First Quarter Exam Flashcards
What type of RNA has anticodons?
tRNA
A scientific idea that has not been tested is a _____.
Hypothesis
The doctrine of humors believes that humans contain 4 different _____.
Liquid/fluids
What do we call the process by which bacteria obtain energy from inorganic chemicals?
Chemosynthesis
Atom having a negative or positive charge?
Ion
A solution that has a greater concentration than water molecules in a cell is called what?
Hypophilic
The principle product of photosynthesis is _____.
Glucose
The entire process of photosynthesis takes place in the _____.
Chloroplast
The reaction that causes bread to rise is an example of _____.
Alcohol fermentation
What is the control center of most cell activity?
The nucleus
Robert Brown was first to describe ____.
Nucleus
The increase in randomness and loss of usable energy in nature is known as _____.
Entropy
What kind of chemical bond shares chemical bond?
Covalent
What is the name of the numerical index used to express the acidity or alkalinity of a substance?
The PH scale
The use the cellular energy to change the permeability of a membrane is called _____.
Active transport
What suggests looking for items in nature that represent a person’s problem?
The doctrine of signatures
What’s another name for the land/eyepiece on a microscope?
Ocular
What is the messenger RNA (mRNA) carry?
Amino acid
What kind of transport requires the cell to expand energy in order for the substances to pass through the membrane?
Active transport
What is the movement of substances through a cell membrane without the cell’s expending energy?
Passive transport
The bursting of blood cells in hypotonic solution is called_______.
cytolosis
True or False
Active Transport involves the cell’s expending energy to digest a substance it has taken in.
False
True or False
Some multicellular organisms are colonial.
True
True or False
Cells are held together by various kinds of cell junctions.
True
True or False
Organelles are found only in prokaryotic cells.
False
True or False
The cell wall is sometimes described as a lipid bilayer.
False
True or False
The inner folds of ribosomes are called cristae.
False
Robert Brown was the first to describe this structure and it’s importance in cells.
nucleus
Cork “cells” were first identified by_____.
Hooke
Organisms made up of cells that can operate independently but that normally tend to group together are called______.
colonial
Several tissues grouped together and working as a unit form_______.
an organ
The cytoplasm’s long tubular extensions that contain a set of microtubules and that are used in cellular movement are________.
flagella
The process by which cells release wastes or secrete substances through the plasma membrane is known as_______.
exocytosis
Which of the following are not found in animal cells?
plastids
Chloroplasts contain
grana
Which of these is associated with digestion in the cell?
Lysosmomes
True or False
Some multicellular organisms have tissues that are grouped into organs which are arranged in systems.
True
True or False
Rough endoplasmic reticulum has ribosomes attached to it whereas smooth endoplasmic reticulum does not.
True
True or False
Golgi bodies often process materials the cell is secreting.
True
True or False
Turgor pressure involves a built-up of the quantity of water molecules in the contractile vacuole.
False
True or False
In eukaryotic cells the nucleus is surrounded by a double membrane called the nuclear envelope.
True
True or False
In passive mediated transport a substance is helped across a membrane by a structure in the passive membrane.
True
A eukaryotic cell does not have…
A nuclear area that is not enclosed in a membrane
The organelles found in most plant cells (but never in animal cells) are…
Plastids
Organelles are sometimes moved throughout the cell by a process called…
Cytoplasmic streaming
A prokaryotic cell does not have…
Membrane-bound organelles
The cell theory states that all cells come from preexisting cells, that cells are living things, and that…
All the functions of living organisms are carried on by cells
Elimination of nonsoluble, nondigested particles by a cell is referred to as…
Egestion
The ability of a cell to respond to its environment is called…
Irritability
Who discovered that all plants are made of cells?
Schleiden
What has to do with a plant cell’s turgor pressure?
Central vacuole
The diffusion of water into a cell by osmosis results in a build-up of…
Turgor pressure
Contractile vacuoles would be of great importance to a unicellular…
Animal living in a hypotonic environment
The control center of most cell activity is the…
Nucleus
A solution that has a greater concentration of water molecules than the cell it (this part was cut off in the picture)…
Hypotonic
Since diffusion is a purely physical process (it requires no cellular energy), it (this part was cut off in the picture)…
Passive transport
He use of cellular energy to changers permeability of the membranes a called…
Active transport
What is not associated with the nucleus of a cell?
Ribosome
True or False
In passive mediated transport a substance is helped across a membrane against the concentration gradient.
False
