Bio Lab

From the Central Dogma and Genetic Medicine activity: Which of the following genetic therapies was discussed when discussing Cystic Fibrosis?

small molecule drugs

In the video experiment on anthocyanin in beets, we discovered a piece of lab equipment that helps us to measure absorbance. What's the piece of equipment called?

spectrophotometer

You viewed an experiment that used iodine, starch, and dialysis tubing. We found out that certain molecules are too large to cross the cell membrane with passive transport alone. From the experiment, which molecule was too large to cross the membrane of the dialysis tubing?

starch

From the interactive video: Great Transitions Which of the following are accurate statements regarding human evolution? Select all that apply.

the fossil record contains animals with features that are intermediate between those of modern humans and quadrupedal apes the first humans evolved in Africa in the most recent phase of human evolution, there has been a greater reliance on culture

Which of the following is a correct interpretation of the wings of bats and the wings of birds?

they are homologous because they have similar internal bone structure inherited from a common ancestor

What is the purpose of gene therapy?

to deliver corrected DNA to cells that have gene mutations causing disease

What are estuaries?

transition areas between a river and the ocean

Which of the following are freshwater aquatic biomes? (Choose all that apply)

wetlands streams rivers lakes and ponds

Which suspect or suspects are most likely innocent? (Choose all that apply)

(PARTIAL CREDIT) - 3 and 4 (IT MIGHT BE) - 2, 3, and 4

Which suspect may be related to the person who committed the crime?

(WRONG) - 5 (IT MIGHT BE) - 2

When using a microscope, which objective lens do you always start with?

(WRONG) - low power (IT MIGHT BE) - scanning

In the worksheet for Some Animals Are More Equal Than Others: Trophic Cascades and Keystone Species, you are given data about Letourneau and Dyer's study from the 1990s. They studied the impact of beetles on ants that live on a tropical shrub. Which statement do Letourneau and Dyer's results support?

Adding beetles reduced ant numbers and triggered a trophic cascade that decreased the mean leaf area left on plants.

Which of the onion root cells is in prophase?

B

From the Central Dogma and Genetic Medicine activity: What is the purpose of CRISPR-Cas9?

CRISPR is used to edit the DNA of a cell, like a molecular scalpel

Characterized by hot, dry summers and mild, rainy winters. This ecosystem as a whole is adapted to recover from periodic wildfires. Animals are usually nocturnal.

Chaparral

Winters are long and cold and the summer growing season is short. Vegetation includes evergreen trees with needle-like leaves.

Coniferous Forest

Chromatin consists of _____________.

DNA and protein

Characterized by very little rainfall and large temperature fluctuations between day and night. Most of the animals are nocturnal and live underground.

Desert

Hot and rainy all year long (humid). It contains the greatest biodiversity out of all the biomes. The dense canopy forms many layers and the plants compete for light.

Tropical Forest

Alcohol and/or disinfectants should be used on all equipment before and after work.

True

Human blood can harbor infectious agents.

True

In one of the videos you watched on diffusion, the scientist put food-dye in two beakers of water, one hot and one cold. True or False: the dye diffused faster in the hot water and slower in the cold water.

True

The eight major terrestrial biomes on Earth are each distinguished by characteristic temperatures and amount of precipitation.

True

True or False: Harmful algae blooms can affect humans, if ingested.

True

When using the high power lens, you only use fine focus- not coarse.

True

Winters are long, dark, and cold, with average temperatures below 0°C for six to 10 months of the year. The temperatures are so cold that there is a layer of permanently frozen ground below the surface, called permafrost.

