Questions and answers by

Safari

Questions (13)

Hormones are essential to maintaining homeostasis mainly becausea. they catalyze specific chemical reactions in brain cells b.
1. 2 answers
2. 566 views
To function properly, a neuron must maintain aa. membrane potential b. neurotransmitter c. negative charge on the inside d.
1. 1 answer
2. 567 views
To function properly, a neuron must maintain aa. membrane potential b. neurotransmitter c. negative charge on the inside d.
1. 1 answer
2. 595 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. 2 answers
2. 1,360 views
Which of the following is NOT a characteristic of the spinal cord?A. it runs through the VERTEBRAL column B. It extends just
1. 1 answer
2. 2,002 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. 1 answer
2. 2,810 views
After an action potential, the voltage-gated sodium channels close thena. sodium ions diffuse into the axons b. potassium ions
1. 1 answer
2. 605 views
The discovery of _____ helped scientists determine the phylogeny of amniotes?A) external fertilization B) temporal skull holes
1. 0 answers
2. 347 views
Which of the following is NOT a characteristic of reptiles?A) internal temperature regulation B) Internal fertilization C)
1. 1 answer
2. 719 views
The xylem and phloem in the leaf are found in the _______ layera. lower epidermis b. spongy messophyll c. upper epidermis d.
1. 1 answer
2. 611 views
The downward growth of a root is an example ofa. phototropism b. photoperodism c. negative gravitropism d. positive gravitropism
1. 1 answer
2. 446 views
Medicinal uses of plants include all of the following excepta. cancer treatment b. treatment for cardiac disorder c.
1. 1 answer
2. 641 views
The typical flowering vascular plant sporophyte...a. includes the developing embryo b. has roots, shoots, and meristems. c.
1. 1 answer
2. 476 views