Can someone help me with these questions?
2.) Osmosis is the movement of which type of molecule?
a.) glucose
b.) carbon
c) water
d.) protein
6.) The movement of molecules from an area of HIGH concentration to an area of LOW concentration is known as...
a.) diffusion
b.) active transport
c.) homeostasis
d.) osmosis
7.) Euglena and paramecium are single-celled eukaryotic organisms. They are both considered eukaryotes because they both have...
a.) a nucleus
b.) DNA
c.) cell membrane
d.) ribosomes
10.) Which characteristic distinguishes eukaryotes from prokaryotes?
a.) prokaryotes have a nucleus and eukaryotes do not
b.) prokaryotes have membrane bound organelles and eukaryotes do not
c.) eukaryotes have a nucleus and prokaryotes do not
d.) eukaryotes have a cell membrane and prokaryotes do not
11.) The cell membrane is made of which two molecules?
a.) phospholipids and proteins
b.) carbohydrates and sugars
c.) cellulose and lactose
d.) water and carbon dioxide
16.) Which of the following is a characteristic that BOTH prokaryotes and eukaryotes share?
a.) have cytoplasm
b.) have cell membrane
c.) have DNA
d.) all of the above
18.) The movement of molecules from a LOW concentration to a HIGH concentration requires the addition of energy. This type of movement is known as...
a.) osmosis
b.) active transport
c.) passive transport
d.) diffusion
19.) What is the major function of the cell's selectively permeable membrane?
a.) to regulate energy production in the cell
b.) to keep the cell's shape
c.) to control molecules entering and leaving the cell
d.) to allow a free flow of molecules
20.) The cell membrane helps to regulate the flow of molecules into and out of the cell and in doing so
a.) forces the cell to expand
b.) allows the cell to perform photosynthesis
c.) helps the cell make proteins
d.) helps the cell to maintain homeostasis
21.) All organisms are made up of fundamental units of life called...
a.) organisms
b.) molecules
c.) tissue
d.) cells
Answers: 2
Biology, 22.06.2019 05:00
Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.
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What processes would you expect to be key in the production of yogurt ?
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According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this? a. this implies that dna and proteins aren't essential in cells today. b. this implies that rna can catalyze any chemical reaction that enzymes catalyze. c. this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna. d. this implies that dna and proteins evolved after rna.
Answers: 2
Can someone help me with these questions?
2.) Osmosis is the movement of which type of molecule?
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