4/14 Science Assessment Blog

A pea plant’s cells have one allele for tallness (T) and one for shortness(t). According to Mendel’s law of segregation, which alleles could be passed on to the pea plant’s sex cells?

A. T or t

B. TT or tt

c. T, t, or Tt

d. TT, tt, or tt

2. A science student was asked to construct models of DNA and RNA sections. Which section is correctly constructed and should be placed into a DNA strand?

a. Ribose -phospahte- adenine

b. ribose-phosphate-thymine

c. deoxyribose-phosphate-uracil

d. deoxyribose-phosphate- cytosine

3. Which components are part of DNA and not RNA?

a. adenine, cytosine, thymine, guanine, and ribose sugar

b. adenine, cytosine, thymine, guanine, and deoxyribose sugar

c. adenine, cytosine, uracil, guanine, and ribose sugar

d. adenine, cytosine, uracil, guanine, and deoxyribose sugat

4.  Study the code below.

ATTGGCCATC

In order for the code to represent a piece of RNA. which base must be replaced by uracil?

A. adenine

b. thymine

c. guanine

d. cytosine

5. Which strand must be RNA and not DNA?

a. ATTCGGTA

B. CCTTCATGC

C. CCUACCUUA

D. TTGCGGCCATT