Over 400 years ago, the bark of the cinchona tree was discovered to contain a chemical compound called quinine. Quinine was, and still is, used to cure and prevent malaria. This is an early example of ____________________.

a. biotechnology

b. scientific modeling

c. genetic engineering

d. genomics

Answers

Answer 1

Answer:

A.

Explanation:


Related Questions

Which of the following experimental approaches is least likely to be used in identifying transcription factor binding sites?
a. Electrophoretic-mobility shift assay
b. Northern blotting
c. DNA footprinting
d. Chromatin immunoprecipitation

Answers

Northern blotting is the least likely to be used in identifying transcription factor binding sites. Therefore, option "B" is correct. Northern blotting is used for the analysis of RNA in the given sample. The samples can be tissue, blood, and serum.

The RNA is purified from the given sample. The sample might contain fragmented RNA which is purified and amplified. The target RNA is separated by using an electric current. The RNA moved through the gel which act like a sieve-like matrix. The movement of the fragments depends on the size of the fragments. Smaller fragments move faster than larger ones in Northern blotting.

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Which is characteristic of the sympathetic division of the autonomic nervous system?
a]stimulates digestion

b]dilates the bronchi

c]slows the heart rate

d]converts glucose to glycogen

Answers

i’m not certain but i’m like 80% sure it’s C-slows the heart down

Look at the chart below to answer this question. Which substance is the LEAST dense of the three substances?
Substance A
Substance B
Substance C

Answers

Answer:

Substance B

Explaination: Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float. Density is a characteristic property of a substance and doesn’t depend on the amount of substance.

ASAP!! HELP ME WITH THESE pls :(

Question 1.Which moon phase starts and ends in the moon cycle?

Question 2 : How many days between each moon phase ?

Answers

Answer:

1. new moon

2. seven

Explanation:

:)

Answer:

there are 4 important phase. full moon is the first phase and new moon is what it ends.

it takes 27days between each moon phase

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What property of silver may discourage people from buying silver jewelry?

A. it can’t float
B. it’s not green
C. it can tarnish
D. it’s not transparent

Answers

Answer: C

Explanation: Because if silver is tarnished it will lose its luster, thus making it not attractive.

C! Hope this helped!

according to tinbergen, if you are examining a trait in order to determine how it contributes to the survival and reproduction of an organism, what are you studying?

Answers

According to Tinbergen, if you are examining a trait to determine how it contributes to the survival and reproduction of an organism, you are studying the trait's adaptive value or fitness.

Niko Tinbergen was a renowned ethologist who proposed four questions to understand behavior in animals, including the study of traits. One of these questions pertains to the adaptive value or fitness of a trait, which focuses on how the trait affects the survival and reproduction of an organism.

By examining the trait's contribution to an organism's ability to survive in its environment and successfully reproduce, researchers can gain insights into the evolutionary significance of the trait. This approach helps in understanding the selective pressures that have shaped the trait over time, as traits that enhance survival and reproduction are more likely to be favored by natural selection.

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Scientific developments have made forensic science a stronger discipline.

True
False

Answers

Answer:

Answer of this qurstion is true

This question is true

Why are antibiotics unhelpful for treating the common cold?
A. Colds are caused by bacteria.
• B. Antibiotics attack only bacteria.
• C. Antibiotics cannot treat disease.
D. Colds are caused by antibiotics.

Answers

B. Antibiotics attack only bacteria.

4.
What is the salinity of seawater?
1.5 percent
3.5 percent
10 percent
5.5 percent

Answers

Answer:

I think the answer is 3.5%

Explanation:

35 parts per thousand of seawater contains salt therefore your answer is 3.5

A species that lacks adaptation to a changing environment is more likely
to

Answers

Answer:

become extinct over time......

1. Which of these is NOT a characteristic of a biome?

A Regions that have the same plant communities
B Regions that have the same animal communities
C Small habitat such as a tree stump that contains its own ecosystem
D Large areas of the Earth that have similar climates and organisms

Answers

Small habitat such as a tree stump that contains its own ecosystem is not a characteristic of biome.

What is a biome?

