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Biology - February 2007

[Selected]: All categories Science & Mathematics Biology

A. a petiole
B. the outline of the vascular bundle in a leaf
C. a branch from a vascular bundle at a node that extends into a leaf
D. a tiny bulge on the flank of the apical dome that grows into a leaf
E. a system of plant identification based on leaf morphology

2007-02-06 12:21:25 · 2 answers · asked by jarhead914 2

extracellular matrix, cell junctions, plasma membrane, integrin.

2007-02-06 12:08:32 · 3 answers · asked by whatsinaname07 1

microtubules and microfilaments are composed of protein subunits, while intermediate filaments are not.



intermediate filaments are permanent structures of the cell, while microtubules and microfilaments are often disassembled.



microtubules and microfilaments are much larger than intermediate filaments.



Intermediate filaments are involved in cell motility, while microtubules and microfilaments are not.

2007-02-06 12:06:53 · 3 answers · asked by whatsinaname07 1

centrioles are found in pairs.


centrioles are found in the centrosome of animal cells.


centrioles are compoed of microtubules arranged in a 9+0 pattern.


centrioles do not replicate.

2007-02-06 12:01:32 · 4 answers · asked by whatsinaname07 1

2007-02-06 12:00:05 · 3 answers · asked by babygurl 1

cilia are composed of a core of microfilaments, while flagella are composed of a core of microtubules.


microtubules are in both structures and they are arranged in a 9+) pattern.


flagella have a larger diameter than cilia.


flagella and cilia are composed of microtubules arranged in a 9+2 pattern.

2007-02-06 11:59:42 · 3 answers · asked by whatsinaname07 1

If the sequence of nucleotides on one strand of DNA molecule is GCCATTG, the sequence on the complementary strand is?

2007-02-06 11:58:30 · 3 answers · asked by Nina N 1

2007-02-06 11:58:25 · 5 answers · asked by ann a 1

2007-02-06 11:57:34 · 1 answers · asked by namso141 3

microfilaments, microtubules, intermediate filaments, or cilia.

2007-02-06 11:54:41 · 3 answers · asked by whatsinaname07 1

2007-02-06 11:51:37 · 4 answers · asked by ann a 1

a . been killed b. produced toxins. c. germinated. d. reproduced

Nitrogen is important because all organisms need it to make
a. proteins b. ATP C. DNA d. all of these

The process by which bacteria use enzymes to convert nitrogen gas into ammonia is called

A. Nitrogennation b. atmospheric separation c. nirtrogen fixation d. eutrophication

2007-02-06 11:36:22 · 4 answers · asked by Anonymous

1.If a mutation occurs during DNA replication in the formation of an egg or sperm cell, why is that mutation inherited.

2007-02-06 11:33:40 · 2 answers · asked by Nina N 1

1.State the effect of multiple replication forks on the speed of replication in eukaryotes.

2007-02-06 11:33:11 · 3 answers · asked by Nina N 1

2007-02-06 11:26:24 · 2 answers · asked by VICTORIA T 1

Would someone that is in a x-linked recessive pedigree chart, and is affected be AA or aa? Thanks

2007-02-06 11:18:27 · 3 answers · asked by Anonymous

Please help !

2007-02-06 11:05:28 · 1 answers · asked by Anonymous

2007-02-06 10:53:34 · 4 answers · asked by allieaddiction 1

sequence of the protein, how might you identify the genes expressed in a specific type of brain cells. Identify the gene for the neurotransmitter. And produce multiple copies of the gene for study, and produce a quantity of the neurotransmitter for evaluation as a potential medication.
PLEASE HELP! I DONT GET IT!

2007-02-06 10:47:10 · 3 answers · asked by iqbalkhanayesha 2

It has something to do with differentiation. I have found many sites stating why... but they all just confuse me =S

2007-02-06 10:46:53 · 3 answers · asked by cloudy_g_friend 2

with the natural evolutionary mechanisms of the past 4 billion years?

2007-02-06 10:42:50 · 2 answers · asked by iqbalkhanayesha 2

would prevent such abuses?

2007-02-06 10:40:34 · 2 answers · asked by iqbalkhanayesha 2

WHat microscopic observations show that cyanobacteria are prokaryotes and not eukaryotes?

2007-02-06 10:21:39 · 3 answers · asked by Anonymous

2007-02-06 10:13:54 · 4 answers · asked by Anonymous

2007-02-06 10:11:57 · 4 answers · asked by Anonymous

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