click below
click below
Normal Size Small Size show me how
LE Regents midterm 2
NYS Regents - Living Environment
Question | Answer |
---|---|
If cells are exposed to radiation, what can happen | cancer, mutations, death |
Describe a gene | a band or segment of DNA found on a chromosome that contains the instructions for producing 1 trait |
How many variables can a scientist test in an experiment? | 1 variable |
If we put a plant in the sunlight and then in a closet with no light, will the DNA a) mutate, b) turn on different genes, or c) replicate and produce more DNA | Turn on different gene expressions but the DNA stays the same. (Does not mutate) |
Meat is a form of _______. | protein |
Protein is made up of ________ _________. | amino acids |
An enzyme's function is determined by ________ and the sequence of ____________. | shape, bases |
Fat has more energy due to more _____________ ________. | chemical bonds |
What are examples of organic molecules? | protein, fat, carbohydrate, sugar, fat, starch |
What are examples of inorganic molecules | water, oxygen, carbon dioxide |
Starch is made up of __________ _____________. | simple sugars |
Enzymes function best at a specific _______ or ___________________. | ph, temperature |
What process breaks a larger molecule down into smaller pieces? | hydrolysis |
What process takes smaller molecules and synthesizes them into a new and larger molecule? | dehydration synthesis |
What organelle contains the genetic information inside a cell? | nucleus |
What organelle produces proteins? | ribosomes |
What organelle converts glucose into ATP? | mitochonria |
Cells try to maintain _______________ by balancing the amount of water in the cell and outside the cell. | equilibrium |
To pass a mutation onto its offspring, the mutation must be in the a) heart cell, b) skin cell, c) gamete (sperm or egg) | gamete |
In DNA, what does cytosine pair with? | guanine |
In DNA, what does adenine pair with? | thymine |
In genetic engineering, what is used to splice a human gene into a bacterial DNA? | enzymes |
When you cross one tomato plant with another tomato plant to make a new tomato offspring, this is called ________ ____________. | selective breeding |
An enzyme's shape determines it's _______ | function |
What cell organelles do plants have a) chloroplasts, b) mitochondria, c) both chloroplasts and mitochondria | chloroplasts and mitochondria |
In cloning the original organism's DNA and the offspring DNA are the identical - TRUE or FALSE | True |
What cell activity can occur without using energy? | the movement of water across the cell membrane |