Answer:
The molecule is a protein
Explanation:
When the molecule was tested with benedict's solution and a blue color was formed, that actually meant there was no colour change because the colour of benedict's solution is blue. Benedict's solution is used to test for the presence of reducing sugar, which changes it's colour to green, orange, yellow or even red; the fact that there was no colour change shows the molecule is not a reducing sugar.
Yellow colour when tested with IKI (Iodine-potassium iodide) also shows no colour change. IKI reagent is used to determine the presence of starch, which gives off a dark-blue colour if starch is present. Hence, absence of this dark-blue colour or observation of a yellow/orange colour shows the molecules is not starch.
Biuret reagent is used to test for peptide bonds in a molecule. In the presence of a peptide bond, the biuret reagent changes colour from blue to violet. The amino acids in proteins are held together by peptide bond, hence the biuret colour change shows that the biomolecule is a protein.
In the thylakoid membranes, what is the main role of the antenna pigment molecules?
a) split water and release oxygen to the reaction-center chlorophyll
b) harvest photons and transfer light energy to the reaction-center chlorophyll
c) synthesize ATP from ADP and Pi
d) concentrate photons within the stroma
Answer: Option B.
harvest photons and transfer light energy to the reaction-center chlorophyll
Explanation:
In the thylakoid membranes,the main role of the antenna pigment molecules is harvest photons and transfer light energy to the reaction-center chlorophyll because the photon of light move until it get to a molecule in the chlorophyll. When it reaches the molecule, it causes an excitation of electrons in the chlorophyll. The energy then present allow it to break free from the chlorophyll atom, which indicate chlorophyll donating an electron and the energy that is absorbed is then converted to heat.
What happens to hydrogen bonds when water turns to ice?
Answer:
at temperatures low enough to turn off the disruptive effects of thermal motions, water freezes into ice in which the hydrogen bonds form a rigid and stable network.
Explanation:
Notice that the hydrogen bond (shown by the dashed green line) is somewhat longer than the covalent O—H bond.
2. How does the development of a nervous system and sense organs relate to increasing complexity of multicellular animals?
The development of nervous system and sense organs in multicellular organisms has led to evolution of species in a more complex manner.
Complexity of multicellular organisms• The development of nervous system and sense organs has permitted for a greater level of perception and better equipped organisms.
• It has permitted the organisms to collect resources, react to their surroundings, and take advantage of their surroundings.
• This has resulted in the organisms to survive longer and accommodate into bigger types of body.
• Such amendments has thus permitted organisms to become more complex and move up the food chain.
Thus, the development of nervous system and sense organs is associated with increasing complexity of multicellular animals.
Find out more information about organisms complexity here:
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unique physical features of pigeon
Answer:
There are many unique physical features that pigeons have.
Explanation:
Pigeons, according to studies, are surprisingly complex creatures. They have passed the "mirror test"(self recognition), can recognize others, and can recognize every letter of the human alphabet.
There are also incredible physical features.
Plumage is one of these. Their plumage varies, and is unique to the type of pigeon they are. Not only this, but they have the ability to walk, while most other birds hop about.
Something absolutely extraordinary about them is that they have a gland in their throat. That gland actually secretes milk for their offspring, so they have adequate nutrition to grow and develop.
Hope this helps.
What is a real-life example of genetic drift?
A real-life example of genetic drift - The Afrikaner (Dutch) population
Genetic driftan unpredictable change in the gene poolit usually limits diversity as some alleles are either eliminated or expressed too much.there are two forms of genetic drift founder effect and bottleneck effectA real-life example of genetic drift is -The Afrikaner (Dutch) population that settled in South Africa had an abnormally high count of Huntington's Diseaseit is due to the first Dutch settlers had a high frequency of the gene than the original populationLearn more:
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describe the impact of technology on the environment today
(MICROSCOPES) "If the total magnification is 40x. The eyepiece is 10x, what is the power of the objective lens?"
PLEASE HELP! ILL GIVE 5 STARS.
Answer: the answer should be 400x
Explanation: duh
essential amino acids cannot be produced by the body,so they must come from our diet.we can get them from eating's foods that contain which biomolecule
Answer:
Essential amino acids cannot be made by the body. As a result, they must come from food.
The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Explanation:
pls mark me as brainliest
Select the correct answer. Which property of a substance can be determined using a pH indicator? A. acidity B. boiling point C. density D. electrical conductivity E. thermal conductivity
Answer:
Acidity
Explanation: I took a test :)
Under which circumstance does Mendel’s principle of independent assortment hold? a. only when there is crossing over b. only when traits are tightly linked (close together) on the same chromosome c. only when traits are on different chromosomes d. only when the traits are not influenced by selection
Answer:
c
Explanation:
Mendel's principle of independent assortment holds only when traits are on different chromosomes.
The independent assortment principle states that genes assort independently of one another. In order words, traits are independently inherited by offspring from parents. For example, the trait for eye color is independently inherited from skin color, height is independently inherited from feet size, and etc.
This principle only holds true when genes are located far away from one another on the same chromosome or when they are on different chromosomes entirely. Once genes are close to one another on the same chromosome, they become linked together and no longer independently inherited.
The correct option is c.
What organisms, other than bacteria, are able to perform nitrogen fixation?
a.
Viruses
c.
Algae
b.
Trees
d.
