Which of the following has no membrane-bound organelles and can reproduce asexually?
А
eukaryote
B
yeast
С
prokaryote
D
algae
what is the function of DNA and RNA
Answer: DNA codes for our genotype, which is the genetic representation of out traits. There are multiple kinds of RNA but it is mostly used to aid the replication of DNA.
Explanation: DNA is the strand of nucleic acid, sugars and phosphate group, that is found in the nucleus and mitochondria of every cell. It codes for our genotype, which is essentially the written representation of our traits. There are multiple kinds of RNA but they are mostly used to replicate DNA, they are single stranded as opposed to the double stranded DNA and include the nitrogen base uracil (U), instead of thymine (T). mRNA, tRNA and dsRNA are commonly used to replicate and regulate the DNA sequence.
Answer:
The two main types of nucleic acids are DNA and RNA. Both DNA and RNA are made from nucleotides, each containing a five-carbon sugar backbone, a phosphate group, and a nitrogen base. DNA provides the code for the cell 's activities, while RNA converts that code into proteins to carry out cellular functions.
Explanation:
RNA:
The central dogma of molecular biology suggests that the primary role of RNA is to convert the information stored in DNA into proteins.
DNA:
The main role of DNA in the cell is the long-term storage of information. It is often compared to a blueprint, since it contains the instructions to construct other components of the cell, such as proteins and RNA molecules.
I HOPE IT HELPED
Why is earth interior layered??
Answer:
The inner core is solid, the outer core is liquid, and the mantle is solid/plastic. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases.
Explanation:
Which of the following happens during the main-sequence stage of a star's life?
It cycles, appearing brighter and dimmer in turns.
It changes the color that it emits.
It increases its distance from the Sun.
It grows continuously smaller and dimmer.
During the main sequence stage of the life cycle of a star, it cycles, appearing brighter and dimmer in turns.
What is the life cycle of a star?The life cycle of a star is a cycle which describes the time from the birth or formation of the star, through its growth and expansion, and then finally the death of the star.
The life cycle of a star occurs in seven stages and occurs over billions of years.
One of the stages is the main sequence stage.
During the main sequence stage of a star's life, it cycles, appearing brighter and dimmer in turns.
Therefore, the life cycle of a star is a cycle from the birth to death of the star.
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What stores genetic information and also transfers the information?
Answer:
Deoxyribonucleic acid
Explanation:
a student failed a test tube to the top with water. at the top of the test tube the water formed a low Dome. he States this occurs because of cohesion. Do you agree with his answer? explain your answer.
Answer:
Yes
Explanation:
Cohesion lets water stay afloat even once it reaches the highest point.
Do an experiment using a penny and droplets of water
PLEASE HELP ME ANSWER THIS AS FAST AS POSSIBLE PLEASE!!!!!
Answer:
i think its a tissue
Explanation:
Sorry if i get it wrong
An organism's ___________ adaptations are its physical traits that help it survive in its environment.
Question 2 options:
abiotic
energy
behavioral
structural
What is BTB changing color evidence for and why?
Answer:
ddd
hauajajsnwnjsjekddidkkdkd
Explanation:
d9d
sjdnejekkejejre
Which is the central element for all living things?
-carbon
-hydrogen
-oxygen
-nitrogen
Answer:
carbon
Explanation:
I took the test and got it right.
Answer: carbon
Explanation:
Why are bacteria considered living, but not viruses? (Include at least 4 reasons)
Which statement is an example of scientific theory?
A. Hummingbirds do not like the color white because they visit other colored flowers more often.
B. The earth is the third planet from the sun and has one moon, which orbits earth.
C. The amount of caffeine that affects a persons heart rate differs based on the persons age.
D. All living organisms are composed of one or more cells, which came from pre-existing cells.
Answer:
I suggest the answer is b
A student performed a lab investigation to determine the effect of temperature on the heart rate of a water flea. What is the independent variable in the investigation? * o specie of flea O temperature O heart rate N O size of flea answer
Answer:
B. Temperature
Explanation:
The heart rate depends on the temperature so the heart rate is dependant and the one that changes is independant
Which explanation correctly describes why it is important for a cell's surface-area-to-volume ratio to not be too small? Radio button Not checked 1 of 4
Answer:
Hello. You did not put the options, but we can say that the execution of mitosis is what makes it important that the proportion between the colume and the cell surface area is not small.
