Answer:
Uracil
Explanation:
Uracil is only found in RNA; thymine is its replacement in DNA.
Answer:
UracilExplanation:
In RNA, uracil is a nitrogenous base that replaces thymine. uracil only forms two hydrogen bonds with adenine.
Describe the movement of the tectonic plates in model D. What is this situation called?
Plates at our planet's surface move because of the intense heat in the earth's core that causes molten rock in the mantel layer to move.It moves in a pattern called a convection cell forms when warm material rises,cools,and eventually sink down.
What is the name of a group of connected and related organisms?
A. System
B. Energy
C. Flow
D. Matter
Answer:
B
Explanation:
I think it B cause everything in the body uses energy
Answer:A
Explanation:System
PLZZZZZZZZ HELP WILL GIVE BRAINLIEST
A scientist is researching the biochemical reactions that take place during digestion in frogs. The scientists is simulating frog digestion in a lab setting and adds the enzyme, lipase, to the substance to be broken down.
How will the enzyme speed up this chemical reaction?
A.The enzyme will lower the activation energy of the chemical reaction.
B.The enzyme will be reproduced as a result of a chemical reaction.
C.The enzyme will increase the activation energy of the chemical reaction.
D.The enzyme will add heat to the chemical reaction.
Answer:
Your answer should be A.) The enzyme will lower the activation energy of the chemical reaction. I hope this helps you! :D
The enzyme will lower the activation energy as it will increase the rate of the reaction. So the correct option is A.
What is the activation energy of enzymes?A chemical reaction's rate and activation energy are tightly correlated. Particularly, the chemical reaction will occur more slowly the greater the activation energy. This is due to the fact that molecules can only finish the reaction after climbing the activation energy barrier. Less molecules will have enough energy to cross the barrier at any one time as the barrier rises.
Similar to the hydrocarbon combustion example, the majority of chemical reactions that occur in cells have activation energy that is too high for the processes to progress considerably at room temperature. This first appears to be a concern since a spark inside a cell cannot be ignited without inflicting harm.
Fortunately, it is feasible to reduce a reaction's activation energy and so speed up the process. Catalysis is the process of accelerating a reaction by lowering its activation energy, and a catalyst is a substance that is introduced to do so.
Therefore the correct option is A.
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Which of the following is a complementary base pair for DNA?
Adenine and thymine
Guanine and adenine
Guanine and uracil
Cytosine and thymine
Answer:
adenine and thymine
Explanation:
The four nitrogenous bases of DNA are thymine, adenine, guanine, and cytosine. Guanine and cytosine are bound together by three hydrogen bonds; whereas, adenine and thymine are bound together by two hydrogen bonds. This is known as complementary base pairing.
What does HEPA stand for in HEPA filter?
O a. High-Energy Particulate Arrestance
O b. High-Energy Particulate Air
O c. High-Efficiency Particulate Air
d. High-Efficiency Passing of Air
Answer:
high efficiency particulate air
Explanation:
Please for the love of lawd help.
Three pieces of evidence of universe expansion support the Big Bang Theory. The first piece of evidence, which Edwin Hubble discovered, is that_____
The second piece of evidence is the change in universal temperature. The temperature_____
The third piece of evidence is that Cosmic Microwave Background radiation is found______
:: uniformly across the universe
:: has increased dramatically
:: galaxies are moving toward each other
:: galaxies are moving away from each other
:: has decreased dramatically
1)a distant luminous object travels rapidly away from an observer.
2)Dark matter provides the gravity that allows the stars to rotate at the same speed.
3)1 galaxy is moving away from each other 2 has decreased dramatically 3 uniformly across the universe
4)1 matter 2 formations of galaxies 3 remained uniform
5)Nuclear fission takes place in the core of stars.
6)The gravity of dark matter distorts light from distant sources.
7)They both occur in the nucleus of an atom. -They both release large amounts of energy.
8)It is the proportion predicted to be present in the early universe.
8)Through dark energy, the universe is expanding at a faster and faster rate. -Because of dark matter, gravitational interactions cause galaxies to develop.
9)It verifies that the early universe was once extremely hot.
Hello, Connexus friends hopes this helps this is all the review questions + they correct cuz I got 10 out of 10 let me know if you need help!
The first piece of evidence Hubble has discovered is that galaxies are moving away from each other. The second piece of evidence is that the universal temperature has increased dramatically. The third piece of evidence is that cosmic microwave background radiation is found uniformly throughout the universe.
