Which of the following is NOT true of the endomembrane system?

Which of the following is NOT true of the endomembrane system? A - Completely closed space with no openings B - Releases contents in vesicles C -...

What is another term for the intracellular space?

What is another term for the intracellular space? A - Cytoplasm B - Hydrophobic region C - Bilayer D - Phospholipids E - Cholesterol Answer: A...

Which of the following does NOT take place in the nucleus?

Which of the following does NOT take place in the nucleus? A - Ribosome synthesis B - All of these take place in the nucleus C - Transcription D...

What type of cell might have more smooth ER?

What type of cell might have more smooth ER? A - Nerve B - Heart C - Liver D - Skin Answer:  NOT AVAILABL...

What are ribosomes comprised of?

What are ribosomes comprised of? A - tRNA and protein B - mRNA and tRNA C - mRNA and protein D - rRNA and mRNA E - rRNA and protein Answer: E...

Which of the following first binds to the mRNA message?

Which of the following first binds to the mRNA message? A - Cytoplasm B - Rough endoplasmic reticulum C - Large subunit D - Small subunit E - P site Answer: D...

Where are the A, P, and E sites located?

Where are the A, P, and E sites located? A - Small subunit B - rRNA C - Cytoplasm D - Rough endoplasmic reticulum E - Large subunit Answer: E...

Which ribosomal site joins amino acids via a polypeptide bond?

Which ribosomal site joins amino acids via a polypeptide bond? A - E site B - R site C - P site D - A site Answer: C - P site ...

Where can you NOT find ribosomes preforming translation?

Where can you NOT find ribosomes preforming translation? A - Smooth endoplasmic reticulum B - Cytoplasm C - Mitochondria D - Chloroplasts Answer: A...

Where is the starting point of ribosome synthesis?

Where is the starting point of ribosome synthesis? A - Nuclear pore B - Nuclear envelope C - Nucleolus D - Nuclear localization signal E - Nuclear...

Which of the following helps maintain the shape of the nucleus?

Which of the following helps maintain the shape of the nucleus? A - Nuclear localization signal B - Nuclear pore C - Nuclear envelope D - Nuclear...

Which process best describes the internalization of a specific protein outside the cell?

Which process best describes the internalization of a specific protein outside the cell? A - Lysosome B - Phagocytosis C - Exocytosis D - Pinocytosis E...

How do large proteins enter the cell?

How do large proteins enter the cell? A - With a nuclear localization signal B - By stretching the nuclear pore C - All of these D - With chemical...

The ________ is a double membrane that shields the nucleus.

The ________ is a double membrane that shields the nucleus. A - DNA B - Nuclear envelope C - Chromatin D - Nucleolus Answer: B - Nuclear ...

Exocytosis can be used to secrete newly made proteins out of the cell. It can also be used to add _____ directly to the cell membrane.

Exocytosis can be used to secrete newly made proteins out of the cell. It can also be used to add _____ directly to the cell membrane. A - Solutes B...

A foreign cell has entered your blood stream. Which process describes how it can be engulfed by one of the cells in your immune system?

A foreign cell has entered your blood stream. Which process describes how it can be engulfed by one of the cells in your immune system? A - Pinocytosis B...

Active transport involves

Active transport involves A - Simple diffusion B - Chemical energy C - The movement of water D - Movement with a concentration gradient E - Sodium...

Which process best describes non-specific internalization of dissolved ions outside the cell?

Which process best describes non-specific internalization of dissolved ions outside the cell? A - Lysosome B - Receptor-mediated endocytosis C -...

Which of the following is true of the lysosome?

Which of the following is true of the lysosome? A - It pumps protons into the extracellular space B - It builds internal cellular structures and...

A sodium potassium pump is a type of

A sodium potassium pump is a type of A - Passive transport B - Triport C - Antiport D - Symport E - Uniport Answer: C - Antipo...

This type of integral membrane protein moves two substances in the same direction.

This type of integral membrane protein moves two substances in the same direction. A - Carrier B - Triport C - Uniport D - Symport E - Antiport Answer: D...

What type of integral protein helps molecules move across the cell membrane by binding and releasing them?

What type of integral protein helps molecules move across the cell membrane by binding and releasing them? A - Hydrophobic B - Channel C - Pore D...

Chemical energy is required for active transport to establish a specific concentration gradient. In a sodium potassium pump, chemical energy specifically serves to help the pump

Chemical energy is required for active transport to establish a specific concentration gradient. In a sodium potassium pump, chemical energy specifically...

Why does active transport require energy?

Why does active transport require energy? A - To move solutes with a concentration gradient B - To transport small, hydrophobic molecules across...

What type of transport uses membrane proteins to passively move solutes?

What type of transport uses membrane proteins to passively move solutes? A - Facilitated diffusion B - Simple diffusion C - Active transport D -...

