More Biology Midterm Questions Flashcards
Which organisms have a single circular chromosone?
A. Eukaryotes
B. Prokaryotes
B prokaryotes
True or false? Mitosis occurs in eukaryotic cells but not in prokaryotic cells?
TRUE
Fill in the blank:
During cell division in a eukaryotic cell, mitosis is followed by ——,
The division of cytoplasm
Cytokinesis
Name a type of cell division that occurs in prokaryotic cells, in which a parent cell divides into two identical daughter cells .
A. Multiple fission
B. Binary fission
B. Binary fission
True or false?
Mitosis is the division of the nucleus into 2 genetically identical nuclei?
True
Cell division in prokaryotes is called binary fission?
True
In binary fission four daughter calls are produced? Tue or false?
False
In the process of cell division the parent cell divides to form?
A. Twin cells
B . Daughter cells?
Daughter cells
What are the levels of biological organization?
Organelles>cell>tissue>organ>organ system>organism
Which activity can occur without the use of energy?
A. Contraction of muscle tissue
B movement of water across a membrane
B. Movement of water across a membrane
Which substance can enter a cell by diffusion without having to be digested?
Water
What controls the cell at key checkpoints?
A. Regulatory lipids
b. Regulatory proteins
B. Regulatory proteins
In the cell cycle ____________, includes G1, S, and G2 phases
Interphase
True or false : the cell cycle is more complicated in prokaryotic cells than in eukaryotic cells ?
False
True or false? Cancer is a disease that occurs when the cell cycle is no longer regulated and cell division goes out of control
True
True or false : the S phase in the cell cycle is short for synthesis phase the phase in which the DNA replicates ?
TRUE
Which stage of the cell cycle involves the division of the nucleus?
Mitosis
Name some phases of the cell cycle.
Synthesis phase, mitotic phase, growth phase
What is an abnormal mass of cells that may be cancerous?
Tumor
True or false?
DNA replication can only occur in eukaryotic cells?
False
True or false? Prophase is the last stage of mitosis during which chromosomes uncoil to form chromatin , the spindle breaks down and new nuclear membranes form
False
The spindle fibers ensure that sister chromatids will separate and go to different daughter cells when the cell divides? True or false?
TRUE
True or false? The process of cell division includes both mitosis and cytokinesis?
TRUE
The phase of the cell cycle when the cytoplasm splits apart and the cell separates into two identical daughter cells is?
Cytokinesis
What is the opposite of prophase and pro metaphase?
Telophase
The division of a nucleus occurs in a process called?
Mitosis
True or false ? The first phase of mitosis is anaphase?
False
True or false? Metaphase is the second phase of mitosis where chromosomes line up at the cells equator?
True
What is the difference between a cell and tissue?
A cell is the basic building block of life
Tissues are groups of similar cells that work together to perform a specific function
What are genotypes made of the same alleles?
Homozygous
What are different forms of genes for a single trait!?
Alleles
What is a gene that is always expressed?
Dominant
What is a gene that is expressed only in the homozygous state?
Recessive
What are genotypes made of two different alleles?
Heterozygous