Explanation:
The ratio between the surface area of a cell and the volume is very large and this is essential for mitosis to occur and for all cells in the same tissue to have the same content and the same drum.
If a cell increases ten times its surface area, it will increase its volume a thousand times. This shows that the cell volume has a much larger proportion than the surface. This makes the cell have a fast metabolic rate and needs to absorb many nutrients, in addition to making a strong exchange of gases with the external environment. This absorption of nutrients so intense, is essential for the cell to enter mitosis and generate two equal cells. This is because during the growth phase the cell will increase in volume until the growth limit of its surface area, once this limit is reached, the cell will have to undergo mitosis and will have enough nutrients for the entire process.
When microscopes were first used hundreds of years ago, scientists discovered that a single drop of water contains many particles that the human eye is unable to detect on its own. The microscopes used today are much more powerful and have allowed scientists to make discoveries about smaller living things, such as how germs can make people sick. Which statement best describes the use of microscopes over the last several hundred years?
Answer:
a
Explanation:
edge
When microscopes were first used hundreds of years ago, scientists discovered that a single drop of water contains many particles that the human eye is unable to detect on its own. This statement best describes the use of microscopes over the last several hundred years. Thus, option A is correct.
What are the theories related to microphones?
The statement that best describes the development of the theories that has been connected microscopic as well as macroscopic phenomena has took several hundred years for the scientists just to develop current theories, as well as they are still being revised to this same process.
Most of the scientific theories has been involving the microscopic and the macroscopic phenomenon which have been taken several years to be developed atlast however, this theories are still under revision till date. The microscopes used today are much more powerful and have allowed scientists to make discoveries about smaller living things.
Therefore, This statement best describes the use of microscopes over the last several hundred years. Thus, option A is correct.
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Plant fibres obtained from _____________ and ___________.
Answer:
Plants fibers are obtained from cotton plants and jute plants.
Explanation:
1.0X10 to the negative 7th power mg
Answer:
1.0 × 10-7 milligrams
Explanation:
1.0 × 10-7 milligrams
when a solute is added to water does the water potential increase or decrease
Answer:
It will decrease.
Explanation:
The amount of available potential energy is reduced when solutes are added to an aqueous system
What are two abiotic and two biotic conditions in a coral reef that provide the conditions necessary for it to have high biodiversity?
Answer:
vbfxb
Explanation:
vgjjg
What type of antenna where Penzias and Wilson testing in 1962 that led to their discovery of one of the biggest piece
of evidence supporting the Big Bang Theory
In 1964, Bell Labs scientists Arno Penzias and Robert A. Wilson were conducting experiments with the Holmdel Horn Antenna, an extremely sensitive device originally used to detect radio waves that were bounced off Echo balloon satellites, and later Telstar, the first active communications satellite. These radio waves were so weak, that it became critical to eliminate all possible interference in order to detect them.
Despite taking all conceivable steps to eliminate interference, they continually detected a strange, buzzing noise that was coming from all parts of the sky at all times of day and night. They did a range of additional testing on the equipment, and even removed some pigeons that were nesting in the antenna and their associate detritus. Still, the sound persisted. They ultimately determined that the noise was coming from outside of our galaxy
Almost by chance, they later learned that researchers and astrophysicists Robert H. Dicke, Jim Peebles and David Wilkinson at nearby Princeton University were looking for a way to detect residual radiation that they believed would have resulted from the Big Bang. As it turned out, the radiation detected by Penzias and Wilson was a perfect match for what the Princeton researchers had predicted, and hence made history.
Arno Penzias (left), Robert Wilson (center) and Keith Jefferts (right) look through a model of the universe to the constellation Orion where, for the first time, they discovered carbon monoxide in outer space.
