Biology
In DNA adenine normally pairs with:
Thymine
The significant figures in 0.005436 are:
4
A CN triple bond has ___ electrons occupying the bonding molecular orbitals
6
When a ball is thrown straight up with no air resistance the acceleration at its highest point is (directionally) ____
Downward
An mRNA molecule with a point mutation creates a protein that is observed to be 337 amino acids shorter than the wild-type protein. The mutation was most likely a:
Nonsense mutation
A nonsense mutation involves the creation of a ____ codon
stop
The reducing agent in the unbalanced equation
Zn + MnO2 + H2O ----> Zn(OH)2 + Mn2O3 is:
Zn
The formula representing butane is:
CH3CH2CH2CH3
A car drives at a steady speed around a perfectly circular track. Both the acceleration and net force on the car point ____
Inward
Cancerous cells are specifically targeted by this immune cell type:
Natural killer cells
In meiosis recombination occures in:
Prophase I
Carbon monoxide has ten bonding electrons and four antibonding electrons. Therefore it has a bond order of:
3
A hydrocarbon molecule is considered to be saturated if the molecule contains:
Single covalent bonds
An object is moving with constant non-zero velocity. The net force on the object is ____
Zero
Alcohol consumption causes acute inhibition of vasopressin secretion as a result the urine becomes:
more dilute
In a Robertsonian translocation fusion occurs at the:
The vapor pressure of a solution containing a nonvolatile solute is directly proportional to the:
mole fraction of solvent
A hydrocarbon with no ring structure, no double or triple bonds is called an:
Alkane
Satellite A has twice the mass of satellite B and moves at the same orbital distance from Earth as satellite B. The speech of B is ____ to the speed of A.
Equal
A patient is brought to the emergency department following a sharp object injury from the abdomen near the belly button. Where would you expect the blood and gastrointestinal contents to accumulate?
Peritoneal cavity
The approximate size of the bacterial cell is ___ to ___ micrometers in diameter
0.5 to 1.0
The F-S-F bond angles in SF6 are
90 degrees and 180 degrees
As a chemical bond forms between 2 hydrogen atoms in a system, energy is released and the stability of the system _____
Increases
A ball is thrown horizontally from the top of a tower at the same instant that a stone is dropped vertically. Which object is traveling faster when it hits the level ground below if neither of them experiences any air resistance?
The ball
A scientist examines a triceps brachii muscle biopsy to understand the cross-bridge cycle in muscular contraction. Under microscopic investigation, myosin heads were seen attached to the actin filaments. Which molecules are needed to separate myosin from the actin filaments?
ATP