問題一覧
1
Glucoma is an eye disease that can cause blindness if not properly treated. Daily eyedrop’s are one of the treatments commonly used. One group of scientist thinks that wearing special contact lenses to provide delivery of the medicine over long period of time is a treat treatment option. What step should the researchers do next?
Test one group of people using the eyedrop‘s and test another group using the contact lenses.
2
The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called?
A hydrogen bond
3
Which statement describes ALL living things?
They are composed of one or more cells
4
The most important evidence supporting the opinion that viruses are not alive is that they?
Do not have a cellular structure
5
A study by a group of scientists measure the number of seafood species lost since 1950. The data from the study is shown in the graph below based on the data, The scientist concluded that all seafood species populations will collapse by the year 2050. Other scientists have questioned this claim. What evidence from the study best defends the initial scientists conclusion?
The data shows a general decrease in seafood populations after 1950
6
Which of the following is false?
Carbon has the capacity to form polar covalent bonds with hydrogen
7
Most biological Macro molecules contains carbon, hydrogen, and oxygen atoms. Which of these has the carbon hydrogen and oxygen in 1:2:1 ratio?
Carbohydrates
8
In humans, excess blood glucose is stored in the liver and in muscle tissue in the form of glycogen. Glycogen is a long chain of glucose molecules bonded together. Because of this, glycogen is called a ____________
Polysaccharide
9
Which of the following is not a function of polysaccharides?
Storage of genetic information
10
Which of the following statements is false?
Starch is a lipid
11
Which of the following molecules make up the basic structure of a cell membrane?
Phospholipids
12
The “tails” of the molecules in the cell membranes orient away from water. Which of the following describes the tales movement away from water?
Hydrophobic
13
Viruses lack all of these characteristics of living things EXCEPT
Organization
14
A week attraction between two water molecules is called?
Hydrogen bond
15
The health group “lose it” wanted to investigate the hypothesis that ketogenic diet was superior for weight loss. 200 individuals were split into two equal groups: One group followed the low-fat diet while the other group followed the very low-carbohydrate diet. Protein levels, duration of experiment and amount of exercise were not significantly different between the groups. The results of the study are shown below. Which of the following served as constants in the study?
Amount of protein in the diet and amount of exercise
16
Which list of components characterizes RNA?
A phosphate group, ribose, and uracil
17
Which of the macromolecules below could form structural parts of the cell, be enzymes, or be involved in cell movement or communication?
Proteins
18
An organic compound that is composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio is known as a?
Carbohydrate
19
Amino acids are a structural component of which macromolecule?
Proteins
20
Which function of prokaryotic and eukaryotic cells is accomplished differently in the two cell types?
Storage of hereditary information
21
Which diagram shows a eukaryotic cell?
b
22
This cell is most likely from a
Bacteria
23
Which best describes the category and specific cell type below?
eukaryotic; euglena
24
Which of the following is NOT found in ALL cells
Mitochondria