Answer:
remnant of a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species.
Answer:
Explanation:
Are structures present on modern organisms that serve no purpose.
The vestigial structure are the structures which used to play an important functional role in the body of the ancestor species. But with due to coarse of evolution the structures have been adapted by the descendants but are functionless. These structures are typically in the rudimentary and degenerative condition. Appendix, wisdom tooth and sinuses are the examples of some of the vestigial structures.
All of the population in a particular area make up a?
I would guess a community.
The answer would be: A community
PLEASE HELP ME,
A feedback mechanism that serves to decrease the stimulus and bring a system back to
homeostasis is called a
A. negative feedback mechanism
or
B. positive feedback mechanism
Answer:
A. negative feedback mechanism
Explanation:
A negative feedback implies stimulation towards less change and restoration of the normal state.
A mechanism that serves to decrease the stimulus and bring a system back to homeostasis therefore shall be referred to as a negative feedback mechanism.
This is because homeostasis is the normal state, mechanisms bringing further change to homeostasis can be referred to as positive feedback mechanism and vise versa.
A feedback mechanism that decreases the stimulus and brings a system back to homeostasis is known as a negative feedback mechanism.
Explanation:A feedback mechanism that serves to decrease the stimulus and bring a system back to homeostasis is called a negative feedback mechanism. This process helps to maintain stability in our body by reversing any deviations from the normal levels. Negative feedback does this by triggering responses that counteract changes, bringing the variable back to a set point. For instance, the maintenance of blood glucose levels is a classic example of a negative feedback mechanism. After eating, blood glucose levels rise, which are detected by the pancreas that releases insulin, thereby lowering the glucose levels back to normal.
Conversely, negative feedback also works if glucose levels are too low; the pancreas releases glucagon to increase the glucose levels. The primary function of negative feedback loops is to prevent physiological variables from going beyond the normal range, essentially turning systems 'off' or 'on' to achieve stability. Hence, negative feedback mechanisms are the predominant system used to sustain homeostasis.
What controls traits and inheritance
Answer:
A persons' parents genes (and maybe Natural Selection)
I think the answer for this one might be the nucleic acids
What happens to the total population when the birth rate is at 40 and the death rate is at 15?
A. The population is moderately decreasing.
B. The population is moderately increasing.
C. The population is decreasing significantly.
D. The population is increasing significantly.
Final answer:
OPTION D.
When the birth rate is 40 and the death rate is 15, the population is increasing significantly as the number of births greatly exceeds the number of deaths.
Explanation:
When the birth rate is at 40 per 1,000 people and the death rate is at 15 per 1,000 people, the population is increasing significantly. This is because the number of births far exceeds the number of deaths, leading to a net increase in the population. According to the demographic transition model (DTM), this situation may be characteristic of a country in the second stage, where death rates have fallen but birth rates remain high, resulting in a faster population growth.
Therefore, the correct answer to the student's question is: D. The population is increasing significantly.
chloroplast is responsible for the reactions of photosynthesis true or false
Answer:
The answer is TRUE
Explanation:
Answer: true, in cellular respiration the mitochondria is what helps it.
African penguins, which inhabit the coasts of southern Africa, were classified as an endangered species in 2010. Two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. Overfishing depletes the food supply of African penguins.
The best method to reduce the threat of overfishing would be to____
1. Construct a corridor to connect penguins and fish
2. Limit the harvest of particualr fish species
3. perform a population survey on several fish species
The risk of oil spills could be reduced by increasing the use of
1. Natural resoureces
2. Renewable energy sources
3. Nonrenewable energy sources
, which should help______ oil consumption
1. Increase
2. Decrease
. If an oil spill does occur, __________ could be used to help remove the oil so the ecosystem may more quickly recover.
1. Bioremediation
2.reforesation
3. recyclng
Answer:
The correct answer to the first question is 2. Limit the harvest of particular fish species
-By limiting the harvest of the fish that penguins feed on will increase the biomass of that fish and the increased biomass of that particular fish can support the higher population of penguins.
The correct answer to the second question is -2. Renewable energy sources.
-Use of renewable source like solar energy reduce the pressure on the use of fossil fuels therefore it also decrease the risk of oil spills.
The correct answer to the third question is - 2. Decrease.
The use of a renewable source of energy decrease the oil consumption because consumption of renewable source of energy can be used as an alternative to oil consumption.
The correct answer to question four is- 1. Bioremediation
Bioremediation is the process in which the pollution is cleaned by using live organisms. Bioremediation by microbes is used to remove oil spills in oceans.
