CFA Body Systems & Viruses Redo

Which systems work together to provide protection for the body with the systems shown in the diagram above?

• circulatory, immune, and integumentary systems

• integumentary, excretory, and muscular systems

• circulatory, skeletal, and digestive systems

• muscular, immune, and nervous systems

Tags

NGSS.HS-LS1-2

Which of the following is effective in reducing the number of viral infections?

• none of the above

• antibodies

• inoculation

• vaccines

A scientist is in a laboratory investigating unknown specimens and is trying to determine whether they are viruses or bacterial cells. Below are the scientist's observations. Match the scientist's observations with the category that best applies.

Groups:

(a) Virus

,

(b) Bacterial Cell

,

(c) Applies to both

• The specimen is extremely small

• The specimen has an outer protein coat

• The specimen is observed to have genetic material

• The specimen has its own ribosomes

The most likely function of the structure labeled X in the above figure is –

• storing and protecting viral DNA

• anchoring the virus to a cell

• injecting viral DNA into a cell

• assembling the parts of a virus

This structure helps what two body systems distribute food to the body?

• digestive and nervous

• digestive and endocrine

• digestive and circulatory

• digestive and respiratory

Tags

NGSS.MS-LS1-3

The lungs and skin both perform functions that are vital in maintaining homeostasis. The lungs rid the body of carbon dioxide waste and the skin eliminates excess water, salts, and heat. Based on this, in which body system would both skin and lungs be included?

• respiratory

• integumentary

• circulatory

• excretory

Tags

NGSS.HS-LS1-3

Viruses have similarities and differences from cells. Which statements below correctly describe either commonalities or differences between viruses and cells? Select TWO correct answers.

• Viruses and cells both have a form of genetic material, such as DNA.

• Viruses and cells both have organelles which perform basic functions.

• Viruses and cells both have identical life cycles.

• Viruses and cells both have surface proteins which allow for recognition and binding to hosts.

• Viruses cannot carry out their life cycles unless inside a host cell.

Consider the correct answers you chose in Part A. What is the best justification for choosing these two answers?

• Genetic material is essential for living things.

• Surface proteins on both cells and viruses allow for recognition of the host cells.

• Cells have genetic material and organelles, while viruses have genetic material but do not have organelles.

• Organelles have distinct functions inside of cells.

The ​ (a)   system consists of a group of organs that help break down food into nutrients and simpler substances. The (b)   system helps transport these nutrients and substances throughout the body, and into the cells. Food that is undigested moves through the large intestine, and is eliminated from the body through the ​ (c)   system.

Move the correct answer to each box. Not all answers will be used.

• digestive
• circulatory
• excretory
• endocrine
• respiratory

Which two systems help deliver oxygen to cells in the human body?

Select TWO correct answers.

• digestive

• circulatory

• integumentary

• respiratory

• skeletal