Why does DNA need to replicate before cells divide?

Answers

Answer 1

Answer:

Below:

Explanation:

Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.

Answer 2

whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.


Related Questions

Your body's 2nd choice of food group to break down for energy?

Answers

Answer:

protein

Explanation:

because it has many functions andreplaces most nutrients

The main goal of photosynthesis is to produce what?

Answers

Answer:

To spread carbon dioxide and oxygen.

Explanation:

Plants produce carbon dioxide and oxygen. This is called photosynthesis.

is this correct ? ...​

Answers

Answer:

The compression-ventilation ratio for CPR is 15 compressions to 2 ventilations. So the answer here is 4, not 2.

Which of the following statements is TRUE?

Bell's palsy comes on suddenly.
The worst symptoms associated with Bell's palsy occur within 48 hours.
Bell's palsy usually requires no treatment in order to recover.
*All of the above

Answers

Answer:

d. All of the above

Explanation: is correct

Answer: all of the above

Explanation:

state the functions of vitamin d

Answers

Answer:

For maintaining healthy bones

It also helps the intestines to stimulate and absorb calcium

Answer:

Explanation:

Vitamin D is both a nutrient we eat and a hormone our bodies make. It is a fat-soluble vitamin that has long been known to help the body absorb and retain calcium and phosphorus; both are critical for building bone.

NEED HELP NOW PLEASE

Answers

Answer:

"shown on the opposite page"

Explanation:

put that picture too

Fleas and mosquitoes sometimes transmit disease pathogens such as bacteria and viruses from one individual to another. Such agents (fleas and mosquitoes) are called

Answers

Answer:

Insects

Explanation:

Hope this helps you alot

please help asap asap asap

Answers

Answer:

true

Explanation:

because it's helps the sunlight

What does a plant need to create a glucose molecule in photosynthesis?

Choose all correct answers.


carbon dioxide

sunlight

water

oxygen

Answers

Carbon Dioxide, sunlight and water are used when a plant creates a glucose molecule

Answer:

sunlight

water

oxygen

Explanation: cuz i said

where does reduction occur in an electrolytic cell

Answers

Answer:  The Cathode

Explanation:

Reduction always occurs at the cathode, and oxidation always occurs at the anode. Since reduction is the addition of electrons, electrons must travel toward the site of reduction. In an electrolytic cell the negative charge is on the cathode, while the positive charge is on the anode.

i hope this helps :)

Answer:

The Cathode

Explanation:

The microscopic filtering units found in the kidneys that are responsible for urine formation are called

Answers

Answer:

nephrons

Explanation:

there are about one million nephrons in one kidney which are responsible for urine formation

The microscopic filtering units found in the kidneys that are responsible for urine formation are called nephrons, so here the correct option is option a.

Throughout the nephron, various processes such as filtration, reabsorption, and secretion occur to produce urine. Filtration occurs at the glomerulus, where water and small solutes are forced out of the blood into the Bowman's capsule. Reabsorption involves the selective reabsorption of water, ions, and nutrients from the filtrate back into the bloodstream. Secretion involves the active transport of waste products, excess ions, and toxins from the bloodstream into the filtrate. So here, the correct option is option a.

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complete question is below

The microscopic filtering units found in the kidneys that are responsible for urine formation are called

A. nephrons

B. kidney

plzz help

Which describes a promoter?

a. the first part of an operon that regulates where, when, and to what level a gene is
expressed

b. the part of an operon that, if attached by a repressor protein, suppresses the
expression of a gene

c. a cluster of genes that are expressed or repressed as a group

d.an enzyme that helps DNA unzip prior to transcription

Answers

Answer: A

Explanation: email for more help my address is

charlescarey0906(at symbol)g ma il.com

no spaces or caps

Answer:

a :)

Explanation:

When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?.

Answers

i dont know why wont you ask your dad

what is the thickest and longest nerve in the human body

Answers

Answer:

It's your sciatic nerve.

What is the process called when cells break off of an original tumor and create new cancer sites?
OOOO
benign
malignant
metastasis
biopsy

Answers

Answer:

metastasis is your answer fits the description of host sitr to new site

How is the Calvin Cycle different from the light dependent reactions?
A. It requires light
B. It takes place in chloroplasts
C. It takes place in the Stroma
D. It takes place in the thylakoid membrane

Answers

I believe it’s c. It takes place in the stroma
The Calvin cycle takes place in the stroma so the answer is C

Peptides are hydrolyzed into amino acids.

a. True
b. False

Answers

Answer:

"The peptide products are then further hydrolyzed into amino acids via other proteases, and then absorption occurs into the bloodstream. Hence, Trypsin digests proteins into amino acids. So, the correct answer is 'true'"

Explanation:

Bryant Vaughn first worked for United States government as a forensic botanist in 1975, _____ after pollen analysis was first used by Lennart von Post.