The best method to reduce the threat of overfishing would be to2)Limit the harvest of particualr fish species. The risk of oil spills could be reduced by increasing the use of 2) Renewable energy sources, which should help 2) Decrease oil consumption. If an oil spill does occur, 1)Bioremediation could be used to help remove the oil so the ecosystem may more quickly recover.
African penguins, which inhabit the coasts of southern Africa, face significant threats from oil spills and overfishing. These issues endanger their food supply and survival.
The best method to reduce the threat of overfishing would be to:To further support the conservation efforts, BirdLife South Africa and CapeNature are introducing rehabilitated African penguins to new sites to establish colonies buffered from negative effects like climate change and fluctuating fish populations.
Name two ways the bamboo uses the macromolecules it builds
Answer:
photosynthesis and lipids
Explanation:
Answer:
The correct answer is - structural support and storage for energy.
Explanation:
The bamboo is like most of the other plants produce carbohydrates by the process of photosynthesis. Plants convert glucose by polymerization into starch and polysaccharide for storage as an energy source and cellulose for cell wall structure and support.
Starch and polysaccharides provide energy by digesting the covalent bonds through the cellular respiration process. cellulose form the cell wall of the plant cells and gives it strength and support.
Thus, the correct answer is - structural support and storage for energy.
Green power comes from
A. Wind
B. Sun
C. Water
D. All of the above
Answer:D. all of the above
Explanation: because green power just means power harnessed from nature
Answer:
D. All of the above
Explanation:
Green power is from reusable sources. The Sun, wind and water are all reusable.
What happens if an enzyme is denatured? How does that impact the reaction rate?
Answer:
An enzyme is a biological protein molecule made up of thousands of amino acids. ... Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function.extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. ... Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.
What structures in the body transport blood through the cardiovascular system?
artery
vein
trachea
lungs
The arteries carry blood away from the heart; the veins carry it back to the heart.
B.veins
Answer:it’s artery , vein
Explanation:on edge 2020
Which statements describe primary consumers? Check all that apply.
A food chain is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition. A food chain starts with the primary energy source, usually the sun or boiling-hot deep sea vents. The next link in the chain is an organism that make its own food from the primary energy source -- an example is photosynthetic plants that make their own food from sunlight (using a process called photosynthesis) and chemosynthetic bacteria that make their food energy from chemicals in hydrothermal vents. These are called autotrophs or primary producers.
Next come organisms that eat the autotrophs; these organisms are called herbivores or primary consumers -- an example is a rabbit that eats grass
A primary consumer is an organism that feeds on primary producers. Organisms of this type make up the second trophic level and are consumed or predated by secondary consumers, tertiary consumers or apex predators.
What type of RNA is a major component of the structure at which protein synthesis occurs?
A. Transfer RNA
B. Ribosomal RNA
C. Messenger RNA
D. Nuclear RNA
Answer:
Answer is A because of The Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein ...
Explanation:
Ribosomal RNA (rRNA) is integral to protein synthesis as it makes up the structure of ribosomes, aligns mRNA, and catalyzes peptide bond formation.
Explanation:The type of RNA that is a major component of the structure at which protein synthesis occurs is ribosomal RNA (rRNA). rRNA is not only a structural component of ribosomes, but it also has enzymatic functions. It is essential for the proper alignment of messenger RNA (mRNA) and ribosomes, and it catalyzes the formation of peptide bonds between amino acids during protein synthesis. This makes rRNA indispensable in the translation process where proteins are synthesized according to the code carried by mRNA.
how does bacterial resistance illustrate evolution in action in modern times.
The bacterial resistance is a perfect example of how the evolution works, though it is much quicker between the bacteria than it is at the bigger and more complicated life forms. Since the modern medicine has started to be used, lot of medications have been used to kill the bacteria in order to prevent or cure diseases among the people. It has been noticed though that the bacteria needs very short period to adjust to the medications so that they are harmless to it, thus developing resistance. This is a nice example of how the bacteria is evolving in order to be able to survive and thrive in a new environment where there's something that destroys it, thus it is developing advantageous traits to be able to survive.
At the tip of each bronchiole is _____. - the epiglottis - alveoli -bronchi -the trachea
Answer:
At the tip of each bronchiole is Alveoli.
Explanation:
In respiratory system Bronchiole are an important part. They function as a passage for the transport of air coming from the nose and mouth towards alveoli. Smooth muscles present in Bronchiole control the air flow by contraction and relaxation. At the tip of each Bronchiole air sacs called Alveoli are present. The function of alveoli is to exchange oxygen and carbon dioxide to and from blood.
