Cells inside the seminiferous tubules that support sperm during development are the ____ cells

a. follicle
b. endometrium
c. Leydig
d. prostatic
e. nurse


e

Biology & Microbiology

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In a normal cellular protein, where would you expect to find a hydrophobic amino acid like valine?

A) in the interior of the folded protein, away from water B) on the exterior surface of the protein, interacting with water C) in the transmembrane portion interacting with lipid fatty acid chains D) in the interior of the folded protein, away from water, or in a transmembrane portion interacting with lipid fatty acid chains E) anywhere in the protein, with equal probability

Biology & Microbiology

Scientists can gain information about ancient atmospheric CO2 levels through ice core data. This is primarily the result of sediments being trapped in glaciers, which scientists can subsequently assess for different carbon isotopes (13C, 12C, 14C)

A. true B. false

Biology & Microbiology

A(n) ____ is the transition zone where two ecosystems meet and intergrade

a. intertidal zone b. ecotone c. range d. biome e. thermocline

Biology & Microbiology

The ability to maintain a relatively constant internal environment

A) Ecosystem 

B) Informed consent agreement 

C) Epidemiologic studies 

D) Critical thinking 

E) Homeostasis

F) Metabolism

G) Placebo 

H) Theory 

I) Hypothesis 

J) Adaptive trait

Biology & Microbiology