Which is a way that RNA diffet's from DNA?
A. uracil base
B. 3-stranded
C. no phosphate group
D. connected by peptide bonds
Answer:
A. Uracil BaseExplanation:
Slight sure
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Which fat is absorbed by the villi in the small intestine?
Unsaturated fat
Saturated fat
Both
Answer:
saturated
Explanation:
the intestine absorbs saturated fat
Jaiden once loved going to the doctor's office because the doctor would give him a sticker. However, the last three times he has gone, Jaiden received painful shots that caused him to cry. Now when the doctor hands him the sticker, he begins to scream. Which of the following is the neutral stimulus?
Shot
Screaming in pain
Sticker (after the conditioning)
Scream
Sticker (before the conditioning)
Suppose a volcano sent large amounts of ash into the air that blocked the sunlight over a large area of ocean water for several months. Would this affect life in the ocean? Explain why or why not.
What does each person do just before becoming infected?
Answer:
They became careless and transferred to every body saying i cant all of us has to die
Label each part of the cell! 100 POINTS!!
Answer:
Where is the question photo
Carl Woese developed his system of classification among groups of organisms based on DNA sequences of
Answer:
Carl Woese developed a method of using ribosomal RNA to compare the relationship between microorganisms and has now been extended as a means to classify all organisms.
Explanation:
Neurons have special proteins in their
cell membranes that allow them to generate
electrical current. Are these proteins most
likely produced by ribosomes on the rough ER
or ribosomes suspended in the cytoplasm?
Explain your answer.
Answer:
The ribosomes on the rough endoplasmic reticulum (RER) most likely produces neuronal special proteins.
Explanation:
Conduction of electrical impulses by action potentials of neurons takes place through controlled flow of charged ions through neuronal membranes. This ion transfer is controlled by specialized neuronal channel proteins which are present in the neuronal cell membrane.
These channel proteins allow for hydrophillic passage of ions and water molecules across the neuronal membranes.
Ribosomes that are attached to the RER are involved in protein synthesis. They carry the code for proteins carried by the mRNA and translate into respective protein.
The RER along with some free ribosomes cluster together as Nissl bodies and are mainly involved in neuronal specialized proteins.
Use this example to explain why natural selection does not operate on a characteristic which affects fitness but is not heritable.
Answer:
What example ? ellaborate.
Explanation:
what is not a branch of biology
Answer:
Geology
Explanation:
Geology is the study of rocks and the earth and is a different field of science
Please help!!
Why are we testing Dl water when we know it does not contain protein?
Answer:
using distilled water as a test substance is a way to show a control in the experiment
Explanation:
distilled water has no impurities therefore it eliminates the sources of any contamination and gives accuracy to an experiment distilled water is also used to know if actually a chemical reaction takes place or not
A student placed some clean rocks in a clear plastic jar. The jar was filled with clean water and covered with a lid. The student then shook the jar up for five minutes. The student noted that smaller pieces had broken off some of the rocks and that there was a fine grit on the bottom of the jar. Which change of Earth's surface was the student modeling? *
A. mechanical weathering
B. chemical weathering
C. erosion of sediments
D. forming deltas
E. I don't know
Answer:
A. Mechanical weathering
Explanation:
Mechanical weathering can speed up weathering by fast, rapidly moving water. In the question, the process was caused when the student shook the jar with water and rocks inside.
Left-handedness (r) is recessive in humans and right-handedness is dominant (R).
Tracy, a left-handed woman, and whose mother and brother are also left-left handed,
marries Sa who is right-handed. Sam's mother is left-handed and his father and sister
are right-handed. What is the expected genotypic ratio of the children Sam and Tracy
might have?
ORr:2rr:ORR
1Rr:2rr:1RR
2Rr:2rr:ORR
The expected genotypic ratio of their children is 2Rr:1rr:1RR.
What is Genotype?This can be defined as the genetic composition of an organism. Since Sam and Tracy possess heterozygous traits, their genotypes will be Rr and Rr.
When this is crossed , we will get :
Rr × Rr
RR Rr Rr rr
This means the genotypic ratio will be 2Rr:1rr:1RR.
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Which of these processes describes the effect Earth’s atmosphere has on Earth’s geosphere?
A. Animals losing their habitat from deforestation
B. Ocean levels rising from glaciers melting
C. The sun evaporating water from a lake
D. Widening of streams from severe weather
Answer:
The answer is B
Explanation:
Answer:
D
Explanation:
Biomass and fossil fuels similarities
Answer: Biomass and Fossil fuels are similar to coal with an oxygen atom added.
Natural gas is the best fossil fuel in terms of energy output per unit carbon dioxide emitted. While Biomass is renewable because a new crop can be grown after each harvest, and biomass is a low carbon fuel.
Explanation: Fossil fuels and biofuels are similar in that they are both formed from once living matter and both emit carbon dioxide when burned for energy.
Adding an organism to a food chain does not affect the other members of the food chain, but removing an organism does.
Please select the best answer from the choices provided
Тruth or false
Answer:
TRUE
Explanation:
The loss of an organism at the bottom of a food chain negatively impacts all organisms in the chain.
An organism takes care of its young and produces few offspring. What type of organism is this?
Answer:
K-strategists
Explanation:
K-strategists are those types of organisms that live in a stable environment and reproduce/give birth to fewer amount of organisms compared to R-strategists. Examples : Human beings, Elephants etc.
The function of enzymes is to -
A
store oxygen in muscle.
B
change the rate of reaction.
с
form the cell membrane.
D
be building blocks for cells
how is atp produced in the photo phosphorylation
Answer:
Photophosphorylation is the conversion of ADP to ATP using the energy of sunlight by activation of PSII. This involves the splitting of the water molecule in oxygen and hydrogen protons (H+), a process known as photolysis.
Explanation:
Photophosphorylation is the conversion of ADP to ATP using the energy of sunlight by activation of PSII. This involves the splitting of the water molecule in oxygen and hydrogen protons (H+), a process known as photolysis.
What happens when enzymes are heated to a high temperature? The enzymes die.
The enzymes' amino acid sequence changes.
The enzymes remain the same.
The shapes of the enzyme are denatured.
Answer:
The shapes of the enzyme are denatured
Explanation:
High temperatures will break the forces that hold them together and control the enzymes.
The enzyme, including it's activity site will eventually change shape and the substrate will no longer fit; proving them ineffective.
Hello ! Really need help with this ! Please and thank you :)
If a person is at rest, they have a respiratory rate of 12 breaths per minute and if they mobilize 500 ml each inhalation and exhalation, which is their tidal volume. In one minute you will mobilize a total of __________ml.
If a person in moderate activity has a respiratory rate of 18 breaths per minute and if in each inhalation and exhalation he mobilizes 500 ml, which is his tidal volume. In one minute you will mobilize a total of __________ml.
Just multiply 500x12=6000
Which of the following best describes the compositional layers of the earth? a. All layers of the Earth below the crust are liquid. b. The only liquid layer of the earth is the mantle. c. The crust floats on top of the outer core. d. Some layers of the earth are liquid, and some are solid. Please select the best answer from the choices provided A B C D
Answer:
The answer to this question is "D" Some layers of the earth are liquid, and some are solid.Explanation:
Core, mantle, and crust are divisions based on composition. The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock. The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid.
The option that correctly describes the compositional layers of the earth is : ( D ) Some layers of the earth are liquid, and some are solid.
Earth compositionThe earth is composed of the Core, mantle, and crust which are categorised based their varying composition. The crust consists of the oceanic crust and continental crust. WhileThe lithosphere is composed of both the crust and the portion of the upper mantle which are similar to brittle rigid solid.
Hence we can conclude that The option that correctly describes the compositional layers of the earth is Some layers of the earth are liquid, and some are solid.
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2. You observe a cell under a microscope and notice a cell wall. You conclude that this cell could be
O A plant cell
O An animal or plant cell
O A plant cell or a bacterial cell
An animal cell
Answer:
a plant cell
Explanation:
plants are the only ones with cell walls
What is the most likely reason that a long beak could be an adaptation for a
bird living in a temperate forest?