A biome is a large geographic region on Earth that is characterized by a specific set of climatic and environmental conditions, as well as a distinctive community of plants and animals. Biomes are defined by their dominant vegetation, which is adapted to the specific climate and environmental factors of the region. There are several different types of biomes, including forests, grasslands, tundra, deserts, and aquatic biomes such as oceans and freshwater ecosystems. Biomes are important for maintaining biodiversity and ecological balance, and are also valuable for human use, providing resources such as timber, food, and water. The study of biomes is an important aspect of ecology, and helps us understand how living organisms interact with their environment.

Which of these is not a characteristic of a biome?

c) Small habitat such as a tree stump that contains its own ecosystem. The other options are all characteristics of a biome. Biomes are large areas of the Earth that have similar climates and organisms, and are characterized by the same plant and animal communities. Biomes are typically defined by their predominant vegetation type and are classified based on factors such as temperature, precipitation, and soil type. Therefore, option C is the correct answer.

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Fears of malpractice lawsuits are playing a part in the increased use of expensive diagnostic equipment. T F

Answers

Answer:

True.

Explanation:

True, Fears of malpractice lawsuits are playing a part in the increased use of expensive diagnostic equipment.

Hope this helps!

the growth of plant seedlings is usually
A.phototropic and gravitropic
B.thigmotropic and gravitropic
C.phototropic and influenced by ethylene
D.gravitropic and influenced by ethylene

Answers

Answer:

The correct answer is - A. phototropic and gravitropic.

Explanation:

A plant seedling grows usually two-direction shoots or stems towards light and roots towards the soil or in the direction of gravity. The movement of the plant toward a specific stimulus or effect parts is called tropism and different parts move in a different direction.

The movement of the roots of the plant is usually towards the direction of soil or gravity and this is called gravitropic. The shoot or stem grows from the seedling towards the direction of light and it is called phototropic.

identity the function of the cell membrane. what is the function of the cell membrane? please explain​

Answers

the function of the cell membrane is to provide protection for the cell. it also transports nutrients into the cell and also transports toxic substances out of the cell.
Simply: it lets things in and out of the cell it may also be helpful to remember that it has 2 layers

Referring to the illustration below, answer the following questions:
a. What process is represented here?
b. How do you know? (Give two reasons.)
c. Is the parent cell a somatic cell or a gamete? (Think before writing your answer!)
d. What is the end result of this process?
e. How similar or different are the daughter cells from one another? If they are different, explain why.

Answers

The genetic material in each daughter cell is identical to that in the parent cell, and the process of mitosis ensures that each daughter cell receives a copy of each chromosome.

a. The process represented here is cell division. b. The reasons why this process is cell division are:
1. The parent cell is dividing into two daughter cells.
2. The daughter cells are genetically identical to each other. c. The parent cell is a somatic cell. It is not a gamete because gametes are produced by meiosis, not mitosis. d. The end result of this process is two genetically identical daughter cells. e. The daughter cells are genetically identical to each other. They are the same because they are produced by mitosis, which involves only one round of cell division and results in two daughter cells that are genetically identical to each other. The genetic material in each daughter cell is identical to that in the parent cell, and the process of mitosis ensures that each daughter cell receives a copy of each chromosome.

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What type of graph is used for a PH test

Answers

Explain why a line graph is used for the pH data. Line graphs are utilized when data is continuous. It’s either a line graph or bar graph but usually line graph

When a population is split into smaller groups, why do these groups develop different traits?
A. Traits that form in one group form evolutionary forces quickly spread through populations
B. Separating the two groups decreases the chance that the two groups will diverge
C. Gene flow is increased in the two subgroups that are formed
D. Forces like natural selection and genetic drift affect the genes of the two subgroups differently

Answers

If I was to guess, It would be D.............

ANSWER QUICK PLZ

The photo shows several Volvox, one of the simplest multicellular living things. Volvox have no tissues.

What other three things do Volvox also likely lack?

Answers

Answer:

A, B, D.

Explanation:

explain how inbreeding dogs for good or perfect trait also produces bad or disease traits as well

Answers

Answer:

Inbreeding can cause a weaker dog from inbreeding it will not be as immune to stuff that non inbreed dogs would be if that makes since.

Explanation:

I know this cuz my gramps shows and breeds dogs and i breed goats. If you don't get it tell me in the comments.

Inbreeding depression can  produces bad or disease traits as well.

