What is the probable biological and evolutionary function for a species of desert lizards to to utilize female-only reproduction?
A. Parthenogenesis allows lizards to save energy by limiting diversity.
B. Parthenogenesis attracts males to the all female population.
C. Parthenogenesis results in the crossing-over of chromosomes and does not exhibit any evolutionary benefit.
D. This species is probably going extinct and parthenogenesis is a last ditch effort at reproduction.
Answer: A
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In a single sodium-potassium pump cycle, ATP is used with the result that
A. 3 sodium ions leave and 2 potassium ions enter. B. 2 sodium ion enters and 1 potassium ion leaves. C. 2 sodium ion leaves and 1 potassium ion enters. D. 3 sodium ions enter and 2 potassium ions leave. E. sodium and potassium ions enter and water leaves.
Coenzyme Q (also known as ubiquinone or CoQ) is often found in lotions and moisturizers. Given
what you know about its role in cellular respiration, infer what it might be doing in these products.
a. It helps glycolysis proceed faster in the cytosol of skin cells. b. It absorbs dangerous free radicals (loose electrons) that can cause aging. c. It decreases the rate of metabolism and slows cellular growth. d. It is absorbed and used by cells with a high metabolism. e. It causes older cells to spontaneously die and regenerates new cells.
Konrad Lorenz demonstrated that newly hatched birds would direct their social behavior toward him if they saw him first after they hatched from their eggs. What is this called?
A. cross-fostering behavior B. operant conditioning C. fixed action patterning D. habituation behavior E. imprinting behavior
How are mitosis and cytokinesis alike?
A. Both involve DNA synthesis. B. Both involve division. C. Both involve the nucleus. D. Both involve mitochondria. E. Both involve apoptosis.