Answer:
Earth-Sun Relationships
Which of the following best explains how the phospholipid bilayer of a transport vesicle contributes to cellular functions?
A
The phospholipid bilayer allows the vesicle to fuse with the Golgi apparatus and the plasma membrane, allowing the exocytosis of proteins.
B
The phospholipid bilayer physically connects the nuclear envelope to the rough endoplasmic reticulum, thus increasing the rate of transcription and translation.
С
The phospholipid bilayer of a transport vesicle contains chemicals that digest the proteins made in the rough endoplasmic reticulum.
D
The phospholipid bilayer contains enzymes that catalyze the conversion of hydrogen peroxide to water and oxygen.
Answer:A
Explanation:
The statement 'the phospholipid bilayer allows the vesicle to fuse with the Golgi and plasma membrane, allowing exocytosis' explains how the phospholipid bilayer of vesicles contributes to cellular functions (Option A).
The endomembrane system is an interconnected network of phospholipid-based membranes which includes the Golgi and plasma membrane.This system (endomembrane system) is used by cells to transport substances to the extracellular medium. Transport vesicles are vesicles that help to move proteins and other biomolecules from the interior of the cell to the extracellular medium.The process by which transport vesicles fuse with the cell membrane to release their components to the extracellular environment is called exocytosis.In conclusion, the statement 'the phospholipid bilayer allows the vesicle to fuse with the Golgi and plasma membrane, allowing exocytosis' explains how the phospholipid bilayer of vesicles contributes to cellular functions.
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5.The chemical bonds between 2 oxygen atoms are polar covalent bonds.
Select one:
O True
O False
Answer:
False
Explanation
There is no substantial difference in electronegativities that would create a polar bond... electrons would NOT be unevenly distributed in O2, meaning that the molecule has a nonpolar covalent bond
15 points, please help!!!
How many condons are shown on the mRNA strand below?
Which of the following is NOT an advantage to using a hydroponic system?
Lower water and nutrient costs
Higher crop yields
Diseases spread slowly through the system
O Faster plant growth
Diseases spread slowly through the system
Explanation:
It's the only disadvantaged one
Humans have 23
chromosome pairs.
COMPLETE
have two X chromosomes, while
have one X chromosome and one Y
chromosome.
DONE
Answer:
Females have two X chromosomes, while males have one X chromosome and one Y chromosome.
Explanation:
Humans have 23 chromosome pairs, out of which one pair determines the biological sex of an individual. Females have two X chromosomes, while males have one X and one Y chromosome. Mothers always pass on an X chromosome to their children, while fathers can pass on an X or Y chromosome. The sex of the child will depend on which chromosome it inherits from its father.
g Catalyzes a substrate level phosphorylation - breaks down sucrose to glucose and fructose - is a type of isomerase - removes one glucose residue from glycogen a. phosphorylase b. sucrase c. phosphohexose isomerase (also called glucose-6-phosphate isomerase) d. pyruvate kinas
Answer:
A phosphorylase removes one glucose residue from glycogen.
Sucrase breaks down sucrose to glucose and fructose.
Phosphohexose isomerase is a type of isomerase.
Pyruvate kinase catalyzes substrate-level phosphorylation.
Explanation:
A phosphorylase removes one glucose residue from glycogen.
The breakdown of glycogen requires a glycogen phosphorylase. It removes a glucose residue from glycogen in the form of glucose-1-phosphate.
Sucrase breaks down sucrose to glucose and fructose.
To metabolize a sugar different from glucose, an organism first has to transform it into glucose so it can then enter the glycolysis. Sucrose is a disaccharide formed by glucose and fructose bonded by an α-1,2 bond. Sucrase breaks down sucrose to glucose and fructose.
Phosphohexose isomerase is a type of isomerase.
It transforms glucose-6-phosphate into fructose-6-phosphate. This is the second step in glycolysis or the Embden-Meyerhof-Parnas pathway.
Pyruvate kinase catalyzes substrate-level phosphorylation.
It transforms phosphoenolpyruvate to pyruvate, releasing in the process an ATP molecule. This is the final step in the Embden-Meyerhof-Parnas pathway.
T/F After cell division, each new cell will contain the same genetic information as
the original cell
A. True
B. False
Answer:
True
Explanation:
in cell division asextually new cells Contain same genetic information
what is the volume of ethyl alcohol solution in a a 70% 250 ml
175 ml Ethyl Alcohol
250 ml x .70 (70% alcohol) = 175 ml, leaving the other 30% out (75ml)
There is more then one answer to the question. What does the brachiocephalic divide into? There is more thane one answer to the question.
A. Right brachiocephalic vein
B. Left jugular vein
C. Left subclavian artery
D. Left common carotid artery
E. Left brachiocephalic artery
F. Right subclavian artery
G. Right common carotid artery.
Answer:
This is health not biology
Explanation:
If you are using a microscope with an ocular lens of 10x and an objective lens of 4x, what is the total magnification of the specimen you are viewing.
Answer:
The total magnification is 40x.
Explanation:
In order to calculate the total magnification of a microscope, we have to multiply the magnification of the used lenses. In other words, for this case:
Total Magnification = Ocular lens' magnification * objective lens' magnification
Total Magnification = 10 * 4 = 40Hi please help !!! Thankyou !!
Answer:
Both parents with the blood type A could produce offspring with blood types A or O
In guinea pigs, black fur color is dominant and brown fur color is recessive. Several matings between the same male black guinea pig and female brown guinea pig produce a total
of 30 black guinea pigs and no brown guinea pigs. What are the genotypes of the parents?
A. Bb x Bb
B. BB x bb
O C. Bb x bb
D. BB x BB
Answer:
BB x BB
Explanation:
All of the offspring inherit traits from the dominant gene. This means there are no recessive present.
What is the standard formula developed by the American society of anesthesiologists for payment of anesthesia services?
Answer:
The formulas for determining payment for surgical procedures requiring anesthesia are as follows: Anesthesia performed personally by the anesthesiologist (AA) Base units plus time units times conversion factor = X - 20% = fee
Answer:
X - 20% = fee.
Explanation:
10. Only living things have
Select one:
O A. atoms
on
O B. molecules
O C. proteins, nucleic acids, carbohydrates, and lipids
O D. compounds
Which condition is important for a temperature inversion?
two layers of warm air
two layers of warm air, one on top of the other
a layer of warm air over a
layer of cold air
a layer of cold air over one of warm air
Answer:
the answer is that"a layer of warm air over a layer of cold air" which can be caused by factors like formation of fronts, scattering, advection.
The condition important for a temperature inversion is a layer of warm air over a layer of cold air. Hence option C is correct.
What is temperature?Temperature is defined as any scale used to represent how hot or cold something is, including the Celsius and Fahrenheit scales. Food, beverages, agriculture, and medical care for both people and animals all depend heavily on temperature. Temperature also frequently affects our general health in a number of ways. In facilities used for medical cold storage, maintaining optimum temperatures is crucial.
The usual behavior of temperature in the troposphere is reversed by a phenomenon known as temperature inversion. A layer of warm air sits on top of the layer of cold air beneath this meteorological occurrence. It is brought on by static atmospheric circumstances, while it can also be brought on by air moving horizontally or vertically.
Thus, the condition important for a temperature inversion is a layer of warm air over a layer of cold air. Hence option C is correct.
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When ants get food from plants and protect the plants from being eaten, what kind of relationship do these two species have? Plzzzz help!!!
a) mutualistic
b) parasitic
c) commensalistic
d) harmful
Answer:
Myrmecophytes, otherwise known as ant-plants, share a mutualistic relationship with a colony of ants. This is when two organisms of different species each benefit from the activity of the other. There are over 100 different genera of myrmecophytes that can be found across the world's tropical regions
Explanation:
Why are stop and start codons signals necessary for protein synthesis
Answer:
The start and stop codons —part of the mRNA's genetic code— are necessary because they indicate the exact length a protein should have.
Explanation:
The sequence of bases contained in an mRNA strand is the genetic code that allows the synthesis of specific proteins. The mRNA information is organized into triplets or codons, whose function is :
To code the amino acids that will be incorporated into the protein to be synthesized. To establish the sequence of amino acids of a peptide or protein, which depends on the sequence of codons formed by nitrogenous bases. To mark the beginning of the synthesis, with the starting codon that, in addition, codes the amino acid Methionine. Establish the end of the synthesis, through the three stop codons, UAA, UAG and UGA.The importance of the start and stop codons is that they establish the exact length that, genetically established, a specific protein must have.
How Primary and secondary succession happen?
Answer:
In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.
Explanation:
Where does aerobic respiration occur in the cell?
Ribosome
Cytoplasm
Mitochondria
cell membrane
Answer:
Mitochondria
Explanation:
Aerobic respiration has most of the characteristic of eukaryotic cells. So, when they have enough oxygen it happens within the mitochondria.
what organ Works to keep your blood plasma isotonic
The kidneys.
The kidneys keep blood isotonic by removing excess salt and water through urine.
How many molecules are in 0.585 mole of lactic acid?
Answer:
There are 3.523x10²³ molecules in 0.585 moles of lactic acid.
