Answer: chromatin condenses into chromosomes and can be best observed in prophase.
Explanation: chromosomes can’t be visualised by a light microscope except during cell division (mitosis or meiosis). The individual chromosomes become visible as the chromatin is wound tightly and are most clealry seen in late prophase.
HELP ASAP! 50 POINTS!! WILL MARK BRAINLIEST!! THANK YOU!!
Complete the Punnett square for a dihybrid cross of a new type of cat: PpRr (mother) x ppRr (father)
Answer:
I hope this helps, if it doesn't help you please let me know, and I'll delete my answer!
What two substances make the backbone of the DNAmolecule?
An empty field has no plants growing on it. When it rains, some of the field's sail washes away downhill.
Which statement best explains how planting grass on the field might help reduce soil erosion?
O A Grass will make the soll more wet
B. Grass will help hold the soil together.
c Grass will increase the amount of soil.
O O D. Grass will stop water from moving over the field.
O
Answer:
b grass will help hold the soil together
If a gene sequence in one organism is highly similar to the sequence of another gene in another organism it is called
Answer:
This question lacks options, options are: a.related. b. homologous. c protein-coding, d. comparative. The correct answer is b.
Explanation:
Homology refers to the fact in which the sequences of two or more proteins or nucleic acids are very similar due to the fact that they have the same evolutionary origin. Normally two sequences have a high similarity because they are homologous, that is, they share a common ancestor. If two sequences in an alignment are from a common ancestor, mismatches can be interpreted as point mutations (substitutions), and gaps as insertion or deletion mutations introduced into one or both lineages in the time since they diverged.
According to the fossil record above, during which era did mammals first appear?
A)
Cenozoic
B)
Mesozoic
0
Paleozoic
D)
Modern Day
Answer: The answer is A
Explanation:
took the quiz on usatestprep
Answer:A)
Explanation: Mammals first appeared in the Cenozoic era. My teacher explained it and it's visable in the picture.
In the Calvin Cycle, what is ultimately made?
A.H2O
B.Carbon Dioxide
C.Oxygen
D.Glucose
Answer:
D. Glucose
Explanation:
I'm 11 ok your lucky I know that...
1 point
2. The most precise type of dating used for determining a fossil's age is
relative-age dating. *
True
False
The purpose of both mitosis and meiosis is to create new cells. Both processes involve the replication of genetic material within the cell, and
both take place within a sexually reproducing individual. There is a difference between the processes, however. What is one crucial
difference?
SC.912.L. 16.17
Meiosis creates an exact replica of the parent cell, while mitosis shows genetic diversity.
Mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity.
Only meiosis allows for the possibility of gene point mutations.
Only mitosis allows for the possibility of translocation.
Answer: Mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity.
Explanation:
I did the test too
The one crucial difference between meiosis and mitosis is mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity.
The correct option is (B).
What is the difference between meiosis and mitosis?Mitosis and meiosis both are the process of cell division.
Mitosis occurs generally when cell growth happens, the cell divides itself to produce two identical daughter cells.
Meiosis, in cell division, occurs in germ cells and in the division there is a formation of four daughter cells.
Mitosis produce exact identical cell with equal number of chromosome, whereas meiosis produce four haploid cells with genetic diversity.
Thus, the option (B)Mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity is correct.
Learn more about cell division, here:
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Which of the following systems of the body interact when a stressful situation causes a person's heart rate to increase and pupils of the eyes to dilate?
A.
nervous system and excretory system
B.
endocrine system and nervous system
C.
respiratory system and nervous system
D.
nervous system and digestive system
Answer:
B
Explanation:
remember to imagine that blood in the heart is color-coded according to its oxygenation status. What color of blood would you expect to see in isabelle's left ventricle
Answer:
Red blood.
Explanation:
Red blood is for oxygenated blood, while blue blood is for deoxygenated blood.
