Which are reactants of photosynthesis?

For plants and other organisms to develop differences among their respective species the alleles of their genes must contain var

olasank [31]

A) Mutation is the original source of variations for plants and other organisms which develops differences among their respective species

Explanation:

Genetic variation leads to the natural differences between each individual and among individuals of a species. The main cause for this variation is due to alleles that cause variations in the composition of genes or the DNA sequences.

A mutation is a genetic variation which leads to the creation of a new allele in a species population. Each variation in the DNA sequence leads to an allele formation and each allele leads to a difference in character or trait between individuals since they are the alternate version of the original genes.

Although genetic variations could be brought about by crossing over, random fertilization, or independent assortment; mutation is the original source because it provides the basic raw material for all the evolutionary changes.

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3 years ago

Tortoises found on the Galapagos Islands can have varied phenotypes. One of the variations in the phenotypes is with regard to

qwelly [4]

Answer: B:The drought decreased the grass and vegetation on the ground, leaving only vegetation on shrubs and trees above the ground. Natural selection selected for the tortoises with the domed shells and hoods.

Explanation:

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3 years ago

What you observe when examining the onion root tip using the low-power lens

bezimeni [28]

Explanation:

Low power objective shows more field of view but does not give appreciable details about the view.

In the root tip of onions, the cell walls are distinctly visible and they are arranged in a rectangular mosaic pattern.
The nucleus stands out appreciably and it is tiny.
The cytoplasm is also visible.
Root cells do not have chloroplast since they do not take part in photosynthesis.

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3 years ago

BRAINLIEST Which of the following adaptations will help a plant survive in a desert? A. Stem that stores water B. Shallow root s

sergij07 [2.7K]

Hello,

Here is your answer:

The proper answer to this question is option A "Stem that stores water".

For example: A Cactus stores water in its steam in order to survive in the desert.

Your answer is A.

If you need anymore help feel free to ask me!

Hope this helps!

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3 years ago

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According to the Endosymbiotic Theory, infoldings in the cell membrane of an ancestral prokaryotic cell gave rise to endomembran

Ad libitum [116K]

Explanation:

False: C) The ER provides separate microenvironments for each of the modifications that must take place to proteins.

The golgi apparatus comprised of several components called cisternae, these function as different microenvironments, where further modification proteins and lipids into functional biomolecules occurs.

During protein synthesis, transcription occurs in the nucleus, followed by translation within ribosomes, the newly synthesized proteins enter endoplasmic reticulum where they undergo folding and modification. Within the golgi body, the proteins are tagged and parceled into lysosomes for export.

Further Explanation:

The endoplasmic reticulum is a membrane system within the cytoplasm that extends from the outer nuclear membrane. Apart from increasing the surface area within the cell, this continuous system also carries out protein folding, synthesis and transport. In the endoplasmic reticulum or ER, some sections called the smooth ER, do not contain ribosomes, and may contain lipids, enzymes, and other proteins. Other sections bound to ribosomes, are called the rough Er. As a protein destined for the endomembrane system is being synthesized by a ribosome, the first amino acids in the growing polypeptide chain act as a signal sequence. That signal sequence ensures that the ribosome binds to the outer membrane of the ER and that the protein enters the ER lumen. The proteins undergo major modifications and are packed into vesicles.

Golgi bodies are flat, disk-like membranous regions. Proteins traverse the organelle by first having their vesicles bind to the cis face or receiving end. Like a post office, the golgi complex, or golgi body recognizes specific signal sequences, targets and further modifies and packages these compounds into lysosomes for delivery to their final destination. Proteins here undergo peptide processing and glycosylation

Learn more about cellular life at brainly.com/question/11259903

Learn more about mitochondria and similar structures at brainly.com/question/2855039

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