Midcourse test pt 1 Flashcards

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

q1 What is the magnification of the plant cell? I =50mm

A

2.0x10^3

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

what bonds hold quaternary protein structure together? 2

A

hydrogen bonds and disulphide bonds

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

What relationships could be investigated with a colorimeter? 2

A

The effect of high intensity on the rate at which a solution of light sensitive dye changes from green to colourless

The effect of temperature on the rate of breakdown of cell membranes in tissues with pigmented cells, such as beetroot

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

Q4 read context, which statement correctly explains a response to ethanol that could account for the increase in tolerance of yeast cell membranes to ethanol?

A

Increasing the proportion of palmitoleic acid (a C16 unsaturated fatty acid) to oleic acid (a C18 unsaturated fatty acid) in the phospholipids of the bilayer increases fluidity of the cell membrane

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

Q5 read context, what will happen in the second investigation after 5 minutes?

A

Water molecules will enter and leave the cell in equal amounts both at an initial rate that is less than R in the first investigation

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

What does adenine pair with in DNA?

A

Thymine

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

What does adenine pair with in RNA?

A

Uracil

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

What does Guanine pair with?

A

Cytosine

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

What bases are pyrimidines?

A

Uracil, thymine, and cytosine

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

What bases are purines?

A

Adenine and guanine

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

What type of bases are the DNA and RNA bases?

A

Nitrogenous

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

Which bases have two rings in their structure?

A

adenine and guanine

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

which bases have one ring in their structure?

A

Uracil, thymine and cytosine

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

Q6 which statements about this nucleotide are correct? (can actually look at multiple choice)

A

1,2 and 3

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

Q7 which description if the cross section of F correctly states what the students could actually see?

A

circular

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

A student used Benedict’s solution to test a sample known to contain carbohydrate. At the end of the test, the solution was blue. Which carbohydrate could be present?

A

sucrose

17
Q

Q9 what sugar could be represented by the linear structure?

A

glucose

18
Q

Q10 which row describes protein structure?

A

C

19
Q

Draw the general structure of an amino acid

A

See Q 11 a

20
Q

Q11 b) calculate the rate of reaction when the standard brown colour was reached in 2 minutes 30 seconds

A

0.4

21
Q

Q11 b) ii) ( look at graph & read Q 11 b context on prev pg) state how the results shown in fig 11.3 show that the substrate was in excess at all concentrations of catechol oxidase tested

A

the line continues rising with each concentration and doesn’t reach a plateau