Protists
Answer:
Algae is able to perform nitrogen fixation.
Answer:
The answer is C.
Explanation:
I just took the test and the answer was c.
Why is it dangerous or bad for babies to be born too small or too early?
Which of the following is nota cation? mercurous ion sulfate Ca 2+ iron(III) ion
Bart has to babysit Maggie for several nights in a row during summer vacation and makes a bet with that Taylor Swift music will get Maggie to Bart gets out the CD collection and when Maggie cries the first night, he plays The second time he plays /DC and rocks out, but she doesn't stop crying. The third time he plays Taylor Swift. When he plays Taylor Swift, Maggie immediately and starts to smile. •What is the independent variable? •What is the hypothesis? •What is the dependent variable? •Milhouse says Bart needs to try to see what Maggie will do if he doenst play any music At all. What is this called?
Answer:
Independent variable: THE TYPE OF MUSIC PLAYED
Dependent variable: MAGGIE'S TEARS
Hypothesis: IF Taylor Swift's music is played, THEN Maggie will stop crying
Control group
Explanation:
The hypothesis of an experiment is a testable explanation given to possibly solve an observed problem. In this question, Maggie thinks Taylor Swift's music will get Maggie to stop crying, hence, one can hypothesize that: IF Taylor Swift's music is played, THEN Maggie will stop crying
Independent variable is the variable that the experimenter manipulates or changes in order to bring about an outcome. The independent variable in this experiment is the THE TYPE OF MUSIC PLAYED by Bart because it is what is changed.
Dependent variable is the variable that is being measured. It responds to the changes made to the independent variable. In this experiment, the dependent variable is MAGGIE'S TEARS.
Milhouse says Bart needs to try to see what Maggie will do if he doenst play any music At all, this is called the CONTROL GROUP because the control group of an experiment is the group that does not receive any experimental treatment i.e. the independent variable is not added.
Which of the following is not part of the circulatory system? Group of answer choices Heart lungs Blood Vessels Blood
Explanation:
Lungs is not a part of circulatory system as it is the part of respiratory system.
Which organ system is responsible for coordination and integration of bodily functions as well as detecting changes inside and outside the body
According to the question, the answer is endocrine system it works with the nervous to control the internal organs it helps with regulation of the body hormones growth and reproduction.
What are 3 main functions of the endocrine system?Makes Hormones for Mood, Development, and Growth. Many different vital hormones are created and controlled within the endocrine system.Sends Hormones into Your Bloodstream.Regulates the Release of Hormones.Thus, endocrine system it works with the nervous to control the internal organs.
To learn more about endocrine system click here:
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What does the nucleus consist of
Answer:
If you are talking about atomic nucleus then it's consist of protons and neutrons.
Explanation:
But if you're talking about cell nucleus
Then,
It contains nuclear envelope, nuclear lamina, nucleolus, chromosomes, nucleoplasm .
Answer:
Protons and neurons.
Explanation:
The atomic nucleus consists of Protons and neurons
most embrassing moments do youhave
Answer:
I was going up on the stairs to my class room , when I fell infront of my class mates.
It was really embarrassing
HELP ASAP!!!
Which group of elements are present in all macromolecules in living things? (8.9A)
C, H, P, N
C, H, O
Na, CI, O
OS S. P, C, O
Answer: the answer is C,H,O
Explanation:Option B is correct
Answer:
c,h ,o
Explanation:
I need help with and i will give you a branlist and it’s science
Answer:
B
Explanation:
Nitrogen has 7 protons
why do plant cells need chloroplast
Answer: Sample Response: Plant cells need chloroplasts so they can capture light energy to make food within the cells. Plant cells make their own food to produce energy that the cells use.
Which type of feed is typically fed to baby chicks?
crumbles
mash
pellets
scratch
A protein has 100 peptide bonds. How many amino acids does it have? Name the four elements found in amino acid.
Answer:
twenty amino acids
Explanation:
and
carbon
nitrogen
oxygen
hydrogen, for the second question
Pls need help the question is up there already giving BRAINLEST to a good answer
Answer:
The last choice. Think of planets, the bigger they are, the stronger they attract to one another
Explanation:
hope it helps
Which process connects glycolysis and the citric acid cycle?
A. lactic acid formation
B. acetyl CoA formation
C.electron transport
D. Krebs cycle
Answer: the answer is B
Explanation: i lied lolololloloolollololol
are human skin cells from inside the mouth prokaryote or eukaryotic?
Answer:
Eukaryotic
Explanation:
what is the amino acid responsible for increasing bone length
Answer:
alanine, arginine, glutamic acid, glycine, and proline—may play a role in bone health, principally through improved production of insulin and insulin‐like growth factor 1 and the synthesis of collagen and muscle protein
Explanation:
Which is a main function of lipids?
O providing energy storage
O transmitting genetic information
O forming bone and muscles
O fighting infection and disease
providing energy storage
why is it harder for a mountain climber to breathe when they are the top of a tall mountain like mount everest
Answer:
Hmm.
Explanation:
Because the air gets thinner the higher the elevation (like on Mount Everest).
It is harder for a mountain climber to breath when they are thr top of a tall mountain because there is lack of oxygen in the high evalation like mount everest
QUESTION 1 to the lungs The spinal cord is a. anterior b. proximal c. posterior O d. distal
Answer:
Anterior
Explanation:
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