Author Question: Water, oxygen, and ____ most freely flow across a cell membrane. a. calcium b. positively charged ... (Read 113 times)

future617RT

  • Hero Member
  • *****
  • Posts: 543
Water, oxygen, and ____ most freely flow across a cell membrane.
 
  a. calcium
 b. positively charged ions
  c. magnesium
 d. carbon dioxide

Question 2

What structure is composed of two layers of fat molecules that are free to flow around one another?
 
  a. the endoplasmic reticulum
  b. a ribosome
 c. a mitochondrion
 d. the membrane



DHRUVSHAH

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

d

Answer to Question 2

d



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

For a complete list of videos, visit our video library