Master Biology with Fun Quizzes & Brain Teasers!

What is cancer? Explain what a doctor means when he or she says the cancer has"metastasized." (Provide examples)
1 Answer
can someone help me?
1 Answer
3. How do you make new cells?
1 Answer
If you are on the top a mountain and drop an apple, itwill fall to the ground, even though the apple isgravitationally attracted to you. Why?a)Earth is larger and has a much strongergravitational pullb) Apples always fall downC) Centrifugal forces pull the apple to the Earthand that is stronger than your gravitational pulld) None of these
1 Answer
can someone help me with this worksheet
1 Answer
Life: Scientists have found signatures of life inrocks from 3.5 billion years ago. That means lifeexisted in a world with very low oxygen! Whatis the evidence?
1 Answer
can someone help me??
2 Answers
A tree growing on a cliff is slowly growing its roots into the rocks and causing it to crack. What is this an example of? Why?(28 Points)
1 Answer
The set of human tail bones is an example of a(n)
1 Answer
Whats the complete reaction for photosynthesis
2 Answers
Which structures are not found in simple leaves?
1 Answer
You have been studying the lysosomal enzyme cathepsin D in mammalian cells. To look at the localization of the enzyme, you incorporate 32 P into the cells over a long period of time and collect fractions of the cell lysate corresponding to various organelles. Much to your surprise, you find cathepsin D was isolated in the ER fraction, and it contains 32 positive sugar side chains. However, when you pass this enzyme through an affinity chromatography column containing mannose-6-phosphate receptor conjugated to resin, the enzyme passes straight through. However, your cousin calls you up and tell you that she modified your cell line. She claims that she deleted your endogenous cathepsin D gene and transfected a plasmid containing a cathepsin D gene with a Lys-Asp-Glu-Leu (KDEL) sequence on the C-terminus.a) Why is the lysosomal enzyme found in the ER fraction rather than in the lysosomal fraction?b) Explain why the modified enzyme does not bind to the mannose-6-phosphate receptor.
1 Answer
Which structures are not found in simple leaves?
2 Answers
(BRAINLIEST QUESTION) Transcription makes mRNA copies from DNA. For this reason transcription must take place in the ____________ of the cell.CytoplasmNucleusRibosomesEndoplasmic reticulumI think it's B
2 Answers
Identify the RNA bases that would pair up with the DNA sequence TGCACT.TGCACTACGTGAUCGUGAACGUGA
1 Answer
pls someone help me with the worksheet below p.s im in grade 5 not college
1 Answer
Need 11 facts about solar eclipse
2 Answers
What molecule Contains nitrogen atoms
1 Answer
What molecule has a r group
2 Answers
Water has a neutral ph. if water was acidic or alkaline what abundance of ions are present in an acidic substance and what ions are present in an alkaline substance?
2 Answers
True or False: Enzymes always work better at higher the temperature?
2 Answers
does anyone know what this is ??
1 Answer
In a balanced ecosystem with predators and prey, if the prey population decreases then....?
2 Answers
Why is water found in different phases on different objects in our solar system?
1 Answer