Cell theory/Organelles
What is one characteristic that all living things share?
a. Their cells have DNA
b. They can smell and taste
c. They can move.
d. They have two or more cells.
a. Their cells have DNA
The invention of which of the following enabled scientists to discover cells?
A. A telescope
B. A microscope
C. A scanning electron microscope
D. an X-ray machine
A microscope
Evidence for evolution can be found in:
a. comparative anatomy.
b. the fossil record.
c. DNA analysis.
d. All of the above
d. All of the above
What is a solute give an example?
The dissolved substance.
There are ___________ levels in the classification system for organisms.
a. ten
b. four
c. three
d. eight
d. eight
Which of the following is NOT part of the Cell Theory?
a. Animals and plants share the same kinds of cells
b. All organisms are made up of one or more kinds of cells
c. The cell is the most basic unit of all living things
d. All cells come from existing cells
a. Animals and plants share the same kinds of cells
You are looking through a microscope at a substance that appears to be having a membrane, DNA, ribosomes, and a nucleus. According to the cell theory, this must be?
A. an Animal cell
B. a bacteria cell.
C. a Virus
D. a Protein
An animal cell
What are fossils?
Remains or evidence of an organism that lived in the past.
The heads in the phospholipid bi layer is
A. Hydrophilic
C. Hydrophobic
A. Hydrophilic
________________ is the science of identifying, classifying, and naming all living things.
a. Linnaeus c. Mitosis
b. Taxonomy d. Biology
b. Taxonomy
Why did it take scientists until 1665 to discover that cells existed?
a. Scientists before that time were not very intelligent.
b. Scientists did not have methods to collect cells in order to study them.
c. Cells were too small to be seen with the naked eye, and the microscope had to be invented and improved.
d. There really were not any reasons why it took so long for cells to be discovered
c. Cells were too small to be seen with the naked eye, and the microscope had to be invented and improved.
Which of the scientists did NOT contribute to modern cell theory?
A. Rudolf Virchow
B. Robert Hooke
C. Matthias Schleiden
D. Theodore Schwann
B. Robert Hooke
Which type of structure indicates evidence of a common ancestor?
a. homologous structures
b. analagous structures
c. both a & b
d. none of the above
a. homologous structures
Homeostasis
Homeostasis is the ability for a cell to keep stable conditions inside as the external conditions change.
The scientific process of arranging organisms into groups based on similar characteristics is
a. observation. c. binomial nomenclature.
b. classification. d. dichotomy
c. binomial nomenclature.
What is the function of Lysosomes?
They break down excess or worn-out cell parts.
Garbage Collector.
What are small hair like projection called?
A. Cilia
B. Flagella
C. Ribosomes
D. E.R
A. Cilia
Many whales have tiny, unused hip and pelvis bones on their torsos. How does this evidence support theories about animal evolution?
A. It shows that many animals, including whales, evolved to have unused body parts.
B. It shows that whales may have evolved from land-dwelling animals.
C. It shows that whales evolved at the same time as other non-marine animals.
D. It shows that marine animals, like whales, evolved much more slowly than land- dwelling animals.
B. It shows that whales may have evolved from land-dwelling animals.
What happens to a cell that is put in a Hypertonic solution?
Shrinks
Which of the following is correct about the classification system?
a. A class contains more organisms than a family.
b. Scientific names are written in either German or Latin.
c. Species contains the greatest number of organisms.
d. A scientific name consists of three words
a. A class contains more organisms than a family.
One difference between a prokaryotic and eukaryotic cell is that a prokaryotic cell does not have
a. A cell wall
b. DNA Molecule
c. A nucleus
d. Ribosomes
c. A nucleus
Which one of the following produces spindle fibers?/
A. Centrioles
B. Chromosomes
C. Ribosomes
D. Nucleus
A. Centrioles
Punctuated equilibrium.
?
Mutation in which protein of the RBC'S causes Sickle-cell anemia?
Hemoglobin.
An organism’s scientific name consists of ______________.
a. its class name and its family name.
b. its kingdom name and its phylum name.
c. its genus name and its species name.
d. its phylum name and its species name.
c. its genus name and its species name.