Diffusion of small non-polar molecules across the cell membrane along a concentration gradient is

Diffusion of small non-polar molecules across the cell membrane along a concentration gradient is A - Channel B - Simple C - Osmosis D - Facilitated E...

The inside of a cell contains more solutes than the outside of the cell. Which describes the inside of the cell and the direction of water?

The inside of a cell contains more solutes than the outside of the cell. Which describes the inside of the cell and the direction of water? A - Inside...

Which types of molecules will easily pass through the fatty acid chains of the bilayer?

Which types of molecules will easily pass through the fatty acid chains of the bilayer? A - Polar B - Hydrophobic C - Ions D - Hydrophilic Answer: B...

What part of the a phospholipid is hydrophobic?

What part of the a phospholipid is hydrophobic? A - The extracellular region B - Phosphate group C - The intracellular region D - Fatty acid chain Answer: D...

Carbohydrates in the cell membrane contribute to

Carbohydrates in the cell membrane contribute to A - Cell to cell adhesion B - Structure C - Protection D - Fluidity Answer: CARBOHYDRATE...

What is the purpose of cholesterol in the cell membrane?

What is the purpose of cholesterol in the cell membrane? A - To help maintain fluidity B - To help cells stick together C - To make the bilayer hydrophobic D...

Which of the following is involved in cell communication?

Which of the following is involved in cell communication? A - Cholesterol B - Integral proteins C - Phospholipids D - Carbohydrates E - Cytoplasm Answer: B...

The Fluid Mosaic Model describes proteins

The Fluid Mosaic Model describes proteins A - Tethered to one place in the membrane B - Bound to carbohydrates C - Floating laterally throughout...

Which of the following is NOT true of the phosphate group in a phospholipid? The phosphate group is

Which of the following is NOT true of the phosphate group in a phospholipid? The phosphate group is A - Attached to fatty acids via a glycerol group B...

What is the fundamental unit of life?

What is the fundamental unit of life? A - Water B - Phospholipids C - Fatty Acids D - Cells Answer: D - Cells ...

What language does the word 'hydro' come from?

What language does the word 'hydro' come from? A - Russian B - Greek C - Persian D - Latin Answer: B - Gre...

How is the phospholipid bilayer oriented?

How is the phospholipid bilayer oriented? A - One layer of phospholipids forms a circle B - Head and tails alternate directions within a layer C...

Nitrogen is part of what vital substance in plant cells?

Nitrogen is part of what vital substance in plant cells? A - Nectar B - Chlorophyll C - Glucose D -Cellulose E - Water Answer: B - Chlorophyll The...

What term describes the process of converting atmospheric nitrogen to ammonia?

What term describes the process of converting atmospheric nitrogen to ammonia? A - Denitrification B - Nitrogen fixation C - Ammonification D -Nitrification E...

The relationship between nitrogen-fixing bacteria and legumes can best be described as

The relationship between nitrogen-fixing bacteria and legumes can best be described as A - Commensalism B - Parasitism C - Amensalism D -Symbiosis E...

The earth's atmosphere is made up of several components including carbon, oxygen, and nitrogen. About how much of the atmosphere is nitrogen?

The earth's atmosphere is made up of several components including carbon, oxygen, and nitrogen. About how much of the atmosphere is nitrogen? A -...

Organisms that fix atmospheric nitrogen into a suitable form for plants and humans are

Organisms that fix atmospheric nitrogen into a suitable form for plants and humans are A - Legumes B - Worms C - Grubs D -Insects E - Bacteria Answer: E...

Some flowers, such as daffodils and pansies, are often yellow in color. Which of the following is most likely method of pollination?

Some flowers, such as daffodils and pansies, are often yellow in color. Which of the following is most likely method of pollination? A - Bees B -...

A certain plant develops incomplete flowers that do not have a scent. Which of the following is the most likely method of pollination?

A certain plant develops incomplete flowers that do not have a scent. Which of the following is the most likely method of pollination? A - Wind B...

Which of the following terms best describes when a grain of pollen from an anther is placed on a stigma?

Which of the following terms best describes when a grain of pollen from an anther is placed on a stigma? A - Elongation B - Fixation C - Pollination D...

Occasionally, there is a strange illness that kills bees. What is a likely side effect of this disease on plants?

Occasionally, there is a strange illness that kills bees. What is a likely side effect of this disease on plants? A - They will develop more ripe...

What is the purpose of a pollen tube?

What is the purpose of a pollen tube? A - To allow pollen to produce nectar B - To attract pollinators such as bees and birds C - To allow pollen...

Why is the stigma generally sticky?

Why is the stigma generally sticky? A - To produce pollen B - To attract pollinators C - To protect the style D -To develop into seeds E - To capture...

What whorl in a flower contains the petals and attracts pollinators?

