Written by students who passed Immediately available after payment Read online or as PDF Wrong document? Swap it for free 4.6 TrustPilot
logo-home
Document preview thumbnail
Preview 4 out of 108 pages
Exam (elaborations)

BIOLOGY A-LEVEL SALTERS-NUFFIELD PAPER 1 (SNAB) QUESTIONS WITH COMPLETE SOLUTIONS

Document preview thumbnail
Preview 4 out of 108 pages

BIOLOGY A-LEVEL SALTERS-NUFFIELD PAPER 1 (SNAB) QUESTIONS WITH COMPLETE SOLUTIONS

Content preview

How do TB bacteria target the cells of the immune system


No worries, learning is a process!


if the same pathogen enters they suppress T cells which
the body again the immune reduces antibody production
system will produce a quicker and attack by killer T cells.
stronger immune response.
the b memory cells produced
in the primary response can
differentiate immediately to
produce plasma cells and
release antibodies.




basic structure of a virus


Give this one a try later!

, a strand of nucleic acid (DNA or RNA) enclosed within a protein coat




What is lactose made of?


Give this one a try later!


One glucose and one galactose molecule, joined by beta 1,4 glycosidic
bondd




What are the risks of anticoagulants?


Give this one a try later!


Can cause excessive bleeding, dosage control is essential




What is the causal link between cholesterol levels and CVD risk?


Give this one a try later!


Cholesterol helps form plaques (this could be the link between cholesterol
ratio and CVD risk)




Tubercles


Give this one a try later!

, the immune system seals off the infected phagocytes in these structures




Why is some energy lost?


Give this one a try later!


roots of plants and bones of animals are digested and passed onto
decomposers




Antibodies


Give this one a try later!


bind to antigens to form an antigen-antibody complex




exons


Give this one a try later!


coding sections of DNA




Why use daphnia?


Give this one a try later!

, Abundant, easily obtained, transparent so no need for dissection, simple
nervous system




What happens as TB progresses


Give this one a try later!


it damages the lungs and can cause respiratory failure which can lead to
death




What do the receptors on T cells do


Give this one a try later!


bind to antigens displayed by antigen presenting cells, such as
macrophages




Modern drug testing phase 1


Give this one a try later!


tested on small group of healthy patients

small dosage to test for side effects




Passive artifical immunity

Document information

Uploaded on
July 21, 2026
Number of pages
108
Written in
2025/2026
Type
Exam (elaborations)
Contains
Questions & answers
$11.50

Wrong document? Swap it for free Within 14 days of purchase and before downloading, you can choose a different document. You can simply spend the amount again.
Written by students who passed
Immediately available after payment
Read online or as PDF

Sold
3
Followers
0
Items
1010
Last sold
3 weeks ago




Why students choose Stuvia

Created by fellow students, verified by reviews

Quality you can trust: written by students who passed their tests and reviewed by others who've used these notes.

Didn't get what you expected? Choose another document

No worries! You can instantly pick a different document that better fits what you're looking for.

Pay as you like, start learning right away

No subscription, no commitments. Pay the way you're used to via credit card and download your PDF document instantly.

Student with book image

“Bought, downloaded, and aced it. It really can be that simple.”

Alisha Student

Working on your references?

Create accurate citations in APA, MLA and Harvard with our free citation generator.

Working on your references?

Frequently asked questions