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 does the structure help the Hemoglobin perform its function

Answers

Answer:

structure helps stabilize the position of the attached heme

which of the following statements is FALSE?
a. alleles are made when one original DNA strand experiences mutations that result in phenotypes that offer advantages
b. the DNA of two alleles must be almost identical. since the trait is the same. But the effect of the allele may be very different!
c. in humans, for every trait we can only have two alleles. but that trait can be controlled by many alleles. there are no limits on how many alleles can control a trait.
d. being diploid means that humans cannot mask the effects of recessive alleles. humans always show both alleles in their phenotypes and genotypes
e. if humans were diploid we would only have one allele per trait
Helpppp pleaseee

Answers

Answer:

d. being diploid means that humans cannot mask the effects of recessive alleles. humans always show both alleles in their phenotypes and genotypes

Explanation:

Being diploid means humans carry two sets of chromosomes. Since we have both dominant and recessive gene types, humans can mask the effect of recessive alleles since the dominant trait will be seen in the phenotype or genotype since it is a dominant gene. The effect of the recessive allele will show up only if both diploid genes are recessive.

How is mitosis different from binary fission?​

Answers

Answer:

B

Explanation:

because the main differnt berween bianary fission and mitosis is that bianary fission is a way ofbtge asexual type of reproduction in prokaryotes in which one organism divides to for two progency orhanisms while mitosis is a process in which a eukaryotic cell divides to form two daughter cells which are identical.

The condition of ketoacidosis is Select one: a. a potentially fatal buildup of acetoacetate or 3-hydroxybutyrate lowering blood pH. b. due to a lowered production of ketone bodies than is normal. c. the increase in pH of the cells due to ketone body production. d. only found when anaerobic catabolism of fat occurs.

Answers

Answer:

The correct answer is option A ( a potentially fatal buildup of acetoacetate or 3-hydroxybutyrate lowering blood pH.)

Explanation:

Ketoacidosis results in a type of body metabolic state where the urine concentrations are high in ketone bodies, such as acetoacetic acid , 3-hydroxybutyrate. Fatty acids are converted to ketone bodies, resulting in a very high level of ketone bodies which automatically lowers the blood pH.

Ketoacidosis is of different types, Diabetic ketoacidosis, alcoholic ketoacidosis, starvation ketoacidosis. They are all associated with the accumulation of ketone bodies within the bloodstream. The underlying disease  common with ketoacidosis is Diabetes.

Which set of structures can be found in many prokaryotic and eukaryotic cells? A.ribosomes,mitochondria and cell membrane B.cell wall,cell membrane,and ribosomes C.nucleus,mitochondria and cell wall D. nucleus,cell membrane,and cell wall

Answers

Answer:

A

Explanation:

prokaryotic and eukaryotic are present in plant so its answer is a

a hurricane comes through and causes beach erosion. which choice best represents the systems that are affected?
A. hydrosphere, atmosphere, geosphere
B.atmosphere, cryosphere, geosphere
C.hydrosphere, lithosphere, biosphere

Answers

C hydrosphere, lithosphere, biosphere

The enzyme joins
to synthesize a new
strand of DNA . DNA replication is called
, because each new DNA molecule is made up of one original and one new strand.

Answers

the enzymes joins to synthesize anew DNA

Explanation:

because each new DNA molecules is made of one good original new strand

Which of the following is NOT a function of proteins


structural support

enzymes

transport across the cell membrane

all of the above are functions of proteins

Answers

Answer:

all of the above

Explanation:

proteins make up the cell membrane, giving the cell structural support.

proteins act as enzymes and catalysts within the cell.

proteins aid in the transport of specific substances.

What are things governments can do to prevent more deaths?

Answers

Answer:

oh yeah and the answer is license for guns.

Explanation:

can i tell u this story about when i had a dump, so like i just ate chetos so my butt was on fire and their was some fish i saw and i dicided it looked good so i ate it.

Answer:

nothing

Explanation:

A topographic map is shown below. Six different points are labeled (A, B, C, D, E, and F). What is the change in elevation between Point E and Point F , to the nearest 1000 meters?

Answers

Answer:

9,000

Explanation:

Its 9000 because point E to B it takes 9000 meters to get in their destination

write a five sentence paragrgh explaining the cell cycle

Answers

Answer:

The cell cycle is a cycle of stages that cells pass through to allow them to divide and produce new cells. It is sometimes referred to as the “cell division cycle” for that reason.

