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Home Q & A Board Biology-Related Homework Help General Biology
Ask your year-one biology questions here.
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Substance P _____. (Multiple Choice)
Substance P _____. (Multiple Choice)
Substance P _____.
 
  a. increases pain-related signals
  b. is a natural painkiller
  c. is the active ingredient in aspirin

Question 2

The middle ear functions in _____.
bgarlipp   33   2 Replies
6 years ago
Color vision begins with stimulation of _____.
Color vision begins with stimulation of _____.
Color vision begins with stimulation of _____.
 
  a. hair cells c. cone cells
  b. rod cells d. neuroglia

Question 2

The organ of Corti contains receptors that signal in resp
Ebridges85   56   2 Replies
6 years ago
When you view a close object your lens gets _____.
When you view a close object your lens gets _____.
When you view a close object your lens gets _____.
 
  a. flatter c. darker
  b. rounder d. cloudier

Question 2

Visual accommodation involves adjustment to the shape of the __
anja@phs.ae   32   2 Replies
6 years ago
_____ stimulation causes the pupil to widen.
_____ stimulation causes the pupil to widen.
_____ stimulation causes the pupil to widen.
 
  a. Sympathetic b. Parasympathetic

Question 2

Defective _____ cause color blindness.
 
  a. hair cells c. cone cells
RedManchester23   36   1 Reply
6 years ago
Antidiuretic hormone is produced in the hypothalamus be distributed from the _____.
Antidiuretic hormone is produced in the hypothalamus be distributed from the _____.
Antidiuretic hormone is produced in the hypothalamus be distributed from the _____.
 
  a. anterior pituitary c. kidney
  b. posterior pituitary d. pineal gland

Question 2

___
RICHDANGER123   36   2 Replies
6 years ago
Steroid hormones are synthesized from _____.
Steroid hormones are synthesized from _____.
Steroid hormones are synthesized from _____.
 
  a. amines c. proteins
  b. peptides d. cholesterol

Question 2

Overproduction of _____ causes gigantism.
 
  a. grow
solaiman   50   1 Reply
6 years ago
The pituitary detects a rising hormone concentration in blood and inhibits the gland secreting the ...
The pituitary detects a rising hormone concentration in blood and inhibits the gland secreting the ...
The pituitary detects a rising hormone concentration in blood and inhibits the gland secreting the hormone. This is a ________ feedback loop.
 
  Fill in the blank(s) with correct word

Question 2[/co
rolab97   25   3 Replies
6 years ago
Secretion of _____ stimulates breakdown of bone.
Secretion of _____ stimulates breakdown of bone.
Secretion of _____ stimulates breakdown of bone.
 
  a. glucagon c. thyroid hormone
  b. melatonin d. parathyroid hormone

Question 2

The _____ has endocrine and exocrine functions
G.zepp   32   3 Replies
6 years ago
During stressful times, the adrenal glands increase their secretion of _____.
During stressful times, the adrenal glands increase their secretion of _____.
During stressful times, the adrenal glands increase their secretion of _____.
 
  a. iodine c. cortisol
  b. antidiuretic hormone d. secretin

Question 2

Exposure to light ____
dfysb54w   23   2 Replies
6 years ago
The _____ shrinks in size after puberty.
The _____ shrinks in size after puberty.
The _____ shrinks in size after puberty.
 
  a. pancreas c. pineal gland
  b. pituitary d. thymus

Question 2

The male sex hormone testosterone is secreted in response to a hormo
ornobtizzi   25   3 Replies
6 years ago
People who have type 1 diabetes cannot make _____ and must inject it. (Fill in the blank)
People who have type 1 diabetes cannot make _____ and must inject it. (Fill in the blank)
People who have type 1 diabetes cannot make _____ and must inject it.
 
  Fill in the blank(s) with correct word

Question 2

True or false? The steroid hormone ecdysone is made by i
reubank   25   2 Replies
6 years ago
Bones are _____. (Multiple Choice)
Bones are _____. (Multiple Choice)
Bones are _____.
 
  a. mineral reservoirs
  b. skeletal muscle's
  c. sites where blood cells form (some bones only)
  d. all of these

Question 2

A hydrostatic skel
Preet   27   3 Replies
6 years ago
A ligament connects _____. (Multiple Choice)
A ligament connects _____. (Multiple Choice)
A ligament connects _____.
 
  a. bones at a joint c. a muscle to a tendon
  b. a muscle to a bone d. a tendon to a bone

Question 2

Bones move when _____ muscles contract.
claudiawong05   52   2 Replies
6 years ago
Action of the _____ muscle is opposed by action of the triceps muscle. (Fill in the blank)
Action of the _____ muscle is opposed by action of the triceps muscle. (Fill in the blank)
Action of the _____ muscle is opposed by action of the triceps muscle.
 
