Past quiz questions (all units) Flashcards
(25 cards)
T or F: All animals are eukaryotes but not all eukaryotes are animals
T
T or F: Protozoans are considered primitive animals
F
T or F:
Green photosynthetic organisms that live in the water are all algae.
T
T or F: Green alga was the likely ancestor of all plants about 470 mya, including red and brown algae.
F
T or F: Synapomorphies are traits shared by a lineage that are absent in the sister lineage. For example, hair/fur is a synapomorphy of mammals.
T
T or F: Multicellularity arose exclusively in plants, fungi and animals.
F
T or F: Fungi are more closely related to animals than to plants.
T
The most recent common ancestor of fungi and animals was what?
opisthokont
Taxonomic terms
Species Genus Family Order Class Phylum Kingdom Domain
T or F: Like all mammals, both you and mice have 2 paralogs of enzyme X (EnX), called EnXa and EnXb. True or false, your EnX paralogs are more different from each other than are EnXa orthologs of you and mouse.
T
T or F: Whole genome duplications early in the vertebrate lineage provided the raw material for the evolutionary complexity of vertebrates. True or false. If there is 1 copy of a gene in a sea urchin, you would expect 4 copies of that gene in a lizard, assuming no addition gene duplications or deletions.
T
T/F
The adaptive immune system includes both responses mediated by cytotoxic cells and responses of extracellular proteins that are present in body fluids.
T
T/F
Cells of the innate immune system are able to recognize the presence of pathogens because the pathogens bear PRR (pathogen-recognition receptors).
F
T/F
It is common for people with allergies to use histamines to block the allergic response, acting on mast cells to prevent them from from releasing their cytokines.
F
T/F
Immunization works by stimulating memory cells to produce abundant antibody.
F
T/F
In contrast to passive transport, all forms of active transport require ATP as a source of energy.
F
T/F
You are comparing 2 animals of similar shape, and both can be modelled as if they were cubes. The smaller animal measures 1 unit x 1 unit x 1 unit. The larger animal is 2 x 2 x 2. The larger animal has twice the surface area to volume of the smaller animal.
F
T/F
The following elements of a muscle are arranged in increasing order of size: thin filament, thick filament, sarcomere, myofibril, myofiber, muscle.
T
T/F
Striated muscles have thick and thin filaments whereas smooth muscle does not.
F
T/F
In many solid tissues, the basal lamina is that part of the cell membrane that is attached to connective tissue to give the organ a more defined three-dimensional structure.
F
T/F
During an action potential, the membrane potential first moves toward the equilibrium potential for Na+, then at peak depolarization, moves away from the equilibrium potential for Na+, toward the equilibrium potential for K+.
T
T/F
The hormones LH and FSH control reproduction in female mammals, but they have no role in male reproductive biology.
F
T/F
Depolarization of a neuron occurs when Na channels open and Na rushes out of the cell.
F
T/F
Cyclic AMP is a protein kinase involved in various signalling cascades. Activation of select G-protein coupled receptors stimulates the activity of adenyl cyclase, which makes cAMP, leading to changes in phosphorylation of target proteins.
F
