Answer:
A penicillin reaction is a life-threatening event. In those who are allergic to penicillin, the drug acts as a hapten that binds to blood proteins, causing a strong immune response.
Explanation:
Low molecular weight chemicals can bind to antibodies, but cannot activate B lymphocytes by themselves (they are not immunogenic). To generate specific antibodies to these small chemicals, immunologists typically bind them to macromolecules prior to immunization. In these cases, the chemical is called a hapten. Penicillin G is a typical hapten that tends to covalently bind to lysine residues both in solution and in protein-bound cells. Penicillin is a drug that behaves as a hapten, since the beta-lactam ring under physiological conditions opens and reacts with the lysine residues of proteins, forming a complex that is the main antigenic determinant of penicillin and other beta-lactams and is capable of to stimulate responses mediated by antibodies or by T cells.
which structures are found in typical prokaryotic cells and also in typical plant cells
a) cell walls
b) histones
c) telomeres
d) tonoplasts
Answer:
a. cell wall
pls Mark brainliest
8. Two rabbits are bred together. One is heterozygous for agouti coat
(genotype: Cch) and the other is albino. What are the possible phenotypes
of their offspring? Construct a Punnett square to support your answer.
Answer:
- Parental cross = Cch x chch
- F1 = 1/2 Cch (agouti coat); 1/2 chch (albino coat) >> 1:1 phenotypic ratio
Punnett square:
ch ch
C Cch Cch
ch chch chch
Explanation:
A heterozygous individual is an individual who has two different gene variants (i.e., alleles) at a particular locus. In this case, individuals having the "agouti coat" trait are heterozygous carrying both 'C' and 'ch' alleles. On the other hand, a homo-zygous individual has the same allele at a given locus (here, the 'chch' genotype associated with the albino phenotype). Therefore, as observed in the Punnett Square above, when a heterozygous parent is crossed with a homo-zygous recessive parent for a single gene, alleles segregate in the gametes of both parents so an expected 1:1 phenotypic ratio will be observed.
Light dependent reactions are carried out both on and in between photosystems. This process is like the last stage of aerobic respiration in that both:______.
a. reaction sequences carry out electron transfer phosphorylations.
b. processes generate ATP.
c. processes involve electron flow.
d. systems are lodged along and within a membrane surface.
e. all of the above.
Answer:
e. all of the above
Explanation:
Photosynthesis and respiration are two complementary processes.
Photosynthesis occurs in chloroplasts. The electron transport chain is placed in the thylakoid membrane, where it occurs light-dependent reactions.Respiration occurs in mitochondria, in the internal membrane, where is the electron transport chain.Photosynthesis needs solar radiation to produce organic compounds.The respiration process needs organic compounds to obtain chemical energy.Photosynthesis transforms CO₂ into organic compoundsRespiration transforms organic compounds into CO₂.In the photosynthesis process occurs a release of oxygen, which is used during the respiration process. Both processes are part of the carbon biological cycle.Both processes use electron transport chains to capture energy, which will be used in other cellular reactions.Respiration´s final products are CO₂, ATP, and waterPhotosynthesis´s final products of light-dependent reactions are oxygen, ATP, and NADPH.Using sophisticated molecular cloning techniques, you have isolated the genes for two serotonin transporters, called TransA and TransB, which are expressed in these neuronal cells. A preliminary immunofluores- cence localization of fixed and permeabilized cells found very bright staining of TransA at the nerve cell plasma membrane and little staining elsewhere. TransB, in contrast, stained only very faintly at the nerve cell plasma membrane, but there was intense staining within the cytosol.
Required:
In which subcellular membrane or organelle would you expect most of the TransB to be found? Explain your answer.
Answer:
Vesicles
Explanation:
Serotonin is a neurotransmitter that transports signals or messages between neurons.
Most neuronal cells have vesicles in their interior, which are organelles that store neurotransmitters for exportation -by exocytosis- or from recycling -by endocytosis-. These vesicles also protect the neurotransmitter from the enzymatic action.
Vesicles form in the cellular soma, from where they are transported to nervous terminals. Once the vesicle releases the neurotransmitter to the intercellular space, their membrane remains available in the plasmatic membrane to be reused.
The neurotransmitter concentration in the vesicle interior is related to the storage system and the transport system. There are specialized transporter proteins in the vesicle membrane that are involved with the introduction of the molecule to the organelle.
In the exposed example, transporter Trans B might be located in the vesicle membranes, and hence could be found in the cytosol of the cells.
which molecules in your body do not contain carbon atoms
Question 8 of 24
Which item is a carbon sink?
A. Beach sand
B. Ocean water
C. Glaciers
D. Forest fires
SUBMIT
Answer:
oceans water
Explanation:
What is added to tacos, burritos, and soups that is
high in fiber?
Answer: flax seed whole wheat tortillas.
1⁄2 cup low-fat refried beans.
