Science
Please Help with the last few questions on my Science Test.
11. Molecules naturally spread from areas of ______________ concentration to areas of ______________ concentration through a process called _____________.
1. high;low;diffusion
2.low;high;diffusion
3.high;low;active transport
4.low;high;passive transport
Use the work bank below to answer the questions that follow:
cells, tissue, organ, osmosis, tropism ,nucleic acids, organisms, motor neurons, enzymes, microscope, phyla, respiration, water, diffusion, energy, sensory neurons.
(Not All of these words are used)
12. ___________are the basic units of structure and function in living things.
13. A(n) ____________________ is a group of similar cells that perform a specific function in an organism.
14.____________________ are nerve cells that carry response information to muscles and organs.
15. Carbon dioxide and ____________ are outputs of cellular respiration.
16._________________ is essential to living things because many of the chemical reactions that occur in living things require it.
17. A student is observing a cell on a microscope slide and notices cell walls and membrane-bound organelles. the student concludes that the cells.
A. must be animal cells.
B. must be bacteria cells.
C. must be plant cells.
D. could be plant, animal, or bacterial cells.
18. (skip)
19. Contrast Mitochondria and chloroplast
2 answers
a) Molecules. b) Particles. Diffusion. Diffusion is the net passive movement of particles (atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration. It continues until the concentration of substances is uniform throughout.
5 answers