Inbreeding between two closely related species can result in the expression of lethal recessive allele which are otherwise masked by dominant allele.These recessive gene allele can code for certain diseases which are otherwise eliminated by outbreeding.What is inbreeding depression?It is the reduced survival and fertility of offspring of related individual.It is often the result of population bottleneck.

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PS: PLEASE DO NOT PUT A LINK I AM NOT GOING TO OPEN THE LINK IN THE ANSWER SECTION!!
what are the improvements in human society that have allowed the human population to increase in size exponentially? (choose all that apply)

a. agriculture
b. cleanliness
c. industry
d. medicine

Answers

Answer:

medicine................

Answer:

a. agriculture

b.cleanliness

d. medicine

Explanation:

took the test! :)

A male peacock's tail is an adaptation to increase his chances of

A)survival

B)finding food

C)getting a mate

D)standing out in a crowd

Answers

Answer:

D

Explanation:

That is a form of copulatory behaviour in peacocks

Answer:

C) getting a mate

Explanation:

A male peacock's tail is a adaptation to attract other peacocks

Even more Explanation:

I took the USA TEST PREP assignment and got it correct. the answer below or above me is wrong. trust me

PLSS HELP

What is NOT an adaptation that pioneer species need? *
A. ability to do photosynthesis

B. live without soil

C. the ability to grow tall

D. tiny roots to break down rock

Answers

Explanation:

Primary succession, type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat. Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community. This community becomes more complex as new species arrive. Primary succession is distinguished from secondary succession, which is the recovery of an existing biological community after a disturbance sets back the community’s ecological structure to an earlier stage.

When a small square is sectioned off for study and the plants, animals, and other organisms in that section are counted, the study is called a:______

Answers

When a small square is sectioned off for study and the plants, animals, and other organisms in that section are counted, the study is called a quadrat sampling.

Quadrat sampling is also referred to as quadrat study. In ecological research, it is a method used to determine the number or density of organisms in a certain specific area.

It involves dividing the study area into smaller, equally sized plots or squares called quadrats. The size of the quadrat depends on the organisms being studied and the scale of the research.

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What part of the bacteriophage attaches and anchors itself to the bacteria?

Answers

Answer: Proteins in the "tail" of the phage bind to a specific receptor (in this case, a sugar transporter) on the surface of the bacterial cell. Entry: The phage injects its double-stranded DNA genome into the cytoplasm of the bacterium.

Explanation:

Which adaptation is most likely found in tropical trees?

Answers

Answer:

birds and squirrels

Explanation:

Answer:

The leaves of forest trees have adapted to cope with high rainfall. Many tropical rainforest leaves have a drip tip. It is thought that these drip tips enable rain drops to run off quickly.

Hope this helped!!!

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.
Make a Punnett Square for two smooth seed hybrid pea plants (Ss)

Click once to select an item at the bottom of the problem.
Click again to drop the item in its correct place.

Answers

Answer:

Explanation:

(blank) (S)   (s)

    (S)  (SS) (Ss)

    (s)   (Ss)  (ss)

hi please help i’ll give brainliest

Answers

Answer:

C the moom rotates around itself slower than eath rotates around itself

Explanation:

The ___the contour lines are
together the steeper the slope.

The steeper the slope, the ___ stream's velocity.

Answers

Answer:

hi

Explanation:

The primers you used in lab amplified 145 base pairs that were adjacent, but not included in the repeat. If you used a different primer that only amplified 130 base pairs adjacent to a 14 base pair repeat, and you had 4 repeats in your product, what was the size of your final PCR product?

186

214

158

200

172

Answers

Answer:

186

Explanation:

The Polymerase Chain Reaction (PCR) is a technique used in molecular biology to amplify small segments of DNA. This technique uses a pair of oligonucleotide sequences called 'primers' which bind to opposite strands of the heat-denatured DNA template in order to amplify this target DNA sequence. In this case, the DNA template is composed of a single unit of 130 base pairs (bp) and four repetitive units of 14 bp, so the final PCR product will have 186 bp >>> 130  bp + (14 bp x 4) = 130 + 56 = 186.

Eutrophication is caused by ___


A. Erosion
B. Pollution
C. High winds
D. Ultraviolet rays

Answers

The answer will be erosion
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