Question 1

Question

Which RNA carries amino acids to the ribosome during translation?

a
mRNA
b
drRNA
c
rRNA
d
tRNA
Question 2
Which table correctly describes the difference between DNA and RNA?

A.

B.

C.

D.

a
A
b
B
c
C
d
D
Question 3
This question REPLACES the Unit 6 Lesson 9 discussion.

This is worth 4 points of your total weekly recap quiz.

Please do your best, you have unlimited chances for DNA mastery!

7 Magnificently Awesome Science Meme's! | Biology humor, Fun science, Science memes



DNA carries the cell’s genetic information; however, it cannot leave the .

Because of this, it copies part of its nucleotide sequence into a complementary copy of

during the process called .

During this process, the enzyme,

separates the DNA strands.

One strand of DNA acts as the

from which nucleotides are assembled into a strand of RNA.

Each three letter sequence on the mRNA is called a .

The start codon is and the three stop codons are .

Once the mRNA leaves the nucleus, it goes to the to prepare for protein

synthesis, which is called .

During this process, a molecule brings the to the ribosome.

The amino acids are hooked together by bonds.

The tRNA is able to match up to the mRNA by the in its anticodons.

When the codon is reached, the chain is released into the .



Word Bank:
complimentary basesmutationpeptidenucleuslysosomemRNAcodonlipidstRNAstophelicaseenzymerRNAstarttranslationtranscriptioncytoplasmribosomeproteinamino acidUAG UGA UAAAUGcarbohydrateABCtransponderDEF QRS,XYZtemplate
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Question 4
Farmers across many centuries have used selective breeding (artificial selection) to enhance certain qualities in their crops. Which of the following qualities would most likely be selected for in breeding?

a
decreased nutrient composition
b
decreased harvest production
c
resistance to harmful pests
d
bioluminescence for attraction to fireflies
Question 5
The picture shows a mutation that occurs when cells are exposed to UV radiation.

How can this mutation affect the new cells that are produced using this DNA? Select all that apply.
a
The new cells can become cancerous.
b
The new cells do not undergo mitosis.
c
The new cells shrink because they lose water.
d
The new cells are produced with this mutation.
e
The new cells absorb water and become larger.
f
The new cells do not contain DNA with this mutation.
Question 6
How can this individual be identified?

a
normal male
b
male with Down syndrome
c
normal female
d
female with Down syndrome
Question 7
A child is born with cystic fibrosis, an inherited recessive disorder. No one in the family (on either side) for several generations is known to carry the gene or have the disorder. How can this be explained?

a
The genetic disorder formed from the mother's poor nutrition and prenatal care.
b
There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
c
The child contracted the illness from another child when he was born.
d
The child developed the disorder when he was born; it is a result of a birth defect.

answer 1-6