Safari

Questions and answers by visitors named Safari

Questions (13)

Which of the following is NOT a characteristic of the spinal cord?A. it runs through the VERTEBRAL column B. It extends just
1. 4 answers
2. 1,890 views
The typical flowering vascular plant sporophyte...a. includes the developing embryo b. has roots, shoots, and meristems. c.
1. 1 answer
2. 434 views
Medicinal uses of plants include all of the following excepta. cancer treatment b. treatment for cardiac disorder c.
1. 2 answers
2. 593 views
The downward growth of a root is an example ofa. phototropism b. photoperodism c. negative gravitropism d. positive gravitropism
1. 1 answer
2. 402 views
The xylem and phloem in the leaf are found in the _______ layera. lower epidermis b. spongy messophyll c. upper epidermis d.
1. 2 answers
2. 556 views
Which of the following is NOT a characteristic of reptiles?A) internal temperature regulation B) Internal fertilization C)
1. 2 answers
2. 663 views
The discovery of _____ helped scientists determine the phylogeny of amniotes?A) external fertilization B) temporal skull holes
1. 1 answer
2. 304 views
After an action potential, the voltage-gated sodium channels close thena. sodium ions diffuse into the axons b. potassium ions
1. 2 answers
2. 564 views
WHEN A NEURON IS AT REST,a. sodium ions are most concentrated inside the cell b. potassium ions are most concentrated inside the
1. 3 answers
2. 2,753 views
Which of the following is TRUE of an open circulatory system, but NOT TRUE of a closed circulatory system?a. water is drawn into
1. 4 answers
2. 1,300 views
To function properly, a neuron must maintain aa. membrane potential b. neurotransmitter c. negative charge on the inside d.
1. 3 answers
2. 550 views
To function properly, a neuron must maintain aa. membrane potential b. neurotransmitter c. negative charge on the inside d.
1. 2 answers
2. 527 views
Hormones are essential to maintaining homeostasis mainly becausea. they catalyze specific chemical reactions in brain cells b.
1. 3 answers
2. 517 views