Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
Positive Phototaxis Describes _______? A. Movement towards a light source. B. Movement away from a Light Source. C. rotation nearby a light source. D. Energy production from a Light Source. |
A. Movement Towards a light source. |
|
|
Which of these processes requires energy?
A. Simple diffusion B. Facilitated diffusion C. Active transport D. Osmosis |
C. Active transport
|
|
|
Where is the genetic information of the cell stored?
A. Golgi apparatus B. Nucleus C. Peroxisome D. Lysosomes E. Endoplasmic reticulum |
B. Nucleus |
|
|
In a Gram-positive cell, the peptidoglycan layer exists ____. A. in the periplasm B. underneath the plasma membrane, inside the cell C. on top of the plasma membrane, outside of the cell D. anchored by LPS |
C. on top of the plasma membrane, outside of the cell
|
|
|
Symport, Uniport, and Antiport are all examples of ______. A. simple diffusion B. facilitated diffusion C. osmosis D. active transport |
D. active transport |
|
|
Why is no energy required in passive transport? A.The membrane physically moves the molecules. B. The concentration gradient drives the movement. C. Transport proteins move the molecules, so no energy is required. |
B. The concentration gradient drives the movement. |
|
|
A positively charged sodium ion _____. A. freely diffuses directly across the cell membrane B. would get stuck in the hydrophobic core of the membrane C. would require the use of integral protein channels to pass through a cell membrane D. is considered hypertonic is considered hypotonic |
C. would require the use of integral protein channels to pass through a cell membrane |
|
|
By which of the following mechanisms can a cell transport a substance from a lower concentration to a higher concentration? A. Simple diffusion B.Facilitated diffusion C. Active transport D. osmosis E. aquaporins |
C. Active transport |
|
|
What makes phospholipid membranes good at keeping some molecules out, and allowing others to freely pass? A. They are positively charged. B. They have both hydrophilic and hydrophobic regions. C. They are completely hydrophilic. D. They are completely hydrophobic. |
B. They have both hydrophilic and hydrophobic regions. |
|
|
|
|
