Define homogeneous equilibrium and heterogeneous equilibrium. Give two examples of each.

What is the difference between a heterogeneous equilibrium and a homogeneous equilibrium?

Match the most related term with the description: Gastrulation product

a. hCG

b. conception

c. chorion

d. syncytiotrophoblast

e. colostrum

f. amnion

g. amphimixis

h. morula

i. embryonic disc

j. neonate

k. gestation

l. inner cell mass

m. relaxin

n. blastocyst

The process that takes place as the zygote begins to divide immediately after fertilization is (a) gastrulation (b) cleavage $(c)$ meiosis (d) organ formation.

Consider the heterogeneous equilibrium process: C (s) + CO2 (g) <=> 2 CO (g) At 700 degree C, the total pressure of the system is found to be 4.50 atm. If the equilibrium constant KP is 1.52, calculate the equilibrium partial pressures of CO2 and CO.

Select the key term that corresponds to the following definitions.

the rate at which the concentrations of reactants decrease per unit time

a. activation energy ( $\left.E_{\text {act }}\right)$ b. catalyst c. chemical equilibrium d. collision theory e. endothermic reaction f. exothermic reaction g. general equilibrium constant $\left(K_{\text {eq }}\right)$ h. heat of reaction $(\Delta H)$ i. heterogeneous equilibrium j. homogeneous equilibrium k. ionization equilibrium constant $\left(K_{\mathrm{i}}\right)$ l. law of chemical equilibrium m. Le Chatelier's principle n. rate of reaction o. reaction profile p. reversible reaction q. solubility product equilibrium constant $\left(K_{\text {sp }}\right)$ r. transition state

Use three different colors of modeling clay or any other material to construct models that show the formation of the primary tissue layersendoderm, ectoderm, and mesodermduring gastrulation. Alternately, make models that show the three major body plans acoelomate, pseudocoelomate, and coelomate. Present your models to your class, and summarize the features shown on them.

Write the equation for the equilibrium involved in the solubility of barium phosphate, $\mathrm{Ba}_3\left(\mathrm{PO}_4\right)_2$, and write the equilibrium law corresponding to $K_{\text {sp }}$. (Hint: Remember that it's a heterogeneous equilibrium.)

Explain why the position of a heterogeneous equilibrium does not depend on the amounts of pure solid or pure liquid reactants or products present.

During which stage of embryonic development does the neural tube form? A implantation $\hspace{0.35cm}$ C neurulation B gastrulation $\hspace{0.5cm}$ D fertilization.

Does the following equation represent a homogeneous equilibrium or a heterogeneous equilibrium? Explain. your answer. $\mathrm{H}_{2} \mathrm{O}(\mathrm{s}) \rightleftharpoons \mathrm{H}_{2} \mathrm{O}(\mathrm{l})$

Select the key term that corresponds to the following definitions.

the highest point on the reaction profile

a. activation energy ( $\left.E_{\text {act }}\right)$ b. catalyst c. chemical equilibrium d. collision theory e. endothermic reaction f. exothermic reaction g. general equilibrium constant $\left(K_{\text {eq }}\right)$ h. heat of reaction $(\Delta H)$ i. heterogeneous equilibrium j. homogeneous equilibrium k. ionization equilibrium constant $\left(K_{\mathrm{i}}\right)$ l. law of chemical equilibrium m. Le Chatelier's principle n. rate of reaction o. reaction profile p. reversible reaction q. solubility product equilibrium constant $\left(K_{\text {sp }}\right)$ r. transition state

Explain why the position of a heterogeneous equilibrium, does not depend on the amounts of pure solid or pure liquid reactants or products present.

What do all deuterostomes have in common?

A. Adult forms are bilaterally symmetrical.

B. Spiral and determinate cleavage.

C. The blastopore formed during gastrulation becomes the anus.

D. The group only consists of invertebrates.