Answer:
The third line of defense is specific resistance. This system relies on antigens, which are specific substances found in foreign microbes. Most antigens are proteins that serve as the stimulus to produce an immune response. ... The activation of T-cells by a specific antigen is called cell-mediated immunity.
Hope this helps out
Explanation:
A frog has more offspring than can survive on available resources.
Which behavior is this an example?
Answer:
B: overpopulation
Explanation:
I hope I helped
Come up with another myth about the classification of organisms. Then, give two to three reasons why the myth is untrue. Use complete sentences and support your answer with evidence, using your own words.
Your myth:
o Fact:
o Evidence:
Answer:
Myth: A dead organism is the same as a nonliving thing in science.
Fact: According to science when an organism dies it not different from a non-living thing
Evidence: Non-living things are fundamentally different than living organisms mainly because of the differences in their chemical and biological structures. Living things are made of biomolecules, complex polymers like lipids, proteins, and polysaccharides based on carbon and non-living things are usually made of minerals and other inorganic compounds. So, even if an organism is dead, we can determine that it was a living thing by analyzing its chemical structure.
Myth: The Linnaeus system of classification will always stay the same.
Fact: Carl Linnaeus, a Swedish scientist from the 18th century came up with the perfect classification system that is used up to this day unchanged.
Evidence: Although this system is still widely used to classify living organisms, it has gone through some changes. Linnaeus considered kingdoms to be the utmost level of classification, but biologists today recognize a level above kingdoms, the level of domains. Some scientists also argue that classifying organisms into kingdoms should be abandoned, because not all organisms traditionally divided into kingdoms have the same origin.
Organisms produce
____like themselves. *
Answer:
offspring's
Explanation:
the reason of life is to pass your genetic information into the next generation.
Which choice would be a molecule?
A.
O
B.
H2
C.
H
D.
Au
Answer:
B. H2 would be the correct answer.
Which body system releases heat through muscle contractions to maintain an optimal body temperature?
Answer:
Skeletal muscles
Explanation:
Skeletal muscles contribute to maintaining temperature homeostasis in the body by generating heat. Muscle contraction requires energy and produces heat as a byproduct of metabolism.
What gas in the air is used by plants to make their own food? (2 points)
O Water vapor
O Oxygen
O Carbon dioxide
Nitrogen
Answer:
Photosynthesis is the process by which plants make their own food. Plants use carbon dioxide.
and water vapor in the presence of sunlight to make their own food. This process is called photosynthesis. In this process, oxygen is released into the atmosphere.
your answer is C/3, Carbon dioxide.
What is the difference between sister chromatids and homologous chromosomes?
( WILL MARK BRAINLIEST PLEASE)
a. A chromosome can be split into homologous chromosomes; the sister chromatids are identical copied forms of a chromosome
b. Sister chromatids are found in somatic cells, while homologous chromosomes are found in gametes
c. Sister chromatids are a pair of chromosomes inherited from each parent, while homologous chromosomes are the two parts of a chromosome
d. Sister chromatids are the two parts of chromosome, while homologous chromosomes are a pair of chromosomes inherited from each parent
Answer:
A
Explanation:
A sister chromatid refers to the identical copies
A couple of homologous chromosomes, or homologs, are a set of one maternal and one paternal chromosome that pair up with each other inside a cell during fertilization
can you kill a flamingo with only one finger
Answer:
NNNNNOOOO...........
5. In Genetic Drift Beetles, the genetic drift event reduces the beetle population size to two beetles at random. Once the beetle population is smaller, which force of evolution takes over to cause changes in allele frequency in the next generations? *
1) non-random mating
2) gene flow
3) genetic drift (small population)
4) mutations
5) natural selection (adaptation)
Answer:
3) genetic drift (small population)
I hope this helps you
:)
What is the study about biology?
Answer:
Biology is a natural science discipline that studies living things. It is a very large and broad field due to the wide variety of life found on Earth, so individual biologists normally focus on specific fields. These fields are either categorized by the scale of life or by the types of organisms studied.
Explanation:
Answer: The study about biology is the study of life and science of life and living organisms
good luck!
PLEASE HELP WITH THIS
Answer:
it will fight the cancer cells by attecking thecells
Explanation:
A reptile in the Everglades mush___??
A. Be very large
B. Eat other animals
C. Live on land
D. Try and stand out
Answer:
B
Explanation:
the only one that makes sense
can someone please help
Answer:
I can't read that
Explanation:
I can't read that
Aquatic organisms are able to survive when the temperature decreases. These organisms survive even when the surfaces of lakes and ponds are covered with ice. Which property of water best explains how aquatic organisms can survive during freezing temperatures?
A.
