5 Many female mammals, such as dogs, give birth to litters consisting of multiple offspring. All of the characteristics described below are reproductive adaptations that female dogs have for giving birth and caring for several offspring at once, except

As blood glucose levels increase, hormones are released to return glucose levels to normal. What is this is an example of?

BRCA genes are human genes that normally work to help shut down cancer cells before they can harm the body. Scientists have learned that individuals inheriting a damaged form of a BRCA gene are at greater risk of developing breast or ovarian cancer. This discovery is an important first step in.......

In humans, embryonic development during the first two months is more sensitive to environmental factors than during the remaining months. What is the best explanation for this statement?

Gene editing can be used to swap out an unwanted gene for a desirable one from the same species. Which statement best explains why the desired gene will be found in all cells that come from the genetically edited cell?

Which sequence of events best represents ecological succession?

A hummingbird may need to consume up to 50% of its body weight in sugar each day, just to meet its energy needs. Some of this energy is stored and some is used for metabolic activities, but much of the energy is

Which human activity has the potential to greatly affect the equilibrium of an ecosystem?

What is an Ecosystem?

Which statement describes a failure of homeostasis in humans?

Ringworm is a skin infection common among school-aged children. Although the name suggests that a worm causes the disease, it is actually caused by a fungus that lives and feeds on the dead outer layer of the skin. The relationship between ringworm and humans can be described as ...

Some environmental engineering companies have recently designed “manufactured wetlands” to serve as natural sewage treatment plants. Utilizing the ability of wetland organisms to reduce human wastes makes use of naturally occurring

Enzymes secreted by cells in the leaves of the Venus flytrap can digest

What are two pieces of evidence that support the Big Bang Theory?

Which star type has a surface temperature of 4000 K and a luminosity 1000 times greater than the Sun?

When handling cat litter, humans can potentially be exposed to a harmful single-celled protozoan. Its primary host is the common domestic cat, but it can also live in humans. This protozoan is an example of a

A certain species of plant serves as the only food for the young larvae of a particular species of butterfly. In a large field, a disease kills all the members of this plant species. As a result of the plant disease, the butterfly population will most likely

When handling cat litter, humans can potentially be exposed to a harmful single-celled protozoan. Its primary host is the common domestic cat, but it can also live in humans. This protozoan is an example of a

Certain seaweeds contain a greater concentration of iodine inside their cells than there is in the seawater surrounding them. The energy required to maintain this concentration difference is most closely associated with the action of

Doctors sometimes use a vaccine to prepare the body to defend itself against future infections. These vaccines most often contain

Building large manufacturing facilities can affect ecosystems by increasing the

An ameba is a single-celled organism. It uses its cell membrane to obtain food from its environment, digests the food with the help of organelles called lysosomes, and uses other organelles to process the digested food. From this, we can best infer that

White blood cells are most closely associated with which two body systems?

Carnivorous plants, such as pitcher plants and sundews, live in bogs where many other organisms cannot. Due to the high rate of decomposition occurring in bogs, the environment is acidic and contains very little oxygen and nutrients. The bogs only support certain types of organisms because

Anhidrosis is the inability to sweat normally. If the human body cannot sweat properly, it cannot cool itself, which is potentially harmful.

Anhidrosis most directly interferes with:

The hair colors of the members of a family are listed below.

mother – brown hair

father – blond hair

older son – brown hair

younger son – blond hair

The hair colors of the sons are most likely a direct result of

A sample of DNA from a human skin cell contains 32% cytosine (C) bases. Approximately what percentage of the bases in this sample will be thymine (T)?

Carmine, a compound that comes from the cochineal beetle, shown above, is used as a food coloring.The food coloring is not harmful to most people, but in a small number of individuals, it causes a reaction and affects their ability to breathe. This response to carmine is known as

As a way to reduce the number of cases of malaria, a human tropical disease, a specific DNA sequence is inserted into the reproductive cells of Anopheles mosquitoes. Which process was most likely used to alter these mosquitoes? cloning studies

Some salmon have been genetically modified to grow bigger and mature faster than wild salmon. They are kept in fish-farming facilities. Which statement regarding genetically modified salmon is correct?

Which group of organisms in an ecosystem fills the niche of recycling organic matter back to the environment?

The use of solar panels has increased in the last ten years. A benefit of using solar energy would include

In a sewage treatment facility, an optimal environment is maintained for the survival of naturally occurring species of microorganisms. These organisms can then break the sewage down into relatively harmless wastewater. For these microorganisms, the wastewater facility serves as

The governments of many countries have regulations that are designed to prevent the accidental introduction of nonnative insects into their countries. This is because, in these new habitats, the nonnative insects might

The process of transferring energy during respiration occurs in a series of steps. This prevents too much heat from being released at one time. Maintaining an appropriate temperature is beneficial to an organism because

Fruits and vegetables exposed to air begin to brown because of a chemical reaction in their cells. This may result in these foods being thrown out. Some people have found that adding lemon juice (citric acid) to apple slices keeps them from turning brown. The prevention of browning is likely the result of

Scientists monitoring frog populations have noticed that the ratio of male frogs to female frogs varies when certain chemicals are present in the environment. The influence of estrogen, for example, has a noticeable effect. In the presence of a higher amount of estrogen, it would be most likely that

Which action could humans take to slow the rate of global warming?

The role of antibodies in the human body is to

Since the early 1990s, proton pump inhibitors (PPIs) have been widely used to treat acid reflux disease. Although clinical tests in the 1980s deemed PPIs to be safe for humans, in 2012 the FDA announced warnings that long-term use of PPIs could increase the risk of bone fractures, kidney disease, and some intestinal infections.

Which statement best explains why the safety of PPIs is now in question when clinical experiments in the 1980s provided evidence that they were safe?

The process of embryonic development is represented in the diagram.

The arrows in the diagram each represent a process known as

Rejection of a newly transplanted organ is caused by

As blood glucose levels increase, hormones are released to return glucose levels to normal. This is an example of

Which statement describes a failure of homeostasis in humans?

Which biological process is represented in the diagram below?

The diagram below shows specialized plant cells that control openings called stomates. The proper function of these cells is vital to the survival of the plant because they regulate the

Substance X directly supplies energy for various life functions, as shown in the diagram below. Which substance is represented by X in the diagram?

The structural formulas shown below represent parts of two different complex carbohydrate molecules composed of glucose subunits. Molecules 1 and 2 differ in their overall structure. Due to the differences in structure, each of these molecules most likely

To capture their prey, spiders have fangs, which pierce the body wall of insects and inject venom. Spider venoms usually contain specific proteins that attack the cell membranes of the prey. The membranes and most of the contents of the insect’s body turn into a liquid that the spider then ingests for food. These specific venom proteins are most likely

Lymphatic capillaries are found throughout the body. Both the lymphatic and circulatory systems transport substances between the bloodstream and body tissues. These two systems are also involved in fighting infections. The arrows shown in the diagram that go from the blood capillaries to the interstitial fluid most likely represent the

Doctors often use certain medications to treat infections. A few people have a reaction to some of these medications, such as itching, swelling, or trouble breathing. This is an example of

A small lizard spends the morning hours lying in the sunlight until its body temperature rises. Later on in the day, the lizard rests in a shady area until its body temperature cools. This type of behavior is important to

The Venus flytrap is a plant that has a unique system by which it traps and breaks down its prey. Unsuspecting insects land on the leaf and touch tiny hairs located on the leaf, triggering the leaf to close around the prey. The substance responsible for breaking down the Venus flytrap’s prey most likely contains

It may be harmful when people compete to see who can hold their breath the longest under water. Without oxygen, brain cells

Students did an experiment comparing the activity of four different enzymes, A, B, C, and D. The results are represented in the graph below. A valid conclusion based on the information in the graph is that

The diagram below represents changes that take place within the human body. The diagram represents

Sailors in the past may have heard the greeting from a passing ship, “Avast ye scurvy dogs.” This greeting would be a reference to a disease known as scurvy, which is due to inadequate intake of vitamin C. Which row in the chart below correctly identifies the cause of this disease and a possible treatment for it?

In the 1660s, Flemish physician Jan van Helmont grew a small willow tree in a pot of soil. He added only water to the pot. At the end of five years, he found that the tree had gained 75 kilograms, but there was very little change in the mass of the soil. Van Helmont concluded that the plant gained weight directly from the water. We now know that this conclusion is only partially correct because, in addition to water, photosynthesis also requires

Doctors sometimes use a vaccine to prepare the body to defend itself against future infections. These vaccines most often contain

Anhidrosis is the inability to sweat normally. If the human body cannot sweat properly, it cannot cool itself, which is potentially harmful. Anhidrosis most directly interferes with

Carmine, a compound that comes from the cochineal beetle, shown below, is used as a food coloring. The food coloring is not harmful to most people, but in a small number of individuals, it causes a reaction and affects their ability to breathe. This response to carmine is known as

Which organelle is correctly paired with its function?

What substance would you predict was added to the cells to cause the change shown?

What is number 1 and what does it do?

Which structure is present in plant, but not animal cells?

The diagram below represents a biochemical process. Which molecule is represented by X?

Which cell structure is mainly responsible for releasing energy from food molecules in some single-celled organisms?

The chart lists substances involved in the process of cell respiration. Which describes how they interact in cell respiration?

Certain seaweeds contain a greater concentration of iodine inside their cells than there is in the seawater surrounding them. The energy required to maintain this concentration difference is most closely associated with the action of

Doctors sometimes use a vaccine to prepare the body to defend itself against future infections. These vaccines most often contain

An ameba is a single-celled organism. It uses its cell membrane to obtain food from its environment, digests the food with the help of organelles called lysosomes, and uses other organelles to process the digested food. From this, we can best infer that

White blood cells are most closely associated with which two body systems?

Anhidrosis is the inability to sweat normally. If the human body cannot sweat properly, it cannot cool itself, which is potentially harmful.

Anhidrosis most directly interferes with:

Carmine, a compound that comes from the cochineal beetle, shown above, is used as a food coloring.The food coloring is not harmful to most people, but in a small number of individuals, it causes a reaction and affects their ability to breathe. This response to carmine is known as

As a way to reduce the number of cases of malaria, a human tropical disease, a specific DNA sequence is inserted into the reproductive cells of Anopheles mosquitoes. Which process was most likely used to alter these mosquitoes? cloning studies

The process of transferring energy during respiration occurs in a series of steps. This prevents too much heat from being released at one time. Maintaining an appropriate temperature is beneficial to an organism because

Fruits and vegetables exposed to air begin to brown because of a chemical reaction in their cells. This may result in these foods being thrown out. Some people have found that adding lemon juice (citric acid) to apple slices keeps them from turning brown. The prevention of browning is likely the result of

What occurs in the organelle that looks like this?

What is the substance the enzyme works on called?

What part of a plant cell allows them to make their own food?

What molecule has the instructions (blueprint) for the cell?

Name the building block of a starch

If a segment of DNA is ATCGA what would its complement be?

What organism is an ecosystem that would be most affected by a decrease in CO2?

If an DNA sequence reads AGGCTA then the mRNA sequence would read

What process requires energy?

creating large, complex molecules by combining smaller molecules is referred to as ____

Organic compounds such as starch are too ___ to fit though the cell membrane. They must be digested into ___ before they can be absorbed

the different forms of a gene.

What term is used to describe the living components of an ecosystem?

What occurs in the organelle that looks like this?

What form is energy made in?

What direction does a microscope turn the object you are viewing?

What is the substance the enzyme works on called?

Name the most important inorganic compound to living things…

How should the control group be treated differently than the experimental group?

If a 20% salt solution is put into dialysis tubing & added to a beaker of distilled water - what way will the water move?

What term defines a cell without a nucleus?

A cell maintains life by undergoing ….

What part of a plant cell allows them to make their own food?

What molecule has the instructions (blueprint) for the cell?

Name the building block of a starch

If a segment of DNA is ATCGA what would its complement be?

What organism is an ecosystem that would be most affected by a decrease in CO2?