General Biology

In an ELISA test (enzyme-linked immunosorbent assay) what is the reason alkaline phosphatase is ...

In an ELISA test (enzyme-linked immunosorbent assay) what is the reason alkaline phosphatase is ...

In an ELISA test (enzyme-linked immunosorbent assay) what is the reason alkaline phosphatase is linked to the secondary antibody?
A) It ensures that contaminates from the medium are removed.
B) It can cause a color change to occur, indicati

dracko   56   1 Reply

Shadias

In an equilibrium population (Multiple Choice Question)

In an equilibrium population (Multiple Choice Question)

In an equilibrium population
A) mutation rates do not change.
B) natural selection occurs.
C) allele frequencies do not change.
D) population size cannot change.
E) rates of gene flow are constant.

tyressjones   70   2 Replies

tyressjones

In an essay for her sociology class, Ashley argues that the difficulties some As

In an essay for her sociology class, Ashley argues that the difficulties some As

In an essay for her sociology class, Ashley argues that the difficulties some Asian immigrants have had are partially due to the wide social distance between them and mainstream society, which resulted in increased opportunities for negative stereoty

victoria1   471   1 Reply

bio_man

In an evolutionary context, ________ structures do not currently have a function in present-day organisms.

In an evolutionary context, ________ structures do not currently have a function in present-day organisms.

In an evolutionary context, ________ structures do not currently have a function in present-day organisms.

OkeyDokey   51   3 Replies

love-civic

In an evolutionary sense, ________ is the transfer of alleles from one population to another.

In an evolutionary sense, ________ is the transfer of alleles from one population to another.

In an evolutionary sense, ________ is the transfer of alleles from one population to another.

c-man   142   3 Replies

gkop98

In an example of embryonic induction, signals from cells in the ________ cause gastrulation.

In an example of embryonic induction, signals from cells in the ________ cause gastrulation.

In an example of embryonic induction, signals from cells in the ________ cause gastrulation.
 
  a. dorsal lip
 b. ectoderm
 c. gray crescent
 d. endoderm

Question 2
[br

becca29   50   2 Replies

becca29

In an experiment on wayfinding, indigo buntings were housed in outdoor cages with blotting paper ...

In an experiment on wayfinding, indigo buntings were housed in outdoor cages with blotting paper ...

In an experiment on wayfinding, indigo buntings were housed in outdoor cages with blotting paper
  walls and inkpads on the floors. Which of the following facts demonstrated to researchers that the
  indigo bunting uses the positions of sta

ladyapj   55   3 Replies

ddd856

In an experiment testing the prediction that a certain drug prevents cataracts in females over the ...

In an experiment testing the prediction that a certain drug prevents cataracts in females over the ...

In an experiment testing the prediction that a certain drug prevents cataracts in females over the age of 65, which control should be used?
A) male subjects
B) female subjects younger than 65
C) alternative drugs that are suspected to

purpleberry   72   2 Replies

purpleberry

In an experiment the subjects or items being investigated are divided into the experimental group ...

In an experiment the subjects or items being investigated are divided into the experimental group ...

In an experiment the subjects or items being investigated are divided into the experimental group and
 
 a. the nonexperimental group.
  b. the control group.
  c. the statistics group.
  d. none of these choices.

[b

cb2015   35   1 Reply

krystalle11

In an experiment, control groups are used to identify 1.side effects compared to an experimental ...

In an experiment, control groups are used to identify 1.side effects compared to an experimental ...

In an experiment, control groups are used to identify
  1.side effects compared to an experimental group.
  2.group experiences of the same conditions.
  3.group experiences of different conditions.
  4.side effects of a hypothesi

BurningAshe   30   1 Reply

noox

In an experiment, it was determined that the effector neuron for muscle fibre 1 had a threshold ...

In an experiment, it was determined that the effector neuron for muscle fibre 1 had a threshold ...

In an experiment, it was determined that the effector neuron for muscle fibre 1 had a threshold level of –5 mV. The effector neuron for muscle fibre 2 had a threshold level of –16 mV.

An electrical probe was used to stimulate these two ef

llaalllaallaaaa   224   3 Replies

bio_man

In an experiment, Jokela et al. reared 14 replicate populations of a snail that is poly-morphic for ...

In an experiment, Jokela et al. reared 14 replicate populations of a snail that is poly-morphic for ...

In an experiment, Jokela et al. reared 14 replicate populations of a snail that is poly-morphic for sexual/asexual reproduction under controlled identical conditions in the lab.
 
  Each population started with 35 asexual and 65 sexual exp

tyler0468   15   2 Replies

tyler0468

In an experiment, strength of a neural stimulus and resulting muscle contraction are compared.

In an experiment, strength of a neural stimulus and resulting muscle contraction are compared.

