How do vestigial structures support evolution?

What is the difference between homologous and analogous structures?

How do analogous structures support evolution?

How do homologous structures support evolution?

Which organism produces offspring with the most diverse characteristics using the method of reproduction shown in the chart? A. The frog, because sexual reproduction results in offspring with traits from both parents. B. The honeybee, because offspring from unfertilized eggs ...

Cell theory can be broken down into three main parts. State each of the three parts of cell theory and give a real-world example of each.

Cell theory consists of three parts. Since all of these parts are __________ by extensive evidence and describe a phenomenon in nature, they are considered to be a scientific theory. The first part of the theory describes how all __________ ...

What percentage of blood flow can be blocked before individuals begin experiencing symptoms of CAD? A) 15% B) 25% C) 50% D) 70%

Which of the following is an example of the most basic unit of life? organisms animals atoms cells

Which of the following is a real-world example of “all cells come from pre-existing cells?” A scientist looks at algae under a microscope and observes that it is made of cells. A water molecule forms when two hydrogen atoms combine ...

What would happen to the biodiversity of the ecosystem if the mouse population decreased due to disease?

Which of the following pieces of evidence support the first part of cell theory? A sunflower is found to be made of plant cells. A cat is found to be made of animal cells. Bacteria are found to consist of ...

What is the main idea of this story? A. A snake scares people. B. A hawk finds a deadly snake. C. A hunter makes a bad choice. D. A town has almost no water.

An Audible clicking/popping noise can be heard when operating the recirculation controls and no noticeable difference in air quality is observed. Which of these would be the most likely the cause? A. Non-functioning actuator B. Bad mode door C. Debris ...

You type the keywords “sustainable logging” into a search engine. Which of the following search results would you expect to provide the most accurate information about sustainable logging practices? A. Mankovsky Lumber – Green, Sustainable, Honest! “Here at Mankovsky Lumber, we ...

Usually, the question can contain long text before it. You should give it also. FISH REPTILE MAMMAL BIRD

How do the bubble-shaped sacs of the alveoli assist in gas exchange? A. They control the flow of blood. B. They maximize the exchange surface. C. They sense when air is in the lungs. D. They expand and contract to ...

Drag the correct amino acid abbreviations from the toolbox into the empty ovals to show the amino acid sequence that will be translated from this section of mRNA, beginning with the underlined base. Some ovals may not be filled. Phe Leu

How does the microorganism cycle matter? Complete the researcher’s diagram with two inputs and two outputs. ATP Lipids Oxygen Glucose Nitrogen Proteins Carbon dioxide

Compare the membrane permeability for K+ and Na in most In most cells the membrane at rest is much more permeable to K+ than to Na+, so the membrane potential is much closer to EK than E Na.

What would a membrane resting potential be if a membrane were equally permeable to K+ and Na+, and not permeable to any other ions? then the resting potential would be halfway between EK and ENa. For example, if EK = ...

If a membrane is permeable to 2 ions, what will determine the resting potential of the membrane? Its value will be determined by the relative permeability of the membrane to these two ions.

Explain what happens when the K+ soltn are added to the different environments over the course of time The ion to which the membrane is permeable will diffuse across the membrane down its concentration gradient until the resulting voltage caused ...

Imagine another cell with a more typical K+ concentration gradient: [K+]o = 4.5 mM and [K+]i = 140 mM. The Nernst equation calculates EK = -92 mV. Given the previous info, what is this cell’s membrane potential if it is ...

If compartment A represents the inside of a cell and compartment B the extracellular fluid, then with [K]i = 100 mM and [K]o = 10 mM as in the example above calculate the equilibrium potential for potassium.

What happens when we establish a concentration gradient for K+ by adding 100 mM KCl to compartment A, and 10 mM KCl + 90 mM NaCl to compartment B?

What is the cause of a membrane potential?

What is resting membrane potential, or resting potential?

What is membrane potential V?

What is membrane potential V?

the process by which a ribosome, using genetic information coded in messenger RNA, constructs proteins from amino acids. translation transcription

Heredity is when parents pass down traits to their offspring through reproduction. The genetic traits, coded in DNA, that are inherited are called the ________. The ________ is the observable or physical characteristics that a person inherits. These can be ...

If messenger RNA was unable to leave the nucleus and travel through the cytoplasm, which of the following would be a direct result? Transcription occurring on ribosomes would be interrupted. Mitosis would not occur because the RNA could not be ...

The 3-base code for amino acids is __________. The complete process in which amino acids are assembled to make proteins is __________. This process occurs in __________ steps, __________. Translation occurs on the __________. __________ makes up ribosomes and attaches ...

Select the statement(s) which are true of the genetic code. On DNA, adenine pairs with thymine while cytosine pairs with guanine. On RNA, adenine pairs with thymine while cytosine pairs with guanine. On DNA, adenine pairs with uracil while cytosine ...

Select the statement(s) that are true about dihybrid crosses and the Punnett square pictured. A dihybrid cross involved two sets of alleles for two sets of traits. The F1 generation is heterozygous for both traits. The F1 generation is homozygous ...

Photosynthesis is used to produce food for plants in the form of glucose. In the process, oxygen is released. As shown in the diagram, plants require water and carbon dioxide (from the air). What else is required for photosynthesis and ...

Beyond helping plants produce better crops, nitrogen-fixing microbes might also A) improve the taste of vegetables through higher amounts of nitrogen. B) allow trees and plants to suck up and break down industrial contaminants. C) create new varieties of plants that can grow ...

The role of the cell membrane is most like the job of which person? a firefighter who evacuates people from a burning building a police officer who allows select people to enter and leave a crime scene a bus driver ...

How does water contribute to the process of photosynthesis? A. It absorbs sunlight B. It provides nutrients C. It carries minerals D. It helps create food

Why is sunlight important for photosynthesis?

Metabolism generally __________ to the weather. A. forfeits B. contributes C. corresponds D. surrenders

Based on the DNA studies explained in the selection, scientists connected Polynesians not to South America but to which two places? A) Italy B) Taiwan C) mainland China D) New Zealand E) England

Which of the following statements is accurate about mitosis? Mitosis consists of two phases. Mitosis produces gametes. Mitosis results in two genetically identical daughter cells. Mitosis is associated with sexual reproduction.

Alien parent 1 is heterozygous (Aa) with 4 arms. Alien parent 2 is homozygous recessive (aa) with 2 arms. Select the statement(s) which are accurate based on Mendel’s laws and the information provided. The dominant trait is 2 arms. 50% of offspring will ...

Based on the laws of segregation, which of the following genotypes could be produced by the crossing of a Tt plant with a Tt plant? TT and tt TT and Tt Tt TT, Tt, and tt

Determine the genotype of parent 2 based on Mendel’s laws and the Punnett square provided. Not enough information provided homozgyous recessive (ff) heterozygous (Ff) homozygous dominant (FF)

Alien parent 1 is heterozygous (Aa) with 4 arms. Alien parent 2 is homozygous recessive (aa) with 2 arms. Select the statement(s) which are accurate based on Mendel’s laws and the information provided. 4 arms is the dominant trait. 50% of offspring ...

Which of the following of Mendel’s laws of genetics is represented in the image? both law of independent assortment neither law of segregation

Which of the following is one way that meiosis is different from mitosis? Meiosis occurs in all cells, mitosis occurs only in the sex cells. Meiosis produces 46 chromosomes, and mitosis produces 23 chromosomes. In meiosis, there is variation ...