Answers
Answer:
B is the correct answer.
Explanation:
A is incorrect because diffusion does not depend on living system. It can occur in non-living systems as well. C is incorrect because when all transport proteins are used, the transported molecules are carried by the maximal number of transporters. Thus, the transport rate of substance is maximal.
D is false because translocation is primarily related to phloem.
Related Questions
A suspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. To follow this process by monitoring the release of CO214, at which positions in the glucose molecule would the C14 label need to be incorporated
Answers
Answer:
carbons 3 and 4
Explanation:
Alcoholic fermentation is an anaerobic (non-oxygen-requiring) pathway capable of converting one mole of glucose (C6H12O6) into two moles of ethanol (C2H5OH) and two moles of carbon dioxide (CO2), producing during this process two moles of ATP. The overall chemical reaction is as follow: C6H12O6 (glucose) >> 2 C2H5OH (ethanol) + 2 CO2. During this process (fermentation), energy is obtained from the glycolysis process by which each glucose molecule is broken down into two pyruvate molecules (2 CH3COCOO−). Pyruvic acid is an organic acid that ionizes to produce a hydrogen ion and a molecule of pyruvate. Subsequently, this pyruvate is then converted into ethanol and CO2, generating NAD+, i.e., the oxidized form of nicotinamide adenine dinucleotide or NAD, which is required for glycolysis (and therefore to produce ATP). Moreover, dismutation refers to the redox reaction by which one compound with an intermediate oxidation state converts into two compounds. In consequence, the CO2 generated during fermentation arises from the dismutation of pyruvic acid. During this process, the major source of CO2 is carbon 3 (C3) and carbon 4 (C4) of the glucose as a result of the dismutation of pyruvate, and thereby these positions in the glucose molecule would the C14 label need to be incorporated.
What is the closest crop relative of Aloe vera?
Answers
Answer:
lily
Explanation:
i’m not 100% sure try researching
how does Fibrocartilage receive it's nutrients?
Answers
Answer:
These cells receive nutrients through a double diffusion barrier but rely on anaerobic respiration due to low oxygen concentration.
What is the answer with explaining
Answers
Answer:
actually I'm not even sure but I would say that the wife cheated
g An Hfr strain is produced when Select one: A. an F episome is transferred to a new cell. B. an F episome leaves the E. coli chromosome. C. an F episome leaves the host chromosome and removes some of the host chromosome. D. an F episome integrates into the E. coli chromosom
Answers
Answer:
A. an F episome is transferred to a new cell.
Explanation:
Hfr strains arise from the integration of the plasmid into the bacterial cell in one of several ways such as the recombination of events. Most commonly are formed by the UV-induced integration of E coil F factor. It tries to transfer a copy of the F factors as well the entire chromosome to the recipient bacterium.Sigmoidal plots of activity versus substrate concentration are exhibited by a. holoenzymes. b. Michaelis-Menten enzymes. c. allosteric enzymes. d. monomeric enzymes. e. isozymes.
Answers
Answer:
The correct answer is C
Explanation:
Allosteric enzyme is an enzyme that has more than one active site on the surface of the enzyme. Generally, the binding to one of these active sites affects the affinity of the other active sites on the enzyme; this causes the enzyme not to follow the Michaelis-Menten's enzyme kinetics. Thus, when the activity versus substrate is plotted on a graph, a sigmoidal curve shown instead of an hyperbolic curve (like other enzymes).
Flows of energy and cycles of nutrients link the biotic and abiotic components of ecosystems into a/an __________ system, ultimately structuring the feeding relationships, or __________ structure of organisms that inhabit them.
Answers
Answer:
The correct answer is - dynamic and trophic.
Explanation:
A/an dynamic system is linked to lows of energy and cycles of nutrients link the biotic and abiotic components of ecosystems that structure the feeding relationships, or trophic structure of organisms that inhabit them. The trophic structure is the position of the organism in the ecosystem and food chain.
The correct answer is - dynamic and trophic.
nucleotides are the basic
unit for which macro molocules
Answers
The correct answer to question is Nucleic Acids, (DNA) AND (RNA).
hope this helps let me know.
Describe how oxygen is transported in blood, and explain how temperature, pH, BPG, and affect oxygen loading and unloading.
Answers
Solution :
The flow of oxygen in the blood is been transported by two ways :
1. in plasma 1.5%
2. bound to hemoglobin 98.5%
As the oxygen loads in the body, affinity of the Hb makes the oxygen loading very efficient in the blood. The Hb molecule gets saturated when all the 4 hemes are oxygen binded.
The decreased pH weakens the hemoglobin oxygen binding in the tissues.