1⁄4 cup low-fat cheddar cheese.
leaves lettuce.
1⁄ cup salsa.
1⁄4 cup fat free sour cream.
Pinto beans are added to tacos, burritos, and soups that are high in fiber.
What are fibers and their types?The body is unable to digest fiber, which is a form of carbohydrate. While fiber cannot be converted into glucose, the sugar that results from the breakdown of most carbs, fiber travels through the body undigested.
The solubility, viscosity, and fermentability of dietary fibers, which have an impact on how they are metabolized by the body, can be used to classify them in general. Dietary fibers have a wide range of chemical compositions.
Fibre comes in two varieties: soluble and insoluble. Both are crucial for good health, digestion, and illness prevention. Thus, Pinto beans are added to tacos, burritos, and soups that are high in fiber.
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Describe the difference between the five types of managed care plans
Answer:
You choose a primary care doctor who coordinates most of your care. Preferred Provider Organizations (PPO) usually pay more if you get care within the network. They still pay part of the cost if you go outside the network. Point of Service (POS) plans let you choose between an HMO or a PPO each time you need care.
The _______ is the part of the neuron that carries information away from the cell body.
Help me out with this again, pretty please?
(2nd time)
I need explanation for your answers, even though it's multiple choices, I still need your explanation for it.
DUE TOMORROW!
If your answer is NONSENSE it will be deleted as soon as possible!
But if your answer is CORRECT, HELPFUL, HAS AN EXPLANATION, I'll chose your answer as the BRAINLIEST ANSWER!
How does penicillin kill bacteria? Penicillin augments the body's natural ability to enzymatically degrade bacterial peptidoglycan, causing the cells to lyse Penicillin targets a cross-linking reaction in cell wall manufacture. By blocking the enzyme responsible, penicillin stops the bacteria from producing new peptidoglycan. Penicillin targets muramic acid in the cell wall. By damaging a key component of the cross-linking reaction, the cell can't build a strong peptidoglycan mesh and quickly breaks apart. Penicillin damages the lipid membrane of bacterial cells by enzymatically removing peptidoglycan from the membrane's outer surface. The weakened cells quickly lyse.
Answer:
The correct answer is option c. By blocking the enzyme responsible, penicillin stops the bacteria from producing new peptidoglycan.
Explanation:
Penicillins are derived from Penicillium molds. These are a group of antibiotics, used in treating various types of bacterial infections such as urinary tract infections, respiratory tract infections, gastrointestinal infections etc.
These antibiotics also used in treating gonorrhoea, meningitis, pneumonia, syphilis, etc. These antibiotics stop the bacteria from producing new peptidoglycan that blocks the enzyme.
Which of the following would NOT be a reliable source of information?
Eyewitness.... because it can't actually sometimes determine what really happened on the site so it can't give a reliable sitrep
_______and_______process help in balancing of carbon dioxide and oxygen in the environment
Answer: Respiration and combustion
(URGENT) Which of these statements is correct about the ocean waves? (100 points)
A) Wave 1 and Wave 2 have the same wavelength.
B) Wave 2 and Wave 3 have the same wavelength.
C) Wave 1 and Wave 2 have the same amplitude.
D) Wave 2 and Wave 3 have the same amplitude
Answer:
D
Explanation:
Wave 2 and Wave 3 have the same amplitude.
Should we clone animals that are going or have gone extinct (in other words bring them back
either from the brink of extinction or from extinction)? Explain your answer.
Answer:
I think we should but people are preventing this though
Explanation:
I think we should because it might benefit the world and let scientists to discover this animal. But then I don't think so because animals that are/were extinct could perhaps be from climate change. Nowadays, people don't take this matter seriously causing habitats to be destroyed and animals to be extinct :) Like icebergs are melting that mean penguins are at risk of being extinct,if we did something then this situation will be prevented. However dinosaurs did become extinct and they did not come back so its probably just life and this is how god planned it:)
A newly discovered pigmented microbe contains a capsule and flagella, but no chloroplasts or cilia. This microbe is approximately 2 microns in size, and divides by binary fission. The nucleic acid of this microbe is packaged within an envelope. Based on this information, is this microbe a eukaryote or a prokaryote? Explain the reasoning behind your answer.
Answer:
in which grade did u read
The brain generally stores new information in its own different and unique netowrk but retrieves information by chunking it with information in netowkrs that contain similar characteristics or associations.
a. True
b. False
Which other group of organisms can supply energy to a food chain in a similar way to plants?
Which of the following is correctly defined?
A. Ecosystem - A group of conspecific organisms.
B. Population - An individual life form.
C. Community - A group of populations.
D. Population - A group of communities.
I need help!!1
Answer:
both b and c I think..........
Population - An individual life form. and Community - A group of populations.
What is population?A population is the entire set of people in a group, whether that group is a country or a collection of people who share a certain trait.
A population is the group of people from which a statistical sample is taken in statistics. Therefore, a population is any collection of people who have something in common.
