General Biology

The alleles distributed to male and female gametes, respectively, are...

The alleles distributed to male and female gametes, respectively, are...

In some species (ex. birds, lizards, insects) the male sex chromosome are homozygous while the female sex chromosomes are heterozygous.
The alleles distributed to male and female gametes, respectively, are
a) male: W, W female: Z, W

kasy110   3201   2 Replies

kasy110

(punnet sqaure) Given the info. what is the probability of obtaining a...

(punnet sqaure) Given the info. what is the probability of obtaining a...

Given the info. what is the probability of obtaining a vertiacally striped cat from the P1 cross of SsTt x SsTT?

SSTt: vertically striped cat pattern shows

a) 9/16
b) 3/16
c) 3/4
d) 1/4

I got 2/16? 

kasy110   4291   7 Replies

kasy110

One reason an ectopic pregnancy is unsuccessful is that

One reason an ectopic pregnancy is unsuccessful is that

One reason an ectopic pregnancy is unsuccessful is that..

a) FSH production ceases and the corpus luteum degenerates
b) adequate structures do not develop to transfer materials between the maternal and embryonic blood
c) the oute

kasy110   1732   3 Replies

bio_man

Essential Cell Biology, 3rd Edition, by Alberts (Chapters 14 & 15)

Essential Cell Biology, 3rd Edition, by Alberts (Chapters 14 & 15)

These are the lectures from my Cell Biology class. 

Attached are Chapters 14 & 15.  Both chapters come in two parts.     

I will attach the animations that go with these lectures on other th

12

Bio_World100   29719   14 Replies

Bruce Wayne

how is the percentage of worlds literacy and world poverty related ?

how is the percentage of worlds literacy and world poverty related ?

like the more people are educated the less poverty there is but how and why can you give me some points ?

sheldon   830   1 Reply

bio_man

everyday examples

everyday examples

Everyday examples of a process requiring energy (physical or chemical)

JOJO   871   1 Reply

George

What physical and chemical properties of fibers are utilized in forensic science

What physical and chemical properties of fibers are utilized in forensic science

I have looked in the Criminalistics book (Saferstein) and I believe the answer is in 219-232 but I do not understand the material I have read it about 20 times. Im just not understanding what is meant by physical and chemical properties can anyone he

Franny112   1745   1 Reply

peach12347

Anyone have week 3 crossword for anatomy & Phsiology?

Anyone have week 3 crossword for anatomy & Phsiology?

I have the questions if I should post them... Let me know.... Thanks for everything!

raideirnluv   1901   5 Replies

andalitza

cellular process examples

cellular process examples

2 examples of a cellular process which requires energy
2 examples of a cellular process that DOES NOT require energy

JOJO   3648   3 Replies

bio_man

Population Biology

Population Biology

i could use some help with "hypothesis"...not good at all.

1.   Make a hypothesis about how you think the two species of paramecia will grow alone and how they will grow when they are grown together.

2.   Explain how you t

sahhl38   2796   3 Replies

ace

The Evolutions of Population (Help!)

The Evolutions of Population (Help!)

A large population of laboratory animals has
been bred randomly for a number of gener-
ations. There was an interesting revelation.
The scientists noted that there was neither
an increase nor a decrease in the frequency
of an

nicolenam   840   2 Replies

harrypot

Sci130 Final help

Sci130 Final help

Kyla is studying seal diving and noticed that the heart rate of a seal dips to a few beats per minute during a dive. Why?

A. Aerobic cellular respiration ceases during a dive.   

B. A large share of the blood oxygen supply is dive

ScoutMomAng   1056   2 Replies

Angela

Evolution, Speciation

Evolution, Speciation

Please help me with this question

Thanks

1. How might the increasing isolation of populations in these forests influence their evolution?

sweetangel   837   2 Replies

sweetangel

Can anyone help with physioex 9.0 exercise 7 activity 2

Can anyone help with physioex 9.0 exercise 7 activity 2

can any one help with questions 16-23 for EX 7 activity 2

16.   What lung values changed (from those of the normal patient) in the spirogram when the patient with emphysema was selected? 
Why did these values change as they

biggG   1823   1 Reply

bio_man

which of the following is an important charecteristic of the tropical rain...

