What are antibiotics and why are they useful?

Answers

Answer 1

Explanation:

An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (bacteria, fungi, parasites, and viruses) and chemicals. ... Each type of antibody is unique and defends the body against one specific type of antigen.

ok


Related Questions

At what point is the population at the carrying capacity?



a
1
b
2
c
3
d
4

Answers

Answer:

ur momma jhit

Explanation:

How can charging occur?

Answers

The previous section of Lesson 2 discussed the process of charging an object by friction or rubbing. Friction charging is a very common method of charging an object. However, it is not the only process by which objects become charged. In this section of Lesson 2, the charging by induction method will be discussed. Induction charging is a method used to charge an object without actually touching the object to any other charged object.

A punnett square represents a cross that produces two plants with orange flowers. If the orange color of the flowers is a result of incomplete dominance, what color were the flowers on the parent plants?

Answers

Answer:

Red and yellow. Incomplete is a blending of traits.

Explanation:

Insectivorous plants use insect proteins as a source of what to synthesize it's own proteins.

Answers

Answer:

Food

Explanation:

A pink-flowered plant is crossed with a white-flowered plant. What is the
probability of producing a pink-flowered plant? %

Answers

If the pink flowered plant is all dominant (let’s say PP for the alleles) and white is recessive (pp) then the probability of a pink flowered plant would be 100%
If pink flowered plant is heterozygous (Pp) and a red flower is dominant (PP) then the probability of a pink flowered plant with white recessive would be 50%

1. Cytoplasm
2. Nucleus
3. Chloroplasts
4. Cell Wall
5. Cell membrane
Which of the components could be observed using a microscope in a prepared slide of leaf
epidermal cells but not in a prepared slide of human cheek cells?
F Components 2 and 3 only
G Components 3 and 4 only
H Components 1, 2, and 3 only
J Components 1 and 5 only

Answers

F is your best answer

Earth Science anything helps

Answers

Answer:

The forest, maybe the atmosphereExplanation:

if you need more help

ask me


can someone please help me please. i need to raise my grade for this class and today is the last day.

Answers

Answer:

yes I will help

Explanation:

yes I will help you

Answer:

Pathogen #2

Explanation:

The immune system RESPONDS to pathogens by creating an antibody, and if you look closely at the shape of the pathogen compared to the antibody, it makes most sense that it would be created in response to this one.

Can some one help me :(.

Answers

Answer:

have a good day, hope this helps :)

Explanation:

hi! just saying that if you look up your question, this answer pops up: Aprocess called pollination...

What is photosynthesis​

Answers

Answer:

The process of a plant converting sunlight, carbon dioxide and water into food

Explanation:

Hey there!

Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunlight, so we eat plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae, and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the green pigment found in the chloroplasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.

Hope this helps!

Have a great day! :)

using Punnett Squares, determine the percentage of offspring which would be heterozygous from the following cross: BB x bb

A. 25%
B. 50%
C. 100%

Answers

Lets take that the father has black hair and the mother has brown hair so -->

Male × Female

Genotypes: BB × bb

Phenotypes: Black brown

Gametes: B _100%_ b_100%_

After reviewing the photo

we have

Genotypes

B: 50% (1/2)

b: 50% (1/2)

Phenotypes

Black: 50% (1/2)

brown: 50% (1/2)

Using Punnett Squares, the percentage of offspring would be heterozygous from the following cross: BB x bb is 25%. Therefore, option (A) is correct.

What are the features of punnett square method?

The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach in 1905.

The Punnett square is a table in which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given. In its simplest form, the Punnett square consists of a square divided into four quadrants.

A Punnett Square is a helpful tool that helps to predict the variations and probabilities that can come from cross breeding. This includes predicting crossing plants, animals, even humans with each other.

Learn more about punnett square:

https://brainly.com/question/27984422

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What do prokaryotes lack that are in eukaryote cells?

Answers

Answer: Prokaryotic cells differ from eukaryotic cells in that they lack any membrane-bound organelles, including a nucleus. Instead, prokaryotic cells simply have an outer plasma membrane, DNA nucleoid structure, and ribosomes.

HOPE THIS HELPS

A cube is measured and has all sides that are 2 cm long. What is the
VOLUME for this cube?

8

24

3

Answers

Answer:

ans is 8..

Explanation:

We know cube has 6 sides..

[tex] \sqrt{6} = 3[/tex]

Then we get that ..

Volume of a cube is s³..

=> side =2cm

=> V = 2³

= 8

How does mutation lead to evolution?

Answers

Answer: Mutation plays an important role in evolution. ... Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele. Recombination also can create a new DNA sequence (a new allele) for a specific gene through intragenic recombination.

Explanation:

How is the human growth protein mass produced?

Answers

hGH is produced as a single-chain, 191-amino acid 22-kDa protein (Lewis et al., 1980b). Alternate splicing of the second codon resulting in deletion of amino acids 31–46 yields a 20-kDa form (about 5–10% of pituitary hGH) (Lewis et al., 1980a). A small amount of 17-kDa hGH is formed as well (Cooke et al., 1988).

