Diction

Question 1

Electrolytes

Answer 1

A water soluble ionic compound that can conduct electricity - allowing for nerve and muscle functions to occur.

Question 2

PH Scale

Answer 2

Meaurement of the hydrogen ion concentration in a solution.
0 - Acidic
7 - neutral
14 - Alkaline

Question 3

Nucleotide

Answer 3

A sugar, phosphate and base.

Question 4

Adenosine phosphate (ATP) and where is it synethesise?

Answer 4

Nucleotide built from ribose, adenosine and three phosphates groups attached to the ribose.

Energy current to the body

In the mitochondria

Question 5

Adenosine diphosphate (ADP) and functions

Answer 5

ATP is broken into ADP

Fuels muscle contractions
Anabolic reactions
Motility of spermatozoa
Transport material across membranes

Question 6

Enzyme

Answer 6

Enzymes are Protein that catalyse biochemical reactions

Question 7

Homeostasis

Answer 7

Composition of the internal environment is tightly controlled and Fairly constant attention

Unchanging

Question 8

What happens if there’s an imbalance to homeostasis?

Answer 8

A serious risk to well being

Question 9

Negative feedback

Answer 9

Response to a stimuli to Reverse effects that have changed, back to the normal level to create a steady state.

Negative = negate (reverse)

Question 10

Positive feedback

Answer 10

The stimulus is progressively increases response

Response amplifies what is already there

Example- oxytocin continues to be orifices as the cervix stretches during labour.

Question 11

Diffusion

Answer 11

Movement from an area of high concentration to low concentration

Question 12

Osmosis

Answer 12

Movement across semi permanent membrane resulting in equal concentration

Question 13

Active transport

Answer 13

Moving up the concentration gradient

Needs energy

Question 14

Mitochondria

Answer 14

Powerhouse of the cell

The memberous structure that is central to aerobic respiration, where chemical energy is released in the form of ATP when the cells break it down.

Synthesises of ATP is most efficient in the final stages of aerobic respiration (oxygen required).

Question 15

Nucleus

Answer 15

Contains genetic information in the form of DNA that directs al of the metabolic activities.

DNA is presented as a fine network of threads = chromatin.
In preparation to cell division, the chromatids forms distinct structures = chromosomes.

Question 16

Ribosome

Answer 16

Composed of RNA and proteins.

Make proteins for use within the cell, including enzymes required for metabolism.