FREE BIOLOGY AND STUDY GAMES ABOUT CELL BIOLOGY

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FREE BIOLOGY AND STUDY GAMES ABOUT CELL BIOLOGY

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -41 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Isotonic

Answer:

The concentration of a solute is the same on both sides of the cell membrane. The system is in equilibrium with the concentration of the solute the same inside and outside of the cell.

Question 2: Passive transport

Answer:

The diffusion of particles or substances across the cell membrane without the use of energy.

Question 3: organelles

Answer:

The structures inside the cell that act as specialized organs

Question 4: Cytoskeleton

Answer:

The network of protein filaments that helps the cell to maintain its shape. The cytoskeleton is also involved in cell movement.

Question 5: nuclear envelope

Answer:

surrounds the nucleus and controls what goes in and out of the nucleus through the nuclear pores

Question 6: chromatin

Answer:

DNA bound to protein and contained in the nucleus of the cell

Question 7: Endocytosis

Answer:

The process of taking material into the cell by means of pockets of the cell membrane. The pocke breaks loose forming a vacuole within the cytoplasm. This is a form of active transport--requiring energy.

Question 8: nucleus

Answer:

The cell organelle that contains the cells DNA. The DNA in the nucleus contains the coded instructions for making proteins and other important molecules. The nucleus is the "brain" of the cell.

Question 9: Nucleolus

Answer:

Small, dense region within the nucleus of many cells that is the site where ribosomes are made.

Question 10: Chromosome

Answer:

Threadlike structure within the nucleus containing the genetic information that is passed from one generation to the next.

Question 11: prokaryotes

Answer:

Cells that have genetic material that is NOT contained in a nucleus

Question 12: Flagella

Answer:

A whip-like structure that provides a cell with the ability to move from place to place.

Question 13: Cilia

Answer:

Short hairlike projections similar to flagella which produce movement in many cells.

Question 14: cell

Answer:

basic units of life

Question 15: cell theory

Answer:

All living things are composed of cells. Cells are the basic units of structure and function in living things.New cells are produced from existing cells.

Question 16: Chlorophyll

Answer:

Principle pigment of plants and other photosynthetic organisms. This pigment captures light energy.

Question 17: Cell Wall

Answer:

Strong supporting layer around the cell membrane in plants, algae and some bacteria. NOTE: ANIMAL

CELLS DO NOT HAVE CELL WALLS.

Question 18: Active Transport

Answer:

Energy requiring process that moves material across the cell membrane against a concentration

gradient. For example: from a lower concentration to a higher concentration.

Question 19: Cytoplasm

Answer:

Material inside the cell membrane but outside of the nucleus in which all of the organelles float.

Question 20: Exocytosis

Answer:

The membrane of a vacuole fuses with the cell membrane forcing the contents of the vacuole out of the cell. This is an example of active transport--requiring energy.

Question 21: Phagocytosis

Answer:

Extensions of cytoplasm surround a particle and package it within a food vacuole. The cell then engulfs it. The requires energy and is a form of active transport.

Question 22: Cell specialization

Answer:

The process in which cells throughout an organism can develop in different ways to perform different

tasks. Examples: Neurons--nerve cells. Red Blood Cells

Question 23: Golgi apparatus

Answer:

This organelle modifies, sorts, and packages proteins and other materials as they come off the endoplasmic erticulum for storage in the cell or secretion outside the cell. The packaging and shipping center. Like FedEx!

Question 24: chromatid

Answer:

One of two identical "sister" parts of a duplicated chromosome

Question 25: Facilitated Diffusion

Answer:

Molecules that cannot diffuse across the cell membranes bilipid layer move through protein channels within the membrane instead.

Question 26: Mitochondria

Answer:

Cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use. Where the process of cellular respiration takes place. The "battery" of the cell

Question 27: ribosomes

Answer:

The organelle in the eukaryotic cell that is responsible for protein synthesis (manufacture).