Answers

Bryant Vaughn first worked for the USA government as a forensic botanist in 1975, 59 YEARS after pollen analysis was first used by Lennart von Post. L. von Post is considered the father of palynology.

Palynology refers to the discipline that studies plant pollen in both living and fossil forms of life.

Lennart von Post was a naturalist and geologist who is generally regarded as the father of modern palynology.

L. von Post published in 1916 a quantitative analysis of pollen grains entitled “Forest-tree pollen in south-Swedish peat layers”.

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Mrs. W. is 68 years old and lives alone. She moves very slowly and does not respond verbally to what others say. She sometimes mumbles to herself. Her face is expressionless. She seems confused by her surroundings. She is accompanied by her daughter, who is highly observant and an accurate reporter of Mrs. W.’s past medical and psychosocial history. What possible Noncognitive Disorders could Mrs. W have?

Answers

The non-cognitive disturbances that Mrs. W. could have related to some dementia are psychosis, personality change, lack of rhythm, deficit in emotional responses, mental confusion.

It is important that the patient in these conditions is continuously assisted, to avoid situations that put her safety at risk.

An elderly woman like Mrs. W, who already has significant evolution of non-cognitive disorders, must have an effective medical apparatus and a tutor willing to help with care and daily activities.

Ideally, caregivers should develop optimal communication skills for patients with these disorders, such as a calm and gentle tone, provide the individual with a peaceful environment without too much noise or other disturbances, as well as being considerate and not neglecting the individual's needs.

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Is DNA replication the same as cell replication? Or are they two different things?

Answers

DNA replication and cell replication both ate different but are connected to each other

in DNA replication the amount of genetic material become double but in cell division a cell divided into two parts and amount of protoplasm and cytoplasm both get half

please help








help help​

Answers

Answer:

m= p+e

Explanation:

6. As the lunar cycle progresses from the full moon to new moon the light will appear to _________.

7. The “growing light” that appears during the first half of the lunar cycle is referred to as __________.

8. The ___________ phase occurs at 21 days into the cycle and shows the left half of the moon illuminated.

9. In a crescent stage __________ than half of the Moon appears illuminated and during a gibbous stage __________ than half appears illuminated.

-I know this is asking for a lot but I really don’t know-
-I need the answers asap!-
-thanks in advance!-

Answers

Answer:

6. As the lunar cycle progresses from the full moon to new moon the light will appear to decrease

7. The “growing light” that appears during the first half of the lunar cycle is referred to as waxing.

8. The third quarter / 7th phase occurs at 21 days into the cycle and shows the left half of the moon illuminated.

9. In a crescent stage less than half of the Moon appears illuminated and during a gibbous stage more than half appears illuminated.

Explanation:

The "growing light" that appears during the first half of the lunar cycle is referred to as the "waxing phase" ,the first quarter phase occurs 21 days into the cycle and in the crescent stage, less than half of the moon appears illuminated.

What is the significance of the lunar cycle?

It has much significance and is related to the moon, which is a natural navigation aid for mariners, providing light at night and it has an impact on the life cycles of animals and plants, including breeding and migration, and the gravitational pull of the moon and the sun causes the tides to rise and fall.

Hence, the "growing light" that appears during the first half of the lunar cycle is referred to as the "waxing phase" ,the first quarter phase occurs 21 days into the cycle and in the crescent stage, less than half of the moon appears illuminated.

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Plzzzzz help meeeee plzzzzzzz

Answers

Answer:

59 is false and 60 and true

Explanation: I think it is right sorry if it is wrong. I hope this helps

Answer: 1) True 2) True

Explanation:

Please help a girl out !

Answers

Answer:

3=??

5=B

6=C

7=J

8=E

9=G

Explanation:

❤️ sorry I don't know 3 number

Osteoclasts are responsible for which of the following processes?

Osteogenesis
*Resorption
Ossification
Oseogenesis

Answers

Answer:

b. Resorption

Explanation: is correct

What type of shock occurs when bacterial toxins trigger vasodilation and increase capillary permeability

Answers

Septic shock occurs when bacterial toxins trigger vasodilation and increase capillary permeability.

Vasodilation occurs during inflammatory processes thereby leading to an increase in blood flow. Septic shock cause the release of numerous vasodilatory chemicals thereby leading to lethal hypotension.

Septic shock is caused by changes in hemodynamic profile as a result of endothelial dysfunction with increased capillary permeability thereby leading to hypotension.

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Independent assortment of chromosomes is a result of which of the following processes?

a. the diverse combination of alleles that may be found within any given chromosome
b. the random way each pair of homologous chromosomes lines up at the metaphase plate during meiosis I
c. the random combinations of eggs and sperm during fertilization
d. the random distribution of the sister chromatids to the two daughter cells during anaphase II

Answers

Answer:

B

Explanation:

Independent assortment of chromosomes refers to the random way each pair of homologous chromosomes lines up at the metaphase plate during meiosis I.

