Biology, 04.11.2020 18:20 saraagracee
Which best describes fetal development?
The heart beats and is heard during the first trimester.
The heart beats and is heard during the second trimester.
The heart beats during the first trimester, but is heard in the second trimester.
The heart beats during the second trimester, and is heard in the third trimester.
Answers: 3
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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
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Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.
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This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic.
Answers: 1
Which best describes fetal development?
The heart beats and is heard during the first trimester.
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