Tundra

Alleles are described as __________________.

alternate versions of a gene

Proteins are polymers constructed from ________ monomers.

amino acids

Which of the following techniques is used to collect fetal cells during pregnancy for genetic testing?

amniocentesis

From the interactive video: Great Transitions The conclusion that the common ancestor of modern chimps and modern humans lived around 7 million years ago is supported by which of the following lines of evidence?

analysis of modern human and modern chimpanzee protein and DNA suggests that their lineages diverged about 7 million years ago

How do scientists know that the hominid called "Ardi" is about 4.4 million years old?

by analyzing volcanic deposits below the layer containing Ardi

An individual who is homozygous __________________.

carries two copies of the same allele for a gene

Which is not a characteristic of all living organisms?

composed of multiple cells

From our Case Study on Kimberly: ____________________ is a devastating illness that affects the lungs, pancreas, and intestines-- often causing them to fill with mucus. In 1989, researchers discovered that the disease is caused by a mutation in a gene that produces a protein that channels chloride across cellular membranes. People with two copies (or alleles) of the mutated gene have a buildup of mucus in the lungs, intestines, and other organs due to nonfunctioning or absent channel proteins. Researchers have found that small-molecule drugs are able to interact directly with disease-causing proteins, blocking their negative effects.

cystic fibrosis

Where in the cell does glycolysis occur?

cytoplasm

From the interactive video: Great Transitions, Which of the following traits can be used to differentiate humans from our closest living primate relatives? Select all that apply.

extensive tool use large brain size bipedality

A specific stretch of DNA that programs the amino acid sequence of a polypeptide is a ________.

gene

Crossing over in prophase I of meiosis results in ___________.

genetic recombination

Which of these equations describes aerobic cellular respiration?

glucose + oxygen --> carbon dioxide + water + energy

The breakdown of polymers occurs by a process called ___________; in which water is added to break bonds between monomers.

hydrolysis

From the anthocyanin and beets experiment, match each variable with it's appropriate part of the experiment:

independent - temperature dependent - absorbance unit standardized - same size tubes used

Many human traits, such as our performance on intelligence tests or our susceptibility to heart disease, are ______.

influenced by both genes and the environment

Lactic acid build up in muscles is a sign that __________.

insufficient oxygen is reaching the muscles

What name is given to the specific location of a gene on a chromosome?

locus

When using the compound microscope, which objective lens should you use first to locate the specimen?

low or scanning

The above figure shows that _________________.

meiosis results in the formation of four haploid daughter cells

A symbiotic relationship where both of the co-existing species benefit from the interaction is called ________.

mutualism

Match each monomer with it's polymer!

nucleotide - nucleic acid amino acid - protein triglyceride - fats/lipids monosaccharide- carbohydrates

The chromosomes of eukaryotic cells are found in the __________.

nucleus

A process is referred to as aerobic if it requires ____________.

oxygen

The final electron acceptor of cellular respiration is ___________.

oxygen

In aquatic ecosystems, what name is given to the region where photosynthesis can occur?

photic zone

In the eutrophication experiment (with the 7 jars), what was the independent variable?

pollution source

From the Central Dogma and Genetic Medicine activity: Which of the following genetic therapies was discussed when discussing Huntington's Disease?

RNA interference

Warm year-round with dry and wet seasons. Periodic fires are common during the dry season and the vegetation includes drought-tolerant and fire-tolerant plants.

Savanna

This biome has four seasons. The temperature varies widely from season too season with cold winters and hot, wet summers. During the winter the plants go dormant and many of the animals hibernate or migrate.

Temperate Deciduous Forest

Contains a rich mix of grasses and herbaceous plants and contain some of the world's most fertile soils. The vegetation is well-adapted to drought, fire, and cold.

Temperate Grassland

When physically in the lab, I would figure out where the following safety materials are (select all that apply):

Fire extinguisher Deluge shower Eye wash station Nearest telephone to call for help in an emergency

From the short film Some Animals Are More Equal Than Others: Trophic Cascades and Keystone Species: The marine animal that preyed upon sea otters, creating a trophic cascade, was a great white shark, Carcharodon carcharias.

False

From the short film Some Animals Are More Equal Than Others: Trophic Cascades and Keystone Species: True/False: All members of a food web are equal in abundance and in their relative effects on one another.

False

It's so hot in Northridge sometimes, sandals are O.K. for lab

False

Mitosis results in 2 haploid daughter cells, normally found in human sexual reproductive organs (e.g. sperm and egg).

False

True/False: Every member of a food web is the prey of another member of the food web.

False

We learned how soap works in today's lab. True/False: the hydrophilic heads of the soap molecule face towards the grease molecules.

False

Your instructor is not in the room and the experiment says light a Bunsen burner. You may go ahead.

False