We can arrive at this answer because:
The Big Bang theory claims that the universe and all of its elements arose from a strong explosion.Although it is a debated and questioned theory, Edwin Hubble found evidence that proves its veracity and is accepted by many scientists.Within this evidence, Hubble claims that the universal temperature continues to increase drastically, which causes the galaxies to move away.The Big Bang was generated from a large amount of pressure and temperature, which caused the universe to expand, so Hubble's evidence may be true.Furthermore, Hubble claims that cosmic microwave background radiation is found uniformly throughout the universe and that this is a trace of the Big Bang.
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LS2-1 A student has two flasks of growing algae. To one flask they add some phosphorus, while leaving the other flask
alone. The student monitors population numbers of the algae daily for ten days. Based on the graph of the results,
what conclusion can be made about the algae population and phosphorus?
A) The phosphorous did not change the carrying capacity of the environment. B) The carrying capacity of the environment was fixed. C) The phosphorous decreased the carrying capacity of the environment. D) The phosphorous increased the carrying capacity of the environment.
[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]
The Correct choice is D
As we can observe through the given graph, the algae population in the flask with phosphorus is increasing rapidly with respect to the algae population in flask without phosphorus, so we can conclude that :
The phosphorus increased the carrying capicity of the environment.
The best explanation as to why onion cells do not burst, but red blood cells often do when placed in distilled water.
Answer:
the red blood cells have only a cell membrane, which does not protect them from bursting . the onion cells do not have a cell wall that could protect them from bursting . the onion cells have a cell membrane, which can protect them from bursting
true or false The cell-cycle control system operates primarily by a timing mechanism, in which the entry into one phase starts a timer set for sufficient time to complete the required tasks. After a given amount of time has elapsed, a molecular “alarm” triggers movement to the next phase.
Answer:
FALSE
Explanation:
Answer:
I'm pretty sure false
Explanation:
Which of the following particles has almost no mass?
O proton
O neutron
O electron
vision depends on an image to be projected onto the?
Answer:
the light-sensitive retina
Explanation:
I'm not sure if I'm right
Pseudopodia is temporary .........
a. cell
b. cilia
c. part of cell
d. locomotary organ.
Pseudopodia are temporary projections of the cell membrane of eukaryotic cells. And by temporary, it means that it is not a fixed structure. Single-celled organisms characterized by the ability to form arm-like protrusion that can be protracted or retracted are referred to as amoebae.
What are the characteristics of muscle?
Answer:
-It thrives during times of intense, or sustained, physical activity.
-The need for increased carbohydrates to sustain that extra level of exertion.
-It's the primary tissue in the human body with herculean strength which makes it very efficient at doing heavy work.
-It becomes rigid when it becomes depleted of oxygen, which is what causes cramping around muscles during intense bouts of exercise where you are doing something like sprinting or weight lifting too fast for your body to keep up through oxygenation alone. This is called anaerobic glycolysis - where there isn't enough oxygen present to use all the sugars being metabolized by your muscles even NEEDED by their quick contractions.
In the Miller/Urey experiment, what are 3 reactants and 3 products?
Answer:
The experiment used water (H2O), methane (CH4), ammonia (NH3), and hydrogen (H2).
Explanation:
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a) What is the link between the age and the weight of the animal ?
Answer:
the bigger it gets the more wheight it gains its the common cycle of life
Explanation:
What organ takes water from food into the blood stream
Answer:
Small intestine
Explanation:
The small intestine's walls absorb water and digested nutrients into your circulation. The waste products of the digestion process go into the large intestine while peristalsis proceeds.
True or false
Jupiter's volume is more than 1000 times that of Earth.
it's true Jupiter's volume is greater
Answer:
True
Explanation:
Jupiter's volume is 1,321 times larger than Earth.
Which phrase is most similar in meaning to scientific theory
Answer:
a rigorously tested explanation
Explanation:
that's what scientists call the scientific method/theory!
have a fantastic day !
Which of the following is a reactant during cellular respiration?
Carbon dioxide
O Glucose
O Energy
O Water
Answer:
Glucose.............
Answer:
The reactants are Glucose and Oxygen. So Glucose is the answer.
Explanation:
Hope this helps!!
Which organelle would not be found in a prokaryotic cell? A) nucleus b)cell membrane c)Cytoplasm d)Genetic material
Answer:
[tex]A) nucleus[/tex]
True or false: competition between organisms involves both biotic and abiotic factors
Water moves via osmosis
Answer:
Water moves via osmosis from an area with high concentration to an area with low concentration.