What whorl in a flower contains the petals and attracts pollinators? A - Calyx B - Stigma C - Anther D -Corolla E - Style Answer: D -Corolla The...

Some plants, such as elm trees, lack one or more whorls of a flower. What term best describes these flowers?

Some plants, such as elm trees, lack one or more whorls of a flower. What term best describes these flowers? A - Incomplete B - Complete C - Hermaphroditic D...

Which whorl of a flower contains anthers and filaments?

Which whorl of a flower contains anthers and filaments?  A - Stamen B - Stigma C - Gynoecium D - Calyx E - Androecium Answer: E - Androecium The...

Which of the following structures is not found in the gynoecium whorl?

Which of the following structures is not found in the gynoecium whorl? A - Ovary B - Stigma C - Sepals D -Style E - Carpel Answer: C - Sepals The...

What structure associated with phloem carries out metabolic activities for the phloem?

What structure associated with phloem carries out metabolic activities for the phloem? A - Companion cells B - Sieve plates C - Sieve cells D -Sieve...

Which of the following is NOT an example of a sugar sink?

Which of the following is NOT an example of a sugar sink? A - Storage roots B - Photosynthetic layer in leaves C - Developing buds D -Lengthening...

The pressure flow hypothesis can be used to explain

The pressure flow hypothesis can be used to explain A - The movement of sugars from sinks to sources B - The movement of water from sinks to sources C...

Which of the following is the best example of a sugar source?

Which of the following is the best example of a sugar source? A - Growing stem B - Storage root C - Mesophyll layer of leaves D -Stomata in leaves E...

Insects often eat leaves and other plant structures in order to obtain nutrients such as sugar. Which location in a plant will most likely provide sugars for the insect because it is a part of the phloem?

Insects often eat leaves and other plant structures in order to obtain nutrients such as sugar. Which location in a plant will most likely provide sugars...

The attraction of water molecules to other water molecules is best described as

The attraction of water molecules to other water molecules is best described as A - Ionic bond B - Adhesion C - Transpiration D -Cohesion E - Covalent...

Xylem is composed of dead cells lined end to end. What is responsible for making these cells strong and durable even though they are no longer living?

Xylem is composed of dead cells lined end to end. What is responsible for making these cells strong and durable even though they are no longer living? A...

What two factors are mainly responsible for the movement of water from the roots up through the leaves?

What two factors are mainly responsible for the movement of water from the roots up through the leaves? A - Transpiration and gravity B - Transpiration...

The release of water in plants, causing the change in water potential allowing the movement of water in the xylem, is best known as

The release of water in plants, causing the change in water potential allowing the movement of water in the xylem, is best known as A - Cohesion B...

The individual units of xylem that have tapered ends are called

The individual units of xylem that have tapered ends are called A - Sieve elements B - Tracheids C - Vessels D -Sieve plates E - Phloem Answer: B...

Lateral roots help to increase the absorption of water and mineral. What structure must they remain connected to in order to ensure these materials are transported to the rest of the plant?

Lateral roots help to increase the absorption of water and mineral. What structure must they remain connected to in order to ensure these materials...

Which of the following correctly matches the root region with the process that occurs there?

Which of the following correctly matches the root region with the process that occurs there? A - Elongation - cell creation B - Meristem - cell division C...

Where does the development of lateral roots begin?

Where does the development of lateral roots begin? A - Epidermis B - Pericycle C - Meristem D - Root cap E - Cortex Answer: B - Pericycle LATERAL...

Which of the following correctly pairs the cell produced in the meristem region with its final mature structure?

Which of the following correctly pairs the cell produced in the meristem region with its final mature structure? A - Procambium - Epidermis B - Protoderm...

In roots, where will new growth occur?

In roots, where will new growth occur? A - Epidermis B - Cortex C - Meristem D - Mesodermis E - Endodermis Answer: C - Merist...

What is the purpose of root hairs?

What is the purpose of root hairs? A - To protect the growing root B - To prevent water from entering or exiting the root C - To allow for better...

Some roots are designed to store large amounts of sugars. In what part of the root are you more likely to find this sugar reserve?

Some roots are designed to store large amounts of sugars. In what part of the root are you more likely to find this sugar reserve? A - Root meristem B...

Which of the following is the best analogy for the function of the root tip?

Which of the following is the best analogy for the function of the root tip? A - Highway B - Water tower C - Instruction manual D -School E - Hard...

When you peel a carrot or potato, what layer of the root are you removing?

When you peel a carrot or potato, what layer of the root are you removing? A - Endodermis B - Epidermis C - Vascular cylinder D -Mesodermis E - Cortex Answer: B...

The veins in a leaf contain tissue that is also known as

The veins in a leaf contain tissue that is also known as A - The vascular bundle B - The stomata C - The mesophyll D - The cuticle Answer: A...