  Fill in the blank(s) with correct word

Question 2

Bone breakdown is stimulated by _____.
 
  a
khalasar99   82   2 Replies
6 years ago
In sarcomers, phosphate-group transfers from ATP activate _____.
In sarcomers, phosphate-group transfers from ATP activate _____.
In sarcomers, phosphate-group transfers from ATP activate _____.
 
  a. actin c. both
  b. myosin d. neither

Question 2

Skeletal muscle can only _____ bones.
 
  a.
Alexis23   41   1 Reply
6 years ago
ATP for muscle contraction can be formed by _____.
ATP for muscle contraction can be formed by _____.
ATP for muscle contraction can be formed by _____.
 
  a. aerobic respiration c. creatine phosphate breakdown
  b. lactate fermentation d. all of these

Question 2

A sarcomere sh
nmar   50   3 Replies
6 years ago
A motor unit is _____. (Multiple Choice)
A motor unit is _____. (Multiple Choice)
A motor unit is _____.
 
  a. a muscle and the bone it moves
  b. two muscles that work in opposition
  c. the amount a muscle shortens during contraction
  d. a motor neuron and the muscle fibers it controls

[colo
sslong79   42   3 Replies
6 years ago
Muscular dystrophy _____. (Multiple Choice)
Muscular dystrophy _____. (Multiple Choice)
Muscular dystrophy _____.
 
  a. is a genetic disorder
  b. is a type of food poisoning
  c. can be prevented with a vaccine
  d. is caused by a virus
  e. both can be prevented with a vaccine and is caused by a virus[b
Princessklo82   27   3 Replies
6 years ago
In _____ blood flows through two completely separate circuits.
In _____ blood flows through two completely separate circuits.
In _____ blood flows through two completely separate circuits.
 
  a. birds c. fish
  b. mammals d. both birds and mammals

Question 2

All vertebrates have _____.
 
bector215   32   2 Replies
6 years ago
The fluid portion of blood is _____. (Fill in the blank)
The fluid portion of blood is _____. (Fill in the blank)
The fluid portion of blood is _____.
 
  Fill in the blank(s) with correct word

Question 2

The _____ circuit carries blood to and from lungs.
 
  Fill in the blank(s) with c
Darryl2057   25   3 Replies
6 years ago
Most oxygen in blood is transported _____.
Most oxygen in blood is transported _____.
Most oxygen in blood is transported _____.
 
  a. in red blood cells
  b. in white blood cells
  c. bound to hemoglobin
  d. both in red blood cells and bound to hemoglobin

Question 2[
Groanier   82   3 Replies
6 years ago
Contraction of _____ drives the flow of blood through the aorta and pulmonary arteries.
Contraction of _____ drives the flow of blood through the aorta and pulmonary arteries.
Contraction of _____ drives the flow of blood through the aorta and pulmonary arteries.
 
  a. atria b. ventricles

Question 2

Blood flows directly from the left atrium to _____.
buttssss   52   3 Replies
6 years ago
At rest, the largest volume of blood is in _____.
At rest, the largest volume of blood is in _____.
At rest, the largest volume of blood is in _____.
 
  a. arteries c. capillaries
  b. veins d. arterioles

Question 2

Blood pressure is highest in the _____ and lowest in the _
Atir   66   2 Replies
6 years ago
A pulmonary _____ carries oxygen-poor blood. (Fill in the blank)
A pulmonary _____ carries oxygen-poor blood. (Fill in the blank)
A pulmonary _____ carries oxygen-poor blood.
 
  Fill in the blank(s) with correct word

Question 2

Which human heart chamber has the thickest wall?
 
  What will be an i
vr   40   1 Reply
6 years ago
Which is more dangerous? (Multiple Choice)
Which is more dangerous? (Multiple Choice)
Which is more dangerous?
 
  a. atrial fibrillation b. ventricular fibrillation

Question 2

Lymph nodes filter _____.
 
  a. blood c. plasma
  b. lymph d. all of the
courtney4264   47   1 Reply
6 years ago
Which of the following is not considered to be part of an innate immune response?
Which of the following is not considered to be part of an innate immune response?
Which of the following is not considered to be part of an innate immune response?
 
  a. phagocytic cells e. inflammation
  b. fever f. complement activiation
  c. histamines g. antigen-presenting cells
  d. cytokines h. non
bokaro   48   2 Replies
6 years ago
Activated complement proteins _____. (Multiple Choice)
Activated complement proteins _____. (Multiple Choice)
Activated complement proteins _____.
 
  a. form pore complexes c. attract phagocytes
  b. promote inflammation d. all of these

Question 2

Which of the following is not consid
sunshine938   59   3 Replies
6 years ago
Name a defining characteristic of innate immunity. What will be an ideal ...
Name a defining characteristic of innate immunity. What will be an ideal ...
Name a defining characteristic of innate immunity.
 
