How the
immune system works, explain why injecting an
antigen from a pathogen would help our immune
system create "memory" of the infection but not
cause the disease.
Answer:
Our immune system produces antibodies against that antigen of pathogen.
Explanation:
Injecting an antigen from a pathogen would help our immune system memorize the infection and protect our body from causing of the disease because our immune system produces antibodies against that antigen so when the pathogen enters our body these antibodies attack on that and prevent them of causing infection in the body so that's why injecting an antigen has to be done from the childhood to prevent diseases.
Use the following terms: Natural Selection, Variation, Mutation, Adaptation, Overproduction, Descent with Modification, Evolution, Population, Species, Heritability, and Fitness and show the relationship between them that lead to the result, Evolution.
Answer:
Variations in species led to evolution. Some species have desirable traits that are beneficial to their survival. Some species have undesirable traits that are not beneficial to their survival. E.g. peppered moths are not easily seen by predators because they camouflage with the bark, black moths are easily seen by predators so they are eaten. In the example mentioned, the peppered moths have a beneficial trait, this is also known as fitness, because the organism is fit for survival, unlike the black moths. Overtime the population of black moths decreases because they are not fit for survival, therefore the black moths cannot reproduce offspring that also have black wings. However, the population of peppered moths increases, because the peppered moths are able to reproduce offspring. Those offspring inherit their parents' traits, which make them have peppered wings too.
Explain a situation in which a cell would need to use an input of energy to
transport materials across the cell membrane.
How many anatomical characteristics do Cetaceans share with Mammals?
Answer:
Anatomy suggests that Cetaceans are more closely related to mammals than fish since they share more similarities with the mammals, such as a 4-chambered heart and lungs. What does anatomy say about the ancestry of Cetaceans?
Explanation:
Hope it helps! Correct me if I am wrong :>
Anatomy suggests that Cetaceans more closely resemble mammals. Cetaceans have a 4-chambered heart, lungs to breathe, giving birth to young ones, mammary glands, endothermic, etc.
What are Cetaceans?Cetaceans can be called aquatic mammals and it includes whales, dolphins, etc.
These are one of the most distinctive and highly specialized orders of mammals.
They are more likely to have anatomical characteristics of mammals than fish. As they have a 4-chambered heart, are endothermic, give birth to young ones, and have mammary glands, these are considered under mammals.
Thus, these are the characteristics that Cetaceans share with mammals.
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We learned that Robert Hooke named cells from the Latin, cella, which means "small room". Do you think Mr. Hooke was observing plant or animals cells when he named them? How do you know?
Answer:
Plant cells
Explanation:
Visually, plant cells are more rectangular and organized as compared to animal cells which are more diverse in shape. I hope this can help you!
If a widow’s peak (W) is controlled by a dominant allele and a straight hairline (w) is controlled by a recessive allele, how would you describe a person whose genotype is Ww?
Answer:
The correct answer is - a heterozygous individual with widow's peak.
Explanation:
In the given case, the dominant character is the widow's peak that is represented by the allele W and the straight hairline is a recessive character represented by the allele w. So, if an individual has both dominant alleles WW it means this individual has widows peek as W is the dominant allele and if this individual has ww allele it means the straight is expressed as no dominant allele to mask the effect of recessive allele w.
In the case of heterozygous that means one copy of dominant and one copy of recessive allele is present that is Ww then this individual have a widow's peak due to the fact that dominant allele will mask the effect of recessive allele.
Original strand
A-T-C-C-G-A-T-A
Matching strand
____________
Answer:
T-A-G-G-C-T-A-T
Explanation:
Remember, A and T make matching strands and G and C make matching strands.
How does population growth differ between developing countries and developed countries? What might account for these differences?
Answer:
Developing countries have a low life expectancy because things like water might be populated/scarce, the air may be polluted and immunisation might not be possible. But developed countries are more likely to have safe drinking water, and vaccines.
In which type of symbiotic relationship does one organism benefit and the other is neither helped nor harmed?
A. Competition
B. Commensalism
C. Mutualism
D. Parasitism
Answer:
Commensalism
Explanation:
Mutualism- both benefit
Parasitism- One benefits, the other is harmed
Competion- fite
Answer:
commensalism
Explanation:
just did the test
Which person is least likely to be concerned about potential long-term side
effects of genetically modified (GM) food?
A. A wealthy mother
B. The owner of an organic farm
C. A biology researcher
D. A child who is starving
Please help on this one
Answer:
A. Class
Explanation:
As you look at Animal l column and Animal V column you can see their first difference appears in the class row.
According to this theory, how did mitochondria evolve?
Answer: Mitochondria evolved from endosymbiotic prokaryotes that were able to use oxygen to generate energy rich ATP. To prokaryotes then evolved into mitochondria that now power the cells of all multicellular organisms.
Explanation:
Answer:
According to this theory mitochondria evolved from bacteria and somehow became incorporated into the cytoplasm.
Explanation:
i don't know which theory ur talking about but this theory is the endosymbiotic theory
Think of an object, person place at home that functions similar to the cytoplasm .