The blood in Isabelle's left ventricle would be red, in other words, oxygenated. The left ventricle has oxygenated blood because this blood was first in the right ventricle. Then, it went to the pulmonary arteries, which led the blood to the capillaries close to the alveoli in the lungs. In this area, the deoxygenated blood dropped the CO₂ and took O₂ becoming oxygenated blood. Now, this blood is color-coded red and will go to the pulmonary venules, then to the pulmonary vein, and from there, it will go to the left atrium. Lastly, it will go to the left ventricle to start the systemic circulation, which is the one that distributes the oxygenated blood in the body.
.Complete the sentence
The addition or removal of genes from a population is referred to as_____________
Answer:
The answer is -
Evolution
why could an ecosystem be unable to sustain an increase in carnivores?
A. There is not enough prey
B. The carnivores now have more space
C. plants growth increases
D. It is a marine ecosystem
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(Please give an explanation and no incomplete/absurd answer I really don't wanna report anybody lol)
Why might it be harder to convince people of the value of forest ecosystem services as opposed to the value of it's economic service?
Answer:
It might be harder to convince people of the value of the forest ecosystem services as opposed to the value of its economic service because truthfully, people have different ideas on what is important and what´s not. So some people may think that the forest has no worth and it doesn´t matter to them if it gets torn down or not, as long as it makes them money, but others may feel that a forest is a special place where animals and such have a place to be free. In the end, it´s always about money and morals. I hope this helps!!
Explanation:
Explain the Role of the Most
bucco in Living Organisms
Click the statement that best describes the role of each element in living organisms.
Carbon
Oxygen
Hydrogen
DONE
Answer:
carbon
Explanation:
Which amphibian is the scientist most likely observing? A scientist is observing an amphibian. It has brightly colored skin, four legs, sticky pads on its feet, and a long, narrow body, a salamander because it has sticky pads on its feet O a salamander because it has a long, thin body O a frog because it has four legs O a frog because it has brightly colored skin
Answer:
B
Explanation:
what molecule is taken into to start the light dependent reaction
Answer: ATP, and NADPH. These energy-carrying molecules are made in the stroma.
9. Doctors tested a patient to find out what molecules were in her cells. Her cells contained normal
levels of oxygen molecules, low levels of amino acid molecules, and low levels of glucose molecules
Will this patient be able to exercise normally?
a
Yes, as long as her cells have enough oxygen, her body will be able to exercise,
b
No, her cells need glucose to react with oxygen to release enough energy to exercise.
С
No, her cells need amino acids to react with oxygen to release enough energy to exercise.
d
No, her cells need glucose to react with amino acids to release enough energy to exercise.
Answer:
b. No, her cells need glucose to react with oxygen to release enough energy to exercise.
Explanation:
Living organisms are able to perform any of their day-to-day activities due to the release of energy in their individual cells. The process by which this energy is obtained by their cell is called CELLULAR RESPIRATION. Cellular respiration is the process whereby glucose (from digested food) is broken down in the presence of oxygen to yield energy in form of ATP. The general equation is as follows:
C6H12O6 (glucose) + 6O2 (oxygen) → 6CO2 + 6H2O + ATP
According to this question, a doctor is said to test a patient for the content of molecules in her cells. Her cells were found to contain normal levels of oxygen molecules, low levels of amino acid molecules, and low levels of glucose molecules. This patient will NOT BE ABLE to exercise normally because her cells need glucose in optimal amount to react with oxygen to release enough energy to exercise.
Which of the following are reactants in the process of photosynthesis?
Answer:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.
Explanation:
Answer:
carbon dioxide and water
Explanation:
which of the following are reactants in the process of photosynthesis?
Why might intermittency be a problem with new energy system?
expenses in establishing new energy system
Which of the following is an example of heat transfer by conduction?
Answer:
Explanation:
Everyday Examples of Heat or Thermal Conduction
As the pad heats up, it transfers heat to the part of your body that it is in contact with. The heat from a hot liquid makes the cup itself hot. If you grab a cup that has hot coffee, tea or broth in it, the cup itself will be hot and your hands will feel it.
The burning of fingers on a hot iron is an example of heat transfer by conduction. Therefore, option A is correct.
What is heat transfer by conduction?When two objects with different surface temperatures come into contact, conduction takes place. At the point of contact, energy is transferred directly from the material in the hotter object to the material in the cooler item.
