A human cell in prophase of mitosis can be distinguished from a human cell in prophase I of meiosis by the presence of (A) paired homologous chromosomes in the meiotic cell. (B) kinetochores in the mitotic cell (C) a spindle in the mitotic cell (D) twice as many chromosomes in the mitotic cell (E) half as many chromosomes in the meiotic cell
Answer:
B
Explanation:
A human cell in prophase of mitosis can be distinguished from a human cell in prophase I of meiosis by the presence of paired homologous chromosomes in the meiotic cell.
CELL DIVISION:
Cell division involves two processes namely: mitosis and meiosis. Mitosis results in two daughter cells that are genetically identical to one another. Meiosis, on the other hand, results in four daughter cells that are genetically different from one another. Mitosis and meiosis as types of cell divisions involves phases namely: prophase, metaphase, anaphase and telophase. The major difference between prophase of mitosis and prophase I of meiosis is that homologous chromosomes, which are similar but non-identical chromosomes from each parent, are paired.Learn more about prophase of mitosis and meiosis at: https://brainly.com/question/23718222?referrer=searchResults
The map of a walking trail is drawn on a coordinate grid with three points of interest. The trail starts at R(−2, 4) and goes to S(3, 4) and continues to T(3, −1). The total length of the walking trail is ___
Answer:
The total length will be "10 units". A further explanation is given below.
Explanation:
The given points are:
R(−2, 4)
S(3, 4)
T(3, −1)
On applying the distance formula,
⇒ [tex]RS=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
⇒ [tex]=\sqrt{(3-(-2))^2+(4-4)^2}[/tex]
⇒ [tex]=\sqrt{(3+2)^2+(0)^2}[/tex]
⇒ [tex]=\sqrt{25}[/tex]
⇒ [tex]=5 \ units[/tex]
and,
⇒ [tex]ST=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
⇒ [tex]=\sqrt{(3-3)^2+(-1-4)^2}[/tex]
⇒ [tex]=\sqrt{0+(-5)^2}[/tex]
⇒ [tex]=5 \ units[/tex]
Now,
The total trail length will be:
= [tex]RS+ST[/tex]
= [tex]5+5[/tex]
= [tex]10 \ units[/tex]
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What might be the evolutionary significance of the switch from asexual to sexual reproduction that occurs in some species when the environment becomes unfavorable
Explanation:
The evolutionary significance of the switch from asexual to sexual mode of reproduction in some species under unfavorable environmental conditions is because of the need of More mutations and variations can be made in the species. The asexual mode causes the making the same copy so when there needs to be change.
The reviewers suggested that you think more carefully about your hypothesis and experimental design. For a chemical to make a good cancer treatment, it is not enough that it harms cancer cells. The chemical needs to have a selective effect on cancer cells--that is, it needs to harm cancer cells much more than it harms normal (noncancerous) cells.
You decide to run a new experiment to test the hypothesis that the fungus chemical harms cancer cells selectively. In this controlled experiment, you will test both cancer cells and normal cells under identical conditions. What data would support this hypothesis?
Predict the expected results for cancer cells and normal cells by choosing the correct graph lines and dragging them onto the two graphs.
Answer:
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Answer:
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How does an increase in pressure affect a rock’s melting temperature?
Answer:
As pressure on a rock increases, its melting point increases as well. ... As water content increases, the melting point decreases. Partial Melting. The process whereby some minerals melt at low temperatures while other minerals remain solid.
Explanation:
I got it off on quizlet
groups of specilized cells working together are called
Answer:organs
Explanation:
Plsssss help rn and pls don’t guess.
In two to three sentences, describe why Prunnett squats do not accurately demonstrate how asexual reproduction passes on traits.
Answer:
Punnett Squares are unable to predict the offspring of an asexual organism because there is only one parent from which the offspring can receive genes from. The whole point of a Punnett Square is the fact that it covers all possible offspring outcomes besides mutations from the usual two parents.
In this lab, we discussed several explanations for the evolution of bipedalism. Each hypothesis has its drawbacks and has been criticized. It’s your turn to hypothesize why our lineage evolved bipedalism. Describe some of the advantages of bipedalism (be sure to think about what life would have been like for our ancestors millions of years ago when bipedalism evolved, including their risk of predation, food availability, environment, etc.). Are there any disadvantages to bipedalism? If so, what are they? Taking into account these possible advantages and disadvantages, why do you think bipedalism might have evolved?
