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nika2105 [10]
3 years ago
8

Directions: On the line before each definition, write the letter of the term that matches it correctly. Each term

Biology
1 answer:
PolarNik [594]3 years ago
6 0

Answer:

1. = G

2. = B

3. = H

4. = C

5. = I

6. = A

7. = D

8. = F

9. = E

Explanation:

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An isolated African canyon community in which cheetahs and leopards consume only impala antelopes is being observed. In a hypoth
ss7ja [257]

Answer:

<em>The population of the impala antelopes will decline rapidly.</em>

Explanation:

The cheetahs and leopards are the predators of the impala antelopes. If the population of the predators arises, this means there will be more predators feeding on the prey. As a result, the population of the prey will decline. Hence, in the above scenario, the population of the impala antelopes will decline rapidly as it will have more number of predators. The population of the cheetahs might also start to decline if it does not move on to another source of food.

8 0
4 years ago
Please give a small paragraph quickly summarizing the what, when and how of each of the following techniques: PCR, DNA gel elect
Anuta_ua [19.1K]

Answer:

All are used to resolve questions in molecular and biochemistry/biotechnology

Explanation:

PCR: resolution of an amplicong on agarose gel to chech size after thermocycling

DNA gel electrophoresis,

Recombinant DNA, A DNA fragment that it attached to another such as a reporter, commonly used is GFP attached to protein of interest to track movement

Cloning, Duplicate an amplicon, insert into a vector, transform this vector into a bacteria that is designed to make multiple copies of itself

Northern blots, Method used to detect different sizes RNA from a mixture of other products

Southern blots, method used to detect different sizes of DNA similar to the idea of a Northern Blot

Western blots, Resolution of protein sizes by running the protein through an acrylamide gel in an ionic buffer

Antibody production (polyclonal and monoclonal),  Generating an antigen against a protein using different parts of the same protein (polyclonal) or only a specific sequence of the protein not a variety of antigens from the full length (monoclonal)

ELISA, enzyme-linked immunosorbent assay is used to check the presence of a protein

FRET, Transmission energy of one molecule to another, it is usually included in the detection of colors in fluorescence microscopy

FRAP, this method will is called Fluorescence recovery after photobleaching, a microscospy measurement

FACS, this is a type of cell sorting Fluorescence-activated cell sorting

Fractionation by centrifugation, Lysis of agents such as cells that can be lysed by spinning in a centrifuge

Chromatography, separation of chemical thru a media by colors

Fluorescence microscopy,  use of fluorophore to detect specimen under a microscope a specific wavelength

Coomassie staining,  procedure used to stain an acrylamide gel or membrane to show protein presence

Silver staining, use of a silver colloid to change the way proteins are seen on a Western blot or under a microscope

His tag, a string of histidine residues attached to a protein for easy manipulation/detection

GST tag, Glutathione S-transferases is a group of proteins used in protein purification an option other than His tag

Confocal microscopy,

FISH, The generation of a nucleotide probe used in DNA sequence detection in histology

PCR, Polymerized chain reaction used to amplify selected region of DNA

DNA library, the collection of gDNA of a specific specie or tissue

cDNA library, collection of the coding sequence of a organism/tissue

Microarrays, the platform used to detect thousands of gene sequences at once

Sanger sequencing, Method used to derrive DNA sequence developed by Frederick Sanger by incorporating a single nucleotide at a time

GFP, Green fluorescent protein, a reporter protein used in recombination protein creation

Bright field microscopy, microscopy that uses light or natural light to detect samples

DIC microscopy, Differential interference contrast is used to detect and enhance the different levels of contrast of a specimen

Phase contrast microscopy, Microscopy technique used to detect the different states of matter of a specimen

Fluorescence microscopy, use of fluorophore attached to sample for investigation

Transmission electron microscopy, uses beams of electrons to pass through a sample to then create an image

Scanning electron microscopy,  the surface of a sample is scanned with a beam of electrons to generate an image

X ray crystallography, determining a structure of a protein my using an x-ray technique

2D PAGE electrophoresis,  separation of proteins by two phases sizes and charges

NMR,  Nuclear magnetic resonance, spinning of all the nuclei and measurement of the energy that it gives off.

Mass spectrometry Protein sequencing technique based on weight

4 0
3 years ago
According to the text, adolescents are deficient in their intake of necessary vitamins and minerals because _____
klemol [59]

Answer:

healthy foods cost more.

unhealthy foods are more desirable.

they eat from vending machines in schools.

All of these answers are correct.

Explanation:

7 0
2 years ago
Vaccines​ don't provide immunity from disease for some people. But if most people get vaccinated against a​ disease, such as​ me
anyanavicka [17]

Answer:

B. true, because immunity is nonexcludable, and everyone can simultaneously enjoy the "herd immunity."

Explanation:

When a lot of people get vaccinated against a disease, the chances of spreading of that disease drastically decreases in the population. Even if someone is not vaccinated against that disease, their chances of contracting it are low because other people are vaccinated and hence its incidence rate in population is low. This phenomena is called as herd immunity. For example: 19 out of 20 people should be vaccinated against measles to protect the non vaccinated ones.

Herd immunity benefits the entire public and is considered a classic public good. It is nonexcludable which means that someone can not be excluded from being benefited by it. Two people residing in the same population will reap the benefits of herd immunity even if the degree of benefit might be different.

3 0
4 years ago
pepsin is found in the stomach. Salivary amylase is found in the mouth. And arginase is found in the liver. What does the graph
EastWind [94]
The stomach breaks down food , so it has the most acidic substance
4 0
3 years ago
Read 2 more answers
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