Answer:
Reducing the amount of light improves contrast, making the specimen "stand out" against the background. Some microscopes have an annular condenser, which is a plate under the stage that can be rotated. The plate consists of holes of different diameter.
Explanation:
In the experiment by Nirenberg and Matthaei described in the animation, why does it make biological sense that the U2 oligonucleotide showed such poor ability to bind to ribosomes and tRNA charged with phenylalanine
We have that for the Question "In the experiment by Nirenberg and Matthaei described in the animation, why does it make biological sense that the U2 oligonucleotide showed such poor ability to bind to ribosomes and tRNA charged with phenylalanine"
Answer:
This is because, the genetic code could not involve a two-base codon because such a system would not provide enough unique codons to cover all 20 amino acids.
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Which of the following best describes hematuria?
the correct answer is *Blood in the urine
If this site wants unproven or incorrect answers and deletes correct answers with proof, then wow.
Answer:
Blood in the urine is correct
Explanation:
Photolysis is a part of which cycle? a. Phosphorus b. Oxygen c. Nitrogen d. Carbon Please select the best answer from the choices provided A B C D.
Answer:
B Oxygen
Explanation:
it's the answer for your question..
Answer:
It is B
Explanation:
According to scientific evidence, the age of the earth is about _____ years. 4.6 billion 3.5 billion 7.2 billion 2.3 billion
Answer:
about 4.6 billion years old
A muscle __________ (which is actually one long muscle cell) has hundreds of nuclei along its length to speed up the chemical processes that must occur before it can contract.
What part of a plant cell responds to turgor pressure? *
Answer:
Cell wall. The plant cell wall accounts for the turgidity and the rigidity in plants. The cell wall protects the plant cell from bursting due to the influx of water. Rather than bursting, the cell is able to withstand the osmotic pressure exerted by the water molecules.
To maintain homeostasis, ADH functions via a ______ feedback mechanism that responds to blood ______ concentration.
Answer:
negative, salt
Explanation:
ADH functions via a negative feedback mechanism that responds to blood salt concentration to maintain homeostasis.
What is homeostasis?In order to maintain a constant state between internal conditions and the external environment, a cell's response to its environment is known as homeostasis.
Because of their complexity and uniqueness to living things, the coordinated physiological responses that keep the majority of the body's dynamic equilibrium in place have been given the name "homeostasis."
Ex: When it's cold outside, we start to shiver and use energy to stabilize our body temperature. This is where the cell regulates cell temperature, fluid balance, sugar balance, etc. through it.
Therefore, there is negative feedback that responds to blood salt concentration.
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Which organelle is the control center of the cell; contains DNA; only found in Eukaryotic cells?
A. Mitochondria
B. Nucleus
C. Lysosome
D. Ribosome
Fill in the Blanks
Cancer occurs when there is a _____________ in the gene. Division in cancer cells is _______________. Cancer cells crowd out other __________cell and function _________________. They can also _____________the correct functioning of major organs.
Answer:
Disease
Propatogenic
Cell
include
how does the flow rate through capillaries affect the gas exchange rate between the blood in capillaries and interstitial fluid?
Answer:
the gas starts to bow
Explanation:
The flow rate through capillaries affect the gas exchange rate between the blood in capillaries and interstitial fluid by gas starts to blow.
What is interstitial fluid?In terms of nutrition, interstitial fluid serves as a sort of refueling station for our cells. Salt, fatty acids, glucose, and minerals like calcium, magnesium, and potassium are all present in interstitial fluid.
Blood capillaries are where the nutrients in interstitial fluid are obtained. Additionally, metabolic waste products can be stored in interstitial fluid.
A continuous glucose monitor will use a formula to offer a near estimate of what our blood glucose level is likely to be at that particular moment because the glucose level in interstitial fluid is not exactly the same as that in our blood.
Therefore, The flow rate through capillaries affect the gas exchange rate between the blood in capillaries and interstitial fluid by gas starts to blow.
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Which statement best describes the subscapularis muscle?
Answer:
b. is correct
Explanation:
You live in Florida, and you have decided to prepare your home for hurricane season. Which of the following actions would least help you achieve your goal?
A) purchasing a battery-powered cell phone charger
B) storing several gallons of water in closed, plastic containers
C) replacing your wooden front door with a door made of glass
D) filling your pantry with canned goods and other non-perishable food items
Answer:
D) filling your pantry with canned goods and other non-perishable food items
a person's physical and sexual development is controlled by the
A. nervous system
B. endocrine system
C. Circulatory system
D. Muscular system
E. Other
Answer:
E
Explanation:
which enzyme is responsible for facilitating the hydrogen bonding between nucleotides
Answer:
The enzyme in charge of this is called a helicase (because it unwinds the helix). Which enzyme is responsible for facilitating the hydrogen bonding between nucleotides in a new DNA model? The DNA enzymes polymerase3 facilitates the hydrogen bond between nucleotides.
mucous membranes are an example of which type of tissue?