which of the following is an important charecteristic of the tropical rain...

which of the following is an important charecteristic of the tropical rain forest biome?
A. High light levels on the forest floor
B. The dominace of a smaller number of tree species
C. More widely flucating temperatures than in most ot

brenn23   735   1 Reply

calcguy

You examine a population of carp in a small pond feeding exclusively upon tadpoles. The carp is the

You examine a population of carp in a small pond feeding exclusively upon tadpoles. The carp is the

You examine a population of carp in a small pond feeding exclusively upon tadpoles. The carp is the only tadpole predator. The average tadpole weighs 1/4 gram and the average carp weighs 4 grams. Approximately what minimum sustainable population size

sahhl38   1044   1 Reply

how_mendel

Please help I am almost done but can't these in the book

Please help I am almost done but can't these in the book

If a drug were to block the discharge of acetylcholine presynaptic vesicles at the neuromuscular junction, what would be the consequence?
   A. Muscle contraction.   
    B. Continuous muscle cell depolarization.   
    C. Continuous action of

peannutsmop   1267   2 Replies

how_mendel

Explain the terms, hyperpolarized and summation as they apply to a neuron?

Explain the terms, hyperpolarized and summation as they apply to a neuron?

Explain the terms, hyperpolarized and summation as they apply to a neuron?

Muskaan   2000   2 Replies

how_mendel

Graeme the gardener notices that some of his plants have spots of leaf death symptomatic of calcium

Graeme the gardener notices that some of his plants have spots of leaf death symptomatic of calcium

Graeme the gardener notices that some of his plants have spots of leaf death symptomatic of calcium deficiency. What is wrong? Where do plants normally obtain calcium?

 A. Calcium is absorbed from the soil. 
 B. Calcium is cons

sahhl38   788   1 Reply

how_mendel

Bandi is a forester who notices that pine trees are more drought tolerant than cedar trees. What is

Bandi is a forester who notices that pine trees are more drought tolerant than cedar trees. What is

Bandi is a forester who notices that pine trees are more drought tolerant than cedar trees. What is a possible explanation for the pine tree advantage?

 A. More companion cells. 
 B. Root cap. 
 C. More stomata. 

sahhl38   1082   1 Reply

how_mendel

Acetyl-CoA

Acetyl-CoA

Acetyl -CoA is a key molecule in both oxidative phosphorylation and the synthesis of fat. Explain how the cell can regulate its metabolism if the same molecule is used in both energy production and biosynthesis.

Does this have anything to

Gillygirl27   809   2 Replies

ppk

FINAL

FINAL

need ap 132 final

leighbrown   629   1 Reply

RADELA101

If a bacteria attacked juxtaglomerular apparatus (where rennin is secreted)

If a bacteria attacked juxtaglomerular apparatus (where rennin is secreted)

If a bacteria attacked juxtaglomerular apparatus (where rennin is secreted) in the kidney, and this part of the nephron no longer worked, what specific pathways would be affected?

Muskaan   3543   1 Reply

star

It is unlikely that you will catch distemper from your cat. What is one mechanism that could render

It is unlikely that you will catch distemper from your cat. What is one mechanism that could render

Question 29 of 60 1.667 Points
It is unlikely that you will catch distemper from your cat. What is one mechanism that could render some viruses host-specific? 

 A. They reproduce using DNA or RNA. 
 B. They have prot

sahhl38   1140   1 Reply

bio_man

What is the difference between a vector and a plasmid?

What is the difference between a vector and a plasmid?

What is the diffence between a vector and a plasmid?  One has DNA inserted but which one?

Dancertb   4773   1 Reply

bio_man

Midterm- SCI 130

Midterm- SCI 130

Emily is a forest pathologist who noticed large fungal growths on the outside of a tree stem. If the fungus penetrated the side of tree, what tissue would first be compromised?
 A. Cambium. 
 
 B. Phloem. 
 
 C.

Mira8642   1411   2 Replies

bubbanme08

Please help with these questions they are due 1-1-12

Please help with these questions they are due 1-1-12

Chris is a biotechnologist who is designing injectable antibodies to fight the Ebola virus. What structure must he understand in order to design an effective antibody against Ebola?

