water soluble hormones

attach to protein receptors on membranes of target cells.

The role of insulin is to

allow cells to take in glucose.

Apoptosis begins when

a “death receptor” on the cell membrane receives a signal

Several hours after a meal,

glucose levels low: pancreas secretes glucagon

are an example of a stimulus-response model

form a hormone-receptor complex inside the cytoplasm.

In which of the following situations would cells die by necrosis, not apoptosis?

Removal of heart muscle cells damaged by oxygen depletion

The correct order of events is

stimulus-affector-effector-response

lipid soluble hormones

are hydrophobic and therefore pass through the cell membrane

May act on nearby cells or on distant cells

Pheromones are best described as which one of the following?

excreted into the environment by animals

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Duplicate of Unit 3 Biology Chapter 4: Cellular Signals and Apoptosis

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Questions 27

Answers

1
The nerve impulse is an electrical current that travels along dendrites or axons.
True
False
2
water soluble hormones
bind to proteins in the nuclear membrane.
attach to protein receptors on membranes of target cells.
form a hormone-receptor complex inside the cytoplasm.
directly inhibit enzymes in the cytoplasm.
3
The role of insulin is to
prevent cells from taking in glucose.
bind directly to glucose
monitor the levels of glucose to regulate glucose use.
allow cells to take in glucose.
4
Apoptosis begins when
the cell is injured
caspases become activated
killer enzymes tear up the cytoskeleton
a “death receptor” on the cell membrane receives a signal
5
water soluble hormones
are hydrophobic
are hydrophilic
6
Several hours after a meal,
glucose levels will be high: pancreas secretes glucagon.
glucose levels low: pancreas secretes glucagon
glucose levels low: liver stops secreting insulin.
glucose levels will be high: pancreas secretes insulin.
7
Special enzymes are released during necrosis from
vacuoles
lysosomes
golgi bodies
cytoplasm
8
What type of chemicals are released into the environment by individuals of the same species?
pheromones
neurohormones
neurotransmitters
enzymes
9
The control of blood glucose is best described as
positive feedback
negative feedback
10
Reflexes
involve the CNS only
are an example of a stimulus-response model
involve the PNS only
are voluntary reactions
11
The master control center of the endocrine system is the
pituitary gland.
thyroid gland.
cerebral cortex.
hypothalamus.
12
Lipid-based hormones
directly inhibit enzymes in the cytoplasm.
are hydrophilic.
form a hormone-receptor complex inside the cytoplasm.
attach to protein receptors on membranes of target cells.
13
In cell transduction, lipid soluble hormones
activate second messenger
bind to receptor on cell membrane
diffuse through cell membrane
14
The type of programmed cell death that is a part is normal development is called
apoptosis
cytokinesis
meiosis
mitosis
15
What type of cell is shown below?
somatic cell
efferent neurone
sensory neurone
afferent neurone
16
In which of the following situations would cells die by necrosis, not apoptosis?
Removal of virus infected cells
Removal of neurones that don't make proper connections
Removal of heart muscle cells damaged by oxygen depletion
Removal of cells with damaged DNA that cannot be repaired
17
The neurotransmitters travel from:
dendrite to axon
axon to soma
axon to dendrite
soma to dendrite
18
Cholesterol is a
amino acid based hormone
lipid based hormone
peptide hormone
19
The correct order of events is
stimulus-affector-receptor-response
stimulus-affector-effector-response
stimulus-effector-affector-response
stimulus-effector-receptor-response
20
lipid soluble hormones
are hydrophobic and therefore bind to receptors on membranes
are hydrophobic and therefore pass through the cell membrane
are hydrophilic and therefore pass through the cell membrane
are hydrophilic and therefore bind to receptors on membranes
21
Which cellular organelles are involved in the initiation of the intrinsic pathway of apoptosis?
endoplasmic reticulum
mitochondria
golgi apparatus
lysosomes
22
What is the function of apoptosis?
to shape organs during development
to weed out cells that grow uncontrollably
to allow the immune system to distinguish self from non-self
All of these are correct
23
If glucose is low
insulin is released
ADH is released
glycogen is released
glucagon is released
24
Protein based hormones are
able to diffuse across a cell membrane
hydrophilic
lipid soluble
hydrophobic
25
If glucose is high
ADH is released
insulin is released
glycogen is released
glucagon is released
26
Hormones
May act on nearby cells or on distant cells
Are present only in plants
Cannot act on the cell that creates them
Are present only in animals
27
Pheromones are best described as which one of the following?
affect members of other species
excreted into the environment by animals
released within the bloodstream
produced in both plants and animals

Duplicate of Unit 3 Biology Chapter 4: Cellular Signals and Apoptosis Flashcards | StudBud