Answer:
A. Muscle
Explanation:
Answer:
Skin, hair, fingernails
Explanation:
Excluding water and fat, the human body is made up almost entirely of protein. Protein is the main component of muscles, bones, organs, skin, and nails.
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True or False?
Diatoms lack a flagellum.
Answer:
True
Explanation:
Diatoms are unicellular (one celled) algae. They undergo photosynthesis to produce their own food. They are found in many different marine and aquatic environments and ecosystems.
Diatoms do not move. They don’t have cilia or flagellum, which would allow them to move around and swim.
Therefore, it is true that diatoms lack a flagellum.
Arrange the following substances in order of increasing tendency to donate electrons
with reasons:
α –ketoglutarate, Oxaloacetate, O2, NADP+
, Malate
Answer:
α- ketoglutarate → NADP+ → Oxaloacetate → O2.
Explanation:
The ability of an molecule or a compound to donate or accept electron can be related to their electron affinity.
The more positive the electron affinity is ; the more likeliness such compound is known to be as an electron acceptor which accepts . Also the less positive the electron affinity is the more likeness such compound will be known to be as an electron donor which donates electron
The electron affinity of a compound to accept or donate electron can be related to their reduction potential value (Redox Value).
From the information given ; we have α –ketoglutarate, Oxaloacetate, O2, NADP+ and we are to arrange in an increasing tendency to donate electrons.
i.e from the least tendency to donate electron to the highest tendency to donate electron.
The reduction potential value (Redox Value) of the compounds and molecule given are:
α –ketoglutarate ---> - 0.38 since α- ketoglutarate will react with CO2, it gives isocitrate
Oxaloacetate ----> - 0.18 since Oxaloacetate will react with two moles of hydrogen ion and electrons respectively to give Malate
O2 ------> + 0.82 since O2 will react with 4 moles of hydrogen ion and electrons respectively to give 2 moles of water
NADP+ ------> - 0.32 since NADP+ will react with two moles of electrons and one mole of hydrogen ion to give NADPH
Again; lets recall the less positive the electron affinity is the more likeness such compound will be known to be as an electron donor which donates electron.
So to arrange the given substances in order of increasing tendency to donate electrons since we've known their standard reduction potential value (Redox Value); we have the increasing order as:
α- ketoglutarate → NADP+ → Oxaloacetate → O2.
Which question about whale sharks is nonscientific?
Answer: c
does a whale shark like having a large mouth?
Explanation:
Can someone help me with this :)
Answer:
mutualism
Explanation:
they both benefit from each other or both mutually help each other
Ethology is the study of how animals behave towards each other and in response to
their environment.
True
False
Answer:
True ig.
Explanation:
the science of animal behavior.
the study of human behavior and social organization from a biological perspective.
How is the circulation of a fetus different from the circulation of a baby?
A. The fetus has blood with no oxygen in it.
B. The fetus does not pump blood throughout its body.
C. The fetus does not use its lungs to bring oxygen to the blood.
ENESTE
O
D. The fetus breathes carbon dioxide instead of oxygen.
Answer:
The fetus does not use its lungs to bring oxygen to the blood.
Answer:
The fetus does not use its lungs to bring oxygen to the blood.
Kant's famous First Formulation of the Categorical Imperative reads:Act only according to that maxim whereby you can at the same time will that it should become a universal law. Kant taught morality as a matter of following maxims of living that reflect absolute laws. "Universal" is a term that allows for no exceptions, and what is universal applies always and everywhere.Lying, for any reason, is universally wrong. Be sure to listen to Kant's audio lecture before posting this week! So, consider the famous case of the Crazed Murderer. In your town the Crazed Murderer comes to your door looking for your friend and wanting to kill him.You know that your friend went home to hide. What do you tell the murderer? When he leaves and runs up the street to your friend's house, what do you do?
Answer:
Universal laws are the ethics that guide the behavior of humankind. These laws are universally accepted by all humans and are followed by them in their daily lives. Law of attraction, the law of vibration, is some of the examples of universal law.
Explanation:
Kant believed that telling a lie is wrong, and murdering a human is a crime. All humans should follow these two principles. Keeping in mind the words of Kant, in the given situation, I will not tell the murderer about the exact location of my friend. I will not remain silent also because that crazy man could kill me too. Instead of telling him the right directions, I will tell him the wrong directions and will send him to the wrong place so that he would not harm my friend and me. Though telling a lie is wrong but saving two lives will be more important to me in this situation.
