If a certain species of brown bird is crossed with a white one all the offspring are tan. If these offspring were crossed and produced 20 individuals in the f2 generation what colors and ratios would be expected?
Answer:
In the f2 generation:
10 of offspring would be tan (ratio form - 10:20)
5 of offspring would be white (ratio form - 5:20)
5 of offspring would be brown (ratio form - 5:20)
Why is ATP like a charger battery and ADP is like an uncharged battery ?
Answer:
When a cell has no available energy, it is able to store energy by adding a phosphate group to an ADP (adenosine diphosphate) molecule. The ATP molecule that results is like a battery because both the molecule and a battery contain stored energy, while, on the other hand, ADP is a partially charged battery.
Explanation:
hope this helped Mark BRAINLEST!
What is the answer to this question 11
Answer:
11 = multicellular ; autotroph
option D
hope it helps
Plss help me with this carbon cycle!!!!
Answer:
Plants photosynthesize, so they need, thus absorbs carbon dioxide. Marine plants also need carbon dioxide for photosynthesis so they absorb. Dead plant and animal matter decay to release carbon dioxide as a result.
A carbon footprint refers to the greenhouse gas emissions caused both directly, and indirectly, by an individual, a product, an organization, or an event.
I need this ASAP please i might fail
What are the different types of leaves that plants have?
Answer:
There are two different types of leaves – simples leaves and compound leaves. The other types of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, centric cordate, etc. They perform the function of photosynthesis and help in the removal of excess water from the aerial parts of the plant. The most obvious aspect to examine is the shape of the leaf. If it is an uninterrupted shape, it is simple. If the shape divides into smaller leaf sets the leaf is compound. Identifying plant leaves that are compound divides them into subsets.
Chef Brandi suffered a bum on her arm when a kettle of spaghetti sauce exploded. The doctor, using a forceps, pulls on a hair within the
area that is burned. The hair easily pulls out. What degree of burn did the patient have?
Answer:
2degree burn
Explanation:
it has moist layer of skin and it affects the outer and middle layers of your skin the hair is present in human body . hope you find it useful
Explain the three mechanism for how activated transcription factors can stimulate transcription through modification of the chromatin structure.
PLEASE HELP What is a similarity between the first-quarter moon and the third-quarter moon? (1 point)
The moon is located between Earth and the sun.
The moon is always waning in both phases.
The moon is always waxing in both phases.
The moon is located perpendicular to Earth and the sun.
Answer:
The moon is located perpendicular to Earth and the sun.
Why does DNA make a copy of itself during cell division?
A. To make sure that the two new cells can make the same proteins
as the parent cell
B. To make sure that the two new cells have slightly different genetic
codes
C. To carry amino acids out of the nucleus
D. To expose the genes that code for the needed proteins HELP FAST
Answer:
its A
Explanation:
I took the test
CAN YOU HELP MD PLEASEEE ITS BIOLOGY!!! THANK YOUUU
Answer:
yeah of course
1 ) answer is protist
2) Eubacteria
3) Animal
Can a gene mutation that does not influence phenotype be considered an adaptation? Why or why not?
Answer:
No; only a small percentage of mutations cause genetic disorders—most have no impact on health or development. For example, some mutations alter a gene's DNA sequence but do not change the function of the protein made by the gene.
Explanation:
What are your top 3 favorite lifeforms and why? What adaptations help these living things to survive in their environment?
please help
I will give brainliest for the best answer
Answer:
so it's saying what are your favorite animals or plants or living things and how do they survive
hi!! here's ur answer!!
my top 3 favourite lifeforms are- polar bears,tigers and ducks. :D
1) polar bears- are well adapted for survival in the Arctic. Their adaptations include: a white appearance - as camouflage from prey on the snow and ice. thick layers of fat and fur - for insulation against the cold.
2) tigers- striped coat helps them blend in well with the sunlight filtering through the treetops to the jungle floor. The tiger's seamless camouflage to their surroundings is enhanced because the striping also helps break up their body shape, making them difficult to detect for unsuspecting prey.
3) ducks- possess an oily coating that keeps water from settling in their feathers, helping them in staying dry and keeping themselves warm. Their webbed feet, designed like paddles, provide more surface area to push against the water and help them swim.
hope it helps:)
Which of these is a downside of natural gas?
Answer:
B, extraction through fracking can contaminate groundwater.
Explanation:
Well, it's really the only downside available. Hope this helps :)
what is the definition of soluble?
Answer:
soluble means that it is capable of being dissolved in water
Explanation:
Answer:
able to be dissolved, especially in water.
Explanation:
HELLLLPPPPPPPPPPPLEASEEE
Jessica learns that two organisms are members of the same class. Which can she also infer is true?
The organisms are members of the same order.
The organisms are members of the same family.
The organisms are members of the same genus.
The organisms are members of the same phylum.
answer:
The organisms are members of the same family.
this is the answer.