Water molecules are attracted to the surface that has a charge
B.Water expands when it freezes, so solid water is less dense than liquid water
C.It takes a large amount of energy to increase the temperature of the water
D.The positive charges of water’s hydrogen atoms are attracted to the negative charge of its oxygen atoms
Answer:
B. Water expands when it freezes, so solid water is less dense than liquid water
Explanation:
The molecules of water expands or increases in volume when it is freezed i.e. at a low temperature. This allows the solid state of water (ice) to be less dense than the liquid state (water). Hence, because ice is less dense than water, IT FLOATS. Therefore, in a water body whose temperature is low, the ice component floats on the surface, with liquid water beneath.
Due to this DENSITY property of ice (low) and water, aquatic organisms like fishes are able to survive and live just fine beneath a water body covered with ice. Note that, oxygen is trapped in the liquid portion of the water body underneath the ice covering.
.
What is natural selection?
Answer:
Natural selection is the process through which populations of living organisms adapt and change
Explanation:
Physical features help animals survive. Which statement best describes physical adaptations that occur through natural selection in changing environments?
A: They occur slowly over long periods of time.
B: They result in population decline.
C: They are all observable in the fossil record.
D: They are more likely to be observed in plants.
They occur slowly over long periods of time because of influence of environment.
What is natural selection?Natural selection is the process that shows survival and changes occur inspecies over time. The physical traits, sensory abilities, or behaviors enhance the survival of a species which can be adapted by the organisms for their survival.
So we can conclude that it occur slowly over long periods of time because of influence of environment.
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Which cells in plants are similar to stem cells in a human embryo?
1-Parenchyma cells
2-Collenchyma cells
3-Epidermal cells
4-Meristematic cells
_____ is credited with the discovery of Mycobacterium
A) Robert Hooke
B) Edward Jenner
C) Robert Koch
Answer:
Robert Koch
Explanation:
Discovered Mtb or mycobacterium tuberculosis
Where is water stored?
in a aquifer
in a sewer
in the atmosphere
(All of the above)
all of the above
because water can be stored everywhere
What is difficult to determine in the process of adaptation unless there is a closely related species to which you can compare findings?
It is difficult to determine ____ changes in the process of adaptation unless you can compare finding of one species to a closely related species
Answer: Answer: It is difficult to determine the process of adaptation unless there is a reference in from the closely related species. The process of adapting certain change in the body of an organism to survive in a better way is known as adaptation.
Explanation:
Answer:
Physiological changes
Explanation:
I got it right on plato.
Group II viruses violate the Central Dogma. Is the highlighted statement above true or false and why? In the blank space below, you must indicate if you think the highlighted statement above is True or False, AND you must pick one of the rationals for your choice from the list presented below. Your answer should follow the form of the word True or False immediately followed by a number. For example, False3 would mean you think the statement above is false, because Group II Viruses use a DNA genome as a template for DNA, which is then transcribed to mRNA. The Central Dogma is DNA -> RNA -> Protein. Group II viruses use a DNA -> DNA -> RNA -> Protein pathway Group II Viruses still use a DNA genome as a template for anti-sense DNA, which is then used as a template for RNA, which is then translated to proteins. This is still DNA -> RNA -> Protein. Group II Viruses use an RNA genome as a template for for proteins. Group II Viruses use a DNA genome as a template for DNA, which is then transcribed to mRNA. The Central Dogma is DNA -> RNA -> Protein. Group II viruses use a DNA -> DNA -> RNA -> Protein pathway.
Answer:
The statement is false
Explanation:
This type of virus is characterized by the presence of only one DNA strand. For this virus, the mechanism of infection is only effective against vegetal cells. After the introduction of the viral DNA inside of the host cytosol. The present proteins auxiliate synthesize the virus DNA and the antisense strand; transforming the single-stranded DNA into double-stranded DNA. In this way, the virus DNA is read by the transcription mechanism of the host, resulting in new virus proteins.
Since it follows the normal gene transcription: it not goes against the normal rule. Consequently, the statement is false.
Choose all of the muscles capable of dorsiflexion.
A. tibialis posterior
O B. extensor hallucis longus
o C. fibularis longus
OD. extensor digitorum longus
O E. flexor digitorum longus
O F. tibialis anterior
N
answer:F tibialis anterior
There's one muscle on the front of the leg for dorsiflexion, tibialis anterior. Tibialis anterior arises from the lateral surface of the upper tibia, and from the interosseous membrane.
The muscles capable of dorsiflexion are the extensor hallucis longus, extensor digitorum longus, fibularis tertius, and tibialis anterior. Options B, D, E, and F are correct.
The anterior tibialis muscle is located next to the tibia’s lateral surface. This muscle is the strongest of the foot’s dorsiflexion. It’s attached to the big toe’s base.
The main mechanism of action is to stretch the lateral four fingers at the metatarsophalangeal joint. In other words, when acting alone, it can’t stretch the whole length of the fingers, it can only stretch the fingers at the metatarsophalangeal, and at the interphalangeal joints, the fingers remain flexed.