Please help I will mark branlist

Answers

Answer:

1. A.

One of the functions of Fats is to regulate Body temps.

2. A

Fats are divided into Saturated and Unsaturated Types.

3. C

Proteins help fight infection (Not all tho)

Penguin wings and swallow wings are _____ structures.
A compound
B analogous
C vestigial
D homologous

Answers

Answer: Analagous

They are different anatomically but perform similar functions.

Please answer questions for the brainliest.. and stars..

Answers

Answer:

Cool air forms denser clouds, and when the clouds from the side of the mountain with cool air try to go to the side of the mountain with warm air, the clouds warm up and dissipate.

A medium is matter through
which waves can pass. Which of
these waves must pass through a
medium to travel?
A
a light wave
B
a sound wave

Answers

Answer:B

Explanation:

i don't like school that's why I'm here

Answers

Answer:

brainly is like school though?? you have to answer people so i d k

Explanation:

Answer:

Same id rather fail than do school

Explanation:

Also how are u? <3

I hope you have a good day


Cells often need to take in materials from their environment which are
found in lower concentration outside the cell compared to inside the cell.
In order to do this, cells must use energy from ATP to move these materials
against the concentration gradient through active transport.
with the concentration gradient through active transport.
against the concentration gradient through passive transport.
with the concentration gradient through passive transport.

Answers

Answer:

With the concentration gradient through passive Transport

Explanation:

I haven't taken biology recently, but if I'm not mistaken, cells that use ATP can only passively do things.

Cells often need to take in materials from their environment which are with the concentrate gradient through passive transport. So the correct option is D.

What is passive transport?

A kind of cellular transport known as passive transport involves the movement of molecules and ions along concentration gradients. It indicates that a drug has a propensity to migrate from a region of higher concentration to a region of lower concentration.

When there are few substances anywhere, those substances tend to migrate there. Contrary to active transport, another kind of cellular transport, which fundamentally requires ATP to move substances against their concentration gradient, the method does not involve metabolic energy (e.g. ATP) since the chemicals are moved downwards or along their concentration gradient. The four main methods of passive transport are osmosis, filtration, simple diffusion, and assisted diffusion.

When a drug is transported passively, it is moved from an area of higher concentration to one of lower concentration. As a result, chemicals migrate along a gradient of concentration.

Therefore the correct option is D.

Read more about passive transport, here

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Tadpoles use lungs to breathe Please select the best answer from the choices provided 0 T OF​

Answers

Answer: False

Explanation: Tadpoles have gills and breathe with gills.

Answer: F

Explanation: Its creepy but they have gills. Little to none have lungs.

The function of the large intestine is to....
A. send bile to the small intestine
B. digest protein
C. reabsorb water from waste
D. store food​

Answers

Answer: the answer should be C

Explanation:

Consider the following statements:
1. Mutations always have a negative effect on an individual.
II. Mutations can have a positive effect on an individual.
III. Murations can have no effect on an individual.
IV. Mutations can have a negative effect on an individual.
Which of the statements above is/are true?

Answers

Answer: II, III, and IV

Explanation:

The answer is the second, third, and fourth.

The second one is true, because some mutations can help us adapt to our surroundings.

The third one is true, because some mutations such as some point mutations won't affect the proteins that are synthesized.

The fifth one is true, because some mutations are lethal.

Calculate the heat energy of 100 g of water that has its temperature increased by 10C . The specific heat of water is 4.18 J/gC

Answers

Answer:

4180 Joules

Explanation:

Multiply 100g by the 10c to get the amount of degrees heating the amount of grams, which is 1000.

Specific heat is how much energy it takes to heat 1 gram 1 degree celcius, which it took 1000 of.

1000* specific heat for water = Total heat energy

1000*4.18J=4180 J

It took 4180 Joules of energy to heat up 100g of water by 10 C

Give three ways in which plants use the glucose made in photosynthesis.
Thanks

Answers

Answer: Energy source. Glucose can used as a substrate and broken down in plant cells by the process of respiration.

Plant energy storage. Thousands of glucose molecules can be linked together to form the complex carbohydrate starch.

Plant building material.

Explanation:

The three ways in which plants use the glucose made in photosynthesis are as follows:

Energy storage.Plant building material.Energy source.

What is Photosynthesis?

Photosynthesis may be defined as the process through which green plants and some algae synthesize their own food (glucose) with the help of carbon dioxide and water in the presence of sunlight.

Starch is stored in the plants that is a derivative of glucose. It can provide energy to the plants when environmental conditions are unfavorable to synthesize glucose.

Cellulose is another derivative of glucose which utilize in the building of plant cell walls to protect plants from the external environment.

Glucose directly provides energy to the plant cell for the fulfillment of metabolic activities like respiration, protein synthesis, cell division, etc.

Therefore, it is well described above.

To learn more about Photosynthesis, refer to the link:

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Effectors may show stimulatory or inhibitory activity. Binding one subunit impacts binding of substrate to other subunits. ALL are correct. The enzyme can have multiple subunits. The regulatory effect is by altering conformation and interaction of subunits.