In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fiber is observed in this experiment. One end of the muscle fiber is attached to a mass. The foll

sealamanato   800   4 Replies

sealamanato

In an experiment, the control group is

In an experiment, the control group is

In an experiment, the control group is
  a. not subjected to experimental error.
  b. exposed to experimental treatments.
  c. maintained under strict laboratory conditions.
  d. treated exactly the same as the experimental
 

kmtz77   42   1 Reply

mlevans624

In an experiment, the control group is:

In an experiment, the control group is:

In an experiment, the control group is:
 
  a. not subjected to experimental error.
  b. exposed to experimental treatments.
  c. maintained under strict laboratory conditions.
  d. treated exactly the same as the experiment

memoloka   72   1 Reply

EEEEErica

In an experiment, the strength of a neural stimulus and the resulting muscle contraction are ...

In an experiment, the strength of a neural stimulus and the resulting muscle contraction are ...

o contract a single muscle fibre, the same all-or-none response occurs. Then, how is it possible to lift a heavier object? When lifting a heavier weight, more muscle fibres are stimulated. To lift a smaller weight, fewer muscles fibres are stimulated

rachelle17   907   5 Replies

habiba

In an hydrostatic skeleton, the force of muscle contraction is applied against a rigid, external ...

In an hydrostatic skeleton, the force of muscle contraction is applied against a rigid, external ...

In an hydrostatic skeleton, the force of muscle contraction is applied against a rigid, external body
  covering.
 
  Indicate whether the statement is true or false.

Question 2
[

anja@phs.ae   30   3 Replies

Lauraem32

In an ideal, unlimited environment, a population's growth follows a(n) ________ model.

In an ideal, unlimited environment, a population's growth follows a(n) ________ model.

In an ideal, unlimited environment, a population's growth follows a(n) ________ model.
A) exponential
B) density-dependent
C) logistic
D) boom-and-bust

jj88888nb   22   3 Replies

thoratticus

In an ideal, unlimited environment, what shape does a population's growth curve most closely resemble?

In an ideal, unlimited environment, what shape does a population's growth curve most closely resemble?

In an ideal, unlimited environment, what shape does a population's growth curve most closely resemble?
A) S
B) J
C)
D)

Nakeiat   32   3 Replies

jenngeraghty

In an isolated system, all of the following are true of the second law of thermodynamics EXCEPT:

In an isolated system, all of the following are true of the second law of thermodynamics EXCEPT:

In an isolated system, all of the following are true of the second law of thermodynamics EXCEPT:
A) the amount of useful energy decreases.
B) reactions cause energy to be converted from more useful to less useful forms.
C) all chemical

tyressjones   83   2 Replies

tyressjones

In an isotonic contraction of a skeletal muscle,

In an isotonic contraction of a skeletal muscle,

In an isotonic contraction of a skeletal muscle,
 
 a. the tension in the muscle increases.
  b. movement occurs.
  c. no movement occurs.
  d. both a and c occur.

Question 2[

buttssss   93   1 Reply

vivian970811

In an open circulatory system, the circulatory fluid is called:

In an open circulatory system, the circulatory fluid is called:

In an open circulatory system, the circulatory fluid is called:
 
  a. blood
  b. plasma
  c. interstitial fluid
  d. lymph
  e. hemolymph

Question 2

The first ha

emmybay02   70   2 Replies

emmybay02

In an operon, the switch that controls mRNA synthesis is the promotor, which is a sequence of bases ...

In an operon, the switch that controls mRNA synthesis is the promotor, which is a sequence of bases ...

In an operon, the switch that controls mRNA synthesis is the promotor, which is a sequence of bases upstream from
  the first structural gene.
  __________________ Indicate whether the statement is true or false.

[fa]

loryatchy   42   2 Replies

loryatchy

In an operon, the ______ acts as an on/off switch.

In an operon, the ______ acts as an on/off switch.

In an operon, the ______ acts as an on/off switch.
A) operator
B) promoter
C) activator
D) repressor

mikael   2262   3 Replies

nite_n_day

In an Rh incompatibility during pregnancy, the mother

In an Rh incompatibility during pregnancy, the mother

In an Rh incompatibility during pregnancy, the
  mother
  a. must be positive and her first and second
  fetuses positive.
  b. must be negative and her first and second
  fetuses positive.
  c. must be negative and her

endraxz   40   3 Replies

AllisonHope3

In androgen insensitivity syndrome, (Multiple Choice)

In androgen insensitivity syndrome, (Multiple Choice)

In androgen insensitivity syndrome,
  a. no testosterone is produced.
  b. chemicals circulating in the blood deactivate the
  male hormone.
  c. the cellular receptor for testosterone in the target
  cells is defective.

Hank   26   3 Replies

transfer

In angiosperms, pollen grains develop in the ________ and land on the ________.

In angiosperms, pollen grains develop in the ________ and land on the ________.

