WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 24, Problem 2MC
Summary Introduction
Introduction:
Nervous systems are found in multicellular animals.
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Rafflesia plants do not provide food for insects that are attracted to their flowers. Why do the insects most likely visit rafflesia flowers?
A
The insects are looking for a place to live on the flowers.
B
The insects are attracted to the movement of the flowers.
C
The insects are following other insects that eat the flowers.
D
The insects are attracted to the rotting meat smell from the flowers.
Using scientific concepts and terms describe how the Bucket Orchid can temporarily “hold” onto the bee’s body while it glues the pollen sacs to the bees back. In other words, what type of plant “movement” (aka. response) would this most likely be described as? Please watch the YouTube link to answer the question.
An Orchid’s Trap
https://youtu.be/_uHJGdTgtXE
We say that movement is a characteristic of living organisms but we always don’t see visible movements in plants. Comment.
Chapter 24 Solutions
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Explain the effects plant chemicals have on people (not just how it changes the way the neurotransmitter works, what does that change do to the person) if they affect PNS neurotransmitters in the following ways: Norepinepherine agonist Norepinepherine antagonist Acetylcholine agonist Acetylcholine antagonist Pick TWO of these, write down the neurotransmitter, then the effect a drug would have on people when doing what is listed in the bullet list.arrow_forwardOur nerve impulse travels from one neuron to the next in the form of. a. chemical signal b. electrical signal c. electromagnetic signal d. pressure signalarrow_forwardThe release of a neurotransmitter from a terminal button produces an inhibitory postsynaptic potential (IPSP) in the postsynaptic neuron. What is the most likely mechanism by which this occurs? A. the neurotransmitter opens chemically activated chloride channels B. the neurotransmitter activates a second messenger which then opens calcium channels C. the neurotransmitter is glutamate D. the neurotransmitter acts on a G-protein linked receptor which opens sodium channelsarrow_forward
- What happens when light strikes rhodopsin? (Include a description of the signal transduction pathway in your answer.)arrow_forwardWhich of the following evolutionary adaptations would result in an increase in the speed of conduction of action potentials by increasing the membrane resistance of the axon? a. increasing the number of channels in the plasma membrane b. placing all voltage-gated ion channels at distant intervals |c. myelinating the axon d. increasing the diameter of the axon e. decreasing the number of channels in the membrane.arrow_forwardTida made a sketch of a plant in her bedroom, similar to the one shown below. She keeps the plant near a sunnywindowsill. Tida wants to investigate how the plant will respond if she turns it 180 degrees, or one half circle. She turnsthe plant and observes it two days later. a Most of the plant's leaves will be facing side B. b The plant's top leaves will droop downward. c The plant will lose more leaves on side A. d The plant's leaves will be evenly distributed between sides A and B.arrow_forward
- Which of the following statements about the intensity of a nerve response is true? Select one: a. A stimulus reaching the threshold level may or may not propagate a nerve impulse. b. A small voltage shift and a large voltage shift will yield the same nerve impulse as long as the stimulus reaches the threshold level. c. All stimuli, regardless of the strength, will always generate a nerve impulse. d. A stimulus resulting in a greater voltage shift will result in a stronger nerve impulse and increased sense of perception in the brain.arrow_forwardIf you were a plant, what stimuli would you be most and least sensitive about? Why?arrow_forwardThis diagrams show the transmission of a signal through a network of neurons. How is a signal transmitted through one neuron to another?arrow_forward
- Which of the following statements about the intensity of a nerve response is true? a. A stimulus reaching the threshold level may or may not propagate a nerve impulse. b. A stimulus resulting in a greater voltage shift will result in a stronger nerve impulse and increased sense of perception in the brain. c. All stimuli, regardless of the strength, will always generate a nerve impulse. d. A small voltage shift and a large voltage shift will yield the same nerve impulse as long as the stimulus reaches the threshold level.arrow_forwardA plant biologist observed a peculiar pattern when a tropical shrub was attacked by caterpillars. After a caterpillar ate a leaf, it would skip over nearby leaves and attack a leaf some distance away. Simply removing a leaf did not deter caterpillars from eating nearby leaves. The biologist suspected that an insect-damaged leaf sent out a chemical that signaled nearby leaves. How could the researcher test this hypothesis?arrow_forwardWhat do multiple sclerosis and ALS (amyotropic lateral sclerosis) have in common?a. They both are more common in young men than in young women.b. They both impair the initiation of action potentials.c. They both damage the myelin sheath, disrupting action potential transmission.d. They both impair nerve function in the peripheral nervous systemarrow_forward
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