Question 1

A sperm cell is the only type of human cell that contains a _____,which is a whip-like structure that helps propel the sperm towards an oocyte.

Accepted Answer

A) cilium 
B) flagellum 
C) mitochondria 
D) centrosome 
E) microvillus

Question 2

[dropdown 1] RNA is translated by ribosomes and codes for the amino acids in the protein.[dropdown 1] RNA combines with protein to from the 2 subunits.[dropdown 1] RNA moves amino acids to the ribosomes for protein synthesis.
Dropdown Choices:
messenger
ribosomal
transfer

Accepted Answer

The answer of [dropdown 1] RNA is translated by ribosomes...

Question 3

In the diagram,which panel shows events occurring during anaphase?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E

Question 4

Which of the following membrane-enclosed organelles is the site of synthesis of membrane proteins and secretory proteins?

Accepted Answer

A) rough endoplasmic reticulum 
B) smooth endoplasmic reticulum 
C) nucleus 
D) lysosome 
E) Golgi complex

Question 5

The following is a particular sequence of base triplet on a DNA molecule: ATG.What is the corresponding codon for the mRNA?

Accepted Answer

A) TAC 
B) GUA 
C) GTA 
D) CTA 
E) UAC

Question 6

Which of the following does NOT influence the rate of diffusion of a chemical across a plasma membrane?

Accepted Answer

A) concentration gradient of the chemical across the membrane 
B) mass of the diffusing chemical 
C) distance that the chemical has to diffuse 
D) amount of ATP available 
E) temperature

Question 7

What structural components of the membrane are labeled (C)in the diagram?

Accepted Answer

A) peripheral proteins 
B) cholesterol molecules 
C) pores 
D) integral proteins 
E) phospholipids

Question 8

transfer RNA is released from the [dropdown 1] site.A ribosome moves down a codon when the bond forms between the peptide in the [dropdown 2] site and the amino acid in the [dropdown 3] site.
Dropdown Choices:
A
E
P

Accepted Answer

The answer of transfer RNA is released from the [dropdown...

Question 9

This type of membrane protein enables cells to catalyze specific chemical reactions at the inner or outer surface of their plasma membrane.

Accepted Answer

A) receptors 
B) phospholipids 
C) cholesterol 
D) enzymes 
E) ligands

Question 10

Which of the following is a measure of a solution's ability to change the volume of cells by altering their water content?

Accepted Answer

A) filtration 
B) normality 
C) tonicity 
D) equivalency 
E) facilitation

Question 11

In the diagram,which panel shows the kinetochore of the centromeres aligning along the center of the mitotic spindle of the cell?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E

Question 12

In the diagram,which panel shows cells that are in interphase?
1 A
2 C
3 F

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 1 and 3 
E) 1,2,and 3

Question 13

Briefly describe alternative splicing.

Accepted Answer

The answer of Briefly describe alternative splicing....

Question 14

What are the three main parts of a human body cell?

Accepted Answer

A) plasma membrane,organelles,cytoplasm 
B) plasma membrane,organelles,nucleus 
C) plasma membrane,cytoplasm,organelles 
D) plasma membrane,cytoplasm,nucleus 
E) plasma membrane,cytosol,organelles

Question 15

In the diagram,which one represents a hypertonic solution

Accepted Answer

A) A 
B) B 
C) C 
D) Both B and C 
E) All of these choices are correct.

Question 16

Which cellular organelle is comprised of a pair of centrioles and the surrounding pericentriolar material.

Accepted Answer

A) cytoskeleton 
B) cilia 
C) centrosome 
D) flagella 
E) peroxisomes

Question 17

Which of the following shows ligand binding at the cell surface?

Accepted Answer

A) B 
B) C 
C) D 
D) A 
E) E

Question 18

An orderly,genetically programmed cell death is referred to as ________,while disorganized pathological cell death is referred to as ________.

Accepted Answer

A) apoptosis;synapsis 
B) apoptosis;necrosis 
C) necrosis;apoptosis 
D) synapsis;necrosis 
E) necrosis;synapsis

Question 19

During phagocytosis,binding of a particle to a plasma membrane receptor triggers formation of _____,which are extensions of the plasma membrane of the phagocyte that eventually surround the particle forming a phagosome.

Accepted Answer

A) podocytes 
B) exterior vesicles 
C) interior vesicles 
D) pseudopods 
E) lysosomes

Question 20

Which type of membrane protein extends across the entire lipid bilayer of the plasma membrane touching both intracellular fluid and the extracellular fluid?

Accepted Answer

A) complement protein 
B) transmembrane protein 
C) peripheral protein 
D) lipoprotein 
E) All of these choices are correct.

Exam 3: The Cellular Level of Organization