Biology - November 2007

2007-11-13 06:09:45 · 0 answers · asked by damigurl05 1

2007-11-13 05:14:58 · 6 answers · asked by Sarah W 1

2007-11-13 04:39:09 · 11 answers · asked by ayanda357 2

12. Based on the results of your chromatography experiments, does the grey pigment appear to be under the control of the gene for shell color?
a. Yes
b. No

13.Recessive alleles are always expressed.
a. True
b. False

14. Red-shelled glyptodonts are always homozygous dominant for shell color.
a. True
b. False

15.What is the probability of two yellow-shelled glyptodonts having a red-shelled offspring?
a. 75%
b. 50%
c. 25%
d. 0%

16.In the electrophoresis exercise, the number of proteins detected in the samples from red-shelled glyptodonts was ________ the number detected in samples from yellow-shelled glyptodonts.

a. greater than
b. less than
c. equal to
d. much greater than

17.The size of proteins can be measured in terms of ________ daltons.

a. micro
b. milli
c. nano
d. kilo

2007-11-13 02:59:01 · 3 answers · asked by Anonymous

6. In the electrophoresis exercise, the protein profiles (i.e., the number of proteins detected and their respective masses) of the red- and yellow-shelled glyptodonts were the same.
a. True
b. False

7.If two red-shelled glyptodonts have a yellow-shelled child,
a. both parents are homozygous with respect to shell color.
b. at least one parent has a recessive allele for shell color.
c. neither parent has a recessive allele for shell color.
d. each parent has a recessive allele for shell color.
I
8.In glyptodonts, shell color is an inherited trait.
a. True
b. False

9. When two yellow-shelled glyptodonts mate, their offspring will always have yellow shells.
a. True
b. False

10. In glyptodonts, shell color is under the control of ________ gene(s).
a. 1
b. 2
c. 3
d. 4
e. None of the above

11. In glyptodonts, the gene controlling shell color has ________ alleles.
a. 1
b. 2
c. 3

2007-11-13 02:53:32 · 2 answers · asked by Anonymous

1. Genes are
a. inheritable.
b. found at a specific location on a chromosome.
c. sequences of nucleotides on a DNA molecule.
d. All of the choices are correct.

2.Test crosses are required to determine the genotype of homozygous recessive individuals.
a. True
b. False

3. If present, dominant alleles are
a. always expressed.
b. never expressed.
c. only expressed when the organism is homozygous.
d. only expressed when the organism is heterozygous.
e. None of the choices

4. Which technique can be used to separate the components of a complex mixture of relatively small organic molecules based on their relative solubility?
a. Electrophoresis
b. Thin-layer chromatography
c. Liquid scintillation counting
d. Scanning electron microscopy

5.
Which technique is used to separate proteins from each other on basis of molecular mass?

a. Electrophoresis
b. Thin-layer chromatography
c. Liquid scintillation counting

2007-11-13 02:49:12 · 4 answers · asked by Anonymous

Cancer cells have been isolated in which cell division but not other process occurs abnormally. The organelle most likely to be defective in these cancer cells is the_________.

a. smooth endoplasmic recticulum

b. mitochondria

c. microtubles

d. ribosomes


Is it a??? Maybe b. I can't find the answer in my book anywhere!!

2007-11-13 02:06:19 · 5 answers · asked by LJC 2

They are the same genus and species.
They are the same species.
They are the same genus.
They are not the same genus.

2007-11-13 02:00:16 · 3 answers · asked by Anonymous

The system of binomial nomenclature was developed by
1. Linnaeus.
2. Aristotle.
3. Mayr.
4. Darwin.

The scientific name for humans is correctly written as
1. Homo sapiens.
2. Homo Sapiens.
3. Homo sapiens.(italicize)
4. Homo Sapiens. (italicize)

Biologists classify organisms based on their
1. appearance.
2. structure.
3. ability to interbreed.
4. all of the above.

In which category are two members most closely related?
1. class
2. family
3. genus
4. order

2007-11-13 01:59:17 · 6 answers · asked by Anonymous

Having spent a fair bit of time reading the various evolution/creationism questions and answers I see that, for the most part, the people on the pro-evolution side understand what the theory means and explain it fairly well.

But there are common mistakes, logical errors, and misstatements made all the time by creationists to defend their view of things. While some of these might be considered judgement calls, the ones below are not. Yet they recur at such a dramatic rate that I wonder about the cognitive skills of the people who perpetuate them. A few examples of errors made in defending creationism.

1. "Evolution is just a theory." How many times do people have to be told that a "theory" is not the same as a "scientific theory?" They are not the same words. So basing any arguments on what "theory" means outside of science proves nothing more than a lack of understanding.

to be continued...

2007-11-13 01:46:21 · 13 answers · asked by relaxification 6

1. be specific with your answer
2. answer in a complete sentence
3. i need it before November 19, 2007
4. if you followed them and i am satisfied with the answer i will choose you as the best answer.

P.S.

To those who also answered thanks you all really helped me alot and thanks in advance!

2007-11-13 01:26:53 · 1 answers · asked by allen jay 2

Post a reason you think explains the difference in cellular function within the cellular respiration between the heart and the brain.

2007-11-13 01:17:55 · 2 answers · asked by Mark h 1

2007-11-13 01:17:24 · 1 answers · asked by blaqprinceZz 1

2007-11-13 01:07:39 · 8 answers · asked by Anonymous

2007-11-13 01:06:56 · 1 answers · asked by Benadino 1

All family trees show the descendents of an ancestor. The theory of common descent is that all life originated from single cellular organisms. Now, gradually during our evolution our quadruped ancestors became bipeds. Are we humans their only descendents or do non-human biped hominids exist, either today or in the fossil record?

My theory is that the first biped hominids had many descendents, whom we obviously share a common ancestry. Some were unable to adapt to their habitat, others returned to quadrupedalism and a small group did adapt and formed us humans today.

SIDENOTE: This transition was just a small part of our evolution and we can see that several hominid species account for this. But how about our magnitude of touch sensors and face muscles. There must be several transitional species for the evolution of each of these traits. We are familiar with the descent of man pictures, but in reality there must have been thousands of species involved in our evolution. Thoughts?

2007-11-12 22:19:23 · 3 answers · asked by Future Human 1

I mean, my little brother can barely get a shot in before I plaster him. Shouldn't he be a higher evolved species than me?

2007-11-12 19:39:40 · 8 answers · asked by Henning Warble 2

Teleportation??..
Or maybe some special powers??..

what is your stand??

2007-11-12 18:48:50 · 4 answers · asked by Kirin Desuke 2

Will it mean that the the rate of consumption will be greater because it will take less amount of time for the the consumption of oxygen.

2007-11-12 17:02:41 · 2 answers · asked by Anonymous

a.

Both are X-linked.
b.

Heterozygotes for sickle cell anemia have some resistance to malaria.
c.

Both are autosomal recessive.
d.

Both are dominant.
e.

Heterozygotes for malaria have some resistance to sickle cell anemia

2007-11-12 15:45:09 · 3 answers · asked by dreams 2

2007-11-12 15:42:49 · 26 answers · asked by Anonymous

is it a change in DNA sequence but no change in protein sequence, or is it a change in genotype but no change in phenotype?

2007-11-12 14:50:19 · 0 answers · asked by urox555 2

Explain everything please!!!??

2007-11-12 13:38:59 · 3 answers · asked by Anonymous

The total flow rate through a 1 cm radius tube of length 1000 cm is 10 liters per minute. What is the average velocity of the fluid?

2007-11-12 13:27:57 · 1 answers · asked by ShanaReynolds 1

TRUE OR FALSE
1) If our body rejects a medication, it it due to MARKER proteins

2) As a cells volume increases the cell's surface are DECREASES

3) MITOCHONDRIA produce most of the cells proteins

4) GOLGI are responsible for assembling amino acids with proteins

5) The HYDROPHOBIC end of the phospholipid faces the cytoplasm
GOLGI are responsible for assembling amino acids with proteins

2007-11-12 13:17:37 · 5 answers · asked by mz. * 1

2007-11-12 13:12:26 · 8 answers · asked by j.ean_831 2

2007-11-12 13:12:07 · 2 answers · asked by Max H 1

2007-11-12 13:10:55 · 4 answers · asked by Anonymous

2007-11-12 13:10:40 · 2 answers · asked by Anonymous

I need some help, I've searched my textbook and can't find the answers.

How do the processes "Light-dependent reactions" and Light-independent reactions" relate to each other? Where does each occur?

Thank you so much!

2007-11-12 13:08:20 · 2 answers · asked by MeGirl 2