In angiosperms, pollen grains develop in the ________ and land on the ________.
A) anther; stigma
B) stigma; anther
C) anther; ovary
D) carpel; stamen

Fattbatts   35   1 Reply

bob smith

In angiosperms, the gametophyte generation:a. results from the fertilization of two gametes. b. ...

In angiosperms, the gametophyte generation:a. results from the fertilization of two gametes. b. ...

In angiosperms, the gametophyte generation:a.
   results from the fertilization of two gametes.
  b. is dominant.
  c. is nutritionally dependent on the sporophyte.
  d. produces gametes via meiosis.
  e. produces spores by m

Tatu   44   3 Replies

shelberszinsker

In angiosperms, the gametophyte generation:a. results from the fertilization of two gametes. b. ...

In angiosperms, the gametophyte generation:a. results from the fertilization of two gametes. b. ...

In angiosperms, the gametophyte generation:a.
   results from the fertilization of two gametes.
  b. is dominant.
  c. is nutritionally dependent on the sporophyte.
  d. produces gametes via meiosis.
  e. produces spores by m

G.zepp   32   2 Replies

G.zepp

In angiosperms, the male gametophyte is

In angiosperms, the male gametophyte is

In angiosperms, the male gametophyte is
A) pollen.
B) the anther.
C) a flower.
D) sperm.
E) a seed.

tyressjones   108   2 Replies

tyressjones

In angiosperms, the process of ________ ensures that the endosperm will develop only in ovules ...

In angiosperms, the process of ________ ensures that the endosperm will develop only in ovules ...

In angiosperms, the process of ________ ensures that the endosperm will develop only in ovules containing a fertilized egg.
A) cytogenesis
B) meiosis
C) double fertilization
D) cytokinesis

Gunveen   34   1 Reply

brady_ferguson6

In angiosperms, the ________ is a nutrient-storing tissue that nourishes a developing embryo.

In angiosperms, the ________ is a nutrient-storing tissue that nourishes a developing embryo.

In angiosperms, the ________ is a nutrient-storing tissue that nourishes a developing embryo.
A) fruit
B) seed
C) carpels
D) endosperm

AbdoSamir   76   3 Replies

atree1157

In animal bodies, __________ detect stimuli and send signals to an __________ such as a brain. Fill ...

In animal bodies, __________ detect stimuli and send signals to an __________ such as a brain. Fill ...

In animal bodies, __________ detect stimuli and
  send signals to an __________ such as a brain. Fill in the blank(s) with the appropriate word(s).
 
 

Question 2

__________ and

Darryl2057   46   2 Replies

Darryl2057

In animal cells the main microtubule organizing center (or centrosome) is important in cell ...

In animal cells the main microtubule organizing center (or centrosome) is important in cell ...

In animal cells the main microtubule organizing center (or centrosome) is important in cell division.
  __________________ Indicate whether the statement is true or false.

Question 2

Golgi

emmybay02   30   2 Replies

emmybay02

In animal cells the main microtubule organizing center (or centrosome) is important in cell ...

In animal cells the main microtubule organizing center (or centrosome) is important in cell ...

In animal cells the main microtubule organizing center (or centrosome) is important in cell division.
  __________________Indicate whether the statement is true or false.

Question 2

The

jai   38   2 Replies

jai

In animal cells, cytokinesis occurs via the formation of a(n) cell plate. __________________ ...

In animal cells, cytokinesis occurs via the formation of a(n) cell plate. __________________ ...

In animal cells, cytokinesis occurs via the formation of a(n) cell plate.
  __________________ Indicate whether the statement is true or false.

Question 2

The nuclear envelope fragments

Eric8925   80   2 Replies

Eric8925

In animal cells, spindle microtubules originate from structures called

In animal cells, spindle microtubules originate from structures called

In animal cells, spindle microtubules originate from structures called
A) cyclins.
B) centrioles.
C) chromatids.
D) histones.

tyressjones   99   2 Replies

tyressjones

In animal cells, ____ is (are) usually a one-way path.

In animal cells, ____ is (are) usually a one-way path.

In animal cells, ____ is (are) usually a one-way
  path.
 
  a. replication
  b. translation
  c. transcription
  d. differentiation
  e. replication and translation

Question

sunshine938   20   2 Replies

sunshine938

In animal metabolism , most of the monomers released by digestion of food...

In animal metabolism , most of the monomers released by digestion of food...

in animal metabolism , most of the monomers released by digestion of food macromolecules are metabolized to provide energy. only a small portion of these monomers are used for synthesis of ew macromolecules. the net result is that...?

eslam1696   1039   2 Replies

bio_man

In animal skeletal muscles, white muscle fibers

In animal skeletal muscles, white muscle fibers

In animal skeletal muscles, white muscle fibers
 
  a. have an abundance of myoglobin.
  b. make ATP by lactate fermentation.
  c. produce ethanol.
  d. are good for sustained activities.
  e. are not found in chickens[

lorenlauu   27   3 Replies

mas0375