Unit 4

Place the five steps of mitosis in order: Anaphase Interphase Metaphase Prophase Telophase

When _______ are first formed, they have a nucleus, but it is absorbed before they begin their function in circulation. red blood cells white blood cells platelets

________ attack foreign cells directly or secrete an enzyme that immobilizes foreign substances. Enzymes Thrombocytes Nerves Lymphocytes

__________ provides a transport system between cell parts and a surface on which reactions may take place. Centrosome Mitochondria Endoplasmic reticulum Organelles

_________ is the part between the outer cell membrane and the nuclear membrane. Vacuole Cytoplasm Nucleus

These cells occur as continuous sheets on surfaces where material is transported to the cells. Sensory cells Absorptive cells Nerve cells Muscle cells

During mitosis, step three is referred to as _____________ . metaphase telophase prophase interphase

_______ is the division of cells in which the genetic material of the cell is duplicated exactly. Meiosis Mitosis

During mitosis or meiosis, thin fibers called ___________ are attached to the chromosomes. centromere gametes spindle fibers tetrad

The ________ is found in nearly all cells; it contains the hereditary information and is the control center for the cell. cytoplasm nucleus axion DNA

________ are the cells that form layers of bone in the early stages of ossification (bone formation). Dendrites Osteoblasts Basophils Collagen

__________ are like a digestive organ and can be used to digest molecular matter or even the cell itself if it is dead or dying. Golgi bodies Chloroplasts Lysosomes Centrosomes

Sex cells always have half the number of chromosomes that are present in ___________ body cells. parent cells somatic daughter cells ova

A group of four chromosomes is called (a) _________________. gametes parent cells somatic tetrad

____________ are small bodies found on the surface of the endoplasmic reticulum or suspended free of other organelles in the cytoplasm. Mitochondria Lysosomes Centrioles Ribosomes

What best descibes a cell membrane? Rigid and pointless Squishy and open Rigid and open Squishy and encloses cell contents

The golgi apparatus processes ____________. ribosomes proteins fats vacuoles

What makes it impossible for a plant cell/plant to move? Chloroplasts Nucelus Chloroplasm Cell Wall

The main job of the nucleolus is to make _____. rRNA RNA genes DNA

What process takes place in the mitochondria? Digestion Oxygenation Respiration Photosynthesis

Which organelle is most associated with a “factory-warehouse?” Nucleus Smooth ER Rough ER Cell Membrane