What statements are true about the metaphase checkpoint? Select all that apply.
The metaphase checkpoint occurs during mitosis.
If the metaphase checkpoint were not in place, cells could receive too many or too few
chromosomes.
The growth, condition inside and outside of the cell, and DNA areChecked during the metaphase
checkpoint.
If conditions are not favorable, the metaphase checkpoint keeps the cell in the G2 phase and does
not allow it to move ahead to the metaphase.

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i. e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses