Answers
Answer:
The correct answer is D.
Related Questions
Brad was provided with a piece of bread and egg yolk. He wants to know which component is present in the given food. Suggest him the scientific procedures to find the right component present in each food item.
Answers
Answer: Please see explanation column
Explanation:
Sample provided to Brad = a piece of bread and egg yolk
1. We know that Bread is a carbohydrate containing starch
To investigate the presence of starch/ Carbohydrate in Bread
Materials: Bunsen burner,test tubes, food product -Bread,iodine solution
Method
1. Place a sample of bread into the test tube.
2. Place a few drops of iodine solution on the bread
3. Take observations.
4. Wait a few more minutes and note any other changes.
Observations
On addition of iodine to the bread , if we notice a blue-black coloration, we will conclude that the right component found in bread is starch /carbohydrate
The above procedure can also be confirmed using
-Molisch’s reagent–which gives us a purple or violet color ring on addition to the bread
- Fehling’s reagent –which gives a Red precipitate to indicate the presence of in the bread
-Benedict’s reagent –which gives Red precipitate to indicate the presence of carbohydrates in the bread.
-Tollen’s reagent – which gives us Silver mirror to confirm the presence of carbohydrate in the bread.
2. We know that egg yolk contains protein,
To investigate the presence of Protein in egg yolk using biuret test
Materials: Bunsen burner,test tube, food product -egg yolk , Aqueous copper sulfate solution
Method
1. Place a sample of egg yolk into the test tube.
2. Place a few drops of Aqueous copper sulfate solution on the sample of egg yolk
3. Note observations.
4. Wait a while and note any other changes.
Observations
On addition of Aqueous copper sulfate to the egg yolk , if we notice a violet coloration,we will conclude that the right component found in egg yolk is protein
The above procedure can also be confirmed using
Xanthoproteic test – which on addition of Nitric acid to the egg yolk gives a Yellow coloration
Millions test – which on addition of Mercuric sulfate in the presence of sodium nitrite and sulfuric acid to the sample of egg yolk gives Brick red color solution confirms the presence of proteins.
Ninhydrin test – which on addition of Pyridine solution of ninhydrin to the sample of egg yolk gives Violet color solution confirms the presence of proteins.
If you took DNA samples from two strangers on a street, how similar would
their DNA be?
A. 100% the same
B. 95.5% the same
C. 99.9% the same
D. 90.0% the same
Answers
If one took DNA samples from two strangers on a street, the two DNA samples will be 99.9% the same (option C).
What is DNA?DNA is the part of a living organism that carries or stores genetic information.
The DNA molecule is made up of four nucleotide bases namely;
AdenineGuanineCytosineThymineHowever, the DNA of every living organism is the same with the difference lying in the arrangement of the nucleotide sequence.
Therefore, if one took DNA samples from two strangers on a street, the two DNA samples will be 99.9% the same.
The 0.1% difference is attributed to the mutations that might have occured in the genome.
Learn more about DNA at: https://brainly.com/question/316480
#SPJ1
What keeps earths temperature suitable for life
Answers
Answer: The Earth has a suitable climate for the existence of all forms of life because of moderate amount of carbon dioxide, which is the driving factor for the survival of life forms. The temperature of planet Mercury ranges from 200°c below freezing to 375°c above. Hopes this helps. Can u pls pls pls mark me as brainliest
Explanation:
What is Endosymbiotic Theory ?
How does it explain Eukaryotic Cells?
What evidence do scientists have to support this theory ?
Based on the video of the amoeba sisters.
Answers
Answer:
1.States that organelles such as chloroplasts and mitochondria were once free-living prokaryotes which eventually lived symbiotically within larger cells, forming modern day eukaryotes.
2.Eukaryote, any cell or organism that possesses a clearly defined nucleus. The eukaryotic cell has a nuclear membrane that surrounds the nucleus, in which the well-defined chromosomes (bodies containing the hereditary material) are located.
explain the difference between mechanical weathering and chemical weathering.
Answers
Answer:
below
Explanation:
Mechanical weathering breaks rocks into smaller pieces without changing their composition. Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.
What is true of the waste generated by nuclear power?
A: increases greenhouse effect
B: causes air pollution
C: remains hazardous for a long time
D: creates acid rain
(this is science btw)
Answers
Answer:
c
Explanation:
give an example of how an organism can use surface tension?
Answers
Surface tension of water helps creatures(mostly of insecta class such as water striders) to walk on water. ... it also helps water to move up the xylem tissue of higher plants without breaking up
A molecule that can mix with water and a store for energy in the body
Answers
Answer:
Glucose
Explanation:
Glucose is a source of energy and it is stored in the body (in the form of glycogen) and it can also dissolve in water
Answer:
liver is the answer plllllllll
All the statements are true of herbivores except that they are
often prey
not producers
primary consumers
sometimes predators
Answers
The "Sometimes predators" one.
Herbivores are plant eaters so that don't eat meat.
They can be prey like a deer to a wolf.
They produce alright baby deer.
They do consume plants.
Answer:
The answer is "Sometimes preadators".
Explanation:
The processes involved with reproduction and nurturing a growing zygote
require energy use beyond normal maintenance. What is the best way certain
organisms reduce the energy costs of reproduction?
A. The parents each take turns nurturing the offspring.
B. They reproduce asexually.
C. They have multiple offspring in one pregnancy.
D. They reduce their gestation period.
Answers
Answer:
B. They reproduce asexually.
Explanation:
Asexual reproduction often known as abiogenetic multiplication requires just one parent organism and results in hereditary identical progeny (similar to a new copy). Since there is no blending of genetic data required and organisms don't have to invest energy finding a mate, populaces can increment quickly because of asexual generation. Thus, with the guide of asexual generation, the energy needed in the process associated with multiplication and nurturing is diminished contrasted with sexual reproduction.
Describe two specific ways you plan to keep your heart healthy? please make it in your own words. I will give brainliest.
Answers
Answer:
1. to eat healthy food and drink lot's of water.
2. quit smoking and stay away from second hand smoke.
Explanation:
10+6h=34 what does h equal?
Answers
Answer: h = 2.125
Explanation:
Simplifying
10h + 6h = 34
Combine like terms: 10h + 6h = 16h
16h = 34
Solving
16h = 34
Solving for variable 'h'.
Move all terms containing h to the left, all other terms to the right.
Divide each side by '16'.
h = 2.125
Simplifying
h = 2.125Answer:
The answer is h = 4.
Explanation:
1) Subtract 10 from both sides.
[tex]6h = 34 - 10[/tex]
2) Simplify 34 - 10 to 24.
[tex]6h = 24[/tex]
3) Divide both sides by 6.
[tex]h = \frac{24}{6} [/tex]
4) Simplify 24/6 to 4.
[tex]h = 4[/tex]
therefor, the answer is h = 4.
Help!!!!!! This is a review NOT a test!!!! Marking brainliest!!!!
Answers
answer:
i believe you are correct
good luck :)
hopefully, this helps
have a great day !!
It's a matching question. I will give brainliest.
Answers
Answer:
1. B
2. C
3. D
4. A
Hope this helps
1. Cerebrum : b. the thinking part of the brain
2. Cerebellum : c. controls balance, movement, and coordination
3. Brain stem : d. keeps you breathing, digest food, and blood circulating
4. Spinal cord : a. a bundle of nerves that sends messages to your brain
HOPE IT HELPS
PLEASE MARK ME BRAINLIEST
✿(◕ᴗ◕)✿
Individual organisms evolve over time.
true
or
falce
Answers
Answer:
False
Explanation:
Individual organisms don't evolve over time. This is because evolution is passed down to offspring over time.
Which is the best definition of weathering?
settling of Earth’s materials when water slows downb.swelling Earth’s materials as they soak up waterc.breaking up of rocks from wind, water, plants, or animalsd.transport of Earth’s materials by wind, water, or ice
Answers
Answer:
Breaking up of rocks from wind , water, plants or animals
Explanation:
this is called weathering
hope it helps
HELP PLEASE OTS DUE LIKE IN AN HOUR!!!!!!!!!!
Answers
the first one's answer is : Nickel
and the second part's answer is : Green Kryptonite
When S strain bacteria were killed by being heated to 60C, then mixed with live strain bacteria and injected into mice, a greater % of
mice died than when the strain bacteria were heated to 100C. Can you propose an explanation for these observations?
Answers
Answer:
Due to live strain bacteria.
Explanation:
The first method cause more damage to the mice as compared to the second method because in the first method the killed bacteria were mixed with the live strain bacteria. This live strain bacteria causes diseases in the mice and eventually killed the mice while on the other hand, all the bacteria were killed due to very high temperature so that's why first method causes more damage than second one.
PLZ HELP I REALLY NEED HELP
Which of the following genotypes for human blood type shows alleles that are codominant?
A. AO (or IAi)
B. AB (or I4IB)
C. BB (or IBIB)
D. AA (or IAIA)
Answers
Answer:
B
Explanation:
The IA and IB alleles are codominant, and the i allele is recessive.
Phenylketonuria (PKU) is a disease that is caused by the mutation of a single gene. The mutation can cause several problems, such as mental ret*rdation, lightly colored hair and skin, and lower IQ.
The disease phenylketonuria is an example of how
A.
a single gene can only affect a single trait.
B.
multiple genes can affect a single trait.
C.
a single gene can affect multiple traits.
D.
all of these
Answers
Answer:
C ..A single affect multi traits
Answer:
C ..A single affect multi traits
Explanation:
Type of democracy where citizens elect leaders to represent them in government dictatorship representative democracy oligarchy anarchy
Answers
Answer:
representative democracy
Explanation:
Democracy can be defined as a government of the people, by the people and for the people.
There are two (2) main types of democracy and these include;
I. Representative democracy: it's also known as indirect democracy and can be defined as a form of government which typically involves the process of having the citizens of a particular country vote to elect representatives (political leaders) to enact laws, create policies and make decisions on their behalf.
Hence, representative democracy is a type of democracy where citizens elect leaders to represent them in government.