When a substance is heated, the particles become more energetic and vibrate more. Then, as these molecules collide with surrounding particles, some of their energy is transferred to them. The energy is then transferred from the hot end of the material to the colder end by repeating this process.
The act of heating a skillet on a stovetop is a typical illustration of conduction. The surface of the pan receives direct contact with the burner's heat. Hence, option A is correct.
Learn more about conduction, here:
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A drug may cause decreased communication between neurons or between neurons and muscles or glands. What might be the common action of this drug to cause such varied effects
Answer:
acid
Explanation:
I need someone to answer number 9 please
Why do you think electron microscopes allow for greater magnification than compound microscopes?
Explanation:
Electron microscopes have a greater magnifying power than optical microscopes due to the use of shorter wavelength electrons.they allow magnifications of up to one million times the size of a specimen while optical microscopes can achieve a magnification of no greater than 1000x.
I hope it's helpful!
An Electron microscope allows for greater magnification than compound microscopes it utilizes electrons of a much shorter wavelength as compared to the visible light in a compound microscope.
What is an Electron microscope?An electron microscope may be defined as a type of microscope that utilizes a beam of accelerated electrons in order to construct or produce an enlarged image of tiny objects or specimens like virus cells.
The higher resolution power is the characteristic feature of the electron microscope. An Electron microscope allows a magnification of approximately one million times the actual size of objects or biological specimens.
While, when it comes to the compound microscope, the magnification power limits to a thousand times the actual size of objects or biological specimens.
Therefore, the utilization of electrons of a much shorter wavelength is responsible for greater magnification in the electron microscope.
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wwhat came first the chiven or the eggg
Answer:the egg
Explanation:Eggs were around the corner before chickens even lived
Answer:
The Chicken
Explanation:
The egg could only be made by two birds that (may not have been chickens but would later evolve into chickens) mated and laid an egg.
If phosphofructokinase experienced a mutation that interfered with substrate binding, then what other enzyme is going to be most immediately impacted in terms of accessing substrate
Answer: Aldolase
Explanation:
In the metabolism of glucose( glycolysis) phosphofructokinase is an enzyme that catalyzes the conversation of fructose-6-phosphate into fructose-1,6-bisphosphate. This in turn is converted to pyruvate after various steps of enzymatic activity in the glycolytic pathway.
If phosphofructokinase experienced a mutation that interfered with substrate binding, the enzyme that is going to be most immediately impacted in terms of accessing substrate is the ALDOLASE.
Aldolase enzymes cleave fructose-1,6-bisphosphate to triose phosphates( glyceraldehyde 3-phosphate and dihydroxy-acetone phosphate) facilitating an increase in anaerobic production of ATP in muscle.
Therefore, the substrate for binding of aldolase, which is fructose-1,6-bisphosphate is lacking due to mutation of phosphofructokinase enzyme.
Plants and animals exchange materials through the process of photosynthesis and cellular respiration. Which of these statements is true about the way these two processes are related?
A.The products of photosynthesis inhibit (stop) cellular respiration.
B.The products of photosynthesis are also the products of cellular respiration.
C.The reactants of photosynthesis are also the reactants of cellular respiration.
D.The products of photosynthesis are the reactants of cellular respiration.
Answer:
the product of photosynthesis ara the reactants of cellular respiration
Sharks and dolphins are not closely related but have many similar features due to the
environment where they are found. This is an example of:
A:Convergent evolution
B:Artificial selection
C:Natural selection
D:divergent evolution
If a dog has 39 chromosomes in its egg cell, how many chromosomes are in its body cell?
helppp please i honestly don’t know
Answer:
hi
Explanation:
What two forces contribute to the creation of an ocean gyre?
The Coriolis Effect and winds.
Salinity and winds.
The Coriolis Effect and water density.
Water temperature and winds.
Answer:The Coriolis Effect and winds.
Explanation:Ocean Gyres are Circular currents in the ocean that are formed by the Earth winds and the Coriolis effect- which is caused by the rotation of the earth.
Answer:
The Coriolis Effect and winds.
Explanation:
took the quiz