Biology, 28.01.2021 18:10, willveloz4
Sarah says that galaxies are larger than solar systems. What evidence supports this claim?
Group of answer choices
Solar systems and galaxies are about the same size.
Our solar system is at the heart of the Milky Way Galaxy.
Galaxies are made of stars.
Solar systems are older than galaxies.
Answers: 2
Biology, 22.06.2019 01:30, ayoismeisalex
Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.
Answers: 1
Biology, 22.06.2019 10:20, saucyyyyniahhhhh
Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f
Answers: 1
Biology, 22.06.2019 10:50, prxncekevin
What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b. diffusion c. endocytosis d. exocytosisc. endocytosis
Answers: 2
Sarah says that galaxies are larger than solar systems. What evidence supports this claim?
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