High School Level Science

Rolling the tongue (R) is dominant over inability to roll the tongue as it remains flat (r).

Rolling the tongue (R) is dominant over inability to roll the tongue as it remains flat (r).

complete problem 20 on page 615 in the textbook. identify the phenotypes and genotypes of all the people shown in this pedigree. Rolling the tongue (R) is dominant over inability to roll the tongue as it remains flat (r).

Question and char

lin-lin17   2323   1 Reply

bio_man

Identify the phenotypes and genotypes of all the people shown in this pedigree.

Identify the phenotypes and genotypes of all the people shown in this pedigree.

Complete practice problem 21 on page 615 of the textbook. Identify the phenotypes and genotypes of all the people shown in this pedigree. Remember to change symbols!

Chart and question attached.

lin-lin17   2287   1 Reply

cloveb

What needs to stay constant when measuring enthalpy change?

What needs to stay constant when measuring enthalpy change?

When measuring the change of enthalpy of a chemical system, which 2 variables must be help constant?

aliduck   163   1 Reply

wonderfull

What factors increase the speed of nerve impulses in the nervous system?

What factors increase the speed of nerve impulses in the nervous system?

What factors increase the speed of nerve impulses in the nervous system? 
Select one:
a. presence of white and grey matters
b. presence of myelin sheaths and thickness of axons
c. length of axons and thickness of axons

chelology   213   1 Reply

bio_man

The diagram illustrates best the( pls see the diagram below) A. negative feedback control of the amo

The diagram illustrates best the( pls see the diagram below) A. negative feedback control of the amo

The diagram illustrates best the( pls see the diagram below)
A. negative feedback control of the amount of insulin released from
the pancreas
B. positive feedback control of the amount of insulin released from
the pancreas
C.

niku80   271   5 Replies

bio_man

The sperm chromosome maps are more likely to be DeP than DEP. Explain.

The sperm chromosome maps are more likely to be DeP than DEP. Explain.

11) The sperm chromosome maps are more likely to be DeP than DEP. Explain. (Thumbnail #1)

Hint - Again the location of the alleles on the chromosome is important. The farther apart, and the greater the distance from the centromere, then th

ZOË95   7796   12 Replies

bio_man

In response to low blood pressure, the kidney produces Substance M, which in turn causes the adrenal ...

In response to low blood pressure, the kidney produces Substance M, which in turn causes the adrenal ...

In response to low blood pressure, the kidney produces Substance M, which in turn causes the adrenal cortex to produce Substance N. The presence of Substance N results in the reabsorption of Substance Q and water into the blood. The reabsorption of w

Gops   493   2 Replies

habiba

The individual kernels of corn are a stage in the life cycle of a corn plant. Each kernel develops f

The individual kernels of corn are a stage in the life cycle of a corn plant. Each kernel develops f

1.)
Dihybrid Corn Lab: (1 of 9)
The individual kernels of corn are a stage in the life cycle of a corn plant. Each kernel develops from a separate fertilization of an egg to form a zygote, a seed. The kernels in the above diagram represent

bobdfhskafhs   2036   4 Replies

bio_man

An athlete running a marathon can lose a large quantity of water as a result of sweating.

An athlete running a marathon can lose a large quantity of water as a result of sweating.

An athlete running a marathon can lose a large quantity of water as a result of sweating.

The hormone that is secreted in greater-than-normal amounts in order to conserve water in an athlete running a marathon is
Select one:
a.

Gops   747   2 Replies

bio_man

Integration and control of the human body is by

Integration and control of the human body is by

Integration and control of the human body is by
Select one:
a. the nervous system but not the endocrine system
b. the endocrine system but not the nervous system
c. neither the endocrine nor nervous system
d. the endocrine sy

Gops   422   2 Replies

bio_man

Choose the correct number from this chart

Choose the correct number from this chart

In a circuit consisting of a light bulb connected to a batter, the battery supplies_____ to the electrons. This produces____ across the battery which causes a _____. The amount of current flowing is controlled by ______ of the light bulb.
 ---wh

angie19   408   1 Reply

Mathguy3000

Six different one-drop samples in a Paramecium sp. population had the following numbers of ...

Six different one-drop samples in a Paramecium sp. population had the following numbers of ...

Six different one-drop samples in a Paramecium sp. population had the following numbers of organisms: 4, 6, 5, 3, 6, and 6. If 20 drops represent 1 mL of solution, and the volume of the solution is 40 mL, calculate the size of the population.

lindsaym   3166   2 Replies

bio_man

Six different one-drop samples in a Paramecium sp. population had the following numbers of ...

Six different one-drop samples in a Paramecium sp. population had the following numbers of ...