As soon as the murderer leaves, I will call the police and will tell them the direction in which the murderer has gone. This will save me as well as my friend's life, and the murderer will also get punishment for his sin.
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Two example of exothermic reaction in our daily life
Answer:
a burning candle
Iron rusting are both examples of exothermic reactions in our life
Explanation:
Answer:
lighting a candle
Ice Cubes. (When water freezes into ice cubes, the energy is released in the form of heat)
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What is the utilized equipment for studying fluorescence-labelled cells? What are the advantages of labelling the cells?
Answer:
Fluorescent labeling of cells helps in ensuring more visibility of the properties of the cell.
The equipment used in studying fluorescence-labelled cells include epi-fluorescence microscope which helps in providing a more dimensional view of the cells. The spectrophotometers is also used to determine the chemical properties of the cells through the intensity of light measured with this equipment. The flow cytometer is also used in this process.
You are a brilliant student who has discovered a new genetic disease identified by the absence of a key enzyme involved in the Krebs cycle. You work diligently to discover that the missing enzyme is produced in the cytoplasm as a zymogen, but does not get to its correct location in the mitochondria. What is the problem
The given question in incomplete, the complete question is:
You are a brilliant student who has discovered a new genetic disease identified by the absence of a key enzyme involved in the Krebs cycle. You work diligently to discover that the missing enzyme is produced in the cytoplasm as a zymogen, but does not get to its correct location in the mitochondria. What is the problem?
Group of answer choices
the signal peptide on the N-terminus of the protein may be incorrect or missing
the functioning of the Krebs in the matrix
enzymes allow some reactions to occur but not others
dephosphorylation did not occur
Answer:
The correct answer is that on the N-terminus of the protein the signal peptide may be missing or incorrect.
Explanation:
The metabolic reactions of several enzymes that take place within the mitochondria are generated with the assistance of genes produced within the nucleus. The translation of these gene products takes place within the cytoplasm and is targeted towards the mitochondria.
In case, if a flaw is witnessed at the time of targeting towards the mitochondria, the protein would stay within the cytoplasm and will not move forward. Therefore, error in the signal peptide would be the correct option.
Which of the following is a side effect of heat islands?
Drought
Increased precipitation
Lower temperatures and drought
Lower temperatures
Answer:
Drought is a side effect of heat islands
You are studying primates in West Africa and discover a small population of monkeys in an isolated forest. They resemble a species that lives about 50 kilometers away, across a river. The main difference appears to be white tufts of fur underneath the ears in the new population you've found. What evolutionary mechanism probably explains this difference?
Answer:
Geographical isolation
Explanation:
The evolutionary mechanism that can probably explain the difference, in this case, is geographical isolation.
Geographical isolation represents one of the reproductive isolation mechanisms - an array of physiological and behavioural processes that leads to speciation in living organisms.
Geographical isolation refers to the separation of organisms of the same species in terms of physical geographical features such as distance, mountains, water bodies, etc. The separation causes each group to take different adaptive paths, eventually leading to speciation, that is, they become separate species.
In this case, the small population of monkeys in the isolated forest must have been geographically isolated from their counterparts in some ways back. They took a different adaptive path from the larger group as a result of geographical difference and eventually became a new species.
Pretend that you are a doctor and you read your patient’s blood test results. You notice that the patient’s leukocyte levels have increased. What will be your conclusion?
Answer:
This is an indication of immune response to a particular infection.It shows that the WBC are fighting against certain infections which may have entered the host(patient).In some cases, when an individual engaged in physical stress or disturbed emotionally, The WBC level may also rise.
Explanation:
what happens when someone drinks chromyl chloride
Answer:
Explanation:
The high chlorine rates destroy intestinal flora, which can inhibit the ability of your digestive system to effectively absorb and process nutrients. As a result, your body might not absorb and benefit from the minerals, vitamins and fats that you take in, thus making the body more vulnerable to infections.
Please help me please
Use Figure 1 Tay-Sachs Disease Pedigree to answer the following questions.
a.Interpret what the Roman numerals in the pedigree diagram represent.
b.Interpret the genotypes of the parents in this diagram.
c.If a person who does not carry the Tay-Sachs disease gene marries offspring II4, what are the possible genotypes for their children?
Answer:
Please see the answer below
Explanation:
a. The roman numerals represent the various generations in the pedigree.
I represents first generation
II represents the second generation
b. The half shaded square and circle representing the parents means that both of them are carriers for the trait in question. Tay-Sachs disease is an autosomal recessive inheritance, assuming the trait is represented by the allele a, the gentoypes of the parents would be Aa and Aa respectively.
c. Still on the assumption that the disease is represented by the allele a. If offpsring II4 which happens to be free of the Tay-Sachs allele marries a person that also does not carry the Tay-Sachs disease gene, the cross will be as shown below.
AA x AA = AA, AA, AA, and AA.
All the children would be free from the Tay-Sach's allele. That is, they will be homozygous normal.
The roman numerals in the pedigree diagram represent are :
I = represents first generation
II = represents the second generation
Part B:The genotypes of the parents would be Aa and Aa .
Half-shadowed squares and circles that represent the parent mean that both are carriers of the characteristics of the problem. TaySachs disease is autosomal recessive when the trait is represented by the allele a.Part C:The possible genotypes for their children are:AA x AA = AA, AA, AA, and AA.
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What characteristics does a crystalline polymer exhibit?
a) Thin platelets are surrounded by amorphous regions.
b) Thin platelets with chain folds at the faces
c) They are optically transparent.
d) The boundary between thin platelets define the boundary between crystal regions.
Answer:
B) Thin platelets with chain folds at the faces
Explanation:
Crystalline polymer is folding together of molecular chain in an ordered way to form lamella. Polymer crystallize after cooling from evaporation of solvent. It affects the properties of the polymer such as thermal property.
Polymer on freezing becomes disorder forming an amorphous solid.
Why do they conduct autopsies when someone is murdered •to understand the cause of death •to understand the circumstances of death •to understand the toxicology of the the body •to use as evidence in a trial
Answer:
Explanation:
An autopsy is a routine procedure, usually conducted to determine a person's cause of death. Toxicology tests are usually ordered when someone is the victim of a crime, dies unexpectedly or dies for no obvious reason. The purpose of those is to determine if the deceased was under the influence.
to understand the cause of death
Transcription of the developmental gene M is influenced by two different proteins: B and H. Studies of single and double mutants generated the following information:
In mutants lacking B, transcription of M does occur
In mutants lacking H, transcription of M does not occur.
In double mutants lacking B and H, transcription of M does occur.
Based on this information, put these genes in order in a developmental pathway. Use arrows and t-bars between the genes as appropriate. Choose the correct identity of each below.
Gene 1 1st Symbol Gene 2 2nd Symbol Outcome
Answer:
B --I H >> M transcribed
Explanation:
Reverse genetics is a classical approach used in molecular genetics to elucidate gene function in a signaling gene network. This technique consists of producing loss of function mutations in genes of interest in order to analyze their phenotypic effects in the downstream signaling pathway.
In this case, the mutation in B didn't affect the expression of the developmental gene M, together with the other mutant lines, this experiment indicates that B is a downstream suppressor of H (since further experiments show that B plays a role in the signaling pathway). Moreover, the mutation in the gene H affects the expression of M, thereby showing that H acts as a downstream activator of M. Finally, B-H double mutants did neither affect the expression of M, thereby showing that M transcription is dependent of the interaction between B and H.
Knowing that proteins B and H interact with each other, and they influence the expression of the M gene, we can propose the following developmental pathway B gene --| H gene >> M gene
------------------------------
Gene pathways refer to the regulation of genes expression by turning them on and off. Many genes and proteins might be involved in this process, each of them playing significant roles in the signaling pathway.
Available data:
The transcription of gene M depends on proteins H and BIf protein B is lacking, gene M is transcriptedIf protein H is lackin, gene M is not transcriptedIf B and H are lackin, gene M is transcriptedAccording to this information, we can assume that,
The mutation in protein B did not influence the transcription of the gene M because even when B is lacking, the gene is transcripted anyway.
However, we can see that H affected M transcription. The mutation in the H protein influenced the gene transcription.
Mutations in proteins H and B did not influence the transcription of the M gene because, in the absence of both proteins, the gene was expressed.
Probably proteins B and H interact with each other, and this interaction influences the M gene transcription.
The developmental pathway is then as follows,
B gene --| H gene >> M gene
------------------------------------
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The absence of which of these will not affect photosynthesis is - oxygen, Carbon dioxide, water, Chlorophyll, light. Give reason
Answer:
Oxygen
Explanation:
Oxygen is the by product of photolysis during photosynthesis whereby water molecules are split to form protons (H+ ions), electrons and oxygen (by product).
