3. Why is it necessary for the cell to grow and duplicate its DNA before the start of meiosis?

Answers

Answer 1

Answer:

Since the cell is dividing it needs two copies of it's DNA. One is kept by the parent cell and the other is passed to the daughter cell..... So this process of duplicating DNA is very important, because the daugher DNA cell will likley die.

Explanation:


Related Questions

please help, it’s due at 3:00 :)

Answers

Answer:Gene

Explanation:

The answer is A. gene :)

Tsunamis are the result of

Answers

Answer:

Powerful underwater earthquakes.

Explanation:

Answer:

A tsunami is a series of large waves generated by an abrupt movement on the ocean floor that can result from an earthquake, an underwater landslide, a volcanic eruption or - very rarely - a large meteorite strike. However, powerful undersea earthquakes are responsible for most tsunamis

Explanation:

The picture shows soil that has become compacted.
What is the most likely direct result when soil becomes compacted by human
use?

Answers

The ground will become lower cause erosion and lots of other stuff

Answer:D

Explanation:

The saliva in your mouth contains amylase. Amylase is an enzyme that breaks down starch and glycogen into glucose, simple sugars.

The sequence of amino acids in the amylase is an example of which level of protein structure

Answers

primary, since primary structure simply deals with the sequence of amino acids in a protein

During the Precambrian, Earth's first atmosphere is theorized to have been composed of a poisonous mixture of helium and hydrogen gases. When Earth's crust began to cool, the makeup of the atmosphere changed.

Answers

Answer:

Yes.

Explanation:

Yes, early Earth's atmosphere was formed from the poisonous mixture of helium and hydrogen gases. But with the passage of time when Earth's crust began to cool, the composition of the atmosphere changed and carbondioxide and water concentration in the atmosphere increases due to carbondioxide gas emission from the volcanoes and evaporation of water from water bodies present on the surface of earth.

santosh khanal bacteriological profile in urinary tract infection and their antibiotic susceptibility pattern

Answers

In order to ascertain the prevalence and pattern of antibiotic susceptibility of uropathogens among patients at Bharatpur Hospital, this study was carried out.

An increased prevalence of antibiotic resistance among UTI patients signals the need for ongoing surveillance to ensure effective infection control. It can be advised that women, in particular, be aware of proper hygiene practises and use antibiotics sparingly when necessary.

What is Urinary tract infection ?

Urine that seems to be hazy. Having urine that is crimson, bright pink, or coke-colored indicates that there is blood in the urine. urine that smells strongly. Women who experience pelvic pain typically experience it in the centre of the pelvis and near the pubic bone.

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60 POINTS!! PLEASE HELP!!When the level of blood testosterone has increased past its set point, a negative feedback signal will be sent to the hypothalamus.


Based on the diagram, what will be the result of this signal?

A) The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will decrease.

B)The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, follicle-stimulating hormone will no longer be produced and testosterone levels will start to decrease.

C)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will increase.

D)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will be inhibited and testosterone levels will decrease.

Answers

Answer:

c

Explanation:

the answer should be b, i’m sorry if it’s wrong

mark me brainliest if the answer is correct, thank you in advance :)

_________ ( spores / fragments ) are microscopic single- celled or several - celled reproductive bodies that are mostly spherical in shape.

Answers

Answer:

Spores

Explanation:

please mark me brainliest and 5 star

when do members of each species compete regularly for resources

Answers

Well because they need to survive. And whoever gets the most food will grow the biggest and produce the most offspring. This even happens between inter species like ants, an example of this is when the red imported fire and caused the near extinction of the native argentine ant in the United States

TRUE or FALSE: There is more available oxygen in the water vs the air?

Answers

False if there was oxygen in the water we would be able to breathe there
False, there is more oxygen in air

How many times do cells undergo Mitosis in order to become a gamete?

Answers

Answer:

two

Explanation:

When a cell divides by way of mitosis, it produces two clones of itself, each with the same number of chromosomes. When a cell divides by way of meiosis, it produces four cells, called gametes.

Answer:

Cells do not undergo mitosis to become gametes although Somatic Cells go through Mieosis 1 & 2 to become gametes.