Answer:epithelial
Explanation:
the specialized organelles that carry out photosynthesis are called
Answer:
Chloroplasts
Explanation:
3. The presence of starch can be tested by using
iodine test
We can test for starch with the help of an iodine test. Soak any food items, namely potato, in drops of iodine for some time. If it turns blue-black afterwards, it contains starch. The liquid used for testing starch is an iodine solution.
PLEASE HELP ME IM TIMED!
Answer:
D. (The last one)
Explanation:
Everything starts with a cell and you grow by gaining more.
Describing Cause and Effect Select the question mark. Choose the cause that brings about the effect. option a: the chicks hide in tall grass. b: not much grass grows on the nesting grounds. c: the chicks parents bring him good. d: the gray chick hatches.
Answer:
Cause: Not much grass grows on the nesting grounds
Effect: Some Arctic tern chicks have nowhere to hide
which soil composition would be the best choice for lining a landfill?
Answer:
Loamy or silty soils that are free of large stones and excess gravel are the best cover for a landfill. Clayey soils may be sticky and difficult to spread; sandy soils are subject to wind erosion.
Explanation:
which body parts does a turkey use to fight predators
Answer:
When fighting off predators, turkeys may kick with their legs, using the spurs on their back of the legs as a weapon, bite with their beak and ram with their relatively large bodies and may be able to deter predators up to the size of mid-sized mammals.
Explanation:
Answer: When fighting off predators, turkeys may kick with their legs, using the spurs on their back of the legs as a weapon, bite with their beak and ram with their relatively large bodies and may be able to deter predators up to the size of mid-sized mammals.
Explanation:
explain the effects of removing one organism from a terrestrial food web
Answer: If one species in the food web ceases to exist, one or more members in the rest of the chain could cease to exist too. A plant or animal doesn't even have to become extinct to affect one of its predators.
Explanation:
2.4 da.L = ____________ L
1 dal = 10L
Therefor, 2.4 dal = 2.4 x 10 = 24
Our answer: 24
What are the differences between an onion and a whitefish cell
what happens to an ecosystem if its river is destroyed
Answer:
the earth will eventually crack amd form a new river and the clouds will precipitate and cause water for the stream of the river
Answer:
If the river was to be destroyed it would take away many native plants and water to farms, homes, businesses, and schools that are local can be taken away.
Explanation: Rivers nourish entire ecosystems and give habitat to native plants and animals.
b19 , b20
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mendel’s experimental method involved using true breed parental plants for each of the traits he studied in the monohybrid cross. why was this vital to the outcomes of the experiment?
Given what we know about Mendel and his experiments, we can confirm that the benefit of his using true breed parental plants was that it added accuracy and precision to his experiment.
The experiment mentions the use of true breed parental plants for each trait that was studied. A true breed or true-breeding organism is one that will ensure the inheritance of certain physical traits to its offspring through every generation. This is also commonly referred to as a purebred.
The importance of this detail in Mendel's experiments is that it functions as the control variable for the experiment. This is a variable that is maintained constant so that when a change occurs, we can attribute it to other factors and therefore add accuracy to the experiment. Therefore, by starting with purebred parental plants, Mendel could better identify the cause of inheritance for the traits.
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Based on cell theory, which of these answer choices would describe one reason a virus is considered nonliving?
Answer: Viruses are complicated assemblies of molecules, including proteins, nucleic acids, lipids, and carbohydrates, but on their own they can do nothing until they enter a living cell. Without cells, viruses would not be able to multiply. Therefore, viruses are not living things.
can hamsters eat dragon seeds?
Answer:
please mark as brains list
Explanation:
No hamsters can not eat dragon fruit because the seeds will choke them and also it has toxic things that hamsters can not eat, but only humans can, but here are the list of fruits they can eat.
Apple (seedless)
Banana
Blackberries
Blueberries
Cantaloupe.
Cherries
Cranberries
The movement of water across cellular membranes through aquaporins is known as?(1 point)
endocytosis
active transport
simple diffusion
osmosis
Answer:
- osmosis -
Explanation:
The quick trick is that osmosis can only occur in water or insolvent movements!
Think of fish, fish have a lot to do with osmosis because the water will go through the fish's skin/gills which will help them breathe and thrive.
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The movement of water across cellular membranes through aquaporins is known as osmosis. Water moves down the concentration gradient. The fourth option is the correct answer.
How do molecules move across the cell membrane?Molecules can pass the cell membrane both actively and passively. In passive transport, no energy or ATP is required. Molecules can move from a higher concentration to a lower concentration.
Diffusion and osmosis are examples of passive transports. In diffusion, gases and other small molecules pass the cell membrane from a higher to a lower concentration. Water is a polar molecule, so it doesn't pass the membrane due to its nonpolar nature. Cells have aquaporin channels that are made for water.
Through aquaporins, water passes into the cell. This is called osmosis. In active transport, energy is required. When a molecule passes from a lower concentration to a higher concentration, energy is needed. An example is sodium-potassium ATPase.
Hence, the correct answer is osmosis. The fourth option is the correct answer.
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