The Study of Life
Which of these is a testable explanation of a situation that may not true?
hypothesis
independent variable
data set
experiment
What is a hypothesis?
This major macromolecule is responsible for the storage and transmission of genetic information
What are nucleic acids?
Prokaryotes have NO _______.
What is a nucleus?
____ is a type of membrane transport involves aquaporins
What is facilitated diffusion?
the study of life; examines how living things interact, how systems function, and how they function at a molecular level.
What is Biology?
Which of the following correctly sequences the steps of the scientific method?
question, observe, explain, design and conduct experiment, collect and analyze data, report findings
observe, question, make a testable explanation, experiment, collect and analyze data, state findings
form a hypothesis, observe, investigate a testable question, collect and analyze data, state results
design and conduct an investigation based on a testable question, form a hypothesis, collect data, state findings
What is (2) observe, question, make a testable explanation, experiment, collect and analyze data, state findings?
Scientists are most likely to be searching for ______ on other planets if they were looking for signs of life.
What is carbon?
Ribosomes are small structures found in ALL cells. They are responsible for manufacturing ________.
What are proteins?
When a cell is in a hypotonic solution, it will ______.
What is swell/ enlarge/ bloat/ take IN water?
a controlled investigation to test a hypothesis
What is an experiment?
The system of measurement used by scientists
What is the International System of Units (SI)? (or metric system)
Carbon is a great building block for living things because it has _______.
This cell organelle contains coded directions for production of proteins
What is the nucleus?
Some types of membrane transport require ATP because _______.
What is Cells must use energy when moving substances AGAINST the concentration gradient?
LARGE molecule formed by joining smaller organic molecules together
What is a macromolecule?
Which activity is an example of the human body striving to maintain homeostasis?
creating thoughts to solve a difficult problem
digesting foods to reduce their particle size
producing sweat to reduce body temperature
sprinting across a street to avoid oncoming traffic
What is (3) producing sweat to reduce body temperature?
Which of the following compounds is an example of a lipid?
A. starch
B. DNA
C. triglyceride
D. catalase
What is (C) triglyceride?
Emma is observing a cell under the microscope in biology class. She makes a sketch of her observations, and notes that the cell has a nucleus and also contains smaller membrane-bound organelles. What can Emma infer about the cell she observes?
It is a prokaryote.
It is a heterotroph.
It is a eukaryote.
It is an autotroph.
What is (3) it is a eukaryote?
Which of the following substances would require a type of bulk transport to move across a cell’s plasma membrane?
polar ions following the concentration gradient
a large protein that a cell needs to expel
water moving in and out of a cell
solutes being actively pumped into a cell
What is (2) a large protein that a cell needs to expel?
the condition of continuous, random movement of particles but no overall change in concentration of materials
What is dynamic equilibrium?
Students getting onto the bus in the morning are complaining that the bus is way too cold!
As a result, some students have “goosebumps” on their arms, and they start to shiver! Many students are wishing that they had dressed in warmer clothes.
The STIMULUS in this scenario is ______.
What is cold weather?
Pasta, mashed potatoes, and rice are foods which come from grains, and, therefore, full of starch molecules. Which of the following molecules would you expect to be provided by a meal with lots of these starchy foods?
nucleotides
proteins
amino acids
glucose
What is (4) glucose?
Cells with a main function of clean-up and break-down of waste, foreign particles, bacteria, and old cell parts are likely to have an abundance of which cellular structure?
ribosomes
endoplasmic Reticulum
vacuoles
lysosomes
What are (4) lysosomes?
How is the plasma membrane of a cell organized? (describe its structure)
What is two layers of phospholipids, with their polar hydrophilic heads facing away from each other?
the property (ability) of the plasma membrane that allows it to control movement of substances into or out of the cell to maintain conditions suitable for life.
What is selective permeability?