Answer:
A & C
Explanation:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
YES - A) You must have variation in the population, typically in the terms of "fitness" or having admirable/sucessful traits that make them more likely to reproduce and ensure their own offspring are fit too.
NO - B) It is sexual (not asexual) reproduction that uses natural selection for their offspring. Although some asexual organisms use natural selection, it is ALWAYS used if possible with natural selection to ensure the fitness of characteristics is passed down.
YES - C) Competition is necessary for natural selection to occur. When those who are more physically fit compete, they are more likely to live against their opponent and therefore pass on the trait of fitness.
NO - D) Although resources are necessary, large amounts are not as it does not lead to fighting over them (scarcity) bringing us back to the need for competition above.
Hope this helped!
allergies
antihistamines
allergens
B. allergies occur when people are exposed to substances that their bodies are sensitive to.
The immune system overreacts by producing an antibody called immunoglobulin E (IgE). These antibodies migrate to the cells, which release chemicals and cause an allergic reaction. This reaction usually causes symptoms in the nose, lungs, throat, sinuses, ears, lining of the stomach, or skin.
Allergies occur when the immune system reacts to foreign substances such as pollen, bee venom, animal scales, or foods that do not cause a reaction in most people. Your immune system produces a substance known as an antibody.
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They can have allergic reactions
Answer:
Molecules brought in: 3CO2, 9ATP, 6NADPH
Molecules Produced: 1G3P, 9ADP, 6NADP+ +H+
Molecules used and Regenerated: 3RuBP, 5G3P
Explanation:
1. Molecules brought in and utilized in the light-independent reaction or Calvin cycle:
-CO2 from outside the cell
-Molecules take energy from the light-dependent reactions
2. Molecules produced during the light-independent reaction or Calvin cycle that leave the cycle:
-Energy-carrier molecules that have lost some energy\
-3-carbon molecules that store energy
3. Molecules produced in the cytoplasm from the end products of the Calvin cycle:
-Organic molecules such as glucose
Thus, Molecules brought in: 3CO2, 9ATP, 6NADPH
Molecules Produced: 1G3P, 9ADP, 6NADP+ +H+
Molecules used and Regenerated: 3RuBP, 5G3P
In the Calvin cycle, CO2, 12NADPH, and 18ATP are brought in and used. The 2G3P molecules produced are used in the construction of glucose, and 12NADP+ and 12H+ are reused in the light-dependent reactions. 10G3P, 18ADP, and 6RuBP are used and regenerated within the cycle.
In the Calivin cycle, the molecules that are needed and brought into the cycle are b. CO2, c. 12NADPH, and g. 18ATP.
The molecules produced during the six turns of the Calvin cycle that leave the cycle are f. 2G3P (these will go on to form a glucose molecule), and h. 12NADP+ + 12H+ (the used electron carriers that go back to the light-dependent reactions to be recharged).
The molecules that are used and regenerated within the Calvin cycle during the six turns are a. 10G3P, d. 18ADP (which will pick up a phosphate group to be reused as ATP), and e. 6RuBP (the enzyme that fixes CO2).
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[ Select]
and [Select]
Cry Shape HeartyAnswer:Cry Shape Hearty
Cry Shape HeartyCry Shape Hearty
Cry Shape HeartyExplanation:Cry Shape Hearty
Cry Shape HeartyCry Shape Hearty
Answer:
Differentiated cells refer to the specialized cells in multicellular organisms modified to carry out a particular function, such as transporting a certain substance or executing a specific task, while undifferentiated cells refer to the stem cells capable of giving rise to indefinitely more cells of the same type,.
b. reproduction
c. mitosis
We find DNA on the chromosomes, in every living cell that an organism owns. So, the correct option is A.
The word chromosome comes from the Greek words for color (chroma) and body (soma). Chromosomes are so named because they are cell structures, or bodies, that are strongly stained by certain color dyes used in research.
Chromosomes are defined as structures found inside the nucleus of a cell that are organized into genes from proteins and DNA. Each cell normally has 23 pairs of chromosomes.
These are threadlike structures which are made of protein and a single molecule of DNA that serve to carry the genomic information from cell to cell.
Therefore, the correct option is A.
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Answer:
A. Chromosomes
Explanation:
A Chromosome is some thing carrying genetic information in the form of genes.
Answer:
Answer is D. Pseudopodia.
Explanation:
Pseudopodia are described as a temporary extension of the cytoplasm. These are found in some certain unicellular protists like amoeba.
The pseudopodia is useful for movement and ingestion. They are useful in capturing or engulfing prey for a process known as phagocytosis.