Explanation:

Specifically a somatic cell is split twice where on parent cell ends up into 4 daughter cells through Meiosis 1 and 2

Mitosis produces the exact same cell so if you did mitosis on a somatic cell it would never happen. But if you did it on a cell already a gamete it would only take one division

Plss answer I need it. Thank you ​

Answers

please see the attached images. Hope this helps you.

Please answer quickly!

Answers

Answer:

BB

Explanation:

Sorry if I'm wrong Lol..

which is a chamber that receives blood into the heart and drives it into a vebtriclr​

Answers

Answer:

Atrium,

Explanation: in vertebrates and the higher invertebrates, heart chamber that receives blood into the heart and drives it into a ventricle, or chamber, for pumping blood away from the heart.

Answer:

The Atrium receives blood into the heart and drives it into a ventricle.

Explanation:

I hope this helps! :)

Dose anyone know if I did this right??

Answers

Answer:

yea, I got that on my document test I got it wrong but the correction was the exact how you did it, good job

In a circuit diagram, what does this symbol represent?
a resistor
a light bulb
a battery
a switch

Answers

Answer:

D

Explanation:

Question: are we all edge users on this website? lol

In a circuit diagram, the given image represents the symbol of an electrical switch. Thus, the correct option is D.

What is a Circuit diagram?

A circuit diagram may be defined as a graphical representation of an electrical circuit. It consists of a bulb, battery, switch, etc. along with the utilization of a voltmeter, ammeter, etc. It overall represents the flow of electric current within it.

A circuit diagram is also known as an electrical diagram, elementary diagram, or electronic schematic. It is a simplified graphical representation of an electrical circuit. It expresses the relative positions of all the components and their connections to one another. It is often utilized in order to visually represent the circuit to an electrician.

Therefore, in a circuit diagram, the given image represents the symbol of an electrical switch. Thus, the correct option is D.

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Your question seems incomplete. The most probable complete question is as follows:

In a circuit diagram, what does this symbol represent in the image given below?

a resistora light bulba batterya switch

The genes for the traits that mendel worked with are either all located on different chromosomes or behave as if they were. How did this help mendel recognize the principle of independent assortment?.

Answers

Mendel recognized the principle of independent assortment by working with the genes located on different chromosomes as otherwise, his dihybrid crosses would not have produced a 9:3:3:1 ratio for F2 phenotypes.  

Mendel's law of independent assortment states that during a dihybrid cross, the assortment of each pair of traits is independent of the other. This means that, during gamete formation, one pair of traits is separated from another pair of traits independently. The genes for the traits that Mendel worked upon were located on different chromosomes or behaved as if they were. This feature helped Mendel to conclude with his finding as a law of independent assortment.

Gregor Mendel performed dihybrid crosses between organisms having two different traits: seed color and seed shape. One parent was homozygous dominant (YYRR: Yellow round) and the other was homozygous recessive (year: green wrinkled) for two different traits. He produced a  heterozygous dominant trait ( YyRr: Round yellow) in the F1 progeny. When F1 progeny was self-crossed, he observed that the phenotypic ratio was 9:3:3:1. This means that the F2 progeny resulted in four different combinations of seeds: wrinkled yellow, round yellow, wrinkled green, and wrinkled yellow seeds.

With the genes located on different chromosomes, it was made easier for Mendel to observe the phenotypes in F2 progeny.

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Analyze “Diagram B." Of the four answers provided, which answer clearly interprets this graph?


A. The wavelengths of sunlight between 100nm and 700mm aie the wavolengths thit are absorted by chirophyll and that drive photosynthesis

B. The wavelengths of sunlight between 400nm and 700nm are thin wavelengiis at a abnarted by the mitochondria and that drive photosynthesis

C. The wavelengths of sunlight between 400nm and 700mm aro thi wavolungths that are absorted Iy the mitochendria and that drive cellular respiration

D. The wavelengthN of night between 400nim and 700nm are the wavelengths that are lnortet by chlorophyll and that drive cellular respiration​

Answers

The answer for this would be A because

As per diagram B of the four answers the wavelength. The wavelength are given in the visible bands and range form 400 to 700 nm. As per the absorption efficiency the band B has larger capacity than the band A.

Hence the wavelength of sunlight between the 400nm and the 7000nm ae the wavelengths that are absorbed by the and mitochondria that drive the process of cellular respiration.

Hence  option C is correct.

Learn more about the answers provided, which answer.

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What do a banana and a chicken have in common

Answers

Answer:

They are both editable

Explanation:

They are both food, and both good for you

What is the nutrient used to petri dishes to grow bacteria?​

Answers

Sterile powdered agar with nutrients can be mixed with water, heated and then poured into empty petri plates or ready-to-use dishes can be purchased. The undigestible agar is a gelatin-like substance with a semi solid surface on which the bacteria can grow while they consume the added nutrients (like sheep's blood).

why are fish cold-blooded??? and why animals are warm-blooded

Answers

Answer:

Just like reptiles and amphibians.

Explanation:

They get their body temperature from the water that they are in.

Why are dry land areas not just waterways and wetlands included in a watershed?

Answers

Answer:

water is everywhere including dry spots

i need to know what lights to mix together to get dark gray????

Answers

Answer:

A pure gray is a combination of white and black. However, you can get a grayish-brown shade by mixing red, yellow, and blue. Use more blue to get a cooler “color gray” or more red if you want a warmer color. Hope this is what your looking for.

Explanation:

Brainliest please?

Answer:

A pure gray is a combination of white and black. Add more black than white for it to be dark gray.

Explanation:

Which are segments of DNA that code for specific traits? genes chromosomes proteins codons

Answers

Answer:

genes

Explanation:

Genes are linearly distributed parts of chromosomal DNA.

A gene is a physical and functional unit of inheritance, which transmits a hereditary message from generation to generation, and makes up the entire body of DNA needed to synthesize a single protein or a single RNA molecule.

Genes are strung along chromosomes

Answer:

genes

Explanation:

Give an example of a single trait that is affected by more than one gene.

Answers

Answer:

Sometimes a single gene may affect more than one trait. This is called pleiotropy. An example is the gene that codes for the main protein in collagen, a substance that helps form bones. The gene for this protein also affects the ears and eyes.

Explanation:

What is an example of "facilitated diffusion"? PLEASE HELP QUICK!!

A. a special transport protein speeds up the movement of glucose into a cell

B. oxygen diffuses across a cell membrane

C. a drop of food coloring spreads out in water

D. water moves out of a wilted plant

Answers

Answer:

B I guess is the answer for the question

i think the answer is b

Leaves of green plants contain openings known as stomata. These are opened and closed by specialized cells that allow gases to be exchanged between the leaf and the outside environment. Which phrase best represents the flow of gases into and out of a leaf through stomata on a sunny day?

a oxygen moves in; nitrogen moves out
b carbon dioxide moves in; oxygen moves out
c carbon dioxide and oxygen move in; ozone moves out
d water vapor and ozone move in; carbon dioxide moves out

Answers

Answer:

b carbon dioxide moves in; oxygen moves out.

Explanation:

The green leaves of the plant convert the available solar energy into chemical energy by the process of photosynthesis which s responsible for giving green pigment to the leaves. The stomata present on the leaves are used for exchanging gases, they give out oxygen and take or absorb carbon gas. As carbon dioxide is exalted by animals and is taken by plants.

Which best describes how mRNA is produced in a cell?
A. mRNA is made up by lining up RNA nucleotides, using DNA as a template.
B. mRNA is made by duplicating RNA found in the nucleus.
C. mRNA is made by breaking apart DNA and reusing the pieces.
D. mRNA is made by DNA, using RNA nucleotides as a template.

Answers

Answer:

d

Explanation:

gated ion channels gated ion channels are found only on vesicles. open and close in response to a stimulus. move molecules against an electrochemical gradient. require atp hydrolysis.

Answers

Gated ion channels are open and close in response to a stimulus.

What is a stimulus?

A stimulus in physiology is a perceptible alteration in the physical or chemical composition of an organism's internal or external environment. Sensitivity refers to an organism's or organ's capacity to recognize external stimuli and respond appropriately (excitability). As with touch receptors in the skin or light receptors in the eyes, sensory receptors can pick up information from both within and outside the body. Chemoreceptors and mechanoreceptors are examples of internal sensory receptors. A stimulus can trigger a response via stimulus transduction when it is recognized by a sensory receptor.

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define the term gene mutation​

Answers

Answer:

gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes

Explanation:

need thanks and make me brainiest if it helps you

Answer:

Gene mutation is a genetic change in base sequences of DNA.

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