BIOC33H3 Final: Exam of Cell

48 views11 pages

aquamarinedeer877

25 Jan 2012

School

Department

Course

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Nucleus and nucleolus: not the leader of the cell, recognized in the cell theory, some cells don t have a nucleus (ex. Red blood cells- anucleate -shorter life: multi nuclei/coenocytic = many nuclei (lg cells, has a nucleus : cytoplasm ratio. Inside nucleus is nucleolus: double membrane- inner/outer, major function is dna storage, dna replication, genetic info provided, dna organized. Rna primer/dna primase- enzyme puts rna molecules on lagging parental strand, then dna polymerase adds sections of replicated dna (okazaki fragments: dna ligase- cuts out rna fragments and connect okazaki fragments xi. Dna polymerase can t function at ends of dna because of telomeres. Junk dna - 90% that aren t translated, of these form transposons- segments that are able to move from 1 dna strand to another jumping genes - sometimes jumps from junk to active dna = mutations . 2% of all mutations.

Related Questions

Animal cell:

1. Where are all the organelles listed found within the cell

2. Using the listed organelles in the animal cells, what function would each cell perform if it was apart of a hospital?

1) The smooth ER produces lipids neeed to help form __

a) Cell membrane

B) steroids

c) cholesterol

d) triglycerides

2)) Which type of microscopy is used to capture the surface of cells/organisms?

a) confocal microscopy

b) fluorescence microscopy

c) scanning electron microscopy

d) phase contrast microscopy

3) The outer membrane of the nuclear envelope is continuous with the membrane of the ____ and is usually covered with attached ribosomes.

a) nucleolus

b) plasma membrane

c) endoplasmic reticulum

d) cell wall

1. DNA, or the instructions for making proteins, is found within the _____ of the cell; while protein synthesis machinery is found in the _____ of the cell.

nucleus; cytoplasm

nucleolus; nucleus

cytoplasm;nucleus

nucleus; plasma membrane

2.During transcription, double stranded DNA is transcribed into a complementary molecule of

single-stranded DNA.

double-stranded DNA.

single-stranded mRNA.

single-stranded tRNA.

15. Place the following steps in the order in which they occur during gene expression.

mRNA is carried to ribosomes in the cytoplasm, DNA is transcribed into mRNA in the nucleus, mRNA is translated into polypeptides by tRNA

mRNA is carried to ribosomes in the cytoplasm, mRNA is translated into polypeptides by tRNA, DNA is transcribed into mRNA in the nucleus

DNA is transcribed into mRNA in the nucleus, mRNA is translated into polypeptides by tRNA, mRNA is carried to ribosomes in the cytoplasm

DNA is transcribed into mRNA in the nucleus, mRNA is carried to ribosomes in the cytoplasm, mRNA is translated into polypeptides by tRNA

BIOC33H3 Final: Exam of Cell

Document Summary

Get access

Related Documents

BIOL 1201 Chapter : Outline2

BIOL 2520 Lecture Notes - Lecture 5: Rcc1, Karyopherin, Enzyme

BIOL 2020 Lecture Notes - Lecture 11: Telophase, Mitosis, Lamin B2

Related Questions