Biomolecules STAAR

How is information for a specific protein carried on the DNA molecule?

• As a sequence of nucleotides

• In the double-helix shape of the condensed chromosome

• In the ratio of adenine to thymine

• As a pattern of phosphates and sugars

Tags

NGSS.HS-LS1-1

A table of four types of carbohydrates is shown.

• Energy: glycogen and starch Structure: cellulose and chitin

• Energy: cellulose and chitin Structure: glycogen and starch

• Energy: chitin and glycogen Structure: cellulose and starch

• Energy: cellulose and starch Structure: chitin and glycogen

Which is NOT a function of Proteins?

• Chemical reactions of enzymes

• Short term energy

• Immune responce

• express genes

If the percentages represent water, what direction will water flow?

• Into the cell

• Out of the cell

• Into and out equally (equilibrium)

Answer explanation

In osmosis, water moves from high to low concentration.

This is a hypotonic cell, meaning the cell will expand!

Transmembrane proteins span the width of cell membranes. Four types of transmembrane proteins are shown in a section of cell membrane.

• stop chemical reactions within the cell

• synthesize molecules that signal other cells

• help the cell interact with its external environment

• remove large waste particles from the cytoplasm of the cell

Which describes the functions of proteins in living things?

• structural, transport, signaling, catalysts, etc.

• stores and transmits genetic information

• stores energy and makes up cell membranes

• quick energy and forming cell structure

Tags

NGSS.HS-LS1-1

An enzyme speeds up a reaction by

• lowering the activation energy.

• raising the activation energy.

• releasing energy.

• absorbing energy.

Tags

NGSS.HS-PS1-5

Is found in the cell membrane as a bilayer.

• carbohydrate

• protein

• lipid

• nucleic acid

How are carbohydrates and lipids related to each other? (2)

• They are both used for energy

• They are both made of amino acids

• They are both biomolecules

• They are both used to keep the body warm

The main function of a carbohydrate is

• long term energy storage

• stores genetic information

• short term energy storage

• regulates and controls all body proccesses

Tags

NGSS.MS-LS1-7