Bio study Flashcards


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created 2 months ago by straightastudent
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Luque Questions
updated 2 months ago by straightastudent
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1

A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in its

A) nuclear matrix and extracellular matrix

B) mitochondria and Golgi apparatus

C) Golgi apparatus and extracellular matrix

D) nuclear pores and secretory vesicles

Golgi apparatus and extracellular matrix

2

In terms of evolution why does recombination between linked genes continue to occur?

A) Recombination is a requirement for independent assortment.

B) Recombination must occur or genes will not assort independently.

C) New allele combinations are acted upon by natural selection.

D) The forces on the cell during meiosis II always result in recombination.

E) Without recombination there would be an insufficient number of gametes.

New allele combinations are acted upon by natural selection.

3

During bacteria transduction a phage particle may carry pieces of bacterial DNA from one bacterium to another inside a viral protein coat.

True or false?

True

4

True or false if a molecule requires a protein for transport, it is considered an active transport?

...

5

During translation, amino acids are joined together via glycosidic bonds catalyzed by the rRNA portion of the ribosome?

True or false

False

6

The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are in the α form. Which of the following could amylase break down?

...

7

Match the cell wall with its appropriate component
- Archaea cell wall---->
- Animals cell wall---->
- Plant cell wall---->
- Fungi cell wall---->
- Diatoms cell wall---->

a) cellulose
b) chitin
c) sillica
d) no cell wall
e) psuedomurein

- Archaea cell wall----> psuedomurein
- Animals cell wall----> no cell wall
- Plant cell wall----> cellulose
- Fungi cell wall----> chitin
- Diatoms cell wall----> sillica

8

Suppose that exposure to a chemical mutagen results in a change in the sequence that alters the 5' end of intron 1 (I1). What might occur?

A) loss of the gene product

B) loss of E1

C) premature stop to the mRNA

D) inclusion of I1 in the mRNA

E) exclusion of E2

inclusion of I1 in the mRNA

9

Match the appropriate term

Element:

Compound:

Molecule:

...

10

What is the function of topoisomerase?

A) relieving strain in the DNA ahead of the replication fork
B) elongating new DNA at a replication fork by adding nucleotides to the existing chain
C) adding methyl groups to bases of DNA
D) unwinding of the double helix
E) stabilizing single-stranded DNA at the replication fork

relieving strain in the DNA ahead of the replication fork