Palacky And Zagreb Exam

Question 1

By crossing Aa x Aa, what is the ratio of phenotypes in the offspring produced? Assume complete dominance for the trait.

Select one:

Answer 1

75% dominant:: 25% recessive

Question 2

Which statement is true of sickle cell anaemia?

Answer 2

A) It involves red blood cells.

B) It confers resistance to malaria.

D) It involves a one-amino-acid change in haemoglobin.

Question 3

an individual with Turner syndrome

Answer 3

short stature, characterized by 45x genotype, is female

Question 4

Identify the correct structure of a nucleotide of DNA

Answer 4

phosphate-deoxyribose-adenine

Question 5

Which statement is not true of the nuclear envelope?

Answer 5

it’s inner membrane bears ribosomes

Question 6

Mesozoic era into time periods

Answer 6

Triassic Jurassic cretaceous

Question 7

pepsin is produced in

Answer 7

stomach

Question 8

part of neuron that brings the impulse into the neurocyte

Answer 8

dendrite

Question 9

which organelles are responsible for intracellular respiration

Answer 9

mitochondria

Question 10

we study the flow of energy through an ecosystem, we describe three types of organisms:
producers, consumers, and:

Answer 10

decomposers

Question 11

the nuclear membrane

Answer 11

.contains pores

F.controls the transport between the nucleus and cytoplasm

Question 12

For G2phase of cell cycle is typical:

Answer 12

follows after S phase of cell cycle, and includes the replication of mitochondria and other organelles

Question 13

Parents are O and AB blood groups. Their children could have blood groups:

Answer 13

50% A and 50% B, and different from parents blood groups

Question 14

The most common aneuploidy in newborns is

Answer 14

trisomy of chromosome 21 and downs syndrome

Question 15

Lipids are organic compounds that in a living cell may combine with:

Answer 15

proteins and polysacharrides

Question 16

Smooth endoplasmic reticulum is found in:

Answer 16

eukaryotes

Question 17

A prokaryotic cell does not contain:

Answer 17

nucleolus

Question 18

The rough ER is so named because it has an abundance of ________ on it.

Answer 18

ribosomes

Question 19

Animal and plant cells share the same structures except for:

Answer 19

thylakoid

Question 20

Proteins embedded in a lipid bilayer” best describes the following structure:

Answer 20

cell membrane

Question 21

ATP is required in the transport of:

Answer 21

low to high concentration against CG

Question 22

nucleus contains

Answer 22

nucleoplasm and chromatin

Question 23

Prior to cell division, each chromosome replicates its genetic material. The

products are connected by a centromere and are called:

Answer 23

sister chromatids

Question 24

During meiosis, any of the two chromosomes belonging to the whole chromosome set, randomly:

Select one:

Answer 24

ne:

a. become paired
b. exchange genetic material
c. are subjected to crossing over
d. all is false

e. all is true
D all is false !

Question 25

Different types of cells produced during oogenesis are called

Answer 25

oogocyuim oocyte and polar body

Question 26

Spermatogenesis gives rise to spermatides which are:

Answer 26

haploid and precursor of spermatozoa

Question 27

In humans, fertilization of an egg normally takes place when the sperm and egg unite in the:

Answer 27

fallopian tube

Question 28

The membrane which forms a sac, filled with fluid, that serves as a protection for the developing embryo is the:

Answer 28

Amnion

Question 29

Conjugation, transformation and transduction are connected to:

Answer 29

bacteria

Question 30

Genetically identical organisms derived from a single genetic source are called:

Answer 30

clones

Question 31

All mentioned below about DNA structure is correct EXCEPT:

Answer 31

deoxyribose and a base form a nucleotide

Question 32

codon

Answer 32

is a triplet

Question 33

For transcription the DNA polymerase is used.true or false

Answer 33

false

Question 34

M-phase of the cell cycle is comprised of:

Select one:

Answer 34

mitosis and cytokenisis

Question 35

The result of the monohybrid cross in the F2 generation is a characteristic 3:1 ratio of:

Select one:

Answer 35

dominant : recessive phenotypes

Question 36

Find the wrong statement among the following that are true for more than two alternative forms of a single gene:

Select one:

Answer 36

All of them can be found in the single individual.

Question 37

n a dihybrid cross parental generation can consist of parents that are:

Answer 37

both homozygous for both traits

Question 38

In the classical test cross, the testing of the dominant phenotype is always done with:

Answer 38

a recessive homozygote

Question 39

hemophilia is a hereditary

Answer 39

x linked disease

Question 40

Recombination of genes is the result of all except:

Select one:

Answer 40

chiasma

Question 41

Which disease is usually not the result of a mutation:

Answer 41

haemoloysis

Question 42

What does a restriction enzyme do?

Select one:

Answer 42

cuts DNA in specific sites

Question 43

Hearts own pacemaker is called:

Answer 43

sinoatrial node

Question 44

Appendix (vermiform) is an outgrowth of the:

Answer 44

colon

Question 45

Oxygen is transported from lungs to tissues:

Answer 45

bounded to haemoglobin in erythrocytes

Question 46

A concentration of carbon dioxide in the blood stimulates the breathing center in the:

Select one:

Answer 46

medulla oblongata

Question 47

The majority of oxygen in the bloodstream is carried in red blood cells on a globular protein called:

Answer 47

hemoglobin

Question 48

adrenal cortex produced

Answer 48

androgens and oestrogen

Question 49

olfaction is

Answer 49

sense of smell

Question 50

spleen and lymph nodes are part of the

Answer 50

immune system

Question 51

Ecology is the study of the interrelationships between organisms and their:

Answer 51

living and nonliving environment

Question 52

Cromagnon and Neanderthal men are:

Select one:

Answer 52

fossil men and cave dwellers

Question 53

Cromagnon and Neanderthal men are:

Select one:

Answer 53

fossil men and cave dwellers

Question 54

A region that has a characteristic set of environmental conditions and consequently a particular type of fauna and flora is called:

Answer 54

biotope