Answer:
The cell theory states that all biological organisms are composed of cells; cells are the unit of life and all life comes from preexisting life.
Explanation:
your mom
Juan has collected a cricket. Which question can a dichotomous key help him
answer?
A. Are crickets attracted to porch lights?
B. Which species of cricket is this?
O C. Which species of cricket is the most popular?
O D. How many times do crickets chirp per minute?
The question that can be answered by a dichotomous key is the question; Which species of cricket is this?
What is a dichotomous key ?The term term dichotomous key has to do with the identification of a species based on its characteristics.
The question that can be answered by a dichotomous key is the question; Which species of cricket is this?
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What period has the least amount of biodiversity
A . Neogene
B . Cambrian
C .Permian
D . Triassic
Answer:
Permian has the last amount of biodiversity since the period was covered with lava and ashes
urgent please answer
The Punnett square illustrates a cross for color of the flower.
Based on the phenotypes and genotypes of these offspring. It is clear that purple flower color allele is
and the parents are
dominant
polygenetic
recessive
ntum. All rights reserved.
hp
Answer:
All right reserved
Human skin color is a good example of polygenic (multiple gene) inheritance. Assume that three "dominant" capital letter genes (A, B and C) control dark pigmentation because more melanin is produced. The "recessive"alleles of these three genes (a, b & c) control light pigmentation because lower amounts of melanin are produced.
hope it will help
Here, from the cross of the purple and white flower, all offspring are purple, which indicates that the purple color is dominant in nature and is present in Option A.
What is Punnett Square?The Punnett square is a tool used to predict the probability of offspring inheriting specific alleles from their parents. If all of the offspring exhibit the same phenotype (such as purple flower color), it is likely that the parents both carried at least one dominant allele for that trait. This would mean that the purple flower color allele is dominant. Here, the parents are both purple and white, so all the offspring are dominant in nature.
Hence, from the cross of the purple and white flower, all offspring are purple, which indicates that the purple color is dominant in nature and is present in Option A.
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complete question is below
The Punnett square illustrates a cross for color of the flower (purple- parent, white -parent). Based on the phenotypes and genotypes of these offspring (all purple), it is clear that purple flower color allele is
A.) Dominate
B.)polygenetic
C.) recessive
Which of the following is not a source of atmospheric carbon?
O Fossil fuel burning.
O Dead decaying trees in a forest.
O Oceans releasing CO2 into atmopshere as the water gets warmer.
Plant cell respiration.
Answer:
fossil fuel doesnt need atmospheric carbon for burning
1.scientist solve problem in an organised way called ________
2.amoeba move or feed with ________
3.nucleus was first discovered by ________
4. creation of the something new called _______
5. longest cell is________
Answer:
1. Scientific method
2. pseudopods
3. In 1909, Ernest Rutherford’s
4. innovation
5. nerve cell
A scientist wishes to create bacterial colonies on an agar plate for observation of growth. Unfortunately, directly adding bacteria from the original culture results in too many bacterial colonies to count. In order to create a solution of proper bacterial concentration for observation, the scientist performs a three-step 1:100 serial dilution of the original bacterial culture. What is the dilution factor of the final solution
Answer:
10⁶
Explanation:
A 1:100 serial dilution is a dilution in which the concentration decreases 100 fold (i.e., in each dilution the concentration of the culture must be multiplied by 10⁻²). The question above indicates that a three-step 1:100 dilution was applied, which means >> 10⁻² x 10⁻² x 10⁻² = 10⁻⁶. Moreover, the dilution factor can be calculated by dividing the volume of the diluted solution by the volume of the concentrated solution. The dilution factor is the inverse of dilution, thereby in this case this value is equal to 10⁶ (dilution = 10⁻⁶ >> dilution factor = 10⁶).
a slow-moving stream has many plants growing in it. changes to the climate makes the water in the strem move much faster. what is the most likely effect of this change?
A. the stream will turn into a bog.
B. the stream will have fewer plants growing.
C. the stream will become more stagnant.
D. the stream will become more productive.
Answer:
B. the stream will have fewer plants growing.
Explanation:
Alto-cumulus clouds belong in which level of the atmosphere?
High level
Mid-layer
Low level
Very High level
Cloudlets, also known as altocumulus clouds, are tiny mid-level layers or patches of clouds that are most often seen as spherical clusters. Therefore, option (B) is correct.
What are alto-cumulus clouds?Cloudlets, also known as altocumulus clouds, are tiny mid-level layers or patches of clouds that are most often seen as spherical clusters. However, since there are so many different types of altocumulus, they may take on a variety of forms.
Indicators of convection, or increasing heat, in the atmosphere include altocumulus clouds. Warm air rises into the sky, where it cools and condenses nearby water droplets to create the cloud formations that we see from the ground.
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plz it will help me alot
Answer:
Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma.