Oxygen is not needed during any of the reactions in photosynthesis and Calvin cycle and will not affect the rate of photosynthesis or possibility of photosynthesis occurring. However, it will affect the process of aerobic respiration instead.
Carbon dioxide is needed in carbon fixation during the Calvin cycle. Without it, 6 carbon sugars cannot be formed.
Water is needed for photolysis to produce protons (maintain the electrochemical gradient) and electrons (to replenish lost electrons)
Chlorophyll are pigments that harvest light energy to excite electrons produced from photolysis of water to be passed down the electron transport chain.
Light is needed as a source of energy to energise the electrons
How do scientists provide solutions for many of the world's problems? A. Through the use of politics B. By keeping their research a secret C. By having more conferences D. Through the use of technology
Answer:
D. through use technology
12
A woman with hemophilia and a man without hemophilia get married. What are the chances that their first child will have hemophilia?
75 percent
50 percent
25 percent
100 percent
Answer:
50 percent
Explanation:
Hemophilia is a disorder in which blood doesn't clot normally.
Lets consider Xn as hemophilia gene.
So woman affected with hemophilia will have XnXn gene and man not affected with hemophilia will have XY gene.
When they both undergo crossover, genes in child will be XXn (girl -carrier), XXn (girl -carrier), XnY (boy-affected) and XnY (boy-affected).
Parent Gene:
XnXn (affected woman)
XY (Man not affected)
After crossing over - children gene for first generation:
XXn (girl-carrier) XXn (girl-carrier) XnY (boy- affected) XnY (boy- affected)Hemophilia is a X - linked recessive disease which means women are only carrier for this disease untill or unless both the X genes are hemophilia gene and man have more chances to get affected as they have only one X - linked gene.
It means 2 out 4 children are affected.
So, there are 50 percet chances that their first child will have hemophilia.
Answer:
50 percent
Explanation:
gradpoint
n
Question 4
1 pts
Cholesterol is made by the liver. It is a precursor to sex hormones and vitamin
D. It is also a part of our cell membranes. Cholesterol is
not an essential nutrient
an essential nutrient
O it depends on your medical conditions
O is essential to only vegans
Next >
< Previous
Answer:
an essential nutrient
Explanation:
cholesterol is a needed nutrient in the body
Which of the following contains the genetic code for protein synthesis?
Answer:
Explanation:
Genetic code The number of nucleotides that are responsible for the formation of the amino acid code Protein synthesis First: Translation process Second: Polypeptide elongation Third: Stop of protein synthesis
What causes leaves to dry out
Answer:
Lack of moisture – Papery leaves on plants are often caused by leaf scorch. .
Excessive moisture – Leaf scorch can also be attributed to too much moisture. This occurs when the soil is so wet that the roots are deprived of oxygen. As the roots smother, the leaves turn dry and papery and the plant eventually dies.
Explanation:
Answer:
Lack of moisture, Excessive moisture, fungi, Excessive fertilizer, and water quality
Explanation:
All to name a few
Complete the sentences by matching the names of trees to the appropriate blanks. To do this, drag the names on the left into the appropriate blanks in the sentences on the right. Match the words in the left column to the appropriate blanks in the sentences on the right. Terms may be used more than once. Make certain you have filled every blank with a term before clicking Submit. 1. Evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 2. Hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as cedar, elm, and pine. 3. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers include pine and mango. 4. Deciduous trees lose their leaves seasonally and include trees such as maple and pine.maple
mango
cedar
elm
pine
Answer:
pine, cedar, and mango,
mango, elm, and maple,
pine and cedar,
maple and elm.
Explanation:
1) Evergreen are seedlings that keep their leaf in all periods and include pine, cedar, and mango trees.
Evergreen is a plant that stays all year round and is still green. There are many various types of juniper plants, including shrubs and trees. Evergreens have many coniferous species (such as fir, hemlock, blue spruce, red cedar), and mango.
2) Hardwoods replicate with petals and also have wide leaves, like mango, elm, and maple.
Hardwoods are created by polymer science in which flowers replicate and have large leaves. A number of plants are nocturnal. Some of the temperate climates lose their leaves each fall as rates drop and inactive in winter, and those of tropical areas will shed the leaf in reaction to temporary or intermittent shortage times.
