Answer:
true
Explanation:
Answer:
true
Explanation:
when you run your body needs more oxygen filled blood your heart pumps faster to supply this need
How is the dispersive model different from the semiconservative model of DNA replication?
1. In the dispersive model, each strand of both daughter molecules contains a mixture of old and newly synthesized DNA, and in the semiconservative model, each new double helix consists of one old and one new strand.
2. In the dispersive model, the old double helix is degraded, and in the semiconservative model half of its nucleotides are used in the construction of two new double helices.
3. In the dispersive model, one of the two resulting double helices is made of two old strands, and in the semiconservative model the other is made of two new strands.
4. In the dispersive model, one strand of the new double helix is made of DNA, and in the semiconservative model the other strand is made of RNA.
Answer:
It it not, In the dispersive model, one of the two resulting double helices is made of two old strands, and in the semiconservative model the other is made of two new strands.
Answer:
option 1 is correct
Explanation:
in dispersive, each strand of DNA has alternating fragments of old and new DNA while in the semiconservative each new double helix consists of one old and one new strand.
HELP ME I WILL GIVE BRAINIST AWANERR AND On a separate sheet of paper, choose three animals, one that lives in water, one that lives on
land, and one that flies. Explain how each one moves and how it is uniquely adapted for
movement within its environment.
Answer and Explanation:
Land - Lion
Water - Sealion
Flies - Bees
Lions have strong retractable jaws that help them eat their prey and that way they adapt to their enviroment.
The Sealion's thick, oily fur and a layer of blubber allow them to keep a high temperature in cold waters.
A Bees body carries an electrostatic charge that attracts pollen and that way they can keep it in them.
Hope this Helps! Have a GREAT day!
What is meant by “concentration”? How can you increase the concentration of salt (electrolytes) in a solution of water? How can you decrease the concentration of electrolytes in a solution?
Answer:
The concentration of a substance is the quantity of solute present in a given quantity of solution.
Pea flowers are normally self-pollinating which means the sperm cells fertilized eggs cells from blank the same flower
What phase is the moon in when it is not visible in the night sky?
HURRY 10 POINTS
How are S waves and P waves similar?
They shake the ground.
They travel through liquids.
They arrive at the same time.
They vibrate from side to side.
Answer:
answer B D C E
Explain what might happen if the chloroplasts in a cell are not working.
Answer:
The plant cell will not produce chloroplasts, and the plant will not be green any more.
Explanation:
Hope this helps!!
explain step by step where the DNA is located and what equipment they will need to observe the DNA
PLEASE BE QUICK
Gel electrophoresis is a technique used to separate DNA fragments according to their size.
DNA samples are loaded into wells (indentations) at one end of a gel, and an electric current is applied to pull them through the gel.
DNA fragments are negatively charged, so they move towards the positive electrode. Because all DNA fragments have the same amount of charge per mass, small fragments move through the gel faster than large ones.
When a gel is stained with a DNA-binding dye, the DNA fragments can be seen as bands, each representing a group of same-sized DNA fragments.
Introduction
help me pleaaaasseee!!!?? explain how locusts affects crop production and how it can be prevented...
I think this will help
Explanation:
good luck. :)
HELP!! is the digestion of glucose active or passive transport
Answer:
However, there will be times when glucose concentration in the intestine might be lower. When this is the case, movement of glucose involves active transport. The process requires energy produced by respiration .
Explanation:
Answer: However, there will be times when glucose concentration in the intestine might be lower. When this is the case, movement of glucose involves active transport. The process requires energy produced by respiration .
please help! ASAP giving 20 points!
A student outlined the following steps of the lytic cycle of bacteriophage infection of bacterial cells:
1. Virus lands on host cell.
2. Virus injects the capsid containing its DNA into the cell.
3. Viral DNA is used by bacteria to make vinis parts.
4. New viruses are assembled in the bacterial cell.
will award brainliest
You want to determine what vehicle will get you to school in the fastest amount of time. Each day at 6:30am, you drive a different vehicle: a Ferrari, a
Nissan 350ZX, a Mazda RX8, and a Neon SRT4. Your results state that the Ferrari takes you the least time to get to school. The dependent variable in
this experimentis
A.the time that you leave each day (6:30am)
B.the type of vehicle
C.the time that it takes you to get to school
D.the route that you take each day
Answer:
The correct answer would be - option C. the time that it takes you to get to the school.