A statistically significant portion of a population, rather than the full population, may also be referred to as a sample. For this reason, the standard deviation, or standard error, of a statistical study of a sample from the full population must be disclosed.
Therefore, Population - An individual life form. and Community - A group of populations.
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Which of the following is a benefit of dams?
A. They impede fish migration and spawning
B. They provide a source of energy
C. They increase the sediment load of waterways
D. They divert water from ecosystems
The membrane potential that occurs when neurotransmitters bind to their receptors is called _______.
Answer:
action potential
Explanation:
Transmission of a signal within a neuron (from dendrite to axon terminal) is carried by a brief reversal of the resting membrane potential called an action potential. When neurotransmitter molecules bind to receptors located on a neuron's dendrites, ion channels open.
Answer:
I guess action potential is the correct one
According to a famous article by Max Kleiber, the scaling of the metabolic rate or energy consumption for mammals Pmetab (measured in kcal/day) with the body mass Mb (measured in kilograms) is Pmetab=70M0.75b.
a. What is the specific metabolic rate, i.e. the metabolic rate per kilogram of body mass for the following animals?a mouse whose mass is 30g. Give your answer to three significant figures.
b. What is the specific metabolic rate, i.e. the metabolic rate per kilogram of body mass for the following animals?a cow whose mass is 300kg. Give your answer to three significant figures.
Answer:
Explanation:
Given that:
The scaling of the specific metabolic rate is:
[tex]=\dfrac{P_{metab}}{m}[/tex]
where;
[tex]P_{metab} = 70M_b^{0.75}[/tex]
[tex]=\dfrac{ 70M_b^{0.75}}{m}[/tex]
(a) For a mouse whose mass = 30 g = 0.030 kg
The specific metabolic rate [tex]=\dfrac{ 70*(0.030)^{0.75}}{(0.030)}[/tex]
= 168.197 kg
≅ 168 kg to 3 significant fig.
(a) For a cow whose mass = 300 kg
The specific metabolic rate [tex]=\dfrac{ 70*(300)^{0.75}}{(300)}[/tex]
= 16.8197 kg
≅ 16.8 kg to 3 significant fig.
How is it possible for mad made things to move?
Las semillas de las plantas, especialmente las más consumidas en nuestra dieta como el trigo, el maíz, el arroz y otros cereales o las lentejas, los porotos y otras legumbres, tienen un depósito de almidón que está destinado a alimentar el embrión en las primeras etapas del desarrollo, hasta que esté en condiciones de hacer la fotosíntesis por sí solo. ¿Con qué función de los lípidos se relaciona esta adaptación? Justificar.
Answer:
lol I dont know the answer
What is the purpose of a geological time scale ?
It used to predict natural disaters throughout Earth’s history.
It is used to present the correct sequence of events in the Earth’s history.
It is used to determine the absolute dates in years for different periods.
It used to create a naming system for flora and fauna.
Answer: B. It is used to present the correct sequence of events in the Earth’s history.
Explanation: On Edge!!!! :)
Answer:bbbbb
Explanation:
qcw3ec
explain how misuse of human resources can be harmful
The right optic tract: A. carries information from the lateral halves of both retinae. B. carries information from the medial halves of both retinae. C. carries information from the lateral half of the retina (right e
Answer:
The optic tract carries retinal information relating to the whole visual field. Specifically, the right optic tract corresponds to the left visual field.
Explanation:
Genes:
A. in plants exist only in some individuals
B. they determine the structural and functional characteristics of each individual
C. they determine only the functional characteristics of each individual
D. they determine only the characteristics structural of each individual
E. do not exist in prokaryotes
Answer:
B. They determine the structural and functional characteristics of each individual
Explanation:
Genes are present in all plants and in all prokaryotes, so answer choices A and E are incorrect. Genes are present in all living things.
Genes do determine the structural characteristics of each individual, but they also determine the functional characteristics.
Structure, which is controlled by genes, directly affects function. For example, a gene could code for a specific protein's structure, which will in turn give it a specific function.
So, the correct answer is B.
Please help!! Need the Correct Answer ASAP!!
Which statement is true?
A.Peat is a fossil fuel because rewetting it takes only 3–5 years.
B.Peat is a fossil fuel because the total time for restoration is lengthy.
C.Peat is not a fossil fuel because it has biologic origins, making it a biofuel.
D.Peat is not a fossil fuel because humans can promote the replenishment of peat.
Answer:
c) peat is not a fossil fuel because it has biologic origins, making it biofuel
Explanation:
Peat is soil/ turf
how myelinated and nonmyelinated neurons differentiated?
Answer:
The main difference between these two types of neurons is the speed of conduction of impulse. ... Majority of the neurons in the central and peripheral nervous system are myelinated since they require fast conduction speeds. A neuron with unmyelinated axon has a comparatively lower speed of conduction of the nerve signals.
Explanation: