Keystone Homework #4

Keystone Homework #4

9th - 12th Grade

6 Qs

quiz-placeholder

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Keystone Homework #4

Keystone Homework #4

Assessment

Quiz

Science

9th - 12th Grade

Practice Problem

Hard

Created by

Joanne Mcgrath

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6 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A teacher demonstrated protein formation to a science class . The model shows three steps the teacher used in the demonstration . How can the steps in the model best be described?

In Step 1, amino acid monomers are present . In Step 2, the monomers are attached together to form a protein polymer . In Step 3, more amino acid monomers are added to the chain, making a larger protein .

In Step 1, nucleotide monomers are present . In Step 2, the monomers are attached together to form a protein polymer . In Step 3, more nucleotide monomers are added to the chain, making a larger prot

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement best describes how amino acids become polymers?

Water is added as amino acids link to form proteins .

Water is released as amino acids break apart to form proteins .

Peptide bonds link amino acids together as proteins form .

Peptide bonds break between amino acids as proteins form

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which biological molecules are most likely represented by molecules 1 and 2?

molecule 1: lipid molecule 2: nucleic acid

nucleic acid B . molecule 1: lipid molecule 2: protein

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

. Which property of water is most responsible for plants being able to transport water from their roots to their leaves?

the attraction between molecules

a capacity to dissolve many substances

the ability to form a low-density crystalline structure when frozen

a capacity to absorb large amounts of energy as temperature increases

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cells are largely made of organic compounds that contain carbon. Which property of the carbon atom makes it an essential component of organic compounds?

Carbon is a nonmetal.

Carbon oxidizes to carbon dioxide.

Carbon is solid at room temperature.

Carbon can form four covalent bonds.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which two students correctly described organic compounds?

students 1 and 2

students 2 and 3

students 3 and 4

students 2 and 4

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