Answer and Explanation:
One of the main disadvantages of bipedalism is that it makes it impossible for mothers to carry their young efficiently. This is because bipedalism stimulates the spine's reaction, which may cause the puppies to slip and stay behind, or to be caught by predators. Thus, bipedalism impairs the maintenance of the species, as it leaves the puppies vulnerable.
Bipedalism also causes a decrease in the speed of the body that must be fighting gravity at all times. This can hinder the hunting and flight of predators, which, again, impairs the survival of the species.
What is the main function of gas exchange
A) To remove carbon dioxide and supply oxygen to
the body
B) To remove oxygen from the body
C) To supply carbon dioxide and remove oxygen
from the body
D) To supply water to the body cells
Answer:
A.
Explanation:
We exhale carbon dioxide and inhale oxygen.
Answer:
Gas exchange allows the body to replenish the oxygen and eliminate the carbon dioxide So the answer is A
Neurotransmitters are defined by four essential characteristics. These are: Neurotransmitters are synthesized within presynaptic neurons. Depolarization of a neuron results in the release of a neurotransmitter, which exerts a multitude of actions on the postsynaptic neuron. Their action on postsynaptic neurons can be replicated by administering a drug that mimics the activity of the endogenous neurotransmitter. Their action in the synaptic cleft is terminated by a specific action. A, C, and D only
Answer:
The correct answer is A, C, and D only.
Explanation:
A neurotransmitter is a biomolecule, generally synthesized by neurons, which is poured from vesicles in the presynaptic neuron into the synaptic gap and produces a change in the action potential of the postsynaptic neuron. Depending on the nature of the neurotransmitter, this can be synthesized in the neuronal soma or in the nerve endings. Some neurotransmitters are synthesized directly in nerve endings thanks to enzymes that have been synthesized in the soma and transported to these endings. Through the interior of the axon flows a current of substances free or enclosed in vesicles, which can be precursors of both neurotransmitters or their enzymes, called axonal flow.Another characteristic of the transmitter function in each of the substances commonly accepted as neurotransmitters is that when administered exogenously as a drug that in reasonable concentrations perfectly mimics the effects of the endogenously released transmitter.
Neurotransmitters should be defined by four essential characteristics. It involved the A, C, and D only.
What are Neurotransmitters?Neurotransmitters refer to the chemical messengers in the body that should transform the message from the nerve cell. Also, it should be synthesized in neurons and stored in the presynaptic terminal. It should be the vital attribute at the time when the chemical should mimic the activity of endogenous due to which it gets a similar response. Also it eliminates the activation site.
Learn more about neurons here: https://brainly.com/question/16324614
Question 6
In the lac operon, lacZ would be expressed if glucose and lactose levels are both high,
True
False
Answer:
Poyo
Explanation:
true
Write a paragraph using all of the words above.
Answer:
Explanation:
Kindly download the attachment for the answer (a paragraph) to this question. All words requested are used and are underlined as appropriate (for tracking) and are detailed for personal understanding. Some of the words are necessarily repeated so as not to cause confusion with other preceding words.
1. Describe a technology, not yet invented, that could increase the human carrying capacity. 40 Chapter 4 Population Ecology
Answer:
a twinkle, it can bright up everything and make wishes come true whenever.
Explanation:
i have no idea
When the chestnut blight fungus, Cryphonectria parasitica, first entered Harvard Forest its population was growing exponentially. Anita MacTavish, a graduate student working on chestnut blight, estimated that the ANNUAL per capita growth rate (r) of the fungus 3.2 new cankers per year. Of Cryphonectria parasitica population size (Measured in number of cankers) was 313 in 1935, predict the population size in 1938.
Answer:
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ANSWER ASAP PLEASE
What impact do trees have on the food web?
Answer:
Abiotic factors such as latitude and temperature can impact biotic aspects of food web structure like the number of species, the number of links, as well as the proportion of basal or top species. These biotics factors can in turn influence network-structural aspects like connectance, omnivory levels or trophic level. In this way, plants make, or produce, the beginnings of most of the food energy on Earth. This is why plants are called producers. They use some of the food energy to carry out their own functions, and store the rest of the energy in their leaves, stems, roots and other parts.
Explanation:
Answer:
"plants make, or produce, the beginnings of most of the food energy on Earth. This is why plants are called producers."
- Sac Tree Foundation
"Trees contribute to their environment by providing oxygen, improving air quality, climate amelioration, conserving water, preserving soil, and supporting wildlife."
