Science (questions)
ATP is this cells mean form of energy currency. How is energy released from an ATP molecule
ATP breaks down to produce ADP and a phosphate group, releasing energy
Why does the study of cell membranes lead to a better understanding of cell function
All materials needed for cell functions must pass through the cell membrane.
Proteins are long molecules that are built from smaller molecules called monomers. What is the name given to monomers of proteins
Amino acids
The sodium potassium ion pump found in some cell membrane is made of which of the following basic structural components
Amino acids
During which phase of mitosis do chromatids separate and move to opposite ends of the cell
Anaphase
Some genes code for the proteins that regulate cell growth and division. Which of the following are caused by uncontrolled, abnormal cell division
Cancers
Which statement describes how photosynthesis and cellular respiration are interrelated
Carbon dioxide and water release by cellular respiration are used photosynthesis
The cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of new scientific knowledge
Cells form through spontaneous generation
Mitosis and Milos is our processes involved in cellar reproduction. Which of the following describes an event that results from mitosis but not meiosis
Daughter cells that are identical to the parent cell
What is the primary function of the cell membrane
Defending against foreign particles
Single change in the sequence of nitrogen bases in a DNA molecule would most likely result in which the following
Gene mutation
As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloric acid, and the small intestine has a pH ranging from 7 to 9. HCI converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine
It becomes inactive
Which of the following pairs incorrectly matches a cell structure with its function
Lysosome: protein synthesis
The genetic material of all living organism is composed of which of the following
Nucleic acid's
There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells
Ribosomes
Which of the following best describes how plants obtain the reactance of photosynthesis
Roots capture water, and chloroplast capture sunlight
The sequence of bases on one strand of a DNA molecule is AGCCTHE. After application of the strand of DNA, what is the sequence of nitrogen bases on the complementary strand
TCGGATC
Which of the following has the greatest affect on a protein molecule Produced by a ribosome
The nitrogenous bases in DNA
Why might scientist use color dyes when viewing items under a compound light microscope
To make them more visible
Compared to most other substances, a great deal of heat is needed to raise the temperature of water by given amount. Which property of water makes a resist the change in temperature
Water has a high heat capacity
Crossing over contribute to the recombination genetic material in offspring. When does crossing over happen during meiosis
When homologous chromosome pair and proteins of the chromatids break off are are exchanged.