New cells are born through the division of their “parent” cell, producing two “daughter” cells from one single “parent” cell.

Daughter cells start life small, containing only half of the parent cell’s cytoplasm and only one copy of the DNA that is the cell’s “blueprint” or “source code” for survival. In order to divide and produce “daughter cells” of their own, the newborn cells must grow and produce more copies of vital cellular machinery – including their DNA.

The two main parts of the cell cycle are mitosis and interphase.

Mitosis is the phase of cell division, during which a “parent cell” divides to create two “daughter cells.”

The longest part of the cell cycle is called “interphase” – the phase of growth and DNA replication between mitotic cell divisions.

Both mitosis and interphase are divided into smaller sub-phases which need to be executed in order for cell division, growth, and development to proceed smoothly. Here we will focus on interphase, as the phases of mitosis have been covered in our “Mitosis” article.

Interphase consists of at least three distinct stages during which the cell grows, produces new organelles, replicates its DNA, and finally divides.

Explanation:

from online, rephrase this use as reference

The chaparral biome is best characterized by
A) large, contiguous regions of shrubland
B) small regions interspersed with other biomes
C) large noncontiguous regions interspersed with other biomes
D) the animals dwelling in it
E) the plants that grow in it
Pls help ASAP !

Answers

Small regions interspersed with other biomes. It’s choice B. I hope this helps. Have a nice day.

what stages are part of the process that animals use to get their energy

Answers

The process in which oxygen and glucose undergo a complex series of chemical reactions inside cells, releasing energy. Fermentation: The process by which cells release energy by breaking down food molecules without using oxygen

1) A region of the country is rapidly growing in population, causing the demand for electricity to go up each year. As a result, a new source of electricity is needed. This particular region of the country has plenty of agriculture, rivers, and access to coal deposits underground. Which of the following would be the cheapest way for this region of the country to make electricity, have minimal impact on the environment, yet not add carbon dioxide to the atmosphere?






Group of answer choices


A)Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity


B)Use the coal deposits to generate electricity in a few coal fired facilities


C)Build a nuclear power plant in the middle of the region


D)Build dams along the rivers to generate electricity



2)The image provided shows a partial river food web.




The local town relies on this river ecosystem to sustain their population both economically and as a source of food. Using the food web provided, which statement provides the best reasoning for regulating the amount of fish removed from the river by humans.


Group of answer choices


A)Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.


B)Regulation will increase the amount of energy transferred from the catfish to the eagle.


C)Regulation will allow contaminated sediments to decrease in the river due the removal of the contamination source.


D)Regulation will ensure that carp will not overpopulate the ecosystem and begin to consume larger organisms like the salmon.

Answers

Answer:

1- D

2- A

Explanation:

1- Water and electricity is the best option to decrease carbon footprint.

2- not sure

What attraction holds the nitrogenous bases together within the double helix?
a
deoxyribonucleic acid
b
ribose sugar
c
hydrogen bonds
d
phosphate

Answers

Hydrogen bonds , ddddddd

1. How would you describe the biosphere?
2. What are some ways we, as humans, affect the biosphere?

Answers

Answer:

1. The Biosphere is a life-supporting stratum of Earth's surface, extending from a few Km into the atmosphere all the way to the deep-sea vents of the ocean. The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients

2. Humans burning fossil fuels and growing animal agriculture has led to large amounts of greenhouse gases (such as carbon dioxide and methane) in the atmosphere. Higher concentrations of greenhouse gases trap more heat in the biosphere and result in global warming. Humans have caused threats to non-renewable resources, CO2 production& global warming, as well as over-competition for food between native and introduced species.

Describe the four levels of protein structure. For each level, include: the name of that level of structure how the protein is arranged at that point in time Answer using 4 to 5 complete sentences.

Answers

here are the structures i hope it helps

Answer:

primary, secondary, tertiary, and quaternary.

Explanation:

four levels of protein

1. primary structure of a protein: this is the number and sequence of amino acids held together by the peptide bond in a polypeptide chain.

2. secondary structure of a protein: this described the interaction of the sequence of amino acids in a polypeptide chain, and the bond formed is hydrogen bond.

3. tertiary structure of a protein this is a 3 dimension structure of a protein in the polypeptide chain and the bond formed are hydrogen bond, ionic bond and disulfide bond.