Premed students are often traumatized by studying for their MCAT exam, which historically was always taken at the end of their Junior year in college. Now, many medical schools desire a meaningful gap year between completion of an undergrad degree and entrance to medical school so that incoming students have some sort of life-time experience either working, doing research, charity outreach, or traveling during that time. As a result, modern pre-med students often wait to study for their MCAT until after they graduate without realizing that it means they will end up taking two gap years, not one. Students who complete a basics genetic course should be confident with their knowledge about DNA, RNA, and proteins, along with how to solve basic inheritance problems, which will help them on their MCAT exams. Introductory Genetics helps to reinforce concepts taught fleetingly in Introductory Biology.
1. Jiro is told that a bacterium contains a single DNA chromosome containing 15% guanine and then is asked to decide if the organism is âGCâ rich or not (>50% G-C content = 'rich')). With full confidence, Jiro responds:
A.Heck no! The strand has a GC content of 30%.
B.Heck yeah! The strand has a GC content of 70%.
C.Heck no! The strand has a GC content of 15%.
D.It contains exactly 50% GC content.
2. If Marisol isolates 15% guanine from a strand of DNA, she can say with full confidence that:
A.the strand is made up of 70% pyrimidines.
B.the strand is made up of 30% pyrimidines.
C. the strand is made up of 50% pyrimidines and 50% purines.
D.the strand is made up of 70% purines.
3. Jayson is asked if a strand of DNA that is GC-rich will be harder to separate than one that is GC-poor. He responds with full confidence:
A. No!
B.Yes!
C. This question is irrelevant since double-stranded DNA is always easy to separate due to the hydrogen bonds that hold them together.
D.After 150 years of research into DNA, no one knows the true answer to this question.
Answer:
1. A
2. C
3. B
Explanation:
1. The DNA here has a Guanine(G) content of 15% and as G is equal to C,
[tex]$GC=G+C$[/tex]
= 15% + 15%
= 30%
As the GC content is less than 50 % , so the DNA is not a GC rich DNA. Therefore, for a DNA to be GC rich in content, G+C should be more than 50%.
Therefore the correct option is (A), The strand has a GC content of 30%.
2. With a content of 15% Guanine, we calculate the proportions of the four bases. They are :
[tex]$A+T=G+C$[/tex] and [tex]$A=T, G=C$[/tex]
∴ [tex]$A+T=15\% +15\%$[/tex]
[tex]$=30\%$[/tex]
So when we substract 30% from 100% , we get 70%. Now this 70% is then distributed in the equal proportions for [tex]$A$[/tex] and [tex]$T$[/tex].
Therefore, we have:
[tex]$A=30\%, T=35\%, G=15\%$[/tex] and [tex]$C=15\%$[/tex]
Therefore we calculate the content of purines [tex]$(A,G)$[/tex] and pyrimidines [tex]$(C,T)$[/tex].
Purine content : [tex]$A+G = 35\% + 15\%$[/tex]
[tex]$=50\%$[/tex]
Pyrimidine content : [tex]$C+T=15\%+35\%$[/tex]
[tex]$=50\%$[/tex]
Therefore, the correct option is (C).
3. Yes, the GC rich strand of the DNA is more stable the a GC low content DNA. But this stability is not due to the hydrogen bonds, it is mainly due to the stacking interaction known as base stacking.
So the correct option is (B).
PLZ HELP ME ASAP
Research a disorder or disease caused by issues involving blood pressure.
Identify an organism that the giant tortoise competes with
Answer:
Threats
Explanation:
The giant tortoise is threatened by introduced species to the islands, such as dogs and cats which prey on young tortoises, and cattle which compete for grazing vegetation.
What could explain the curve in this population growth graph?an unlimited food supply
a natural disaster
a population crash
a reduction in predators
Answer:D
Explanation:
The curve in this population growth graph indicates an unlimited food supply, which is the first option, as an unlimited food supply could explain a steady or exponential increase in population size without a curve.
What is population growth?Population growth is a measure of the change in population size over time, and it is affected by many factors, including the availability of resources, predation, disease, natural disasters, and human activities. The shape of a population growth graph can provide important insights into the underlying factors that are influencing the population. An unlimited food supply would allow a population to grow without any limitations. In this scenario, the population would experience a steady or exponential increase in size, and the graph would show a straight line or a curve that rises steeply. However, even with unlimited food, other factors, such as competition for resources, predation, or disease, may eventually limit the population's growth.
Hence, the curve in this population growth graph indicates an unlimited food supply, which is the first option.
Learn more about population growth here.
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does atoms of the same elements have the same number of pruton
Answer:
all atoms of element have the same amount of protons
Explanation:
What is the complementary strand of DNA for the polymer ATTCGCAT?
O TAACGCTA
O TAAGCGTA
O ATTCGCAT
O CGGATACG
Answer:
TAAGCGTA
Explanation:
Which of the following best describes a precipitate?
