PBS Unit 3

Organisms that cause infectious disease are called

• pathogens.

• hosts.

• antibodies.

• nosocomial.

________ produce antibodies.

• T-cells

• B-cells

• Phagocytes

• Antigens

Immunity gained from a vaccine is

• nonspecific immunity.

• innate immunity.

• naturally acquired immunity.

• artificially acquired immunity.

Which TWO would be considered proper aseptic technique?

• Use only sterile inoculating loops.

• Place all lids on lab table face up.

• Throw bacterial plates in trash can.

• Thoroughly disinfect all work surfaces.

Which characteristics did we look at in the lab to analyze bacterial colonies? Select all that apply.

• elevation

• size

• color

• form

The bacteria in this image are

• Gram positive.

• Gram negative.

When light shines into your eye, the pupil (the hole in the center of the colored part of your eye) will _______________ to limit the amount of light entering your eye.

• Dilate

• Constrict

• Stay the Same Size

• Open wider

Tags

NGSS.MS-LS1-8

What is the primary function of the plasma membrane in cells?

• To store genetic information

• To regulate the movement of substances in and out of the cell

• To produce energy for the cell

• To synthesize proteins

Tags

NGSS.MS-LS1-2

Which of the following is a characteristic of prokaryotic cells?

• They have a nucleus

• They contain membrane-bound organelles

• They have a cell wall

• They have linear DNA

In an experiment, what is the purpose of a control group?

• To provide a standard for comparison

• To introduce a variable to the experiment

• To ensure the experiment is biased

• To increase the sample size