  What will be an ideal response?

Question 2

_____ trigger immune responses.
 
  a. Cytokines d. Antigens
  b. Ly
D_o_m   42   2 Replies
6 years ago
Antibodies are _____. (Multiple Choice)
Antibodies are _____. (Multiple Choice)
Antibodies are _____.
 
  a. antigen receptors c. proteins
  b. made only by B cells d. all of these

Question 2

Name a defining characteristic of adaptive immunity.
 
Goose7701   37   3 Replies
6 years ago
Cell-mediated responses work against _____. (Multiple Choice)
Cell-mediated responses work against _____. (Multiple Choice)
Cell-mediated responses work against _____.
 
  a. intracellular pathogens
  b. extracellular pathogens
  c. cancerous cells
  d. both intracellular pathogens and extracellular pathogens
  e. both intracellular pathogen
madisonraynor_   32   1 Reply
6 years ago
Allergies occur when the body responds to _____.
Allergies occur when the body responds to _____.
Allergies occur when the body responds to _____.
 
  a. pathogens c. normally harmless substances
  b. toxins d. all of these

Question 2

_____ are targets of cytotoxic T cells.
qwerqwerqer   26   1 Reply
6 years ago
In _____ gas exchange occurs at the body surface and gas is distributed by diffusion alone.
In _____ gas exchange occurs at the body surface and gas is distributed by diffusion alone.
In _____ gas exchange occurs at the body surface and gas is distributed by diffusion alone.
 
  a. earthworms c. frogs
  b. flatworms d. insects

Question 2

Respiratory protein
becca29   47   3 Replies
6 years ago
In human lungs, gas exchange occurs at the _____.
In human lungs, gas exchange occurs at the _____.
In human lungs, gas exchange occurs at the _____.
 
  a. two bronchi c. alveolar sacs
  b. pleural sacs d. both pleural sacs and alveolar sacs

Question 2

Countercurrent flow o
krystian   58   1 Reply
6 years ago
During inhalation _____. (Multiple Choice)
During inhalation _____. (Multiple Choice)
During inhalation _____.
 
  a. the thoracic cavity expands
  b. the diaphragm relaxes
  c. atmosphereic pressure declines

Question 2

When you breathe quietly, inhalation
Eminoa   57   1 Reply
6 years ago
_____ binds to hemoglobin more strongly than oxygen does.
_____ binds to hemoglobin more strongly than oxygen does.
_____ binds to hemoglobin more strongly than oxygen does.
 
  a. Carbon dioxide c. Oxyhemoglobin
  b. Carbon monoxide d. Carbonic anhydrase

Question 2

What type of metal assoc
sila   75   2 Replies
6 years ago
The hormone erythropoietin causes _____. (Multiple Choice)
The hormone erythropoietin causes _____. (Multiple Choice)
The hormone erythropoietin causes _____.
 
  a. increased heart rate c. red blood cell formation
  b. deeper breathing d. all of these

Question 2

Carbonic anhydrase in red blood
EmpressDina   41   2 Replies
6 years ago
True or false? Human lungs hold some air even after forced exhalation. (True or false?)
True or false? Human lungs hold some air even after forced exhalation. (True or false?)
True or false? Human lungs hold some air even after forced exhalation.
 
  Indicate whether the statement is true or false

Question 2

_____ in arteries sense changes in the acidity
antionett15   24   3 Replies
6 years ago
What type of organism causes tuberculosis? What will be an ideal ...
What type of organism causes tuberculosis? What will be an ideal ...
What type of organism causes tuberculosis?
 
  What will be an ideal response?

Question 2

The diaphragm is a _____ muscle.
 
  a. smooth
  b. skeletal
  c. cardiac
petrajanejob   26   2 Replies
6 years ago
Protein digestion begins in the _____.
Protein digestion begins in the _____.
Protein digestion begins in the _____.
 
  a. mouth c. small intestine
  b. stomach d. large intestine

Question 2

A digestive system functions in _____.
 
  a. secr
Preet   53   2 Replies
6 years ago
Bile has a role in _____ digestion and absorption.
Bile has a role in _____ digestion and absorption.
Bile has a role in _____ digestion and absorption.
 
  a. carbohydrate c. protein
  b. fat d. amino acid

Question 2

Most nutrients are absorbed in the _____.
 
  a.
supernumerary   58   3 Replies
6 years ago
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