A genetic mutation

A genetic mutation occurs that changes a cysteine residue in the alpha-keratin protein into a methionine. The resulting mutant keratin will be more stable that the original, wild-type keratin. True or False?

Which statement is NOT true about prokaryotes?

Which statement is NOT true about prokaryotes?
A.) Prokaryotes vary widely in shapes and sizes
B.) Prokaryotes store their genetic information in a nucleus
C.) Prokaryotes use DNA to store their genetic information
D.) Prokaryotes are usually single-called but can be multicellular

Maintaining healthy pregnancy

Jennifer is a 25 year old woman who has just found out she is pregnant. Maintaining healthy pregnancy is necessary. Her doctor has estimated that she is about 8 weeks along. Jennifer is 5’5″ tall, and her pre-pregnancy weight was 170 lbs. Jennifer has a busy schedule and rarely gets a chance to shop for groceries, so she eats out quite a bit. Prior to becoming pregnant, she had attempted to adopt a healthy diet and has started to incorporate more fruits and vegetables into her diet. Her major downfall is that she does not always remember to eat breakfast. She has been experiencing a significant amount of morning sickness, and has discovered the peanut butter and jelly sandwiches on white bread are one of the only food items that do not make her feel ill, so she has been eating them for lunch almost daily. Jennifer is also not very active. Prior to her pregnancy, she would get less than 30 minutes of activity per day. Considering the information above, please answer the following questions, using information from your module to support your thoughts.

1. What is Jennifer’s pre-pregnancy body mass index  (use the formula from the text)? Based on her body mass index, what is the recommended amount of weight gain for her pregnancy?

2. Given her current diet, what nutrients of concern for pregnancy may be missing that are important for a healthy pregnancy? Be sure to include an explanation as to WHY these nutrients are needed to support a healthy pregnancy.

3. How might you recommend she add the nutrients you listed in question 2? Please be specific in your answer by including food and meal suggestions.

4. What are two other concerns you have about Jennifer’s current diet plan? Please explain why these are of concern as it relates to a healthy pregnancy diet.

5. Please share two additional ideas/tips you can provide to Jennifer for improving her current diet to ensure a healthy pregnancy and healthy fetal development?

The orders of Gammaproteobacteria

Make a dichotomous key to distinguish among the orders of Gammaproteobacteria

The use of a dilution factor

Which of the following correctly describes the use of a dilution factor of 0.01 for dilution of a bacteria culture?

What is the trait all lipids share?

What is the trait all lipids share? (72) Why are fatty acids considered nonpolar? (72) Why can saturated fatty acids pack tightly together forming solid fats? (73) Why do unsaturated fatty acids form liquid oils instead of solids?

The fatty acid tails of phospholipids

​Which of these amino acids would interact with the fatty acid tails of phospholipids found in the middle of membranes? What amino acids would interact with the heads of phospholipids found on the surface of membranes?

X-linked recessive inheritance

There are five common features characterizing X-linked recessive inheritance, such as red-green color blindness. Which of the following statements about inheritance patterns of X-linked recessive traits in humans is FALSE? O Often, the transmission of the recessive allele from grandfather to daughter to grandson gives the appearance of generation skipping Matings of recessive males (cY) and carrier females (Cc) can not produce the recessive phenotype in females. o If a recessive male (cY) mates with a homozygous dominant female (CC), all progeny have the dominant phenotype. All female offspring are heterozygous carriers (Cc), and all male offspring are hemizygous for the dominant allele (CY). As a result of male hemizygosity, more males than females have the recessive phenotype

Photosynthesis

Chloroplasts are found only in eukaryotic cells that carry out photosynthesis: plants and alg and algae appear green as a res chloroplast?

(a)in the first, outer membrane

(b)in the space between the first and second membranes

(c)in the second, inner membrane

(d in the third, innermost membrane ae. Plants ult of the presence of chlorophyll. Where is chlorophyll located in the energy from sunlight. In this essential process, plants Photosynthesis enables plants to capture the incorporate the carbon from CO2 into high-energy 1-22 molecules, which the plant cell mitochondria use to produce ATP

(a)fat

(b)sugar

(c)protein

(d)fiber

What are adaptations?

What are adaptations? What adaptations do you think will occur to the animals on the island?