In this drawing of a chloroplast, which structure represents the thylakoid membrane?
A) structure A
B) structure B
C) structure C
D) structure D
Answer: C
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Viruses infecting algae have never been detected.
Answer the following statement true (T) or false (F)
In the biological species concept, it is specified that two organisms are of the same species if they
breed and
a. are unsuccessful in producing offspring. b. produce any offspring. c. produce fertile offspring under laboratory conditions only. d. produce fertile offspring under normal circumstances. e. produce infertile offspring.
An individual has been diagnosed with multiple sclerosis (MS), which is a disease that leads to deterioration of the myelin sheath that covers some neurons. What is a likely physical symptom of this disease?
A) inability to control muscle movements B) progressive memory loss C) feeling of euphoria D) inability to concentrate in chaotic situations
Match the microscope part with it's function.
Iris diaphragm A) Focus light onto the specimen B) Control the amount of light reaching the specimen C) Brings the specimen into general focus D) Increases the detail of the image