II. Direct democracy: it can be defined as a process which typically involves the candidates voting for their preferred choice. Thus, their choices are reflected directly on the subject matter.
Generally, the type of government in which legislators such as senators or house of representative members are found is known as a democracy and they are saddled with the responsibility of enacting or making laws.
The Canadian lynx and the snowshoe hare have a predator-prey relationship. You will use two sets of population data and present them in a single graph.
Using the second picture below,label the x-axis ‘‘Year of Study’’.Label the x-axis with data listed in the first picture.(pls make sure that the grid your using is same as picture two below)
Based on the sizes of the numbers for each population, create a scale on the two separate y-axes. The snowshoe hare population ranges in size from 5000 to 95000. Label the y-axis on the left side of the x-axis as “Hare population (in thousands)." Number this y-axis from 0 to 100, in intervals of 10. The lynx population ranges in size from 500 to 6000. Label the y-axis on the right side of the x-axis as "Lynx population (in thousands)." Number this y-axis from 0 to 10, in intervals of 1.
Construct a line graph using the data from the first picture below.Use a different coloured line for each population.
Give your graph a title.Create a legend for your graph so it is easy to read.
Answers
Answer:
Here you go, mate. Good luck.
Explanation:
When a warm front is approaching, what happens?
A. advancing cold air pushes up and over retreating warm air causing warm temperatures and mild rain
B. advancing warm air pushes up and over retreating cold air causing warm temperatures and mild rain
Answers
Answer:
The air mass behind a warm front is likely to be warmer and more moist than the one before the front. If a warm front is approaching, light rain or light winter precipitation is possible before and as the front passes. Behind the front, expect clearing skies, warmer temperatures and higher relative humdities.
Explanation:
(︶^︶)
.
In which of the following scenarios is chemical energy is transformed into thermal energy?
A squirrel uses the energy in seeds to build structures in its body
A tree captures sunlight to produce the sugars it uses for food
A fish is able to swim using the energy it gets from eating plants
A lion’s temperature increases as it uses the energy it gets from its prey
Answers
Answer:
A.
Explanation:
Hummingbirds drink nectar from flowers. Which beak shape would BEST help a hummingbird survive in a place where the flowers are shaped as shown in the picture?
THIS IS HISTORY BTW
Answers
Answer:
A
Explanation:
the beak is long and curved so the A beak would be perfect (give BRAINLEST please)
Answer:
The best answer would be A.
Explanation:
Answer A. is the best answer because the beak is longer and curved easier for drinking.
Franklin, Watson, and Crick's model of DNA shows a double helical structure where two strands of
DNA run antiparallel to each other. How does this structure cause the number of purines to equal
the number of pyrimidines as observed by Chargaff?
If adenine is on one strand, guanine must be on the other strand.
If thymine is on one strand, cytosine must be on the other strand.
If adenine is on one strand, thymine must be on the other strand.
If adenine is on one strand, cytosine must be on the other strand.
Pregunta 3
5 pts
Answers
Answer:
If Adenine is on one strand, thymine must be on the other strand.
Explanation:
(Thymine + Adenine) (TA) (AT)
(Cytosine + Guanine) (CG) (GC)
A small group of deer are forced to leave the herd in search of a new habitat with more food. If the allele frequencies of the small group is identical to that of the large population, which of the following statements apply?
Read this question carefully!
1Points
A
Genetic drift has not occurred.
B
The bottleneck effect has happened.
C
The two groups will become different species.
D
The genetic variation of each group will be altered.
Answers
Answer:
the genetic varation of each group will be altered
In the case when the allele frequencies of the small group should be same to the large population so here the genetic variation for each group should be changed.
What is genetic variation?It is the variation that shows the presenting of the differences with respect to the sequence of genes lies between the individual organism with respect to the species. Since the allele frequencies of the small group should be same to the large population so here the genetic variation for each group should be changed.
Learn more about allele here: https://brainly.com/question/18999457
Were invertebrates more common? Did most organisms live on land or in the sea?
Answers
Answer:
Yes, invertebrates are common than vertebrates. Most organisms started off in the sea, then adapted to live on land.
Explanation:
In the past, the first animals were mostly invertebrates and lived in the water for a certain amount of time. Then, they developed the right body parts to be able to live on the land.
Answer:
invertebrates are animals with no backbone.
In pea plants the trait for tall height is dominant over the trait for dwarf height. Which letter should be used to represent the genotype for plant height?
D
F
L
T
Answers
Answer:
The correct answer is - T.
Explanation:
Normally, the representation of the trait in the genotype of inheritance pattern is the first letter of the dominant character of the particular trait. In this case, the trait of the height of the pea plant is tall and dwarf.
Tall plants are dominant over the dwarf plant, therefore, the letter T would be used to represent the genotype for the height of pea plant, the small letter of the particular letter would be used to represent the alternate allele of the trait.
Answer:
T :) ️^m^
Explanation:
Which organelles make up animal cells? pls i have an assignment in 1 hr
Answers
Answer:
Organelles in animal cells include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, vesicles, and vacuoles
Explanation: