Which of the following is not a characteristic found among animal species?
A. All of the answer choices are correct.
B. They have a developmental stage called a blastula.
C. They are heterotrophs.
D. They secrete and bind to a substance called the extracellular matrix.
E. They are multicellular eukaryotes.
A. All of the answer choices are correct.
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Which of the following is the proper order of cells for water and minerals to travel from the soil into the xylem?
A. root hair, cortex, epidermis, endodermis B. endodermis, cortex, epidermis, endodermis C. root hair, endodermis, cortex, xylem D. root hair, cortex, endodermis, xylem E. root hair, cortex, endodermis, phloem, xylem
A friend tells you that her husband has been feeling anxious and stressed for the past month. During this same time interval, he has had several infections, bouts of forgetfulness, and erectile dysfunction. Doctors have already checked for ulcers, cancer, blood pressure changes, and other blood irregularities, but these apparently are normal. You are an endocrinologist, so you suggest that he be
tested for the most likely endocrine malfunction, which would be altered ____ levels in the blood. a. estrogen b. cortisol c. calcitonin d. melatonin e. testosterone
Four of the five items listed below are related
to genetic information. Select the EXCEPTION.
a. chromatids b. centromere c. chromosome d. phosphorylation e. polymerase
Science can best be described as
A) a search for the ultimate truth. B) a search for evidence that proves our concepts wrong. C) proving facts. D) a complete lack of dissent amongst ideas to obtain the truth.