What is independent assortment of chromosomes?

The independent assortment of chromosomes is one of the Mendel's laws of genetics.

Independent assortment of chromosomes refers to the random way each pair of homologous chromosomes lines up at the metaphase plate during meiosis I.

Therefore, independent assortment of chromosomes results in traits and characters beings inherited independently from each other.

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Determine the phenotypic ratios of the offspring. 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constricted 9 green-inflated : 3 green-constricted : 3 yellow-inflated : 1 yellow-constricted 9 green-constricted : 3 green-inflated : 3 yellow-constricted : 1 yellow-inflated 9 yellow-constricted : 3 yellow-inflated : 3 green-constricted : 1 green-inflated

Answers

From a cross between dihybrid individuals, whose diallelic genes code for one trait each, expressing complete dominance, the phenotypic ratio is B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated :1 yellow-constricted.

-------------------------------

Since I do not have the cross, I will assume the cross involves two dihybrid individuals by looking at the options.

So, let us picture the situation,

Two diallelic genes code for one trait each, color and inflated/constricted pods.G allele is the dominant and codes for green podsg allele is recessive and codes for yellow podsI is the dominant allele and codes for inflated podsi is recessive and codes for constricted podsThese genes are not linked

1st Cross)   Two h0m0zyg0us individuals

Parental)  GGII     x     ggii

F1) 100% GgIi

2nd Cross) Selfcross between F1 individuals

Parentals)   GgIi    x    GgIi

Gametes) GI, Gi, gI, gi

                GI, Gi, gI, gi

Punnett square)     GI        Gi        gI       gi

                     GI      GGII     GGIi   GgII   GgIi

                     Gi      GGIi      GGii   GgIi   Ggii

                      gI      GgII     GgIi    ggII    ggIi

                      gi      GgIi     Ggii    ggIi     ggii

F2)    Genotype

1/16 GGII2/16 GGIi1/16 GGii2/16 GgII4/16 GgIi2/16 Ggii1/16 ggII2/16 ggIi1/16 ggii

   

       Phenotype

9/16 G-I- ⇒ Green and Inflated3/16 G-ii ⇒ Green and constricted3/16 ggI- ⇒ Yellow and inflated1/16 ggii ⇒ Yellow and constricted

Phenotypic ratio 9:3:3:1

Options

A) 9 yellow-inflated : 3 yellow-constricted : 3 green-inflated: 1 green-constricted ⇒ NOT CORRECT

B) 9 green-inflated : 3 green-constricted : 3 yellow-inflated : 1 yellow-constricted ⇒ CORRECT

C) 9 green-constricted : 3 green-inflated : 3 yellow-constricted : 1 yellow-inflated ⇒ NOT CORRECT

D) 9 yellow-constricted : 3 yellow-inflated : 3 green-constricted : 1 green-inflated ⇒ NOT CORRECT            

-----------------------------

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What makes a plant a producer?

Answers

Answer:

iii

Explanation:

Answer:

Plants supply food for the ecosystem

Explanation:

The green plants can accommodate their food for themselvesThey provide the foods made by them to the whole ecosystem.

So theya re producers

A scientist performs a series of mutation screens to look for mutations that reduce ATP production. One of the mutants, compared to a wild-type cell, has reduced levels of ATP and NADH and increased levels of FAD and pyruvate. Which hypothesis best fits these observations?

Answers

The hypothesis that best fits the observation that one of the mutants has reduced levels of ATP and NADH and increased levels of FAD and pyruvate is that the mutation is disrupting the citric acid cycle (Option 3).

What is the citric acid cycle?

The citric acid cycle, also known as the Krebs cycle, is the second step of cellular respiration which is required to generate ATP through the oxidation of pyruvate.

The reduced form of Nicotinamide adenine dinucleotide (NADH) produced during the citric acid cycle is then used in oxidative phosphorylation (the third step of cellular respiration) in order to generate more ATP.

Therefore, with this data, we can see that the citric acid cycle generates the reduced form of Nicotinamide adenine dinucleotide (NADH) and thus increases the production of ATP, thereby a mutation in an enzyme that works in this pathway may also hamper the proportion of ATP.

Complete question:

A scientist performs a series of mutation screens to look for mutations that reduce ATP production. One of the mutants, compared to a wild-type cell, has reduced levels of ATP and NADH and increased levels of FAD and pyruvate. Which hypothesis best fits these observations?

The mutation is disrupting glycolysis.

The mutation is disrupting fermentation.

The mutation is disrupting the citric acid cycle.

The mutation is disrupting the electron transport chain.

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Answer:

For the people to lazy to read that. The answer is c.

Explanation:

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