WorksheetsISTEP Biology Review 1
Total questions: 12
Worksheet time: 8mins
Name
Class
Date
1.
Which of the following biological molecules are used by the body as a source of quick energy?
a)
carbohydrates
b)
protein
c)
fat
d)
nucleic acids
2.
Which cell part is used by the cell to make proteins?
a)
Golgi complex
b)
Endoplasmic reticulum
c)
ribosome
d)
chloroplast
3.
Which of the following molecules is needed by the mitochondria to do cellular respiration?
a)
water
b)
carbon dioxide
c)
oxygen
d)
nitrogen
4.
Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers?
a)
Rabbits have a high death rate.
b)
There are few effective predators.
c)
Additional rabbit species have been introduced.
d)
There is an increase in rabbit competitors.
5.
A base sequence is shown below.
ACAGTGC
How would the base sequence be coded on mRNA?
ACAGTGC
How would the base sequence be coded on mRNA?
a)
TGTCACG
b)
GUGACAU
c)
UGUCACG
d)
CACUGUA
6.
New heritable characteristics can result from
I.the recombination of genes during meiosis.
II.the formation of daughter cells during mitosis.
III.mutations in the genes found in sex cells.
IV.mutations in the genes found in non-sex cells.
I.the recombination of genes during meiosis.
II.the formation of daughter cells during mitosis.
III.mutations in the genes found in sex cells.
IV.mutations in the genes found in non-sex cells.
a)
I, II, III only
b)
I and III only
c)
II and IV only
d)
I, II, III, and IV
7.
In certain breeds of dogs, deafness is due to a recessive allele (d) of a particular gene, and normal hearing is due to its dominant allele (D). What percentage of the offspring of a normal heterozygous (Dd) dog and a deaf dog (dd) would be expected to have normal hearing?
a)
0%
b)
25%
c)
50%
d)
100%
8.
Which of these best illustrates natural selection?
a)
An organism with favorable genetic variations will tend to survive and breed successfully.
b)
A population monopolizes all of the resources in its habitat, forcing other species to migrate.
c)
A community whose members work together utilizes all existing resources and migratory routes.
d)
The largest organisms in a species receive the only breeding opportunities.
9.
Rhoda set up an experiment in a dark room with some water and some Elodea (a plant totally submerged in water) as shown in the diagram. Water enriched with carbon dioxide was used in this experiment. A light source was placed 50 cm away from the beaker.
She counted the number of bubbles produced by the elodea in one minute. Then she repeated the experiment by decreasing the distance between the light source and the beaker and counted the number of bubbles produced again recording her data in the table. Which of the following conclusions can Rhoda make from the results?
She counted the number of bubbles produced by the elodea in one minute. Then she repeated the experiment by decreasing the distance between the light source and the beaker and counted the number of bubbles produced again recording her data in the table. Which of the following conclusions can Rhoda make from the results?
a)
The rate of photosynthesis is higher in blue light than in green light.
b)
The higher the intensity of light, the higher the rate of photosynthesis.
c)
The light source must be 20 cm away from the Elodea plant so that it can photosynthesize at the highest rate.
d)
The nearer the light source to the Elodea plant, the more the plant will respire and photosynthesize to produce more bubbles of oxygen and carbon dioxide.
10.
Which of the following variables should be kept the same for the experiment to be a fair test?
A. Type of light source
B. Amount of Elodea plant
C. Distance between light source and beaker
A. Type of light source
B. Amount of Elodea plant
C. Distance between light source and beaker
a)
A and B only
b)
B and C only
c)
A and C only
d)
A, B, and C
11.
James wanted to investigate the effect of fertilizer on String Bean seedlings. He planted 4 pots of String Bean seedlings. The results after 15 days are shown by the table. James was told that he needed a 'control' to measure his results against.
Which seedling should James use as the 'control' for his experiment?
Which seedling should James use as the 'control' for his experiment?
a)
P
b)
Q
c)
R
d)
S
12.
5' ATCAGCGCTGGC 3'
The above sequence of DNA is part of a gene. How many amino acids are coded for by this segment?
The above sequence of DNA is part of a gene. How many amino acids are coded for by this segment?
a)
4
b)
8
c)
12
d)
20
100 %
