Answer the following question given this paragraph: 1. The first step in eukaryotic cell division, as it is in prokaryotic cell division, is DNA replication. As you can see in Figure below , each chromosome then consists of two identical copies. The two copies are called sister chromatids. They are attached to each other at a point called the centromere. Q: Dna replication is the first step in what process for both eukaryotic and prokaryotic cells? Choices: - cell death - cell growth - cell transfer - cell division A:
cell division
Answer the following question given this paragraph: Q: Part of the scientific process, these are statistical probabilities rather than certainties? Choices: - Hypothesis - assumptions - results - predictions A:
predictions
Q: Answer the following question given this paragraph: Q: Because pathogenic bacteria typically cause disease by releasing exotoxins or endotoxins, they have potential use as what type of weapon? Choices: - radioactive - pandemic - nuclear missile - bioterrorism A:
A: bioterrorism
Question: Answer the following question given this paragraph: In anaphase I, the spindle fibers pull the linked chromosomes apart. The sister chromatids remain tightly bound together at the centromere. It is the chiasma connections that are broken in anaphase I as the fibers attached to the fused kinetochores pull the homologous chromosomes apart (Figure 7.5). In telophase I, the separated chromosomes arrive at opposite poles. The remainder of the typical telophase events may or may not occur depending on the species. In some organisms, the chromosomes decondense and nuclear envelopes form around the chromatids in telophase I. Cytokinesis, the physical separation of the cytoplasmic components into two daughter cells, occurs without reformation of the nuclei in other organisms. In nearly all species, cytokinesis separates the cell contents by either a cleavage furrow (in animals and some fungi), or a cell plate that will ultimately lead to formation of cell walls that separate the two daughter cells (in plants). At each pole, there is just one member of each pair of the homologous chromosomes, so only one full set of the chromosomes is present. This is why the cells are considered haploidthere is only one chromosome set, even though there are duplicate copies of the set because each homolog still consists of two sister chromatids that are still attached to each other. However, although the sister chromatids were once duplicates of the same chromosome, they are no longer identical at this stage because of crossovers. Q: Spindle fibers pull what apart in anaphase i? Choices: - known chromosomes - risk chromosomes - True Chromosomes - linked chromosomes A:
Answer: linked chromosomes
*Question*
Answer the following question given this paragraph: Water can flow easily through a permeable soil. Spaces between the inorganic particles are large and well connected. Sandy or silty soils are permeable, water-draining types of soils. Q: Some soil water can flow through easily. what kind of soil is this? Choices: - Stationary - porous - dense - permeable A:
**Answer**
permeable
Q: Answer the following question given this paragraph: 6. Aging is associated with the death of cells. Give two reasons why cells die. Q: What natural process is associated with the death of cells? Choices: - reducing - dissolving - cooling - aging A:
A: aging