Answers

Answer: Hello your question is poorly written below is the well written question

All are characteristic of allosteric enzymes except:

a. effectors may show stimulatory or inhibitory activity

b. they have multiple subunits

c. they obey Michaels-Menten kinetics

d. the regulatory effect is by altering conformation and interation of subunits

e. binding one subunit impacts binding of substrate to other units.

Answer : They Obey Michaels-Menten kinetics ( c )

Explanation:

Allosteric enzymes are enzymes that posses the presence of an additional site and an active site.  they are modified by a noncovalent binding an allosteric effector. They do not posses a kmvalue hence they do not obey Michaels-Menten kinetics

Which of the following sequence shows the correct order from the smallest to the largest?


Gene-Cell-Nucleus-Chromosome-DNANucleotide

NucleotideGeneDNAChromosome NucleusCell

CellNucleusDNANucleotideChromosomeGene

CellNucleusChromosomeDNAGeneNucleotide

Answers

Answer:

Nucleotide, Gene, DNA, Chromosome, Cell.

Explanation:

Explain why a leaf kept in the light for 24 hours will turn an iodine solution blue-black, whereas a leaf kept in light for 24 hours and then in the dark for 24 hours will have no effect on an iodine solution

Answers

Answer:

The leaf kept in the light will turn blue-black because of the presence of starch after photosynthesizing. The leaf in the dark could not photosynthesize, which would not create starch so the iodine solution will have no effect.

Explanation:

Iodine stains a blue black in the presence of starch

Blood pressure decreases below normal levels. Blood flow to the heart decreases. Heart is unable to pump as much blood. Blood pressure decreases even more. This is an example of _____ feedback. Multiple choice question.

Answers

Answer:

its called systolic heart faliure or heart faliure with reduced ejection fraction

Other Questions
Select the correct text in the passage. In this excerpt from "Hansel and Gretel" by the Brothers Grimm, which two sentences reveal through Indirect characterization that Hansel is a caring brother? The two children had also not been able to sleep for hunger, and had heard what their stepmother had said to their father. Gretel wept bitter tears, and said to Hansel: "Now all is over with us." "Be quiet, Gretel," said Hansel, "do not distress yourself, I will soon find a way to help us." And when the old folks had fallen asleep, he got up, put on his little coat, opened the door below, and crept outside. The moon shone brightly, and the white pebbles which lay in front of the house glittered like real silver pennies. Hansel stooped and stuffed the little pocket of his coat with as many as he could get in. Then he went back and said to Gretel: "Be comforted, dear little sister, and sleep in peace, God will not forsake us," and he lay down again in his bed. When day dawned, but before the sun had risen, the woman came and awoke the two children, saying: "Get up, you sluggards! we are going into the forest to fetch wood." She gave each a little piece of bread, and said: "There is something for your dinner, but do not eat it up before then, for you will get nothing else." Gretel took the bread under her apron, as Hansel had the pebbles in his pocket. Then they all set out together on the way to the forest. When they had walked a short time, Hansel stood still and peeped back at the house, and did so again and again. His father sald: "Hansel, what are you looking at there and staying behind for? Pay attention, and do not forget how to use your legs." "Ah, father," said Hansel, "I am looking at my little white cat, which is sitting up on the roof, and wants to say goodbye to me." Reset Next Find the missing value so that the line passing through the 2 points has the given slope.(-7,-3) and (-1. y); slope: 1 Eight new graduates are hired by an engineering firm. Each is assigned at random to one of eight cubicles arranged in a row in the back of the room that houses the engineering staff. Two of the graduates are Bill and Cathy. What is the probability that they are assigned adjacent cubicles Define: What is energy transfer and give me an example how you are planning on using energy transfer. B) Redville is directly west of Yellowton, and Purplesburg is 151 miles directly north of Redville. If Yellowton is 258 miles from Purplesburg, how far is Redville from Yellowton in miles? Round to thenearest tenths, if necessray.B) answer: miles A gas with a volume of 250 mL at a temperature of 293K is heated to 324K. What is the new volume of the gas? Imagine researchers following up on seeley's study brought some flat periwinkles appledore island into the lab to test for heritability. What results could they observe that would support the hypothesis that shell thickness is heritable in these snails? What is -0.032 + 6.42 ? Complete the table of values for y = x2 - 4x Why were the boys in the class afraid of Bodh Raj? Which Spartan king saved the Greeks city states from Persians? Answer a b c and d ?pls Solve the system of equations bygraphing.y = 2x - 52y - 4x = 4And find solution. Help is greatly appreciated what is the median of the data? 68,69,71,71,71,73,74,75,75,78 answers: 71,72,78,72.5 The combustion of fuel oil to heat a home is an example of a/an??????? Find the value of Sin^-1(-3/2) 1. What two things reflect some of the incoming solar radiation back out into space? Which equation matches y = 2x + 3a) The cost of buying two shirts after a $3 discountb) The total amount of money you make after spending $3 onsupplies and selling for $2 per itemc) The total height of a 3 inch tree after it grows 2 inches permonth.d) The amount of money in your bank account if you startedwith $2 and make $3 per day. What is the Temperature Variation with Altitude of the Troposphere, Stratosphere, Mesosphere, and Thermosphere? list all the factors of 10