What is a covalent bond

Biology

1 answer:

Artyom0805 [142]3 years ago

4 0

A covalent is chemical bond that involves the sharing of electron pairs between atoms

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A plant can have either broad leaves (B) or narrow leaves (b). A plant with genotype Bb is crossed with a plant with genotype Bb

aleksley [76]

Answer:

Explanation:

B b

B "BB"- "Bb"

b "Bb"- "bb"

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2 years ago

Why don't all plants use the c4 or cam pathways to avoid photorespiration?

12345 [234]

Not all plants use the C4 or CAM pathways to avoid photorespiration because they require a lot of extra energy to perform their function. In photosynthesis, minimizing water loss is essential; C4 plants relocate the carbon dioxide to lessen photorespiration while CAM plants indicates when to extract carbon dioxide. Their function is also related to plants survival where C4 plants is usually a summer plant while CAM plants is suited to thrive in desserts. Therefore, only plants that need special requirement to survival use these pathways.

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4 years ago

Which of the following statements is correct? Which of the following statements is correct? The sperm and egg have twice as many

Triss [41]

Answer:

Meiosis results in gametes that are used in reproduction.

Explanation:

The sperm and egg have twice as many chromosomes as the parental cells. INCORRECT. Sperm and eggs are the gametes, and they have only half the number of chromosomes that can be found in the germ cells or somatic cells. Gametes are haploid, n.
Geneticists use the terms "son" and "daughter" to distinguish between cells resulting from cell division. INCORRECT. The term "daughter cells" is used to refer to the products of cell division. "son cells" is not used at all.
Meiosis results in gametes that are used in reproduction. CORRECT. Germ cells are the reproductive, diploid cells produced by testes and ovaries. After meiosis, each germ cell produces four haploid cells that are the gametes. Gametes´ destiny is to merge during fecundation, creating a new diploid cell called the zygote. The zygote is a diploid cell that suffers successive mitosis to form the new organism.
Asexual reproduction requires the production of eggs and sperm. INCORRECT. Only sexual reproduction needs gametes. Cells that reproduce asexually duplicate their genetic material and cytoplasmic content and then divide, producing a new cell identical to its parental. This is the case of binary fission, for example.