Higher temperatures in the oxygen means a lower affinity and thus more oxygen is released and so the oxygen unloads.
Increase in the temperature, the BPG and the modification of the structure in the hemoglobin decreases the affinity for the oxygen and further enhances the unloading of the oxygen in the blood.
I want to understand what is a strome !!!???
Answers
Answer:
Do you mean the Stroke?
Explanation:
If you mean Stroke, it is a spongey transparent substance in a plant cell that helps support its function
write the function of eustachian tube?
Answers
Answer:
Equalized air pressure.
Explanation:
The function of eustachian tube enables air pressure to be equalized between the outside air and the middle ear cavity. The eustachian tube also known as pharyngotympanic tube that connects the middle ear cavity with the nasopharynx. Eustachian tube is responsible for the aeration of the middle ear system as well as clears mucus from the middle ear into the nasopharynx. Opening and closing functions of the eustachian tube are is very important.
What is the role of DNA polymerase enzymes in replication?
(A) unzipping the double helix by breaking down the hydrogen bonds
(B) adding the free nucleotides to the complementary strand of DNA
(C) splitting the DNA molecule
(D)connecting the fragments on the lagging strand of DNA
Answers
Answer:
A
Explanation:
the function of DNA polymerase is to unzip the double helix structure of DNA by breaking down the weak hydrogen bond
Answer:
(B) adding the free nucleotides to the complementary strand of DNA
Explanation:
A DNA polymerase is an enzyme capable of creating new DNA molecules by sequentially adding nucleotides to the three prime (3')-end of a DNA strand. A DNA strand is a polynucleotide chain composed of a linear series of nucleotides, each consisting of a deoxyribose sugar, and phosphate, and a base (i.e., thymine, guanine, cytosine and adenine). Before a cell starts to divide, it needs first to replicate its genetic material by using DNA polymerases that duplicate the cell's DNA during the interphase (S phase). During this process (DNA replication), an enzyme known as helicase unwinds the DNA molecule, which is made up of two antiparallel strands oriented in opposite 3′-5′ directions to each other. Subsequently, each strand is used as a template for its replication through DNA polymerases that can add nucleotides (one at time) to an existing short fragment of RNA, i.e., the primer sequence, which is paired with the template DNA strand.
__________________ moves the respiratory medium over the respiratory surface.
Group of answer choices
perfusion
percolation
ventilation
diffusion
Answers
Answer:
ventilation
Explanation:
Breathing, also known as ventilation, is the process of moving air or water in order to facilitate the gas exchange between the external and internal (body) environment, mostly to eliminate carbon dioxide (CO2) and bring in oxygen (O2). For example, fish are aquatic animals that need to run water over their gills to get the O2 that they need to survive (gills are organs that create a large surface area for ventilation). Moreover, insects ventilate their tracheal system to get O2. Finally, terrestrial vertebrates (i.e., amphibians, reptiles, birds, and mammals) use organs called lungs to exchange O2 and CO2 between their cells and the external environment.
Which two physical properties of graphite make it a good mineral for use in pencils?
1. luster and fracture
2. cleavage and color
3. hardness and streak
4. greasy feel and composition
Answers
The physical properties of graphite which makes it good for pencils is ;
( 3 ) hardness and streak
Graphite is made up of carbon atoms which are held together by van der waals forces ( weak force ). They are soft and slippery which is why graphite is used in the manufacture of lubricants. while graphites are used for the manufacture of writing materials such as pencils because of its hardness and streak
Hence we can conclude that the physical properties of graphite which makes graphite good for the production of pencils are hardness and streak
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Which of the following hormones is directly
controlled by nervous system?
A. Adrenaline
B. Estrogen
C. Thyroxine
D. Cortisol
Answers
Answer:
adrenaline is the hormone which is directly controlled by nervous system
Which of these actions is likely to prevent the spread of pathogens in the environment?
Washing hands once a week
Coughing out loud
Touching wounds
Washing fruits
Answers
Answer:
A or D
Explanation:
Coughing out loud and Touching wounds will spread it, not prevent it, Its most likely D, because only washing your hands once a week is basically useless and will prevent little- to nothing so washing fruits is your best bet I would go with D
Which is NOT true of smooth muscle? A. They use peristalsis to move substances through tubes. B. They are found in the hollow parts of the body such as blood vessels and the small intestine. C. They can become fatigued. D. They are connected by gap junctions.
Answers
Answer: the answer is C
Explanation: I been trying to find the same answer for this exact question for acellus and C was the correct answer
Who was Dr. Joseph Bell?
Answers
Answer:
Sherlock Holmes
Explanation:
He was the inspiration. Not the actual Holmes.
