quarterly 3 mastering
The nuclei of eukaryotic cells are characterized by
A double membrane
What is the difference between "free" and "attached" ribosomes?
Free ribosomes occur in the cytoplasm, whereas attached ribosomes are found on the endoplasmic reticulum
All cells possess all of the following components EXCEPT
a nuclear membrane
Which of the following is a source of replacement electrons for photosystem II during photosynthesis?
h2o
If you forget to water your favorite plant, all of the following will occur at a cellular level EXCEPT
turgor pressure will build up in the cell
Light reactions produce
ATP, NADPH, and O2.
Two similar-sized animal cells are placed in a 0.5% sucrose solution. Cell A enlarges for a while and then stops; cell B continues to enlarge and finally ruptures. Which of the following must have been true at the beginning of the experiment?
Cell B has a higher concentration of sucrose than cell A.
How does gel electrophoresis help when analyzing samples of DNA?
It separates DNA fragments by length
How can a single gene code for more than one protein?
The exons within an mRNA can be spliced together in different ways
How do scientists generate large amounts of a particular piece of DNA they wish to work with?
They insert the DNA into a bacterial plasmid.
Why do scientists make plants and farm animals that are transgenic for human antibodies and hormones?
This is a way to produce large amounts of these products cheaply
What is the current status of transgenic food products in the United Status?
Transgenic food is commonly found in the grocery store
Active transport requires all of the following EXCEPT:
aquaporins
Which of the following occurs in the nucleus?
both transcription and replication of genetic material
Plasma membranes are best described as a
double layer of phospholipids with hydrophobic tails oriented toward one another
The secretion of excess water via a vesicle of a Paramecium cell is an example of
exocytosis.
The hydrophilic regions of a membrane protein are most likely to be found
exposed on the surface of the membrane.
Lactose is a disaccharide of glucose and galactose, and its digestion requires the actions of the enzyme lactase. If lactose is eaten as part of the diet but is not digested by lactase, this sugar is then metabolized by bacteria in the intestine, leading to the symptoms of lactose intolerance. Lactose intolerance, therefore, results from a(n)
lack of hydrolysis of lactose.
Human muscle cells can perform
lactic acid fermentation and aerobic cellular respiration
Human eye color is the result of
polygenic inheritance
Transcription is the process of
synthesizing an RNA molecule using a DNA template
Traits controlled by sex-linked recessive genes are expressed more often in males because
the male has only one gene for the trait
Glucose synthesis during photosynthesis requires that
the products of light-dependent reactions must be available
A mutant plant cell with no chloroplasts would
till be able to use carbohydrates as an energy source
Which of the following binds to codons?
transfer RNA
