The genetic code is *UNIVERSAL*
A scientific theory is NOT an educated guess.
True
False
Answer:
False
Explanation:
Scientific theories are given on the basis of lots of studies.Even the hypothesis are proposed only after the observation of specific materials.
AP biology questions are very hard. What book should my student be using as a reference?
Answer:
honestly, it is all up to your preference if you are the tutor or the teacher. It depends on if the student wants to go really in-depth with their work and memorize all the small details, or to know the basics
Explanation:
Explain how the energy from the sun is transferred to animals that cannot harness energy directly from the sun.
Answer:
its energy or energy cycle
Explanation:
. Jack and Jill are thinking about starting a family and they come to you with a question about a rare recessive genetic disease called Alpers Syndrome. Alpers causes progressive neurodegeneration in infants and children and is usually lethal within the first 10 years of life. Jack's grandfather had a brother die of Alpers Syndrome, while Jill has no family history of the disease. If the frequency of heterozygotes for Alpers is 1 in 2000 in the general population, what is the chance that Jack and Jill will have a child with Alpers Syndrome? (Be sure to completely reduce your answer.)
Answer:
The chance of having a Child who is a Heterozygote is 50% , The chance of having a child that will completely come down with Alpers syndrome is 0%
Explanation:
Jack has a history of Alpers in his family
Jill has no history
lets assume Jack is a carrier : Ab ( because that is how he could have survived the first 10 lethal years )
Jill : AA
Therefore the probability/chance of Jack and Jill having a child with Alpers ( carrier ) syndrome will be 50 % as shown below
AA * Ab = AA , Ab, AA, Ab
The child produced by Jack and Jill will only be a carrier of the syndrome and not completely affected by the syndrome
Which of the following is not true about cells? *
All living cells always come from other living or dead cells.
Answer:
can you give more info
Explanation:
This is a type of mushroom called a cremini. Which is a physical characteristic of this mushroom?
A.It is needs moisture to grow.
B.It is can be used for cooking.
C.It is a living organism.
D.It is a light brown color
Answer:
im pretty sure is D
Explanation:
How do plants get the energy they need to survive
Answer:
Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
Explanation:
Answer: Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
Explanation:
Take a look at the statement below: Fish meal is better than artificial fertilizers. How could this statement be revised to make it a hypothesis? Fish meal is safer than artificial fertilizers, but it does not make plants grow. Fish meal is a better fertilizer than artificial fertilizer because fish meal is natural. Plants that are fertilized with fish meal will grow taller than plants that receive artificial fertilizer. Plants that receive artificial fertilizer will be better than plants that receive fish meal.
Answer: B
Explanation:
A tall, heterozygous pea plant is cross-pollinated with another tall, heterozygous pea plant. What is the probability that the offspring will be a short plant?
a) 0%
b) 75%
c) 25%
d) 50%
Answer:
25%
Explanation:
Tt x Tt is the cross you should start with because both are heterozygous. Make a Punnett square. The short phenotype (genotype tt) should show up only once out of the four total genotypes. 1/4=25%
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Answer:
When you pair two tall, heterozygous pea plants, the probability of the offspring on the Pennett square being a short plant would be 25%, considering the most likely dominant gene being overruled with 75% being the tall gene.
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Question 2
Which of the following did the philosophers of ancient Greece not have evidence for?
O a.
The spherical shape of the Earth.
Ob.
The correlation between lunar phases and the cycle of oceanic tides.
c.
Retrograde motion of the planets as they moved across the sky.
The existence of exoplanets.
O d.
Answer:
c. Retrograde motion of the planets as they moved across the sky.
Explanation:
Ancient Greek philosophers were extremely intelligent people who propounded some ideas that have helped shape science to what it is today.
They had evidence for the spherical shape of the earth, the link between lunar phases and oceanic tides, and the existence of exoplanets, however, they did not have evidence for the retrograde motion of the planets as they moved across the sky because they believed that if the Earth moved around the Sun, then they would be able to see the stars from divergent points along Earth's orbit.
Which organelles surround the cell? Select two options. cell wall cell membrane nucleus endoplasmic reticulum ribosome
Answer:
The correct answer is - cell wall and cell membrane.
Explanation:
The cell membrane is present in the cell of every living surrounding the cell and its components and organelles such as cytoplasm, nucleus, mitochondria, and many more. It acts as the barrier between the inner cell and the outside environment.
