2. Describe the structure of a typical amino acid and explain how they chemically combine to make a protein

3. Describe the process of catabolic repression by glucose concentration, as seen in the lac operon control.

1. Explain the primary differences between sea urchin and frog development during the processes of fertilization, cleavage, and gastrulation. In your answer, provide a basic description of each process, describe the developmental stage that results, explain the differences between sea urchin and frog embryos, and use the terms cortical reaction, cortical rotation, induction, and involution.

Fertilization:

Cleavage:

Gastrulation:

What is the direct cause of ovulation?

Succession/resilience/fire ecology: Should ecosystems that are highly resistant to disturbance also be highly resilient, or, would they be inversely related where resistant ecosystems would have low resilience (and vice versa)?   There is no known consistent answer to this in the ecology literature, so providing justification for one position or providing logical arguments for both positions would be perfectly acceptable.

Draw the lac operon promoter region with all its regulators (and polymerase if appropriate) in the PRESENCE OF LACTOSE and the ABSENCE OF GLUCOSE in the growth media in bacteria with a mutation in the lac repressor which prevents it from binding lactose and a mutation in the CAP that prevents it from binding cAMP. Indicate the level of transcription from the lac operon under those conditions (no expression, low expression, or high expression).

My assignment is to write an essay no more than 4 pages on this topic. I've already done about half a page but my prof doesn't have the best notes and I'm not to good with research.

What are the non-molecular epigenetic mechanisms? What is their importance to evolution and how they challenge traditional evolutionary theory. You must use examples.

How the following processes each contribute to animal development: regional specification, cell differentiation, morphogenesis, growth, and developmental time (also known as temporal control). Use citations from peer-reviewed scientific journal articles or the textbook to support your ideas.

Entropy is

A. order

B. complexity

C. disorder

D. Both order and disorder are correct

E. Both complexity and disorder are corre

How can small molecules make their way past the cell membrane?

A. they pass through transmembrane channel proteins

B. they are hydrophobic

C. they are hydrophilic

Cell theory states that

A. life is spontaneously generated

B. New cells come only from pre-existing cells

C. cells can form from non-organic material

Animals store energy in a polymer composed of many glucose molecules called:

A. glycogen

B. cellulose

C. chitin

D. starch

A cell produces 36 ATPs per glucose, however, if you calculated the total energy in a glucose molecule, 90 ATPs should be generated. Why is this so?

A. Some of the energy is destroyed

B. Some of the energy is used to do work in the cell

C. Some energy is lost as heat

In animal cells the primary organelle that generates molecules of ATP is the

A. ribosome

B. lysosome

C. Golgi body

D. mitochondrion

What is osmosis?

A. entry of water into cells through transmembrane channel proteins

B. formation of ATP

C. asorption of water through a membrane

Which organelle carries out the bulk of respiration?

A. chloroplasts

B. Golgi apparatus

C. mitochondria

The process of converting the energy from food molecules into energy of ATP is

A. cellular respiration

B. catalysis

C. thermodynamics

D. photosynthesis

bjects that are moving are said to possess:

A. kinetic energy

B. potential energy

C. entropy

D. living energy

Glycolysis

A. uses oxygen

B. does not use oxygen

C. uses carbon dioxide

What are the inputs and the output molecules for respiration?

A. input sugar and oxygen; output carbon dioxide and water

B. input oxygen and water; output sugar and carbon dioxide

C. input carbon dioxide and water;output sugar and oxygen

what is the connection between B-oxidation and the urea cycle?

The most common methods of microbial control might be hand washing and cooking of food.

a. Explain, in detail, how soap and water disrupt a membrane at the molecular level.

b. Explain how heat disrupts proteins, referencing the different levels of protein structure.

c. Design an imaginary device that inactivates non-enveloped human viruses. What does the device do to the virus?

Describe how tree rings form and how they can be used to address scientific questions. In your answer, be sure to address both parts of this question (how they form, how we use them) with specific supporting details.

What is a plant? Provide a thorough answer that clearly defines plants and highlights their synapomorphies. Define key terms in your own words. In your answer, also distinguish plants from their closest living relatives.

(17) Differences in phenotype are called variations. Which of the following types of variations occur?

(A) harmful (B) neutral

(C) helpful (D) all of the above

(24) An Organism's Phenotype refers to its:

(A) genetic composition (B) physical traits

(C) both genetic compositions or its physical traits (D) neither its genetic composition or its physical traits

(25) In Mendelian genetics,_____allele(s) determine the production of a particular physical trait (or characteristics).

(A) one (B) two

(C) three (D) four