Practice part 2
Correct Question: The enzyme that creates ATP during electron transport is called: Your Answer: ATP
Correct Question: How many turns of the Krebs cycle are needed to completely break down one
molecule of glucose? Your Answer: two
1. Which of the following will occur with a problem with the
sympathetic nervous system?
Stage II Hypertension
2. Which is true in regards to personality with normal aging?
1. Which statement regarding malnutrition is true?
1. Which is the smallest unit of life that can survive and reproduce on its own?
2. The instructions in DNA are used to make
3. The chemical processes in th
71. Which organ that is a target of insulin plays the most significant role in
regulating sugar levels in circulation?
72. In order to maintain homeostasis, parathyroid hormone would stimulate
what response t
9. The main decomposers on Earth are the:
plants and animals.
bacteria and fungi.
viruses and protists.
plants and fungi.
10. Lichens are:
fungi that grow on the roots of plants.
fungi adapted for life in rocky soil.
a mutualistic associ
1. In humans, freckles are dominant to no freckles, and
unattached earlobes are dominant to attached earlobes.
Two individuals who both have freckles and unattached
earlobes have a child with no freckles and attached
earlobes. What are the genotypes of th
60. About how much of the atmosphere is composed of nitrogen?
61. The two main processes that return water to the atmosphere are evaporation
24. Which segment of an mRNA transcript is removed before it is translated?
25. The full complement of DNA found in a cell of your body constitutes your:
30. As part of your independent study in field biology, you are sent to a small,
inland sea. In one of your samples, you discover a small eel-like creature. It has a
stiff, rod-shaped structure running the length of its dorsal side, with a line of
Amoeba and phytoplankton differ in that phytoplankton can:
live on land.
move with pseudopodia.
2. Which organisms form the basic foundation of the food chain in the ocean?
53. You discover a single-celled organism that does not have a nucleus, and you
also notice that the culture is producing methane. In which group would you
place this organism?
54. A eukaryoti
46. Which of these becomes the baby?
inner cell mass
outer cell mass
PAG E 3
47. Studying the changes in densities of pocket gophers when large herbivores
such as elk are excluded from mountain forests would be an example of studyin
16. All fungi are:
17. Where are the food materials digested by fungi located?
within their cells
within their mitochondria
within food vacuoles
18. For fungi that produce mushrooms, the m
The Structure of the Cell
Pictured is a breast cancer cell, photographed by a
scanning electron microscope. This picture shows the
overall shape of the cell's surface at a very high
magnifcaton. (Natonal Cancer Insttute)
Scanning electron microscope image
Observing Patterns in
Occurs in 1 out of 3,300 births
More than 10 million people are carriers of the
Only occurs when inherit mutated alleles from
Most common mutation is a 3 base pair
deletion (1 c
First cells on Earth did not use sunlight for food
-extracted C and H from simple molecules
3.2 BYA photoautotrophs evolved in shallow ocean waters
Introduction to Biology
Dr. Lisa Demchik
Vocabulary of Biology
Not knowing the vocabulary makes the questions seem difficult.
-Read the text and do exercises at end
New cells need to be created to
1. Replace old / dead cells
2. Repair damaged tissues
3. Allow organisms to grow
Why Do Cells Divide?
The larger a
cell places on
the cell gets
From DNA to Protein
Gene = genetic
occurs in sets on a
Encodes a RNA or
Made up of the four
(A, T, C, G) arranged
in specific order
The multistep process by which a gene's
Meiosis and Sexual Reproduction
Cell theory states:
All cells arise from preexisting cells.
cell division that produces somatic cells
one cell divides into two identical cells
Cell division that produces gametes
Can You Make Your Own Food?
Plants can make their own food (glucose) with
only three ingredients!
1. Light Energy from the Sun.
2. Carbon Dioxide from the air.
3. Water from the soil.
This is called
Short Review of Photosynthesis and
The Photosynthesis Equation
6CO2 + 6H2O
C6H12O6 + 6O2
Scientists describe the
reactions of Photosynthesis
in two parts
Genetic basis of Skin color
>100 gene products contribute to the formation of
melanosomes which synthesize melanin
-two pigments: reddish, brownish/black
Mutations lead to regional varieties (evolution?)
Sunscreen/UV radiation/Vitamin D
Molecules of Life
-Human body requires about 1 tablespoon of fat each day
In 1900s, Procter and Gamble developed partially hydrogenated
soybean oil.Candles to food
-long shelf life, mild flavor, lower cost than lard or butter
Major part of American dietFi
Control of Gene Expression
15 -20 % of the deaths in developed
countries are due to cancer.
-Cells are abnormally growing and/or dividing
-Can disrupt bodys tissues
-Mechanism to control cell number is disrupted
Beginnings of ca
Biotechnology is the use of living systems
and organisms to develop or make useful
products, or "any technological application
that uses biological systems, living
organisms or derivatives thereof, to make or
modify products or p
Chemical Basis of Life
Everything is made of matter.
Matter is made of atoms.
Atoms are made of:
+ mass of 1
neutrons 0 mass of 1
electrons - mass <1
Different kinds of atoms = elements
Interaction between atoms make t
Ground Rules of Metabolism
Defined as the set oflife sustaining
chemical transformations that take
place within the cells of living
-Defined as capacity to do work
-Can be transferred between systems or
converted from one form