stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Unit 3 Biology Chapter 4: Cellular Signals and Apoptosis Flashcards | StudBud
Explore
/
Unit 3 Biology Chapter 4: Cellular Signals and Apoptosis
Unit 3 Biology Chapter 4: Cellular Signals and Apoptosis
35 terms
·
StudBud Administration
·
740 plays
#Biology #Unit 3 #AOS 2 #VCE #BiologySvS
Flashcards
35 cards
F
Practice quiz
P
Host live
L
Questions
35
Answers
1
The neurotransmitters travel from:
dendrite to axon
soma to dendrite
axon to dendrite
axon to soma
2
Cholesterol is a
lipid based hormone
amino acid based hormone
peptide hormone
3
The diagram shows the location of cancer cells in a tissue. Cells increase because there is
decreased rate of apoptosis in the surrounding normal cells
reduction in size of the nuclei of cancer cells
increased caspase function within each of the cancer cells
impaired signalling from death receptors on cancer cells
4
Several hours after a meal,
glucose levels low: liver stops secreting insulin.
glucose levels will be high: pancreas secretes insulin.
glucose levels will be high: pancreas secretes glucagon.
glucose levels low: pancreas secretes glucagon
5
What is one function of apoptosis?
to remove cells that have accumulated toxins
to control cell death
to shape organs during development
to cause cells to shrink and take up less space
6
If glucose is low
ADH is released
insulin is released
glycogen is released
glucagon is released
7
Which cellular organelles are involved in the initiation of the intrinsic pathway of apoptosis?
mitochondria
golgi apparatus
lysosomes
endoplasmic reticulum
8
lipid soluble hormones
are hydrophilic and therefore pass through the cell membrane
are hydrophobic and therefore bind to receptors on membranes
are hydrophilic and therefore bind to receptors on membranes
are hydrophobic and therefore pass through the cell membrane
9
Hormones
Are present only in plants
May act on nearby cells or on distant cells
Are present only in animals
Cannot act on the cell that creates them
10
Pheromones are best described as which one of the following?
affect members of other species
excreted into the environment by animals
produced in both plants and animals
released within the bloodstream
11
Special enzymes are released during necrosis from
lysosomes
golgi bodies
cytoplasm
vacuoles
12
Lipid-based hormones
directly inhibit enzymes in the cytoplasm.
form a hormone-receptor complex inside the cytoplasm.
are hydrophilic.
attach to protein receptors on membranes of target cells.
13
If glucose is high
glucagon is released
insulin is released
ADH is released
glycogen is released
14
water soluble hormones
bind to proteins in the nuclear membrane.
form a hormone-receptor complex inside the cytoplasm.
attach to protein receptors on membranes of target cells.
directly inhibit enzymes in the cytoplasm.
15
During depolarization, which of the following statements about ion channels is TRUE?
Na+ gates open and K+ gates remain closed
K+ gates open before Na+ gates
K+ gates open and Na+ gates remain closed
Na+ gates open before K+ gates
16
The REAL master control center of the endocrine system is the
pituitary gland.
hypothalamus.
thyroid gland.
cerebral cortex.
17
What type of cell is shown below?
afferent neurone
sensory neurone
efferent neurone
somatic cell
18
In which of the following situations would cells die by necrosis, not apoptosis?
Removal of heart muscle cells damaged by oxygen depletion
Removal of cells with damaged DNA that cannot be repaired
Removal of virus infected cells
Removal of neurones that don't make proper connections
19
Apoptosis begins when
killer enzymes tear up the cytoskeleton
the cell is injured
caspases become activated
a “death receptor” on the cell membrane receives a signal
20
water soluble hormones
are hydrophobic
are hydrophilic
21
The nerve impulse is an electrical current that travels along dendrites or axons.
False
True
22
Auxins are distributed
evenly in C
on the left of C
on the right of C
23
In cell transduction, lipid soluble hormones
diffuse through cell membrane
activate second messenger
bind to receptor on cell membrane
24
What type of chemicals are released into the environment by individuals of the same species?
pheromones
neurotransmitters
neurohormones
enzymes
25
The role of insulin is to
prevent cells from taking in glucose.
bind directly to glucose
allow cells to take in glucose.
monitor the levels of glucose to regulate glucose use.
26
The sodium-potassium pump is involved in establishing the resting membrane potential.
False
True
27
Reflexes
involve the PNS only
involve the CNS only
are an example of a stimulus-response model
are voluntary reactions
28
Which of the following statements about the resting membrane potential is TRUE?
the exterior is positive and the interior is negative
the exterior is positive and the interior is neutral
the exterior is negative and the interior is positive
the exterior is negative and the interior is neutral
29
The plant shown is demonstrating
positive gravitropism
negative geotropism
positive thigmotropism
negative hydrotropism
30
Protein based hormones are
lipid soluble
hydrophobic
able to diffuse across a cell membrane
hydrophilic
31
The type of programmed cell death that is a part is normal development is called
mitosis
cytokinesis
apoptosis
meiosis
32
Gibberellins in eucalyptus trees
Make leaves hang vertically
Promote adult leaves
Make the plant flower
Promote juvenile leaves
33
The correct order of events is
stimulus-effector-affector-response
stimulus-effector-receptor-response
stimulus-affector-effector-response
stimulus-affector-receptor-response
34
The control of blood glucose is best described as
negative feedback
positive feedback
35
Depolarization in an nerve cell occurs because:
more Na+ diffuse out of the cell than K+ diffuse into it
more K+ diffuse out of the cell than Na+ diffuse into it
more K+ diffuse into the cell than Na+ diffuse out of
more Na+ diffuse into the cell than K+ diffuse out of it