Answer:
alveoli
Explanation:
Why do we use the term climate change instead of global warming?
Answer:
Climate Change is more siencetific.
Explanation:
Both of the terms in question are used frequently in the scientific literature, because they refer to two different physical phenomena. As the name suggests, 'global warming' refers to the long-term trend of a rising average global temperature
Based on the data table which two species are most closely related?
Answer:
C.) B and C
Explanation:
Calculate the concentration of sugar in g/L in a solution that contains 40 g of sugar in 100 mL of solution. (There are 1,000mL in 1 L...don't forget to convert your mL to L)
Answer:
The answer is 4 g /L.
Step by Step Explanation:
As the solution has 40 g of sugar and the volume is 100 ml.
to convert the units into liter we consider the equation,
C1 V1 = C2 V2 where,
C1 = initial concentration
V1= initial Volume
C2= required concentration
V2 = final volume
So if we put the values.
(40g) (100 ml) = C2 (1000 ml)
4000/1000 = C2
4 = C2
as 1000 ml = 1 L
so the concentration will be 4 g in 1 L
Final answer:
The concentration of sugar in the solution is 400 g/L, calculated by dividing 40 g of sugar by the volume of the solution in liters (0.1 L).
Explanation:
To calculate the concentration of sugar in grams per liter (g/L), you first need to convert the volume from milliliters (mL) to liters (L), keeping in mind that there are 1000 mL in 1 L.
We have 40 g of sugar in 100 mL of solution. To find the concentration in g/L, we use the following steps:
Convert the volume of the solution from mL to L: 100 mL × (1 L / 1000 mL) = 0.1 L.
Use the formula for concentration: Concentration (g/L) = amount of solute (g) / volume of solution (L).
Plug the values into the formula: 40 g / 0.1 L = 400 g/L.
Therefore, the concentration of sugar in the solution is 400 g/L.
What is the main "hitch," or problem, in getting fusion to occur?
Answer: working with intense pressure and heat
Explanation: you would you have to work with intense pressure and heat in order to fuse two hydrogen nuclei together to create helium isotopes.
Answer:
The main problem is achieving ignition to start the reactions. Fusion reactions can occur only at extremely high temperatures.
Explanation:
What do isotherms show? Points of equal humidity Points of equal wind speed Points of equal air pressure Points of equal temperature
Answer:
points of equal temperature
Explanation:
The isotherms are closed circular lines that connect dots where the temperature has same value. These lines are very easy to read and they are very useful when it comes to reading a map that has them on, as they will provide us with the information about the temperature. The isotherms are often used in the weather programs and meteorological prognosis, so we pretty much see them every day, but unfortunately the majority of the people do not know what they are and what are they representing.
Simple Answer:
D-- points of equal temperature
Which Best describes the purpose of a bar graph?
The purpose of a bar graph is to show the relationships between different data by showing a quantity or amount for each category.
A bar graph (also known as a bar chart or bar diagram) is a visual tool that uses bars to compare data among categories. A bar graph may run horizontally or vertically. ... The graph represents categories on one axis and a discrete value in the other. The goal is to show the relationship between the two axes.
Can someone please describe how food is rearranged through chemical reactions forming new molecules that release energy as this matter moves through an organism.
Answer: I think it's photosynthesis
Explanation:
I know this is late, but this is actually an example of Cellular Respiration, the other person is wrong. While, the two are close, they are very different.
rhizobium bacteria are important in soil fertility because plants
Rhizobium bacteria fix nitrogen after becoming established inside the root nodules of plants(such as legumes)
Answer:
Rhizobia are soil bacteria that have the ability to do just that - convert nitrogen into ammonia. They multiply and form nodules attached to the plant roots of leguminous plants such as peas and beans. There are multiple species of rhizobia and not all can form nodules in all leguminous plants.
Hoped i helped lol
Explanation:
Compared to the mid-ocean ridge, sediment near the continents is: thicker thinner older the same
Answer:
older
Explanation:
thick & thin sediments are formed on old and younger crust. the sediments formed in the oceanic ridge are young, so their thickness is less than the thickness of sediments in the continental regions. also, the continental regions are near to lithogenous sediment, therefore they consists of thick sediment deposits formed since ages.
Sediment near the continents is thicker compared to the mid-ocean ridge due to the longer accumulation period and the proximity to the source of sediments, which is the erosion of continental material.