Explanation:
Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma are the ways from which health should be affected by happening of natural disasters such as earthquake and cyclones. We are able to predict the weather with the help of satellites that monitors the movement of clouds on the earth atmosphere. Advancement of technology is the main reason which enable us to predict the weather conditions as well as the coming of cyclones in a specific region.
name the importance of cohesive and adhesive forces in transpiration
Answer:
Cohesion and adhesion draw water up the xylem. Transpiration draws water from the leaf. Negative water potential draws water into the root hairs. Cohesion and adhesion draw water up the phloem.
The movement of oxygen from the alveoli into pulmonary capillaries and carbon dioxide from pulmonary capillaries to the alveoli is: Select one: a. Internal Respiration b. External Respiration c. Pulmonary Respiration d. None of the above.
Answer:
External Respiration.
Explanation:
External Respiration is the type of respiration in which exchanges of gases occurs between the lungs and the bloodstream i.e. pulmonary capillaries. Inside the lungs, oxygen is loaded into the hemoglobin and carbon dioxide waste is unloaded, this process is called external respiration. This respiratory process takes place through the help of hundreds of millions of microscopic alveoli.
2) ¿Cuál de los siguientes hechos no es una evidencia de una reacción química? a) Presencia de un catalizador b) Cambio de color d) Liberación de gas
Answer:
a) Presencia de un catalizador
Explanation:
Los dos tipos de cambios que experimentan las sustancias en la química son cambios químicos y físicos.
Un cambio físico es un cambio es un cambio en el que la sustancia cambia en su apariencia o su forma de una manera que es reversible y en la que no se forma una nueva sustancia.
Un cambio químico es aquel en el que hay un cambio en las sustancias presentes y se forma una nueva sustancia.
La evidencia de que ha tenido lugar un cambio químico incluye
1) La formación de un precipitado a partir de la mezcla de sustancias.
2) Un cambio en el color de las sustancias.
3) Un cambio en el olfato (que desprende un olor) o en el sabor.
4) La sustancia produce luz (brilla)
5) El volumen total cambia
6) Cambio de temperatura (la mezcla se calienta o enfría)
Por lo tanto, la presencia de un catalizador, que es una sustancia que no participa en una reacción pero aumenta la velocidad de reacción, no es evidencia de una reacción química.
help can be needed please!
The correct answer is A. Plastic trash in the neighborhood park.
Explanation
The tragedy of the commons was a term used by Garrett Hardin to describe a situation in which several individuals motivated by personal interests destroy or undermine a common good even though none of them is convenient for this. Outcome. According to the above, the correct answer is A. "Plastic trash in the neighborhood park", because this describes the result of an individual action of several people, which is to throw garbage in the park and that as a result causes general damage in the community.
Which type of graph could be easily converted into a pie chart?
Answer:
bar graph can be easily converted to pie chart
What is the correct structure of ATP? A. Ribose sugar, Adenine base, 3 Phosphate groups B. Triglyceride head, Ribose sugar, 3 fatty acids C. Ribose sugar, Phosphate group, Nitrogen Base D. Deoxy Ribsose sugar, Adenine base, 3 Phosphate groups
Answer:
The correct structure of ATP is
A. Ribose sugar, Adenine base, 3 Phosphate groups
Explanation:
The structure of ATP is a nucleotide, consisting of a nitrogenous base (adenine), a ribose sugar, and 3 serially bonded phosphate groups.
What is one of the negative consequences of burning waste?
A. It reduces consumption
B. It pollutes the groundwater
C. It contributes to climate change
D. It creates runoff
Answer:
B. It pollutes the groundwater.
Answer:
B. It pollutes the groundwater.
Some of the smallest cells in the human body are red blood cells. They make up nearly half the volume of blood. A typical red blood cell is 8 µm across. The largest artery that blood flows through is the aorta, which is about 20 mm (2 cm) across. How many red blood cells would fit side-by-side across the aorta? Show your working.
Answer:
[tex]$1.6 \times 10^{-3}$[/tex]
Explanation:
Given data :
Size of a typical red blood cells = 8 µm
= 0.0008 cm
The size of the largest artery through which the blood flows, known as aorta
= 20 mm
= 2 cm
Thus the number of the red blood cells that would fit side by side across the aorta would be = 2 cm x 0.0008 cm
= [tex]$1.6 \times 10^{-3}$[/tex]
Muốn có vitamin D tránh loãng xương, còi xương ta cần phải là gì:
Answer:
Phơi nắng vào buổi sáng.
Answer:
chúng ta phải bổ sung thêm vitamin D qua các sản phẩm như lòng đỏ trứng, cá, sữa.
Explanation:
Which of these is the main cause of habitat fragmentation? O A. Reduction in genetic diversity O B. Migration of mammal species O C. Demand for land use O D. Extinction of bird species
Answer:
C. Demand for land use
Explanation:
Habitat fragmentation usually occurs because of human activities such as new roads, parking lots, and housing developments. Organisms need their specific habitat for survival, and fragmentation is a leading threat to many terrestrial animals.
Based on this map, which of the following countries do you think contributes most to global climate change?