The cell wall is another organelle that protects the cell and provides the strength and support to the cells such as plants and bacteria cells. It is found outside of the cell membrane.
Thus, the correct answer is - cell wall and cell membrane.
Answer:
cell wall and cell membrane
Explanation
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In which stage of the energy flow does carbon move from the non living to the living environment
Answer:
photosynthesis
Explanation:
Which is true of the low-tide zone?
It hosts very few kinds of life.
It is almost always underwater.
Its ecosystem never includes species that live on land.
Creatures there can spend a lot of time exposed to the air.
Answer:
b
Explanation:
i think
why is water necessary to your body
Answer:
body weight is about 60 percent water, Your body uses water in all its cells, organs, and tissues to help regulate temperature and maintain other bodily functions. Because your body loses water through breathing, sweating, and digestion, it's important to rehydrate by drinking fluids and eating foods that contain water.
What is meant by the term "controlled experiment"?
Answer: it means you do things purposely to get a reaction that will hopefully help to prove your hypothesis correct or to show what works in the experiment and what does not
Explanation:
Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. Which of the following adaptations would be more useful for an animal in a marine biome than for an animal in a freshwater biome? a. flippers and flattened tails b. smooth, nearly furless body c. streamlined body d. tolerance to high levels of salinity Please select the best answer from the choices provided A B C D
Answer:
I think it is D.
Explanation:
The reason I think this is salinity is how salty the water is and an animal that can tolerate high levels of salinity will thrive well in marine biomes.
The adaptation that would be more useful for an animal in a marine biome than for an animal in a freshwater biome would be tolerance to high levels of salinity.
Marine biomes are characterized by a high level of salinity. The saline environments are often hypertonic to the cells of organisms. Thus, organisms will ordinarily lose water to such environments and die as a result of dehydration.
Hence, organisms that will successfully inhabit marine biomes must find a way to tolerate the hypertonic environment. One of such adaptations is the possession of salt glands in the body.
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What is an inference
Answer:
When we make an inference, we draw a conclusion based on the evidence that we have available. ... Examples of Inference: A character has a diaper in her hand, spit-up on her shirt, and a bottle warming on the counter. You can infer that this character is a mother.
Explanation:
Explain how cells obtain energy from biological molecules in order to power cellular functions. Your answer should include a description of the structures and events of glycolysis, pyruvate oxidation, the Krebs cycle, and oxidative phosphorylation via the ETC and ATP synthase.
Answer:
oxidativa a través de la ETC y la ATP sintasa.
Explanation:
Cells obtain energy from biological molecules in order to power cellular functions as follows:
Adenosine triphosphate (ATP) is the biological molecule found in all living beings and constitutes the main source of energy that can be used by cells for various vital processes.
ATP can be produced from ADP and Pi (inorganic phosphorus) present in the medium, mainly through oxidative phosphorylation in mitochondria.
In aerobic organisms, the Krebs cycle is part of the catabolic pathway that performs the oxidation of carbohydrates, fatty acids and amino acids to produce CO2 and water, releasing energy in usable form (reducing power and ATP).The Krebs cycle uses acetyl-CoA that is formed by oxidative decarboxylation of pyruvate, by the action of the pyruvate dehydrogenase enzyme complex.
On the other hand, there are phosphate donor substrates that are used to synthesize ATP, a mechanism known as ATP synthesis at phosphorylation at the substrate level, such as what occurs in glycolysis or fermentation.
Glucose as the primary substrate in most cells is decomposed into CO2 through the oxidative process known as cellular respiration, where 38 molecules of ATP can be produced from a single glucose molecule.In the process of oxidative phosphorylation, the passage of electrons from NADH and FADH2 through the electron transport chain produces a pumping of protons or (H3O +) from the mitochondrial matrix into the intermembrane space.The flow of protons from the intermembrane space to the matrix provides part of the force necessary for the synthesis of ATP from ADP and Pi by ATP synthase.Most of the ATP synthesized in the mitochondria will be used for cellular processes in the cytosol, so it must be exported.Therefore, we can conclude that ATP provides the necessary energy to cells in order to power cellular functions.
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Help me plz NOW Which two explanations are based on personal beliefs?
O A. Fossil evidence shows how organisms have evolved into new
species over time.
I B. Chemical data show that gold atoms weigh almost twice as much
as silver atoms.
O C. People who perform good deeds are better than people who do
not.
OD. Observations made using telescopes are used to find the
distances between stars.
