End of Year Biology

This organic molecule is the main component of biological membranes.....

• carbohydrates

• lipids 

• proteins 

• nucleic acids

A mite lives in the base of the eyelashes of people who use mascara. It feeds on the mascara; it does not seem to harm people. What type of symbiotic relationship is this?

• mutualism

• commensalism

• parasitism

• predation

True or False: Lipids are insoluble

• True

• False

True or False: The main function of a lipid is to store energy.

• True

• False

Which molecules are joined together to make proteins?

• fatty acids

• nucleic acids

• amino acids

• acetic acids

Tags

NGSS.MS-LS3-1

Leaves are part of a plant’s shoot system. The xylem tissue in leaves transports —

• the bacteria needed for nitrogen fixation in root nodules

• the wax required to coat the surface of actively growing tissue

•  the water and minerals that are absorbed by the roots

• the oxygen that regulates the rate of carbohydrate production

What do both prokaryotic and eukaryotic cells contain?

• membrane-bound organelles

• linear chromosomes

• cytoplasm

• a nucleus

The organelle that organizes cell division:

• Nucleus

• Centrioles

• Cytoskeleton

• Ribosome

If a body cell has 26 chromosomes, when it have finished mitosis and cytokinesis, it will have ___ chromosomes.

• 13

• 26

• 52

• 24

Which condition represents homeostasis?

• Having a stroke

• Shivering on a cold day

• Breaking a bone