Explanation:
Active and passive transport are important processes that help the cell
Active and passive transport are the two main biological processes that play a crucial role in supplying nutrients, oxygen, water and other essential molecules to the cells along with the elimination of waste products. In essence, active and passive transport work for the same goals/ purposes, but with different movement.
how the Integumentary System interacts with nature
Answer:
to protect the inside of the body from elements in the environment—like bacteria, pollution, and UV rays from the sun.
Explanation:
Deforestation, the chopping down of large numbers trees for human use, is considered to have a negative impact on climate change. Why do you think this is the case?
Answer:
it is because plant releases oxygen into the air for other living thing to breath
HELPPP - Sickle cell disease is a recessive trait in humans. In a cross between parents heterozygous for sickle cell disease, what is the probability that of 6 children having 3 anemic and 3 non-anemic children?
What benefits do you see in genetic testing, if any?
What concerns do you have about genetic testing, if any?
Would you want doctor prescribed genetic testing/screening done?
Would you want voluntary genetic testing/screening done (e.g. 23 and me)?
Answer:
Genetic testing has potential benefits whether the results are positive or negative for a gene mutation. Test results can provide a sense of relief from uncertainty and help people make informed decisions about managing their health care. For example, a negative result can eliminate the need for unnecessary checkups and screening tests in some cases. A positive result can direct a person toward available prevention, monitoring, and treatment options. Some test results can also help people make decisions about having children. Newborn screening can identify genetic disorders early in life so treatment can be started as early as possible.
Explanation:
There are many points during the cell cycle when the process of division may stop because of a problem. Sometimes the process doesn’t stop. Summarize the function of apoptosis in the cell cycle.(1 point)
to destroy damaged or old cells
to destroy damaged or old cells
to facilitate cell reproduction before the cell cycle restarts
to facilitate cell reproduction before the cell cycle restarts
to allow the cell to rest before the cell cycle restarts
to allow the cell to rest before the cell cycle restarts
to repair damaged or old cells
to repair damaged or old cells
The function of apoptosis in the cell cycle is to destroy damaged and/or old cells. In this case, we can consider that the first answer option is the correct option.
Apoptosis is a programmed death, where the cells promote massive destruction when they "realize" that they can create problems for the organism.
This process takes place as follows:
A cell retraction begins so that the cell cannot adhere to other cells or substances.The chromatin becomes condensed.The cell membrane elongates, forming structures known as "blebs."The cell nucleus disintegrates completely.The blebs break off, forming an apoptotic body.The apoptotic body is unprotected from the action of phagocytes that can destroy the molecule.More information:
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Answer:
To destroy damaged or old cells
Explanation:
1. To destroy damaged or old cells
2. M
3. Cancer
4. Checkpoints stop the cell cycle when errors are detected.
5. G2 Checkpoint
The number of bacteria in saliva samples was determined by collecting the saliva, making serial dilutions, and inoculating nutrient agar by the pour plate method. The plates were inoculated aerobically for 48 hours at 37°C.
What can you conclude from this data? Why?
Answer:
3.7808=5c
Explanation:
According to the given data, mouthwash A decrease the growth of the bacteria in saliva due to antiseptic ingredients, B decrease the maximum, and C is the least effective.
How bacteria present in the saliva are collectively removed?In the saliva, there are some enzymes that can remove by killing certain types of bacteria, by using mouthwash it can be removed according to the efficiency of the mouthwash.
In the experiment number of bacteria in saliva samples was determined by collecting the saliva, after serial dilution, bacteria are inoculating in nutrient agar by the pour plate method, and these plates were inoculated aerobically for 48 hours at 37°C.
The complete data is attached in the image below.
Therefore, Mouthwash B > Mouthwash A > Mouthwash C is effective to remove bacteria.
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The given question is incomplete, so the most probable complete question is attached in the image.
Select the answer below that correctly describes the steps of sporulation.
O a. DNA replication, formation of a double layer of membrane, cortex formation, spore release
O b. DNA replication, spore release, cortex formation, formation of a double layer of membrane
O c. Formation of a double layer of membrane, DNA replication, spore release, cortex formation
O d. Cortex formation, formation of a double layer of membrane, DNA replication, spore release
Answer:
I think that the answer is c. If not then it is probably d or a.