Explanation:
The dependent variable is the factor or variable in any research or experiment is the variable that depends on the independent variable which means it changes with the change in the independent variable.
Here the time the different vehicle takes to get to the school is a dependent variable as it depends on the fact that which vehicle is using and changes with the change in the type of vehicle.
At the end of mitosis what kind of cells are produced?
A: 4 hapliod cells
B: 2 dipliod cells
C: 4 dipliod cells
D: 2 hapliod cells
Which of the following is NOT a method that has been used to predict earthquakes?
Answer:
Watching changes in weather patterns (Answer Choice 3)
Explanation:
Atmospheric weather cannot indicate impending earthquakes, while the processes described in the other answer choices can.
Answer
Watching changes in weather patterns (3)
The energy stored in food molecules in living cells is gradually released in a series of linked chemical reactions called a ____________.
Which statement correctly describes the significance of meiosis during gamete formation?
Answer:
Explanation:
During sexual reproduction, meiosis generates genetic variation in offspring because the process randomly shuffles genes across chromosomes and then randomly separates half of those chromosomes into each gamete. The two gametes then randomly fuse to form a new organism.
Why is one side of the moon called "the dark side of the moon"?
Answer:
Because much like the Earth, only one side of the Moon receives light, and the side receiving no light is called, "the dark side of the moon."
Explanation:
What is discouraged in a traditional economy?
O family traditions
O work
O stability
O change
Answer:
Explanation:
مرحبًا ، أود أن أحاول مساعدتك في عملك المدرسي. إذا كنت تستطيع أن تشرح أكثر فأنا أقدر ذلك.
each of these rod shaped structures has only 1 copy of the DNA
A.chromatids
B.mutation
C. ribosome
Answer:
Ribosome, I am not sure just a lucky guess! Hope you get it right!!
What current environmental issue is causing hurricanes to be more violent.
Answer:
Sea level rise is making storm surge more dangerous
Storm surge, not wind or rain, is the number one killer in hurricanes, and climate change is making it worse. Sea level has already risen as a result of climate change, and that rate is accelerating around the world
how does density-independent limiting factors
can affect populations
Answer:
Density independent limiting factors also cause population sizes to increase. For example, the water from a flash flood increases the growth of vegetation, thereby providing more food for primary consumers in the ecosystem.
Why was it hard for scientists, non-scientists, and even Darwin to believe in the idea of evolution?
Which of the following correctly identifies the function relationship of covalent bonds?
How do scientists describe the mechanisms (ways) by which genes are inherited (passed down) from parents to children?
Answer:
how did the government failed its citizens during the holocaust
Explanation:
Which factor can cause secondary succession?
clear cutting
glacial melting
competition
predation
Answer:
A
Explanation:
Clear cutting can cause secondary succession. Therefore, option (A) is correct.
Secondary succession is a type of ecological succession that occurs after a disturbance, such as a fire, flood, or clear-cutting of a forest.
Clear cutting refers to the process of removing all trees in an area, leaving behind a bare landscape. This can disrupt the natural balance of the ecosystem and create an opportunity for secondary succession to occur. After clear cutting, the soil is often left exposed and vulnerable to erosion, which can alter the physical and chemical properties of the soil. This can affect the types of plants and animals that can grow in the area, leading to a new community of organisms that gradually develops over time.
Learn more about secondary succession, here:
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What are the differences between white blood cells and normal eukaryotic cells?
Answer:
White blood cells (WBCs) are specialized to respond to antigen and produce antibodies as well as undergo phagocytosis in response to toxic stimuli.
WBCs are part of immune system and there are five different kinds with specialized features.
In order to make a cell model, it is best to use a muscle cell and a nerve cell or neuron: there are pronounced structural differences and those are present throughout animal kingdom.