   A. Epitope   
          B.

peannutsmop   1469   3 Replies

biolove

Jane is a horticulturalist cultivating orchids. She has to be very careful to preserve other species ...

Jane is a horticulturalist cultivating orchids. She has to be very careful to preserve other species ...

Jane is a horticulturalist cultivating orchids. She has to be very careful to preserve other species that attach to the roots of the orchids and feed them, as is the case with most plants. To what group do these other species belong?
 A. Fungi.

Drewsicle10   877   1 Reply

boeing

Riley had spent too much time in the sun and he developed skin cancer that spread to his liver and l

Riley had spent too much time in the sun and he developed skin cancer that spread to his liver and l

Riley had spent too much time in the sun and he developed skin cancer that spread to his liver and lungs. How would you best characterize this pattern of cancer?
 A. Transformation. 
 
 B. Benign. 
 
 C. Metastas

Mira8642   1210   3 Replies

Just Me

I need help with a question please.

I need help with a question please.

 How can  studing  anatomy and physiology change in the next ten years and why?

bigmama99   625   1 Reply

how_mendel

Suggest two ways a synthetic biologist can change the course of evolution.

Suggest two ways a synthetic biologist can change the course of evolution.

Please help me with these questions...

1. Suggest two ways a synthetic biologist can change the course of evolution.

2. 6. In one sentence each, describe
a) one positive effect of direct artificial selection
b) one ne

sweetangel   2082   3 Replies

sweetangel

PLEASE HELP ME!!!

PLEASE HELP ME!!!

Scientists estimate that twenty percent of the earth’s population consumes eighty percent of the earth’s resources. What does this imply?
 A. Eighty percent of the population has inadequate renewable resources. 

zrivera32   963   2 Replies

zrivera32

Biology - Speciation

Biology - Speciation

These are my questions. Would any one answer for me. I want to compare answers to my own written answers. Thanks.

1. Identify and explain the type of natural selection that accounts for the evolution of the hallow bone of birds, which mak

sweetangel   6240   2 Replies

zoeksyrianos

PhysioEx: Renal System Physiology

PhysioEx: Renal System Physiology

EXERCISE 9:  RENAL SYSTEM PHYSIOLOGY

ACTIVITY 1:  The Effect of Arteriole Radius on Glomerular Filtration   Answers
1.   According to your lab manual, in humans the glomerular filtration rate (GFR) ranges from ____

CAR3153   2073   N/A

CAR3153

I need help with physioex 9 exercise 9

I need help with physioex 9 exercise 9

Will someone please PM me or email me exercise 9 renal system physiology? britni_pena@yahoo.com

britni1186   1804   4 Replies

lemur

How would the epithelial cells obtain oxygen and nourishment?

How would the epithelial cells obtain oxygen and nourishment?

Alexis examined a microscopic section of glandular epithelium but could not see any blood vessels. How would the epithelial cells obtain oxygen and nourishment?
 A. From muscle cells. 
 
 B. From transitional epithelium. 

CDB   961   1 Reply

duddy

NEED HELP

NEED HELP

Malti had a large meal and her stomach continued to secrete digestive juices for several hours. Why?
 A. Gastrin is released into the stomach, which in turn stimulates gastric glands. 
 
 B. Pepsin in the stomach stimulates the

zrivera32   758   2 Replies

duddy

More questions

More questions

Mae is an airline hostess who has difficulty sleeping at hotels overseas because of the time change. Ingestion of what kind of pill might best help her sleep?
 A. Oxytocin. 
 
 B. Prolactin. 
 
 C. Melatonin.&nbs

zrivera32   1631   1 Reply

duddy

Physio EX9.0 Ex.3 all activities

Physio EX9.0 Ex.3 all activities

need help with this assignment

gaschoolgirl   904   1 Reply

duddy

2 Protein Questions

2 Protein Questions

1. A mutation is found in the gene that codes for the Lacl repressor protein gene.  The protein no longer performs its intended function.  Explain what would be the outcome at the gene level and for the E coli.

2. Explain how the

livestrong136   1083   2 Replies

duddy