August 2022 Living Environment Regents Questions 1-10 Question Preview (ID: 59962)

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These strands are responsible for coding different proteins and are known as

a) chromosomes

b) mitochondria

c) ribosomes

d) chloroplasts

PCR, Polymerase Chain Reaction, is a method for carrying out DNA replication. In order to perform this technique, a scientist would need

a) a DNA template, ATP, and 20 different amino acid subunits

b) enzymes, several types of simple sugars, and starch molecules

c) a DNA template, enzymes, and subunits with A, G, T, and C bases

d) enzymes, specific receptor molecules, and several hormones

One role of the placenta in the development of offspring is normally to

a) produce blood cells

b) provide milk

c) produce gametes

d) transfer nutrients

A response of a normally functioning immune system that can be harmful is

a) being infected by the flu virus

b) rejecting an organ transplant

c) recognizing chemical signals

d) fighting off a bacterial infection

Which molecules are normally found in single-celled organisms?

a) organic molecules, only

b) inorganic molecules, only

c) both organic and inorganic molecules

d) neither organic nor inorganic molecules

The process that was most likely used to modify the plants’ trait and increase their natural rubber production was

a) selective breeding of two similar plant varieties

b) genetic recombination during sexual reproduction

c) genetic engineering to alter a specific gene

d) fertilizing the plants with key substances found in petroleum

Sexually reproduced offspring have traits similar to their parents because they receive

a) all of the proteins from each parent

b) some of the proteins from both parents

c) all of the genes present in both parents

d) some of the genes present in each parent

Which row in the chart below correctly pairs a group of organisms with the type of nutrition they carry out?

a) 1

b) 2

c) 3

d) 4

Which statement best describes the interactions between the structures found within a singlecelled organism?

a) They allow the organism to maintain homeostasis.

b) They prevent homeostasis from damaging the cell.

c) They must act independently of each other and prevent homeostasis.

d) They carry out the same life process in order to maintain homeostasis.

Studying fossils provides evidence for evolution because fossils

a) take a long time to form

b) can show patterns of biological change over time

c) always contain complete DNA sequences

d) found in the same area are usually closely related to each other

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