1.
The DNA is a three dimensional structure that is accepted today and for which a nobel prize was later awarded, was first proposed and demonstrated by_____
2.
Avery, Macleod and Mccarty showed that the transforming principles consist entirely of DNA in what year?
3.
The group of organism that inhabit a particular area and interact with one another form a?
4.
Thymine (T) and Cytosine (C) are 2 types of
Hint
5.
Protein contain the following elements except
7.
Transpiration is high under which of the following conditions
8.
All but one of the following statements is correct
9.
One of the following is absent in chemical combination of DNA
10.
According to Griffith’s experiment in 1928 the mouse lives when
(i) injected with rough strain bacteria
(ii) injected with smooth strain bacteria
(iii) heat killed smooth bacteria +non heat killed Rough bacteria injected in mouse
(iv) injected with heat-killed smooth strain bacteriaDeselect Answer
11.
When a homozygous tall plant was crossed with a homozygous dwarf plant, the f1 offspring were selfed to produce the f2 offspring. What is the phenotypic and genotypic ratios respectively?
12.
The vegetable with botanical name Allium cepa is
13.
Which of the three conclusions of Theodore Schwann about cells was proven wrong?
14.
One of the following is incorrect about the difference between RNA and DNA
15.
______ is the main chemical components of the primary plant cell wall.
16.
The molecule called deoxyribonucleic acid (DNA) was discovered by Friedrich miescher in
17.
On of the following is not an example of DNA Replication
18.
During his experiment, Hooke actually saw the dead cell walls of plant cells (cork), and he published these description in a book called
19.
All the following are light illuminated except
20.
The terms 'in vivo' and 'in vitro' means _____ and _____ respectively
21.
--------- is known as the father of microscopy
22.
The finest known lenses that were produced around 1632-1723 produced magnifications up to about
23.
One of the following scientific discoveries was mismatched
a. 1674 – Leeuwenhoek discovered protozoa.
b. 1838 – Schleiden and Schwann proposed cell theory.
c. 1858 – Rudolf Virchow expounds his theory
d. 1959 – Siemens produced the first commercial TEM
e. 1965 – Cambridge Instruments produced the first SEM
f. 1985 – Tsien identifies mutant of GFP
g. 1989 – Hamilton and Baulcombe discover siRNADeselect Answer
24.
Some prokaryotes have a variety of shapes and sizes, this is referred to as
25.
The Botanical name of Sugarcane is
26.
Under blue light, Charles A. Spencer microscope could produce magnification up to about
27.
The study of detailed structure of tissues making up a particular organ is
28.
According to specific pairing in DNA molecules
29.
How many bases makes a codon?
30.
One of the following statements is incorrect
Hint