Cells, Stability and Change

Which statement describes the stem cells and how they become new types of cells?

• They are embryonic stem cells that differentiate based on the expression of specific genes and the influence of external chemical signals.

• They are adult stem cells that replicate based on the expression of specific genes and the influence of external chemical signals

• They are embryonic stem cells that differentiate into cell types similar to their tissue of origin when their DNA mutates

• They are adult stem cells that replicate into cell types similar to their tissue of origin when their DNA mutates

Tags

NGSS.HS-LS1-4

Select the response that best completes the sentence.

A teacher showed slides of different stages of mitosis to four students and asked them to describe the stage viewed under the microscope. Which student correctly describes the stage?

• Student 1

• Student 2

• Student 3

• Student 4

Tags

NGSS.HS-LS1-4

• point W

• point X

• point Y

• point Z

Tags

NGSS.HS-LS1-4

Which stage of mitosis did the student observe?

• anaphase

• metaphase

• prophase

• telophase

Tags

NGSS.HS-LS1-4

The image depicts which part of cell theory?

• cells come from other cells

• cells are the smallest unit of life

• all organisms are made of cells

Tags

NGSS.MS-LS1-1

If cells missing the TP53 and cyclin proteins continue through the cycle, what will be the impact on the daughter cells produced at the end of mitosis?

• The cells will be of normal size with stable DNA

• The cells will be too small with stable DNA

• The cell will be of normal size with mutated DNA

• The cells will be too small with mutated DNA

Tags

NGSS.HS-LS1-4

Determine the order of stages based on the events given.

A student notes some events of the cell cycle in a list.

the nuclear envelope distinegrates

DNA is duplicated

The cell grows larger and makes more proteins

DNA condenses to form chromosomes

• Growth 1, mitosis, synthesis, mitosis

• Growth 1 synthesis, mitosis, mitosis

• Mitosis, synthesis, growth 1, mitosis

• Mitosis, growth 1, mitosis, synthesis

Tags

NGSS.HS-LS1-4

• Bacterial cell

• Leaf cell

• Liver cell

• Skin cells

Tags

NGSS.HS-LS1-4

Using the data in the graph, when is DNA sythesized?

• immediately before mitosis begins

• immediately after mitosis begins

• in the middle of mitosis

• between the cycles of mitosis

Tags

NGSS.HS-LS1-4

Which checkpoint would detect an error just prior to DNA duplication in the cell cycle?

• W

• X

• Y

• Z