Which of the following is an example of specific immunity?

Answers

Answer 1

Answer:

Immunity to Small Pox

Explanation:

Over the years, Europeans had built up an immunity to smallpox because many had contracted the disease and still survived. As the population grew children were born with some immunity to the disease. When the Europeans arrived in the Americas, and smallpox spread around the native peoples, the Europeans did not contract the disease because they were immune. However, since the natives were not immune, they slowly died of due just to the disease as well as some parts of the war between the europeans.


Related Questions

how can elevation greatly affect an ecosystem

Answers

Answer:

Elevation may affect the type and amount of sunlight that plants receive, the amount of water that plants can absorb and the nutrients that are available in the soil. As a result, certain plants grow very well in high elevations, whereas others can only grow in middle or lower elevations.

Explanation:

Changes in the direction of Earth’s axis and changes in the angle at which it tilts
affect the severity of

Answers

Answer:

Ice Ages

Explanation:

What do xylem vessels carry?

Answers

Answer:

xylem vessels carry water and minerals and some

ions also

Answer:

The xylem transports water and minerals from the roots up the plant stem and into the leaves.

Explanation:

In a mature flowering plant or tree, most of the cells that make up the xylem are specialized cells called vessels.

Macromolecules that contain chonp are called what

Answers

Answer:

Proteins are made of carbon, hydrogen, oxygen, and nitrogen (CHON). Nucleic acids such as DNA and RNA contain carbon, hydrogen, oxygen, nitrogen, and phosphorus (CHON P).

Explanation:

how many atp are produced by cellular respiration of one molecule of glucose?

Answers

Answer:

38 ATP.

Explanation:

Biology textbooks often state that 38 ATP molecules can be made per oxidized glucose molecule during cellular respiration (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).

=

QUESTION
Which of the following is true about
meiosis?
A. Meiosis makes haploid cells
B. Meiosis makes somatic cells
C. Meiosis makes identical cells
D. Meiosis makes 2 daughter cells

Answers

Its letter D or letter C meiosis does make identical daughter cells

3. The suffix -ose means sugar. Is glucose a simple or complex
sugar/carbohydrate?

Answers

Answer:sugar

Explanation:

Answer: Technically both

Explanation:

Complex carbohydrates are found in foods such as peas, beans, whole grains, and vegetables. Both simple and complex carbohydrates are turned to glucose (blood sugar) in the body and are used as energy. Glucose is used in the cells of the body and in the brain.

at which point in its orbit is a planet traveling fastest?
a) moving towards a star
b) moving away from a star

Answers

Answer:

Moving towards a star

Explanation: As you see Mercury has the fastest orbit then any other planet in our solar system because it is closer towards our sun.


Which characteristic can be shared by all types of cells? (this includes
bacteria, animal, and plant cells)

Answers

Answer:

All cells have some type of membrane or outer layer that protects them.

Grass starts with 30,000 kcal of energy. A cheetah would acquire
kcal of energy after it ate a zebra that had consumed the grass.

Answers

Answer:

300

Explanation:

Answer: 300 is the correct answer!!

What can fungi eat that other organisms can not?

Answers

fungi absorb nutrients from the environment around them, they cannot just simply eat an animal
Fungi are not able to ingest their food like animals do, nor can they manufacture their own food the way plants do. Instead, fungi feed by absorption of nutrients from the environment around them.

Science and technology are _____.

completely unrelated

dependent on each other

the same thing

not important

Answers

Answer:

dependent on each other

why is the understanding of classification an important lofe skill?​

Answers

Answer:

It helps in the identification of living organisms as well as in understanding the diversity of living organisms. To understand and study the features, similarities and differences between different living organisms and how they are grouped under different categories.

Answer:

Depending on What your classifying it can help you get a better social life and a good economic life, To classify is the same thing as identify so with that being said classification is one of many advantages of your life.

A golf cart changes velocity from 2m/s to 6m/s over a period of 2 seconds. What is the acceleration of the golf cart? \
A.
As voltage increases, current increases.

B.
As resistance increases, current increases.

C.
As voltage increases, resistance increases.

D.
All statements are correct according to the graph.

Answers

It is A as voltage increases, Current Increases

that Watson and crick are the only sciences who have contributed to our knowledge of DNA and its role true or false

Answers

Answer:true

Explanation:

Im probably wrong i just need points

What do muscle and bone cells have in common? What makes them function differently?
(55 points worth)

Answers

Answer:

Explanation: Bones form infrastructure of skeletal system while muscles help in movement by contraction and relaxation. Young bone cells secrete organic matrix of bony tissue. Myocytes do not secrete matrix.

Explanation:

Earth's layers are arranged by

Answers

Answer: they are arranged in order from the exterior to the interior

Explanation: :the crust, the mantle, the outer core, and the inner core

Answer:

the exterior to the interior – the crust, the mantle, the outer core, and the inner core.

Explanation:

I think that's right‍♀️

is oxygen biotic or abiotic

Answers

Answer:

abiotic

Explanation:

abiotic because it is not an alive factor in our ecosystem

All the genes, including all of the alleles for each gene, in a population are called
A.a genotype
B.allele frequency
C.a gene pool
D.genetic variation.​

Answers

I think it’s D but am not really sure

5) What are cones?

6) What kinds of plants make cones?

Answers

Answer: 5) Cone, also called strobilus, in botany, mass of scales or bracts, usually ovate in shape, containing the reproductive organs of certain nonflowering plants.

6) Nonflowering plants

Explanation:

When the concentration of molecules on both sides of a membrane is the same, the molecules will

Answers

The molecules will continue to move across the membrane in both directions

Hope this helps! ;)

in cellular respiration where is 90% of the energy stored?

Answers

Answer:

pyruvic acid

hope this helps

Explanation:

Pyruvic acid I think

As we know that the leaves of plants are waterproof due to cuticle. On the same way, take some pieces of paper of leaf size and make them waterproof. after completion, put half of these paper pieces in cold water and half in hot water. Do all the pieces of paper remains waterproof? Explain your observation and result with justifications

Answers

Answer:

its answer is:

No all the pieces of paper not remains waterproof. After making water into its pieces in the shape of leaves, it can't be able to defend water. As paper is non living thing and leave is part of living being so, paper is not waterproof but leaves is waterproof.

Which of the following stages of photosynthesis involves carbon fixation, reduction reactions, and the ribulose 1,5-bisphosphate regeneration? Olight-dependent reaction first stage photosynthesis Olight-independent reaction O photoreduction​

Answers

Answer:C4 carbon fixation: A form of photosynthesis in which plants concentrate CO2 ... Calvin cycle is organized into three basic stages: fixation, reduction, and regeneration. ... In fixation, the first stage of the Calvin cycle, light-independent reactions are ... the reaction between carbon dioxide and RuBP; ribulose bisphosphate: an ...

Explanation:

Answer:

c4 carbon fixiation

Explanation:

Which substances, released by glands, play an important role in communication between cells in a human?

Answers

Endocrine glands make chemicals called hormones and pass them straight into the bloodstream. Hormones can be thought of as chemical messages. From the blood stream, the hormones communicate with the body by heading towards their target cell to bring about a particular change or effect to that cell.Mar 30, 2014

Which of the cell components is least likely to affect the visible traits of an organism?

F Mitochondria
G Nucleus
H Genes
J Chromosomes

Answers

I think its Mitochondria, because mitochondria doesnt really have a major function when it comes to genes

Answer:

Genes

Explanation:

The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype.

Consider a major environmental change (like antibiotics entering a person's body). If there are not organisms in a population that have traits that allow them to still continue to survive to reproduce, what would likely happen to that population?

Answers

Answer:

The population (of the bacteria) will reduce

Explanation:

This question appear a little confusing because of the structure of the second sentence. However, it appears to describe how an antibiotic works. Antibiotics work against bacteria by either making the environment toxic for the bacteria (which kills it) or inhibiting the growth/reproduction of the bacteria. Both patterns will eventually lead a sharp reduction in the population of the bacteria. Even if what the antibiotic does is to inhibit the reproduction of the bacteria, this act provides the body with an opportunity to fight the "unreproductive" remnants of bacteria thereby leading to the reduction of population of the bacteria.

What is the role of RuBP? How is RuBP regenerated?

Answers

Answer: RUBP Regeneration refers to the cyclical process where the photosynthetic enzyme Rubisco fixes carbon dioxide into the sugars that fuel plant growth and productivity. Only one-sixth of the PGA carbon is converted to sugar—the rest of the carbon is used to recycle RuBP as the cycle continues.

Explanation:

What is the next phase of the carbon cycle for the carbon source labeled B? Label A shows a collection of coal, oil and gas. Label B shows a collection of trees and vegetation. Label C shows sky and open atmosphere. Condensation Transpiration Photosynthesis Decomposition

Answers

Answer:

Hi! so the answer is decomposition.

Explanation:

If you are looking at the graph and go to the carbon source labeled B and you look at the arrow to here soil organic matter points to you can see that it points to decomposition. Also because I took the test and got it correct. I hope you can mark me as brainleast. thank you :)

The next phase of the carbon cycle for the carbon source labeled B is known as decomposition. Thus, the correct option for this question is D.

What is the Carbon cycle?

The carbon cycle may be defined as a type of biogeochemical cycle through which carbon and other derivatives prodcts of its continually travel from the atmosphere to the Earth and then back into the atmosphere.

According to the graph, the source of carbon that plants and trees get from the soil is the action of decomposers. These microorganisms significantly convert the organic form of the source into an inorganic form which is then easily consumed by the plants for their metabolic process and growth.

Therefore, the next phase of the carbon cycle for the carbon source labeled B is known as decomposition. Thus, the correct option for this question is D.

To learn more about the Carbon cycle, refer to the link:

https://brainly.com/question/1194643

#SPJ5

Help meee pretty please

Answers

Answer:

what you need help with

Explanation:

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