Copy and Edit

Exam 4

Description

chapters 9-11
Deana Heitkamp
Quiz by Deana Heitkamp, updated more than 1 year ago
Deana Heitkamp
Created by Deana Heitkamp over 5 years ago
3
0
0

Resource summary

Question 1

Question
Homologous pairs of chromosomes are
Answer
  • identical to each other
  • divided in anaphase 2
  • duplicated in prophase 2
  • similar to each other

Question 2

Question
The kinetochore contains
Answer
  • DNA and RNA
  • microtubule phosphatases
  • motor proteins
  • phosphatases
  • protein kinases

Question 3

Question
Apoptosis can occur when a cell
Answer
  • is damaged
  • is no longer needed
  • is too small
  • damaged and not needed
  • all three

Question 4

Question
Which of the following is not a second messenger?
Answer
  • cAMP
  • inositol triphosphate IP3
  • calcium ions
  • diacylgylcerol DAG
  • protein kinase

Question 5

Question
A nucleosome is formed by
Answer
  • the fusion of DNA and proteins
  • the winding of DNA around histone proteins
  • ribosomes and mRNA
  • the fusion of two nucleid
  • the winding of DNA around chromatin

Question 6

Question
Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of what stage of mitosis?
Answer
  • prophase
  • metaphase
  • anaphase
  • telophase
  • cytokinesis

Question 7

Question
Separation of sister chromatids is a hallmark of which phase of mitosis?
Answer
  • prophase
  • metaphase
  • anaphase
  • telophase
  • cytokinesis

Question 8

Question
Some plants exhibit alternating generations of haploid and diploid multicellular organisms. The haploid multicellular gametophyte arises from single-cell spores by the process of
Answer
  • meiosis
  • mitosis
  • spermatogenesis
  • parthenogenesis
  • oogenesis

Question 9

Question
A common feature of receptor-mediated signaling is
Answer
  • amplification
  • autophosphorylation
  • regulation
  • amplification and regulation
  • all three

Question 10

Question
A cleavage furrow forms during
Answer
  • plant cell apoptosis
  • animal cell apoptosis
  • plant cell cytokinesis
  • animal cell cytokinesis

Question 11

Question
Synaptic signaling alters membrane potential through which of the following signaling mechanisms?
Answer
  • G-protein coupled receptors
  • tyrosine kinase receptors
  • ganglioside receptors
  • ligand-gated ioin channels

Question 12

Question
Failure of chromosomes to assort independently in meiosis could lead to
Answer
  • increased crossing over
  • greater or lesser chromosome numbers in gametes
  • smaller chromosomes
  • mutations
  • larger chromosomes

Question 13

Question
The cell plate forms during
Answer
  • animal metaphase
  • plant cytokinesis
  • plant metaphase
  • plant morphogenesis

Question 14

Question
Checkpoints in the cell cycle are controlled by
Answer
  • the concentration of cyclin-dependent kinases
  • the cytoplasmic concentration of cAMP
  • the concentration of cyclins
  • mitotic spindle length

Question 15

Question
A liver cell of an organism has 8 chromosomes. How many chromosomes will be in a gamete of that organism?
Answer
  • 2
  • 4
  • 8
  • 16
  • 32

Question 16

Question
At which stage of meiosis are sister chromatids separated from each other?
Answer
  • prophase 1
  • prophase 2
  • anaphase 1
  • anaphase 2

Question 17

Question
Prokaryotes propagate by
Answer
  • karyogenesis
  • mitosis
  • cytokinesis
  • oncogenesis
  • binary fission

Question 18

Question
A grape vine stem is placed in water with rooting hormone. New growth begins to germinate. What process drives that new growth?
Answer
  • parthenogenesis
  • gametogenesis
  • meiosis
  • mitosis
  • non-disjunction

Question 19

Question
Which of the following chemical signaling systems requires transport in the circulatory system?
Answer
  • synaptic
  • paracrine
  • endocrine
  • autocrine

Question 20

Question
Mitosis results in two _____ cells, while meiosis results in _______ haploid cells.
Answer
  • diploid/two
  • haploid/four
  • haploid/two
  • diploid/four

Question 21

Question
Which of the following is a diploid cell?
Answer
  • zygote
  • skin cell
  • egg
  • zygote and skin cell
  • all three

Question 22

Question
What is a likely evolutionary advantage of sexual reproduction over asexual reproduction?
Answer
  • produces a greater number of offspring
  • lower chance of using up resources
  • requires fewer steps
  • greater variation in offspring
  • more cost effective

Question 23

Question
A drug that prevents translocation of activated receptors from the cytoplasm to the nucleus will affect which signaling system?
Answer
  • synaptic transmission
  • paracrine signaling
  • steroid hormones
  • gap junction signaling

Question 24

Question
Which of the following is common to both meiosis or mitosis?
Answer
  • parthenogenesis
  • fertilization
  • cytokinesis
  • phosphorylation
  • interphase

Question 25

Question
When phosphorylated, cyclin-dependent kinases
Answer
  • phosphorylate cyclins
  • phosphorylate target proteins
  • dephosphorylate proteins
  • dephosphorylate cyclins

Question 26

Question
Activated steroid hormone receptors are also
Answer
  • calcium channels
  • protein kinases
  • phosphodiesterases
  • protein phosphatases
  • transcription factors

Question 27

Question
Tyrosine kinase receptor enzymatic activity is enhanced by
Answer
  • tyrosine binding to the receptor
  • autophosphorylation
  • G-protein binding
  • GTP

Question 28

Question
A haploid dominant organism, such as fungi arise from spores that are
Answer
  • haploid
  • euploid
  • diploid
  • tetraploid

Question 29

Question
Fertilization results in
Answer
  • a zygote
  • a diploid cell
  • a cell with new genetic cominations
  • none
  • all

Question 30

Question
Independent assortment in meiosis occurs during
Answer
  • interphase
  • metaphase 1
  • cytokinesis
  • prophase 1

Question 31

Question
G-proteins are characterized by
Answer
  • coupling to ganglioside receptors
  • ATPase activity
  • autophosphorylation
  • localization in the cytoplasm
  • a requirement of GTP binding for activation

Question 32

Question
When during meiosis are cells haploid?
Answer
  • after meiosis 1
  • after meiosis 2
  • after interphase
  • after meiosis 1 and 2
  • all three

Question 33

Question
G-proteins are composed of
Answer
  • alpha, beta, and gamma subunits
  • a GTPase and protein kinase A
  • MAP kinases
  • GTP and protein

Question 34

Question
Steroid hormone receptors are found in the
Answer
  • cytoplasm
  • plasma membrane
  • extracellular matrix
  • circulatory system

Question 35

Question
Seedless watermelon plants have 33 chromosomes. Why don't their seeds properly develop?
Answer
  • meiosis cannot evenly reduce chromosome number
  • crossing over cannot occur
  • there is a high mutation rate in these plant cells
  • these cells cannot undergo proper mitosis

Question 36

Question
A phospholipase breaks down phospholipids into
Answer
  • calcium ions and IP3
  • IP3 and cAMP
  • DAG and cAMP
  • calcium ions and cAMP
  • IP3 and DAG

Question 37

Question
At the end of the mitotic phase of the cell cycle, each daughter cell has
Answer
  • the same amount of DNA as at the very beginning of the S phase
  • the same amount of DNA as at the very end of G2
  • half as much DNA as in G1
  • the same amount of DNA as at the very beginning of G2
  • twice as much DNA as in G1

Question 38

Question
How are DAG and IP3 formed?
Answer
  • protein kinase C enzyme activity
  • phosphorylation of cAMP
  • they are hormones that originate from signaling cells
  • phospholipase breakdown of plasma membrane
  • activation of protein kinase A

Question 39

Question
G proteins require which of the following for activation
Answer
  • GTP
  • PKA
  • adenylyl cyclase
  • PKC
  • IP3

Question 40

Question
Adenylyl cyclase uses _________ as a substrate to synthesize ________.
Answer
  • ATP; pyrophosphate
  • AMP; cAMP
  • cAMP; ATP
  • pyrophosphate; cAMP
  • ATP; cAMP

Question 41

Question
The haploid number of a human cell is
Answer
  • 12
  • 23
  • 46
  • 92

Question 42

Question
Synapses of homologous pairs of chromosomes is required for
Answer
  • crossing over
  • parthenogensis
  • non-disjunction
  • independent assortment
  • fertilization

Question 43

Question
DNA synthesis occurs during which phase of the cell cycle?
Answer
  • G1 phase
  • G0 phase
  • S phase
  • G2 phase
  • M phase

Question 44

Question
Identical copies of chromatin held together at the centromere are called
Answer
  • sister chromatids
  • histones
  • chromatin
  • nucleosomes
  • homologous chromosomes
Show full summary Hide full summary

Want to create your own Quizzes for free with GoConqr? Learn more.

Similar

Biology AQA 3.1.3 Cells
evie.daines
Biology AQA 3.2.5 Mitosis
evie.daines
Biology AQA 3.1.3 Osmosis and Diffusion
evie.daines
Biology- Genes, Chromosomes and DNA
Laura Perry
Biology- Genes and Variation
Laura Perry
Enzymes and Respiration
I Turner
GCSE AQA Biology - Unit 2
James Jolliffe
GCSE AQA Biology 1 Quiz
Lilac Potato
Using GoConqr to study science
Sarah Egan
Cells and the Immune System
Eleanor H
GCSE Biology AQA
isabellabeaumont
Browse Library