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Related Questions
What might be the evolutionary significance of the switch from asexual to sexual reproduction that occurs in some species when the environment becomes unfavorable
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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.
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.
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Answer:
ansetsjejrjrirjdjjdjdjd
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.
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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.
define compound and explain also
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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
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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
groups of specilized cells working together are called
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Answer:organs
Explanation:
1. What are viruses made up of?
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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:
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 ___
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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]
what the number 42 to u
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HURRY PLEASE. Provides energy to an organism to conduct cellular processes A. water B. air C. food D. living space E. carbohydrates
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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.
Which statement best describes how some trees respond to decreasing
temperatures and shorter days in the fall?
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Answer: they drop their leaves and go into dormancy
Explanation:
Answer:
they drop their leaves and go into dormancy[
Explanation:
With a light-sensitive chemical, plants can sense the differences in day length. For example, in the fall, when the days start to get shorter, the trees sense that there is less sunlight. The plant is stimulated, and it sends messages telling the leaves to change colors and fall.
in this 4 trophic level food chain, the penguin will bioaccumulate the most toxin due to the quantity of Krills it needs to eat
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Answer:
yes what you put is all in the food chain
Explanation:
3 a process in which complex organic molecules are synthesized (created) using carbon dioxide, water, and light energy capture by chlorophyll?
A cellular respiration
B chloroplast
C mitochondria
Dphotosynthesis
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Answer:
Photosynthesis
Explanation:
Photosynthesis is the process by which plants manufacture food substances from carbon (iv) oxide and water using energy from sunlight
Which statement about the behavior of
living things is true?
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Answer:
whats the options
Explanation:
?
How do the colors of light affect photosynthesis? Which color was most efficient, medium and least?
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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.
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?
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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 planet is this? I'll give brainliest!
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How does an increase in pressure affect a rock’s melting temperature?
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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
Manure can be used to create beneficial soil depletion.
True
False
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Write a paragraph using all of the words above.
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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.
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
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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
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
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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.
Proteins are created by the
Golgi body
mitochondria
rough ER
smooth ER
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in the membranous skeleton ----sheath surrounds the central nervous system I perineural ii perineurium iii peritoneum iv perichondrium
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The answer is perineural since peri means around and neural CNS
Match the characteristics below to either seedless or seed plants.
________vascular plants only
________bryophytes and pteridophytes
________reproduce by spores
________ gymnosperms and angiosperms
________ vascular or nonvascular plants
________ monocots and dicots
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Answer:
Seed
Seedless
Seedless
Seed
Seedless
Seed
Explanation:
The matching of characteristics with respect to either seedless or seed plants are as follows:
Seed plants: Vascular plants only.Seedless plants: bryophytes and pteridophytes.Seedless plants: reproduce by spores.Seed plants: gymnosperms and angiosperms.Seedless plants: vascular or nonvascular plants.Seed plants: monocots and dicots. What are Seedless plants?Seedless plants may be defined as those plants that do not hold seeds for propagation. They are completely devoid of seeds.
Seedless vascular plants are those plants that possess vascular tissue but do not construct flowers or seeds. Such types of plants generally reproduce by the utilization of haploid and unicellular spores instead of seeds.
The example of such types of plants commonly include ferns, mosses, liverworts, etc. They included the categories of plants like bryophytes and pteridophytes.
Seed plants generally contain well-defined seeds and the process of reproduction generally occurs with the help of seeds instead of spores. They generally included plant categories like gymnosperms and angiosperms.
Therefore, the matching of characteristics with respect to either seedless or seed plants is described above appropriately.
To learn more about Seedless, plants, refer to the link:
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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
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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
Question 6
In the lac operon, lacZ would be expressed if glucose and lactose levels are both high,
True
False
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Answer:
Poyo
Explanation:
true
When a strip of bark is removed all the way around the trunk of a tree, the tree dies. Explain why.
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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.
1. Describe a technology, not yet invented, that could increase the human carrying capacity. 40 Chapter 4 Population Ecology
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Answer:
a twinkle, it can bright up everything and make wishes come true whenever.
Explanation:
i have no idea
Road construction has isolated a small population of a beetle population from the main population. This newly isolated population has very different allele frequencies than the main population, most probably because
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Answer:
genetic drift
Explanation:
The newly isolated population of beetle would have very different allele frequencies than the main population because of genetic drift.
Genetic drift refers to a change in the frequencies of alleles in a population over generations brought about by pure chance. Genetic drift can cause a bottleneck or founder effect. A bottleneck effect is a temporary decrease in the genetic diversity of a population while the founder effect refers to a decrease in the genetic variability of a new population formed from a small number of individuals that get separated from a larger population.
Hence, the newly formed population of beetles would have lower allele frequencies than the main population due to the founder effect brought about by genetic drift.