Answer:
The answer is C.united states
Why the leading and lagging strand of DNA synthesize through different mechanism?What factor determine these differences
Answer:
ناسحتصس حساب سكسوسشت كمسنصو م٩سس
ASAP
What is a benefit of a plant having Chlorophyll and Carotenoids?
A. The plant can absorb energy from multiple wavelengths at once.
B. They can absorb both sunlight and moonlight .
C. It is not a benefit.
D. If one becomes damaged, the other can take over.
Answer:
Carotenoids have two important functions in plants. First, they can contribute to photosynthesis. They do this by transferring some of the light energy they absorb to chlorophylls, which then use this energy to drive photosynthesis. Second, they can protect plants which are over-exposed to sunlight. but the letter answer I don't know
The benefit of a plant having Chlorophyll and Carotenoids is that plant can absorb energy from multiple wavelengths at once. Option A is the right answer.
What are chlorophyll and carotenoids?Chlorophyll is the green pigment that is responsible for the green color in the leaves of plants. Carotenoid on the other hand is a yellow, orange, and red color pigment that is produced in plants, algae, and some other forms of bacteria.
Chlorophyll actively absorbs light from wavelengths in the range of blue to red.Chlorophyll poorly absorbs light from the green range.Hence, carotenoids absorb light in wavelengths that are ineffective by chlorophyll such as the blue-green range to green range.To learn more about chlorophyll and carotenoids, refer:
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In many parts of the world, the average age of reproductive maturity is increasing as humans move from urban to rural environments. Suppose that the current average age of first reproduction is 15 years old in India and 20 years old in France. How would a 5-year increase in the average age of reproduction in both countries be expected to affect the per capita birth rate, and would this effect be greater in France or in India
Answer:
Increase in France.
Explanation:
A 5-year increase in the average age of reproduction in both countries i.e. France and India, it will greatly affected the per capita birth rate of both countries but higher in France because the average age of reproduction is higher in France as compared to India. The average age of first reproduction is 15 years old in India and 20 years old in France but with the increase of 5 years, the average age of first reproduction is 20 years old in India and 25 years old in France.
What is a hominid? A)a family of tree-swinging monkeys B)a family of baboons C) a family of primates that include humans D) a family of bipedal apes
Answer:
a family of primates that include humans
Explanation:
A researcher found a beautiful plant while traveling in Alaska and collected its seeds. When she came back to Florida, she soaked some of the seeds in pure water and some of these seeds in a water hormone solution. When she put all of the seeds in the soil to grow, only the seeds that had been soaked with the hormone germinated. The hormone most likely was
Answer:
auxins and cytokinins
Explanation:
the two hormones induce growth for plants
Place the steps shown below in the correct order.
2.3.1.5.4
2.1.3.4.5
04.1.3.5.2
1.3.4.5.2
2.4.3.1.5
Answer:
option 2. 2.1.3.4.5
Explanation:
This is the accurate answer... that is the correct steps of mitosis
what is menstruation and why does it occurs
Answer:
A period happens because of changes in hormones in the frame. Hormones are chemical messengers. The ovaries launch the lady hormones estrogen and progesterone . those hormones motive the liner of the uterus (or womb) to build up. The constructed-up lining is prepared for a fertilized egg to connect to and begin developing. If there is no fertilized egg, the liner breaks down and bleeds. Then the identical manner occurs all once more.
It normally takes about a month for the liner to build up, then smash down. this is why a lot of ladies and women get their periods round once a month.
Source:
https://kidshealth.org/en/teens/menstruation.html
https://www.plannedparenthood.org/learn/health-and-wellness/menstruation
thectgod ig follow
Help needed in biology…!
Answers:
viii) ATP
ix) To extract its chlorophyll
x) Amino Acids
xi) Aquatic submerged plants
xii) Rapid blood flow at high pressure
Hope this helps!
[I learned this in Bio this year so I know the answers]
Which statement about water pollution is TRUE?Question 80 options: Air pollution can cause water pollution. There is a short list of substances that cause water pollution. Water pollution comes only from chemicals introduced into a body of water. Only surface water is at risk of becoming polluted. The origin of water pollution is always easy to identify and treat.
Answer:
Option A. Air pollution can cause water pollution.
Explanation:
Substances can permeate into the water from the air.
Water gets polluted by many causes, but a major cause is the air, and chemicals introduced can cause water pollution, hence option a and c is correct.
What is water pollution?Water pollution is described as the contamination of water sources by chemicals that render the water unsafe for drinking, cooking, cleaning, swimming, and other uses.
Chemicals, garbage, germs, and parasites all are types of pollutants. All types of pollutants eventually end up in the water. It has the possibility of contaminating drinking water, contributing to waterborne diseases.
Water pollution has an impact on the ecosystem as well because it could induce eutrophication. This can harm fish and other aquatic organisms.
Therefore chemicals and air both pollute the water, then through into the water bodies, hence a and c is the correct option.
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