Help please and thank you
What is the cellular system
Answer:
A cellphone network. Often spanning an entire country, a cellular system comprises a core network that connects to base stations with antennas on towers that span up to 20 miles in diameter. GSM and CDMA are the two major cellular technologies.
Explanation:
Answer:
Often spanning an entire country, a cellular system comprises a core network that connects to base stations with antennas on towers that span up to 20 miles in diameter. GSM and CDMA are the two major cellular technologies. See cellphone, cellular generations, GSM, CDMA and microcell.
Explanation:
got it from goo gle
Define the following :
-self-concept
-self motivation
-volunteer
-self-image
-Adolescents
Answer:
Self-concept is the set of ideas that make up the image that each person has about himself, that is, it is the opinion that an individual forges about himself. That sentence carries a certain value judgment. Self-concept: set of elements that a person uses to describe himself. Self-motivation is giving the reasons, the drive, the enthusiasm and the interest that provoke a specific action or a certain behavior. Volunteer is the person who, by his own choice, dedicates part of a part of his time to solidary, altruistic action, without receiving remuneration in return. The stage that comes after childhood and that ranges from puberty to the full development of the body is known as adolescence. Self-image is the value we have in relation to ourselves.
Explanation:
Self-concept: set of elements that a person uses to describe himself. The ability to motivate yourself is what is known as self-motivation. This is an important skill, as it encourages people to continue progressing even in the face of setbacks, to seize opportunities and to show commitment to what they want to achieve. Volunteer is that person who joins an organization in a free way to help altruistically in various social activities. When we speak of self-image we refer to the image that our subconscious has of ourselves. Adolescence is understood as the period of human development after childhood and before adulthood, in which the biological, sexual, social and psychological changes necessary to form a socially mature individual and physically prepared for reproduction take place.
Margaret tells her friends that she caught a fish called Salmo salar. What genus does the fish belong to? Explain how you know.
Answer:
Histrio?
Explanation:
Select the correct answer.
Read the excerpt from a speech that British Prime Minister Winston Churchill made shortly
Churchill's intention with this part of the speech?
This is a strange Christmas Eve. Almost the whole world is locked in deadly struggle, ar
science can devise, the nations advance upon each other. Ill would it be for us this Chr
the land or wealth of any other people, no vulgar ambition, no morbid lust for materia
the field. Here, in the midst of war, raging and roaring over all the lands and seas, cree
amid all the tumult, we have tonight the peace of the spirit in each cottage home and
aside for this night at least the cares and dangers which beset us, and make for the ch
storm. Here, then, for one night only, each home throughout the English-speaking wor
happiness and peace.
A
to remind people about the evils surrounding them
B.
to promote happiness and peace during the Christmas season
to encourage more support for the war
D.
to push for the United States and Britain to become one country
Learning Task 5: Write at least five benefits derived from planting trees
and fruit bearing trees to families and communities.
1________________
2_________________
3__________________
4____________________
5_____________________
The energy in molecules has been stored in the
1.protons
2.Bonds
3.electrons
4.neutrons
Answer:
It should be 2- Bonds
Explanation:
Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules.
:)
Question 1 (5 points)
The energy driving Earth's systems comes from two sources: heat from the sun and heat flowing out of the moon as it cools at night.
True
False
Question 2 (5 points)
a
The number of fossils would decrease as the layers accumulate.
b
The types of fossils would be similar but would show gradual structural changes.
c
The number of fossils would rise and then immediately disappear.
d
The types of fossils would stay exactly the same in every layer.
Question 3 (5 points)
True or False: A system is a group of parts that work together as a whole.
True
False
Question 4 (5 points)
a
b
c
d
Question 5 (5 points)
This is the principle of _________________ which includes natural processes of all different rates, from abrupt and extreme to barely detectable and very slow.
a
Catastrophism
b
Uniformitarianism
c
Gradualism
d
Biosphere
Question 6 (5 points)
Oceans cover more than ____________of the Earth's surface, making the oceans the largest part of the hydrosphere.
a
40%
b
50
c
60%
d
70%
Question 7 (4 points)
Earth's atmosphere is a mixture of gases, primarily _____________ and ________________.
a
Oxygen and Hydrogen
b
Nitrogen and Hydrogen
c
Nitrogen and Oxygen
d
Oxygen and Helium
Question 8 (5 points)
a
b
c
d
Question 9 (10 points)
Read the questions below and match the correct answer.
Column A
1.
what is called the thin layer of air extending from the surface of the Earth to space.:
what is called the thin layer of air extending from the surface of the Earth to space.
2.
This part of the system consists of all of the water on a planet.:
This part of the system consists of all of the water on a planet.
3.
This is the part of the Earth system that includes rocks, minerals, and landforms on the surface, as well as the molten rock and metals in the planet's interior.:
This is the part of the Earth system that includes rocks, minerals, and landforms on the surface, as well as the molten rock and metals in the planet's interior.
4.
This system consists of the regions of the atmosphere, geosphere, and hydrosphere that are that are occupied by living organisms.:
This system consists of the regions of the atmosphere, geosphere, and hydrosphere that are that are occupied by living organisms.