Answer:
Joseph Bell (2 December 1837 – 4 October 1911) was a Scottish surgeon and lecturer at the medical school of the University of Edinburgh in the 19th century.
the impact of grassroots challenges to trash incinerators
Answers
If Sarah had skin vesicles on the anterolateral region of her neck, which peripheral nerve is infected by the virus? To which peripheral nerve plexus does this nerve belong
Answers
Answer: transverse cutaneous nerve
- cervical plexus
Explanation:
The peripheral nervous system refers to the network of the motor and the sensory nerves which helps in connecting the brain and spinal cord to the entire human body. The peripheral nerves control movement, sensation, and motor coordination.
If Sarah had skin vesicles on the anterolateral region of her neck, the peripheral nerve affected is the transverse cutaneous nerve. The transverse cutaneous nerve innervates the skin which covers the anterior cervical region and it brings to the cervical plexus.
What is physiological?
Answers
Why do you think it’s a challenge to reduce fossil fuel usage in homes in the United States? How could the use of fossil fuels affect the biodiversity in neighborhoods and the surrounding ecosystems?
Answers
Answer:
Well,for starters fossil fuels have been there since the beginning of the country's life style in using it.Eg;for household used such as cooking.
Explanation:
The used of fossils may affect the surrounding biodiversity,and ecosystem due to the amount of Carbon Dioxide they emitted when being lit,which contributes to Ozone Depletion,and other global issues
"During cytokinesis of an animal cell, a cell plate grows from the center moves outward"
True
False
Answers
Answer:
True
Explanation:
Part B
Next, our galaxy can be organized into a galaxy group. This galactic group is a collection of about 50 galaxies that are
gravitationally bound to each other. What is the name of the galaxy group in which our galaxy belongs? As you are
researching, list at least three characteristics that you learned about our galaxy group.
Answers
Answer:
The Milky Way galaxy is part of a group of galaxies called the Local Group. Three characteristics that I learned about our galaxy group is The Milky Way is a large barred spiral galaxy, they come in a variety of shapes and sizes, and it appears as a milky band of light in the sky when you see it in a really dark area.
Explanation:
Edmentum
The Milky Way galaxy is a member of the Local Group of galaxies named Laniakea . The Milky Way is a massive barred spiral galaxy and can be seen as a milky band of light.
What are the characteristic feature of the Milky Way?
The Milky Way galaxy is a massive, flat, disk-shaped collection of stars, gas, and dust that spans around 100,000 light-years and is several thousand light-years thick.
The Milky Way galaxy contains every star that we can see with our unaided eyes. The Andromeda Galaxy is the only celestial object visible in the night sky with unaided eyes that is not part of the Milky Way.
It is estimated that the Milky Way is 12 billion years old.
Thus, Milky Way is the galaxy we live in amongst others.
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White petal color is a recessive trait.
Answers
Answer:
An example of a dominant trait is the violet-colored flower trait. For this same characteristic (flower color), white-colored flowers are a recessive trait.
Explanation:
Sets the metabolic rate for the cells of the body describes
Answers
Answer:
BMR ; Basal Metabolic Rate
Explanation:
MR is the rate of energy expenditure per unit time by endothermic animals at rest....
Metabolic comprises the process that the body needs to function.
Basal metabolic rate is the amount of energy per unit of timethat a person needs to keep the body functioning at rest
The eurkaryotic cells glycocalyx is..?
Answers
Explanation:
The glycocalyx is a carbohydrate-enriched coating that covers the outside of many eukaryotic cells and prokaryotic cells, particularly bacteria .
Which area appears only on the posterior part of the body? a)scapular b)patellar c)umbilical d)sternal
Answers
Answer:
Patellar
Explanation:
Answer:patellar
Explanation:
On the posterior side
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Answers
Answer:
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Albinism is a recessive trait where an individual does not produce the pigment melanin. A man and woman who both produce melanin have one child out of three who has albinism. What are the genotypes of the man and woman
Answers
Albinism is a recessive trait where an individual does not produce the pigment melanin. Albinism is an autosomal disease where the gene which is expressed here is having albinism which is the cause of heterozygous condition.
What is the heterozygous ?
Heterozygous is the condition where the genes in the alleles are different to each other where one has a dominant character and one has a recessive character. The genotypes of the woman and man decide the genotype of the offspring.
The genotypes of the man and woman is heterozygous where the dominant once out of 3 will have the dominant traits for the albinism. The condition will have to be heterozygous as in the Ia Ii gene where the gene for the albinism will be i gene.
The same genotype for the male where the Ib i gene in which i i the albinism carrying gene here the ii condition of the gene will express the albinism.
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