viral infections
genetic disorders
sexually transmitted diseases
bacterial infections
2. A field of biology that studies ways that DNA can be manipulated for the benefit of humans is: (1 point)
marine biology
entomology
genetic engineering
zoology
3. All of the following are found in both plant and animal cells, except: (1 point)
a cell wall
a cell membrane
mitochondria
endoplasmic reticulum
4. The process by which water passes into or out of a cell is called: (1 point)
solubility
endocytosis
osmosis
selective transport
5. Through the process of homeostasis, organisms are able to: (1 point)
pass genetic information from generation to generation
develop sensitivity to environmental stimuli
maintain constant internal conditions
incorporate nutrients into their cells
6. The process of cellular respiration: (1 point)
is performed by organisms that are incapable of photosynthesis
breaks down food molecules to release stored energyc
occurs before plants are able to carry out photosynthesis
occurs only in animal cells
7. Long chains of amino acids are found in: (1 point)
carbohydrates
proteins
lipids
nucleic acids
8. The internal transport system of the cell consists of a system of membrane channels called: (1 point)
the mitochondria
the nucleus
the chloroplast
the endoplasmic reticulum
9. Oxygen must be present in order for:
(1 point)
glycolysis to occur
ATP production to occur
fermentation to occur
the Krebs cycle to occur
10. The bonds that hold water molecules together in a droplet of water are: (1 point)
ionic bonds
polar covalent bonds
nonpolar covalent bonds
hydrogen bonds
11. The term gamete is used to describe: (1 point)
cells that are diploid
cells with numerous vacuoles
sperm or egg cells
cells with mutations in their DNA
12. The organelles that make sugar in plants are: (1 point)
chloroplasts
mitochondria
nucleus
ribosomes
13. Storing genetic information is a major function of: (1 point)
carbohydrates
lipids
fatty acids
nucleic acids
14. One major reason that pea plants were a good choice for Mendel's studies is that: (1 point)
pollination is easy to control in pea1
peas are edible and Mendel could eat his experiment afterward
peas have several different forms of a single trait
peas have only two chromosomes in their cells
15. The three major branches of science are: (1 point)
genetic engineering, marine biology, and space science
neuroscience. chemistry, and geology
physical science, earth science, and life science
paleontology, physical science, and biology
16. In nucleic acids, the base guanine always pairs with: (1 point)
adenine
uracil
thymine
cytosine
17. Which of the following is not an organic macromolecule? (1 point)
carbon dioxide
lipid
nucleic acid
carbohydrate
18. An active muscle cell requires a great deal of energy to contract. It is likely that this muscle cell has large numbers of: (1 point)
chloroplasts
mitochondria
chromosomes
vacuoles
19. When mitosis is complete, the two cells that are formed: (1 point)
contain identical copies of DNA
are haploid, unlike the starting cell
vary somewhat depending on how much crossing over has occurred
are sperm in males and eggs in females
20. The nucleus of an oxygen atom contains: (1 point)
negatively charged electrons
both protons and neutrons
only positively charged protons
only neutrons, which have no electrical charge
21. When cells break down food molecules, energy: (1 point)
is released all at once
is converted into body heat and released
is temporarily stored in ATP molecules
causes excitation of electrons in chlorophyll molecules
22. As a result of diffusion, the concentrations of many types of substances: (1 point)
always become greater inside a membrane
eventually become balanced on both sides of a membrane
always remain greater on the outside of a membrane
become imbalanced on both sides of a membrane
23. Red flowers are dominant over white flowers in Indian Paintbrush. What color would a flower with genotype Rr be? (1 point)
red
pink
white
a mixture of red and white petals
24. All organisms possess DNA that: (1 point)
creates energy for the cells
allows sensitivity to environmental stimuli
captures energy from the sun
contains information for growth and development
25. A human with the genotype XY is: (1 point)
a male
a female
26. Proteins are made in cells on organelles called the: (1 point)
ribosomes
mitochondria
nuclei
vacuoles
27. People with Down Syndrome have: (1 point)
45 chromosomes
46 chromosomes
47 chromosomes
no X chromosomes
28. The molecule that transfers amino acids to the cytoplasm for protein synthesis is: (1 point)
DNA
mRNA
rRNA
tRNA
29. In a scientific experiment, the group in which
dw24star@ymail.com
number 16 is adenine and 17 is carbon dioxide 26 is mitochondria number 1 is genetic disorders number 3 is cell wall
hurricane04343
1) Genetic disorders
2) Genetic engineering
3) Cell Wall
4) Osmosis
5) Maintain constant internal conditions
6) Breaks down food molecules to release stored energy
7) Proteins
8) Endoplasmic Reticulum
9) Krebs Cycle to occur
10) Hydrogen bonds
11) Sperm of egg cells
12) Chloroplasts
13) Nucleic acids
14) Pollination is easy to control
15) Physical science, earth science, and life science
16) Cytosine
17) Carbon dioxide
18) Mitochondria
19) Contain identical copies of DNA
20) Both protons and neutrons
21) Is temporarily stored in ATP molecules
22) Eventually become balanced on both sides of a membrane
23) Red
24) Contains information for growth and development
25) Female
26) Ribosomes
27) 47 chromosomes
28) tRNA
:D
1 genetic
2genetic engineering
4ednocytosis
7protiens 10 polar covelant bonds
13nucleic acids
14 have different forms of a single trait
15c
20b
21b
Natural
I have written detailed answers to all of the questions, but Yahoo!Answers is not letting me post them... (maybe the answer is too long!) If you email me or instant message me, I'd be happy to email you the answers!
Orignal From: some biology, please help i really suck at this class?
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