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dlinn
2 months ago
6

Why are telomeres problematic for eukaryotic chromosome replication? a) They are highly repetitive and thus hard to replicate co

rrectly. b) Telomerase is more error-prone than the normal DNA Polymerase. c) The T loop blocks formation of primers on the lagging strand. d) Removal of the lagging strand primer leaves a gap in the one of the strand's DNA sequences. e) Maintaining very long telomeres promotes cancer cell formation.
Biology
1 answer:
11111nata11111 [2.5K]2 months ago
4 0
The correct choice is Option E. Prolonged telomeres facilitate the formation of cancer cells. Telomeres are the repetitive DNA sequences located at the ends of eukaryotic chromosomes. Typically, during the replication of eukaryotic chromosomes, telomeres are not completely duplicated, leading to their gradual shortening with each cell division. This process contributes to cellular aging and halts cell division, thereby serving as a barrier against cancer, which flourishes with elongated telomeres.
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What would be direct consequences from decreasing angiosperm biodiversity? Select all that apply. extinction of animals balancin
vlada-n [2515]

Answer:

reduction in potential medicines

decreased food supply

Explanation:

The direct impacts of a decline in angiosperm biodiversity include a decrease in accessible medicines and food sources.

Angiosperm biodiversity, or flowering plants, serve as essential food sources for numerous living organisms, including humans, clearly demonstrated in human agricultural practices. Various consumer categories within ecosystems rely heavily on flowering plants for sustenance, whether directly or indirectly.

Moreover, they also provide medicinal resources. For instance, chloroquine, a principal treatment for malaria, is derived from the flowering plant Chinchona pubescens.

Many species of flowering plants remain uncatalogued in the wild, holding potential for future food and medicinal applications.

Therefore, a loss in flowering plant diversity will directly lead to a reduction in available food and medicine.

3 0
3 months ago
All proteins are synthesized by ribosomes in the cell. Some ribosomes float freely in the cytosol, while others are bound to the
Tresset [2298]

Answer:

2. ER protein

4. insulin

6. lysosomal enzyme

Explanation:

Ribosomes serve as the cellular organelles responsible for synthesizing proteins since they create the necessary environment and machinery for this process.

Ribosomes can exist freely within the cytosol or be attached to the endoplasmic reticulum.

The proteins formed by free ribosomes are typically used within that same cell, such as DNA polymerase and ribosomal proteins, whereas proteins made by attached ribosomes are intended for transport throughout the cell, including insulin and lysosomal proteins.

Consequently, 2, 4, and 6 are correct.

3 0
4 months ago
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