A measure of mass per unit of volume
A solid separated from a solution
A form of weather
A clear indication of a physical change
Answer:
In chimica, un precipitato è un solido insolubile che emerge da una soluzione liquida. L'emergenza del solido insolubile dalla soluzione è chiamata precipitazione. Spesso il precipitato emerge come una sospensione. I precipitati possono formarsi quando due sali solubili reagiscono in soluzione per formare uno o più prodotti insolubili.
Explanation:
A solid separated from a solution best describes a precipitate. So, the correct option is B.
What is Precipitate?Precipitation is the process of formation of a solid substance in a solution, either by physical mixing of low-solubility chemicals or by a chemical reaction of two or more compounds. Precipitate refers to the solid that eventually forms as a result. A solid that separates from a solution during a chemical reaction is known as a precipitate.
When two or more compounds are combined, they react to form an insoluble product, which is how it is formed. A precipitate may take the form of a suspension in solution or a solid that settles to the bottom of a solution. It can be removed from a liquid using a number of techniques, including filtration and centrifugation. Many chemical reactions require precipitates, which are often used to separate, purify, or identify different compounds.
Therefore, the correct option is B.
Learn more about Precipitate, here:
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Eukaryotic cells are larger than prokaryotic cells.
True
False
What is the main source of energy for the world
As a naturalist, you are responsible for training volunteers in the identification of the types of amphibians. The volunteers will use this information to correctly describe the animals to school groups that will visit your nature center. The training documentation for the volunteers lists important characteristics of the different groups of amphibians, but you notice that one of the items on the list is incorrect. Indicate which description is not correct.
A. Frogs, toads, and most salamanders have four legs whereas caecilians are legless.
B. While some frogs may advertise their distasteful nature by bright coloration, salamanders always have cryptic coloration.
C. Some adult salamanders retain larval characteristics such as external gills.
D. Most caecilians can be found burrowing in the soil of tropical forests.
Answer:
B. While some frogs may advertise their distasteful nature by bright coloration, salamanders always have cryptic coloration.
Explanation:
Amphibians are vertebrates which can live both on land and in water. they are cold-blooded and therefore, depend on warmth from sunlight to become warm and active. Their young live fully in water respire using gills. The adults have moist skins through which they respire and therefore, live in moist places or near water to keep their bodies from drying out. Many adult amphibians also have poison-producing glands in their skin to ward off predators. Poisonous amphibians usually display a warning coloration. . The species in this group include frogs, toads, salamanders, caecilians and newts.
Considering the above descriptions:
A. Frogs, toads, and most salamanders have four legs whereas caecilians are legless.
True: Caecilians are a group of limbless, wormlike or serpentine amphibians that mostly live in underground burrows or in substratum of shallow streams.
B. While some frogs may advertise their distasteful nature by bright coloration, salamanders always have cryptic coloration.
False: Some frogs such as poison frogs as well as some salamanders such as the California newt and the red eft which a brightly colored terrestrial juvenile form of the eastern newt is highly poisonous. advertise their distasteful nature by bright coloration.
C. Some adult salamanders retain larval characteristics such as external gills.
True: Some adult salamanders retain larval characteristics such as external gills. e.g. species such as the mudpuppy (Necturus maculosus) retain their gills throughout their lives.
D. Most caecilians can be found burrowing in the soil of tropical forests.
True: Caecilians are a group of limbless, wormlike or serpentine amphibians that mostly live in underground burrows or in substratum of shallow streams.
I have no idea what the answer is but ill give points for CORRECT answers only!!!
Answer:
A
Explanation:
Explore the three different types of ground tissue cells in detail and complete the chart below.
Answer:
parenchyma have primary cell walls (thin) and are unspecialized and metabolically active (photosynthesis, respiration)
collenchyma have primary cell walls (unevenly thick) which provide a level of structural support in areas of high growth, they are alive so have a protoplast
sclerenchyma have secondary cell walls which means they have lignin and are thick, they are functionally dead at maturity so provide support in areas that are done growing and are involved in transport of water
Explanation:
Select all that are true about genes and proteins
Proteins are responsible for the variation of birth rates we see in a species
a) A codon has the instructions for a protein
b) If a protein's shape changes, the function changes as well
c) There are 46 amino acids
d) Proteins are responsible for the variation of traits we see in a species
e) Some genes have no function at all
f) A codon has the instructions for an amino acid
Answer:
E, D, A
Explanation:
No explanation thats whats responsible. A brainliest will be nice
Can someone please do a summary on how wind works? 7-9 sentences please I will mark brainliest!
Answer:
Wind is the movement of air. It forms when air moves from areas of high-pressure to areas of low pressure. These pressure differences are caused by temperature differences on Earth's surface. The movement is a result of different places on Earth receiving different amounts of energy from the sun. Two types of winds are global and local. Global wind systems determine weather patterns for the entire planet. Local winds are sea and land breezes that occur due to uneven absorption of solar energy.
Explanation:
hope this helps :D