What layer of leaf is responsible for photosynthesis?

What layer of leaf is responsible for photosynthesis? A - Cuticle B - Palisade layer C - Stomata D - Spongy layer Answer: B - Palisade layer The...

When the weather is very hot, what will happen to the stomata?

When the weather is very hot, what will happen to the stomata? A - They will be closed to allow for water loss B - They will be closed to prevent...

Which of the following best describes the process of trees releasing water vapor?

Which of the following best describes the process of trees releasing water vapor? A - Condensation B - Photosynthesis C - Respiration D - Transpiration Answer: D...

When viewing a tree trunk, one observes that the rings very in size. What causes some of these rings to be larger than others?

When viewing a tree trunk, one observes that the rings very in size. What causes some of these rings to be larger than others? A - There is less...

The type of growth seen at the apical meristem is best known as ______ growth and will result in an increase in the ______ of the stem.

The type of growth seen at the apical meristem is best known as ______ growth and will result in an increase in the ______ of the stem. A - Secondary,...

What type of cell can produce more tissue to transport water in a tree?

What type of cell can produce more tissue to transport water in a tree? A - Cork cambium B - Epidermis C - Vascular cambium D - Apical meristem Answer: C...

As woody plants increase in height, they need to add more vascular tissue to transport water and nutrients further. Where does this secondary growth occur?

As woody plants increase in height, they need to add more vascular tissue to transport water and nutrients further. Where does this secondary growth...

What type of tissue prevents the loss of water from the plant stem following secondary growth?

What type of tissue prevents the loss of water from the plant stem following secondary growth? A - Phloem B - Xylem C - Epidermis D - Cork Answer: D...

Why does secondary growth occur in dicots and not in monocots?

Why does secondary growth occur in dicots and not in monocots? A - Dicots do not have primary growth so they must have secondary growth B - The organization...

Leaves attach to stems at ______ and the spaces between leaves are called ______.

Leaves attach to stems at ______ and the spaces between leaves are called ______. A - Buds, internodes B - Buds, terminal buds C - Nodes, internodes D...

Which process happens at the apical meristem to allow for plant stem growth that does not occur at other locations in the shoot system?

Which process happens at the apical meristem to allow for plant stem growth that does not occur at other locations in the shoot system? A - Photosynthesis B...

The meristem produces tissues that later develop into more specialized mature structures. Which of the following correctly pairs the early tissue with the mature tissue?

The meristem produces tissues that later develop into more specialized mature structures. Which of the following correctly pairs the early tissue with...

Terminal buds are often accompanied by additional pairs of buds known as

Terminal buds are often accompanied by additional pairs of buds known as A - lateral buds B - Accessory buds C - Interbuds D - Meristem buds Answer: B...

What type of ground tissue is the most common and helps store both food and water?

What type of ground tissue is the most common and helps store both food and water? A - Sclerenchyma B - Xylem C - Collenchyma D - Parenchyma Answer: D...

Which best describes the arrangement of the xylem and phloem in a monocot plant?

Which best describes the arrangement of the xylem and phloem in a monocot plant? A - Paired bundles of xylem and phloem throughout the stem B - Phloem...

Which of the following is true of vascular tissues in plants?

Which of the following is true of vascular tissues in plants? A - Xylem is made of living cells and phloem is made of non-living cells B - Xylem...

The age of a tree can be determined by counting the number of rings. What structure are you looking at when you count these rings?

The age of a tree can be determined by counting the number of rings. What structure are you looking at when you count these rings? A - Xylem B - Cotyledon C...

When most people tap into trees to collect maple syrup, they are most likely trying to collect material from what type of tissue?

When most people tap into trees to collect maple syrup, they are most likely trying to collect material from what type of tissue? A - Xylem B - Ground C...

Plants that have cones rather than flowers for seed production are best known as

Plants that have cones rather than flowers for seed production are best known as A - Vascular B - Angiosperms C - Dicots D - Gymnosperms E - Monocots Answer: D...

Palm trees have long leaves, vascular tissue, and flowers. Based on this information, palm trees can best be classified as

Palm trees have long leaves, vascular tissue, and flowers. Based on this information, palm trees can best be classified as A - Monocot B - Non-vascular C...

Why must plants, such as mosses, live in moist environments?

Why must plants, such as mosses, live in moist environments? A - They have roots to help support the plant only in moist environments B - They lack...

Apple trees are vascular plants with flowers. Based on this information, apple trees can be classified as

Apple trees are vascular plants with flowers. Based on this information, apple trees can be classified as A - Gymnosperms B - Monocots C - Dicots D...

Plants that have two cotyledons and flowers in groups of four or five are best known as

Plants that have two cotyledons and flowers in groups of four or five are best known as A - Vascular B - Dicots C - Non-vascular D - Monocots E -...