The term used for organisms that can synthesize their own food from inorganic substances is:
A. Heterotrophs
B. Autotrophs
C. Saprotrophs
D. Parasites
Answer: Option B
Solution (By JKExamLibrary)
Autotrophs (self-feeders) include photoautotrophs (plants, algae, cyanobacteria) and chemoautotrophs (some bacteria). They produce organic matter from CO₂. Heterotrophs depend on others, saprotrophs decompose dead matter, parasites live on hosts.
Explanation:
The bicuspid (mitral) valve has two cusps and closes during ventricular systole to prevent regurgitation into the left atrium. The tricuspid valve is on the right.
Explanation:
Myoglobin is an oxygen-binding protein in muscle. Hemoglobin contains iron and is red; hemocyanin contains copper and is blue. Hemoglobin is in RBCs.
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