Compared to the mid-ocean ridge, sediment near the continents is thicker. This makes sense considering the geological processes at play. The oceanic crust is constantly being created at mid-ocean ridges through the process of sea-floor spreading. As the newly formed crust moves away from the ridge, more time is available for sediment to accumulate on top of it. The sediments near the mid-ocean ridges are thinner because this area is geologically younger and has had less time for sediment deposition. In contrast, sediments adjacent to the continents can be much thicker, as they often consist of eroded material from the continent itself, and they have accumulated over a much longer period, given that continental crust can be billions of years old.
Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
Hi!
The succsesful gene, like a camouflage gene, would increase in the species.
Hope this helps!
Answer:
the frequency of the genes in the population
Explanation:
took the tst
Which is a difference between a compound light microscope and a scanning electron microscope?
A.The scanning electron microscope can view the internal part of a cell, while the compound light microscope views the surface of a cell.
B.The scanning electron microscope specimens can be stained for contrast, while the compound light microscope specimen appears black and white.
C.The scanning electron microscope is used for dissections, while the compound light microscope is not.
D.The scanning electron microscope uses an electron beam and a layer of gold to view the surface of the cell, while the compound light microscope uses light and lenses.
I need the answer right away please.
Answer:
The answer is D.The scanning electron microscope uses an electron beam and a layer of gold to view the surface of the cell, while the compound light microscope uses light and lenses.
Explanation:
Electron microscopes use an electron beam instead of a light beam to form an image, so they can only offer black and white images; while the compound microscope is based on optical lenses, which is also known as a light microscope; It has a lens system that focuses the light from the source towards the small point of the specimen.
The difference between a compound light microscope and a scanning electron microscope is: D. The scanning electron microscope uses an electron beam and a layer of gold to view the surface of the cell, while the compound light microscope uses light and lenses.
A microscope can be defined as an optical device that is typically used to make an enlarged (magnified) image of a minute (small) object in order to reveal all the littlest information about the object that cannot be seen by the natural human eye.
Generally, there are different types of microscopes and these include;
Inverted microscope.Polarizing microscope.Compound light microscope.Scanning electron microscope.A compound light microscope refers to an upright microscope that has more than one lens and a visible light source to enlarge an image of a small object.
On the other hand, a scanning electron microscope is a type of microscope that is designed to have a focused high-energy electron beam and a layer of gold to scan the surface of a specimen.
In conclusion, difference between a compound light microscope and a scanning electron microscope is that the former uses light and multiple lenses while the latter uses an electron beam and a layer of gold to view the surface of a specimen.
Read more: https://brainly.com/question/20376243
Four different segments of a DNA molecule are represented below
the answer is false.
what advantages did sweat glands and less body hair provide in our ancestors environment?
Early man were mainly hunters and gatherers. These tasks were extraneous hence demanded a lot of energy. The body required to lose some heat expended during high cellular respiration (such as during hunting). Therefore, sweat glands and less body hair allowed for heat to lost effectively collagen the body to homeostatic temperatures.
the forrested areas of new england today resemble this satellite image of a connecticut location. rapid population growth directly impacts biodiversity on Earth by ALL BUT one of these issues. That is
Answer:
The correct answer is D.) fossil fuel consumption
Explanation:
Answer: The correct answer is D
Which of these is a characteristic of sexual reproduction
Answer:
hello, are there any options?
Answer:
C: it results in offspring with genetic variation
Explanation: Because I got it right!
Identify each of the following molecules as reactants or products of the Krebs cycle.
Answer:
Reactants: Acetyl CoA, NAD+, FAD
Products: Carbon dioxide, NADH, FADH2
Explanation:
Krebs cycle is the second stage of aerobic cellular respiration. Pyruvate enters the Krebs cycle as acetyl CoA. Decarboxylation of acetylCoA during Krebs cycle forms CO2 and H2O. The redox reactions of the cycle forms NADH and FADH2 which in turn enter the oxidative phosphorylation to drive ATP synthesis.
The reactant in the Krebs cycle is Acetyl CoA, and the products are carbon dioxide, NADH, FADH2, and ATP or GTP.
Explanation:The Krebs cycle, also known as the citric acid cycle or TCA cycle, is a central metabolic pathway that occurs in the mitochondria of eukaryotic cells. It oxidizes acetyl-CoA derived from carbohydrates, fats, and proteins, producing ATP, NADH, FADH2, and carbon dioxide while facilitating the release of stored energy for cellular processes. The molecules that are products of the Krebs cycle are:
Carbon dioxideNADHFADH2ATP or GTPThe reactant in the Krebs cycle is:
Acetyl CoALearn more about Reactants and products of the Krebs cycle here:https://brainly.com/question/17928326
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