When he discovered that blood is pumped from the heart to the body, and back to the heart, William Harvey had a difficult time getting people to accept his discovery because it went against the ancient teachings of Galen.
blood is a fluid connective tissue contain blood cells and an plasma.
The major functions include transportation and providing immunity and protection.
The major components include plasma primary constituent of blood contain 55 percent of blood volume. It is made up of water, salts, proteins, and blood cells.
Red Blood Cells which determine blood type, biconcave in shape, enucleated contain millions of hemoglobin molecules.
White Blood Cells act as defensive cell in the immune system and lymphatic system against infection.
Platelets are formed from pieces of cells present in the bone marrow called megakaryocytes.
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Answer:
1 - William Harvey
2 - Galen
Explanation:
Galen, who postulated that blood was produced continuously in the liver and absorbed by the body (not recirculated), served as the Roman emperor's personal physician. For 1500 years, his theories about human anatomy went unquestioned until Harvey's proposal in 1628.
It differs due to the life cycle of each tree, and the very specific way the trees go.
What do you mean? Plants do not eat the sun.
Answer:
i mean they eat the sun kinda because they use the sun to make food
Explanation:
B. In both oogenesis and spermatogenesis, the cells become haploid after meiosis I.
C. In both oogenesis and spermatogenesis, the cells become haploid after meiosis II.
D. During spermatogenesis, the cells become haploid after meiosis I, while in oogenesis, the cells become haploid after meiosis II.
Answer:
B. In both oogenesis and spermatogenesis, the cells become haploid after meiosis I.
Explanation:
i got it right
B) taking in carbon dioxide and making sugars (carbohydrates)
C) synthesizing carbon dioxide and making cellulose
D) converting sugar to oxygen and water
Photosynthesis contributes to plant growth by taking in carbon dioxide and making sugars (carbohydrates). Option B is correct.
In photosynthesis, carbon dioxide and water are converted to oxygen and glucose. The glucose is consumed by the plant as food. Oxygen is produced as a by-product of photosynthesis.
In cellular respiration, oxygen, and glucose are converted to water and carbon dioxide, with water and carbon dioxide being by-products. ATP is the energy that is converted from the process.
Photosynthesis is the process of converting sunlight or solar energy to chemical energy. The productivity of agricultural crops is directly dependent on the photosynthesis rate.
Therefore the correct option is option B.
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Answer: B) taking in carbon dioxide and making sugars (carbohydrates)
Input: Photosynthesis contributes to plant growth by taking in carbon dioxide and making sugars (carbohydrates).
Explanation: It contributes to the growth of plants.
Answer: C. Homologous chromosomes are separated in meiosis but not in mitosis.
Explanation: There are two main types of division that take place in eukaryotic cells, mitosis, and meiosis. Mitosis is the type of division that is used for growth, repair, and replacement of tissues. Therefore it is not necessary that the cells have different chromosome numbers or are varied genetically in the daughter cells in the case of mitosis.
Meiosis is the division that takes place to form the gametes for sexual reproduction. It is important in the first stages of meiosis I, to introduce variation and to halve the chromosome number.
Chromosomes numbers are halved (from 46 to 23) during meiosis I because the gametes (sperm and egg) come together and fuse during fertilization to form a zygote. When this fusion occurs (23 from the zygote and 23 from the egg), the chromosome number needs to be returned to that of the parent cell (46).
At the end of meiosis, four genetically unique cells are produced with half the number of chromosomes as the parent cell (23 cromosomes) . After the process of mitosis is completed, two cells genetically identical to each pther are produced and have the same number of chromosomes as the parent cell (46 cromosomes).
Genetic variation is actually important because of changing environmental conditions.
B.respiration
C.decomposition
D.building proteins
The correct answer is A.photosynthesis
In the process of photosynthesis plants use the energy of the sunlight and absorbed CO2 from the atmosphere to create simple sugars. In this process, plants also create oxygen molecules that are released to the athmosphere.
Human activities that involve burning fossil fuels cause a release of a huge amount of CO2 to the atmosphere. Photosynthesis in plants can reverse the effects of this, but only to a certain extent. This is, but all means, not enough to stop the global warning effect that the CO2 build-up in the atmosphere is causing.
Answer:The correct answer is -
A.photosynthesis.
Explanation:
Human activities such as burning of fossil fuels (like coal and oil) , clearing of forests can lead to the accumulation of CO2 (carbon dioxide) in the atmosphere, which affects the carbon cycle.
This can lead to many harmful effects like global warming (overall rise in the earth temperature).
These human interactions can be counteracted through photosynthesis.
Photosynthesis is a process of formation of food (glucose) in green plants and algae using CO2 and water in the presence of sunlight.
It releases oxygen in the atmosphere as a byproduct of this process.
The atmospheric CO2 can be reduced through photosynthesis and therefore, it can help counteract the given human activities.
Thus, option A) is the right answer.