A taxonomic key is a tool used to identify an unfamiliar organism.
a. True
b. False
Which of the following statements about phylogenetic trees is not true?
A. They can show which groups of organisms are most closely related.
B. They can show which groups of organisms are more advanced than other groups.
C. They can show which group of organisms diverged longest ago.
D. They can show predictions of evolutionary relationships from the analysis of shared heritable traits.
Answer:
B. They can show which groups of organisms are more advanced than other groups.
They can show which groups of organisms are more advanced than other group is not true about phylogenetic tree.
It is used to identify the phylogenetic relationship between the organisms.It show which group of organism diverged longest ago.What is phylogenetic tree?It is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from common ancestors.It is based upon similarities and differences in their physical or genetic characteristics.To know more about phylogenetic tree here
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How do different parts of the nervous system work together to help you perceive and react to the environment?
Oxygen molecules are sixteen times as massive as hydrogen molecules.
At the same temperature, which type of molecule would you expect to move faster?
Answer: hydrogen molecules.
Explanation: in same temperature molecules have same average kinetic energy.
You can estimate it solving E = 3/2 kT = 1/2 mv². Constant k is Boltzmann constant.
Lighter molecule has greater speed
i will give brainlyest
Answer:
Person above me is right I think. :D no promises
Explanation:
Please give an awesome explanation.Ky answer if you're very good at Science/Biology.Please don't put a link to a website.
Explain how competition for food can cause natural selection.
Answer:
Competition for food happens when there is a limited amount of food resources available. The members of a species that eat that food who are best adapted to access the food are more likely to reproduce and pass on their genes to the next generation.
For example, we have a bird feeder with a narrow opening for food. The small-headed birds can reach the food, the bigger-headed birds cannot. If this was the only food source for this area, then over time, there would be more smaller-headed birds than large-headed birds, due to the competition for food and success/lack of success.
which of the following are parts of the biosphere. choose all that apply
river
deer
tree
mountain
mushroom
PLEASE HELP TAKING TEST NOW!!!!!!!!!!!!!! What is the main factor causing the salinity of the Everglades to change? (1 point)
O snake populations
O flood control levees
O climate change
O transportation canals
Answer: snake populations
Explanation:
why is cancer considered a genetic disease of somatic cell?
Which of these is a difference between DNA and RNA?
DNA is found in the nucleus; RNA is never found in the nucleus.
DNA consists of five different nucleotides; RNA consists of four different nucleotides.
RNA is double-stranded; DNA is single-stranded.
DNA contains thymine; RNA contains uracil.
In DNA, adenine pairs with guanine; in RNA, adenine pairs with thymine.
Like DNA, RNA is made up of nucleotides. There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
if you wanted to determine the temperature of a star, which measurement would you make? refraction Doppler shift emission spectrum absorption spectrum (K12 question also its Earth Science)
Answer: Emission Spectrum
Explanation:
K12 4.17 Quiz: Electromagnetic Spectrum
What process involves rainwater filtering through soil?
what would never be part of an mRNA strand?
Answer:
Uracil
Explanation:
Thymine would never be part of an mRNA strand.thus, option A is correct.
What is mRNA?Messenger RNA (mRNA), molecule in cells that carries codes from the DNA in the nucleus to the sites of protein synthesis in the cytoplasm (the ribosomes).
It was also known that there are only four nucleotides in mRNA: adenine (A), uracil (U), guanine (G), and cytosine (C). Same three nucleotide base is also present in the DNA except thymine. Thymine is replaced with uracil in case of RNA. thus option A is correct.
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Instructions: Use the data table that shows the estimation of the daily resting energy expenditure (REE) to
explore how calorie requirements change as a person gets older. Follow the steps to calculate the REE for a
person over time. Record your calculations in the table,
1. Decide to calculate the REE for a male or female,
2. Choose an adult weight.
3. Calculate the REE for the adult from age 18-29. 30-60, and over 60. Assume the adult maintains the same
body weight at each age.
(Score for Question 1:of 1 point)
1. Male or female
Answer:
of 1 point)
(Score for Question 2:
2. Weight
Answer:
Table
(Score for Table:___ of 18 points)
Use the Table of the Estimation of the Daily Resting Energy Expenditure (REE) to determine the calculation used
for each age range.
Questions
1. How does the REE change as a person?
2. What do these results indicate about how the body’s metabolism changes over time?
154. 170
166. 185
148. 156
the right of a court to choose to do or not to do something particularly in relation to sentencing an offence is known as
Answer:
I HOPE IT WILL HELP U
Explanation:
guidelines
Determining the order of events and the relative age of rocks by examining the position of rocks in a sequence is called____
A;bsolute dating
B:radiometric dating
C relative dating
D carbon dating
please hurryyyyy!!!!!
These traits are found on chromosome #23 and specifically on the X chromosome
a. sex influenced traits
b. linked traits
c. sex linked traits
d. multiple alleles
Answer:
C. Sex linked traits.
Explanation:
It explains more on https://www.sciencedirect.com/topics/neuroscience/x-chromosome.
which two body system interact to expel the waste product carbon dioxide
Answer:
The circulatory system is responsible for bringing food and oxygen to every cell in your body. The respiratory system is responsible for carrying oxygen and carbon dioxide in and out of your body. The excretory system is responsible for removing waste from your body.
Explanation:
- Eijiro <3
Answer:
Explanation: you are wrong because i was putting that answer into my class it i failede so none of your advice helps i give no stars for this
Match the vocabulary with the correct description.
Column A
Column B
1.
axis
a. angular distance north and south of the equator
2.
rotation
b. an imaginary line that an object spins or revolves around
3.
revolution
c. a force that exists between any two objects that have
mass
4.
latitude
d. the orbiting of an object around another object
5.
gravity
e. the spinning of a celestial body, such as a planet, around
an axis
Answer:
Axis - B
Rotation - E
Revolution - D
Latitude - A
Gravity - C
Explanation:
The axis is the line that a body spins on. The axis will line up with the north and south poles. For Earth, the axis is tilted, which is why seasons exist.
The definition of rotation is "the action of rotating around an axis or center." So, rotation is the spinning of a body on its axis. On Earth, one rotation is equal to one day.
Revolutions are when a body spins around another. For Earth, one revolution around the sun is one year
Latitudes are invisible lines that separate the world into degrees from North to South. They are also called parallels.
Gravity is the force that keeps things together. Large masses have gravity that attract other masses.
2. Which contains the other, cell membrane or phospholipid?
Answer:
Cell membrane contains phospholipid
Explanation:
Part of the cell membrane is made up of the phospholipid bilayer, which consists of two layers of phospholipids.
During transcription, initiation involves the attachment of RNA polymerase to the promoter and the start of RNA synthesis.
Group of answer choices
True
False
Answer:
true
Explanation:
True. During transcription, initiation is the first step in which RNA polymerase binds to the promoter region of the DNA molecule.
The promoter is a specific sequence of nucleotides located upstream of the gene that signals the start site for transcription. RNA polymerase recognizes and binds to the promoter sequence, forming a complex called the transcription initiation complex.
Once the transcription initiation complex is formed, RNA synthesis begins. RNA polymerase unwinds the DNA double helix in the region of the gene, exposing the template strand. It then catalyzes the synthesis of an RNA molecule by adding complementary RNA nucleotides to the growing RNA chain according to the base pairing rules (A-U and G-C).
So, the statement "During transcription, initiation involves the attachment of RNA polymerase to the promoter and the start of RNA synthesis" is true. Initiation is indeed the process where RNA polymerase binds to the promoter and initiates the synthesis of an RNA molecule based on the DNA template. This is a crucial step in the process of transcription, as it determines where and when the transcription of a specific gene will occur.
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When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? Permease allows lactose to enter the cell when lactose enters the cell. The repressor binds to the operator in the absence of lactose. The repressor cannot bind to the operator in the presence of lactose. RNA polymerase transcribes the lac operon to make a single RNA molecule. CAP binds to cAMP and then to the promoter only in the presence of low glucose.
