Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Biomedicine > Yr1 Chemistry and Biochemistry I > Flashcards

Yr1 Chemistry and Biochemistry I Flashcards

1
Q

What is chemistry?

A

Science that deals with the composition and properties of substances and elementary forms of matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is biochemistry

A

Science concerned with the chemical and physical chemistry processes of substances in living organism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is matter

A

Everything around us that has mass and occupies space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are atoms

A

Particles that make up matter. Lego bricks that make everything in the universe.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the three elements of atoms?

A

Electrons, protons and neutrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is an element?

A

A substance make from one type of atom so it cannot be split

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Chemical symbol of hydrogen

A

H

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Chemical symbol of calcium

A

Ca

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Chemical symbol of carbon

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Chemical symbol of magnesium

A

Mg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How many elements in the human body

A

26

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the 4 major elements in the human body?

A

Carbon, hydrogen, oxygen & nitrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does Fe mean?

A

Iron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What percentage of the human body is made from carbon, hydrogen, oxygen and nitrogen?

A

96%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What forms the nucleus of a atom?

A

Proton plus neutron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What has a positive charge and mass of approx 1 atomic unit

A

Proton

17
Q

What has no charge and mass of approx 1 atomic unit

A

neutrons

18
Q

What are electrons?

A

negatively charged particles that buzz around a nucleus creating an electron cloud.
They have virtually no mass.

19
Q

How does an atom have an overall neutral charge?

A

It has an equal number of electrons and protons

20
Q

How are electrons grouped?

A

In pairs

21
Q

What is an electron shell?

A

Pairs of neutrons moving around the nucleus

22
Q

How does an atom become reactive?

A

If the outer shell loses and electron

23
Q

Why is an atom like a family?

A

Proton is an adult with one electron child
Neutron is an adult with no children
Adults hang out together in the nucleus and weigh 1
Children weight virtually nothing and buzz around

24
Q

What determines the chemical properties of an atom?

A

Number of protons and electrons

25
Q

What does the number of an element on the periodic table mean? TOP

A

How many protons and therefor how many electrons.

26
Q

What does the number of an element on the periodic table mean? BOTTOM

A

Atomic mass / weight

27
Q

What do all of the elements in column one of the period table have in common?

A

React with water - further down the more vigorous reaction

28
Q

What do floride, chlorine, bromine, iodine and astatine have in common?

A

Halogens

29
Q

What is the relevance of the halogens for thyroid health

A

Iodine is required for thyroid hormones (T3 & T4). Fluoride and chloride can inhibit iodine absorption

30
Q

Where would you find fluoride and chloride?

A

Toothpaste, tap water, mouthwashes, swimming pools and chlorinated washed vegetables

31
Q

What is an isotope?

A

Atoms of the same element with a different number of neutrons in the nucleus

32
Q

How can isotopes before unstable

A

When the have a big imbalance of protons compared to neutrons in their nucleus

32
Q

What’s different about isotopes and what’s the same

A

Same - chemical activity
Different - atomic mass

32
Q

How can isotopes cause radiation

A

When they have more protons than neutrons in their nucleus

32
Q

How are isotopes used in medicine

A

Some diagnostic methods use radioactive tracers which emit gamma rays

33
Q

How does radio therapy use isotopes

A

It uses gamma rays from radioactive isotopes to target rapidly dividing cells

34
Q

What is a negative of radiotherapy

A

It also damages healthy tissues

35
Q

Which test usings radioactive carbon-14 or non-radioactive carbon-13?

A

Breath test for H pylori

Biomedicine (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions