In human cells, most of the DNA is found in the _____.
nucleus
The organelles within the cell whose main functions are digestion and hydrolysis are the _____
Lysosomes
Large molecules are transported into or out of the nucleus through _____.
nuclear pores
Mitosis consists of four phases. In order, they are _____, _____, _____, and _____.
P-MAT
Prophase, Metaphase, anaphase, telophase
apoptosis?
programmed cell death
can be activated during G1 checkpoint
Most of the cellular machinery in human cells is in the _____.
cytoplasm
_____ are huge macromolecules composed of RNA and protein, whose function is to synthesize protein
Ribosomes
The structures that organize and generate the microtubules for the mitotic spindle during mitosis and for cilia and flagella are called _____.
centioles
Interphase can be divided into three groups of events, _____, _____, and _____.
G1 (Gap 1)
S (Synthesis)
G2 (Gap 2)
Benign vs Malignant Caners?
Contained vs circulating
The outer membrane of the nuclear envelope is continuous with ribosome studded organelle the _____
Rough ER
The function of the _____ ER varies greatly from cell type to cell type, and can include lipid metabolism, steroid synthesis, calcium storage and release, and others
smooth
The outer membrane of the nuclear envelope is continuous with the _____
vvv
Cells that have permanently stopped dividing enter a phase of the cell cycle known as _____
G0
define what is: MITOSIS
somatic call division.
a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
The basic structure of a cell's membrane is a(n) _____ bilayer with associated proteins that can be either integral or peripheral.
phospholipid
Proteins leaving the rough ER are transported to the _____ for modification, packaging, and transport to the appropriate location
Golgi Apparatus
Short, cellular projections that allow the cell to move through their environment, or for human cells, to move fluid across their surface, are called _____
cilia
Cell growth and preparation for cell division occur during the _____ and _____ phases, respectively.
G1
G2
What are histone proteins?
strand of DNA coiled around a group of histoneproteins; appears like beads on a string
Cytosolic proteins are made by _____ ribosomes, while proteins destined for export, or use in membrane, are made by _____ ribosomes
Free
Membrane bound (Rough ER)
The outer membrane of the nuclear envelope is continuous with the _____
mirofilaments, intermediate filaments, and microtubules
Chromatin vs Chromatids
Chromatin – consists of one extremely long DNA molecule and its associated proteins; organize and fold molecule to conserve space
Sister chromatids – identical copies of each chromosome; made in preparation for cell division; connected to one another at region called centromere
The cell cycle can be divided into two major phases, _____ and _____.
interphase; mitotic or mitosis
cilia vs flagella?
