Questions
How does biological diversity relate to the characteristics of the abiotic factors of an ecosystem?

How does biological diversity relate to the characteristics of the abiotic factors of an ecosystem?

In: Biology

Many people tend avoid the use sucralose when possible. Why might it be concerning that an...

Many people tend avoid the use sucralose when possible. Why might it be concerning that an artificial sugar look so much like the natural sugar? (Consider: hydrolysis is just simply the reverse reaction that is used to store glucose within glycogen)

In: Biology

List the ways that we evaluate (test methods) platelets in the lab. Just a simple list...

List the ways that we evaluate (test methods) platelets in the lab. Just a simple list at this point.

In: Biology

11. Which of the following is NOT a non-covalent bond that gives form to proteins ?...

11. Which of the following is NOT a non-covalent bond that gives form to proteins ?

(A) H-bond     (B) ionic bond (C) disulfide bridge      (D) van der Waals interactions

12. Which of the following would prevent transcription of the lactose operon?

(A) lactose       (B) allolactose (C) tryptophan             (D) glucose

13. Which of the following would prevent transcription of the tryptophan operon?

(A) lactose       (B) allolactose             (C) tryptophan             (D) glucose

In: Biology

1. Facilitated diffusion across a membrane requires_________. a. an energy input, but not a transport protein...

1. Facilitated diffusion across a membrane requires_________.

a. an energy input, but not a transport protein

b. a transport protein, but not an energy input

c. both a transport protein and an energy input

d. neither an energy input nor a transport protein

2.

Active transport across a membrane requires_________.

a. neither an energy input nor a transport protein

b. an energy input, but not a transport protein

c. both a transport protein and an energy input

d. a transport protein, but not an energy input

3.

Which one of the following statements about living organisms is an implication of the Second Law of Thermodynamics?

a. Living things can convert chemical energy into mechanical energy.

b. Living things require an energy input to keep them from breaking down.

c. Living things can convert one form of chemical energy into another form of chemical energy.

d. Living things can convert light energy into chemical energy.

4.

Both prokaryotes and eukaryotes possess all of the following structures except_____.

a. chromosomes

b. ribosomes

c. a plasma membrane

d. an endoplasmic reticulum (ER)

5.

During the process of transcription_________.

a. RNA nucleotides are base paired with DNA nucleotides

b. DNA polymerase moves along the template strand

c. a ribosome moves along an RNA strand

d. the genetic code is read

6.

A wave of action potentials travels in a single direction down a neuron's axon primarily due to the

a. closing of voltage-gated K+ channels.

b. closing of voltage-gated Na+ channels.

c. inactivation of voltage-gated Na+ channels.

d. inactivation of voltage-gated K+ channels.

In: Biology

Match the following: three nucleotide sequence Building blocks of protein Blood types Translation Genetic disease carrier...

Match the following:

three nucleotide sequence

Building blocks of protein

Blood types

Translation

Genetic disease carrier

  1. Ribosomes

  2. Heterozygous

  3. Co-dominant inheritance

  4. Codon

  5. Amino acids

In: Biology

Which of the following is true about food-borne infections? A. Requires the growth of the organism...

Which of the following is true about food-borne infections?
A. Requires the growth of the organism prior to illness.
B. Only associated with fungal-mediated contamination.
C. Symptoms typically occur shortly (within hours) after ingestion of the food
D. Both A and C.

3. Which of the following must be performed to allow for the expression of eukaryotic genes in bacterial cells?
A. Introduction of eukaryotic replication machinery into the bacteria
B. Removal of exons of the eukaryotic DNA via restriction enzymes
C. Use of reverse transcriptase to convert eukaryotic mRNA into DNA.
D. A and C

In: Biology

Why are fungi used in many bioremediation applications? How are they similar to bacteria?

Why are fungi used in many bioremediation applications? How are they similar to bacteria?

In: Biology

Outline the steps involved in the import of a protein into the mitochondria. Indicate the steps...

Outline the steps involved in the import of a protein into the mitochondria. Indicate the steps that require energy.

In: Biology

Which structures of the nephron are affected by diuretics?

Which structures of the nephron are affected by diuretics?

In: Biology

conclusion for research about advanced glycation end products and diabetes

conclusion for research about advanced glycation end products and diabetes

In: Biology

How many tablets and volume of indicated diluent (denoted by Xs below) is required to make...

How many tablets and volume of indicated diluent (denoted by Xs below) is required to make the following compounded product?

Drug Formulation: ACETAZOLAMIDE SUSPENSION 25 MG/ML

Acetazolamide 250 mg tablets X tablets needed

Ora-Sweet:Ora-Plus qsad 240 mL

X mL Ora-Sweet needed

In: Biology

Genes A and B are located 10cM from each other on a chromosome. Gene C is...

Genes A and B are located 10cM from each other on a chromosome. Gene C is located 25cM from gene A and 15cM from gene B. Assuming that I = 0, what is the probability that the trihybrid ABC/abc will produce an ABC gamete?

I get that ABC is a result of a double crossover. A similar question was answered and said that

Probability of SCO - DCO = 0.25 - 0.015 = 0.235

PLEASE EXPLAIN HOW YOU GET .25 and .015. Please do not say that it's SCO and DCO actually please explain Did they get that SCO is .25 because that's A to C, and did they say .015 because that's distance from C to B and B to A? Please I am very confused. Thanks.

In: Biology

Explain the importance of reduced glutathione to the mature red blood cell . Please include a....

Explain the importance of reduced glutathione to the mature red blood cell . Please include
a. what GSH does for the cell
b. how it does this (a)
c. what happens when one cannot make reduced glutathione.

In: Biology

Episode 1 of the documentary Emperor of all Maladies titled Magic Bullets The Emperor of all...

Episode 1 of the documentary Emperor of all Maladies titled Magic Bullets
The Emperor of all Maladies: Episode 1: Magic Bullets

6. What is a “hot knife”? Discuss the pros and cons of using the hot knife on patients?

In: Biology