What is the first step normally taken when you look through the ocular lenses?

What does it mean that the image is inverted when you look through the ocular lenses?

What is the difference between the coarse adjustment knob and the fine adjustment knob? When is it appropriate to use them?

What new details are you able to see on the slide when the magnification is increased to 10x that you could not see at 4x? What about 40x?

The table below contains a list of species and their abundances for two grassland communities around Serengeti National Park, Tanzania. Use the below data to answer the following question.

Using the Shannon diversity index, what is p_i for Sporobolus ioclados?

Propose a new 'enzyme exercise' which could be adapted to online learning (i.e, perhaps an experiment that can be conducted in the kitchen). The experiment teaches the main concepts about enzymes and you describe an experiment with independent and dependent variables and controls. Feel free to submit something you found online and suggest modifications. Make sure to reference your sources. You may use your lab manual as a reference.

Under what conditions are generalization favored overspecialization and vice versa. Explain why those conditions lead to specialization or generalization. For each of the animals below, tell me the ways they are likely to avoid predation of themselves or their offspring. There can be multiple answers per species.

• Northern Elephant Seal (Mirounga angustirostris)

• Broccoli (Brassica oleracea var. Italica)

• Blue-ringed octopus (Hapalochlaena spp.)

• Killdeer (Charadrius vociferus)

Five-lined skink (Plestiodon faciatus)

Acetyl CoA carboxylase activity is regulated by hormone-controlled phosphorylation and dephosphorylation.

a)  Describe the effects of epinephrine on acetyl CoA carboxylase activity and fatty acid metabolism in the liver.

b)  Is this consistent with epinephrine’s effect on liver glycogen metabolism?                  

Without this molecule, cellular respiration does not happen, because it is the final electron acceptor. What is it?

Describe the fluid mosaic model for membranes.

5. Consider the following tetrahybrid self-cross:

Aa Bb Cc Dd    X    Aa Bb Cc Dd

Calculate the probability for each of the following offspring. Show your work.

1. Genotype Aa BB CC Dd

2. Heterozygous for ALL FOUR genes

3. Heterozygous for ANY gene

4. Dominant phenotype for ALL FOUR traits

5. GIVEN that an individual offspring has the dominant phenotype for all four traits, what is the probability that individual is heterozygous for all four genes?

6. GIVEN that an individual offspring has the recessive phenotype for all four traits, what is the probability that individual is homozygous for all four genes?

From where does folate obtain its one-carbon units, and how does it differ from 1-carbon metabolism with Vitamin B12  (what kinds of reactions are the main ones involved)? Describe.

what is the role of oxygen in aerobic metabolism?

(Please give the answer in your own words) rather using the answers already given on chegg.

At least a few sentences.

What kind of regulation is there for the synthesis of A and G nucleotides? What are the regulation targets?

Compare the regulation of the pyrimidine synthesis pathway in bacteria and mammals. What is similar, and what is different? Consider the enzymes involved, and the reactions they carry out (what happens in the reactions), as well as the kind of regulation. What is one of the enzymes “famous” for? Explain.

John has always had problems with maintaining his weight, and he is used to counting kilocalories and maintaining an active lifestyle. He has noticed that recently his diet of 2,500 kilocalories is no longer good for him. He is steadily gaining weight, and he has to go on a weight-loss diet from time to time to stay in shape. John is now 53; he is 5 feet 9 inches tall and weighs 168 pounds. He loves exercise. He bikes a 28-mile route with his cycling club on Mondays, plays volleyball on Thursdays, and runs 3 to 5 miles on other days. What is John’s EER and how many kilocalories should he consume to maintain his weight? The Harris-Benedict equation for calculation of Resting Metabolic Rate (RMR) is as follows: Adult males RMR (kcal) = 66.5 + (13.7 × weight in kilograms) + (5.0 × height in centimeters) – (6.8 × age) EER = RMR (from Harris-Benedict equation) × activity factor

Round the final number of kilocalories to the nearest whole number. During calculations, use numbers rounded to the first decimal place.