Life Science Test #2 - Performance Matters

A complex multicellular organism has different levels of organization. What is the order of the levels from least complex to most complex?

• organ system, organ, tissue, cell

• cell, tissue, organ, organ system

• cell, organ system, organ, tissue

• organ, tissue, cell, organ system

Which statement is NOT part of the cell theory?

• All cells have a nucleus.

• Cells come only from other living cells.

• Every living thing is made of one or more cells.

• Cells carry out the functions needed to support life.

Many cellular processes are performed by cells. A typical cell and a common process are shown in the diagram below. Which of the following is the best reason this cell is going through the process shown?

• to reproduce another cell

• to compete with another cell

• to maintain homeostasis of the cell

• to provide protection for the cell from the environment

Tags

NGSS.MS-LS1-2

How would a disease that damages the mitochondria most directly affect the functioning of cells?

• protein synthesis would be stopped

• waste materials would remain trapped in the cell

• hereditary information in the cell would be destroyed

• energy obtained from food molecules would be reduced

Tags

NGSS.MS-LS1-7

Some toxins prevent cells from absorbing water. Cells that are affected by these toxins are unable to carry out many of their normal functions. Which of these organelles would be most directly harmed by one of these toxins?

• chloroplasts

• endoplasmic reticulum

• mitochondria

• ribosomes

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

The circulatory and digestive systems interact with each other to help maintain homeostasis in the human body. Which pair of actions describes how these two systems work together to maintain homeostasis?

• taking in oxygen and transporting it to all the cells

• moving nutrients and fighting infections in the body

• removing wastes and excreting them out of the body

• providing nutrients and transporting them to the cells

What is a similarity between the respiratory and excretory systems?

• They both break down food.

• They both remove waste from the body.

• They both exchange gases within the body.

• They both transport nutrients throughout the body.

The human body has several major systems. Most body systems have multiple functions. Which of the following is NOT a major function of the musculoskeletal system?

• turning food into energy

• helping the lungs take in air

• helping the stomach digest food

• moving the bones of the skeleton

Karla is reading about a type of single-celled microorganism that can live inside the human body. This type of organism can either be harmful or harmless to people, depending on the type. One harmless type lives in the intestines and helps the body digest food. One harmful type can cause strep throat. Which type of organism is Karla most likely reading about?

• bacteria

• fungi

• parasites

• viruses

Tags

NGSS.MS-LS1-5

A pathogen enters an organism and infects it. Which statement best describes the general effect of the infection on the organism?

• The organism cannot reproduce.

• The organism cannot obtain energy.

• The organism experiences uncontrolled cell growth.

• The organism experiences a disruption in homeostasis.