Six different one-drop samples in a Paramecium sp. population had the following numbers of organisms: 4, 6, 5, 3, 6, and 6. If 20 drops represent 1 mL of solution, and the volume of the solution is 40 mL, calculate the size of the population.

keight   1569   3 Replies

bio_man

Choose the correct gene formula for each of the following on the Punnet Square

Choose the correct gene formula for each of the following on the Punnet Square

A female heterozygous in both traits was crossed with a test cross male. The parent generation is illustrated in the following. (See attachment).

Choose the correct gene formula for each of the following locations on the Punnet Square. En

C_homes   944   7 Replies

BioTech99

What percentage of the population would you expect to be heterozygous for this trait?

What percentage of the population would you expect to be heterozygous for this trait?

If 85% of the population has Rh+ blood, a dominant trait, what percentage of the population would you expect to be heterozygous for this trait?

helpmepassbio   214   1 Reply

bio_man

How do you solve this equation

How do you solve this equation

The three gorges dam in china is the largest hydroelectric power station in the world in the world. At full capacity the dam can produce 2.30 X10^7 kWof power.
=== of the dam runs at full capacity for 24.0 hours, then the electrical energy prod

Stassi   293   1 Reply

decadidymus Val

Rearranging field strength formulas to solve for radius, r, demonstrates the Standard

Rearranging field strength formulas to solve for radius, r, demonstrates the Standard

This is all one question, can someone please help me out
Rearranging field strength formulas to solve for radius, r, demonstrates the Standard  of excellence for this outcome

( An airplane rises to position a

Stassi   287   1 Reply

bio_man

Efficiency =output/input X100

Efficiency =output/input X100

If a particular engine can generate 150MW of power, then the energy the engine can produce in one day is?

ok so the answer is 1.30X 10^13 J  *** I cant figure out the answer on my calculator  its an efficiency question so

Stassi   310   1 Reply

bio_man

Find the energy released or absorbed when one mole of helium-4 is produced in this reaction. Show ...

Find the energy released or absorbed when one mole of helium-4 is produced in this reaction. Show ...

Find the energy released or absorbed when one mole of helium-4 is produced in this reaction. Show your work including any formulas use, substitutions, and record your answer to the correct number of significant digits including the appropriate unit.

Stassi   1741   1 Reply

bio_man

The hydronium ion concentration ( H30+(aq) ) of solution with a pH of 6.7, expressed in scientific ...

The hydronium ion concentration ( H30+(aq) ) of solution with a pH of 6.7, expressed in scientific ...

the hydronium ion concentration ( H30+(aq) ) of solution with a pH of 6.7, expressed in scientific notation, is____X10^d mol/L

can anyone help me please

Stassi   245   1 Reply

whalesarefun

Explain how the use of biomassmlowers greenhouse emissions compared to the use of fossil fuels

Explain how the use of biomassmlowers greenhouse emissions compared to the use of fossil fuels

#1)This question is worth 3 marks.
 Explain how the use of biomassmlowers greenhouse emissions compared to the use of fossil fuels

#2 Energy Type
1)nuclear
2)gravitational
3)thermal
4)electric
5)solar
6)

Stassi   539   3 Replies

bio_man

A telecommunications satellite is in orbit 4,21X 10^7 m from the centre of the Earth

A telecommunications satellite is in orbit 4,21X 10^7 m from the centre of the Earth

A telecommunications satellite is in orbit 4,21X 10^7 m from the centre of the Earth - use that to answer the bottom portion

Earth's gravitational field strength at the position of the satellite, expressed in scientific n

Stassi   318   N/A

Stassi

Energy and the environment

Energy and the environment

The energy produced when 40 g of matter is converted to energy in a nuclear reaction is:
a.bX10^cd J **show work

***show work, including formula, substitution and answer rounded to the correct number of significant digits and with ap

Stassi   210   1 Reply

cloveb

Activities during Impulse Transmission along a Neuron

Activities during Impulse Transmission along a Neuron

Activities during Impulse Transmission along a Neuron
1. Diffusion of ions
2. Release of acetylcholine
3. Increase in the permeability of axon membrane
4. Increase in the use of ATP
5. Release of cholinesterase
6. Conduc

tjgilbs   616   1 Reply

bio_man

The genotypes of the father, Nicholas II of Russia; his wife, Alexandra...

The genotypes of the father, Nicholas II of Russia; his wife, Alexandra...

use the first picture attachment to question 1 and second picture attachment to question 3

1. The genotypes of the father, Nicholas II of Russia; his wife, Alexandra; and their son Alexis, respectively, are
   
a.XrY, XRXr, and XRY

jasminex0   5709   9 Replies

bio_man

To what voltage must the potential be increased

To what voltage must the potential be increased

a 100 MW power station generates energy at 26.0 kV. The power lines must carry only 200A of current to be efficient enough. To what voltage must the potential be increased? show your work ( formula,substitution, and round correctly and with the ap

angie19   1536   5 Replies

angie19

An engineering company is hired to improve the efficiency of a transmission line. In their report, ...

