Answers
Answer:
In areas of Africa where malaria is prevalent the number of sickle cell cases remains consistent generation after generation. ---- support the hypothesis.
In Canada the incident of sickle cell anemia has been increasing in the population. ----- contradicts the hypothesis.
Explanation:
In areas of Africa where malaria is widespread the number of sickle cell cases remains consistent generation after generation while on the other hand, In Canada the incident of sickle cell anemia are lower in the population because of environmental condition is not good for increase in malarial disease. In Africa, the environment is suitable for the mosquitoes that causes malaria so there is high increase of sickle cell anemia in the population.
Related Questions
True or false
An allele is the name given to the position of a gene on a chromosome.
Answers
Answer:
false
Explanation:
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Choose all of the statements which describe the difference between the function of the outer coverings in plants and animals: (2 points)
The skin helps protect the animal from weather changes and the environment.
The bark on trees helps turn the leaves toward the sunlight.
The waxy covering on plants reduce water loss in plants.
Group of answer choices
I and II
I and III
II and III
I, II, and III
Answers
Answer:
1 , 11 and 111 are correct
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In which system of plant do the tissues xylem and phloem work?
Answers
In vascular system of plant do the tissues xylem and phloem work
What is the main relationship among archosauria, diapsida, and reptilia clases?
Answers
Answer:
Archosauria (the "ruling reptiles") is a major group of diapsids, differentiated from the other diapsids by the presence of single openings in each side of the skull, in front of the eyes (antorbital fenestrae), among other characteristics. This continues the tetrapod trend of the reduction of skull bones by the fusion of multiple bones and the opening of fenestrae in the skull. This helps to lighten the skull, provides more room for muscles and other tissues, and allows more skull flexibility (kinesis) when eating. Other typical archosaurian characteristics include another opening in the lower jaw (the mandibular fenestra), a high narrow skull with a pointed snout, teeth set in sockets (called thecodont tooth implantation), and a modified ankle joint.
Diapsids ("two arches") are a group of amniote tetrapods that developed two holes (temporal fenestra) in each side of their skulls about 300 million years ago during the late Carboniferous period.[1] The diapsids are extremely diverse, and include all crocodilians, lizards, snakes, tuatara, turtles, and birds.[2] Although some diapsids have lost either one hole (lizards), or both holes (snakes and turtles), or have a heavily restructured skull (modern birds), they are still classified as diapsids based on their ancestry. At least 7,925 species of diapsid reptiles[3] exist in environments around the world today (nearly 18,000 when birds are included).
Reptilia, presented as a Class in our classification, includes turtles (Testudines), snakes and lizards (Lepidosauria), crocodiles and their relatives (Crocodilia), and birds (Aves), as well as a number of extinct groups.
Explanation:
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why do points on earth travel at different speeds?
Answers
Answer:
b
Explanation:
Dodder plants consist of tangled masses of yellow, leafless vines and contain few chloroplasts. The vines twist around and grow into the stems of other plants and absorb water and nutrients from them. Which statement best describes this relationship?
A)
Dodder plants are parasitic, relying on host organisms for resources.
B)
Dodder plants are consumers, transferring energy to other plants in the ecosystem.
C)
Dodder plants are decomposers, returning organic material back to the environment.
D)
Dodder plants are producers, while the other plants that they attach to are consumers.
Answers
Answer:
a
Explanation:
The vines of Dodder plants twist around and grow into the stems of other plants to absorb water and nutrients from them describes that Dodder plants are parasitic plants, relying on host organisms for resources.
What are Dodder plants?This plants are also known as Cuscuta or Amarbel.They are found in temperate and tropical regions.It consist of tangled masses of yellow, leafless vines and contain few chloroplasts.They cannot fulfil their nutrients requirement on their own, so it depends on the other planets making it parasitic plant.What are parasitic plants?"Parasitic plant- plant that obtains all or part of its nutrition from another plant (the host) without contributing to the benefit of the host."Example: Cuscuta, Mistletoe, etc.Hence, the correct option is A. Dodder plants are parasitic, relying on host organisms for resources.
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Compare how ectotherms and endothermic maintain body temperature
Answers
Answer: Ectotherms depend on external heat sources. Their body temperature changes with the temperature of the environment. Endotherms generated heat internally to maintain body temperature.
Explanation:
Please match the correct term to it definition
Answers
Answer:
Explanation:
1: Is symbiosis
2: is eutrophication
3: Predation
4: Trophic efficiency
5: Greenhouse effect
6: Nutrient cycling
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Which process transfers heat to produce this wind?
Answers
please write me a polar bear slogan
Answers
Answer:
Polar bears are cool
Explanation:
like cold
ha
ha
ha
Cellular respiration is almost the reverse of photosynthesis. Which compounds are produced in the chloroplast and used by the mitochondria?
A. glucose, oxygen, carbon dioxide
B. water, carbon dioxide, ATP
C. carbon dioxide, ADP, glucose
D. glucose, oxygen
Answers
Answer:
the anwer is the letter B
what is the process of VEGETATIVE PROPOGATION?? PLEASE HELP ME and Thank you so much!!
Answers
Vegetative propagation is an asexual method of plant reproduction that occurs in its leaves, roots and stem. This can occur through fragmentation and regeneration of specific vegetative parts of plants.
A comparison of the age of the Earth obtained from radioactive dating and the age of the Universe
based on galactic Doppler shifts suggests that?
A) the Earth was formed after the Universe began
B) the Earth is immeasurably older than the Universe
C) the two dating methods contradict one another
D) The Earth is about the same age as the Universe
Answers
A comparison of the age of the Earth obtained from radioactive dating and the age of the Universe based on galactic Doppler shifts suggests that the Earth was formed after the Universe began.
Why do geologists use the radiometric age of meteorites as a guide to the age of the solar system?The meteorites have been isolated in the cold vacuum of space since their formation, so they have seen no significant heating since the time of their formation.
What is the age of the Earth accepted by most scientists today?Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date.
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Did the Earth change to support life or did life change the Earth?
Be sure to support your answer with researched
EVIDENCE.
Answers
Answer:
At first, the Earth was not even able to support life. There was no oxygen in the atmosphere, and Earth's surface was extremely hot. Slowly, over millions of years, the Earth changed so that plants and animals could begin to grow. Living things then changed the Earth even more.
The relationship of structure to function is one of the major themes in biology. For the following structure/function pairs, describe the structure and then explain how the function is related to the
structure.
Membrane protein structure/active transport or facilitated diffusion
Answers
Answer:
Membrane protein is made up of phospholipid bilayer.
Explanation:
Membrane proteins have one or more segments that are embedded in the phospholipid bilayer. This structure helps cells to maintain their shape, carry out changes triggered by chemical messengers, and transport material. Cell membrane have thousands of proteins that are embedded in the cell's lipid bilayer. The proteins present in the cell membrane is responsible for the active transport means use energy to transport molecules and ions across the cell membrane.
6. explain the relationship between temperature and pressure. why do you think this occurs?
Answers
Answer:
The pressure of a given amount of gas is directly proportional to the temperature at a given amount of volume. When the temperature of a system goes up, the pressure also goes up, and vice versa.
Explanation:
This occurs because of the pressure temperature law. (or also known as the Gay-Lussac's law)
Which of the layers of the epidermis is found only in thick skin?
stratum basale
stratum spinosum
stratum corneum
stratum lucidum
Answers
Answer:
stratum spinosum
Explanation:
The stratum spinosum is the thickest layer of the epidermis which lies just above the basal layer. The stratum spinosum consists of basal cells that have matured into squamous cells, also known as keratinocytes.
What percentage of your DNA do you get from either parent ? Explain.
Answers
You receive 50% of your DNA from each of your parents, who received 50% of theirs from each of their parents, and so on. In the chart below you can see how the amount of DNA you receive from a particular ancestor decreases over generations. If you go back far enough, there is a chance that you inherited no DNA from a particular ancestor.
Carbon cycles through the biosphere in all of the following processes EXCEPT
a. photosynthesis
b. burning of fossil fuels
c. transpiration
d. decomposition of plants and animals
Answers
A(n) _____ mutation changes only a SINGLE base.
A. deletion
B. point
C. insertion
D. frameshift
Answers
Answer:
B. point
Explanation:
A point mutation changes only a single base. Hope it helps you !!
When the concentration of a solution is higher inside a cell than it is outside of the cell, is the solution inside hypertonic,isotonic, or hypotonic?
Answers
Answer:
Hypertonic solution
Explanation:
Hypertonic solution refer to the solution of a cell if the solute concentration is higher inside than outside and it cannot cross the membrane. In Hypertonic solution, Water crosses the cell membrane in both directions which result in more b water leaving the cell than entering it. Therefore, a cell place in this solution will shrink due to exosmosis.
Help help help help help help
Answers
Answer:
Mammal 2 and 4 are most related, why?
Explanation: They have TCT, CAG, CTG and CA, the only ones it doesn't have is the last ones, A and G, making it the only difference. 1 has 2 differences to 2, 3 differences to 4, and 3 has 2 differences as well, therefore 2 and 4 have the least differences.
Answer:
2 and 4
Explanation:
You can see their patterns match except for the last letters of 2 and 4
Use complete sentences to define the following terms or phrases in your own words. but be sure to use your own words!
6. Substrate
7. Active site
8. Catalase
9. Vitamin (include why they are important to enzymes and what this relationship is called)
10. Mineral (include why they are important to enzymes and what this relationship is called)
Answers
A single messenger RNA strand carries the instructions for multiple genes to create multiple proteins. True or False
Answers
Answer:
True
Explanation:
It does carry instructions to create proteins
Answer:
True
Explanation:
carries instructions for assembling amino acids into proteins
The color of an object that humans see is actually the only color of light not __________ by the object.
Answers
Answer:
The color of an object that humans see is actually the only color of light not __refracted.________ by the object.
which 4 hormones are released by the adrenal gland?
Answers
Answer:
1. adrenaline
2. cortisol
3. aldosterone
4. epinephrine
Water held within plants returns to the atmosphere as a vapor through a process called _______________.
Answers
Answer:
tranpiration is the nane of the process
Answer:
Water held within plants returns to the atmosphere as a vapor through a process called _______________. transpiration
An organism has a diploid number of 60. What is the organism's haploid
number?
Answers
Answer:
An organism has a diploid number of 60. What is the organism's haploid
number?
Explanation:
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Answer:
tanungin mo guro mo hahahah
HELP HELP AHHHHHHHH Which human activity will most likely contribute to ozone layer destruction?
Answers
Answer:
well cutting down trees using chemicals burning foccle fules
Explanation: