1) Which of following statements is NOT true about the chemical bonds?
A) Both kinds of the chemical bonds involve electrons in the outer shell.
B) Covalent bonds share the electrons between two atoms.
C) An atom included in an ionic bond has an unequal number of electrons and protons.
D) Water (H2O) has covalent bonds.
E) Salts and other important ionic molecules of the body are covalently bonded.
2) If neutral atoms become positive ions, they
A) gain electrons.
B) lose electrons.
C) gain protons.
D) lose protons.
E) do not change.
3) A covalent bond is
A) an example of a bond that results in ionic compounds.
B) a sharing of electrons between two atoms.
C) the transfer of electrons from one atom to another.
D) an attraction of charged atoms.
E) a sharing of protons between two atoms.
4) The lower the pH
A) the lower the hydrogen ion concentration.
B) the higher the pH number.
C) the more acidic the solution.
D) the greater the hydroxyl ion concentration.
5) Which is NOT a correct association of organic molecules?
A) Starch, glycogen, and cellulose are glucose polymers.
B) When a carbon chain has all the hydrogens it can hold, it is an unsaturated triglyceride.
C) A protein is a polymer of amino acids.
D) ATP is used for energy storage rather than cell structure.
E) DNA is a polymer of nucleotides that contains deoxyribose sugar.
6) Considering the history of microscopy, which of these organelles would have been discovered first?
A) endoplasmic reticulum
7) Which is NOT a correct association of cell organelles and function?
A) lysosome-intracellular digestion
B) cell wall-regulate molecule passage in and out of animal cells
C) ribosome-production of proteins
D) mitochondrion-cell respiration
E) vacuole-storage of chemicals
8) Which of these is best associated with plant cells?
A) cilia and flagella
B) chloroplasts and centrioles
C) chloroplasts and cell wall
D) cell membrane and small vesicles
E) brounded shape and flexibility
9) Ribosomal RNA is produced from the
D) rough endoplasmic reticulum.
E) smooth endoplasmic reticulum.
10) If a cell lacked ribosomes, it would NOT be able to
A) form a spindle apparatus.
C) synthesize proteins.
D) hydrolyze fat.
Why Work with Us
Top Quality and Well-Researched Papers
We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.
Professional and Experienced Academic Writers
We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.
Free Unlimited Revisions
If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.
Prompt Delivery and 100% Money-Back-Guarantee
All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.
Original & Confidential
We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.
24/7 Customer Support
Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.
No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.
Admission Essays & Business Writing Help
An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.
Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.
If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.