Biology, 16.07.2019 12:30 myalee1419
Which of the following statements is true? a)during active transport, a material may be moved from an area of low concentration to an area of high concentration. b) during passive transport, energy is used to move material against a concentration gradient. c)during active transport, water is pumped across a membrane to equalize the concentration of salts on both sides. d)during passive transport, osmosis allows salts to move from one side of the membrane to the other to equalize concentrations on both sides.
Answers: 2
Biology, 21.06.2019 22:00
An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?
Answers: 3
Biology, 22.06.2019 05:50
The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
Answers: 2
Biology, 22.06.2019 07:30
The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction
Answers: 1
Biology, 22.06.2019 08:30
Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin
Answers: 1
Which of the following statements is true? a)during active transport, a material may be moved from...
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