E. The relative positions of the Sun, Earth, and stars can affect
human and
Answer: C & E
Explanation:
The four fundamental types of organic molecules are proteins, carbohydrates, lipids, and ______.
A. Salts
B.phosphates
C.sulfates
D.nucleic acids
Nucleic acids is the answer
Juanita used a ruler to measure the pencil below. She used two different units of measurements. Which of the options could be the two different units she used?
a. 12 centimeters and 120 meters
b. 120 millimeters and 12 centimeters
c. 120 centimeters and 12 meters
d. 12 millimeters and 120 centimeters
Answer:
It might be A but I'm not fully sure.
Explanation:
A meteorologist observes a decrease in barometric pressure and predicts a chance of light to moderate precipitation. Which frontal system
is most likely approaching?
Answer:
Warm front
Explanation:
A warm front is the transition zone of the replacement of a cold air mass by a warm air mass. The pressure centers of warm fronts are usually low and the pressure read by a barometer will decrease due to an incoming warm front
The general direction of motion of warm fronts is from southwest to northeast with warmer and moist air behind the warm front than air into which the front flows. Therefore, warm fronts normally results in moderate precipitation or rainfall or snow.
The frontal system that is most likely approaching is a WARM FRONT.
A warm front occurs when a warm air mass moves over a cooler air mass.The cooler air mass is denser, thereby remaining close to the ground.A warm front is generally associated with low pressure centers.The low pressure centers show lower pressure at the center compared to the outside. As the air rises, water vapor within condenses into water droplets, thereby forming clouds and thus also precipitations.In conclusion, the frontal system that is most likely approaching is a WARM FRONT.
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Which phrases describe sedimentary rock?
Answer:
Sedimentary rocks are types of rock that are formed by the accumulation and cementation of small particles of mineral or organic particles on the floor of oceans or other bodies of water at the Earth's surface
Explanation:
What carbon dioxide can be Direct effect on kelp?
Ecological function they play in preserving the stability and health of the nearshore marine ecosystem, sea otters are regarded as a keystone species.
What is keystone species?Sea urchins and other herbivorous invertebrates are allowed to graze through vast expanses of huge kelp forests unchecked in the absence of sea otters, leaving behind them desolate coastal habitat that once functioned as nurseries for fish, seals, and swarms of other sea life.
A recent study that was just released in the journal Frontiers in Ecology and the Environment shows that otters have an impact on our atmosphere's carbon levels in addition to the habitat that kelp forests provide.
Kelps are very young plants, but they extract enormous amounts of carbon from the atmosphere, a process known as "primary productivity."
Therefore, Ecological function they play in preserving the stability and health of the nearshore marine ecosystem, sea otters are regarded as a keystone species.
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True or false?
Birds and reptiles are homeothermic
Answer:
False
Explanation:Most mammals, including humans, as well as most birds are endothermic homeotherms, while most fish, invertibrates, reptiles, and amphibians are ectothermic poikilotherms.
I'm not very good in science but i hope this helped (b ᵔ▽ᵔ)b
J. A. Moore investigated the inheritance of spotting patterns in leopard frogs. The pipiens phenotype had the normal spots that give leopard frogs their name. In contrast, the burnsi phenotype lacked spots on its back. Moore carried out the crosses in the table, producing the progeny indicated. (Moore, 1943).
Cross Parent phenotypes Progeny phenotypes, observed
1 burnsi x burnsi 39 burnsi, 6 pipiens
2 burnsi x pipiens 23 burnsi, 33 pipiens
3 burnsi x pipiens 196 burnsi, 210 pipiens
Calculate the expected numbers of progeny.
Identify the expected phenotypic ratios for the progeny of the burnsi x burnsi cross. Define the burnsi allele as B and the pipiens allele as B+.
a. 2 burnsi : 1 pipiens.
b. 1 burnsi : 1 pipiens.
c. 3 burnsi : 1 pipiens .
Before the chi‑square test can be used to evaluate the fit of the observed data, the expected numbers of progeny need to be determined. In this burnsi × burnsi cross, how many progeny would be expected for the burnsi phenotype, assuming there are 45 total progeny? In this burnsi × burnsi cross, how many progeny would be expected for the pipiens phenotype, assuming there are 45 total progeny? pipiens progeny:
Answer and Explanation:
Available data:
burnsi x burnsi --> 39 burnsi, 6 pipiens --> N= 45 individualsburnsi x pipiens --> 23 burnsi, 33 pipiens --> N= 56 individualsburnsi x pipiens --> 196 burnsi, 210 pipiens --> N= 406 individualsN= Total number of individuals in the F1.