- Sava Tree
define compound and explain also
Proteins are created by the
Golgi body
mitochondria
rough ER
smooth ER
1. What are viruses made up of?
Answer: bateria
Explanation:
Answer: A virus is made up of a core of genetic material, either DNA or RNA, surrounded by a protective coat called a capsid which is made up of protein.
Explanation:
When a strip of bark is removed all the way around the trunk of a tree, the tree dies. Explain why.
Answer:
Complete girdling (the bark removed from a band completely encircling the tree) will certainly kill the tree. The reason for damage due to girdling is that the phloem layer of tissue just below the bark is responsible for carrying food produced in the leaves by photosynthesis to the roots.
Which statement about the behavior of
living things is true?
Answer:
whats the options
Explanation:
?
HURRY PLEASE. Provides energy to an organism to conduct cellular processes A. water B. air C. food D. living space E. carbohydrates
Answer:
Carbohydrates
Explanation:
Through photosynthesis, certain organisms convert solar energy (sunlight) into chemical energy, which is then used to build carbohydrate molecules. The energy used to hold these molecules together is released when an organism breaks down food. Cells then use this energy to perform work, such as cellular respiration.
Manure can be used to create beneficial soil depletion.
True
False
In the Hershey/Chase experiment phage proteins and DNA were radioactively labeled and allowed to inject coding material into bacteria. It was found that only radioactively labeled DNA was present in the bacterial cells which had been transformed. If radioactively labeled protein had been discovered in the transformed cells, what would this have told us about the molecules acting in genetics
A virus is made of two main components. A proteic capsid and genetic material. The Hershey/Chase experiment demonstrated that the virus introduces it's genetic material(DNA) inside the host cell to force it to make more viruses. This proved that genetic information is stored in DNA. If the marked proteins were found in the host cell that would have meant that proteins carry genetic information which they don't.
What product has wheat flour as its substrate and yeast as the microbe? *
Answer:5
Explanation:
Wheat flour contains starch. The starch is hydrolysed to glucose. Glucose is used by yeast(saccharomyces cerevisae) to make ethanol.
C6H12O6(glucose from wheat flour)---(yeast)-->2C2H5O(ethanol)+2CO2
Ethanol is the main product
What is a cyclone called that generates winds of 200 kmph and rotates in a counter-clockwise movement in the Pacific Ocean?
1 a typhoon in the southern hemisphere
2 a hurricane
3 a cyclone
4 a typhoon in the northern hemisphere
Answer:
a typhoon in the northern hemisphere.
Answer:
typhoon in the northern hemisphere
Explanation:
trust me im black
in this 4 trophic level food chain, the penguin will bioaccumulate the most toxin due to the quantity of Krills it needs to eat
Answer:
yes what you put is all in the food chain
Explanation:
What is matter? help mee
Answer:
Matter is anything that has mass and takes up space.
Explanation:
Matter can be anything that are solid, liquid or gas. However, anything that does not have mass and take up space, such as light, are not matter.
Answer:
A matter is anything that occupies space or mass, for example, our body is a matter because it is taking up space. Matters can be solid, liquid, or gas
i need help ;(((((((
Answer:
A. Chloroplast
Explanation:
Chloroplast, often known as the kitchen of the cell, is where photosynthetic reactions combining light energy from the Sun into chemical energy [Glucose] that is stored as food. They contain a Green Color Pigment called 'Chlorophyll' that initiates the process, but Chlorophyll isn't an organelle, in fact, it is one of the elements of Chloroplasts. Similarly, Thylakoids are membrane-bound elements inside Chloroplast that aid in photosynthesis. While Mitochondria, [Power Houses Of Cells] generate energy for various processes in cells through ATP-Generations.
How do the colors of light affect photosynthesis? Which color was most efficient, medium and least?
Answer:
blue is the most efficient while green is the least efficient
Explanation:
It is well known that different photosynthetic pigments can absorb light at different wavelengths. Thus, the amount of light absorbed during photosynthesis depends on the color of the source light. The leaves have green color because chlorophyll is a photosynthetic pigment that absorbs light at all wavelengths and reflects green light. The best wavelengths are those at 430–450 nm (blue range) and 600–700 nm (red range), thereby photosynthesis is most efficient when plants are illuminated by light sources that emit blue and red lights. Moreover, sources that emit light at the green wavelength are least efficient for photosynthesis.