Lower animals ( such as insects, worms etc. ) have different immune system, however, they do have typical neuron and a muscle cell/skin cell (fibroblast). Such cell models are likely to be easy, distinct and bring you good grades without going through much complication and confusions of various organ systems and animal mod
Explanation:
7. Which is an example of an organ system?
muscles
lungs
blood vessels
circulatory
Answer:
circulatory
Explanation:
contains the heart, lungs and blood vessels
1. the process by which organisms produce new organisms of the same type ____________________
2. a method of reproduction in which all the genes passed on to the offspring come from a single individual or parent
______________________________
3. a method of reproduction that involves two parents producing offspring that
are genetically different from either parent _________________________
4. an organism that is genetically identical to the organism from which it was produced ________________________
5. the male sex cell __________________
6. a sex cell produced by a female __________________________
7. an egg or sperm cell; a sex cell
8. the cell division process that divides the cell’s nucleus into two, each with a complete set of genetic material from one parent
cell ___________________________
9. the cell division process that results in the production of sex cells (sperm and egg)
________________________________
10. the process that combines a sperm cell and an egg cell _____________________
11. the cell that results from the joining of the egg and sperm
_________________________________
12. the process that transforms developing cells into specialized cells with
different structures and functions
__________________________________
13. the organ of the human female reproductive system that produces an egg cell, the female gamete
____________________________________
14. female reproductive hormone (either one) __________________________
15. female reproductive hormone (either one)
_________________________
16. the organ, in female animals, where the embryo develops into a fetus _________________________________
17. the organ that enables nutrients and oxygen to pass from the mother’s blood to the fetus, and waste products to pass from the fetus to the mother’s blood
________________________________
18. the male reproductive organ, that produces sperm and the hormone testosterone
________________________________
19. a hormone associated with male sexual development and reproduction
________________________________
20. structure in female where fertilization occurs______________________________
Answer:
Sexual reproduction was an early evolutionary innovation after the appearance of eukaryotic cells. The fact that most eukaryotes reproduce sexually is evidence of its evolutionary success. In many animals, it is the only mode of reproduction. And yet, scientists recognize some real disadvantages to sexual reproduction. On the surface, offspring that are genetically identical to the parent may appear to be more advantageous. If the parent organism is successfully occupying a habitat, offspring with the same traits would be similarly successful. There is also the obvious benefit to an organism that can produce offspring by asexual budding, fragmentation, or asexual eggs. These methods of reproduction do not require another organism of the opposite sex. There is no need to expend energy finding or attracting a mate. That energy can be spent on producing more offspring. Indeed, some organisms that lead a solitary lifestyle have retained the ability to reproduce asexually. In addition, asexual populations only have female individuals, so every individual is capable of reproduction. In contrast, the males in sexual populations (half the population) are not producing offspring themselves. Because of this, an asexual population can grow twice as fast as a sexual population in theory. This means that in competition, the asexual population would have the advantage. All of these advantages to asexual reproduction, which are also disadvantages to sexual reproduction, should mean that the number of species with asexual reproduction should be more common.
However, multicellular organisms that exclusively depend on asexual reproduction are exceedingly rare. Why is sexual reproduction so common? This is one of the important questions in biology and has been the focus of much research from the latter half of the twentieth century until now. A likely explanation is that the variation that sexual reproduction creates among offspring is very important to the survival and reproduction of those offspring. The only source of variation in asexual organisms is mutation. This is the ultimate source of variation in sexual organisms. In addition, those different mutations are continually reshuffled from one generation to the next when different parents combine their unique genomes, and the genes are mixed into different combinations by the process of meiosis. Meiosis is the division of the contents of the nucleus that divides the chromosomes among gametes. Variation is introduced during meiosis, as well as when the gametes combine in fertilization.
Explanation:
By the end of this section, you will be able to:
Explain that variation among offspring is a potential evolutionary advantage resulting from sexual reproduction
Describe the three different life-cycle strategies among sexual multicellular organisms and their commonalities
Understand why you could never create a gamete that would be identical to either of the gametes that made you