B is the burnsi allele and B+ is the pipiens allele.
Expected numbers of progenyCross 1: burnsi x burnsi
The products of this cross include pipiens individuals, which means that both the parental have the recessive allele, B+
Parental) B B+ x B B+
F1) Expected genotype: 25% =1/4 B B, 50% = 2/4 B B+, 25% = 1/4 B+B+
Expected phenotype: 75% = 3/4 burnsi and 25% = 1/4 pipiens
Expected number of the progeny: We know that the total number of individuals in the F1 is 45, which is 100% of the progeny. We need to calculate what are the expected numbers according to the expected proportions. So,
100% of the progeny---------45 individuals
25% B B -------------------------X = (25 x 45)/100 = 11.25 individuals B B
50% B B+------------------------X = (50 x 45)/100 = 22.5 individuals B B+
25% B+ B+ ----------------------X = 11.25 individuals B+ B+
33.75 individuals are expected to be burnsi, and 11.25 individuals are expected to be pipiens.
Cross 2: burnsi x pipiens
Parental) B B+ x B+ B+
F1) Expected genotype: 50% =2/4 B+ B, 50% = 2/4 B+ B+
Expected phenotype: 50% = 2/4 burnsi and 50% = 2/4 pipiens
Expected number of the progeny: We know that the total number of individuals in the F1 is 56, which is 100% of the progeny. We need to calculate what are the expected numbers according to the expected proportions. So,
100% of the progeny---------56 individual
50% B B+------------------------X = (50 x 56)/100 = 28 individuals B B+
50% B+ B+ ----------------------X = 28 individuals B+ B+
28 individuals are expected to be burnsi, and 28 individuals are expected to be pipiens.
Cross 3: burnsi x pipiens
Parental) B B+ x B+ B+
F1) Expected genotype: 50% =2/4 B+ B, 50% = 2/4 B+ B+
Expected phenotype: 50% = 2/4 burnsi and 50% = 2/4 pipiens
Expected number of the progeny: We know that the total number of individuals in the F1 is 406, which is 100% of the progeny. We need to calculate what are the expected numbers according to the expected proportions. So,
100% of the progeny---------406 individual
50% B B+------------------------X = (50 x 406)/100 = 203 individuals B B+
50% B+ B+ ----------------------X = 203 individuals B+ B+
203 individuals are expected to be burnsi, and 203 individuals are expected to be pipiens.
The expected phenotypic ratios for the progeny of the burnsi x burnsi crossThe correct answer is option c. 3 burnsi : 1 pipiens. Both parentals are heterozygous, which means that the F1 ratio is expected to be 3:1, (1/4 B B and 2/4 B B+) : (1/4 B+ B+)
Expected burnsi phenotype progeny from the burnsi × burnsi cross, where N= 45Expected burnsi phenotype: 75% = 3/4 burnsi and 25% = 1/4 pipiens
1. Why is cell division important
Answer:
Cell division is important because it serves as a means of reproduction in unicellular organisms through binary fission.
Colonial leaders justified their plan to become independent from England by arguing that
colonists should have the same freedom of speech as Parliament.
the judicial branch of government, not the king, should interpret laws.
King William should have ended the Dominion of New England.
the king had violated their rights and had lost the right to rule them.
Answer:
The answer is D.
Explanation:
Colonial leaders justified their plans for independence from England by arguing that the king had violated their rights and had lost the right to rule them. So, the correct option is (D).
What are Colonialism?Colonialism is described as the control by one power over a dependent territory or people, which occurs when one nation subjugates another, conquers and exploits its population, often to its own advantage. By imposing language and cultural values on their people.
It is defined as the practice or policy of control by a person or other people or territories, often by colonization and usually for the purpose of economic dominance. In the process of colonization, colonizers may impose their religion, language, economics, and other cultural practices.
Thus, Colonial leaders justified their plans for independence from England by arguing that the king had violated their rights and had lost the right to rule them. So, the correct option is (D).
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Describe the areas of carbon storage in the carbon cycle.
Answer:
The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.
To make a conclusion from a X2 test, we need the following:
| - the null hypothesis
II - the degrees of freedom in your data
III - your observed data
IV - the critical value to compare with your X2 value
V - the expected value for your data
a. I only
b. I, II, II, IV
c. I, III, IV
d. I, II, III, IV, V
Answer:
b
Explanation:
