Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

1. Which of the following is an accurate statement concerning the differences between DNA and RNA?

a. RNA is usually double-stranded, but DNA is usually single-stranded.
b. RNA has the sugar deoxyribose, but DNA has the sugar ribose.
c. RNA contains three different nucleotides, but DNA contains four different nucleotides.
d. RNA lacks the base thymine (which is found in DNA) and has uracil instead.

2. The DNA sequence of a codon in a gene was changed from AAT to AAC. This type of mutation is called a(n) __________.
a. point mutation
b. insertion mutation
c. deletion mutation

3. The cells in your skin have a different shape and different function from the cells in your liver because the two types of cells have different __________.

a. DNA
b. proteins
c. lipids
d. carbohydrates

4. Genetic recombination (crossing over) produces __________.

a. new chromosomes
b. mutations
c. new combinations of alleles
d. longer chromosomes

5. Which one of the following statements is true?
a. An allele is either dominant or recessive, not in between.
b. A particular gene can have only two alleles.
c. A single trait can be affected by many different genes.
d. The environment is irrelevant to gene expression.

6. What is the root cause of sickle-cell anemia?

a. mutations in the gene that directs the synthesis of the hemoglobin protein
b. an amino acid substitution in the hemoglobin protein
c. malaria
d. abnormally shaped red blood cells

7. What are restriction enzymes?

a. enzymes that are limited (i.e., restricted) in how big they can become
b. vitamins such as vitamin A
c. plasmids
d. enzymes that cleave through a DNA helix wherever they encounter a specific sequence of nucleotides

Biology, Academics

  • Category:- Biology
  • Reference No.:- M924371

Have any Question? 


Related Questions in Biology

What is the difference between mortality and reproductive

What is the difference between mortality and reproductive rates? Do you think that they equally make an impact on population growth? If yes or no, why?

What are the primary differences between a steroidlipid

What are the primary differences between a steroid/lipid soluble hormone and a protein hormone?

Annie is a new district attorney da for her county and she

Annie is a new district attorney (DA) for her county and she has her first day in court. She walks into the courtroom and sits at the plaintiff's table. She feels pretty relaxed and is excited about her first case as a D ...

Topic genomicsquestion describe how the use of genetic

Topic: Genomics Question: Describe how the use of genetic knowledge can change the course of disease. What are the implications of the prolific use of genetic knowledge for the intervention of disease? Should there be an ...

Sickle cell anemia is a very severe conditiona explain the

Sickle cell anemia is a very severe condition. a) Explain the condition and the alleles of the person with the condition and why it is a serious problem; b) What type of chromosomal disorder causes the condition; c) If t ...

Discussion topictopic 1 invasive or alien speciesinvasive

Discussion Topic Topic #1 Invasive or Alien Species Invasive or alien species have decimated natural ecosystems and cost us untold millions of dollars in environmental damage. Define what constitutes an invasive  or alie ...

Explain the influence of lifestyles socioeconomic status

Explain the influence of lifestyles, socioeconomic status, and disease management regarding the flu.

1 define partial pressure and how it is calculated2

1. Define partial pressure and how it is calculated. 2. Compare the partial pressure at sea level and at the top of Mt. Everest. Explain why, if oxygen is still at the same concentration in both locations, the partial pr ...

Female reproductive system1 name the structureshormones

Female Reproductive System 1. Name the structures/hormones that regulate female reproductive function, and state their roles 2. Name both internal and external genitals of the female, and understand the blood supply to t ...

What is the phenotypic ratio that can be used as a

What is the phenotypic ratio that can be used as a hypothesis for a heterozygous dihybrid cross (cross of heterozygotes for two traits) if the traits follow the properties of Mendelian inheritance?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen