Practical Exam 1

Question 1

Number of fingers

Answer 1

discontinuous

Question 2

Waistline

Answer 2

continuous

Question 3

Body temperature

Answer 3

continuous

Question 4

Handedness

Answer 4

discontinuous

Question 5

Eye vision

Answer 5

continuous

Question 6

A cell generates ATP via aerobic
respiration. Which stages of this
process happen in the
mitochondria?

Answer 6

CITRIC ACID CYCLE AND ELECTRON
TRANSPORT CHAIN

Question 7

This process describes how the
plasma membrane forms pathways
that detect signals from outside the
cell and transmit them inward.

Answer 7

SIGNAL TRANSDUCTION

Question 8

In Tay-Sachs disease, an enzyme that normally breaks
down lipids in the cells is deficient. As the nervous
system becomes buried in lipid, an infant begins to lose
skills e.g. sight, hearing, and the ability to move.
Which cellular organelle is affected in this kind of
disease?

Answer 8

LYSOSOMES

Question 9

Ribosomes are important such that they
synthesize proteins and amino acids via
Translation.

Where are Ribosomes being synthesized?

Answer 9

NUCLEOLUS

Question 10

During which process,
surviving override signals telling
the cell to die, so that division
rather than death occurs.

Answer 10

APOPTOSIS CHECKPOINT

Question 11

Human cheek cell during Anaphase

Answer 11

92 chromosomes

Question 12

Human red blood cell

Answer 12

0

Question 13

Sperm cell of fruit fly (2n= 8)

Answer 13

4

Question 14

Egg cell of dog (2n= 78)

Answer 14

39

Question 15

Skin cell of cat (2n= 38)

Answer 15

38

Question 16

The process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.

Answer 16

Anaphase

Question 17

The kinetochore microtubules pull the sister chromatids back and forth until they align along the equator of the cell, called the equatorial plane.

Answer 17

Metaphase

Question 18

The physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells.

Answer 18

Cytokinesis

Question 19

What happens when a cell
has reached the end of its
telomeres?

Answer 19

THE CELL STOPS DIVIDING OR
DIES

Question 20

This process causesrandom
alignment of chromosomes during
Metaphase I, where the fate of a gene
on one chromosome is not influenced by
a gene on a different chromosome.

Answer 20

INDEPENDENT ASSORTMENT

Question 21

On which specific stage of
Meiosis crossing-over occurs?

Answer 21

PACHYTENE

Question 22

Mitosis

Answer 22

GROWTH AND REPAIR

Question 23

Meiosis

Answer 23

SEXUAL
REPRODUCTION/ GENETIC
DIVERSITY

Question 24

What is the importance of
crossing-over?

Answer 24

TO PRODUCE VARIATION/
GENETIC DIVERSITY

Question 25

Pair of the same
chromosomes that are not
exactly identical.

Answer 25

HOMOLOGOUS CHROMOSOMES

Question 26

Identical copies of
chromosomes after DNA
replication

Answer 26

SISTER CHROMATIDS

Question 27

On which stage of the cell
cycle is DNA being replicated?

Answer 27

S PHASE/ DNA SYNTHESIS PHASE

Question 28

The process by which nonsister chromatids of
homologous chromosomes
pair up.

Answer 28

SYNAPSIS

Question 29

Mitosis

Answer 29

2 IDENTICAL

Question 30

Meiosis

Answer 30

4 NON-IDENTICAL