Column B
a.Bioshpere
b.Geosphere
c.Hydrosphere
d.Atmosphere
Question 10 (4 points)
Numerical Weather Prediction (NWP), atmospheric data from many sources are plugged into supercomputers running complex mathematical models.
True
False
Question 11 (5 points)
The Earth system involves a constant flow of matter through different parts. The flow of matter is caused by _____________________.
a
Energy
b
Resources
c
Gravity
d
Inertia
Question 12 (5 points)
In this image you can see how _______________ has slowly carved away at the mountains.
a
Volcanoes
b
Wind Erosion
c
Storm Erosion
d
Acid Rain
Question 13 (5 points)
Geologic change on Earth's surface may occur suddenly as the result of events, such as an explosive volcanic eruption, an earthquake, or a landslide.
a
Catastrophism
b
Uniformitarianism
c
Experimentation
d
Gradualism
Question 14 (4 points)
Landforms are created and destroyed by competing forces.
True
False
Question 15 (4 points)
Word Bank: Competing Forces, Deposited Sediment, Destructive Forces, Constructive Forces,
1. Landforms are created and destroyed by
2. Physical features on Earth’s surface are caused to grow by
3. This force wears down landforms
4. This can cause landforms to grow
Blank 1:
Blank 2:
Blank 3:
Blank 4:
Question 16 (5 points)
The processes of ___________ and erosion work over time to change once high mountains into smooth, flat plateaus.
a
Climate Change
b
Weathering
c
Gravitational Pull
Question 17 (5 points)
This image below is an example of _________________.
a
A Solar Eclipse striking Earth
b
A UFO striking Earth
c
A comet striking Earth
d
A meteorite striking Earth
Question 18 (4 points)
Weather prediction is extremely valuable for reducing property damage and even fatalities.
True
False
Question 19 (5 points)
Column A
1.
A:
A
2.
B:
B
3.
C:
C
4.
D:
D
Column B
a.Inner Core
b.Outer Core
c.Mantle
d.Crust
Question 20 (5 points)
View the gif below and answer the question.
What process does this gif best represent?
a
Seafloor spreading
b
Convection cycles in the mantle
c
Radiation in the mantle
d
Conduction cycles in the mantle
Answer:
the answer will be False
Original DNA strand: ATT TGA GCC
Mutated DNA strand: ATT TGA GAC C
HELP! Information from dna is transcripted into__
Answer:
1) MRNA
2) Triplet code
3) Amino acid
4) protein
HELP PLEASE IM BEGGING YOU
Answer:
You have the right answer, its B.
Explanation:
HELP DUE IN 10 MINS!
Plants gather the sun’s energy with light-absorbing molecules called------such as ------
a. Chloroplasts, chlorophyll
b. Pigments, chlorophyll
c. Thylakoids, grana
Answer:
It's B; Pigments and Chlorophyll.
Hope you pass your assignment!
Answer:
b . pigments, chlorophyllWhat is the complementary sequence of DNA to this DNA strand?
Original DNA Strand: TGACGGTA
C matches with G and A matches with T, so:
TGACGGTA
matches with
ACTGCCAT
Answer:
ACTGCCAT
Explanation:
complementary means you can form a double- stranded structure by matching base pairs.
In this case we have TGACGGTA and the matching pairs are ACTGCCAT.
Which of the following does not represent a condition required for natural selection to occur?
Which of these statements is true about internal respiration?
[a] Production of ATP
[b] Exchange of gases between the bloodstream and tissue cells
[c] Exchange of gases between alveoli and the bloodstream
[d] Breathing between the atmosphere and the alveoli
Answer:
c
Explanation:
because I don't know how to exam tho
Exchange of gases between alveoli and the bloodstream ( Option C )
Internal respiration is the process of exchanging gases ( i.e. carbon dioxide and oxygen ) between the bloodstream and the alveoli of an organism. as seen in human.
Internal respiration ( exchange of gases) occurs between Alveoli and the bloodstream. While External respiration occurs between the atmosphere and the alveoli.Also the Alveoli is important in both external and internal respiration. but for internal respiration, the alveoli exchanges gases with the bloodstream before it is passed to the internal issues .
Hence we can conclude that the true statement about internal respiration is ; Exchange of gases between the alveoli and the bloodstream.
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A woman gets sick with a bacterial infection and takes an antibiotic to kill the bacteria. A few of the bacteria survived and produced a population of bacteria that was resistant to the antibiotic. Which statement best describes how this happened? A. A species will adapt no matter what the environment B. The environment has no effect on the survival of an organism C. Antibiotics cause mutations in bacteria that are passed on to the next generation D. Only bacteria that already have favorable variations in their DNA survive the antibiotic and reproduce
Answer:
D is the answer
Explanation:
Chemicals used to kill insects and other pests that diminish crop yields are called
A) asbestos
B) pesticides
C) carbon sinks
D) myrmecophytes
E) carcinogens
Answer:
B) Pesticides
Explanation: