The brain is part of the nervous system The brain is part of the nervous system. Which of the following best describes the brain? A group of organ systems working systems working separately A group of tissues that belong to different systems A group of cells that work together to perform a specific job A group of tissues that work together to perform a specific job

D. A group of tissues that work together to perform a specific job

Which of these statements is true of asexual reproduction? It produces offspring genetically identical to each other and requires one parent It produces offspring genetically identical to each other and requires two parents It produces offspring genetically different to each other and requires one parent It produces offspring genetically different to each other and requires two parents

a. It produces offspring genetically identical to each other and requires one parent

How do animals get the nitrogen they need? Eating plants or other animals that eat plants Breathing nitrogen from the atmosphere Performing nitrogen fixation Drinking nitrogen in water How do animals get the nitrogen they need?

a. Eating plants or other animals that eat plants

NAME EACH OF THE FOLLOWING AQUATIC COMMUNITIES: x = less than 1% salt concentration y = high salt concentration and great diversity of species z = mix of fresh water and salt water and contains many grasses

WHICH 2 Systems of a rabbit’s body must be working together for a rabbit to run away from a fox?

Skeletal and muscular This Photo by Unknown Author is licensed under CC BY-SA-NC

Which two systems are interacting in this diagram?

Respiratory and circulatory This Photo by Unknown Author is licensed under CC BY-SA-NC

Which 3 of the human body systems work together to move and control body parts? Nervous, skeletal, and muscular Muscular, endocrine and excretory Digestive, excretory and reproductive Circulatory, endocrine and respiratory

a. nervous, skeletal and muscular This Photo by Unknown Author is licensed under CC BY-NC-ND

cytoplasm lysosome nucleus ribosome When a cell structure is worn out or defective, which organelle is responsible for breaking down the material? cytoplasm lysosome nucleus ribosome

lysosome This Photo by Unknown Author is licensed under CC BY-SA-NC

Cell Membrane A. cell membrane B. cell wall C. cytoskeleton D. nucleus Which of the following is instrumental in helping a cell maintain homeostasis? A. cell membrane B. cell wall C. cytoskeleton D. nucleus Cell Membrane

A. a rigid structure A. a rigid structure B. selectively permeable Unlike the cell membrane, which characteristic describes the cell wall? A. a rigid structure B. selectively permeable C. found in all organisms D. composed of lipid bilayer A. a rigid structure

Which of these best describes movement of molecules during diffusion? From an area of equilibrium to an area of high concentration From an area of high concentration to an area of low concentration From an area of low concentration to an area of high concentration All of the above Which of these best describes movement of molecules during diffusion?

diffusion Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. This Photo by Unknown Author is licensed under CC BY-SA

What cell process is occurring in the diagram and what is the energy being used? Energy being used = light Process = photosynthesis

What is the relationship between chloroplasts and mitochondria Chloroplasts use light energy to make glucose and mitochondria use glucose to make ATP energy Chloroplasts use glucose to make energy and mitochondria use ATP to make glucose Chloroplasts and mitochondria transform solar energy into chemical energy for the cell Chloroplasts and mitochondria transform glucose into sugar in their structures

Chloroplasts use light energy to make glucose and mitochondria use glucose to make ATP energy

The nucleus is filled with cytoplasm The cytoplasm controls the nucleus The nucleus is surrounded by the cytoplasm The mucleus and the cytoplasm work together to produce energy Which of the following statements describes the relationship between cytoplasm and nucleus?

The nucleus is surrounded by the cytoplasm This Photo by Unknown Author is licensed under CC BY-SA This Photo by Unknown Author is licensed under CC BY-NC-ND

Some animal cells such as muscle cells require a great amount of energy. Which cel organelles would you expect to be in large numbers in muscles? chloroplasts lysosomes mitochondria nuclei

Mitochondria: the powerhouse of the cell This Photo by Unknown Author is licensed under CC BY-SA

If a parent who is homozygous dominant for a trait mates with a parent who is homozygous recessive for a trait, what is the probability that their offspring will exhibit the dominant phenotype? 25% 50% 75% 100%

R Rr r Rr 100% This Photo by Unknown Author is licensed under CC BY-SA

Many traits have a recessive allele and a dominant allele Many traits have a recessive allele and a dominant allele. If “R” represents a dominant allele for red and “r” represents a recessive allele for brown color what would the genotype be for a brown organism to be? bb BB rr Rr

rr This Photo by Unknown Author is licensed under CC BY-SA-NC This Photo by Unknown Author is licensed under CC BY-NC-ND

Bacteria Reproduce by asexual reproduction, but protists reproduce by sexual reproduction. Which of the following indicates an advantage that protisits have over bacteria? Protist offspring have identical DNA to their parents, so genetic variation cannot happen. Bacteria offspring have identical DNA to their parents, so genetic variation cannot happen. Bacteria offspring have different DNA than either of their parents, so genetic variation does not happen Protists and bacteria offspring have identical DNA to their parents, so genetic variation cannot happen in either kingdom

Bacteria offspring have identical DNA to their parents, so genetic variation cannot happen.

Which of these situations is an example of selective breeding? A mutation in the genes of a racehorse makes it faster than either of its parents A dog breeder wants dogs with curly fur, so she mates a curly female with a curly male Over time, giraffes with long necks become more numerous than giraffes with shorter necks Rabbits with thick fur are more likely to survive a cold winter and produce offspring with thick fur

A dog breeder wants dogs with curly fur, so she mates a curly female with a curly male This Photo by Unknown Author is licensed under CC BY-NC-ND

Either Liz or her husband has the dominant gene for blond hair Your friend Liz has dark brown hair. As an adult, liz marries a man with black hair, and together they have a child with blond hair. Which of the following statements best explains the childs hair color? Dark hair and black hair genes combine in a new way to create light colored hair Either Liz or her husband has the dominant gene for blond hair Either Liz or her husband has the recessive gene for blond hair Both Liz and her husband have recessive genes for blond hair