3) Conifer leaves are stiff and syringe-like in particular, while seedlings are encompassed in cones. The conifers include cedar and pine.
Gymnosperms are conifers. They are cone-bearing seedlings with plant tissues, fruiting trees are all live evergreens.
4) Seasonally, deciduous trees drop their leaves, which include plants such as maple and elm.
Deciduous trees that spend part of each year dropping the leaves. We were also present in warm and subtropical climates all over the globe. Deciduous trees possess large, flat plants that draw a direct sun laser light and necessitate liters of fluids.
1. Evergreens are plants that maintain their leaves in all seasons and include trees such as pine, mango and cedar.
Evergreen plants : They remain green and lives more than one season.
2. Hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as mango, elm and maple.
Hardwood : They are the matured parts of the plant shoots.
3. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers include cedar and pine.
Conifers : They bears coned shaped seed plants.
4. Deciduous trees lose their leaves seasonally and include trees such as maple and elm.
Decidous plants : They are flower bearing plants which shed their leaves annually.
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Which machine would you use to apply a chemical solution on mango fruits which have been infested by fungi
Answer: an ink machine
Explanation:
Species 1 is described as 2n = 8 and has chromosome composition BBDDEEHH.
Species 2 is described as 2n = 10 and has chromosome composition NNPPSSXXZZ.
Select the best answer to classify the organism below based on its chromosome composition. Note that each letter represents a chromosome and that the organism below is either an individual from one of the species above or is derived from one or both species above.
Organism: NNPPPSSXXZZ
Select one:
a. Trisomic
b. Autotetraploid
c. Haploid
d. Autotriploid
e. Diploid
f. Allotriploid
g. Double Trisomic
h. Monosomic
i. Nullisomic
j. Double Monosomic
k. Allotetraploid
Answer:
a. Trisomic
Explanation:
A trisomy is a genomic phenomenon whereby a particular chromosome is present in three copies. In this case, the trisomy involves the chromosome P, being this species a tetraploid with 5 pairs of homologous chromosomes (2n = 10). In humans, the trisomy for chromosome 21 is one of the most common types of aneuploidies that lead to the Down syndrome by producing alterations in gene expression patterns that are associated with changes in the phenotype
Which option uses the monitoring method to check the growth of invasive species?
a. Digging of the species
b. Tilling the land
c. Spraying pesticide
d. Cleaning of ship ballast
Answer:
The answer is A
Explanation:
Invasive species are species that thrive unregulated in an introduced environment/ habitat and affect the biodiversity of the environment. They boom unchecked mostly due to lack of a natural predator. Therefore, introducing a predator will limit their growth.
The option that uses the monitoring method to check the growth of invasive species is digging of the species. Thus, the correct option is A.
What are Invasive species?Invasive species may be defined as those species of organisms that cause ecological or economic threats in a new environment where it is not native.
The invasive species harm the biodiversity of new habitats significantly. In order to prevent this, the specific predators of such species are introduced.
The process of digging of the species also helps in monitoring the growth of invasive species.
Therefore, the correct option for this question is A.
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a. What are general/biological functions of proteins in human body/cells/organism?
b. What is the building block of proteins? Draw the general structure of this building block and write the names of functional groups in the structure?
Answer:A) proteins are useful as enzymes, hormones etc.
B) the building block of protein are amino acids
Further explanation below
Explanation: A) proteins are polymers formed by several chains of amino acids. They occur in living tissue and form 50 -- 60% of the total dry mass of the living cell. Proteins found in the membrane are used as structural integrity. Some proteins are catalytic in nature and are such are used as enzymes. They also occur as hormones. Proteins help in the transport of substances across the cell membrane, when they are found in the cell membrane.
B) the building block of protein are amino acids. They undergo condensation reaction to form proteins.
The structure of amino acid is in the attached photo.
R = the group that determine the name of the amino acid. It may be a hydrogen atom,an alkyl, an aryl, or carboxyl group.
H2N = the amino group
COOH = the carboxyl group
C = the alpha central carbon to which other groups are attached.
A researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryonic cells in culture. In one set of experiments, she succeeded in increasing acetylation of histone tails in the chromatin of the cells. Which of the following results would she most likely see in these cells?
a. activation of histone tails for enzymatic function
b. decreased binding of transcription factors
c. increased chromatin condensation
d. inactivation of the selected genes
e. decreased chromatin condensation