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Which of the following choices, A B C or D, best describes the enzyme reaction graph below? Justify your choice.
PREDICTED RATES OF REACTION
A) Rate of reaction very slow
B) Rate of reaction increases with temperature
C) Optimum temperature of 37°C
D) Enzyme denatured at (according to books) about 45°C
Rate Optimum temperature is 37 degrees celsius.
If you look at the tip of the graph (point C) there is more reaction which means it's the perfect temperature for enzyme reaction
The statement that best describes the enzyme reaction graph below is as follows:
The optimum temperature of 37°C.Thus, the correct option for this question is C.
What do you mean by Enzyme reaction?Enzyme reaction may be characterized as a type of reaction which is significantly catalyzed by the presence of specific enzymes in order to lower the activation energy and enhances the rate of reaction.
According to the graph given below, point C indicates the high rate of reaction which occurred at the optimum temperature. Point D reveals a very slow rate of reaction instead of A. So, options A and D are eliminated. Point B is accurate but at point C the rate of reaction increases with temperature is more accurate than B.
Therefore, the optimum temperature of 37°C is a statement that best describes the enzyme reaction graph.
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Penny's class was learning how rapidly some changes can happen on Earth. Which event causes the fastest change to the surface of Earth?
O water flowing in a riverbed
O a wave crashing on a beach
O an earthquake cracking a road
o wind blowing against a mountain
Nostrils are lined with tissue that contains cilia. The tissue helps keep dust and other foreign particles out of the body.
What type of tissue lines the nostrils?
smooth
O nervous
epithelial
connective
Answer:
B. Epithelial
Explanation:
The respiratory segment comprises most of each nasal cavity, and is lined with ciliated pseudostratified columnar epithelium (also called respiratory epithelium).
Please answer this question
Answer:
Phyllite: foliated
Gneiss: foliated
Quartzite: non foliated
Schist: non foliated
Hornfels: foliated
Marble: non foliated
Slate: non foliated
( if a rock is foliated, it will have layers)
how can sense of sight help a dog
Sense of sight can help a dog because dogs' field of vision is greater than us humans. This means that they will be able to see more than us even though their vision is blurry. (They are also great at sensing movement)
What type of amino acids would you expect to see in the DNA-binding regions of such proteins?
Match the terms in the left column to the appropriate blanks in the sentences on the right.
Not all terms will be used.
DNA -binding regions of the proteins of the study would likely contain D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. charged amino acids, such as D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content., D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content.. Electrically charged, D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. side chains of these amino acids would bind to DNA, which is D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. charged, due to the D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. content.
Answer:
The type of amino acids I would expect to see in the DNA binding regions of such proteins are AMINO ACIDS THAT ARE POSITIVELY CHARGED AT pH 7.
Explanation:
In DNA-binding regions of proteins, it is expected to see basic positively charged amino acids.
In the example above:
DNA-binding regions of the proteins of the study would likely contain positively charged amino acids, such as lysine and histidine. Electrically charged, positive side chains of these amino acids would bind to DNA, which is negatively charged, due to the phosphate group content.The deoxyribonucleic acid (DNA) is a negatively charged molecule due to the presence of the phosphate groups.In the phosphate backbone of the DNA molecule, each phosphate group contains one negatively charged oxygen (O) atom.In proteins, lysine (K), arginine (R) and histidine (H) amino acids are positively charged due to the properties of their side chains.Moreover, aspartic acid (D) and glutamic acid (E) are negatively charged amino acids.In conclusion, in DNA-binding regions of proteins, it is expected to see basic positively charged amino acids.
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A scientist determines that a human heart pumps more volume of blood per minute from the left ventricle after a greater volume of blood enters the right atria of the heart. The scientist also determines that this process is not regulated by neurotransmitters or hormones. Required:
Name the explanation for this phenomenon and describe the mechanism.
Due to homeostasis, the heart pumps more volume of blood per minute from the left ventricle after a greater volume of blood enters the right atria of the heart.
What is homeostasis?Homeostasis is the process by which the body maintains a fairly constant internal environment.
Homeostasis is concerned with ensuring balance in the functions of the body.
Since a greater volume of blood enters the right atria of the heart human heart, the heart pumps more volume of blood per minute from the left ventricle in order to maintain balance of blood flow throughout the body.
Therefore, the heart pumping more volume of blood per minute from the left ventricle after a greater volume of blood enters the right atria of the heart is due to homeostasis.
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How is it possible that viral DNA can be inserted into the genome of bacteria?
A bacterial enzyme called DNA ligase is used to combine the gene with the opening vector. The ligase joins the ends of the DNA strands to produce a single circular molecule that contains the vector as well as the gene.