🔬bio midterm (quizizz) 2020🔬

why does ice float?

As water freezes, it expands and its density decreases.

proteins are made of...

CHON

Which best explains why an enzyme is able to catalyze a synthesis reaction?

Enzymes lower the activation energy of metabolic reactions in the body.

How can excessive heat affect the function of enzymes?

Heat can cause enzymes to become denatured

What is not needed for photosynthesis to occur?

Oxygen

Which statement about photosynthesis is correct?

Plants get the energy they need for photosynthesis from sunlight.

After being used in a chemical reaction, enzymes...

The same enzyme can be used many times for the same kind of chemical reactions.

The sodium concentration inside a cell is higher than that outside of the cell. How could more sodium enter the cell?

active transport

What word describes when water is attracted to other substances?

adhesion

Which of the following go through the process of photosynthesis?

algae

Which statement would not be included in a summary of the cell theory?

all cells contain a nucleus

Proteins are made of monomers called ___________

amino acids

Which statement correctly describes how a protein is formed?

amino acids are bonded together in a long chain to form a new molecule

Mr. McNiece wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. What constant should be considered when doing this experiment?

amount of time the music is played

why is it important to enzymes for cells to maintain homeostasis?

because the enzymes function best under specific conditions

Why does water move from the roots to the leaves of plants?

capillary action pulls the water molecules like a chain

Monosaccharides are monomers of

carbohydrates

Which macromolecule is made of simple and complex sugars?

carbohydrates

The element _______is found in all of the organic compounds.

carbon

Plants need ________ for photosynthesis

carbon dioxide

what organelle in a cell is responsible for maintaining cellular homeostasis?

cell membrane

The attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water's ability to be attraction to other water molecules.

cohesion

What do all living things need?

energy

Which transport mechanisms require the formation of a vesicle to transport material into or out of a cell? B. C. D.

exocytosis and endocytosis

what are 3 examples of lipids?

fats, oils, waxes

What are the products of photosynthesis?

glucose and oxygen

Which two types of polysaccharides differ within animals and plants?

glycogen,cellulose

What two elements make up water?

hydrogen and oxygen

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

independent

Glycerol and fatty acids are the monomers of

lipids

Waxes, oils and fats are examples of

lipids

Which macromolecule stores energy, insulates us, and makes up the cell membrane?

lipids

Bears stores _______during the winter. This Organic molecule provides long term energy

lipids (fat)

what structure is only found in eukaryotes?

nucleus

In a controlled experiment, how many variables can be worked with at a time?

one

A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being collected is probably ________.

oxygen

The Golgi apparatus is broken down during mitosis and then reformed. Which function would a cell be unable to perform during the time that its Golgi apparatus is broken down?

processing and packaging proteins for cellular export

What type of macromolecule are enzymes?

protein

The organic compounds that have many structural purposes and are used in many processes during within the cells are called

proteins

in order for fruits and vegetables to appear fresh it is important they appear plump. Which is the best way to keep fruits and vegetables plump?

regularly mist them with water

Which organelle and its function are correctly matched?

ribosome- assembles proteins

what determines the function of an enzyme?

shape

What property of water helps to moderate earth's temperature?

specific heat capacity

What part of an enzyme determines the substrate on which the enzyme will work?

the active site

Every day at lunch, Belle swims laps in the pool for one hour. The number of laps she is able to swim in the hour depends on the speed at which she swims.l = the number of laps Belle is able to swim in one hours = the speed at which Belle swims. Which of the variables is dependent?

the number of laps Belle is able to swim in one hour is the dependent variable

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

the type of liquid

Large bodies of water do not quickly fluctuate in temperature. Why?

water has a high heat capacity