Brainscape's Knowledge GenomeTM

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


See full index

Science > DNA and species > Flashcards

DNA and species Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What is a way to describe DNA in two words

A

Double helix

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

What are the four bases

A

A,TG and C

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

Which base goes with T

A

A

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

Which base goes with G

A

C

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

What does the four bases create on the double helix

A

A rung

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

What are the rungs connected by

A

Two spines

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

What molecule is responsible for inheritance of characteristics?

A

DNA

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

Where in the cell will you find this molecule?

A

Nucleus

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

What is this molecule made of?

A

Nucleotides

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

What is a genes function?

A

They are a set of instructions of the person’s behaviour and traits.

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

Name the two cells that fuse at fertilisation

A

Egg and sperm

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

How many chromosomes would you expect to find in a human gamete cell

A

46

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

What word is used to describe these cells because of this?

A

Multicellular

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

How many chromosomes would you expect to find in a normal human body cell?

A

23

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

How many chromosomes would you expect to find in a normal human body cell?

A

Multicellular

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

What two chromosomes are responsible for genetic gender

A

X and Y

17
Q

What combination of these two chromosomes would you expect in a female

A

XX

18
Q

What combination of these two chromosomes would you expect in a male

A

XY

19
Q

Name the two types of cell division and say when they occur

A

Mitosis- Making new body cells and occurs when more body cells are needed.
Meiosis- When a single cell divides into four then these are the sex cells

20
Q

Explain why you have similarities to your parents, but you are not identical to them.

A

You get half of your genetic information from your mother and half from your father so you inherit features from both parents meaning you could not be identical to one of them.

21
Q

Why do identical twins look identical?

A

Identical twins come from the same zygote but split in half meaning they both have the same genes.

22
Q

Define drug

A

A medicine of substance which has a physiological effect when ingested or introduced to the body.

23
Q

Define addiction

A

Compulsive physiological need for and use of a habit-forming substance

24
Q

Define reaction time

A

The length of time taken for a person’s system to respond to a given stimulus or event.

25
Q

Define cancer

A

An abnormal growth of cells which tend to increase rapidly in an uncontrollable way

26
Q

Define carcinogen

A

Agents capable of initiating the development of tumors and causing cancer.

27
Q

Suggest why people still smoke despite the harm it can cause them.

A

People still smoke because it becomes addictive so they find it very hard to give up once they have started.

28
Q

Describe the short term effects of alcohol abuse

A

Slowed reaction time, reduces speed of pumping blood, opens up blood vessels, makes you feel warm, urinate more, extra fat in the liver

29
Q

Describe the long term effects of alcohol abuse

A

Cancer, liver cells can die from too much fat, have a red nose from open blood vessels, death, heart disease/attack

30
Q

Alcohol is a depressant. Describe the effect that alcohol might have on reaction time.

A

Alcohol causes the nervous system to carry impulses slower. This slows the reaction time and can cause brain damage.

31
Q

Caffeine is a stimulant. Describe the effect that caffeine might have on reaction time

A

Caffeine causes the nervous system to carry impulses faster. This increases reaction time.

32
Q

Describe a test you might carry out to find someone’s reaction time.

A

You could have a button to press when a sound goes off and the button times the reaction time of pressing the button.

33
Q

Name the 5 kingdoms and state their key features

A

Fungi- Has a nucleus and cell wall is multicellular and unicellular (yeast)
Protoctista- Has a nucleus and cell wall some are multicellular but most are unicellular
Plants- Has a nucleus and cell wall is multicellular
Animals- Has a nucleus and no cell wall is multicellular
Prokaryotes Has no nucleus and no cell wall and is unicellular

Science (5 decks)

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