MCAT Exam Complete Questions with Verified Latest Correct Answers GRADED A+

MCAT Exam Complete
Questions with Verified Latest
2025-2026 Correct Answers
GRADED A+
Resolution
- ANS - differentiate close objects



magnification
- ANS - increase size



eyepiece magnification
- ANS - 10x



objective magnification
- ANS - 4x,10x,20x, 100x



Cell Theory
- ANS - -all living things composed of cells

-cell=basic functional unit of life

-cells from other cells only

,-cells have DNA (parent-->daughter cells)



total magnification
- ANS - eyepiece x objective



diaphragm (microscope)
- ANS - controls light

image contrast



hematoxylin
- ANS - -commonly used dye

-shows nucleic acids (DNA,RNA)



how does the dye hematoxylin show nucleic acids?
- ANS - binds to the negative sugar-phosphate backbone



phase contrast microscope
- ANS - -living organisms

-differences in refractive indices among different subcellular
structures



electron microscope
- ANS - -atomic level

,-samples must be sliced thinly and impregnated with heavy
metals for contrast



prokaryotes
- ANS - before nuclei (no nuclei)



eukaryotes
- ANS - after nuclei



types of prokaryotes
- ANS - bacteria and blue-green algae



prokaryote characteristics
- ANS - -unicellular

-no nucleus or membrane bound organelles

-cell wall in all

-ability to carry other pieces of DNA



What type of genetic material is present within prokaryotes?
- ANS - -single circle molecule of DNA

-within nucleoid region

, plasmids
- ANS - -circular DNA

-small

-few genes

-replicate independently



cocci
- ANS - spherical bacteria



bacilli
- ANS - rod-shaped bacteria



how do antibacterials work?
- ANS - tend to attack bacterial specific structures



Eukaryote characteristics
- ANS - -protists, fungi, plants, and animals

-cell walls in fungi and plants

-nucleus

-unicellular or multicellular



cytoskeleton proteins
- ANS - -actin filaments