Question 3

Which substances may pass through a cell membrane by

simple diffusion?

carbon dioxide and starch

starch and protein

carbon dioxide and water

protein and fat

Na

Which of the following characteristics of plants is absent in their closest relatives, the charophyte algae? a. chlorophyll b b. cellulose in cell walls c. sexual reproduction d. alternation of multicellular generations

Sodium has the atomic number 11 How many electrons are in a sodium ion, which has the symbol Na+? A) 10 B) 11 C) 12

Why was the rearing of marine species in tank aquaculture so difficult before yonathan zohar figured out how to do it?

All of the following describe possible results of competition between two species except A) competitive exclusion. B) aposematic coloration. C) resource partitioning. D) reduction in the population of one species.

How does the binding exert a positive effect? How does the binding exert a positive effect? The CAP-cAMP complex triggers the formation of the DNA loop, which prevents binding of the repressor protein.

Which of the following is NOT a function of the nose? A) warming of incoming air B) acting as a resonating chamber for speech C) filtering incoming air D) detecting olfactory stimuli E) gas exchange

Which vegetation type found in the Russian Federation represents a cold-resistant, coniferous forest?

What is diffusion? Why is diffusion an example of passive transport?

The thin membrane that covers the external vaginal opening of some women is called the

Precipitation is most likely to occur when the sky is?