9th grade biology questions, please help!?

Question

1. The ability of a microscope to show details clearly is called
a.enlargement
b.magnification
c.reduction
d.resolution

2. One limitation of the scanning electron microscope is that it cannot be used to
a.examine specimens smaller than cells
b.view living specimens
c. produce an enlarged image of a specimen
d.produce an image of the surface of a specimen

3. A microscope with a 10x ocular lens and a 25x objective lens has a total power of magnification equal to
a.2.5x
b.35x
c.250x
d.2500x

4. The SI base unit for time is the
a.second
b.minute
c.hour
d.day

5. The SI prefix that represents 1000 times the base unit is
a.deci
b.centi
c.kilo
d.micro

Answer 1

dbcac

Answer 2

some species migrate at a similar time as others do no longer. actual this affiliation complements survival by utilising lowering opposition for nutrition ingredients and nesting websites for the time of breeding seasons. For migratory birds the southern climate is milder, there are extra daytime. those factors additionally advance the survival of a species. Migratory birds are responding to modifications of their environment and the migratory urge is genetically encoded because of the fact this isn't any longer a discovered habit. The "regular genetic code" isn't as regular as you will possibly think of even nonetheless this is the biochemical foundation of heredity. I say the two (A) & (D). As for the different achieveable solutions: (B) authentic, living organisms seek for to maintain inner stability. this is a stability between an inner environment and an ever-changing exterior environment. that's the regulation of inner situations in accordance with modifications interior the exterior environment. that's homeostasis. yet homeostasis would not comprise holding this stability by utilising changing the exterior environment (migration). this is an inner reaction. (C) authentic lower back. All living issues are created from cells. No argument there yet this answer is beside the point to the question.

Answer 3

1. d. resolution

2. b. view living specimens

3. c. 250 X

4. a. second

5. c. kilo

Answer 4

1. D

2. B

3. C

4. A

5. C

Answer 5

1. b, i think

2. sorry, idk it

3. d, i think

4. a, for sure!

5. c, for sure!!