An engineering company is hired to improve the efficiency of a transmission line. In their report, ...

an engineering company is hired to improve the efficiency of a transmission line. In their report, they discuss ways that will allow them to reduce the current by a factor of four. Assuming that this is done, by what factor will the power losses be r

angie19   348   5 Replies

angie19

Human hearing span a range of frequencies from 20 Hz to 20 000 Hz. if the speed of sound is 330 m/s, ...

Human hearing span a range of frequencies from 20 Hz to 20 000 Hz. if the speed of sound is 330 m/s, ...

human hearing span a range of frequencies from 20 Hz to 20 000 Hz. if the speed of sound is 330 m/s, then the longest wavelength sound wave humans can hear is ____

angie19   509   2 Replies

angie19

what statement attached is completed by the information below

what statement attached is completed by the information below

#7      A positively charged test object is placed in the electric field caused by a (-) charged object. The test object is to the left of the negatively charged object. At the position of the test object, the correct direction of

angie19   432   N/A

angie19

Which of the following illustrates the principle behind a D.C. Motor

Which of the following illustrates the principle behind a D.C. Motor

Which of the following diagrams illustrates the principle behind a D.C. Motor

Please see attached photo
A)
B)
C)
D)

angie19   427   2 Replies

angie19

Which would be their best course of action to make the motor spin

Which would be their best course of action to make the motor spin

a group of students had built a homemade motor and were in the process of trying to test it. When they hooked it up to their battery they found they had wires in their coil got hot, but the coil would not turn. Of the following solutions, which wo

angie19   328   1 Reply

sara_007

Understanding the login behind the Hasselbach equation

Understanding the login behind the Hasselbach equation

I don't understand this part of equation

[H+][A-]
-----------
HA

Why are you multiplying H x A on top? Wouldn't you add H and A on top to find the proper concentration of these products?

Transgenic Rat   325   2 Replies

Transgenic Rat

LH influences the corpus luteum to secrete progesterone, which peaks during the

LH influences the corpus luteum to secrete progesterone, which peaks during the

LH influences the corpus luteum to secrete progesterone, which peaks during the
a) luteal stage at day 12
b) follicular stage at day 21
c) follicular stage at day 12
d) luteal stage at day 21

Progesterone levels are hig

inquirybio   5435   4 Replies

bio_man

Describe the pathways from the hypothalamus to the endocrine system's master gland

Describe the pathways from the hypothalamus to the endocrine system's master gland

Identify the master gland, it's regions of the brain and how it is controlled by the hypothalamus. Describe the pathways from the hypothalamus to the endocrine system's master gland and how this/these locations are used to con

patrickdyas   489   1 Reply

bio_man

Extending Mendel and STS - Selective breeding - Pattern of Inheritance - Autosomal Recessive Genetic ...

Extending Mendel and STS - Selective breeding - Pattern of Inheritance - Autosomal Recessive Genetic ...

Use first picture attachment for question 1 and the second picture attachment for question 2.

1. The genotypes of the father, Nicholas II of Russia; his wife, Alexandra; and their son Alexis, respectively, are
   
a.XrY, XRX

patrickdyas   777   1 Reply

bio_man

Sex determination in humans is a chance event. a family consisted of nine boys, including 2 sets of

Sex determination in humans is a chance event. a family consisted of nine boys, including 2 sets of

i believe it C. correct me if i'm wrong

Sex determination in humans is a chance event. a family consisted of nine boys, including 2 sets of twin boys. each pair of twins made a pitcher-catcher combination on a baseball team. the famil

RADIOhead   5893   9 Replies

duddy

Although the adenine base composition of DNA from the muscle tissue of...

Although the adenine base composition of DNA from the muscle tissue of...

Although the adenine base composition of DNA from the muscle tissue of the above organisms is very similar, these organisms vary greatly in the characteristics. the cause of this variation is that the DNA molecules of their respective organisms conta

ChuffChuffMahon   1701   1 Reply

bio_man

Sound waves and the nerve impulses created by them follow which pathway through

Sound waves and the nerve impulses created by them follow which pathway through

Sound waves and the nerve impulses created by them follow which pathway through the ear?

a) eardrum > cochlea >ossicles>auditory nerve
b) ossicles>eustachian tube>semicircular canals>auditory nerve
c)ossicles>

amer157   5280   2 Replies

duddy

A woman who is not a hemophiliac has a father who is a hemophiliac. If this woman marries a man who ...

A woman who is not a hemophiliac has a father who is a hemophiliac. If this woman marries a man who ...

48.A woman who is not a hemophiliac has a father who is a hemophiliac. If this woman marries a man who is a hemophiliac, what is the probability of them having a hemophiliac son?

Record your answer as a value from 0 to 1 , rounded to two d

EA   1732   2 Replies

psyche360

Compare the energy needed to make glucose with that produced in cellular respiration

Compare the energy needed to make glucose with that produced in cellular respiration

compare the energy needed to make glucose with that produced in cellular respiration

kylieestone   1058   2 Replies

Othello2