Answers: 1
Biology, 21.06.2019 13:30
Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.
Answers: 1
Biology, 21.06.2019 16:30
Ascientist is studying muscle twitches in chicken quadriceps. to activate the muscle, he needs to provide stimulus to the
Answers: 1
Biology, 22.06.2019 02:00
The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important
Answers: 3
Biology, 22.06.2019 13:20
Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).
Answers: 2
What does varying globally mean?...
Mathematics, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40
Geography, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40
English, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40
Biology, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40
Chemistry, 27.05.2021 17:40
Biology, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40
Mathematics, 27.05.2021 17:40