Which statement describes starches, fats, proteins, and DNA?
(1) They are used to store genetic information.
(2) They are complex molecules made from
smaller molecules.
(3) They are used to assemble larger inorganic
materials.
(4) They are simple molecules used as energy
sources.
What is (2) They are complex molecules made from
smaller molecules.
100
18 In lakes in New York State that are exposed
to acid rain, fish populations are declining. This
is primarily due to changes in which lake
condition?
(1) size (3) pH
(2) temperature (4) location
What is (3) pH
100
Which cell structure is mainly responsible for
releasing energy from food molecules in some
single-celled organisms?
(1) ribosome (3) cell membrane
(2) chloroplast (4) mitochondrion
What is (4) mitochondrion
100
Human reproduction usually involves
(1) internal fertilization and internal development
(2) external fertilization and external development
(3) internal fertilization and external development
(4) external fertilization and internal development
What is (1) internal fertilization and internal development
100
A scientist plans to cut a segment of DNA so that
it can be inserted into the DNA of a bacterium,
a single-celled organism. The scientist needs to
use a special type of organic molecule to perform
this cutting process. This molecule is
(1) a lipid (3) an enzyme
(2) a carbohydrate (4) a hormone
What is (3) an enzyme
200
Enzymes, antibodies and hormones are all examples of which organic macromolecule?
What is PROTEIN
200
A finite resource in the environment that keeps
a population from steadily increasing is known as
(1) dynamic equilibrium
(2) a limiting factor
(3) a reproductive enzyme
(4) ecological succession
What is (2) a limiting factor
200
In which organelle does protein synthesis occur in the cell ?
What is ribosomes
200
When an organism reproduces asexually, it usually
has
(1) only one parent, and half as much DNA as
the parent
(2) only one parent, and the same chromosome
number as the parent
(3) two parents, and twice as much DNA as
either parent
(4) two parents, and the same chromosome
number as each parent
What is (2) only one parent, and the same chromosome
number as the parent
200
The hormone adrenaline can affect only cells with
(1) appropriately shaped receptors
(2) the appropriate antibodies
(3) ribosomes that produce adrenaline
(4) genes that break down adrenaline
What is (1) appropriately shaped receptors
300
Which group consists entirely of organic molecules?
(1) protein, oxygen, fat
(2) protein, starch, fat
(3) water, carbon dioxide, oxygen
(4) water, starch, protein
What is (2) protein, starch, fat
300
Which statement best describes how a major
change in the size of one population affects an
ecosystem?
(1) It will immediately affect every population
and the physical conditions.
(2) It will affect the physical conditions, but not
the other populations.
(3) It could directly or indirectly affect the
physical conditions and any population.
(4) It affects every population, not the physical
conditions.
What is (3) It could directly or indirectly affect the
physical conditions and any population.
300
During gas exchange, the cell membrane of a
single-celled organism has the same function as
which organ system in humans?
(1) nervous (3) digestive
(2) reproductive (4) respiratory
What is (4) respiratory
300
German measles is a disease that can harm an
embryo if the mother is infected in the early
stages of pregnancy because the virus that causes
German measles is able to
(1) be absorbed by the embryo from the mother’s
milk
(2) be transported to the embryo in red blood
cells
(3) pass across the placenta
(4) infect the eggs
What is (3) pass across the placenta
300
In living cells, chemical processes, such as synthesis,
all require the action of
(1) specialized antibiotics
(2) hormones
(3) salts
(4) biological catalysts
What is (4) biological catalysts
ENZYMES!
400
ANSWER 2 of the 3 questions
1. Proteins break down into?
2. Carbohydrates and Starch break down into?
3. Lipids and Fats break down into?
Which factor would be least likely to contribute
to the development of a new species?
(1) plentiful resources within the environment
occupied by the species
(2) increased genetic variation within the
species
(3) changes in the environment of the species
(4) the ability of the species to increase its
numbers by sexual reproduction
What is (1) plentiful resources within the environment occupied by the species
400
A mutation occurring in a human can be passed
from parent to offspring when it occurs in a
(1) lung cell, due to exposure to a toxic gas
(2) gamete formed in the ovary
(3) body cell undergoing mitosis
(4) heart cell with chromosome damage
What is (2) gamete formed in the ovary
400
Potato farmers in Ireland during the mid 1800s
all grew the same type of potato. The potato
plants were all produced as clones of one another.
When a fungus infected the crop, all of the
potatoes were destroyed. This occurred because
these potato plants
(1) had little genetic variability
(2) had increased biodiversity
(3) were the product of fertilization
(4) were the result of biotechnology
What is (1) had little genetic variability
400
Plants that live in hot, dry climates have evolved
mechanisms to help conserve limited water sup-
plies. One example is the closing of leaf openings
by guard cells during the day to decrease water
loss from their leaves. This detection of and
response to an environmental stimulus is an
example of
(1) a feedback mechanism
(2) a genetic mutation
(3) an organ malfunction
(4) an allergic reaction
What is (1) a feedback mechanism
500
Which statement describes a function of the
hormone estrogen?
(1) It regulates the secretion of digestive
enzymes.
(2) It promotes sperm production in males.
(3) It influences the development of adult sex
characteristics.
(4) It maintains blood sugar levels.
What is (3) It influences the development of adult sex
characteristics.
500
Identify one ecological issue and what we can do to fix it?
Multiple responses.
500
Which organelle is considered the gate keeper of the cell and is selectively permeable?
What is the cell membrane.
500
Gametes for male and female are produced in which organs?
What is ovary for women and testes for men.
500
The corn we eat today is larger and has more
kernels than the corn people first grew thousands
of years ago. Which process is most likely
responsible for the changes that have occurred?
(1) mitosis (3) direct harvesting
(2) succession (4) selective breeding