Answer:
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Explanation:
When both lactose and glucose are available to E. coli, the part of the lac operon regulation that assures that glucose will be metabolized first is
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Lactose is a type of sugar that is found naturally in milk produced by mammals and Glucose is a monosaccharide made mostly by plants during photosynthesis
Which is a characteristic of arthropod?
A. moist skin
B. feathers
C. scales
D. joint-legged
Answer:
D joint legged like butterfly
Answer:
D.joint legged
Explanation:
D.joint legged
Where do winds come from?
Explain your answer.''
the energy that drives wind originates with the sun which heats the earth unevenly creating war spot and cool spots
Answer:
The energy that drives wind originates with the sun, which heats the earth unevenly, creating warmsports and cool sports. Two simple examples of this area sea breezes and land breezes. Sea breezes occur when inland areas heat up o sunny afternoons.
A plant with green seed pods (GG) is crossed with a plant with yellow seed pods (gg).
Draw a Punnett Square on a piece of paper and determine the Genotype of the
offspring.
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
it's a because
When we burn oil, coal, and gas, we change the ocean's basic chemistry, making it more acidic. Our seas absorb as much as a quarter of all man-made carbon emissions. Since the start of the Industrial Revolution (and our coal-burning ways), the ocean has become 30 percent more
Answer:
A - Burning coal
Explanation: When you burn coal you create polution which contributes to global warming, and global warming warms up the earth.
a. Describe the difference in the arrangements of the anthers and stigmas in the pin-eyed and thrum-eyed primrose.
b. Which part of the insect's body would touch the stigma in a pin-eyed primrose and a thrum-eyed primrose?
c. Explain how this will help to ensure that cross-pollination takes place.
d. Self-pollination does sometimes occur in primroses. Would you expect it to occur more often in pin-eyed or thrum-eyed primrose? Explain your answer.
Answer:
I dont know if i am right what about A D and B
Answer:
A-There are two different types of primrose flowers: some have a pin-eyed stigma which rises above the pollen-bearing anthers, while in thrum-eyed flowers the stigma is enclosed by the anthers. Long-tongued insects like butterflies and bee-flies visit the flowers to reach the nectar at the base of the flower-tube.
B-An insect visiting a pin-eyed flower first collects pollen from the lower anthers on the middle of its proboscis, which it then transfers to the stigma in a thrum-eyed plant, which is positioned lower down the flower tube. It's an ingenious adaptation which ensures that primroses will be successfully cross-pollinated.
C-Many plants have ensured that cross-pollination takes place by deliberately keeping male and female flowers on the same plant out of sync. In this corn plant, the pollen is ripe long before the stigmas are receptive; therefore, the only way the ovules can be fertilized is by the pollen from another corn plant.
D- When they visit a thrum-eyed plant, the pollen from the anthers, which are near the top of the tube at the entrance, attaches to the top of the insect’s proboscis. When it visits a pin-eyed flower and probes deeply for nectar, the pollen is in a perfect position to be transferred to the higher stigma of this flower. An insect visiting a pin-eyed flower first collects pollen from the lower anthers on the middle of its proboscis, which it then transfers to the stigma in a thrum-eyed plant, which is positioned lower down the flower tube. It’s an ingenious adaptation which ensures that primroses will be successfully cross-pollinated.
Explanation:
Hope this helps!
The Topic is Coal Production. What trend would you predict for the next ten years for each region? Western Interior and Appalachian
Explanation:
The new trend will probably be the technology that's in that certain year. As the trend in the modern days is all electronics or will have to do with electronics.
The scientific evidence that scientists use in supporting or critiquing the conclusions of experiments usually consists of
A. raw data.
b. outtlier data
c. precise data
d. summarized data
Answer:
D
Explanation:
summarized data
Data that summarize all observations in a category are called summarized data.
Would like Brainliest no required tho.
HELP PLEASE 30 POINTS!
Answer:
It becomes more smaller in tension because that is what contract means, they take different forms which are smaller such as what the question example gives you, when you bend your biceps they become smaller in length.
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