A. The bird could use the beak to crack open nuts.
B. The beak would make it harder to hunt prey.
C. It would be more difficult for the bird to reproduce.
D. The beak would allow the bird to hide from predators.
The most likely reason that a long beak could be an adaptation for a bird living in a temperate forest is the bird could use it to crack open nuts.
What is an adaptation?An adaptation is a phenotypic feature that is able to confer an evolutionary advantage to the individual.
In this case, a bird with a suitable beak could allow the bird to crack open nuts and thus increase the evolutionary fitness.
In conclusion, the most likely reason that a long beak could be an adaptation for a bird living in a temperate forest is the bird could use it to crack open nuts.
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Answer:
A. The bird could use the beak to crack open nuts.
Explanation:
The ______ connects the third and fourth ventricles and is found in the mesencephalon (midbrain). Multiple choice question. cerebral aqueduct reticular formation periaqueductal gray matter superior colliculus
The cerebral aqueduct connects the third and fourth ventricles and is found in the midbrain
Cerebral aqueductcerebral aqueduct is a brain structure located in the brain stem which connects third and fourth ventricles. It contains a cerebrospinal fluid ( CSF ). which flows from the third ventricles to the fourth ventricles.
The midbrain is the part of the brainstem associated with hearing, sleep and the regulation of the human temperature.
Hence we can conclude that The cerebral aqueduct connects the third and fourth ventricles and is found in the midbrain
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Composed primarily of pyramidal-shaped zymogenic cells that produce enzymes. What is the primary enzyme produced here, and what substance does it break down
The pyramidal-shaped zymogenic chief cells produce pepsinogens which act on proteins molecules.
What are chief cells?Chief cells are cells are located at the base of the gastric glands found also in the body and fundus of the stomach.
Chief cells are pyramidal-shaped zymogenic cells that produce enzymes such as pesinogen 1 and 11.
The pepsinogens are proenzymes or zymogens and are converted to the active enzymes person 1 and person 11.
Pepsin 1 and 11 are proteolytic enzymes and act on proteins to break them down.
Therefore, chief cells produce pepsinogens which act on proteins molecules.
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what are the symptoms of people living with cancer?
Answer:
1. Fatigue or extreme tiredness that doesn't get better with rest.
2. Weight loss or gain of 10 pounds or more for no known reason.
3. Eating problems such as not feeling hungry, trouble swallowing, belly pain, nausea, and vomiting.
4. Swelling or lumps anywhere in the body.
Which of the following should NOT be included in your conclusion?
A) A statement of whether your hypothesis was correct or not
B) A scientific explanation for
your conclusion
C) A list of materials required for the experiment
D) All of these should be included in the conclusion
Answer:
C
Explanation:
A list of materials required for the experiment is not necessary to include when one gives a conclusion
3. Which of the following best describes a marsh?
deep ocean water miles from a river's mouth
a rocky, coastal area with very high tides
a shallow, sheltered area near an estuary
a sunny, open area with lots of sand dunes
I NEED HELPPPP HURRRYYYY
Answer: a rocky, coastal area with very high tidesa shallow, sheltered area near an estuary
Explanation: because it’s an area low-lying land which is flooded in wet seasons or at high tide, and typically remains waterlogged at all times.
Answer:
C) a shallow, sheltered area near an estuary
Explanation:
A marsh is a shallow, sheltered area generally found near an estuary. They are often between aquatic and terrestrial ecosystems. Like other marine ecosystems, some marshes experience tides. Therefore, these tidal marshes are exposed during low tide and underwater at high tide. Marshes that are not as close to the coast are called nontidal marshes.
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More information on marshes:
The producers that thrive in marshes are herbaceous, meaning they do not have woody stems. Just like estuaries, marshes are rich in nutrients and are home to an abundance of wildlife.
How many miles from the North pole do you have to travel to find the first tree?
Answer:
In the Tagia Forests, 1,000 miles south of the North Pole, in the Arctic Tundra.Explanation:
What is known as the arctic tundra stretches from the North Pole all the way to the south. It's still roughly around 1,000 miles from the North Pole until you reach the Tagia Forests, which are located in the baren snows of the arctic.