Complete Biological Science 6TH Edition Freeman Questions and 100% Correct Answers | Verified

Complete Biological Science 6TH Edition Freeman Questions and
100% Correct Answers | Verified



QUESTION :Nucleus -Ans.A part of the cell containing DNA and RNA and responsible for growth and
reproduction




QUESTION :Mitochondria -Ans.An organelle found in large numbers in most cells, in which the
biochemical processes of respiration and energy production occur. They produce ATP




QUESTION :Ribosomes -Ans.A small granule of RNA and protein which synthesises protein form
amino acids

QUESTION :Endoplasmic Reticulum -Ans.A series of interconnected membranous canals in the
cytoplasm

QUESTION :Rough Endoplasmic Reticulum -Ans.An endoplasmic reticulum which is studded with
ribosomes and is the site of protein synthesis and where they are exported from the cell

QUESTION :Smooth Endoplasmic Reticulum -Ans.An endoplasmic reticulum which is not studded
with ribosomes and is the site of synthesis for lipids and steroid hormones, it is also associated with
the detoxification of some drugs

QUESTION :Golgi Apparatus -Ans.A closely folded stack of membranes. Proteins are moved through
this organelle and are 'packaged' into vesicles which are stored and, when needed, moved to the
plasma membrane and exocytosed

QUESTION :Lysosomes -Ans.A small vesicle which is pinched off from the Golgi Apparatus and
contains enzymes which are involved in breaking down fragments of organelles and large molecules
(e.g. RNA, DNA, carbohydrates and proteins)




QUESTION :Cytoskeleton -Ans.An extensive network of tiny protein fibres, it includes
microfilaments, microtubules, centrosomes and cell extensions



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,QUESTION :Microfilments -Ans.These are the smallest fibres which provide structural support,
maintain characteristic shape of the cell and permit contraction




QUESTION :Microtubules -Ans.This organelle is the smallest fibre that is involves in the movement
of:

- Organelles within the cell

- Chromosomes during cell division

- Cell extensions




QUESTION :Centrosome -Ans.This organelle directs the organisation of microtubules within the cell.
It consists of a pair of centrioles and plays and important role in cell division




QUESTION :Cell extension -Ans.These organelles project from the plasma membrane in some types
of cell and their main components are microtubules , which allow movement, these include
microvilli, cilia and flagella




QUESTION :Microvilli -Ans.These organelles contain microfilaments. They cover the exposed surface
of certain types of cell, by increasing the surface area and increase absorption




QUESTION :Cilia -Ans.These organelles are microscopic hair-like projections containing microtubules
which lie along the free border of some cells and move substances along its surface




QUESTION :Flagella -Ans.This organelle is a single, long whip-like projection which contains
microtubules, which propels the cell




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,QUESTION :Osmosis -Ans.The movement of particles form an area of high concentration to an area
of low concentration through a semi-permeable membrane




QUESTION :Diffusion -Ans.The movement of molecules from an area of high concentration to an
area of low concentration




QUESTION :Passive transport -Ans.This occurs when substances can cross the semipermeable
plasma and organelle membrane and move down the concentration gradient without using energy




QUESTION :Facilitated diffusion -Ans.This is a passive process used by some substances that are
unable to diffuse through semipermeable membrane unaided. Specialised protein carrier molecules
bind to the the substances and carry it through the membrane




QUESTION :Bulk transport -Ans.Transfer of particles too large to cross cell membranes occurs by
pinocytosis or phagocytosis




QUESTION :Pinocytosis -Ans.This allows cells to bring in fluid




QUESTION :Phagocytosis -Ans.This allows cells to take in larger molecules




QUESTION :What does blood transport -Ans.Oxygen, nutrients, hormones, immune system
components and waste products




QUESTION :Plasma and formed elements -Ans.What makes up whole blood?




QUESTION :What does plasma consist of? -Ans.Water, dissolved plasma proteins and other solutes




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, QUESTION :Three general characteristics of blood -Ans.38C, high viscosity and slightly alkaline




QUESTION :7% -Ans.What percentage of the body weight does blood make up




QUESTION :RBCs, WBCs and platelets -Ans.What are the three formed elements?




QUESTION :Transports oxygen -Ans.What is the function of a RBC




QUESTION :Immune response -Ans.What is the function of a WBC




QUESTION :Helps in clotting process -Ans.What is the function of a Platelet




QUESTION :50-60% -Ans.How much of blood does plasma make up?




QUESTION :90% -Ans.How much of plasma is made up of water




QUESTION :Albumins, Globulins and Fibrinogen -Ans.What are the three plasma proteins?




QUESTION :60% -Ans.Albumins make up how much of plasma?




QUESTION :35% -Ans.Globulins make up how much of plasma?




QUESTION :4% -Ans.Fibrinogen makes up how much of plasma?




QUESTION :Transports fatty acids and hormones -Ans.What are the function of Albumins?

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