BS Bachelor of Science: Intro to Life Sciences 4

Question 1

Which stage of mitosis is characterized by chromosomes aligning along the cell's equatorial plane?

Accepted Answer

Metaphase

Answer

During metaphase, chromosomes are aligned at the metaphase plate by spindle fibers before separation.

Question 2

A solution that causes cells to shrink due to water loss by osmosis is described as:

Accepted Answer

Hypertonic

Answer

A hypertonic solution has a higher solute concentration than the cell, causing water to move out by osmosis.

Question 3

In the central dogma of molecular biology, what is the correct order of information flow?

Accepted Answer

DNA → RNA → Protein

Answer

The central dogma states that genetic information flows from DNA to RNA (transcription) to protein (translation).

Question 4

Which type of symbiosis benefits both participating species?

Accepted Answer

Mutualism

Answer

Mutualism is a symbiotic relationship where both species gain a fitness benefit from the interaction.

Question 5

What is the term for the full set of genetic material (all chromosomes) contained in a cell of an organism?

Accepted Answer

Genome

Answer

The genome encompasses all genetic information encoded in an organism's DNA, including all chromosomes.

BS - Bachelor of Science Practice Test