Answer:
The correct answer is -
variation, over population and adaption.
Explanation:
Natural selection is the process to which the various species and populations are able to adapt and change according the environmental changes. It is affected by three main factors that are variation, over population and adaption.
Variation: varion is one of the factor that pushes the population to change towards the beneficial variation in the population for their survivability and reproducing theirselves.
Overpopulation: over population increases the competition amon population and there fore there resources become limited so few have to change or their ways of utilizing resources.
Adaption: Adapting the change takes place due to any situation in environmental that put stress on the population allow them to adapt according the change or they will extinct.
Answer:
Variation, overpopulation, and adaption
Explanation:
I can confirm this is the right answer, because I just did the assignment.
It is impossible for sperm to be functional (able to fertilize the egg) until after ________. Group of answer choices
Answer:
The answer is "they undergo capacitation"
Explanation:
Sperm migrate through uterine contractions and the energies of its flagella to the uterine tube. In sperm motility, reverse peristalsis is engaged in the uterus and uterine tubes. For a sperm cell to fertilize an egg, it takes approximately 24 hours. The surface of the egg changes as the sperm penetrates the egg, therefore no sperm is allowed within. The kid is fully genetic, including whether it's a boy or a girl at the time of fertilization. Until they are trained it is difficult for sperm to be working.
What is the product P
what is a cell ? how many types of cells are there?
Cell is the living blocks of life. They form the structural
and the functional unit of our life, that is a group of cell
forms tissue, a group of tissue forms organ, a group of
organs form organ system and finally a group of organ
systems form a complete organism / individual.
And there are two types of cell
1/ eukaryotic cell ( consists of the plant cell and the animal
cell )
2/ prokaryotic cell (... I don't know man )
The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a(n)
Answer:
epimysium
Explanation:
Epimysium is a sheath of fibrous elastic tissue surrounding a muscle.
It is a layer of dense irregular connective tissue which ensheathes the entire muscle and protects muscles from friction against other muscles and bone
A(n)____is the product of gametes from two different
sources.
Answer:
I guess the answer is meiosis
Explanation:
Maybe yes or no but am 98% sure so it's ur lucky day. haha
Question in the picture
Answer:
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Mendel chose pea plant (Pisum sativum) for his experiment. Write the reasons:
Answer:
Mendel choose pea plant (Pisum sativum) for his experiment due to following reasons:
(i) availability of contrasting traits of several characters.
(ii) Their life span is short.
(iii) Normally self-pollination occurs but cross-pollination can also be done by artificial means.
(iv) Large no of seeds produced.
Mendel choose pea plants for his experiments because of the following reasons:
(i) The flowers of this plant are bisexual.
(ii) They are self-pollinating, and thus, self and cross-pollination can easily be performed.
(iii) The different physical characteristics were easy to recognize and study.
ANALYZE How could scientists use data from tree rings to learn more about ecosystems
in the past? Use evidence from the tree ring in Figure 2a to support your answer.
The spinal cord extends from the foramen magnum of the skull to the first or second lumbar vertebra, where it terminates in the __________.
Answer:
conus medullaris
Explanation:
What conclusion can be drawn concerning an inhibitor if the Km is the same in the presence and absence of the inhibitor
Answer: The inhibitor has a structure that is not similar to the substrate.
Explanation:
Enzymes are molecules that act as catalysts of chemical reactions, accelerating the reaction rate without affecting the equilibrium of the reaction, as long as it is energetically possible. They act on molecules called substrates, which are converted into different molecules called products.
Enzymes are very selective with their substrates and are also susceptible to inhibitors which are molecules that regulate enzyme activity, inhibiting its activity. Inhibitors can be classified as reversible and irreversible. Irreversible inhibitors bind covalently to the enzyme with no possibility of reversing the modification they make, while reversible inhibitors bind reversibly to the enzyme and can reverse the modification.
A reaction occurring under the control of an enzyme reaches equilibrium much faster than the corresponding uncatalyzed reaction. The reaction, i.e. the production of products, can reach a saturation point if the substrate concentration increases too much, decreasing the concentration of free enzyme, which becomes the form with bound substrate. At the maximum rate (Vmax) of the enzyme, all active sites of the enzyme have substrate bound, and the amount of complexes is equal to the total amount of enzyme. The amount of substrate required to obtain a given reaction rate is also important and this parameter is given by the Michaelis-Menten constant (Km), which is the concentration of substrate required for an enzyme to reach half its maximum velocity. Each enzyme has a characteristic Km value for a given substrate, which can tell us how close the binding between the substrate and the enzyme is. Then, inhibitors bind to the substrate and increase the Km value as it interferes with the binding between substrate and enzyme. In this case, the Km value of the enzyme is the same in the presence and absence of the inhibitor, this means that there is no change, because the inhibitor has a different structure to the substrate, it does not bind and does not change the Km value.
I NEED HELP PLS!!!! I WILL MARK AS BRAINLIEST!!!
In some cases, people who test positive for genetic testing can receive preventive treatments. For example people who test positive for the breast cancer genes BRCA1 and BRCA2 can have a preventive mastectomy (breast removal surgery) before they develop the disease. In other cases, no preventive treatments are available, but frequent monitoring can help detect a disease earlier, when it's more easily treated.
What ethical or professional concerns does a health-care professional need to address when he or she has a patient who wants to prematurely treat a genetic disease? Do you think genetic testing should be part of normal preventive healthcare? Why or why not.
Answer:
Yes because genetic testing will provide enough evidice for the genetic disease. If you do so you can find diseases before they have long lasting effects on the hosts body
Explanation:
Select the correct answer.
What conclusion can you make about the skeletal structure of these two organisms?
A.
They share a common ancestor, but they’re different species.
B.
They’re the same species.
C.
They’re different species with no evolutionary relationship.
D.
The four-legged organism directly evolved from the two-legged organism.
Answer:
A. They share a common ancestor, but they’re different species.
Explanation:
Sometimes individuals at one extreme of a phenotypic distribution are favored in a particular environment, for example, selection will strongly favor insects that have very high resistance to an insecticide. In such cases, the type of selection that operates is
Answer:
directional
Explanation:
We define directional selection as a type of natural selection whereby a phenotype is favored in preference to other phenotypes hence, the entire allele in the population will tend to shift in that particular direction .
This is clearly demonstrated in a scenario whereby insects that have very high resistance to an insecticide tend to survive better in an environment compared to other insects that do not exhibit this phenotype.
What is an individual who has a recessive, disease-causing allele at a particular gene on one chromosome and a normal allele at that gene on the other chromosome?
A.An expressed individual
B.A carrier
C.A deleterious allele owner
D.Heterozygote individual
Which structure is found in all cells
cytoplasm im pretty sure
plasma membranes
dna
ribosomes
cytoplasm
lumenlearning dot com
Describe telephase (IN YOUR OWN WORDS)
-Thank you!
Answer:
Telophase is the last step of cell division, when chromosomes move in opposite directions so two new cells can be formed from one. When a cell is finishing the process of meiosis, it goes through a phase in which it's basically getting ready to split into two new cells telophase.
Explanation:
Under which circumstance will a disease not spread beyond a few individuals in a population? If the rate of infection is lower than the rate of recovery, the reproductive ratio of the infection will be less than 1. If the rate of recovery is lower than the rate of infection, the reproductive ratio will be greater than 1. If the primary case infects a large number of people very quickly, the reproductive ratio will be less than 1. If the reproductive ratio is greater than 1, only a few individuals in a population will be infected.
Answer:
The correct answer is - If the rate of infection is lower than the rate of recovery, the reproductive ration of the infection will be less than 1.
Explanation:
The rate of infection is the chances or occurence of new cases of infection in a particular population over a particular time period and the rate of recovery is the occurence of the recovery of an individual case over a period of time. These two rates determines if a disease or infection is spreading faster or lesser.
The higher the rate of infection to rate of recovery it is more lkely to be spreading rapidally and higher the rate of recovery the infection not spreading beyond few individuals in the population. In the later case, the reproductive ration of the infection will be less than 1.
indian National congress was founded. _______
a) 1877
b) 1915
c) 1885
d) 1947
Answer:
{Indian National congress was founded in 1885.}
"Hope this Helpful."The water cycle is a closed system, meaning no water enters from beyond the system nor leaves the
system. What does that say about the importance of keeping water on Earth free from pollution?
Answer:
there are no possible changes adaptations
Explanation:
what i mean by that is if a substantial amount of pollution enters the water cycle its going to be nearly impossible for it to get out
If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.
What is groundwater?Groundwater has been defined as water present in the underground water below the soil as well as in the cracks of the earth. The percentage of freshwater in the world would be 30%. There are mainly three types of groundwater and these are hand-dug wells, as well assprings, and drilled boreholes.
The water stored under the ground has obtained from the rain and stored in the ground so that it can be used later. Ground water has very clean and fit for drinking and the reason could be the soil present on top and work as filter and the groundwater is free from all microorganisms.
Therefore, If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.
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Question 17 of 30
15 ~ 94%
Complete the following sentence. Iron usually forms only an _____
magnet that loses its
magnetism when moved away from a magnetic source. What one word completes the sentence?
Enter your answer
Answer:
Iron usually forms an
Induced magnet
Answer:
Temporary or Induced Magnets.
Explanation:
Temporary magnets: These magnets are made of soft iron that has temporary magnetic properties. These magnets behave as permanent magnets when introduced to a magnetic field but lose magnetism when moved away from the magnetic source.Temporary magnets are usually used in radio, electric motors, phones.They are extensively used as electromagnets to produce electricity. The demagnetizing property of electromagnets by altering the intensity of electric current helps in a lot of practical applications based on controlled situations.For more information:
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Drag the tiles to the boxes to form correct pairs.