4. quartenary structure of a protein this is a combination of more than one structure which is primary structure, secondary structure and tertiary structure. bond formed are disulfide bond and so on.

What are the parts of a microscope show picture

Answers

Answer:

think it help you if it work mark as brainliest

Answer:

That's the correct answer.

Many shark species have experienced a great deal of decline in population sizes due to a variety of factors. In the Bahamas, sharks are plentiful, but still experience a decline as populations reach their carrying capacity. Which of the following factors does not affect the carrying capacity of all shark species?

Answers

Answer:

You didnt list the factors? comment the factors and ill come back to answer

What is the relationship between genes DNA and proteins

Answers

Answer:

Although you might have heard people talk about a gene for red hair, green eyes or other characteristics, it's important to remember that genes code for proteins, not traits. While your genetic makeup does indeed determine physical traits like eye color, hair color and so forth, your genes affect these traits indirectly by way of the proteins created via DNA.

Hopefully, this answer helped! :D

Answer:

Most genes contain the information require to make proteins. The type of RNA that contains the information needed to make protein is called a messenger RNA or mRNA and it carries the message from the DNA out of the nucleus into the cytoplasm

Explanation:

energy transfer through molecule to molecule contact is called?

Answers

Answer:

It's called conduction

Explanation:

The readiness to acquire a certain kind of conditioned response due to the biological makeup of the organism is known as _________.

Answers

Answer:

Biological Preparedness

Explanation:

I majored in Biology

1) during photosynthesis..... from the carbon dioxide is made of glucose
2) during...... glucose is broken down for it's energy and carbon dioxide released as ...
3) .... is the process that bacteria use to cause the decay of death organisms ​

Answers

Answer:Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. This glucose can be converted into pyruvate which releases adenosine triphosphate (ATP) by cellular respiration. Oxygen is also formed.

Explanation:

why is the plant cell found in the leaves???​

Answers

Answer:

That's where they get their photosynthesis, using the chloroplasts.

Explanation:

What would be a probable explanation for why there are many endemic plants and birds in New Zealand, but no native mammals?

Answers

Answer:

Due to isolated before mammals evolve.

Explanation:

There are many endemic plants and birds in New Zealand, but no native mammals because New Zealand is an island which isolated from Gondwana which is a supercontinent about 85 million years ago. Before mammals evolved, the New Zealand splits and go away from the Gondwana. So due to water only those mammals that can swim or fly colonized in New Zealand but not the land living mammals.


1. This is a glucose molecule, the sugar made in photosynthesis. Saccharides, or sugars, are
the building blocks for carbohydrates. What is another term for “building block?"

Answers

another term would be a monomer which link together to form polymers

define logical operator

Answers

Answer:

logical operator is a symbol or word used to connect two or more expressions such that the value of the compound expression produced depends only on that of the original expressions and on the meaning of the operator.

Answer:

A logical operator is a symbol or word used to connect two or more expressions such that the value of the compound expression produced depends only on that of the original expressions and on the meaning of the operator. Common logical operators include AND, OR, and NOT.

Explanation:

Heather was someone who loved to be on stage, and she sought any attention she could get. She was seductive and manipulative to others in her life, even though she was insecure in her relationships. What personality disorder diagnosis does Heather's symptoms MOST likely match?

Answers

Answer:

Borderline personality disorder.

Explanation:

It is borderline personality disorder because a borderline personality disorder is a mental disorder that is characterized by insecurity, unstable moods, relationships and manipulation behaviors. The major symptoms are feelings if insecurity, emotional instability, disrupted social relationships.

Treatment if this include talk therapy like cognitive therapy,medication and admission into the hospital if the condition is severe.

Are Cnidarians a Representative organism?

Answers

Answer:

No

Explanation:

Cnidarians refer to organisms found in the phylum Cnidaria/coelenterata. They're metazoans.. A representative organism of this phylum is hydra

what can a stars color indicate about its properties

Answers

Answer:

A star's color indicates it's temperature, composition and relative distance from earth

Explanation:

I hope this helps, have a good day

Answer:

A star can be defined by five basic characteristics: brightness, color, surface temperature, size and mass.

Brightness. Two characteristics define brightness: luminosity and magnitude. ...

Color. A star's color depends on its surface temperature. ...

Surface Temperature. ...

Size. ...

Mass

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