Macromolecules
Which macromolecule is made of only carbon and hydrogen?
Lipids
Which of the following describes a population?
A. an area with living and non living things
B. A group of the same type of organism living in the same area
C. Part of the earth that contains all ecosystems
D. Different populations of living things interacting in the same area
B. A group of the same type of organism living in the same area
A dog barks at a stranger. Which characteristic of living thing is best described?
respond to the environment (stimulus)
proteins
Which of the following is the largest level?
A. organelle
B. molecule
C. cell
D. atom
C. cell
Which macromolecule provides short term energy?
carbohydrates
Which of the following is the smallest level of organization?
A. cell
B. population
C. organelle
D. organism
C. organelle
A person breathes in oxygen - which characteristic of living thing best represents this example?
must get and use materials and energy
What is the analogy we discussed in class for activation energy?
speed bump
Ellen wants to know the effect of different colors of light on the growth of plants. She believes that plants can grow the most in white light. She places 5 ferns in white light, 5 in blue light, 5 in green light, and 5 in the closet. At the end of the experiment, Ellen observed the plants and measured their mass.
What is the independent variable?
a. Plants under white light
b. Color of light
c. Growth of plant
d. Plants not exposed to light
b. Color of light
Which macromolecule has monomers called nucleotides?
nucleic acids
Which is the correct order from smallest to largest level?
a.biosphere, ecosystem, community, species, population, organism
b. population, community, ecosystem, species, biosphere, organism
c. ecosystem, population, community, biosphere, organism, species
d. organism, population, species, community, ecosystem, biosphere
d. organism, population, species, community, ecosystem, biosphere
A moth caterpillar forms a cocoon - which characteristic of living thing best represents this example?
Grows and develops
substrate
Ellen wants to know the effect of different colors of light on the growth of plants. She believes that plants can grow the most in white light. She places 5 ferns in white light, 5 in blue light, 5 in green light, and 5 in the closet. At the end of the experiment, Ellen observed the plants and measured their mass.
What is the dependent variable?
mass of the plants
What is the monomer of proteins?
amino acids
Define ecosystem.
an area with non living and living things
Cats mate and produce kittens - which characteristic of living thing best represents this example?
Reproduction
How do enzymes speed up chemical reactions?
By lowering the activation energy
Ellen wants to know the effect of different colors of light on the growth of plants. She believes that plants can grow the most in white light. She places 5 ferns in white light, 5 in blue light, 5 in green light, and 5 in the closet. At the end of the experiment, Ellen observed the plants and measured their mass.
Which is a good constant?
a. Color of the lights
b. Type of plant
c. How much light each plant receives
d. Mass of plants
b. Type of plant
(Choice A and D cannot be the answers because they are different for each plant)
(Choice C cannot be an answer because not all plants receive light. One plant is in the closet.)
What are the elements of a carbohydrate?
Carbon, hydrogen, and oxygen
What is the order of the levels of organization from most simplest to most complex?
tissue, organ, cell, organ system, organelle
organelle, cell, tissue, organ, and organ system
The woman shivers in the cold as she is waiting for the bus - which characteristic of living thing best represents this example?
Maintain homeostasis (balance)
Set the timer to 2 minutes.
Explain how a change in pH or temperature affects an enzyme. Must use the following vocabulary terms: ENZYME, SUBSTRATE, and ACTIVE SITE
A change in pH or temperature causes the ACTIVE SITE on the ENZYME to denature (change shape). As a result, the SUBSTRATE will not be able to fit with the enzyme, making it useless.
DNA and RNA are examples of which macromolecule?
nucleic acid