Top answers

Biology
IB

Define Enzyme and Active site

Enzymes are biological catalysts that are formed from globular proteins.

Active site is the molecule surface space where the substrate binds and catalysi...

Answered by Xin Yan H. Biology tutor
5478 Views

State the source, substrate, products and optimum pH of one amylase, one protease, and one lipase

Amylase (Salivary amylase)
Source: salivary glands in the mouth
Substrate: starch
Products: maltose
Optimum pH: 4.6-5.2

Protease (pepsin)<...

Answered by Louise H. Biology tutor
13183 Views

Explain the need for enzymes in digestion

Mechanical digestion breaks down large food particles into smaller ones, increasing the surface are to volume ratio. However, polymers present in food particles require a very long time to break down a...

Answered by Louise H. Biology tutor
2825 Views

(a) State four functions of proteins, giving a named example of each.

Proteins can function as 

1. Biological Catalysts: enzymes that decrease the activation energy of a reaction and facilitate the progression of chemical reactions

2. Hormones...

Answered by Tatiana S. Biology tutor
16285 Views

How does cell division occur?

Cell division can be divided under three main phases: 

- Interphase: actvie period in life of a cell when metabolic reactions occur, with protein synthesis and DNA replic...

Answered by Thea P. Biology tutor
1623 Views

We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences