Answer:
the answer is b, cuticle. hope this helps!
Answer:
The answer is Cuticle.
Explanation:
The waxy covering on plant leaves, young stems, and fruit is called the "cuticle". It is composed of cutin, a wax-like material produced by the plant that is chemically a hydroxy fatty acid. The purpose of this covering is to help the plant retain water. Hope this helps!
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
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
I took the test
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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.
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:
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.
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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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:
Which part of the compound light microscope provides the light source? (4 points)
Image of a compound microscope with letters A to F showing various parts. A is used for magnification and is at the top of the microscope. B is used to maintain proper distance between lenses. C is used for magnification and has three pieces that turn. D lets light into the slide. E supports the slide. F reflects light towards the eyepiece.
Group of answer choices
Part E
Part B
Part F
Part A
Answer:
part F of the microscope is the compound light
Explanation:
Among the given options, part F of the compound light microscope provides the light source. Thus, the correct option for this question is C.
What is a Light microscope?A light microscope may be defined as a type of laboratory instrument which is significantly used to view objects or samples which are extremely small to be seen with the unaided eye.
According to the context of this question, the components of the compound microscope are divided into six parts. Among these, each part carries a special function. For example, part A is used for magnification and is at the top of the microscope. While part B is used to maintain proper distance between lenses. and so on.
Similarly, part F significantly reflects light towards the eyepiece. This is the region or component that typically provides the light source to the compound light microscope.
Therefore, part F of the compound light microscope provides the light source. Thus, the correct option for this question is C.
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What is contained in the nucleus of an atom?
a
Electrons and Protons
b
Protons and Neutrons
c
Protons only
d
Electrons only
Answer:
Protons and neutrons can be found in the nucleus of an atom.
Answer: C Protons only
Scientist of Georgia.
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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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:
Earth's mantle consists of
A) solid rock
B) molten rock
C) liquid metal
D) gases
Answer: b
Explanation: because the lava
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
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.
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.
When you run around a track, which type of energy are you
demonstrating?
a mechanical energy
b potential energy
c kinetic energy
d two of the above
Answer:
Kinetic Energy
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:
In which stage of the energy flow does carbon move from the non living to the living environment
Answer:
photosynthesis
Explanation:
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 the main advantage to using satellites to measure climate change?
a. They can measure aspects of climate globally.
b. They are unaffected by the weather conditions they measure.
c. They are a universal tool for measuring all factors of climate.
d. They can measure the amount of rainfall a specific area receives.
Answer:
What is the main advantage to using satellites to measure climate change?
Explanation:
answer A...Satellites in a low earth orbit can directly monitor the climate from their position within or just above the atmosphere, and can provide near-global coverage as they scan over different swathes of ground with each orbit.
A. Satellites can measure aspects of climate globally is the main advantages of using a satellite to measure climate condition.
How do satellites measure climate?In geostationary circle, satellites can persistently screen a specific district continuous. Satellites in a low earth circle can straightforwardly quantify the environment condition from over the air and can give close worldwide inclusion as they filter over various wraps of ground with each circle.
What is used to measure climate?Thermometers, downpour checks and different instruments are utilized to track the climate. Also, mechanized organizations of logical instruments screen climate and environment at the entire hours of the constantly, from one side of the planet to the other.
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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:
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:
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:
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:
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:
. 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
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:
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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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%
Hi! Thanks for asking your question here on Brainly!
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.
Hope this helped :D Happy holidays!
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