Explanation:
To solve this problem we need to use Avogadro's number, which is defined as the number of molecules (or atoms, in the case of an element) that are in 1 mole:
There are 6.023x10²³ molecules in 1.0 mole
With that information in mind, we convert lactic acid moles into molecules:
0.585 mol * 6.023x10²³ molecules/mol = 3.523x10²³ moleculesWhat are genes?
1.specific proteins that DNA wraps around to form chromosomes
2.sections of DNA that control traits by encoding specific proteins
3.specific locations on DNA where chromatids attach to each other
4.entire threads of DNA wrapped around histone proteins
Answer:
2. Sections of DNA that control traits by encoding specific proteins.
Cephalization is (a) the division of the trunk into a scolex, neck, and body. (b) the presence of a head with sense organs. (c) sexual reproduction involving self-fertilization. (d) the ability to replace lost body parts. 2. Flatworms (a) are radially symmetrical. (b) possess a body cavity. (c) reproduce by parthenogenesis. (d) have tissues derived
Answer:
1. a
2. d
Explanation:
Thats the answer
Approximately how many base pairs are improperly matched before being repaired by the DNA polymerase?
a. 1 in 10,000
b. 1 in 100,000
c. 1 in 1,000,000
d. 1 in 10,000,000
e. 1 in a billion
Nucleic acids are made of fundamental units called base pairs along with sugar and phosphate groups.
The base pairs are joined unitedly by a hydrogen bond.
The correct answer is:
Option b. 1 in 100,000
This can be explained as:
In the eukaryotic cells, there is a chance once in 10⁵ polymerized nucleotides to have an error.The errors are repaired by the DNA repair mechanism and the correct nucleotide is added.Therefore, once in 10,000 base pairs are matched wrongly before being repaired by DNA polymerase.
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A scientific model can be used to _______.
a.
replace study of the actual system
b.
better understand systems and processes
c.
complicate ideas
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
Answer:
B
Explanation:
Scientific models are used to gain a better understanding of systems and processes.
Which effect could a mutation in mRNA have on the production of proteins?
mRNA is the messenger molecule, which transcripts the information present in the DNA and then translates it to make the polypeptides. The mutations on mRNA can affect the synthesis of proteins.
The effect of mutation on mRNA:
Point mutations refer to the insertion or deletion of a single nucleotide from the sequence. The mutations can seriously affect the organism and the functioning of the protein formation. The point mutation leads to alteration of the amino acid sequence, which may lead to dangerous diseases or malfunctioning.
Thus, the mutations in the mRNA can result in serious alteration of the amino acid sequence of an organism.
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When a piece of liver is dropped into hydrogen peroxide, the peroxide bubbles vigorously as the hydrogen peroxide (H2O2) decomposes into water (H2O) and oxygen (O2) This range change in reaction rate suggests
that liver is a substrate for hydrogen peroxide
that liver contains lots of germs
the liver contains an enzyme that breaks down hydrogen peroxide
that hydrogen peroxide is a powerful enzyme
Answer: C
Explanation:
Catalyst is one enzyme from liver that breaks down harmful hydrogen peroxide into oxygen gas and water
When a piece of liver is dropped into hydrogen peroxide, the peroxide bubbles vigorously as the hydrogen peroxide decomposes into water and oxygen. This suggests the liver contains an enzyme that breaks down hydrogen peroxide. Thus, the correct option is C.
What is Catalase?Catalase is a common enzyme which is found in nearly all living organisms which are exposed to oxygen gas. Catalase is a key enzyme which uses hydrogen peroxide, a nonradical Reactive Oxygen Species, as its substrate. Catalase enzyme is responsible for the neutralization through decomposition of hydrogen peroxide, thereby maintaining an optimum level of the molecule in the cell system which is also essential for the cellular signaling processes.
Catalase is an enzyme which causes or speeds up a reaction without being affected during the reaction. The enzyme catalase speeds up the breakdown of hydrogen peroxide into water and oxygen gas.
Therefore, the correct option is C.
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How would the structure of bone differ if it contained no minerals?
Making decisions require: no thought a little thought a lot of thought varying amounts of thought
Answer:
Varying amounts of thought
Explanation:
Some decisions, like what you should eat for lunch, require very little thought but others require a lot of thought, like choosing a college.
Answer:
varying amounts of thought
Explanation:
which situation involves the transfer of mechanical energy? and can someone help me please. I will give out the Crown whoever answer the question correctly.
A.
B.
C.
D.
Answer:
Correct answer-C
Explanation:
I'm built different!
Answer:
Answer:C
Explanation:When the racket hits the tennis ball, the racket is transferring energy it built up when the person swung back the racket.Then the tennis ball will increase in kinetic energy.