying capacity
D. Death rate
Answers
Answer: a
Explanation:
birth rate
When the northern hemisphere points toward the sun, the southern hemisphere faces away from the sun. In this instance, it is:
A.
summer in North America, and winter in Australia.
B.
summer in North America and Australia.
C.
winter in North America, and summer in Australia.
Answers
Answer:
A
Explanation:
the northern hemisphere is the opposite from the southern hemisphere
Since northern and southern hemisphere are in opposite directions therefore, option (A) is correct.
Why are the seasons reversed in each hemisphere?The axis of rotation of the Earth is inclined with regard to the plane in which it orbits the sun. This is the root reason of the changing of the seasons. When the axis of the earth is aligned with the sun, summer arrives in that hemisphere of the planet. Expect winter to arrive when the axis of the earth is tilted away from the sun.
Different places of Earth receive the Sun's most direct rays throughout the year. When the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. When the South Pole tilts toward the Sun, the Northern Hemisphere experiences winter.
Learn more about seasons, here:
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Why do carnivorous
plants sometimes "eat" insects and other organisms?
Answers
Answer:
Because.they are carnivours ya know
Answer:
Like all plants, carnivorous plants are capable of photosynthesis. Since they usually live in areas where the soil quality is poor, they must supplement their diet with nutrients gained from digesting animals. Like other flowering plants, carnivorous plants use tricks to entice insects.
Explanation:
hope this helps have a good rest of your day/night :)
True or False: Epinephrine enters
the cell after it binds to the receptor.
Answers
Epinephrine enters the cell after it binds to the receptor. Yes, this statement is true.
What are the functions of epinephrine?
Adrenaline, also known as epinephrine, is a hormone and medication which is involved in regulating visceral functions. It appears as a white microcrystalline granule.
Epinephrine injection is used for emergency treatment of severe allergic reactions (including anaphylaxis) to insect bites or stings, medicines, foods, or other substances.
Through its action on alpha-1 receptors, epinephrine induces increased vascular smooth muscle contraction, pupillary dilator muscle contraction, and intestinal sphincter muscle contraction.
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