From the archives
An audio recording of the CMBR noise was captured and narrated by Robert A. Wilson. This discovery in 1964 by Penzias and Wilson, announced in a Bell Labs press release, earned the researchers a Nobel Prize in Physics and provided the basis for future astronomical discoveries.
edit-ion think i read that right so this may be not be right but fun fact sorry
what must happen before a chemical recreation can begin?
Answer:
The activation energy must be reached. The catalyst makes lower energy pathways available.
Explanation:
The ___________ is an organ directly associated with the _________ and __________ systems.
a. stomach; digestive; reproductive.
b. pancrease; digestive; endocrine.
c. ovary; female reproductive; lymphsatic.
B. Pancreas; Digestive, Endocrine
The pancreas is an organ directly associated with the digestive and Endocrine systems.
What is Endocrine system?A intricate system of glands and organs makes up the endocrine system. Your body's metabolism, energy level, reproduction, growth and development, and response to injury, stress, and mood are all regulated and coordinated by hormones.
The endocrine system is made up of the following components:
The optic chiasm, where the optic nerves behind each eye intersect, and the hypothalamus are both found at the base of the brain. In the center of the brain, beneath the corpus callosum, is where you'll find the pineal body.
Therefore, The pancreas is an organ directly associated with the digestive and Endocrine systems.
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In what way do erysipelas and exudative epidermitis differ?
A. Erysipelas causes skin lesions, whereas exudative epidermitis causes digestive issues like diarrhea.
B. Erysipelas is a bacterial infection, whereas exudative epidermitis is often caused by a parasite infestation
C. Erysipelas can result in death, whereas exudative epidermitis is less serious and rarely results in fatalities.
D. Erysipelas is caused by streptococcus, whereas exudative epidermitis is caused by staphylococcus.
Answer:
D. Erysipelas is caused by streptococcus, whereas exudative epidermitis is caused by staphylococcus.
Explanation:
Hope this helped!
Science rejects any hypothesis not supported by __________________________ and the results of ___________________________ experiments. what are the blanks?
Answer:
Observations; control.
Explanation:
A hypothesis is considered to be tentative or an educated guess and can be defined as a testable explanation for an observation or a scientific problem. An example of a hypothesis is saying, Corona virus is caused by the introduction of the "5G" technology.
On the other hand, a control experiment can be defined as an experiment in which a condition assumed to be a probable cause of the effect is being compared to the same situation by the scientist without involving or using the suspected condition.
Hence, science rejects any hypothesis not supported by observations and the results of control experiments.
This ultimately implies that, for any hypothesis to be acceptable in science, it must be supported by observations and the results of control experiments; this give rise to factual informations, theories and by extension solutions to problems.
Select the types of government that are considered UNLIMITED governments.
Democracy
Communism
Dictatorship
Monarchy
Constitutional Monarchy
Republic
Parliamentary
Answer:
One I know is dictatorship.
Explanation:
example stalin was the dictator of russia and had passed many laws that nobody else had a say in and would kill or send to prison any peapole who attemed to opose him.
What is lost to the environment at each of the trophic levels of this ecosystem?
Answer:
90% of energy
Explanation:
only 10% of energy is passed on to the next trophic level.
why do people alter their environment
To best accomodate their needs.
Plsss helppp 40 extra points and brainleist
Answer:
The virus lacks strcutures to replicate genetic material.
Explanation:
They can replicate it, but don't have structures to do it without the help of a cell. They USE the cell to replicate it but cannot do it themself.
Virus lacks genetic matrial? It has DNA.
Protective outer shell? Ptotection has nothing to do with it.
Movement? They cannot duplicate without cells.
what are several defenses that keep pathogens from getting inside the body
Answer:
The body has two lines of natural defense to protect against infection. The first are physical barriers, such as the skin, body secretions and mucous membranes. The second line of defense is the immune system. Specialized immune cells coordinate and execute attacks to kill germs that make it past the body's physical barriers.
Ferroplasma acidarmanus falls under what kingdom
Answer:
Euryarchaeota
Explanation:
Ferroplasma
Scientific classification
Domain: Archaea
Kingdom: Euryarchaeota
Phylum: Euryarchaeota