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BIOL 150 Exam a questions and answers already passed 2024
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BIOL 150 Exam a questions and answers already passed 2024
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BIOL 150 Exam #3 Question andanswers 100% correct (27 pgs)
What is in the primary cell wall structure? - correct answer ✔Cellulose &
Pectin
What is in the secondary cell wall structure? - correct answer ✔Waxes,
Cellulose & Lignin
What is the structure of the Extracellular Matrix (ECM)? - correct answer
✔Collagen, Integrins & Fibronectins
What is multicellularity? - correct answer ✔Physical connections between
cells
A group of cells with similar morphology and function is called? - correct
answer ✔A tissue
What are the layers of the extracellular space in between plant cells? - correct
answer ✔Primary cell wall 1, middle lamella, primary cell wall 2
What type of cell-cell attachment seals cells together? - correct answer
✔Tight junction
What type of cell-cell attachment connects the cytoskeletons of cells? - correct
answer ✔Desmosomes
,What type of cell-cell attachment acts as channels between cells and can
allow small molecules, sugars and nucleotides to pass through? - correct
answer ✔Gap junctions
What type of cell-cell attachment is a direct connection between cells where
the plasma membrane and cytoplasm are continuous and organelles can
move through? - correct answer ✔Plasmodesmata
What is the continuous network of cytoplasm connected by plasmodesmata
called? - correct answer ✔Symplast
What is the region outside the plasma membrane called? - correct answer
✔Apoplast
What molecule in the body acts as a cell signal? - correct answer ✔Hormone
What is signal reception? - correct answer ✔The binding of the signal to the
receptor at the cytoplasm of the target cell or at the plasma membrane of the
receptor
Somatic cells go through - correct answer ✔Mitosis
Gametes go through - correct answer ✔Meiosis
Asexual reproduction, daughter cells are identical to parent cell "clones" -
correct answer ✔Mitosis
Sexual reproduction, daughter cells are unique - correct answer ✔Meiosis
, Compacted DNA - correct answer ✔Chromatin
Compacted chromatin - correct answer ✔Chromosome
Single, long DNA double helix wrapped around proteins in a highly organized
manner - correct answer ✔Chromosome
Region of DNA that codes for a particular RNA or protein in the cell - correct
answer ✔Gene
Consists of G1 phase, S phase & G2 phase - correct answer ✔Interphase
1st gap phase - correct answer ✔G1
DNA replication takes place & each chromosome is replicated to form sister
chromatids - correct answer ✔S phase
2nd gap phase - correct answer ✔G2
4 unreplicated chromosomes are present - correct answer ✔G1 phase
4 replicated chromosomes, each consisting of 2 sister chromatids are present
- correct answer ✔G2 phase
Chromosomes condense and spindle apparatuses begin to form - correct
answer ✔Prophase
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