Earth's early atmosphere was made of various gases that were unsuitable for life on Earth. Match the following elements with how they ended
up in the current atmosphere.
nitrogen
carbon dioxide and water vapor
helium
released into the atmosphere during volcanic eruptions
formed due to the transformation of ammonia (NH3)
mostly escaped Earth's atmosphere due to it is light mass
Answer:
Nitrogen ---- formed due to the transformation of ammonia (NH3)
carbon dioxide and water vapor ----- released into the atmosphere during volcanic eruptions
helium ------ mostly escaped Earth's atmosphere due to it is light mass.
Explanation:
Nitrogen are formed due to the transformation of ammonia (NH3) due to action of beneficial nitrogen, carbon dioxide and water vapor are released into the atmosphere during volcanic eruptions and helium mostly escaped Earth's atmosphere due to it is light mass. Helium has atomic mass i.e. 2 which is second lowest after hydrogen mass so due to its lighter weight it can't be stay in the atmosphere near to earth.
Answer:
Nitrogen - formed due to the transformation of ammonia (NH3)
carbon dioxide and water vapor - released into the atmosphere during volcanic eruptions
helium - mostly escaped Earth's atmosphere due to it is light mass.
what is photo synthesis ?
Answer:
Photosynthesis is the process by which plants convert sunlight into energy.
Explanation:
Genetic drift in a population affects the gene pool in which of the following ways?
decrease in genetic variation
increase in genetic variation
increased in mutations
decreased in gene flow
Answer:
Sometimes, there can be random fluctuations in the numbers of alleles in a population. These changes in relative allele frequency, called genetic drift, can either increase or decrease by chance over time. ... Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool.
Genetic drift in a population affects the gene pool by decreasing genetic variation.
What is genetic drift?Genetic drift is a mechanism of evolution that occurs due to random fluctuations in the frequency of alleles (alternative forms of a gene) in a population. It refers to the random changes in the frequency of alleles that occur by chance alone, rather than through natural selection or other selective pressures.
Genetic drift is more likely to occur in smaller populations, where chance events can have a greater impact on the frequency of alleles. The effects of genetic drift can result in the loss of certain alleles from a population over time, or the fixation of one allele in a population, meaning that it becomes the only allele present at that particular gene locus.
Two forms of genetic drift are bottleneck effect and founder effect. In the bottleneck effect, a sudden reduction in population size can cause the loss of genetic diversity, while in the founder effect, a small group of individuals colonizes a new area, leading to the establishment of a new population with a limited subset of the genetic diversity present in the original population.
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Which three elements do plants get from minerals found in soil
Answer:
The primary nutrients are nitrogen, phosphorus and potassium. You may be most familiar with these three nutrients because they are required in larger quantities than other nutrients. These three elements form the basis of the N-P-K label on commercial fertilizer bags.
Explanation:
What are the products of photosynthesis?
C6H12O6 + 6H20 + 602
C6H12O6 + 302 + 6H20
C6H12O6 + 302 + 3H20
C3H6O3 + 602 + 6H2O
Answer:
the first answer
Explanation:
C6H12O6 + 6H2O + 6O2
What is a variegated leaf
Answer:
The term, "variegated" is applied to a flower or, more often, a leaf that has more than one color. Most often, it will be two-toned (that is, bi-colored). Often this will mean the foliage is blotched, striped, or bordered with a lighter color than that on the rest of it (or vice versa). The term is also applied more broadly to a whole plant that bears such leaves or blossoms. The corresponding noun for this definition is "variegation."
Which direction do
rock fragments eroded
by runoff generally
travel?
A downhill
B uphill
C uphill at certain times
of the day and
downhill at other
times of the day
D horizontally until
they reach an
obstacle that they
cannot pass over
Answer:
A downhill
Explanation:
A runoff happens when water drags sediment from a rock over a sloping terrain. Thus, water drags the eroded fragments of a rock in favor of gravity, pushing these fragments downwards. This is very common in mountainous and steep regions, without vegetation cover, where erosion caused by runoff is very high.
Select the correct answer. During which stage of fetal development do the heart and lungs of a fetus become fully developed and functional? A. first trimester B. second trimester C. fertilization D. third trimester
Answer: B the second trimester
what is a tropic level? give an example
Answer:
Trophic Level Definition. A trophic level is the group of organisms within an ecosystem which occupy the same level in a food chain.
Examples of Trophic Level. Primary producers, or ”autotrophs”, are organisms that produce biomass from inorganic compounds
Explanation:
15. Which protein (an integral membrane protein, peripheral protein or lipid-linked protein) is easier to remove from a biological membrane
the memberane which is easier to remove from a biological membrane is integral membrane
