Why can oxygen diffuse across a cell membrane but a protein cannot?

A) proteins are too large.

B) oxygen is polar.

C) oxygen is a gas.

D) proteins absorb oxygen

Which statement is true for cephalochordates? Notochord is present only in the larval stage; it is absent in adults. Notochord is present in the larval stage; it transforms to vertebrae in adults. Notochord is present throughout their lives.

Which of the following is a method used to prevent soil depletion? a-Adding fertilizers b-Planting grasses on slopes c-dune fences

Which category most accurately describes waste such as food wastes, cardboard, cans, bottles, yard wastes, furniture, plastics, metal, glass, and e-waste? ?

The stems of horsetails contain: A. spores B. utensils C. silica

What's the difference between jet streams and global wind belts

How will water volume, incline gradient, and temperature affect the energy of a stream?

Chemical messengers released within the tissues where they are produced

Which is more effective at creating atp aerobic or anaerobic?

If the data below were put into a bar graph, which animal would have the lowest bar on the bar graph? Number of Individuals in a Rocky Mountain Forest Organism Population Mountain lions 150 Bobcats 300 Coyotes 10,000 Deer 25,000 mountain lions

Tay-Sachs disease is inherited as an autosomal recessive disease. A couple has learned that they are both heterozygous carriers of the Tay-Sachs recessive gene. What is the probability that they will have a child with Tay-Sachs disease? A. 0%B. 50%C.