|
Prof.Ann SchlosserProfessor
Moberly Area Community College
USA
|
1.1 The study of life Read Online
Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.
| Start Quiz | Download PDF | |
| Start Quiz | Download PDF | |
| Start Quiz | Download PDF | |
| Start Quiz | Download PDF | |
| Start Quiz | Download PDF | |
| Start Quiz | Download PDF | |
| Start Quiz | Download PDF | |
| Start Quiz | Download PDF |
This introductory course in biology starts at the microscopic level, with molecules and cells. Before we get into the specifics of cell structure and behavior, however, lets take a cursory glance at the field of biology more generally. Though biology as we know it today is a relatively new field, we have been studying living things since the beginning of recorded history. The invention of the microscope was the turning point in the history of biology; it paved the way for scientists to discover bacteria and other tiny organisms and ultimately led to the modern cell theory of biology. You will notice that, unlike the core program courses you took in chemistry and physics, introductory biology does not have many mathematical laws and rules and does not require much math. Instead, you will learn a great number of new terms and concepts that will help you describe life at the smallest level. Over the course of this semester, you will recognize the ways in which the tiniest of molecules are involved in the way we go about our everyday lives. Note that this course is an alternative to BIO101B, and that you may choose to take either BIO101A or BIO101B in order to learn about molecular and cellular biology. These courses cover the same material but in a slightly different way.
Download MCQ Quiz PDF eBook
|
|
Prof.Ann SchlosserProfessor
Moberly Area Community College
USA
|
Question: Which statement about the role of these RNA polymerases is inaccurate?
Choices:
mRNA is a RNA copy of a segment of DNA.
tRNA transfers information from the DNA to the RNA.
rRNA serves as a decoder during translation.
tRNA and rRNA interact closely during translation.
Question: Where is ATP produced in the chloroplast?
Choices:
Calvin Cycle
ATP synthase on the thylakoid membrane
Electron transport chain of the light reactions in the thylakoid membrane
All of the above
Question: If the general formula for monosaccharide is (CH2O)n, then the value of n for galactose is _____________ and fructose is _______________.
Choices:
4, 6
6, 4
6, 6
5, 6
Question: Which of the following is CORRECTLY matched?
Choices:
Exon and mRNA
tRNA and nucleus
Okazaki fragments and nucleus
Assembly into multimeric protein and Golgi
Question: A protein binds a DNA sequence several hundred base pairs upstream of a promoter and increases the rate of transcription of the gene, which the promoter controls. This protein is called which of the following?
Choices:
Repressor
Lactose
Polymerase
Enhancer
Question: Which of the following is NOT an organ involved in homeostasis?
Choices:
Liver
Kidney
Endocrine system
Cerebellum
Question: Which of the following statement about evolution and adaptation is false?
Choices:
The most superior individual in the species will pass the most genes to the next generation.
The most superior finch in a habitat is the most efficient at finding sexual mates.
The ability to survive various environments confers an adaptive advantage.
Evolution is all natural, meaning that it has no rules.
Question: How is energy transferred in metabolism?
Choices:
By the process where a phosphate group is added to ADP
By the process where a phosphate group is added to ATP
By phosphate groups that are moved around
By enzymes that are moved around
Question: Which of the following scientist(s) discovered the structure of the DNA molecule?
Choices:
Gregor Mendel
Francis Crick and James Watson
Louis Pasteur
Antonie van Leeuwenhoek
Question: Which of the following are produced during the light reactions of photosynthesis?
Choices:
ATP, NADPH, and O2
Glucose, ATP, and NADPH
ATP, NADPH, and CO2
ADP, NADP+, and O2
Question: Which of the following are the fundamental chronological steps of the Central Dogma of Molecular Biology?
Choices:
DNA is translated to mRNA, which is transcribed to protein.
DNA is transcribed to mRNA, which is translated to protein.
DNA is polymerized to protein, which is translated to mRNA.
DNA is transcribed to mRNA, which is functionalized to protein.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
