According to research these are the 7 Characteristics of Life:
<span> 1. Living Things are Composed of Cells:</span>
<span>Single-cell organisms have everything they need to be self-sufficient.In multicellular organisms, specialization increases until some cells do only certain things.</span>
<span>2. Living Things Have Different </span>Levels of Organization:
<span>Both molecular and cellular organization.Living things must be able to organize simple substances into complex ones.<span><span>Living things organize cells at several levels:
</span><span><span>Tissue<span> - a group of cells that perform a common function.</span></span><span>Organ<span> - a group of tissues that perform a common function.</span></span><span>Organ system<span> - a group of organs that perform a common function.</span></span><span>Organism<span> - any complete living thing.</span></span></span></span></span>
Answer:
The correct answer is lysosomes.
Explanation:
Cells that secrete a lot of substances via active transport need a lot of lysosomes in their cytoplasm.
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Correct answer:
"<span>B- homologous chromosomes join together to form tetrads during prophase I"
</span>It is during prophase I that homologous chromosomes join together (<span>synapsis)</span> and form tetrads - four chromatids are together in the new structure of two chromosomes - and this is the reason why crossing-over occurs in this phase. It is in this tetrad that both arms of both chromosomes may crossover and matching regions exchange places. This process results in homologous chromosomes recombination leading to genetic variability.
<span>An organism of the Kingdom Protista could be organisms that are eukaryotic. Though they are such, some organisms that belong in this kingdom can't be classified as a plant, animal or fungus. Organisms like algae and kelp which belong in this kingdom are multicellular and they are able to provide for themselves food, shelter, and oxygen in underwater environments.</span>
