1.6 Lecture on Biology

A. Listen to a lecture in a biology class, and answer the questions.

genetic – relating to, caused by, created by, or affected by genes

immune – having a high level of resistance against something harmful

inherit – to obtain a trait genetically from one's parents

parasite – an organism that needs to live in, on, or with another animal or person in order to survive

trait – an inherited characteristic

1. What is this lecture about?

(A) A new theory that refutes an old theory

(B) The positive and negative effects of a trait

(C) A comparison of two deadly parasites

(D) The classification of the sickle-cell trait

2. What is the main idea of the passage?

(A) Dangerous diseases found in Africa

(B) A means of protection against malaria

(C) The harmful effects of sickle-cell disease

(D) How to inherit the sickle-cell trait

B. Listen again and fill in the diagram with the information you hear.

Sickle-Cell Trait

C. Summarize the lecture using the diagram.

D. Fill in the blanks with the key words to complete the summary below.

The biology professor is discussing sickle-cell disease. This disease is ___________, which means you __________ it from your parents. If you get it from both your parents, you will get sick and die. If you get the sickle-cell __________ from only one parent, you will live. You will also be _____________ to malaria, another dangerous disease. Malaria is a ____________ disease carried by mosquitoes.

1.7 Office hours

A. Listen to a conversation between a student and a professor, and answer the questions.

assistant – someone whose job is to help out another individual

culture – the behaviors and beliefs characteristic of a particular social, ethnic or age group

fascinate – to interest

tribal – relating to a social group of people consisting of several families or clans

warrior – someone from a group who participates in fighting against another group

1. Why does the student talk to the professor?

(A) To ask about becoming a teacher's assistant

(B) To discuss a course she needs for graduation

(C) To change the focus of her college major

(D) To ask if she can retake his class

2. What is the student's problem?

(A) She didn't receive credit for her class.

(B) The course won't count for credit.

(C) The professor already has an assistant.

(D) She's not allowed to take the class.

B. Listen again and fill in the diagram with the information you hear.

Retaking a Class

C. Summarize the lecture using the diagram.

D. Fill in the blanks with the key words to complete the summary below.

Brenda is talking to Professor Brown about his _______________ course. She is _____________ by it and wants to repeat the class. Professor Brown tells Brenda about his course for the next semester. It will focus on a tribe of African _____________ called the Masai.

He also tells her she will not get any credits for taking his class a second time. He suggests that she become his teacher's _____________. Then she will get a credit for repeating his class.